powertest protection modules. directional……. 40 a) set group settings………… ... powertest...

PowerTest Protection Modules

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PONOVO POWER CO., LTD No. 139 Jinghai Third Road, BDA, Beijing, China, 100176 Office TEL. +86 (10) 59089666 E-Mail [email protected] Website www.relaytest.com

PowerTest

Protection Modules

VERSION: PowerTest Protection-AE-2.30 DATE : 16/01/2017 This manual is the publisher of PONOVO POWER CO., LTD. To make any kind of copy of this manual please contact PONOVO POWER CO., LTD in advance. This manual represents the technical status for the moment of publishing. The product information, description and specifications mentioned in the manual do not have any contact binding force and PONOVO POWER CO., LTD remains the right to make modifications to the technical specifications and configurations without prior notice. PONOVO POWER does not take responsibility to the possible error/mistakes in this manual.


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1. Distance(Z-phi)……………….. 4

a) Input characteristic……….. 5 Input RIO file…………. 5 Input characteristic

from database……….. 6 Input characteristic

from start page………. 7 b) Set group settings………… 7 c) Set group parameters……. 7 d) Configure binary inputs….. 9 e) Set assessment criterion… 10 f) Add test point…………….. 11 g) Set test parameters……… 15 h) Report setting……………. 16 i) Z-T diagram……………… 16 j) Test report example……. 17

2. Distance(R-X)………………. 19 3. Differential………………….. 20

a) Wiring for the test………. 21 b) Set group settings……… 21 c) Set group parameters…. 22 d) Set assessment criterion.. 23 e) Configure binary inputs…. 23 f) Add test point……………. 24 g) Set test parameters…….. 25 h) Test report example……. 27

4. Time Inversed Current ……. 29 a) Input characteristic…………. 30 b) Set group settings…………….. 31 c) Set group parameters………… 31 d) Set assessment criterion…….. 31 e) Add test point…………………. 31 f) Set test parameters………….. 33 g) Test report example…………. 34

5. Time Inversed Voltage ……. 36 a) Input characteristic…………. 37 b) Set group settings…………….. 37 c) Set group parameters………… 37 d) Set assessment criterion…….. 37 e) Add test point…………………. 38 f) Set test parameters………….. 39

6. Directional……. 40 a) Set group settings…………….. 40 b) Set group parameters………… 40

7. Frequency relay………….. 41 a) Set group settings……………. 42 b) Set group parameters……….. 42 c) Set assessment criterion……. 43 d) Add test point………………… 43 e) Edit the added point………… 43

8. Voltage relay……………… 47 a) Set group settings……………. 48 b) Set group parameters……….. 48 c) Set assessment criterion……. 49 d) Add test point…………………. 49 e) Edit the added point…………. 49 f) Set test parameters…………. 49

9. U,I,T Relay(AC)……………………. 53 a) V-pickup(AC)…………………. 53

Set group settings………. 53 Set group parameters….. 53 Set test parameters……. 54

b) I-pickup(AC)………………….. 54 Set group settings………. 54 Set group parameters….. 54 Set test parameters……. 54

c) Time relay(V, AC)……………. 55 Set group settings……… 55 Set group parameters…. 55 Set test parameters…… 55

d) Time relay(AC)……………. 56 Set group settings…….. 56 Set group parameters… 56 Set test parameters……. 56

10. U,I,T Relay(DC)………………….. 57 a) DC relay(V)………………… 57

Set group settings…….. 57 Set group parameters…. 57 Set test parameters…… 58

b) DC relay(I)…………………… 58 Set group setting…………. 58 Set group parameters…… 58

Contents


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Set test parameters……… 59 c) DC time relay………………….. 60

Set group parameters…… 60 Set test parameters……… 60

11. Auto-reclosing…………………… 61 a) Set group settings…………… 62 b) Set group parameters………. 62 c) Configure binary inputs…….. 63 d) Set assessment criterion…… 64 e) Set test points……………….. 64 f) Set test parameters…………. 65 g) Test report example………… 66


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This module is used to test impedance relay with Z-Phi setting in different ways, including Input impedance characteristic to Z plain Associate the characteristic with relay settings Select test points directly on Z plain or in setting box Zone verification Z-T test Edit new characteristic Typical layout of this module is shown bellow

1．Distance (Z-Phi)


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PONOVO POWER CO., LTD 6

Input characteristic We can use different way to load impedance characteristic on the Z plain. Input RIO file Step 1: enter into Characteristic page Then the following window pops up Step 2: click Import RIO Then we will be asked to select the folder where RIO files are saved. Under the installation directory we can see Test Objects_RIO

Step 3: select Test Objects_RIO Enter into Test Objects_RIO we can see folders with different manufactures names Step 4: select RIO Select the manufacture and double click the mouse button to enter into that folder. Select the RIO file we need and confirm the operation. Example: If we select ABB LZ95.rio file then we can get the characteristic for this relay displayed on Z plain


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Input characteristic from database PowerTest provides the database where some customer can select some relay characteristics Step 1: open the database Move mouse pointer to Z plain and right click mouse button. Select Import Characteristic Step 2: select relay Drop-down the selection box we can see the relay list. Select the one we need and confirm the operation

Example: If we select SEL-321 then we can get the characteristic displayed on Z plain


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Input characteristic from start page Click Line on the start page we can see some dedicated distance relay modules. If we open one module from them we can also load the characteristic for that relay on the Z plain. Example: If we select 7SA6 then we can get the characteristic displayed on Z plain

Set group settings Click button to enter into group setting page Group setting page is shown bellow Here we can set the values based on actual relay settings under test. LN Zone 1: zone 1 setting for L-N fault LL Zone 5: zone 5 setting for L-L fault LN T3: tripping time for zone 3 Phi: line impedance angle Set group parameters Click button to enter into group parameter page. Group test parameter page along with default settings is shown bellow


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TPrefault Prefault time setting. During this time the test set will supply normal system balance voltage. Trigger Mode There are four trigger modes can be selected here. Time Manual Bin. Input GPS Time: Fault status comes immediately after

prefault time is over Manual: Fault status comes after we press Bin. Input: Fault status comes immediately

after binary input H senses the trigger signal

GPS: Fault status comes immediately after

GPS pulse signal is received. ---------------------------------------------- Note: GPS controlled test is available with optional PGPS-2 GPS Synchronization Device. Please contact the manufacture for more information ---------------------------------------------- PT at Select it according to the actual PT installation position Busbar side Line side CT polarity Select it according to the actual CT polarity

Busbar: polarity is toward busbar side Line: polarity is toward line side CB Sim. When optional Circuit Breaker Simulator is used we can need to select Yes here. Open Time Related to CB Sim. Close Time Related to CB Sim. ---------------------------------------------- Note: Please contact the manufacture for more information about the optional Circuit Breaker Simulator and its application ---------------------------------------------- Test Mode We can select the follow test modes. IConst: Constant current VConst: Constant voltage ZsConst: Constant system impedance KE Mode There are three types of KE mode available and we need to select the one according to the relay under test. ∣K0∣, Phi(K0) RERL, XEXL ∣Z0∣, Phi(Z0) ∣KE∣or RE(KE) Setting for ∣K0∣, RERL or ∣Z0∣ Phi(KE) or Im(KE) Setting for Phi(K0), XEXL or Phi(Z0)


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∣Zs∣, Phis, Ks Magnitude, Ks Angle When Constant system impedance is selected then we need to give settings here. Configure binary inputs Click button to enter into binary input configuration page To simplify the wiring operation and reduce the preparation time before the test we have assigned each binary input here to a dedicated purpose.

Bin. In1 TripA TripABC

Bin. In2 TripB Bin. In3 TripABC Bin. In4 Reclose


Bin. In6 TripB TripABC

Bin. In7 TripC TripABC

Bin. In8 Reclose

Trip Sel 1234 5678

Select to use binary 1234 or 5678

TripA, TripB or TripC If we select them then test set will sense the binary inputs for TripA, TripB and TripC separately and record their tripping time in the result.

Example: tripping time record with selection of TripA, TripB and TripC In this example we can see the tripping time difference for phase A, B and C TripABC If we select them then test set will sense the binary inputs for TripA, TripB and TripC separately and record the latest tripping time as the tripping time for all three phase tripping Example: tripping time record with selection of TripABC In this example the tripping time is same for phase A, B and C


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Set assessment criterion Click Assessment to enter into criterion setting page

Example 1: If phase tripping time is smaller than 0.2s the test result will be regarded as Passed Example 2: If phase A tripping time meets the criterion of smaller than 0.2s and larger than 0.1s at the same time (AND logic) then the test result will be regarded as Passed

Example 3: If phase A does not have tripping then it will be regarded as Passed ---------------------------------------------- Note: The value of 0 (or 0.001) represents No Tripping ---------------------------------------------- Example 4: If phase does not trip or if tripping time is larger than 5s (OR logic) then the test result will regarded as Passed. Above mentioned logic will happen when we test the relay with back up protection. If we set a very long fault time the back up protection may be activated. With this criterion we can still get the test result marked as Passed

Trip A Criterion for phase A tripping Trip B Criterion for phase B tripping Trip C Criterion for phase C tripping Rec Criterion for reclosing Sec. trip Criterion for tripping after reclosing


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Add test point One default test point will be added to the test list when we open the module. We have different ways to add test points On Z plain Move mouse pointer to Z plain area and right click the mouse button, select Add Test Point Direct Add


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In the parameter page click Add to add a new test point Quick Add Then we can see the following display window Here we can select the test point by giving the percentage of the relay setting. Example: Here we have selected two points: 0.95: 95% of the relay setting 1.05: 105% of the relay setting


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---------------------------------------------- Note: The other settings and selections here are related to the test parameters. See Set test parameters bellow ---------------------------------------------- Editing the added point When we add a new test point we follow the procedure of first add then edit. Example: There is one existing test point before we add a new one After we add one new point we can see it in the test list At this moment the setting of the newly added point is same as the first one Then we need to edit the setting for the newly added test point


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Editing test point on Z plain Move mouse pointer to the position where we want to set and double click the mouse button to confirm this operation

After this operation the corresponding test point in test list will be assigned to the value associated to that point on Z plain


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Set test parameters Editing from parameter page For each test point we can set its test parameters on the parameter setting area

Fault type Here we select the fault we want to simulate

∣Z∣ Here we set the Z setting Phi Here we set the angle of Z

R Here we can view the calculated R value

X Here we can view the calculated X value

Current If we have selected Constant current mode we need to set constant current here

Voltage If we have selected Constant voltage mode we need to set constant current here

Direction Forward: fault occurs in the

forward direction Reversed: fault occurs in

the reversed direction

Fault mode

Transient: circuit breaker will be reclosed to a health system

Permanent: circuit breaker will be reclosed to a faulty system and one more tripping is expected

Fault time

This time includes three parts 1. time for the first fault 2. time for reclosing 3. time for the second fault

time after reclosing Editing through Quick Add

In the Quick Add page we can add the new test points and we can also edit the parameters for test points to be added. In the above example we have selected to check the Zone 1 and Z2 settings 95% of Zone 1 setting28 105% of Zone 1 setting 95% of Zone 2 setting 05% of Zone 2 setting For each test point A-E, A-B and A-B-C

faults will be simulated. So totally 12 test points will be added at one time In the test list we will see the newly added test points.


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Report setting For this module we provide the facility to edit the results to be included in the test report Click Report Setting to enter into the setting page Available items include Fault: faulty type Zone: zone information Z%: test point in percentage of Z setting ∣Z∣ Z value of test point Angle: angel of the test point TripA: phase A tripping time TripB: phase B tripping time TripC: phase C tripping time Recl: reclosing time Assessment: assessment result R: R value of test point X: X value of test point I: test current V: test voltage Dir. direction of fault simulation Trip(2) Tripping time for the second fault Rec.1 reclosing time for phase A Rec.2 reclosing time for phase B Rec.3 reclosing time for phase C ---------------------------------------------- Note: We can select maximum 10 items to be displayed in the test report ----------------------------------------------

Z-T diagram The Z-T diagram gives a clear picture of the relationship between impedance zone and tripping time. The principle Z-T diagram can be got based on relay settings (impedance setting and time setting) in group setting page. The Z-T diagram can be got after test is completed From the above example we can see that the tripping occurs in zone 4 with a tripping time of 2.003s



Test Report example

RCS-901 Test Report

Test Object Substation:PONOVO Bay:LIB

Device:RCS-901 Type:Line Manufacture:NARI SN:00000001

Tested by:Wei Date:04/08/2008 13:27

Distance LN Zone1=2.000Ohm LL Zone1=2.000Ohm KE Mode:|K0|,Phi(K0) LN Zone2=3.000Ohm LL Zone2=3.000Ohm |KE| or Re(KE)=0.440 LN Zone3=8.000Ohm LL Zone3=8.000Ohm Phi(KE) or Im(KE)=0.000 LN Zone4=7.000Ohm LL Zone4=9.000Ohm LN Zone5=8.000Ohm LL Zone5=8.000Ohm

Mode:Z-PhiTPrefault=15.000S Trigger Mode:Time PT at:Busbar CT Side:Line CB Sim.:No OpenTime=200mS CloseTime=100mS Mode:Z-Phi

NR Fault |Z|

（ohm） Angle

（deg） Itest （A）

TripA （S）

TripB （S）

TripC （S）

Reclosing （S）

Assessment

1 A-E 1.900 78.0 1.000 0.038 0.038 0.038 NA Passed 2 A-E 2.100 78.0 1.000 NA NA NA NA Passed 3 A-E 2.850 78.0 1.000 0.330 0.330 0.330 NA Passed 4 A-E 3.150 78.0 1.000 NA NA NA NA Passed


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This module is used to test impedance relay with R-X setting. The settings for this module is same as Distance(Z,Phi). Only difference is that we need to set R-X setting instead of Z-Phi setting. In the group setting page we can set R-X settings

In the test parameter setting area R-X setting box will be activated

2．Distance (R-X)


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This module is used to test differential relays with 6 current. The main test functions include Check pick-up value Check gradient for different slops Check instant tripping current Check 2nd harmonic restraint Check 5th harmonic restraint Check trip time

3．Differential



Wiring for the test In this module 6 currents will be used to injected into the different relay. A wiring diagram is provided to easy the wiring operation. Switch the view button to the wiring diagram

Set group settings Click button to enter into group setting page Group setting page is shown bellow Ih/Iref(HV): matching factor for HV side Im/Iref(MV): matching factor for MV side Il/Iref(LV): matching factor for LV side Id>>: nominal rapid tripping current Id>: nominal pick up current Limp Number: number of slops Limp1: knee point 1 nominal current Limp2: knee point 2 nominal current Slop 1: slop 1 gradient Slop 2: slop 2 gradient I2f/Idiff: 2nd harmonic restraint I5f/Idff: 5th harmonic restraint The Ir/Id curve will be generated automatically and displayed on the Ir/Id display page based on the setting information


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Set group test parameters Click button to enter into group parameter page. Group test parameter page along with default settings is shown bellow TPrefault Prefault time setting Tfault Fault time setting CB Sim. When optional Circuit Breaker Simulator is used we can need to select Yes here. Open Time Related to CB Sim. Close Time Related to CB Sim. ---------------------------------------------- Note: Please contact the manufacture for more information about the optional Circuit Breaker Simulator and its application ---------------------------------------------- Wiring Factor in Tap Select No if wiring factor has already

been considered in matching factor Select Yes if wiring factor is not consider

in matching factor Tested Winding Select windings to be tested. Side 1-Side 3: test HV-LV winding Side 1-Side 2: test HV-MV winding Side 2-Side 3: test MV-LV winding Side 1 Vector group for winding 1 Side 2 Vector group for winding 2 Side 3 Vector group for winding 3 Conversion Here we define from where we normalize the current to the reference side. This setting available from relay instruction manual Phase shifting This refers to vector group number with winding 1 as the reference side. Example: For Y-D-11 connection we need to select 11 here AsisDef This setting will only influence the scale of display name: display in nominal value pu: display in pu value Inom This is the nominal current setting Search Mode Here we define the search mode for getting Id tripping point under each Ir setting. There are two methods available Dichotomic Linear


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CT starpoint Here we define the direction of CT Normally we can determine the direction by looking at the bias equation in relay instruction manual Example: Equation Id=IA+IB indicates that CT direction is toward the protective device. Thus we need to select tow.prot.obj Example: Equation Id=IA-IB indicates that CT direction is toward the transmission line. Thus we need to select tow.line Bias. Equ. Here we select the equation which defines Ir/Id characteristic. This equation is available from relay instruction manual. Available bias equations include Ir=(|I1-I2|)/K1 or Ir=(|I1+I2|)/K1 Ir=(|I1|+|I2|*K2)/K1 Ir=max(|I1|,|I2|) Ir=(|Id-|I1|-|I2||)/K1 Ir=|I2| K1, K2 They are bias quantities in the bias equation and can be found in relay instruction manual Test Phase Here we can define to test only one phase or to test three phases at the same time. A, B, C: only one phase will be tested ABC: 6 currents will be injected into the

relay under test. And the tripping time for all three phase will be got

Resolution This setting is related to Search Mode selection.

For dichotomic mode this resolution setting will be used to assess the current tripping point. If the difference between the output value of the current tripping point and the value of the last un-tripping point is less than this setting then the current tripping point will be determined. For linear mode this resolution indicates the minimum step can be set. ---------------------------------------------- Note: We can set a bigger resolution to reduce the test time. But this may bring bigger error in the test result. ---------------------------------------------- Set assessment criterion Click Assessment to enter into criterion setting page Configure binary inputs Click button to enter into binary input configuration page


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Example: OR logic In this example any tripping from A, B, or C will terminate the test process. Example: AND logic In this example when tripping for A, B, or C all comes then test process will be terminated and the tripping time for all three phased will be recorded. Add test point When we open the module a group of default test items/points will appear in the test list. On Ir/Id curve plain Move mouse pointer to Ir/Id curve display area and right click the mouse button, select Add Test Point

Direct Add In the parameter page click Add to add a new test point Quick Add Then we can see the following display window If we confirm the above setting we can add 5 more test points in the test list. See bellow.


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Editing the added point When we add a new test point we follow the procedure of first add then edit. Example: Move cursor the test item where we want to add one more test point. After we add one new point we can see it in the test list At this time the newly added test point has the same name and parameters as the last one We can edit the name for this newly added point. Editing test point on Ir/Id plain Move mouse pointer to the position where we want to set and double click the mouse button to confirm this operation

One default test item/point list will be added to the test list when we open the module. Set test parameters Editing from parameter page For each test point we can set its test parameters on the parameter setting area


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Name Here we modify the name for the current test item/point

Test Phase This is the selected winding we set in group parameter. A means only phase A will be tested

IR Here we see the Ir setting for the current test point. We can edit this setting according to our test requirement

Type

Here we define the way to test the current test point Verify curve

Test process will check the Id tripping value based on the current Ir setting.

Slope 1 To do this test we need to set two points on slop 1. And the test process will check the Id tripping values according to Ir settings of these two slop 1 points. At the same time the gradient for slop 1 will also be calculated.

Slope 2 To do this test we need to set two points on slop 2. And the test process will check the Id tripping values according to Ir settings of these two slop 2 points. At the same time the gradient for slop 2 will also be calculated.

Id> Check the pick up value

Id>> Check the rapid tripping value

Resolution Display the resolution setting from group parameter page


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Test Report example

CST 31AE Test Report

Test Object Substation: Beijing Substation Bay:Lib

Device:CST 31AE Type:Differential Realy Manufacture:sifang(Hathaway) SN:8757888

Tested by:Wei Date:05/05/2008 20:21

1.Differential Tprefault=0.200S Tfault=0.100S

CB Simu.:No Topen=100ms Tclose=100ms Wiring Factor:not include in Tap

Wind:H-L Trans. Connect:Y/D-11 CT Connect:Y/Y Reference Wind:D

Axis:name Inom=5.000A Search Mode:Mode1 CT starpoint:tow. Prot. Obj

Bias. Equ.:IR=(|I1|+|I2|*K2)/K1 K1=2 K2=1 Test Phase:A

NR Ibias Idiff Id>> Slop1 Slop2 Id 1 1.000A 0.935A 0.935A 2 2.100A 1.055A 0.512 3 2.700A 1.362A 0.512 4 3.464A 1.735A 0.509 5 3.928A 1.971A 0.509 6 8.022A 3.785A 3.785A


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2.Diff Harmonic Restraint Tprefault=0.200S Tfault=0.100S

CB Simu.:No Topen=100ms Tclose=100ms Wiring Factor:not include in Tap

Wind:H-L Trans. Connect:Y/D-11 CT Connect:Y/Y Reference Wind:D

Axis:name Inom=5.000A Search Mode:Mode1 CT starpoint:tow. Prot. Obj

Bias. Equ.:IR=(|I1|+|I2|*K2)/K1 K1=2 K2=1 Test Phase:A

NR Harmonic Setting Act Assess 1 2 0.150 0.148 Passed

3.Trip Time test

Tprefault=0.200S Tfault=0.100S CB Simu.:No Topen=100ms

Tclose=100ms Wiring Factor:not include in Tap Wind:H-L Trans. Connect:Y/D-11

CT Connect:Y/Y Reference Wind:D Axis:name Inom=5.000A

Search Mode:Mode1 CT starpoint:tow. Prot. Obj Bias. Equ.:IR=(|I1|+|I2|*K2)/K1 K1=2

K2=1 Test Phase:A

NR Idiff Ibias TripTime 1 1.500A 1.000A 0.038s 2 2.000A 2.000A 0.042s


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This module is used to test time inversed current. The main test functions include Test normal current relay with or without time delay Test directional current relay with or without time delay Test time inversed current relay Test the inversed current relay with user defined curve The relay mentioned above can be directional The relay mentioned above can be time definite and with time delay

4．Time inversed current



Input characteristic In case we want to test time inversed current relay with our own defined curve we need first import and define the tripping characteristic from our library. Click Characteristic Definition to enter into characteristic definition page. Click Import to open the library We can use different way to load impedance characteristic on the Z plain. We can select the characteristic according to the relay under test.

Example: select IEC Normal Inversed After we confirm the selection the default characteristic will be display


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Set group settings Click button to enter into group setting page Group setting page is shown bellow In: Indicates the rated current of the relay

under test. Set group parameters Click button to enter into group

parameter page. Group test parameter page along with default settings is shown bellow

TPrefault Prefault time setting. During this time the test set will supply normal system balance voltage. Fault Here we can select the fault to be simulated for the test. A-E: A-E fault B-E: B-E fault, C-E: C-E fault A-B: A-B fault B-C: B-C fault C-A: C-A fault A-B-C: A-B-C fault 3I0: use 3I0 as the quantity to change I2: use I2 as the quantity to change Ia+Ib+Ic: set 3 currents sources in parallel UaIa: use only Va and Ia

CT polarity Select it according to the actual CT polarity Busbar: polarity is toward busbar side Line: polarity is toward line side Set assessment criterion In Characteristic Definition we can set the criterion for assessment Add test point When we open the module one default test point is already in the test list. We can use different ways to add the test points. On characteristic display page Move mouse pointer to characteristic display area and right click the mouse button, select Add Test Point


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Direct Add In the parameter page click Add to add a new test point Quick Add Then we can see the following display window Here current setting is expressed as the times of the rated current we set in group setting page.

Example: Suppose we have the following settings. After we confirm this setting we can see new test points are added in the test list. On the characteristic curve we can also see the test points


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Editing the added point When we add a new test point we follow the procedure of first add then edit. Example: Move cursor the test item where we want to add one more test point. After we add one new point we can see it in the test list Editing test point on characteristic plain Move mouse pointer to the position where we want to set and double click the mouse button to confirm this operation.

Set test parameters Editing from parameter page For each test point we can set its test parameters on the parameter setting area Prefault setting Voltage Prefault valtage Current Prefault current (load current)

Angle Angle between voltage and current

Fault setting Voltage Fault valtage

Current Current for the current test point expressed in times of rated current


Other setting Max fault time Maximum fault duration

Fault type Display the fault type we have selected in group parameter page


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Test Report example

DGT-801A Test Report

Test Object Substation: 500kV Bay:Testing Laboratory Device:DGT-801A Type:Transformer

Manufacture:NARI SN:1234567 Tested by: Lee Date:05/08/2008 09:56

TimeInversedCurrent

Tprefault=50.000Sec Tfault=10.000Sec Fault:A-E CT Dir.:Line

NR Current TripTime 1 2.000In 10.239S 2 3.000In 3.668S 3 4.000In 1.946S 4 5.000In 1.222S 5 6.000In 0.845S 6 7.000In 0.619S 7 9.000In 0.382S 8 10.000In 0.134S 9 11.000In 0.130S

10 12.000In 0.127S 11 13.000In 0.127S 12 14.000In 0.126S


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This module is used to test time inversed current. The main test functions include Test time inversed Voltage relay The relay mentioned above can be directional The relay mentioned above can be time definite and with time delay

5．Time inversed voltage



Input characteristic In case we want to test time inversed voltage relay with our own defined curve we need first import and define the tripping characteristic from our library. Click Characteristic Definition to enter into characteristic definition page.

Select Under Voltage and Over Voltage Set group settings Click button to enter into group setting page Group setting page is shown bellow

Set fixed value of K, A, B, C, D, p, E, Vp according to the relay information. Vp: Rated voltage (Lead)

Set group parameters Click button to enter into group


TPrefault Prefault time setting. During this time the test set will supply normal system balance voltage. Fault Here we can select the fault to be simulated for the test. A-E: A-E fault B-E: B-E fault, C-E: C-E fault A-B: A-B fault B-C: B-C fault C-A: C-A fault A-B-C: A-B-C fault 3I0: use 3I0 as the quantity to change I2: use I2 as the quantity to change CT polarity Select it according to the actual CT polarity Busbar: polarity is toward busbar side Line: polarity is toward line side Set assessment criterion In Characteristic Definition we can set the criterion for assessment


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Add test point When we open the module one default test point is already in the test list.

We can use different ways to add the test points. On characteristic display page Move mouse pointer to characteristic display area and right click the mouse button, select Add Test Point Direct Add In the parameter page click Add to add a new test point Quick Add

Then we can see the following display window

Here current setting is expressed as the times of the rated current we set in group setting page. Editing the added point When we add a new test point we follow the procedure of first add then edit.


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Set test parameters Editing from parameter page For each test point we can set its test parameters on the parameter setting area

Prefault setting V(L-N) Prefault valtage Current Prefault current (load current)


Fault setting Voltage Fault valtage

Current Current for the current test point expressed in times of rated current


Other setting Max fault time Maximum fault duration


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This module is used to test maximum trip angle and two boundary angles (Lead and lag angles) Set group settings Click button to enter into group setting page Group setting page is shown bellow

MTA Max trip angle Leadangle Boundary angle 1 (Lead angle) Lagangle Boundary angle 2 (Lag angle) Set group parameters Click button to enter into group parameter page. Group test parameter page along with default settings is shown bellow

Tprefault： prepare time. During this time,

Vn and Iprefault are output. The phase angle is phiprefault for once.，

Tprefault： prepare time. During this time, Vn and Iprefault are output. The phase angle is phiprefault.

Iprefault： The output current before fault and within preparation time

Pphiprefault：The phasae angle between the output current before fault and within preparation time and voltage

Angle Define：The reference of phase

Set test parameters

Pre-Fault parameters Phase The recorded current and

voltage phase during test including phase A voltage and current, phase B voltage and current, phase C voltage and negative sequence and zero sequence voltage and current.

Fault type Set fault type according to

different phase. Voltage can be set according to the test

requirement Current should be set large enough to

make relay trip Frequency The phase angle of output

current and voltage (Can’t be changed. The fixed value is the system voltage Fn.)

From the start variable phase To the end variable phase Step Size the phase step size Tmax Should be set larger than tripping time setting

6．Directional



This module is used to test Frequency relay The main test functions include Test pick up value Test trip time Check df/dt seting Check voltage blocking value Check current blocking value

7．Frequency relay



Set group settings Click button to enter into group setting page Group setting page is shown bellow Trip freq: Here we set the tripping

value of frequency we will get from tripping test

Trip time: Tripping time setting df/dt blocking: df/dt blocking setting Blocking voltage: blocking voltage setting Blocking current: blocking current setting Blocking voltage: blocking voltage type

Vpp: L-L voltage Vpc: L-N voltage

Set group parameters Click button to enter into group


Input Logic Here we define the logic combination of the selected binary inputs

F Change Mode Here we define the way for frequency to change during the test. Continuous In this mode the frequency will change according to the df/dt setting with the minimum dt step. Sudden In this mode the frequency will change according to the df/dt setting and also the setting of dt (see bellow) dt For a given df/dt setting we can define the step of dt. At the minimum setting of dt the frequency will change almost linearly. This setting will become active when sudden is selected in F Change Mode.


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Set assessment criterion Click Assessment we can enter into criterion setting page Add test point When we open the module a group of default test items/points will appear in the test list. Click Add to add a new test point Edit the added point When we add a new test point we follow the procedure of first add then edit. Example: Move cursor the test item where we want to add one more test point.

After we add one new point we can see it in the test list Set test parameters Tripping test The test item of tripping has the following parameter settings

df/dt This setting should be smaller than the actual relay df/dt setting in order to make relay trip

Fre. Start

When test starts the frequency will decrease from nominal system frequency and when it reaches the value set here it will return to the nominal value

Fre. Stop Test will terminate when frequency reaches this value

Fre. Step

Each time when frequency starts again to decrease this step frequency will be added to the end frequency of last cycle of frequency change

Hold time Step duration which should be larger than the actual relay tripping time setting


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Principle of the test process: The following diagram indicates this test process

t1: prefault time t2: hold time F1: Fre. Start F2: Fre. Stop Fs: Fre. Step

Tripping time test The test item of tripping time test has the following parameter settings

df/dt This setting should be smaller than the actual relay df/dt setting in order to make relay trip

Fre. Stop This value should be smaller than the Trip freq. setting in group setting page


Principle of the test process: Frequency will start to decrease from the

Trip freq. value Since df/dt we set here is smaller than

relay df/dt setting relay the relay tripping is allowed

When frequency reaches the under-frequency tripping value the internal timer in the relay will be activated

Since the hold time is longer than the actual relay tripping time we can get the relay tripping time after delay time is over

This tripping time will then be recorded in the test result

df/dt test The test item has the following parameter settings


df/dt start From where the df/dt will change by step

df/dt stop Test will terminate when df/dt reaches this value

df/dt step For each cycle of test the df/dt will decrease with this step setting



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Principle of the test process: Frequency will start to decrease from the

nominal frequency with the df/dt value set by df/dt start. Normally the df/dt start is larger than the actual df/dt setting so the relay will not trip for this first cycle of test.

When frequency reaches the end frequency defined by Fre. Stop the frequency will return to nominal frequency and a new cycle of test will start.

In the new test cycle the frequency will decrease with a new df/dt value which is one step (df/dt step) smaller than the df/dt used in last test cycle

Test will be terminated in the cycle where relay trips and the df/dt value used in this cycle will be recorded in the test result

current blocking test Some frequency relay may have the current blocking function integrated in it. For such relay we can also test its current blocking value. The test item has the following parameter settings

df/dt

This value should be smaller than the Trip freq. setting in group setting page so the df/dt blocking function will be disabled


I Start

From where the current starts to decrease. This star current should be smaller than the current blocking setting to enable the blocking

I Stop Test will terminate when current reaches this value

I Step Step for current to increase in the new test cycle


Phase We can select the current source here depending on the requirement of relay


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voltage blocking test Some frequency relay may have the voltage blocking function integrated in it. For such relay we can also test its voltage blocking value. The test item has the following parameter settings

df/dt

This value should be smaller than the Trip freq. setting in group setting page so the df/dt blocking function will be disabled


V Start

From where the voltage starts to decrease. This star voltage should be smaller than the voltage blocking setting to enable the blocking

V Stop Test will terminate when voltage reaches this value

V Step Step for voltage to increase in the new test cycle


Phase We can select the voltage source here depending on the requirement of relay


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This module is used to test Voltage relay The main test functions include Test pick up value Test trip time Check dv/dt seting

8．Voltage relay



Set group settings Click button to enter into group setting page Group setting page is shown bellow Under-voltage blocking under-voltage setting Trip time Tripping time setting dv/dt blocking dv/dt blocking setting Sel blocking voltage select the voltage source to be applied on the relay Current Current to be injected into the relay Set group parameters Click button to enter into group


Input Logic Here we define the logic combination of the selected binary inputs

V Change Mode Here we define the way for voltage to change during the test. Continuous In this mode the voltage will change according to the dv/dt setting with the minimum dt step. Sudden In this mode the voltage will change according to the dv/dt setting and also the setting of dt (see bellow) dt For a given dv/dt setting we can define the step of dt. At the minimum setting of dt the voltage will change almost linearly. This setting will become active when sudden is selected in V Change Mode.


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Set assessment criterion Click Assessment we can enter into criterion setting page Add test point When we open the module a group of default test items/points will appear in the test list. Click Add to add a new test point Edit the added point When we add a new test point we follow the procedure of first add then edit. Example: Move cursor the test item where we want to add one more test point.

After we add one new point we can see it in the test list Set test parameters Voltage test This test item has the following parameter settings

df/dt This setting should be smaller than the actual relay df/dt setting

V. Stop from

When test starts the frequency will decrease from nominal system frequency and when it reaches the value set here it will return to the nominal value

V. Stop to Test will terminate when frequency reaches this value

V. Step

Each time when frequency starts again to decrease this step frequency will be added to the end frequency of last cycle of frequency change


Variable Principle of the test process: The following diagram indicates this test process


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t1: prefault time t2: hold time Vstart: nominal system voltage V1: V. Stop from V2: V. Stop to Vs: V. Step

Tripping time test The test item of tripping time test has the following parameter settings

dv/dt This setting should be smaller than the actual relay dv/dt setting in order to make relay trip

V. Stop This value should be smaller than the voltage blocking setting in group setting page


Principle of the test process: Nominal voltage will be applied for the

time defined by prefault time setting to

reset the relay After prefault time is over the voltage will

drop to V.Stop value (smaller than the voltage setting) defined here with the speed of dv/dt (smaller than dv/dt blocking setting) for a time defined by Hold time (longer than the trip time setting)

The trip time will then be recorded in the test result

dv/dt test The test item has the following parameter settings

V. Stop This value should be smaller than the voltage blocking setting

dv/dt start From where the dv/dt will change by step

dv/dt stop Test will terminate when dv/dt reaches this value

dv/dt step For each cycle of test the dv/dt will decrease with this step


Principle of the test process: Voltage will start to decrease from the

nominal frequency with the dv/dt defined by dv/dt start. Normally the df/dt start is larger than the actual df/dt setting so the relay will not trip for this first cycle of test.

When voltage reaches the end voltage defined by V. Stop the voltage will return


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to nominal voltage and a new test cycle will start.

In the new test cycle the voltage will decrease with a new dv/dt value which is one step (dv/dt step) smaller than the dv/dt used in last test cycle

Test will be terminated in the cycle where relay trips and the dv/dt value for this cycle will be recorded in the test result


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Test Report example

PSL 612C Test Report

Test Object Substation:Ponovo Bay:Testing Laboratory

Device:PSL 612C Type:Line Manufacture:NARI SN:P0408389

Tested by: Lee Date:05/07/2008 11:27

1.V Act NR Setting Act Assessment 1 40.000V 39.600V Passed

2.dv/dt Time

NR Setting Act Assessment 1 1.000s 1.058s Passed

3.dv/dt Act

NR Setting Act Assessment 1 10.000V/s 9.800V/s Passed


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This module can be used to test AC type auxiliary/intermediate relay and AC type time relay Three sub-modules are available V Pick-up (AC) test AC voltage

type auxiliary relay I Pick-up (AC) test AC current

type auxiliary relay Time Relay (V AC) test AC voltage

type time relay Time Relay (I AC) test AC current

type time relay

V Pick-up (AC) This module is used to test pick-up and drop-off of AC voltage type auxiliary relay. Set group settings Click button to enter into group setting page Group setting page is shown bellow Vset rated voltage setting Tset trip time setting Set group parameters Click button to enter into group parameter page. Group test parameter page along with default settings is shown bellow Tprepare： prepare time used for relay to

reset; no voltage or current is generated during this time

Tprefault： prault time. This time will

appear before each test cycle; no voltage or current is generated during this time

9．U,I,T Relay (AC)


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Set test parameters Fault type or Variable Indicates the variables/output signals to be applied to the relay for the test. We have fixed to use Vab for the test. Quantity Indicates the quantities to change during the test. From From where the voltage will start to change To Test will terminate at this voltage value Step Step for voltage to change Tmax Step time and it should be larger than tripping time setting Type select the test mode Pick-up Pickup+drop-off

I Pick-up (AC) This module is used to test pick-up and drop-off of AC current type auxiliary relay. Set group settings Click button to enter into group setting page Group setting page is shown bellow Iset rated current setting Tset trip time setting Set group parameters Click button to enter into group parameter page. Group test parameter page along with default settings is shown bellow Tprepare： prepare time used for relay to




Set test parameters Fault type or Variable


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Indicates the variables/output signals to be applied to the relay for the test. We have fixed to use Va and Ia for the test Quantity Indicates the quantities to change during the test. From From where the current will start to change To Test will terminate at this current value Step Step for current to change Tmax Step time and it should be larger than tripping time setting Type Select the test mode Pick-up Pickup+drop-off

Time relay (V AC) This module is used to test trip time of AC voltage type time relay. Set group settings Click button to enter into group setting page Group setting page is shown bellow Vset rated voltage setting Tset trip time setting Set group parameters

Click button to enter into group parameter page. Group test parameter page along with default settings is shown bellow Tprefault： prault time. During this time no

voltage or current is generated Set test parameters Pre-Fault parameters Voltage can be set according the test

requirement Current can be set according to the test

requirement Angle can be set according to the test

requirement Fault parameters Voltage should be set large enough to

make relay trip Current can be set according to the test


requirement Max. fault time Should be set larger than tripping time setting


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Time relay (I AC) This module is used to test trip time of AC current type time relay. Set group settings Click button to enter into group setting page Group setting page is shown bellow Iset rated current setting Tset trip time setting Set group parameters Click button to enter into group parameter page. Group test parameter page along with default settings is shown bellow Tprefault： prault time. During this time no

voltage or current is generated

Set test parameters Pre-Fault parameters Voltage can be set according the test

requirement Current can be set according to the test


requirement Fault parameters Voltage can be set according to the test

requirement Current should be set large enough to

make relay trip Angle can be set according to the test

requirement Max. fault time Should be set larger than tripping time setting



This module can be used to test DC relays. Three sub-modules are available DC Relay (V): test DC voltage relay DC Relay (I): test DC current relay DC Time Relay: test DC type timer

DC Relay(V) This module is used to test DC type voltage relay. Auxiliary DC source Vdc is used for this test. Ia is used to generate DC current for some relays which requires DC current during the test. Set group settings Click button to enter into group setting page Group setting page is shown bellow Iset： the current to be injected to the relay

if required. Vset： voltage setting Time： trip time setting Set group parameters Click button to enter into group

parameter page. Group test parameter page along with default settings is shown bellow Tprepare： prepare time used for relay to




Example 1: no prefault time is set The test process is the linear ramp. See bellow Example 2: prefault time is set

10．U, I, T Relay (DC)


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The test process becomes pulse ramp. See bellow Set test parameters Ia if current is required for testing the relay

we need to set the current value here From From where the voltage will start to

change To Test will terminate at this voltage

value Step Step for voltage to change Tmax Step time and it should be larger than

tripping time setting Type select the test mode

Pick-up Pickup+drop-off

DC Relay(I) This module is used to test DC type current relay. Current source Ia is used for this test. Vdc is used to generate DC current for some relays which requires DC voltage during the test. Set group setting Click button to enter into group setting page Group setting page is shown bellow Iset current setting Vset the voltage to be applied to the relay

if required. Time trip time setting Set group parameters Click button to enter into group parameter page. Group test parameter page along with default settings is shown bellow Tprepare： prepare time used for relay to




Example 1: no prefault time is set


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The test process is the linear ramp. See bellow Example 2: prefault time is set The test process becomes pulse ramp. See bellow

Set test parameters Vdc if voltage is required for testing the

relay we need to set the voltage value here

From From where the current will start to

change To Test will terminate at this current

value Step Step for current to change Tmax Step time and it should be larger than

tripping time setting Type select the test mode

Pick-up Pickup+drop-off


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DC Time Relay This module is used to test DC type time relay. Set group parameters Click button to enter into group parameter page. Group test parameter page along with default settings is shown bellow

Ref. State Here we define the binary input trigger condition for the current test state. No 1: we compare the current binary input

status with the one of the first test state. The trigger will happen if they have different status.

priev: we compare the current binary input

status with the one of the last test state. The trigger will happen if they have different status.

Set test parameters The setting of test parameters are similar to State Sequence(4V,3I). Please refer to it.


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This module is used to test auto-recloser along with line protection Following tests can be done. Check the process of successful auto-reclosing Check the process of unsuccessful auto-reclosing Test the auto-reclosing time Test the voltage-block of auto-recloser Test the angle-block of auto-recloser

11．Auto-reclosing


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Set group settings Click button to enter into group setting page

Angle: fault angle |Z|: fault value Trecloser: dead time Ref. Phase: Reference Phase Vset: voltage block setting Syn. Angle: angle block setting KE Mode: compensation factor KE Mode There are three types of KE mode available and we need to select the one according to the relay under test. ∣K0∣, Phi(K0) RERL, XEXL ∣Z0∣, Phi(Z0) ∣KE∣or RE(KE) Setting for ∣K0∣, RERL or ∣Z0∣ Phi(KE) or Im(KE) Setting for Phi(K0), XEXL or Phi(Z0) Set group parameters Click button to enter into group parameter page. Group test parameter page along with default settings is shown bellow

Tprefault: Prefault time setting. During this time the test set will supply normal system balance voltage. Trigger Mode There are four trigger modes can be selected here. Time Manual Bin. Input GPS Time: Fault status comes immediately after

prefault time is over Manual: Fault status comes after we press Bin. Input: Fault status comes immediately

after binary input H senses the trigger signal

GPS: Fault status comes immediately after

GPS pulse signal is received.

------------------------------------------ Note: GPS controlled test is available with optional PGPS-2 GPS Synchronization Device. Please contact the manufacture for more information ------------------------------------------ PT at Select it according to the actual PT installation position


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Busbar side Line side CT polarity Select it according to the actual CT polarity Busbar: polarity is toward busbar side Line: polarity is toward line side CB Sim. When optional Circuit Breaker Simulator is used we can need to select Yes here. Open Time Related to CB Sim. Close Time Related to CB Sim. ------------------------------------------------------ Note: Please contact the manufacture for more information about the optional Circuit Breaker Simulator and its application ------------------------------------------------------

Configure binary inputs Click button to enter into binary input configuration page To simplify the wiring operation and reduce the preparation time before the test we have assigned each binary input here to a dedicated purpose.


Bin. In2 TripB Bin. In3 TripABC Bin. In4 Reclose


Bin. In6 TripB TripABC

Bin. In7 TripC TripABC

Bin. In8 Reclose

Trip Sel 1234 5678

Select to use binary 1234 or 5678

TripA, TripB or TripC If we select them then test set will sense the binary inputs for TripA, TripB and TripC separately and record their tripping time in the result. Example: tripping time record with selection of TripA, TripB and TripC In this example we can see the tripping time difference for phase A, B and C TripABC If we select them then test set will sense the binary inputs for TripA, TripB and TripC separately and record the latest tripping time as the tripping time for all three phase tripping Example: tripping time record with selection of TripABC In this example the tripping time is same for phase A, B and C


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Set assessment criterion Click Assessment to enter into criterion setting page Example 1:

If phase tripping time is smal

ler than 0.2s the test result will be regarded as Passed Example 2: If phase A tripping time meets the criterion of smaller than 0.2s and larger than 0.1s at the same time (AND logic) then the test result will be regarded as Passed Example 3: If phase A does not have tripping then it will be regarded as Passed ---------------------------------------------- Note: The value of 0 (or 0.001) represents No Tripping ---------------------------------------------- Example 4:

If phase does not trip or if tripping time is larger than 5s (OR logic) then the test result will regarded as Passed. Above mentioned logic will happen when we test the relay with back up protection. If we set a very long fault time the back up protection may be activated. With this criterion we can still get the test result marked as Passed Set test points In the following example we have defined 5 test points in the test list 0.95*Vsvnset Set the voltage as 0.95 times of voltage-block setting. So the voltage-block function will be disabled. And the auto-reclosing process can be tested. 1.05*Vsvnset Set the voltage as 1.05 times of voltage-block setting. So the voltage-block function will be enabled. And the auto-reclosing process will not happen. 0.95*Phisvnset Set the angle as 0.95 times of angle-block setting. So the angle-block function will be disabled. And the auto-reclosing process can be tested. 1.05*Phisvnset Set the angle as 0.95 times of angle-block setting. So the angle-block function will be disabled. And the auto-reclosing process will not happen. Acc. Trip Here we check the tripping after reclosing on fault

Trip A Criterion for phase A tripping Trip B Criterion for phase B tripping Trip C Criterion for phase C tripping Rec Criterion for reclosing Sec. trip

Criterion for tripping after reclosing


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Set test parameters The test parameter page is shown bellow ITest Current during fault condition Fault mode Can select to simulate transient fault or permanent fault.

Transient: Successful auto-reclosing

process is expected Permanent: Unsuccessful auto-reclosing process

is expected Max. fault time Maximum fault time, including the first fault time, dead time and the second fault time if applicable. V(bus side) Bus side voltage Phi(bus side) Bus side angle


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Test Report example

PSL 612C Auto Recloser Test

Test Object

Substation:Ponovo Bay:Testing Laboratory Device:PSL 612C Type:Line

Manufacture:China SN:P0408389 Tested by:XXX Date:05/07/2008 10:50

1.Auto Recloser Test

Angle=78.0Deg Syn. Angle=30.0Deg | Z |=0.500Ohm KE Mode:KR,KX Trecloser=1.000S |KE| or Re(KE)=0.680

Ref. Phase:Ua Phi(KE) or Im(KE)=0.670 Vset=15.000V

Tprefault=15.000S Trigger Con.:Time

PT at:Busbar CT Side:Line CB Simu.:No Topen=200mS

Tclose=100mS

NR FaultType Vsyn Phisyn Recl. Assessment 1 A-B 14.250V 180.0deg 3.040s Passed 2 A-B 15.750V 180.0deg - Passed 3 A-B 57.735V 20.0deg 3.041s Passed 4 A-B 63.500V 35.0deg - Passed 5 A-E 0.000V 0.0deg 3.039s Passed

powertest protection modules. directional……. 40 a) set group settings………… ... powertest...

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