Front sheetSIEMENSPTD-HA/3000467425/ED2.121.001.W-0Document no.- Rev - 2RELAY SETTING CALCULATION220 KV NAGARAM LINE- 1 DISTANCE PROTECTION RELAYNEW 400/220KV SUBSTATION AT WARANGALTRANSMISSION SYSTEM ASSOCIATED WITH GRID STRENGTHENING FOR TAMILNADU & ANDRA PRADESHLOA REF: C-55807-S119A-7/LOA-1/2020 DATED 31.03.2006POWERGRID CORPORATION OF INDIA LIMITEDNameDepartmentTelephonePlaceDateSignatureAuthor:Approval:LAXMINARAYANPTD-HA0124-2846155GURGAON-RevDateRevised itemsPage noRemarksName of reviserName of Approver104.10.08FOR APPROVALKNRRL219.12.08SETTING REVISEDALLKNRRLTotal pages25Siemens Ltd., PTD DivisionCopying this document, and giving it to others and the use or communication of the contents thereof, are forbiddenwithout express authority. Offenders are liable to the payment of damages. All rights are reserved in the event ofthe grant of patent or registration of a utility model or design

220KV NAGARAM -1400/220 KV WARANGAL SUBSTATION220KV NAGARAM LINE- 1 (BAY 209)SIEMENS DISTANCE PROTECTION RELAY SETTING CALCULATION1.0Relay Data:1.01ANSI No.=211.02Description=Distance + Over Voltage Prot.1.03Make=SIEMENS1.04Model No.=7SA5222.0Input Data:2.01System voltage=220KV2.02Source substation=400/220KV WARANGAL2.03Conductor used=ACSR TWIN MOOSE2.04Protected Line length=12.56Km2.05Positive & Negative Sequence Line Impedance /KM(R1=R2)=0.079/KM(X1=X2)=0.403/KM2.06Zero Sequence Line impedance per KMR0=0.255/KMX0=1.51/KM2.07Longest Line length - Ramakundam from NAGARAM SS=79.6Km2.08Conductor used=ACSR ZEBRA2.09Positive & Negative Sequence Line Impedance /KM(R1=R2)=0.07487/KM(X1=X2)=0.39925/KM2.10Zero Sequence Line impedance per KMR0=0.21998/KMX0=1.33923/KM2.11Shortest Line length - PURKURTHY from NAGARAM SS=8.778Km2.12Conductor used=ACSR MOOSE2.13Positive & Negative Sequence Line Impedance /KM(R1=R2)=0.158/KM(X1=X2)=0.806/KM2.14Zero Sequence Line impedance per KMR0=0.51/KMX0=3.02/KM2.153 fault current at 400/220KV WARANGAL 220 KV SubstationMagnitudeAngle=40000-792.161 fault current at 400/220KV WARANGAL 220 KV SubstationMagnitudeAngle=40000-792.17Tower Footing Resistance=102.18Direction - Zone I=Forward2.19Direction - Zone II=Forward2.20Direction - Zone III=Forward2.21Direction - Zone IV=Reverse2.22Direction - Zone V=Disabled2.23Direction - Zone 1B=Forward2.24Time delay - Zone I=INSTsec2.25Time delay - Zone II=0.4sec2.26Time delay - Zone III=1sec2.27Time delay - Zone IV=1sec2.28Time delay - Zone V=sec2.29Time delay - Zone 1B=INSTsec3.0220 KV 400/220KV WARANGAL C.T Parameters3.01C.T Ratio=1600-800/1A3.02Selected Ratio=800/13.03Class=PS3.04KPV=800V3.05Iex=(>): Phase Voltage Stages=ON9.4Uph-e> :Initial Stage for Minor Over voltage110%of Un=69.85Volts9.5TUph-e> :Time Delay for Initial Stage Setting=5Secs9.6Uph-e>> :Stage for Higher Voltage150%ofUn=95.25Volts9.7TUph-e>> :Time delay for Longer Setting=0Secs9.8Uph-e>(>) RESET: Drop out to Pick Up Ratio=0.959.9CURR.SUP.Uph-e>:=ON11.0DIRECTIONAL EARTH FAULT11.1Zero Sequence Source=3 x KV2Impedance (Z0s)3 x 220 x Min.1ph Fault Current=3 x 220^2 / (3 x 220 x 12)=31.755196304811.2Line Impedance of the Protected Line =Forward11.3Earth Fault Current Pick-up=20% of rated Full load current / C.T ratioSetting(3I0>)=(0.2 x MVA / (3 x KV)) / C.T ratio=(0.2 x 150000 / (1.732 x 220)) / ( 800 / 1)=0.09841486460.1A11.4Earth Fault Current Pick-up setting(3I0>>)=Disabled11.5Direction=Forward11.6Curve=Normal Inverse11.7TMS=0.33711.8Zero Sequence Voltage Stage 3U0>=Enabled11.9Characteristic Angle=Enabled11.10Tele protection Earth Fault:=N/ADirectional Comparison Pick-up13.0SOTF O/C12.1SOTF OVER CURRENT=Enabled12.2The magnitude of the current for picking up ofthe switchon to fault I>>>=2.5 times the FLC=2.5 x 150000 / (1.732 x 220)=984.1486458115A12.3Setting adopted = 2.5 times FLC/ CTRI>>>1.2301858073A

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220KV NAGARAM -1SET400/220 KV WARANGAL SUBSTATION220KV NAGARAM LINE- 1 (BAY 209)SIEMENS DISTANCE PROTECTION RELAY SETTING1 Device ConfigurationNo.FunctionScope103Setting Group Change OptionDisabled110Trip mode3 pole112Phase DistanceQuadrilateral113Earth DistanceQuadrilateral120Power Swing detectionEnabled121Teleprotection for Distance prot.POTT122DTT Direct Transfer TripDisabled124Instantaneous HighSpeed SOTF OvercurrentEnabled125Weak Infeed (Trip and/or Echo)Disabled126Backup overcurrentDisabled131Earth fault overcurrentTime Overcurrent Curve IEC132Teleprotection for Earth fault overcurr.Disabled133Auto-Reclose Function1 AR-cycle134Auto-Reclose control modewith Trip and Action time135Synchronism and Voltage CheckDisabled136Over / Underfrequency ProtectionDisabled137Under / Overvoltage ProtectionEnabled138Fault LocatorEnabled140Trip Circuit SupervisionDisabled2 General Device Settings2.1 Group DeviceNo.SettingsValue610Fault Display on LED / LCDDisplay Targets on TRIP only640Start image Default Displayimage 13 Power System Data 13.1 Group Power System Data 1; Group TransformersNo.SettingsValue201CT Starpointtowards Line203Rated Primary Voltage220 KV204Rated Secondary Voltage (Ph-Ph)110 V205CT Rated Primary Current800.00 A206CT Rated Secondary Current1A210U4 voltage transformer isUsy2 transformer211Matching ratio Phase-VT To Open-Delta-VT1.73215Matching ratio Usy1 / Usy21220I4 current transformer isNeutral Current (of the protected line)221Matching ratio I4/Iph for CT's13.2 Group Power System Data 1; Group Power SystemNo.SettingsValue207System Starpoint isSolid Earthed230Rated Frequency50 Hz235Phase SequenceL1 L2 L3236Distance measurement unitkm237Setting format for zero seq.comp. formatZero seq. comp. factors RE/RL and XE/XL0238AEarth Fault O/C: setting for 1pole ARall stages together3.3 Group Power System Data 1; Group BreakerNo.SettingsValue0240AMinimum TRIP Command Duration0.10 sec0241AMaximum Close Command Duration0.10 sec242Dead Time for CB test-autoreclosure1.00 sec4 Settings groups4.1 Group Power System Data 2; Group Power SystemNo.SettingsValue1103Measurement: Full Scale Voltage (100%)220 KV1104Measurement: Full Scale Current (100%)800.00 A1105Line Angle78.911211Angle of inclination, distance charact.78.911107P,Q operational measured values signnot reversed1110x' - Line Reactance per length unit0.16431111Line Length12.6 KM1116Zero seq. comp. factor RE/RL for Z10.741117Zero seq. comp. factor XE/XL for Z10.921118Zero seq. comp.factor RE/RL for Z1B...Z50.741119Zero seq. comp.factor XE/XL for Z1B...Z50.924.2 Group Power System Data 2; Group Line StatusNo.SettingsValue1130APole Open Current Threshold0.10 A1131APole Open Voltage Threshold30 V1132ASeal-in Time after ALL closures0.20 sec1133Aminimal time for line open before SOTF0.25 sec1134Recognition of Line Closures withCBaux OR Current or Manual close BI1135RESET of Trip Commandwith CBaux open AND I < PoleOpenCurrent1136open pole detectorwith measurement (U/I,trip,pickup,CBaux)1140ACT Saturation Threshold5.0 A1150ASeal-in Time after MANUAL closures0.30 sec1151Manual CLOSE COMMAND generationNO1152MANUAL Closure Impulse after CONTROL4.3 Group Power System Data 2; Group Trip 1-/3-poleNo.SettingsValue11553 pole couplingwith Trip1156ATrip type with 2phase faults3pole4.4 Group Distance protection, general settings; Group GeneralNo.SettingsValue1201Distance protectionON1202Phase Current threshold for dist. Meas.0.10 A1211Angle of inclination, distance charact.78.911208Series compensated lineNO1232Instantaneous trip after SwitchOnToFaultwith Zone Z1B1241R load, minimum Load Impedance (ph-e)129.1 Ohms1242PHI load, maximum Load Angle (ph-e)37 1243R load, minimum Load Impedance (ph-ph)258.1 Ohms1244PHI load, maximum Load Angle (ph-ph)45 1317ASingle pole trip for faults in Z2NO1357Z1B enabled before 1st AR (int. or ext.)YES4.5 Group Distance protection, general settings; Group Earth faultsNo.SettingsValue12033I0 threshold for neutral current pickup0.10 A12043U0 threshold zero seq. voltage pickup5 V1207A3I0>-pickup-stabilisation (3I0> /Iphmax)0.151209Acriterion of earth fault recognition3I0> OR 3U0>1221ALoop selection with 2Ph-E faultsall loops4.6 Group Distance protection, general settings; Group Time DelaysNo.SettingsValue1210Condition for zone timer startwith distance pickup1305T1-1phase, delay for single phase faults0.00 sec1306T1multi-ph, delay for multi phase faults0.00 sec1315T2-1phase, delay for single phase faults0.40 sec1316T2multi-ph, delay for multi phase faults0.40 sec1325T3 delay1.00 sec1335T4 delay1.00 sec1345T5 delayN/A1355T1B-1phase, delay for single ph. Faults0.00 sec1356T1B-multi-ph, delay for multi ph. Faults0.00 sec4.7 Group Distance zones (quadrilateral); Group Zone Z1No.SettingsValue1301Operating mode Z1Forward1302R(Z1), Resistance for ph-ph-faults0.630 Ohms1303X(Z1), Reactance1.620 Ohms1304RE(Z1), Resistance for ph-e faults10.072 Ohms1305T1-1phase, delay for single phase faults0.00 sec1306T1multi-ph, delay for multi phase faults0.00 sec1307Zone Reduction Angle (load compensation)0 4.8 Group Distance zones (quadrilateral); Group Zone Z1Bexten.No.SettingsValue1351Operating mode Z1B (_verreach zone)Forward1352R(Z1B), Resistance for ph-ph-faults0.788 Ohms1353X(Z1B), Reactance2.430 Ohms1354RE(Z1B), Resistance for ph-e faults10.216 Ohms1355T1B-1phase, delay for single ph. Faults0.00 sec1356T1B-multi-ph, delay for multi ph. Faults0.00 sec1357Z1B enabled before 1st AR (int. or ext.)YES4.9 Group Distance zones (quadrilateral); Group Zone Z2No.SettingsValue1311Operating mode Z2Forward1312R(Z2), Resistance for ph-ph-faults0.986 Ohms1313X(Z2), Reactance3.440 Ohms1314RE(Z2), Resistance for ph-e faults10.397 Ohms1315T2-1phase, delay for single phase faults0.40 sec1316T2multi-ph, delay for multi phase faults0.40 sec1317ASingle pole trip for faults in Z2NO4.10 Group Distance zones (quadrilateral); Group Zone Z3No.SettingsValue1321Operating mode Z3Forward1322R(Z3), Resistance for ph-ph-faults3.132 Ohms1323X(Z3), Reactance14.940 Ohms1324RE(Z3), Resistance for ph-e faults12.603 Ohms1325T3 delay1.00 sec4.11 Group Distance zones (quadrilateral); Group Zone Z4No.SettingsValue1331Operating mode Z4Reverse1332R(Z4), Resistance for ph-ph-faults0.158 Ohms1333X(Z4), Reactance0.405 Ohms1334RE(Z4), Resistance for ph-e faults2.518 Ohms1335T4 delay1.00 sec4.12 Group Distance zones (quadrilateral); Group Zone Z5No.SettingsValue1341Operating mode Z5Inactive1342R(Z5), Resistance for ph-ph-faultsN/A1343X(Z5)+, Reactance for Forward directionN/A1344RE(Z5), Resistance for ph-e faultsN/A1345T5 delayN/A1346X(Z5)-, Reactance for Reverse directionN/A4.13 Group Power SwingNo.SettingsValue2002Power Swing Operating modeZ2 to Z5 Block2006Power swing tripYES2007Trip delay after Power Swing Blocking0.08 sec4.14 Group Teleprotection for Distance prot.No.SettingsValue2101Teleprotection for Distance protectionPUTT(Z1B)2102Type of LineTwo Terminals2103ATime for send signal prolongation0.07 sec2109ATransient Block.: Duration external flt.oo sec2110ATransient Block.: Blk.T. after ext. flt.0.05 sec4.15 Group Instantaneous HighSpeed SOTF OvercurrentNo.SettingsValue2401Inst. High Speed SOTF-O/C isON2404I>>> Pickup2.5 A4.16 Group Measurement Supervision; Group Balance / Summ.No.SettingsValue2901Measurement SupervisionON2902AVoltage Threshold for Balance Monitoring102903ABalance Factor for Voltage Monitor0.82904ACurrent Balance Monitor0.12905ABalance Factor for Current Monitor0.052906ASummated Current Monitoring Threshold0.10 A2907ASummated Current Monitoring Factor0.12908AT Balance Factor for Voltage Monitor5 sec2909AT Current Balance Monitor5 sec4.17 Group Measurement Supervision; Group Fuse Fail. Mon.No.SettingsValue2910Fuse Failure MonitorON2911AMinimum Voltage Threshold U>50 V2912AMaximum Current Threshold I0.05 A2944Minimum value U1>20 V4.20 Group Earth fault overcurrent; Group GeneralNo.SettingsValue3101Earth Fault overcurrent functionON3102Block E/F for Distance protectionwith every Pickup3174Block E/F for Distance Protection Pickupin each zone3103Block E/F for 1pole Dead timeYES3104AStabilisation Slope with Iphase10%3109Single pole trip with earth flt.prot.YES31702nd harmonic ratio for inrush restraint15%3171Max.Current, overriding inrush restraint7.50 A3172Instantaneous mode after SwitchOnToFaultwith Pickup and direction3173Trip time delay after SOTF0.00 sec4.21 Group Earth fault overcurrent; Group 3I0>>>No.SettingsValue3110Operating modeInactive31113I0>>> PickupN/A3112T 3I0>>> Time delayN/A3113Instantaneous trip via Teleprot./BIN/A3114Instantaneous trip after SwitchOnToFaultN/A3115Inrush BlockingN/A4.22 Group Earth fault overcurrent; Group 3I0>>No.SettingsValue3120Operating modeInactive31213I0>> PickupN/A3122T 3I0>> Time DelayN/A3123Instantaneous trip via Teleprot./BIN/A3124Instantaneous trip after SwitchOnToFaultN/A3125Inrush BlockingN/A4.23 Group Earth fault overcurrent; Group 3I0>No.SettingsValue3130Operating modeInactive31313I0> PickupN/A3132T 3I0> Time DelayN/A3133Instantaneous trip via Teleprot./BIN/A3134Instantaneous trip after SwitchOnToFaultN/A3135Inrush BlockingN/A4.24 Group Earth fault overcurrent; Group 3I0 InverseTimeNo.SettingsValue3140Operating modeForward31413I0p Pickup0.10 A31433I0p Time Dial0.34 sec3147Additional Time Delay0.00 sec3148Instantaneous trip via Teleprot./BIYES3149Instantaneous trip after SwitchOnToFaultNO3150Inrush BlockingYES3151IEC CurveNormal Inverse4.25 Group Earth fault overcurrent; Group DirectionNo.SettingsValue3160Polarizationwith U0 + IY (dual polarized)3162AALPHA, lower angle for forward direction338 3163ABETA, upper angle for forward direction122 3164Min. zero seq.voltage 3U0 for polarizingN/A3166Min. neg. seq. polarizing voltage 3U25.0 V3167Min. neg. seq. polarizing current 3I20.50 A3168Compensation angle PHI comp. for Sr255 3169Forward direction power threshold0.3 VA4.26 Group Automatic Reclosure; Group GeneralNo.SettingsValue3401Auto-Reclose functionON3402CB ready interrogation at 1st tripNO3403Reclaim time after successful AR cycle3.00 sec3404AR blocking duration after manual close1.00 sec3406Evolving fault recognitionwith Trip3407Evolving fault (during the dead time)starts 3pole AR-cycle3408AR start-signal monitoring time0.20 sec3409Circuit Breaker (CB) Supervision Time3.00 sec3410Send delay for remote close commandsec3411AMaximum dead time extensionsec4.27 Group Automatic Reclosure; Group 1st AR-cyleNo.SettingsValue3450Start of AR allowed in this cycleYES3451Action time0.20 sec3456Dead time after 1pole trip1.20 sec3457Dead time after 3pole trip0.50 sec3458Dead time after evolving fault1.20 sec3459CB ready interrogation before reclosingNO3460Request for synchro-check after 3pole ARNO4.28 Group Automatic Reclosure; Group 3pTRIP/DLC/RDTNo.SettingsValue34303pole TRIP by ARYES3431Dead Line Check or Reduced Dead TimeWithout3438Supervision time for dead/ live voltage0.10 sec3440Voltage threshold for live line or bus48 V3441Voltage threshold for dead line or bus30 V4.29 Group Automatic Reclosure; Group Start AR with..No.SettingsValue3420AR with distance protectionYES3421AR with switch-onto-fault overcurrentNO3423AR with earth fault overcurrent prot.NO4.30 Group Voltage Protection; Group U> Phase-EarthNo.SettingsValue3701Operating mode Uph-e overvoltage prot.ON3702Uph-e> Pickup69.9 V3703T Uph-e> Time Delay5.00 sec3704Uph-e>> Pickup95.3 V3705T Uph-e>> Time Delay0.10 sec3709AUph-e>(>) Reset ratio0.954.31 Group Fault LocatorNo.SettingsValue3802Start fault locator withPickup3806Load CompensationYES

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SET-2 CAL400/220 KV WARANGAL SUBSTATION220KV NAGARAM LINE- 1 (BAY 209)ABB DISTANCE PROTECTION RELAY SETTING CALCULATIONType : ABB make REL670System ParticularsALine Parameters1Rated line voltage220KV2Line Length12.56KM3Max power flow in the line (assumed)150MVA4Postive sequence resistance0.079ohms/km5Postive sequence reactance0.403ohms/km6Zero sequence resistance0.255ohms/km7Zero sequence reactance1.51ohms/km8Zero sequence mutual resistance (MR)0ohms/km(If Parallel line in service Mutual Impedance is 60% of zero seq.)9Zero sequence mutual reactance (MX)0ohms/kmBAdjoining line parametersB.1Adjacent Line(Short Line)1Length of adjacent line8.778KM2Postive sequence resistance0.158ohms/km3Postive sequence reactance0.806ohms/km4Zero sequence resistance0.51ohms/km5Zero sequence reactance3.02ohms/kmB.2longest line1Length of longest line79.6KM2Postive sequence resistance0.07487ohms/km3Postive sequence reactance0.39925ohms/km4Zero sequence resistance0.21998ohms/km5Zero sequence reactance1.33923ohms/kmB.3Transformer1Transformer impedance in p.u0.1252Transformer rating100MVACSource impedance1Local End max. Fault MVA =1.732*220*4015241.6MVA2Local End min. Fault MVA =30 % of 15241.64572MVA3Local End Z magnitude = (220 x 220) / 15241.63.176ohms4Local End Z argument84deg.5Remote End Max. Fault MVA (Assumed -Not available)7500MVA6Remote End Min. Fault MVA (Assumed -Not available)3000MVA7Remote End Z magnitude = (220 x 220) / 75006.45ohms8Remote End Z argument84deg.9Postive sequence resistance at local end = line length x + ve seq. R0.992ohms10Postive sequence reactance at local end = line length x +ve seq.X5.062ohms11Postive sequence resistance at remote end = line length x +ve seq. R0.693462ohms12Postive sequence reactance at remote end = line length x +ve seq. X3.537534ohmsDCT and PT Detail1CT primary rating800A2CT secondary rating1A3PT primary rating220000V4PT secondary rating110VERelay Detail1Rated current1A2Rated voltage110VFSystem Parameters1Arc Resistance + Tower footing resistance - Rfn50.000ohms2Rf for phase to phase fault10.0003Imp Ratio = CTR / PTR0.4004% for zone-1 setting0.8005% of the adjoining line for Zone20.5006% of the adjoining line for Zone 31.100GProtected Line Impedance in CT secondary1Postive sequence resistance = line length x + ve seq. R x Imp Ratio =0.397ohms2Postive sequence reactance = line length x + ve seq. X x Imp Ratio =2.025ohms3Zero sequence resistance = line length x Z0 x Imp Ratio =1.281ohms4Zero sequence reactance = line length x Z0X x Imp Ratio =7.586ohms5Zero sequence mutual resistance = line length x MR x Imp Ratio =0.000ohms6Zero sequence mutual reactance = line length x MX x Imp Ratio =0.000ohmsHAdjacent Line Impedance in CT secondary1Postive sequence resistance = line length x + ve seq. R x Imp Ratio =0.555ohms2Postive sequence reactance = line length x + ve seq. X x Imp Ratio =2.830ohms3Zero sequence resistance = line length x Z0 x Imp Ratio =1.791ohms4Zero sequence reactance = line length x Z0X x Imp Ratio =10.604ohmsILongest Line Impedance in CT secondary1Postive sequence resistance = line length x + ve seq. R x Imp Ratio =2.384ohms2Postive sequence reactance = line length x + ve seq. X x Imp Ratio =12.712ohms3Zero sequence resistance = line length x Z0 x Imp Ratio =7.004ohms4Zero sequence reactance = line length x Z0X x Imp Ratio =42.641ohmsJZone I : Reach Setting Proposed at 80% of the protected Line1Reach For Postive sequence resistance(80% line length x Postive sequence resistance x Imp Ratio=0.8 x 12.56 x 0.079 x 0.40.318ohms2Reach For Postive sequence reactance(80% line length x Postive sequence reactance x Imp Ratio=0.8 x 12.56 x 0.403 x 0.41.620ohms3Reach For Zero sequence resistance(80% line length x Zero sequence resistance x Imp Ratio=0.8 x 12.56 x 0.255 x 0.41.025ohms4Reach For Zero sequence reactance(80% line length x Zero sequence reactance x Imp Ratio=0.8 x 12.56 x 1.51 x 0.46.069ohms5Fault Resistance - ph-e= 0.318 + ( 1.62 x TAN ( 25 ) =1.073= 4.5 x 0.318 =1.4310= 50 x 0.4 =20.000Maximum of 1.073 and 20 =20.000Minimum of 1.431 and 20 =1.431ohmsHence fault resistance between phase to earth =1.431ohms6Fault Resistance - ph-ph= 0.318 + ( 1.62 x TAN ( 25 ) =1.073= 3 x 0.318 =0.954= 10 x 0.4 =4.000Maximum of 1.073 and 4 =4.000Minimum of 0.954 and 4 =0.954Hence fault resistance between phase to phase =2 times of the above1.908ohmsKZone II: Reach Setting at (100% of the protected Line +50% of the shortest line at Next substation)1Reach For Postive sequence resistance100% line length x Postive sequence resistance x Imp Ratio +50% shortest line length x Postive sequence resistance x Imp Ratio=12.56 x 0.079 x 0.4 + 0.5 x 12.56 x 0.079 x 0.40.674ohms2Reach For Postive sequence reactance100% line length x Postive sequence reactance x Imp Ratio +50% shortest line length x Postive sequence reactance x Imp Ratio=12.56 x 0.403 x 0.4 + 0.5 x 12.56 x 0.403 x 0.43.440ohms3Reach For Zero sequence resistance100% line length x Zero sequence resistance x Imp Ratio +50% shortest line length x Zero sequence resistance x Imp Ratio=12.56 x 0.255 x 0.4 + 0.5 x 12.56 x 0.255 x 0.42.176ohms4Reach For Zero sequence reactance100% line length x Zero sequence reactance x Imp Ratio +50% shortest line length x Zero sequence reactance x Imp Ratio=12.56 x 1.51 x 0.4 + 0.5 x 12.56 x 1.51 x 0.412.888ohms5Fault Resistance - ph-e3.033ohms2.2783.03320.0006Fault Resistance - ph-ph4.044ohms2.0224.000LZone III: Reach Setting Proposed at 110% of the prot Line & 100%of the longest line1Reach For Postive sequence resistance110% line length x Postive sequence resistance x Imp Ratio +100% Longest line length x Postive sequence resistance x Imp Ratio= 1.1 x 12.56 x 0.079 x 0.4 + 79.6 x 0.079 x 0.42.952ohms2Reach For Postive sequence reactance110% line length x Postive sequence reactance x Imp Ratio +100% Longest line length x Postive sequence reactance x Imp Ratio= 1.1 x 12.56 x 0.403 x 0.4 + 79.6 x 0.403 x 0.415.059ohms3Reach For Zero sequence resistance110% line length x Zero sequence resistance x Imp Ratio +100% Longest line length x Zero sequence resistance x Imp Ratio= 1.1 x 12.56 x 0.255 x 0.4 + 79.6 x 0.255 x 0.49.528ohms3Reach For Zero sequence reactance110% line length x Zero sequence reactance x Imp Ratio +100% Longest line length x Zero sequence reactance x Imp Ratio= 1.1 x 12.56 x 1.51 x 0.4 + 79.6 x 1.51 x 0.456.423ohms5Fault Resistance - ph-e13.284ohms9.9713.28420.0006Fault Resistance - ph-ph17.712ohms8.8564.000MPower Swing Block Function1Reactive direction are set so that the inner characteristic covers completely all the distance protection zones,which are to be blocked by the PSD function.At least 10%of additional safely margin2Reactive Reach of the Inner characteristic of the Power swing blocking element = 1.1* X316.5653Reactive Reach of the Inner characteristic of the Power swing blocking element = 1.1(2R3+Rf)21.1064Reactive Reach of the Outer characteristic of the Power swing blocking element20.7065Reactive Reach of the Outer characteristic of the Power swing blocking element26.383NSource Impedance refered to CT secondary1Local End Z magnitude1.2702Local End Z argument80.0003Remote End Z magnitude2.5804Remote End Z argument80.0005Postive sequence resistance at local end in ohms(RISA)0.3976Postive sequence reactance at local end in ohms(XISA)2.0257Postive sequence resistance at remote end in ohms(R1SB)0.2778Postive sequence reactance at remote end in ohms(X1SB)1.415OPhase Selection1X1Phs30.1172X0Phs112.8473Calculated RFPEphs36.8562.1924Calculated RFPPphs32.4715Zloadmin =(KV)2\MVA104.5446RFPEphs36.8567Conditions for 2nd Zone21.3968Conditions for 4th Zone3.0449Conditions for 3-ph fault37.86132.47110RFPPphs32.47137.8616.86910.1910.906

&LSIEMENS&C400/220kV WARANGAL SUBSTATION&C&P OF 205&LSIEMENS&C400/230kV PONDICHERRY SUBSTATION&C&P OF 208

SET-2-SETTING400/220 KV WARANGAL SUBSTATION220KV NAGARAM LINE- 1 (BAY 209)ABB DISTANCE PROTECTION RELAY SETTINGType : ABB make REL670DESCRIPTIONPARAMETER SETTINGRECOMMENDEDMax. load current \ CT primary currentlb (FLC \ CT Primary)0.492lminop0.200Distance Protection zone 1operating mode and directionaity of zone IoperationForwardSettings of Phase to Phase measurementOperation of distance protection zone I for Ph-IOperation PPOnPositive sequence reactance of zone 1 for ph-ph faultX1PP1.620Positive sequence reactance of zone 1 for ph-ph faultR1PP0.318Resisitive reach of distance protection for ph-ph faultsRFPP1.908Operating mode of time delayed trip for the distance protection zone 1 for ph-ph faultsTimer t1PPOnTime delayed trip operation for the distance protection zone 1 for ph-ph faultst1PP0.000Settings of Phase to earth elementOperation of distance protection zone I for Ph-IOperation PEOnX1PE1.620Positive sequence resistive reach of distance zone 1 for ph-E faultR1PE0.318Zero sequence line reactance included in distance protection zone I for Ph-E faultsXOPE6.069Zero sequence line reactance included in distance protection zone I for Ph-E faultsROPE1.025Resisitive reach for zone 1 Ph-E faultsRFPE1.431Operating mode of time delayed trip for the distance protection zone 1 for ph-E faultsTimer t1PPOnTime delayed trip operation for the distance protection zone 1 for ph-ph faultst1PE0.000Distance Protection zone IIZONE IIoperating mode and directionaity of distance zone IIoperationForwardSettings of Phase to Phase measurementOperation of distance protection zone 2 for Ph-Ph faultOperation PPOnPositive sequence reactance of zone 2 for ph-ph faultX1PP3.440Positive sequence reactance of zone 2 for ph-ph faultR1PP0.674Resisitive reach of distance protection for ph-ph faultsRFPP4.044Operating mode of time delayed trip for the distance protection zone 2 for ph-ph faultsTimer t1PPOnTime delayed trip operation for the distance protection zone 2 for ph-ph faultst1PP0.400Settings of Phase to earth elementOperation of distance protection zone 2 for Ph-E faultsOperation PEOnX1PE3.440Positive sequence resistive reach of distance zone 2 for ph-E faultR1PE0.674Zero sequence line reactance included in distance protection zone 2 for Ph-E faultsXOPE12.888Zero sequence line reactance included in distance protection zone 2 for Ph-E faultsROPE2.176Resisitive reach for zone 2 Ph-E faultsRFPE3.033Operating mode of time delayed trip for the distance protection zone 2 for ph-E faultsTimer t1PPOnTime delayed trip operation for the distance protection zone 2 for ph-ph faultst1PE0.400Distance protection zone lllZONEIIIOperating mode and directionality of zone 3OperationForwardSETTINGS OF PHASE TO PHASE MEASUREMENTOperation of Distance protection Zone 3 for Ph faultOperation PPOnPositive sequence reactance of zone 3 for phase to phase faultsX1PP15.059Positive sequence resistance of zone 3 for phase to phase faultsR1PP2.952Positive reach of distance protectin for phase to phase faultsRFPP17.712Operating mode of time delayed trip for the distance protection zone 3 for Ph-Ph faultsTimer t3PPOnTime delaye trip operation for the distnce protection zone 3 for Ph-Ph faultst3PP1.000SETTINGS OF PHASE TO EARTH MEASUREMENTOperating mode of distance protection zone 3 for Ph-E faultsOperation PEOnPositive sequence reactive reach of distance zone 3 for Ph-E faultsX1PE15.059Positive sequence resistive reach of distance zone 3 for Ph-E faultsR1PE2.952zero sequence line reactance included in distance protection zone 3 for Ph-E faultsX0PE56.423Zero sequence line reactance included in distance protection zone 3 for Ph-E faultsR0PE2.176Resistive reach for zone 3 for Ph-E faultsRFPE13.284Operating mode of time delayed trip for the distance protection zone 3 for Ph-E faultsTimer t3PEOnTime delayed trip operation of the distance protection zone 3 for Ph-E faultst3PE1.000Manual energising timeT manenerg0.200PHASE SELECTIONoperation of phase selectionoperationOnpositive sequence reactive reach for ph-ph loop measurementX1PP15.059Resistive reach for ph-ph loop measurementRFPP17.712positive sequence reactive reach for ph-e loop measurementX1PE15.059Zero sequence reactive for ph-e loop measurementXOPE56.423Resistive reach for ph-e loop measurementRFPE13.284Power swing blockingPSBpower swing function on/offoperationOnOperating mode of internal PSD functiondetectiononpositive sequence reactive reach of the inner boundaryX1IN16.565positive sequence reactive reach of the inner boundaryR1IN21.106reach multiplication for the outer reactive boundaryKX1.250reach multiplication for the outer reactive boundaryKR1.250Initial PSD timertp10.045Fast PSD timertp20.015Hold timer for activation of fast PSD timertw0.250Hold timer for PSD detectedth0.5sTimer over coming 1-phase reclosing dead timetEF3 sTimer to time delay block by the residual currenttR10.300On delay timer for blocking of output signal at very slow swingstR22.000Scheme communication logicZcomOperation of zoom scheme communication logicOperationOnOperation modeSchemetypePermissive URCoordination timerT coord0.050sMinimum duration of a carrier send signalT sendmin0.1sOperation mode for an unblocking signalUnblockOffSecurity timerT security0.035sOperation mode of current reversal functionCurrevOffPick up time of current reversal functionT pickupNATime delay for current reversalT delayNAOperation mode of WEI functionWEIOffCoordination time for WEI functionTweiNAVoltage detection for PH-E faultsUPN