Rajan1

ANNEXURE I (1/5)

Rajan1

ANNEXURE I (2/5)

Rajan1

ANNEXURE I (3/5)

Rajan1

ANNEXURE I (4/5)

Rajan1

ANNEXURE I (5/5)

server

Typewritten Text

Annexure-II(1/5)

server

Typewritten Text

Annexure-II(2/5)

server

Typewritten Text

Annexure-II(3/5)

server

Typewritten Text

Annexure-II(4/5)

server

Typewritten Text

Annexure-II(5/5)

Rajan1

ANNEXURE III (1/2)

Rajan1

ANNEXURE III (2/2)

Multiple tripping and generation loss at Idu

station of KSEB at 1

Figure 1

All running units and connected 220kV lines at Idukki

triggering incident was failure of

loss due to tripping of units was

Multiple tripping and generation loss at Idukki hydro power

station of KSEB at 18:17 hrs on 3rd November 2013

1 : Single Line Diagram of Iduki hydro station

All running units and connected 220kV lines at Idukki hydro power Station (KSEB) tripped. The

triggering incident was failure of circuit breaker of Unit#5 at Idukki hydro station.

400 MW.

ki hydro power

November 2013

hydro power Station (KSEB) tripped. The

circuit breaker of Unit#5 at Idukki hydro station. The generation

Observation from synchrophasor data:

From fig.2 it can be observed that the change in frequency was 0.2

Idukki hydro station.

From fig. 3 it can be observed that

milli seconds.

Observation from synchrophasor data:

Figure 2 : Frequency profile

it can be observed that the change in frequency was 0.23 Hz due to generation loss at

Figure 3 : 400kV Thrissur Bus voltage

it can be observed that there was dip in voltage in all the three phases for around 720

Hz due to generation loss at

there was dip in voltage in all the three phases for around 720

Figure

From the fig. 4 it can be observed that the

currents. As per preliminary report received from KSEB bus bar protection got operated at Idukki

station due to failure of breaker of Unit#5

was reported by KSEB in 26th

protection sub

provision for isolating one bus section during fault in the adjacent bus bar. This had led to tripping of

entire iddukki station.

Restoration

Sl.

No.

Equipment

1 Unit#1

2 Unit#2

3 Unit#3

4 Unit#6

5 Unit#4

6 220kV Iduki-Udumalpet

7 220kV Iduki-New pallom

8 220kV Iduki-Kalamasery-

9 220kV Iduki-Kalamasery-

10 220kV Iduki-Lower periyar

11 220kV Iduki-Lower periyar

12 220kV Iduki-Madakathara

Further action required:Bus bar protection scheme is to

fault entire station will not be affected.

hydro station.

Figure 4 : Zero & Negitive sequence current

it can be observed that there was no significant rise in negative and zero sequence

s per preliminary report received from KSEB bus bar protection got operated at Idukki

breaker of Unit#5 which led to the multiple tripping and generation loss.

protection sub-committee that present bus-bar scheme does not have

provision for isolating one bus section during fault in the adjacent bus bar. This had led to tripping of

Date of

restoration

Time of

restoration

3-11-2013 21:07

3-11-2013 19:17

3-11-2013 --

3-11-2013 --

3-11-2013 --

3-11-2013 19:15

3-11-2013 19:04

-1 3-11-2013 18:56

-2 3-11-2013 --

Lower periyar-2 3-11-2013 19:44

Lower periyar-1 3-11-2013 19:49

Madakathara 3-11-2013 --

Further action required: is to be modified/ replaced bat Idukki station so that in the vent of bus

fault entire station will not be affected. This will in turn improve the reliability and security of Idukki

e and zero sequence

s per preliminary report received from KSEB bus bar protection got operated at Idukki

which led to the multiple tripping and generation loss. It

bar scheme does not have

provision for isolating one bus section during fault in the adjacent bus bar. This had led to tripping of

restoration

d/ replaced bat Idukki station so that in the vent of bus

and security of Idukki

From To Element Name CodeDeman

dMW

Gen (Int)MW

Freq.Hz

Voltage

kV

03.11.2013 Idukki 18:18 21:07 Generator #1 tripped U#1186A &B, Bus 1& Bus 2 Differential protection 90 Synchronized

03.11.2013 Idukki 18:18 19:17Generator #2tripped U#2

186A &B, Bus 1& Bus 2 Differential protection Synchronized

03.11.2013 Idukki 18:18Generator #4tripped U#4

186A &B, Bus 1& Bus 2 Differential protection 60 Not Synchronized

03.11.2013 Idukki 18:18 Generator #5 tripped U#5186A &B, Bus 1& Bus 2 Differential protection Not Synchronized

The CB of U#5 burst

at18:18Hrs leading to the

trippings of other M/Cs &feeders .

03.11.2013

03.11.2013 Idukki 18:18 19:15 Feeder tripped Idukki-Udumalpet IDUD186A &B, Bus 1& Bus 2 Differential protection 115 Feeder Charged

03.11.2013 Idukki 18:18 19:04 Feeder tripped Idukki-New Pallom IDNE186A &B, Bus 1& Bus 2 Differential protection 45 218 Feeder Charged

03.11.2013 Idukki 18:18 18:56 Feeder tripped Idukki-Kalamassery 1 IDKL#1186A &B, Bus 1& Bus 2 Differential protection 82 220 Feeder Charged

03.11.2013 Idukki 18:18 19:49 Feeder tripped Idukki-Lower Periyar 1 IDLP#1 Bus Differential protection 45 218 Feeder Charged03.11.2013 Idukki 18:18 19:44 Feeder tripped Idukki-Lower Periyar 2 IDLP#2 Bus Differential protection 35 222 Feeder Charged

Grid Elements Involved(Furnish Each element separately)

Interruption as per

chronological sequence

KERALA STATE ELECTRICITY BOARDFIRST INFORMATION REPORT OF GRID INCIDENT / GRID DISTURBANCE(To be submitted with minimum possible time)-Maximum time 24 hrs.

SLDC Kerala/GI-GD/2013-14/ Dated: 03.11.2013

Date Location /Area

Event Description

Details of Relay indications and Flags

Other relevant

system data.

Pre-Fault condition Remarks and Further

informations if any.

Remedial Measures taken.

Multiple tripping and generation loss at Idu

station of KSEB at 17:22 hrs on 7

Figure 1

All running units and connected 220kV lines at Idukki

triggering incident was failure of Bus Potential transformer. The generation loss

units was 590MW.

Multiple tripping and generation loss at Idukki hydro power

station of KSEB at 17:22 hrs on 7th November 2013

1 : Single Line Diagram of Iduki hydro station

All running units and connected 220kV lines at Idukki hydro power Station (KSEB) tripped. The

triggering incident was failure of Bus Potential transformer. The generation loss

ki hydro power

November 2013

hydro power Station (KSEB) tripped. The

triggering incident was failure of Bus Potential transformer. The generation loss due to tripping of

Observation from synchrophasor data:

From fig.2 it can be observed that the change in frequency was 0.26 Hz due to generation loss at

Iduki hydro station.

From fig. 3 it can be observed that a fault had occurred in R

Phase bus potential transformer at Iduki hydro station.

Observation from synchrophasor data:

Figure 2 : Frequency profile

it can be observed that the change in frequency was 0.26 Hz due to generation loss at

Figure 3 : 400kV Thrissur Bus voltage

it can be observed that a fault had occurred in R-Phase. Hence there was failure of R

Phase bus potential transformer at Iduki hydro station.

it can be observed that the change in frequency was 0.26 Hz due to generation loss at

Phase. Hence there was failure of R-

Figure

From the fig. 4 it can be observed that the fault

delayed clearance of fault.

As per preliminary report received from KSEB bus bar protection got operated at Idukki station due

to failure of bus PT which led to the multiple

KSEB in 26th

protection sub-committee that present bus

isolating one bus section during fault in the adjacent bus bar. This had led to tripping of entire

iddukki station.

Restoration

Sl.

No.

Equipment

1 Unit#1

2 Unit#2

3 Unit#3

4 Unit#6

5 Unit#4

6 220kV Iduki-Udumalpet

7 220kV Iduki-Kalamasery-

8 220kV Iduki-Kalamasery-

9 220kV Iduki-Lower periyar

10 220kV Iduki-Lower periyar

11 220kV Iduki-Madakathara

Further action required:Bus bar protection scheme is to be modified/ replaced bat Idukki station so that in the vent of bus

fault entire station will not be affected. This will in turn improve the reliability and security of Idukki

hydro station

Figure 4 : Zero & Negitive sequence current

it can be observed that the fault got cleared in 160ms time. Hence there was no

As per preliminary report received from KSEB bus bar protection got operated at Idukki station due

to failure of bus PT which led to the multiple tripping and generation loss. . It was reported by

committee that present bus-bar scheme does not have provision for

isolating one bus section during fault in the adjacent bus bar. This had led to tripping of entire

Date of

restoration

Time of

restoration

7-11-2013 18:57

7-11-2013 19:00

7-11-2013 19:23

7-11-2013 19:15

8-11-2013 15:56

7-11-2013 19:29

-1 7-11-2013 20:09

-2 7-11-2013 19:01

iyar-2 7-11-2013 19:04

Lower periyar-1 8-11-2013 11:06

Madakathara --- ---

Further action required: Bus bar protection scheme is to be modified/ replaced bat Idukki station so that in the vent of bus

fault entire station will not be affected. This will in turn improve the reliability and security of Idukki

got cleared in 160ms time. Hence there was no

As per preliminary report received from KSEB bus bar protection got operated at Idukki station due

. It was reported by

bar scheme does not have provision for

isolating one bus section during fault in the adjacent bus bar. This had led to tripping of entire

Time of

restoration

Bus bar protection scheme is to be modified/ replaced bat Idukki station so that in the vent of bus

fault entire station will not be affected. This will in turn improve the reliability and security of Idukki

From To Element Name CodeDeman

dMW

Gen (Int)MW

Freq.Hz

Voltage

kV

07.11.2013 Idukki 17:22 18:57 Generator #1 tripped U#1Bus Differential protection ,Non lockout 30x5 1R,86G1 120 Synchronized

07.11.2013 Idukki 17:22 19:00Generator #2tripped U#2

Bus Differential protection ,Non lockout 30x5 2R 130 Synchronized

07.11.2013 Idukki 17:22 19:23Generator #3tripped U#3

Bus Differential protection ,Non lockout 30x5 3R 120 Synchronized

07.11.2013 Idukki 17:22 Generator #4 tripped U#4Cable over current ,Bus bar protection 94 120 Not Synchronized

07.11.2013 Idukki 17:22 19:15 Generator #6 tripped U#6,Bus bar protection 94,Bus Differential protection 120 Synchronized

07.11.2013 Idukki 17:22 19:29 Feeder tripped Idukki-Udumalpet 2IDUD 186A &B, PE,PAR 30 211 Feeder Charged

07.11.2013 Idukki 17:22 18:46 Feeder tripped Idukki-New Pallom 2IDNE 186A &B, PAR,PE,PTA5 130 225 Feeder Charged

07.11.2013 Idukki 17:22 20:09 Feeder tripped Idukki-Kalamassery 1 2IDKL#1 186A &B, PE,PTA5 130 220 Feeder Charged

07.11.2013 Idukki 17:22 19:01 Feeder tripped Idukki-Kalamassery 2 2IDKL#2 186A &B, PE,PAR 90 218 Feeder Charged

07.11.2013 Idukki 17:22 Feeder tripped Idukki-Lower Periyar 1 2IDLP#1 Bus Differential protection 120 222 Feeder Not Charged

07.11.2013 Idukki 17:22 19:04 Feeder tripped Idukki-Lower Periyar 2 2IDLP#2 Bus Differential protection 120 224 Feeder Charged

07.11.2013 Idukki 17:22 Feeder tripped Idukki-Madakkathara 2IDMD 222 Feeder Not Charged

The R phase PT of IDMD burst

at17:22Hrs leading to the trippings of other IDKI M/Cs

&feeders .

07.11.2013 Arecode 17:53 18:01 Feeder tripped Arecode - Kanhirode 2ARKH Dist. Prot. Z2 A ,B phase, Main1 Main2 186 A & 186 B

68 211Feeder charged at 18:01hrs

07.11.2013 Kuttiady 17:54 18:08 Generator #3 tripped Unit#3 Special protection 20 Syncronised

07.11.2013 Kuttiady 17:54 18:26Feeder tripped at Kuttiady End Kakkayam- Kuttiady 1 KKKU Distance Protection Z2, A B 38 109 Feeder Charged

Other relevant

system data.

Pre-Fault condition Remarks and Further

informations if any.

Remedial Measures taken.

Grid Elements Involved(Furnish Each element separately)

Interruption as per

chronological sequence

FIRST INFORMATION REPORT OF GRID INCIDENT / GRID DISTURBANCE(To be submitted with minimum possible time)-Maximum time 24 hrs.

SLDC Kerala/GI-GD/2013-14/ Dated: 08.11.2013

Date Location

/Area Event Description

Details of Relay indications and Flags

Rajan1

ANNEXURE VIII (1/18)

Rajan1

ANNEXURE VIII (2/18)

Rajan1

ANNEXURE VIII (3/18)

Rajan1

ANNEXURE VIII (4/18)

Rajan1

ANNEXURE VIII (5/18)

Rajan1

ANNEXURE VIII (6/18)

Rajan1

ANNEXURE VIII (7/18)

Rajan1

ANNEXURE VIII (8/18)

Rajan1

ANNEXURE VIII (9/18)

Rajan1

ANNEXURE VIII (10/18)

Rajan1

ANNEXURE VIII (11/18)

Rajan1

ANNEXURE VIII (12/18)

Rajan1

ANNEXURE VIII (13/18)

Rajan1

ANNEXURE VIII (14/18)

Rajan1

ANNEXURE VIII (15/18)

Rajan1

ANNEXURE VIII (16/18)

Rajan1

ANNEXURE VIII (17/18)

Rajan1

ANNEXURE VIII (18/18)

11/27/2013

1

Details State Loads expected DTPC

availability

Action

1 Identification of loads

for Kudankulam SPS

A.P Gooty, Chitoor,

Chinakampalli, Anatapur,

Kalikeri

Gooty,

Chinakampalli,

Anantapur

Respective STU

to identify

loads.

Karnataka Doddaballapur, bangalore,

Mysore

Somanhalli,

Neelmangla

T.N Hosur, Salem, Erode,

Udumalpet, Madurai, Trichy

Sriperambadur,

Salem, madurai,

Thiruvarr, Trichy,

Ingur

Kerala Thrichur, Palakkad Thrissur,

Kozhikode,

Pallam, edapon

Communication link

from Kolar to new

loads

Communication link to respective load centers

from kolar. Installation of Protection couplers.

POWERGRID/

STU

2 Trip signal-3 of SPS for

HVDC Talcher-Kolar

Trip signal-3 to be concatenated with Trip signal-

1 & 2

POWERGRID

3 Communication link

from Raichur to Kolar

Communication link from Raichur/sholapur to

kolar. Signal to be integrated with trip signal – 3

of SPS for Talcher-Kolar

POWERGRID

SPS Work details Action Expected

completion

date

4 SPS for Contingency

of 400kV Raipur-

Wardha lines

Communication link from Raipur to kolar.

Signal to activate tripping of loads

identified for Kudankulam SPS

POWERGRID

5 SPS for Contingency

of 400kV Parli-

Wardha lines

Communication link from Wardha to

kolar. Signal to activate tripping of loads

identified for Kudankulam SPS

POWERGRID

6 SPS for Contingency

of 400kV Parli-

sholapur lines

Communication link from sholapur to

kolar. Signal to activate tripping of loads

identified for Sholapur SPS

POWERGRID

1) States to identify loads

2) DTPC Wiring works upto STU point

3) DTPC wiring by STU upto breaker

4) Mock test for SPS

Power System Operation

Corporation Ltd.

(A wholly owned s ubs idiary of Power Grid Corporation of

India Ltd.)

POSOCO Southern Regional Load Despatch Center

TRIPPING MONITORING SYSTEM

Month: OCT Year : 2013 Get Tripping

Tripping Details for Month of OCT 2013

S.NOELEMENT

NAMETRIPPING

DATETRIPPING

TIMEFIR(S)

DR(S)

EL(S)

FIR(R)

DR(R)

EL(R)

DETAILS

1400 Kv METTUR -

ARASUR-131-Oct-2013 03:29:00

2400 kV HYDERAB AD

- KU RNOOL29-Oct-2013 02:58:00

3400 kV VIJAYAWADA

- GAZUWAKA 127-Oct-2013 02:48:00

4400 kV TALAG U P P A

- HASSAN26-Oct-2013 23:05:00

5400 kV KAIGA -

GUTTUR 226-Oct-2013 05:30:00

6400/220 kV ICT-1

AT G AJ WEL26-Oct-2013 03:52:00

7400 kV

RAMAGUNDAM -HYDERABAD 4

26-Oct-2013 01:50:00

8400 kV MALKARAM -

HYDERAB AD26-Oct-2013 00:41:00

9400 kV KHAMMAM -

MAMIDIPALLY 225-Oct-2013 23:42:00

10400 kV KHAMMAM -

KALP AKKA 225-Oct-2013 23:39:00

11400/132 kV ICT-1

AT RSTPS25-Oct-2013 23:30:00

12400/132 kV ICT-2

AT RSTP S25-Oct-2013 23:30:00

13400 kV HYDERABAD

- KURNOOL25-Oct-2013 22:31:00

14400 kV KHAMMAM -

KTP S 125-Oct-2013 21:55:00

15400 kV KHAMMAM -

KTPS 225-Oct-2013 21:55:00

16400 Kv VTP S -MALKARAM 1

25-Oct-2013 19:41:00

17400/220 kV ICT-2

AT VEMAGIRI25-Oct-2013 17:05:00

18220 kV KAIG A -

KODASALLY25-Oct-2013 13:21:00

19400/220 kV ICT-1AT VIJAYAWADA

25-Oct-2013 10:32:00

20 400/220 kV ICT-2AT VIJ AYAWADA

25-Oct-2013 10:32:00

21400 kV HYDERABAD

- KURNOOL24-Oct-2013 19:42:00

22400/220 kV ICT-2

AT KALP AKA23-Oct-2013 20:22:00

23400 Kv NELLORE -

SPDR23-Oct-2013 02:34:00

24400 Kv

KRISHNAP ATNAM -NELLORE 1

23-Oct-2013 01:13:00

25 400 Kv NPS - SEPL 23-Oct-2013 01:11:00

26400 Kv G OOTY -

NP S 223-Oct-2013 01:11:00

27400 kV VIJAYAWADA

- NELLORE 123-Oct-2013 01:11:00

28400 Kv NELLORE -

SP DR23-Oct-2013 01:11:00

29400 kV NELLORE -

ALAMATHI23-Oct-2013 01:11:00

30400 kV G U TTU R -

NARENDRA 122-Oct-2013 23:55:00

31400 kV KAIGA -

GUTTUR 222-Oct-2013 17:14:00

32400 Kv HASSAN -

U P CL 222-Oct-2013 14:57:00

33220 kV AMBEWADI -

PONDA 222-Oct-2013 12:34:00

34400 kV VIJ AYAWADA

- VEMAG IRI 122-Oct-2013 02:59:00

35400 kV

RAMAGUNDAM -HYDERABAD 4

22-Oct-2013 02:58:00

36400 kV VEMAG IRI -G OU THAMI CCCP 1

22-Oct-2013 02:29:00

37400 kV MYSORE -

HASAN 221-Oct-2013 23:58:00

38400 kV NELLORE -

ALAMATHI21-Oct-2013 02:59:00

39400 kV

TIRUNELVELI -KUDAMKULAM 4

21-Oct-2013 02:58:00

40400 Kv KOLAR -

SP DR20-Oct-2013 23:03:00

41400 kV MYSORE -

HASAN 220-Oct-2013 22:51:00

42400 Kv G AJ WEL -

B HOOP ALAP ALLY 120-Oct-2013 02:45:00

43400 kV WARANGAL -

BOOPALPPALLI 220-Oct-2013 02:45:00

44400 kV MYSORE -

HASAN 219-Oct-2013 23:52:00

45400 Kv GOOTY -

NPS 219-Oct-2013 16:03:00

46220 kV SEDAM -

TANDU R17-Oct-2013 13:01:00

47400 kV HYDERABAD

- N'SAGAR17-Oct-2013 12:32:00

48 400 kV KAIG A -G U TTU R 2

17-Oct-2013 03:49:00

49400 kV MYSORE -

HASAN 217-Oct-2013 03:33:00

50400 kV MADU RAI -

P U G ALU R 116-Oct-2013 21:04:00

51400 kV MADURAI -

TIRUNELVELI16-Oct-2013 21:04:00

52220 kV KANIAMP ET -

KADAKOLA16-Oct-2013 12:48:00

53400 kV KAIGA -

GUTTUR 216-Oct-2013 11:37:00

54220 kV AMB EWADI -

P ONDA 216-Oct-2013 11:34:00

55400 Kv KLVDPT -

VALLUR 113-Oct-2013 19:03:00

56HVDC TALCHER -KOLAR P OLE 1 AT

TALCHER13-Oct-2013 01:19:00

57HVDC TALCHER -KOLAR POLE 1 AT

TALCHER13-Oct-2013 00:42:00

58HVDC TALCHER -KOLAR P OLE 2 AT

TALCHER12-Oct-2013 23:59:00

59400 kV MYSORE -

HASAN 212-Oct-2013 23:59:00

60220 kV EDAMON -

EDAP P ON11-Oct-2013 12:57:00

61400 Kv NCTPS -

VALLUR 210-Oct-2013 16:05:00

62400/220 kV ICT-1

AT CHITTOOR09-Oct-2013 13:48:00

63400/220 kV ICT-1

AT CUDDAPAH09-Oct-2013 12:00:00

64400/220 kV ICT-2

AT CHITTOOR09-Oct-2013 10:36:00

65400 kV KURNOOL -

SRISAILAM08-Oct-2013 15:53:00

66400 kV SRISAILAM-

MAMIDIP ALLI 208-Oct-2013 15:51:00

67400 Kv TRICHUR -

KOCHI 108-Oct-2013 13:31:00

68400/220 kV ICT-2

AT CHITTOOR08-Oct-2013 12:09:00

69400 kV KAIGA -

GUTTUR 108-Oct-2013 10:19:00

70400/220 kV ICT-1

AT N'SAG AR07-Oct-2013 23:57:00

71400 kV KALPAKKA -

VEMAGIRI 107-Oct-2013 17:57:00

72400 kV VTP S IV -

SRISAILAM 207-Oct-2013 17:57:00

73400 kV VIJAYAWADA

- VEMAGIRI 107-Oct-2013 14:55:00

74400 kV VIJ AYAWADA

- VEMAG IRI 107-Oct-2013 14:03:00

75400 kV KALPAKKA -

VEMAGIRI 107-Oct-2013 14:03:00

76 400 kV KAIG A -G U TTU R 1

07-Oct-2013 12:47:00

77400/220 kV ICT-2

AT GOOTY06-Oct-2013 12:56:00

78400/220 kV ICT-2

AT CHITTOOR06-Oct-2013 12:25:00

79220 kV KANIAMPET -

KADAKOLA06-Oct-2013 11:52:00

80400 kV TALAG U P P A

- HASSAN05-Oct-2013 22:50:00

81VIJAYAWADA TPS-

UNIT 204-Oct-2013 14:56:00

82VIJ AYAWADA TP S-

U NIT 304-Oct-2013 14:56:00

83VIJAYAWADA TPS-

UNIT 404-Oct-2013 14:56:00

84VIJ AYAWADA TP S-

U NIT 504-Oct-2013 14:56:00

85VIJAYAWADA TPS-

UNIT 604-Oct-2013 14:56:00

86400 kV MAHAB OOBNAG AR - RAICHU R

04-Oct-2013 10:25:00

87400 Kv GAJWEL -

BHOOPALAPALLY 203-Oct-2013 16:13:00

88400 kV VEMAG IRI -G OU THAMI CCCP 2

03-Oct-2013 15:18:00

89400/230 Kv ICT-1

ATSUNGUVARCHATRAM

03-Oct-2013 15:02:00

90220 kV AMB EWADI -

P ONDA 203-Oct-2013 12:45:00

91400 kV VIJAYAWADA

- VTPS IV 203-Oct-2013 06:49:00

92G OOTY-

SOMANAHALLI ATG OOTY

03-Oct-2013 03:43:00

93400 kV NEYVELI TS

2- PONDICHERY02-Oct-2013 23:48:00

94400 Kv

P ONDICHERY -SP CHATRAM

02-Oct-2013 23:48:00

95220 kV AMBEWADI -

PONDA 202-Oct-2013 14:37:00

96220 kV

G U MMU DIP U NDI -SU LLU RP ET

02-Oct-2013 14:00:00

97HVDC BHADRAVATHI

POLE 101-Oct-2013 16:28:00

98HVDC B HADRAVATHI

P OLE 201-Oct-2013 16:28:00

99400 kV

TIRUNELVELI -KUDAMKULAM 2

01-Oct-2013 03:58:00

100400 kV

TIRU NELVELI -KU DAMKU LAM 2

01-Oct-2013 02:57:00

: File Avilable andReceived Within 24 Hrs.

: File Avilable andReceived after 24 Hrs.

: File NotAvilable.

Power System Operation

Corporation Ltd.

(A wholly owned s ubs idiary of Power Grid Corporation of

India Ltd.)

POSOCO Southern Regional Load Despatch Center

TRIPPING MONITORING SYSTEM

Month: NOV Year : 2013 Get Tripping

Trip p ing Details for Month of NOV 2013

S.NOELEMENT

NAMETRIPPING

DATETRIPPING

TIMEFIR(S)

DR(S)

EL(S)

FIR(R)

DR(R)

EL(R)

DETAILS

1400/220 kV

ICT-1 ATNEELAMANG ALA

18-Nov-2013 01:18:00

2400/220 kV

ICT-1 ATNEELAMANG ALA

12-Nov-2013 23:30:00

3220 kV KAIG A -

KODASALLY11-Nov-2013 13:20:00

4400 Kv KLVDP T

- VALLU R 111-Nov-2013 01:51:00

5400 kV

RAMAG U NDAM -N'SAG AR 2

10-Nov-2013 07:21:00

6HVDC

B HADRAVATHIP OLE 1

09-Nov-2013 14:50:00

7400 Kv

U DU MALP ET -P ALLAKAD 1

07-Nov-2013 17:30:00

8400 Kv HASSAN

- U P CL 205-Nov-2013 10:48:00

9220 kV IDU KKI- U DU MALP ET

04-Nov-2013 10:52:00

10400 kV KAIG A -

G U TTU R 104-Nov-2013 10:32:00

11220 kV IDU KKI- U DU MALP ET

03-Nov-2013 18:17:00

12400 kV KAIG A -

G U TTU R 103-Nov-2013 13:47:00

13220 kV G OOTY -

ALIP U R LINE03-Nov-2013 12:44:00

14220 kV

KAYAMKU LAM -NEW P ALLAM 2

02-Nov-2013 16:00:00

15220 kV IDU KKI- U DU MALP ET

02-Nov-2013 13:15:00

: File Avilable andReceived Within 24 Hrs.

: File Avilable andReceived after 24 Hrs.

: File NotAvilable.

(S): SENDER END (R): RECEIVER END

1. Under Voltage Relays (UVR) for SR

SRLDC had identified for the provision of under voltage relays in the following

locations in the Southern Region:

Karnataka (Bangalore & Mysore areas)

Andhra Pradesh (Chittur area)

Tamilnadu (Chennai area)

Kerala

1. A Station 2. Antharsanahally 3. Bastipur 4. Bidadi 5. D.B.Pura 6. Dobspet 7. EDC compound 8. HAL 9. Hebbal 10. Hoody 11. Hootagalli 12. HSR layout 13. Kadakola 14. Kunigal 15. Naganathpura 16. Nelamangala 17. Peenya 18. Somanahalli 19. Subramnyapura 20. Tubinakere 21. Whitefield

1. Chittoor 2. Kalkiri 3. Kodur 4. Palamaneru 5. Rajampet 6. Renigunta

1. Almatti 2. Gummidipoondi 3. Kadaperi 4. Kilpauk 5. KITS Park 6. Koratur 7. Koyambedu 8. Mamambankam 9. Manali 10. Mylapore 11. Oragadam 12. S.P.Koil 13. Siruseri 14. Sriperumbudur 15. Taramani 16. Thondiarpet

1. Areakode 2. Edappon 3. Kalamassery 4. Kaniyampet 5. Kanjirode 6. Kasarkode 7. Kundara 8. Madakkathara 9. Malapparamba 10. Palakkad 11. Phothenkode 12. Shornur 13. Talaparamba 14. Vadakara

• Constituents were requested to install the UVR in a phased manner in the above specified nodes.

• Progress in this regard may be reported to the PCSC forum in the 27th meeting of PCSC.

Rajan1

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