SOUTHERN REGIONAL POWER COMMITTEE of...SOUTHERN REGIONAL POWER COMMITTEE BANGALORE Agenda for the 30th Meeting of Protection Coordination Sub-Committee of SRPC to be held on 20.03.2014

SOUTHERN REGIONAL POWER COMMITTEE BANGALORE

Agenda for the 30th Meeting of Protection Coordination Sub-Committee

of SRPC to be held on 20.03.2014 (Thursday)

1. Confirmation of the Minutes of the 29th Protection Coordination Sub-Committee meeting held on 20th February, 2014

2. Compliance Measures with regard to orders of Hon’ble CERC

The following are some of the compliance measures needed to be

implemented given for ready reference:

S.NO

Petition No. Order/ROP Date

Order Description Report to

Periodicity

1 Petition No. 146/MP/2013 with I.A. 36/2013

O: 20.02.2014

Accordingly, we direct the respondents to implement the works as mentioned in Phase-I and Phase-II by 1.5.2014 and 1.9.2014 respectively. SRPC is directed to coordinate the protection setting issue and submit a report regarding implementation of Phase-I activities by 1.6.2014. SRPC is further directed to submit bimonthly status report for works mentioned in Phase-II to the Commission.

CERC Phase I : by 01.06.2014 Phase II : Bimonthly status report

Petition No. 146/MP/2013 with I.A. 36/2013

O : 20.02.2014

We also direct the petitioner and SRPC to coordinate and monitor the progress and compliance of Commission's instances of non-compliance to the Commission's directions and ensure compliance of Regulations 5.2 (r) of the Grid Code and report instances of non-compliance to the Commission.

CERC As and when non-compliance occurs. Could be done on monthly basis.


O : 20.02.2014

We direct the respondents to strictly comply with the provisions of Regulation 5.2(e) of the Grid Code and CEA Grid Standards. The petitioner is directed to monitor the progress and compliance of the Commission's directions and ensure compliance of provision of regulations.

CERC As and when action plan for revival to be finalized.

Agenda for the 30th Protection Coordination Sub Committee Meeting to be held on 20.03.2014 Page 2

In case of non-compliance for action plan finalized by RPC, the petitioner is at liberty to approach the Commission with specific instances of non-compliance against defaulting entities for necessary directions in accordance with law.


O : 20.02.2014

On this issue, we direct all RPCs to formulate patrolling protocol/guidelines by 1.6.2014. The protocol must also take into account the terrain, forest cover and reach in that area and ensure regular monitoring as per requirement in that area to ensure efficient operation.

SR Constituents

01.06.2014

2 Petition No. 167/Suo-Motu/2012

O : 22.02.2014

RPCs shall ensure that the approved philosophy is adopted by all users.

SR Constituents

As and when

Petition No. 167/Suo-Motu/2012

O : 22.02.2014

We direct ISTS licensees to submit details of updated distance protection relay setting of all inter-regional lines with POSOCO & RPCs.

PGCIL & ISTS Licensee

To be collected

Petition No. 167/Suo-Motu/2012

O : 22.02.2014

The Commission directs all SLDCs to install/activate sound recording system in their control rooms within three months from the date of issue of this order.

SLDCs To be followed

3 Petition No. 263/MP/2012

O : 19.12.2013

All SR constituents are directed to identify the additional feeders and install UFR, df/dt relays to ensure the relief as decided by SRPC from time to time. We direct all constituents to submit compliance report duly certified by SRLDC and SRPC of implementation of quantum of relief by AUFR as per table above and proper functioning of df/dt relays within one month of issuing this order.

Certified copy sent to SR constituents

Further for monitoring of operation and relief by these UFR and df/dt relays SLDCs are directed to map these relays on the SCADA system within three months of issuance of this order. SRPC/SRLDC shall submit a compliance report in this regard within four months of issuing this order.

CERC Before 19.04.2014


We direct SRLDC and SRPC to coordinate and monitor the progress and compliance of Commission's directions and ensure compliance of Regulations 5.2 (n) and 5.4.2 (e) of the Grid Code and report instances of non-compliance.

CERC Non-compliance could be sent on monthly basis.

3. Details of Grid Disturbances & Major Grid Incidences

The Details of Grid Disturbance and Grid Incidence as submitted by SRLDC is enclosed as Annexure I.

It is requested that the constituents may send the Report / Analysis of the Grid disturbance/ Major Incidence within 24 hours of the occurrence to SRLDC and SRPC Secretariat.

4. Grid Occurrences in the Southern Region

It is requested that detailed Report of the Grid occurrence may please be

Uploaded in the SRLDC website within the time schedule as stipulated in

IEGC.

5. CERC Order dated 19.12.13 in respect of Petition No.

263/MP/2012.

APTRANSCO, KPTCL, KSEB, Puducherry and TANTRANSCO are requested

to send the status of implementation/ action taken for implementing the

Hon'ble CERC order dated 19.12.2013 in respect of Petition

No.263/MP/2012.

6. CERC Order dated 20.02.14 in respect of Petition No

146/MP/2013 with I.A. 36/2013

Hon’ble Central Electricity Regulatory Commission in Petition No

146/MP/2013 with I.A 36/2013 (Annexure II) had directed Southern Region

Constituents to implement the Protection Audit /PCC (PCSC)

Recommendations in Two Phases as per SRLDC's proposal i.e. as Phase I

and Phase II.


Phase I involves minor works such as revision of settings, replacement of

numerical relays, implementation of Bus Bar protection in critical 220 KV and

above substations. Phase II involves activities such as replacement of old

breakers etc which may require some time.

CERC had directed the SR constituents mentioned in the order to implement

the works as mentioned in Phase I and Phase II by 01.05.2014 and

01.09.2014 respectively. Commission had also directed SRPC to coordinate

the protection settings issue and submit a report regarding implementation of

Phase I activities by 01.06.2014.

Utilities may please inform status of implementation of Phase I measures.

Further, as directed by the Commission, constituents are requested to submit

the bi monthly status of report works mentioned in Phase II to SRPC.

Action: APTRANSCO, APGENCO, KPTCL, KPCL, KSEB, TANTRANSCO,

PGCIL, NTPC

7. SRLDC Agenda: Non Submission of Tripping Reports a) SRLDC vide Lr. no. SRLDC/OS/2014 dt 04.03.2014 submitted the

following (Annexure III ).

Non furnishing of Tripping details including Disturbance

Recorder/Sequential Event logger output in compliance of Regulations

5.2 (r) of IEGC –intimation to SRPC as per the provisions under clause

1.5 of IEGC 2010.

b) Other Agenda items as submitted by SRLDC vide mail dt 10.03.2014 is

enclosed herewith as (Annexure IV ).

8. Status of Pending Protection issues

Status of the following pending protection issues may be informed to the PCSC forum latest by 17.03.2014.

a. Status of Recommendations of the 27th PCSC

With respect to Grid Disturbance that had occurred at Kothagudam TPS and Khammam S/S on 25.09.2013.


SN

Recommendation The meeting in which the issue was Discussed

Anticipated date of completion

Agency Status Remarks

1 a. APGENCO to consider usage of relays of different make for Main –I and Main II distance protection for KPTS- Managuru line-2. Relevant APTRANSCO c.APTRANSCO to review distance protection settings of KPTS- Managuru line-2 as it tripped for fault in KPTS- Managuru line-1. d.APGENCO to review reverse distance protection settings of KPTS- Shapurnagar Line. e. APGENCO to enable DEF Back Up protection in all lines emanating from KTPS. f. APGENCO to enable IDMT characteristics for GTs and ICTs at KTPS which is to be coordinated with primary protection. g. APGENCO to review the Overload settings of Unit 4 h .DR at Khammam Substation to be time synchronized with GPS i. APGENCO to review bus bar protection settings.

27th PCSC

Yet To be reported

APTRANSCO/APGENCO

Pending APGENCO informed that the recommendations would be complied by end of June 2014 . APGENCO to send the status of implementation

b. Recommendations to be complied by November 2013

SN




1 DTOC settings for ICTs to be removed and IDMT settings to be adopted.

21st PCSC (25.06.2013)

Nov-13 SRTS I, PGCIL

- SRTS I, PGCIL yet to report to the PCSC forum.


c. Recommendation to be complied by December 2013

SN




1 NPCIL,KPCL and KPTCL in coordination to review the protection settings at Kaiga Corridor

24th PCSC (26.09.2013 )

Dec-13 NPCIL, KPCL

NPCIL, Pending

Kaiga, NPCIL is requested to review the settings at their end at the earliest and the same may be communicated.

d. Recommendations to be complied by February- 2014

SN




1 BUSBAR PROTECTION AT KAYATAR 110KV SUBSTATION

21st PCSC held on 25.06.2013

Feb-14 TANTRANSCO

Pending TANTRANSCO informed that the protection issue would be sorted within the agreed time.

2 PROVIDING DR AND EL-MAMIDAPALY

23rd PCSC held on 27.08.2013

Feb-14 APTRANSCO

Pending APTRANSCO informed that the recommendation is included in the Phase I of implementation.

e. Recommendations to be complied by March 2014

SN Recommendation The meeting in which the issue was Discussed



1 Bus Bar protection Scheme at Ragalapadu Substation

26th PCSC (21.11.2013)

Mar-14 APTRANSCO

pending APTRANSCO informed that the recommendation is included in the Phase I of implementation.

f. Recommendations to be complied by May - 2014




1 48 V DC SUPPLY REDUNDANCY NOT AVAILABLE-EDAMON

17th PCSC (26.02.2013 )

May-14 KSEB Pending KSEB informed that the protection issue would be sorted within the agreed time.


2 EARTH PITS at EDAMON

17th PCSC (26.02.2013 )

May-14 KSEB Pending KSEB informed that the protection issue would be sorted within the agreed time.

3 Main2 distance protection for EMPC#1 feeder not available - Edamon

17th PCSC (26.02.2013 )

May-14 KSEB - "

4 DG set at Edamon 17th PCSC (26.02.2013 )

May-14 KSEB Pending KSEB informed that the protection issue would be completed by May-2014.

g. Recommendation to be complied by June - 2014

SN




1 The Main I and Main II Protection of Different make-Sharavathy


June-14 KPCL Pending Relays for M1 & M2 protection to be of different make: NIT has been issued and would be processed.

h. Recommendations to be complied by Aug 2014




1 Synchronizing Facility at Hubli.

17th PCSC (26.02.2013 )

Aug-14 KPTCL Pending KPTCL informed that the protection issue would be sorted within the agreed time.

i. Recommendations to be complied by Sep - 2014

SN Recommendation The

meeting in which the issue was Discussed



1 Replacement of OLD CBs at Sharavathy


Sep-14 KPCL Pending NIT has been issued and would be processed.


2 COMPLIANACE OF 3RD PARTY AUDIT REPORT-Sharavathy

17th PCSC -25th PCSC (26.02.2013 to 22.10.2013)

Sep-14 KPCL Pending NIT has been issued and it would be processed

j. Recommendations to be complied by Nov 2014

SN



Agency

Status Remarks

1 •As the Plant was more than 25 years old, all yard equipment need to be replaced. •Modification of Bus Scheme to be carried out. •The PCSC forum recommended for the modification of Bus Bar protection scheme at Idukki Substation. In the event of bus fault the entire substation should not be affected. This would improve the reliability and security of the Idukki Hydro Generating station.

26th

PCSC

Nov-14 KSEB Pending KSEB informed that the protection issues

would be addressed by Nov 2014.

k. Recommendation to be complied by Dec 2014

SN



Agency

Status Remarks

1 ONLY ONE BUS IS AVAILABLE, TRANSFER BUS SHALL BE PROVIDED -EDAMON

17th PCSC (26.02.2013 )

Dec-14 KSEB Pending KSEB informed that the protection issue would be sorted within the agreed time.

9. Remedial measures taken for critical tripping events The respective constituents are requested to send the remedial measures

taken by them for the tripping events enclosed in the Annexure – V through

email latest by 12.03.2014.


10. SPS for Kudankulam Nuclear Power Station SRLDC had brought to the notice of the PCSC forum that there had been re-orientation recently in respect of 400 KV lines emanating from Kudankulam. Three 400kV lines were now from Kudankulam to Thirunelveli while remaining one line is from Kudankulam to Madurai. Hence the following logic was proposed for SPS at Kudankulam on account of the change in the configuration:

Contingency Action

Tripping of all three lines from Kudankulam to Thirunelveli and two units in running condition at Kudankulam.

One unit at Kudankulam to go on house load and the second unit generation would be evacuated through 400kV Kudankulam-Madurai line.

29th PCSC Deliberations

• Representative from KKNPP,NPCIL informed the forum that they were planning to manually ramp down the generation from 1000 MW to 700 MW with in 1 hour to 11/2 hour duration.

• SRLDC insisted for ramping down of unit within a time frame of 15 minutes (to save the units else the line would be tripped on overload and units has to come on house load).

Recommendations

Ø PCSC forum had recommended KKNPP, NPCIL to implement the proposed SPS for saving the units with a ramp rate as proposed by SRLDC/CTU at the earliest.

11. Status of implementation: SPS in Southern Region

SN

Name of the Scheme

Details of the scheme Implementing Agency

Status Remarks

1 Additional Logic for 765 KV Sholapur Raichur Line

Operation of Over current

protection (800 A or 1000

MW for 10 sec) in 765kV

Sholapur-Raichur line (Import

by SR) and

frequency <50.1 Hz

SRTS I,PGCIL

Pending

The PCSC forum recommended for early implementation of additional Logic for the SPS for 765 KV Sholapur Raichur Line.

2 Modification in NTPC Talcher SPS

NLDC has proposed for modification in the SPS for secure operation of Grid after synchronization of SR with NEW Grid.

NTPC/CTU in consultation with NLDC and SRLDC

- -


12. Status of implementation: SPS in Karnataka

SN

Name of the Scheme

Details of the scheme Implementing Agency

Status Remarks

1 Somanahally& Bangalore water supply

a) To trip all 220kV lines & 220 / 66kV trfs except 220 kV Harohalli & Tataguni lines at Somanahally and to trip Vrishabhavathi line at Tataguni when ICTs at Somanahally trip. b) To trip 220 kV Vajamangala and Madhuvanahally-1 & 2 lines at TK Hally when ICTs at Mysore trip.

KPTCL

KPTCL informed that the SPS is delayed due to ongoing R&M works at 220 KV Somanahalli SS.

KPTCL to submit the SPS Logic to the SRPC Secretariat.

2 (i) SPS for Tripping of one of 400 KV Hiriyur Nelamangala D/C Line and flow on other line >850 MW (ii) SPS for tripping one of 400 KV Gooty Nelamangala S/C Line or 400 KV Gooty Somanahalli S/C Line and flow on the other line > 850 MW.

In SR signal will be sent from Hiriyur to trigger 765 KV Raichur Sholapur SPS.500 MW of additional loads in Southern Region to be identified which is separate from the loads identified for HVDC Kolar SPS and Kudankulam SPS.

KPTCL/ PGCIL

(i) KPTCL informed that action would be taken for identification of separate loads for the proposed SPS based on the recommendations of PCSC forum.

-

13. Protection Logic checking of Critical Substations Logic checking of following Critical Substations in the Southern Region had been approved in the SRPC meeting held on 18.05.2013 at Bangalore.

(i) 400 kV Guttur (vi) 400 kV Kurnool

(ii) 400 kV Ramagundam (vii) 400 kV Almatti

(iii) 400 kV Kalpaka (viii) 220 kV Edamon

(iv) 400 kV Nelamangala (ix) 400 kV VTS

(v) 400 kV Hoody (x) 400 kV Vemagiri


14. TANTRANSCO Agenda TANTRANSCO vide Lr No CE/P&C/SE/D/EPC IV/AEE 3/F.SRPC/D.18/14 dt 05.03.2014 has submitted the following Agenda.

15. Implementation of recommendations of Enquiry Committee (NEW grid disturbance on 30th & 31st July, 2012)

(a) Healthiness of Batteries

Healthiness of Batteries Installed at 220 KV and above voltage level Substations (to provide Backup supply to the Relays, RTUs and Communication Equipments) may be updated on monthly basis since the same has to be communicated to CEA/MOP.

• The constituents were requested to submit the healthiness of batteries on monthly basis (i.e. on 7th day of the month).

• The following constituents are requested to send the report regularly

APGENCO,KPCL, KPTCL, SRTSI (PGCIL) , NPCIL(MAPS& KKNPP), Puducherry, JSWEL, UPCL

• The status of submission by the constituents is enclosed herewith as Annexure – VI.

• The following constituents are requested to send the consolidated list of Batteries installed in the system (Substation wise) as a onetime report.

APGENCO, KPCL, KPTCL, NPCIL (KKNPP), Puducherry, JSWEL.


16. Submission of completed dynamic study data All SLDCs were requested to direct the embedded IPPs connected at 220 kV and above voltage level to submit completed dynamic study format to SRPC, Secretariat.

17. Informing configuration changes to PCSC forum It was agreed in the PCSC forum that if any change in the system configuration ( i.e. addition of Generating Units, Capacitors, Reactors, LILO etc) are to be highlighted and brought to attention of PCSC forum during the PCSC Meetings . This would enable utilities to review their protection settings if any change in the adjoining utilities to have better protection coordination in the Southern Region. All the constituents are requested to send the change in the configuration in their system if any to the PCSC forum on monthly basis.

18. Sending Agenda items for the PCSC meetings

As per the Guidelines of CEA/MOP it had been decided to conduct the PCSC meetings on a monthly basis .It is requested that Agenda Items for the PCSC meetings, if any, may please be sent latest by 5th working day of the month to SRPC Secretariat to compile and circulate the same so as to have fruitful discussions in the PCSC meetings.

19. Date & Venue of the next Meeting The 31st PCSC meeting would be conducted on 24.04.2014 (Thursday) at SRPC Bangalore.

*******

1

SRLDC Agenda Points for 30thmeeting of Protection Sub-Committee of SRPC

1. Details of Grid Disturbances

S. No.

Details of Event Date & Time Reason Remarks

Category

1

Tripping of running units at Nagjheri power station

03-03-2014 @ 15:14 hrs

Delayed clearance of fault in Nagjheri-Hubli line-2 led to tripping of Units. Generation loss : 425 MW

GD-1

2. Details of Grid incidents:

S. No.

Details of Event Date & Time

Reason Remarks Category

1

Tripping of 400kV Srisailam-Satenapalli line-1&2

17-02-2014 @ 16:54 & 17:45 hrs

Tripped due to PLCC mal-operation. Status of D.R/ EL at Satenapalli

GI-2

2

Tripping of Udumalpet-Arasur line-2

17-02-2014 @11:57

Line tripped at udumalpet end only. It was reported that there was auto reclose lock out due to oil leak in breaker. The reason for line tripping due to A/R lock out needs further investigation.

GI-2

3 Tripping of 220kV Ambewadi-Ponda line

18-02-2014 @ 14:44 hrs

Transient fault in line. Distance relay unhealthy at ambewadi end.

GI-2

4 Tripping of 400kV Ramagundam-Chandrapur line-2

19-02-2014 @ 11:18 hrs

It was verbally reported that line tripped due to PLCC mal operation. No FIR furnished

GI-2

5 Tripping of 400kV JSW-Guttur line

20-02-2014 @ 16:03 hrs

It was verbally reported that line tripped due to PLCC mal operation. No FIR furnished

GI-2

6

Tripping of 400kV Sriperambadur-Chitoor line

21-02-2014 @ 10:26 hrs& 17:30 hrs

Line tripped due to PLCC mal-operation

GI-2

7

Tripping of 400kV Munirabad-Guttur line

23-02-2014 @19:53 hrs

Y phase to earth fault had occurred in line. Line tripped on Zone-1 from Guttur end and on carrier aided trip from Munirabad end. The reason for non-auto reclose needs further investigation

GI-2

Rajan1

ANNEXURE I(1/2)

2

8

Tripping of NCTPS-Alamathy-1 & NCTPS-S.V.Chatram-1

26-02-2014 @ 16:25

Busbar protection got operated at NCTPS. Reason for operation of bus bar protection is to be furnished. D.R/E.L of NCTPS not furnished

GI-2

9

Tripping of 400kV Kaiga-Guttur line-2

27-02-2014 @ 2:55 hrs

Direct trip was received at Kaiga and same was established with E.L data of Kaiga station. The reason for direct trip from Guttur end needs further investigation

GI-2

10 Tripping of 400kV Raichur-Raichur(PG)-1

02.03.2014 @ 6:59 hrs

Line auto reclosed from Raichur PG. However line did not reclose from Raichur end.

11

Tripping of RTPS Unit-7 & Unit-8

02.03.2014 @ 07:17 hrs

Failure of Tie CB of Unit#8. Unit#7 tripped due to bus bar protection

GI-2

12

Tripping of Raichur-Raichur(PG) line-1&2

05-03-2014 @ 3:39 hrs

400kV Raichur-Raichur(PG) line-1 auto reclosed and tripped. Line-2 tripped from Raichur end only.

GI-2

13

Tripping of 765/400kV ICT-2 at Raichur (PG)

06-03-2014 @ 2:11 hrs

ICT tripped due operation of pressure relief device

GI-2

14

Tripping of Raichur-Raichur(PG) line-1&2

06-03-2014 @ 2:42 hrs

Y-phase fault occurred in 400kV Raichur-Raichur(PG) line-1. Distance protection of line-2 over reached from raichur end and tripped at raichur.

GI-2

Rajan1

ANNEXURE I(2/2)

Rajan1

ANNEXURE III(1/4)

Rajan1

ANNEXURE III(4/4)

ANNEXURE IV

1

SRLDC Agenda Points for 30thmeeting of Protection Sub-Committee of SRPC

1. A special protection meeting of SRPC to discuss the tripping pertaining to KPCL &

KPTCL station was held on 04-02-2014.

a. KPCL & KPTCL may furnish the actions taken to the PSC forum. b. During discussion of Sharavathy tripping which had occurred at 15:21 hrs on

11-02-2014 at SRPC special Meeting with KPCL & KPTCL held on 04.03.2014, it was informed that a contactor used for taking status of field circuit breaker de-energized due to DC supply fluctuation and this led to tripping of 220KV Unit breakers. It was recommended to modify the scheme suitably in order to avoid such tripping in future. The action taken in this regard was to be furnished by KPCL before 30th PSC meeting of SRPC.

c. During operation of bus bar protection at RTPS on 11-02-2014, it was observed that 400kV Raichur-Raichur(PG) line-2 and Raichur-BTPS lines were holding from Raichur(PG) and BTPS ends respectively. When bus bar protection is actuated in a one and half breaker scheme, the Main breaker of the equipment’s connected to the faulty bus triped without outage of the equipment i.e., equipment being fed from the healthy bus through the tie breaker. Hence reason for tripping of Main and Tie breaker at RTPS for 400kV Raichur-Raichur(PG) line-2 and Raichur-BTPS needs investigation.

2. Status of SPS to be implemented :

a. For SPS for contingency of 400kV Kolar-Hosur line, Powergrid had to inform about the status of implementation of runback scheme at Kolar.

b. Status of modification of SPS logic of SPS for contingency of Hosur-Salem line c. Status of implementation of additional SPS logic for 765kv Raichur-Sholapur

line

Rajan1

(1/1)

ANNEXURE V

1

SRPC, Bangalore

Status of Remedial Measures for the Pending Critical Tripping Reports as on 10.03.2014 (Excluding O/V trips)

SN Element Name Outage date/time

Revival date/time

Reason for Outage Remedial Measure

1 220 kV KAIGA - KODASALLY 25-01-2014/ 23:55:00

26-01-2014/ 01:06:00

TRIPPED ON EARTH FAULT To-be-discussed

2 220 kV KAIGA - KADRA 1 26-01-2014/ 00:44:00

26-01-2014/ 01:03:00

TRIPPED ON BACKUP OVER CURRENT PROTECTION

To-be-discussed

3 400 Kv RTPS - BTPS 29-01-2014/ 18:12:00

29-01-2014/ 19:28:00

DISTANCE PROTECTION OPERATED To-be-discussed

4 400/230 kV ICT-2 AT SALEM 03-02-2014/ 10:42:00

HEAVY OIL LEAK IN R PHASE MAIN TANK

To-be-discussed

5 400 kV MAHABOOB NAGAR - RAICHUR 06-02-2014/ 22:33:00

TRIPPED AT RCR END DUE TO RELAY PROBLEM

To-be-discussed

6 220 kV KANIAMPET - KADAKOLA 09-02-2014/ 08:36:00

09-02-2014/ 14:29:00

DIRECTIONAL OCR OPERATED To-be-discussed

7 N'SAGAR - CUDDAPAH FSC-II 10-02-2014/ 19:28:00

10-02-2014/ 23:59:00

TRIPPED ON UNBALANCE CAPACITANCE

To-be-discussed

8 400 kV MALKARAM - HYDERABAD 14-02-2014/ 12:05:00

14-02-2014/ 12:41:00

DT RECIEVED AT MLKRM END To-be-discussed

9 400/220 kV ICT-1 AT WARANGAL 16-02-2014/ 22:13:00

REASON AWAITED To-be-discussed

10 400/110 kV ICT 1AT ALAMATHY 16-02-2014/ 19:08:00

LA BRUST To-be-discussed

Rajan1

(1/4)

ANNEXURE V

2

11 220 kV AMBEWADI - PONDA 2 18-02-2014/ 14:44:00

18-02-2014/ 14:53:00

TRIPPED DUE TO DEFR OPERATION To-be-discussed

12 400/220 kV ICT-1 AT KAIGA 18-02-2014/ 10:31:00

18-02-2014/ 13:12:00

TRIPPED ON DIFFERENTIAL PROTECTION

To-be-discussed

13 400 kV RAMAGUNDAM - CHANDRAPUR 2 19-02-2014/ 11:18:00

19-02-2014/ 11:32:00

PLCC MAL OPERATION To-be-discussed

14 400/230 kV ICT-1 AT TRICHY 19-02-2014/ 15:40:00

19-02-2014/ 15:50:00

WHILE CARRYING NTAMC WIRING WORKS

To-be-discussed

15 400 kV TRIVENDRUM - TIRUNELVELI 2 20-02-2014/ 09:56:00

20-02-2014/ 10:01:00

TRIPPED WHILE CARRYING OUT NTAMC WORKS@TVDM

To-be-discussed

16 400 kV JSW TORANAGALLU-GUTTUR 20-02-2014/ 16:03:00

20-02-2014/ 16:10:00

PLCC MALFUNCTION To-be-discussed

17 400 kV CHITTOOR - SPDR 21-02-2014/ 17:30:00

21-02-2014/ 17:40:00

CARRIER TRIP SIGNAL(D/T) RECIEVED AT CHITTOOR END

To-be-discussed

18 400 kV CHITTOOR - SPDR 21-02-2014/ 10:26:00

21-02-2014/ 10:50:00

DT RECEIVED AT AP END To-be-discussed

19 400 kV GOOTY - KURNOOL 22-02-2014/ 13:55:00

22-02-2014/ 14:11:00

TRIPPED ON R-N FAULT To-be-discussed

20 400 kV MUNIRABAD - GUTTUR 23-02-2014/ 19:53:00

23-02-2014/ 20:45:00

TRIPPED DUE TO Y-N FAULT To-be-discussed

21 400 kV RAICHUR - BTPS 24-02-2014/ 09:26:00

24-02-2014/ 09:47:00

TRIIPED DURING CHANGE OVER OF BUS

To-be-discussed

22 220 kV HOSUR - SOOLAGIRI 1 25-02-2014/ 01:15:00

25-02-2014/ 01:50:00

MAIN 1 & MAIN 2 PROTECTION OPERATED

To-be-discussed

23 400 Kv ALAMATHI - NCTPS ST2 -1 26-02-2014/ 16:25:00

BUS FAULT AT NCTPP BUS3 To-be-discussed

24 400 Kv SVCTRM - NCTPS ST2 -1 26-02-2014/ BUS FAULT AT NCTPP BUS3 To-be-discussed

ANNEXURE V

3

16:25:00 25 400/230 kV ICT-1 AT TIRUNELVELI 26-02-2014/

16:05:00 26-02-2014/ 16:12:00

DC EARTH FAULT To-be-discussed

26 400 kV KAIGA - GUTTUR 2 27-02-2014/ 02:55:00

27-02-2014/ 03:49:00

DT RECIEVED AT KAIGA END To-be-discussed

27 400/230 kV ICT-2 AT SALEM 27-02-2014/ 15:06:00

27-02-2014/ 16:40:00

TO RELEASE AIR IN THE BUCHHOLZ RELAY

To-be-discussed

28 400 kV RAMAGUNDAM - HYDERABAD 4 28-02-2014/ 10:03:00

28-02-2014/ 10:24:00

TRIPPED AT RGDM END ONLY. To-be-discussed

29 400 kV RAMAGUNDAM - HYDERABAD 4 28-02-2014/ 10:04:00

28-02-2014/ 10:23:00

TRIPPED AT RGM END To-be-discussed

30 400 Kv RAICHUR - RAICHUR PG 1 02-03-2014/ 06:59:00

02-03-2014/ 08:33:00

TRIPPED AT RAICHUR END ONLY. To-be-discussed


05-03-2014/ 05:12:00

DUE TO CT FLASH OVER IN RCHR-RCHR-I

To-be-discussed


FLASH OVER IN CT To-be-discussed


REASON AWAITED FROM KPTCL To-be-discussed

34 765/400 kV ICT-2 at RAICHUR 06-03-2014/ 02:11:00

06-03-2014/ 03:43:00

MALOPERATION OF PRD RELAY To-be-discussed

NOTE:

1. Kindly fill in the Remedial Measure taken for the Critical tripping in the ( Remedial Measure)Column and send it by return mail for having logical conclusion of the tripping incident.

Rajan1

(3/4)

ANNEXURE V

4

2. It is requested that the complete tripping report with DR and EL and other details may please be uploaded in the SRLDC website.

3. Please use Serial number of this word file while sending Remedial measures.

Rajan1

(4/4)

ANNEXURE VI

1

As on 10.03.2014 the status of Healthiness of Batteries as submitted by the constituents

S.

No

Constituent

Healthiness of Batteries Consolidate

d List of Batteries

Installed in the System

Remarks

Oct- 2013 Nov-2013

Dec-2013 Jan-2014 Feb-2014

1 APTRANSCO Reported Healthy

Reported Healthy

Reported Healthy

Reported Healthy

Reported Healthy

Reported -

2 APGENCO Yet to Report Yet to Report Partly

Submitted Partly

Submitted(for Thermal Stations)

Yet to report Yet to report APGENCO is requested to send the report on monthly basis (i.e on 7th of every month)Consolidated (For Thermal & hydro stations) .

3 KSEB Reported Healthy

Reported Healthy

Yet to Report Reported Healthy*

Yet to report Reported *Among the 76 Battery Banks 19 were reported not healthy. They were in the process of replacing them in stages.

4 KPTCL Yet to Report Yet to Report Yet to Report Yet to Report Yet to report Yet to Report KPTCL is requested to

to send the report on monthly basis (i.e on 7th of every month)

5 KPCL Yet to Report Yet to Report Yet to Report Partly

Submitted Yet to report Yet to Report KPCL

to send the report on monthly basis (i.e on 7th of every month)

6 TANTRANSCO Reported Healthy

Reported Healthy

Reported Healthy

Reported Healthy

Yet to report Reported

7 SRTS I,PGCIL Reported Healthy

Yet to Report Yet to Report Reported Healthy

Yet to report Reported

Rajan1

Rajan1

(1/3)

ANNEXURE VI

2

8 SRTS II,PGCIL Reported Healthy

Reported Healthy

Reported Healthy

Reported Healthy

Reported

9 NTPC,

Ramagundam

Reported Healthy

Reported Healthy

Reported Healthy -

- Reported

10 NTPC, Simadhri Reported Healthy

Reported Healthy

Reported Healthy

Reported Healthy

Reported Healthy

Reported

11 NTPC,

Kayankulam

Reported Healthy

Reported Healthy

Reported Healthy -

Reported

12 NLC - Reported Healthy

Yet to Report Reported Healthy

Reported Healthy

Reported -

13 MAPS,NPCIL - Reported Healthy

Yet to Report Yet to Report Reported MAPS to send the report on monthly basis (i.e on 7th of every month)

14 KAIGA,NPCIL Reported Healthy

Yet to Report Yet to Report Reported Healthy

Reported Healthy

Reported -

15 KKNPP,NPCIL Yet to Report Yet to Report Yet to Report Yet to Report Yet to

Report Yet to Report KKNPP,NPCIL Is

requested to send the consolidated List of

Batteries installed in their system( Substation wise )–

one time report.

Yet to Report

16 Puducherry Reported Healthy

Yet to Report - Yet to Report

Yet to Report Yet to Report

Yet to Report Puducherry is requested to send the report on monthly basis (i.e on 7th of every month)

17 JSWEL Yet to Report Yet to Report Yet to Report Yet to Report Yet to

Report Yet to Report JSWEL is requested

to send the report on monthly basis (i.e on 7th of

ANNEXURE VI

3

every month)

18 UPCL Yet to Report Yet to Report Yet to Report Reported

Healthy Yet to Report

Reported -

Note: Constituents are requested to send the consolidated List of Batteries available in their system as a one time report.

Rajan1

(3/3)

Documents

SOUTHERN REGIONAL POWER COMMITTEE of...SOUTHERN REGIONAL POWER COMMITTEE BANGALORE Agenda for the 30th Meeting of Protection Coordination Sub-Committee of SRPC to be held on 20.03.2014