HPSEB Power Summary (Lu) for March 10, 2010

HPSEB Power Summary (Lu) for March 10, 2010 Own Gen: 32, Baspa-II: 9, CS: 105,Imp: 26, Exp:0, Avil: 181 Demand: 200, Net Surplus/Deficit (+/-): -16 Add Your Remarks

HPSEB Power Summary of Mar 9, 2010

Own Gen: 35.38, Baspa-II: 9.30, CS i/c GOHP:113.06, Imp:26.26 Exp:0 Availability 165.77, Demand 200.00, Net Surplus/Deficit (+/-) -14.95 Add Your Remarks

Shift Groups

HPSLDC adds a new web page to its website where all the control room shift groups shall be displayed to be contacted for any kind of emergent situation. The team displayed is playing a key role for any critical decisions.

When the best come together,
the possibilities are endless

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Centralised & Transparent Shifts – eShift

In an endeavor to keep all information centralized and transparent we are glad to announce our new module eShift. It is the event logging utility for the concerned running shift. The top management will come to know the events and system integration status of all the interstate points quickly from the previlaged areas of the web site .

Each shift is comprised of some essentail activities and there may also be certain unique activities. The module eShift will play a vital role in order to relay the activities amongst consecutive shifts and simultaneously it will help the management to track the critical events.

Expected essential activities shall display normally in black and the unexecuted activities shall be highlighted with maroon color font and with yellow background.

To log in to the previlaged area to log enteries the shift incharge will be prompted for a user name and password to log into the module.

Authenticated Area

For every single shift the interface will be different as per the work expected from them.

Evening Shift

Morning Shift

Night Shift

Setting of Shifts Timings: In eShift module the shifts are set automatically by inbuilt time functions, the logics involved are based on practical implementation of control room and not as per the documented format on duty roster. From 00:00:00 Hrs. to 08:00:00 Hrs. the shift is taken as Night. And form 08:00:00 Hrs. to 14:00:00 Hrs. the shift is Morning and from 14:00:00 Hrs. to 20:00:00 Hrs. it is Evening. From 20:00:00 Hrs. to 23:59:59 Hrs. it is taken as next Night.

System Integration

All the information entered will be archived into the database

Last Screen

Note: Every time you hit save button, the information is transferred to Database thus creating multiple records. In order to avoid any redundancy of data please save the information only once at the end of your shift.

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Micro Blogging for Quick Updates

We all have witnessed in year 2009 that Twitter is an awesome tool to keep your people updated with the help of Micro Blogging. In the past year it became the most hot trend on the Web.

Not only celebreties and companies but now Govt. Organisations like NRLDC is also using it to keep their audience updated by the proceedings. As a conclusion of the meeting with Power Controller in this regard with reference to the updates from HPSLDC we are also initiating the updates of HP Grid on the said application tool.

Apart from the main pages of these Microblogs these updates can be read from the side bar of our main blog (HPSLDC Pulse). Also we are providing two links on our website for the Microblogging updates. One from HPSLDC and another from NRLDC. However the both will run smoothly if and only if you have enabled the java script execution of your web browser.

To understand more about this application tool have a look on the following video…

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Previous Demand Trends Usage for Day-Ahead Forecasting

Generally forecasting of day ahead schedules are based on the past trends of demands which we have archived in the form of hard and soft copies of data. Recently on this notion we have developed a new module in which we are picking trends of demand as a auto.

In our Auto-Generation of Day-Ahead Schedules now Actual demand will be used as a trend for the next day forecasted demand. It is done by adding a new module to pick up the previous day’s actual demand as trend for next day.

A new value can be interpolated on previous trend as estimated anticipated demand.

Form our archives we have already initiated the process of populating the last four year actual demand trends into our databases in the desired formats.

Remark: In order to provide ease to the work force deployed at shift we have started contemplating on the direction where the S/W is going to suggest you the trend to be picked up.

Experience keeps a complete school,
and learning from it is itself a faculty.

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Normalisation of Rishikesh-Khodri System – Lifting of Restrictions on Giri & Barotiwala-II

SLDC Control Room Case Study

Lifting of Restrictions & Normalisation of System thereof

From Power Controller Desk

220 KV Khodri-Majri Line was out since 13:20 Hrs of 07-01-2010, due to outage of 220KV Khodri-Rishikesh Line. Due to this, system at Giri (H.P) was as under:

1. 132 KV Paonta was being through Jalandhar System.(Load restriction of ~8MW)

2. 132 KV Kala Amb was being fed through Jalandhar System.(Load restriction of ~35MW)

3. 132/33 KV Local Transformer-I was isolated.

4. 132/33 KV Local Transformer-I was being fed through Kulhal System.( 8MW Load allowed by SLDC, Rishikesh).

Apart from this, Load restriction to the tune of 15 MW on GACL & 15 MW on Barotiwala-II was in force as same Load was already on Jalandhar System.

On dated 09.01.2010 at about 14:40 Hours, Khodri supply was restored up to Giri & initially 40-50 MW Load was allowed. Thus initially following change over were done:

1. At 14:45 Hrs. Khodri Supply was taken on 132KV Bus through 220/132KV Transformers a/w 132 KV Kulhal Supply & Kulhal Supply was disconnected, thus feeding 132/33 KV Local Transformer-II through Khodri Supply.

2. 132 KV Paonta was shifted from Jalandhar System to Khodri- 14:47 Hrs.-14:49 Hrs.

3. 132/33 KV Local Transformer-I charged 15:02 Hrs.

4. All restrictions at Paonta, Kala Amb, Local Transformers-I&II and GACL lifted at 15:00 Hrs. Restrictions on Barotiwala-II kept as it is as Giri Machine was Scheduled Zero MW w.e.f. 15:45 Hrs.

5. At about 15:15 Hrs, on contacting SLDC, Rishikesh for drawing normal Load on 220KV Khodri-Majri line, same was allowed by Rishikesh. System at Giri was again changed as follows:

a. 15:25 Hrs.-15:30 Hrs.- Paonta Shifted from Khodri to Jalandhar System.

b. 15:26 Hrs.-15:28 Hrs.- Kala Amb Shifted from Jalandhar to Khodri System.

In the mean time normal load was allowed to Barotiwala-II at 15:26 Hrs. & with this all restrictions stands lifted and complete H.P. System normalized.

Points of reference compiled by: Er. Vikas Sharma SLDC Control Room

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Rishikesh-Khodri line outages and Restrictions on Giri & Barotiwala-II

SLDC Control Room Case Study

Situation due to Giri & Barotiwala-II restrictions and Rishikesh-Khodri outages

From Power Controller Desk

On 07.01.2010 at 13:20 hrs, 220kV Khodri-Majri line tripped from Khodri end due to outage of 220kV Khodri-Rishikesh line. However, line was charged up to Giri end from Saharanpur side but no drawl of power was allowed on this line by SLDC Rishikesh. I confirmed the matter from DGM (System Operations) Uttrakhand and it was given to understand that one of the phases of 220kV Rishikesh-Khodri line is not available and they are not able to spot the fault. It was also given to understand that the people are on the job and it is expected that fault may be cleared by 19:00 hours.

Before the outrage of this line Giri Local (17 MW) and 132kV Kala-Amb (90 MW) was being fed from Khodri and Paonta was being fed from Jalandhar-Hamirpur supply. Knowing that no power supply shall be available from Khodri, drawl to the tune of 20 MW was requested from Uttrakhand on 132kV Giri Kulhal line to feed Local Giri Area. Now the Kala-Amb area remained without power supply and there was no alternate to feed Kala-Amb full load either from Jalandhar-Hamirpur power supply or from Bhaba-Panchkula supply from Hamirpur because of the system constraints. The 220kV ICTs both at Kunihar and Jalandhar are load to their full capacity.

Power supply to local Giri was fed at 13:55 hrs from Kulhal Supply and after imposing restrictions to Kala Amb 35 to 40 MW power was fed from Solan side (Jalandhar supply). At 17:05 hrs, Kala-Amb was allowed to draw 55-60 MW. At about 17:00 hours, I again took up the matter with DGM, Uttrakhand who confirmed that they are unable to spot the fault and the line shall be patrolled on 8.1.2010 gain, but it is expected that line shall come by 17:00 hours of 8.1.2010. In view of this Control Room was instructed to convey the message of restrictions on Kala-Amb (40 MW), Paonta (20 MW) and Barotiwala (30 MW) since we were having no option left.

However this under arrangement also the transformers at Hamirpur were getting overloaded and at 20.02 hours when suddenly the Malan HEP stopped the entire system collapsed and Larji HEP also got desynchronized and thereafter supply to Giri Area could be restored at 20.45 hours.

The system till report, was working as per above arrangement.

At 6.50 Hours ICT at Kunihar tripped due to O/C and E/F whereas the loading of these transformers were 87 MW each. It has invariably been observed that these transformers which are very old behave erratically at times due to increase in temperature.

Current Situation:

System is running under very critical and precarious situation. The maximum demand has touched 1105 MW on dated 7.1.2010 and our system is grossly inadequate to handle demand beyond this. Moreover our dependency on the power infrastructure of other states like Haryana and Uttarakhand for catering to about 400 to 550 MW of power of the State has put us in a pathetically miserable and helpless situation since any snag in these system lead to severe scarcity of power and to forced restrictions on Industries.

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Northern Grid Disturbance Flash Report & HP Grid Events thereof

SLDC Control Room Case Study

Impact cascading tripping of 400 kV lines due to fog

From Power Controller Desk

On dated 02.01.2010 at 03:01 Hrs, the entire Northern Grid collapsed due to outage of thirty five 400 kV lines as intimated by NRLDC. This happened due to cascading tripping of 400 kV lines due to fog. The major lines which tripped were as under:

(i) 400kV Mandola-Bareli D/C

(ii) 400kV Dadri-Malerkotla

(iii) 400kV Bhawana-Abdullpaur

(iv) 400kV Ballabgarh-Bamnauli-I

(v) 400kV Abdullapur-Jhakri

(vi) 400kV Hissar Kaithal

(vii) 400kV Panipat-Dehar-Bhiwani

(viii) 400kV Bhawana-Bamnauli D/C

(ix) 400kV Bhiwadi-Hissar

(x) 400kV Hissar-Patiala

(xi) 400kV Hissar-Khedar-Moga-Kishenpur

(xii) HVDC Rihand-Dadri Pole 1

This resulted in complete darkness in HP areas except 132kV Kala-Amb and local area of Giri where the power supply was coming from 220 kV Khodri Majri line. Steps for restoration at HP state are as under:-

1. At 03:01 Hrs. the entire Northern Grid collapsed.

2. At 03:45 Hrs. Unit-II of Giri P/H synchronized.

3. At about 04:00/04:12 Hrs., both 132 kV Giri-Solan-I & II restored from Khodri supply.

4. At about 04:12 Hrs, 220/132 kV Transformer bank no. I & II isolated from 132 kV side at Kunihar S/stn.

5. At about 04:12 Hrs. 132 kV supply restored at Solan Sub-station from Giri/Khodri side.

6. At about 04:14 Hrs, Khodri/Giri supply further extended from Solan to Kunihar.

7. At about 04:15 Hrs. 132 kV Bus-coupler closed at Kunihar and supply extended to Shimla through 132 kV Kunihar-Jutogh-I & II and local transformer at Kunihar energized. And at the same time, circuit breakers of 220 kV Kunihar-Baddi & Kunihar-Panchkula lines opened from Kunihar end.

8. At 04:22 Hrs, 220/132 kV Transformer bank no. I & II energized from 132 kV side and supply is extended up to Kotla and then Bhaba power house.

9. At about 04:15 Hrs., supply extended up to Larji Power House and Malana Power House. And at around 04:53 Hrs., Unit-III of Larji P/H synchronized.

10. At 04:50 Hrs., local area at Kangoo S/stn changed to Giri supply

11. At 04:58 Hrs., 132 kV supply restored up to Mattansidh, through Kangoo-Kunihar-Solan-Giri/Khodri.

12. At 05:00 Hrs., 132 kV Hamirpur-Anu both circuits energized at Hamirpur end. And at the same time, HP area at Kangoo opened and again restored at 05:28 Hrs.

13. At about 05:15 Hrs., supply extended upto Bassi P/H and at 05:50 Hrs supply extended upto Shanan P/H (PSEB).

14. At about 05:53 Hrs. 132 kV Hamirpur-Dehra both circuits restored.

15. At 05:53 Hrs., 132 kV supply restored upto Jassure through Dehra to back feed Bairasuil P/H (NHPC), Pong P/H (BBMB) and RSD (PSEB).

16. At 06:05 Hrs., 220/132 kV transformer bank no.I energized at Hamirpur to energize 220 kV Hamirpur-Jallandhar Ckt-I.

17. At 06:10 Hrs., Unit-II of Bhaba P/H synchronized and at the same time Unit-II of Malana P/H synchronized.

18. At 07:01 Hrs., 220 kV Kunihar-Panchkula ckt closed and at 07:02 Hrs. 220 kV Kunihar-Baddi ckt closed as per the directions of NRLDC.

19. At 07:02 Hrs., Jassure supply extended upto Bairasuil after isolating Pong & RSD feeders.

20. At 07:15/07:20 Hrs., Unit-I of Bassi P/H synchronized.

21. At 07:28 Hrs., 132/33 kV Transformer No.I shifted to Khodri supply from Solan supply.

22. At 07:32 Hrs., 132 kV Kunihar-Barotiwala-I & II restored with some load restrictions.

23. At 07:35 Hrs., Jassure supply extended upto RSD P/H.

24. At 08:00 Hrs., 220 kV Hamirpur-Jallandhar ckt-II energized and at 08:02 Hrs. 220/132 kV transformer bank no.II at Hamirpur energized.

25. At 08:04 Hrs., Jallandhar supply restored upto Kunihar and at 08:05 Hrs., 132 kV Bus coupler at Kunihar opened.

26. At 08:10 Hrs., 132 kV Giri feeders opened from Solan to disintegrate Jallandhar and Khodri supply.

27. At 08:25 Hrs, 132 kV Kunihar-Barotiwala ckt opened at 08:25 Hrs. and re-energized at 09:08 Hrs with restricted load and at the same time HP area at Kangoo S/stn isolated.

28. At 08:25 Hrs., 132 kV Bus-Coupler at Mattansidh closed.

29. At 09:05 Hrs., 220 kV Hamirpur-Jallandhar ckt-II opened due to high voltage.

30. At 09:12 Hrs., 132 kV Hamirpur-Dehra Ckt-II opened & at 09:20 Hrs., 132 kV Anu ckt-II opened at Hamirpur.

31. At 09:23 Hrs., HP area at Kangoo S/stn restored with Jallandhar supply.

32. At 09:38 Hrs., 132 kV Jassure-Kandrori feeder opened from Jassure end.

33. At 09:48 Hrs. 220/132 kV ICT at Jassure tripped due to overloading and charged at 09:56 Hrs.

34. At 10:10 Hrs., 220 kV Dehar supply restored along with ACC-I & II and at the same time, 132 kV Kandrori ckt energized from Jassure end.

35. At 10:23 Hrs., HP area at Kangoo S/stn shifted to Dehar supply again.

36. At 10:30 Hrs., supply extended upto Png P/H.

37. At 10:38 Hrs., 132 kV Hamirpur-Dehra Ckt-II closed at Hamirpur.

38. At 10:47 Hrs., 132 kV Dehar supply restored at Kanggo S/stn.

39. At 11:10 Hrs., 132 kV Giri-Solan both ckts energized.

40. At 11:28/11:30 Hrs., 132 kV Paonta shifted from Khodri Supply to Solan Supply.

41. At 11:40 Hrs., 132 kV Anu ckt-II closed at Hamirpur.

42. At 12:15 Hrs., 132 kV Bus coupler at Hamirpur opened.

Points of reference compiled by: Er. Gagan, SLDC Control Room

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Let there be light – God Said & Grid Failed…

SLDC Control Room Case Study

Twice Grid Failure Event on Jan 2nd, 2010

From Power Controller Desk

Northern Region experienced a partial grid disturbance on the night of 1st – 2nd January, 2010 at 03:01 hrs. in which power supply in Punjab, North Haryana, HP, J & K and UT Chandigarh sub-system was affected. This was followed by another partial disturbance almost on the similar lines, during the late evening hours on the same day i.e. 2nd January, 2010 at 21:54 hrs. leading to Load loss of about 9000MW & Generation Loss of about 5159 MW(as per NRLDC report.) was reported in Northern region.

After initial disturbance during morning Hours, system was normalized during evening Hours.

Subsequently in this incident which took place between 2144 to 2154 hrs on the same day, a number of 400 kV and 220 kV lines feeding Punjab/Haryana/HP/J&K/UT Chandigarh sub-system had tripped (as per NRLDC reports). The incident initiated with a combination of faults at Bamnauli/Bawana and inadequate safety net in the separated sub-system leading to its collapse.

Himachal Pradesh which is connected through various interstate Links was left with only one link i.e. 220 KV Khodri-Majri (Uttarakhand System). Following is the list of interstate lines connecting H.P. which tripped simultaneously:

1. 220 KV Panchkula-Kunihar

2. 220 KV Panchkula-Baddi-Kunihar

3. 220 KV Jalandhar-Hamirpur-I

4. 220 KV Jalandhar-Hamirpur-II

5. 220 KV Dehar-Kangoo

6. 220 KV Jassure-Pong

7. 220 KV Jassure-RSD

8. 220 KV Jassure-Bairasiul

9. 132 KV Dehar-Kangoo

10. 132 KV Hamirpur-Chohal

With this, all connected Load a/w Running Generators tripped leading to load loss of about 750 MW & Generation Loss of about 285 MW. 400KV Baspa-Jhakri-I&II evacuating power of Baspa Power House also tripped at the same instant.

Detail of running Units under control of HPSEB which tripped is as under:

Larji Power House 32 MW

Bhaba Power House 40 MW

Bassi Power House 15 MW

Giri Power House 18 MW

Baspa Power House 140 MW

Micros(Unmonitored) 35 MW

Chart illustrating Demand Wise Normal & disturbance condition

Chart illustrating loss of Generation for the State

at 22.00 Hrs. on 2nd January 2010

Strategy Adopted:

Immediately, after condition of black out was faced, next came the most challenging task for the control room operators. Lightning entire State with Single Link available & that too the one which is usually considered the weakest link of our H.P. Grid-220KV Khodri-Majri, which was feeding Industrial Area of Kala Amb through only one Line surviving in H.P. Network, 132KV Giri-Kala Amb.

On contacting SLDC, Rishikesh for making them aware of situation of virtually complete Black out in Himachal Pradesh & ascertaining uninterrupted supply through Khodri, restriction of drawl to the limit of 50MW was imposed by them, yet another problem.

While in restoration process main points to be kept in mind were that of keeping Voltages under control as high voltages hamper synchronizing of Generators & closing of Circuit Breakers, as closing of Breakers under High Voltage condition increases the re striking voltage for the breaker enhancing the chances of Trippings.

As Transmission Network was to be charged through Giri(Nahan) to near & far end areas of the state like Solan, BhabaNagar, Hamirpur, Kullu, Jassure etc, correct combination of Generation along with Load was required. Hence keeping all points in mind restoration process was initiated immediately.

Summary of Events:

21:55 Hrs. Supply Failed through all inter state points except 220KV Khodri-Majri leading to Generation loss in all running units at Bhaba, Larji, Ghanvi, Bassi along with Load loss in entire state except Kala Amb.

22:10 Hrs. Unit-II of Giri Power House synchronized with Khodri.

22:18 Hrs. 132 KV Paonta tripped from Giri.

22:20 Hrs. 132 KV Bus Coupler closed from Giri & Supply restored upto Solan after ensuring that all outgoing feeders at Solan are in Open state.

22:29 Hrs. Khodri Supply restored upto 220KV Sub station, Kunihar after ensuring that all Outgoing feeders at Kunihar are in Open State.

22:34 Hrs. Supply restored up to Bhaba Power House by closing 220KV Bhaba-I,II for synchronizing its unit. Supply extended through Kotla to synchronise Ghanvi & Andhra.Kotla allowed to draw load.

22:40 Hrs. Supply to 132 KV Shimla restored through circuit-I.

22:45 Hrs. Supply restored to 66KV Totu.

22:55 Hrs. 33 KV Bharari feeder closed at Shimla.

22:55 Hrs. 132 KV Kangoo-Kunihar S/C & 132 KV Kangoo-Kunihar D/C closed at Kunihar after ensuring that all outgoing feeders at Kangoo are in open State & Supply extended to Larji power House through 132KV Kangoo-Larji-I&II for synchronizing its units.

23:05 Hrs. Unit-II of Bhaba Power House on Bar with 40 MW Load. It was decided to feed Shimla area thereafter.

23:07 Hrs. Gumma feeder closed at Shimla.

23:07 Hrs. 132 KV Kunihar-Shimla-II restored.

23:08 Hrs. Load to Subathu & Local Kunihar restored through Kunihar.

23:12 Hrs. Shoghi & Khalini feeders closed at Shimla.

23:13 Hrs. Dhami & Ashwani Khud feeders closed at Shimla.

23:15 Hrs. 132KV Kunihar-Darla closed from Kunihar.

23:30 Hrs. 132KV Kangoo-Hamirpur-I&II were closed at Kangoo after ensuring that all outgoing feeders at Mattansidh are in open state.

23:35 Hrs. Unit-I of Larji Power House on Bar with 32MW Load.

23:35 Hrs. Supply restored to 132KV Substation Anu after ensuring that all outgoing feeders are in open state.Suppy was immediately extended to 132KV Substation, Bassi Power House for synchronizing its unit.

23:38 Hrs. After Generation was available from Larji, Loads through 132KV Substations Bajaura & Bijni were restored immediately through Kangoo/Larji.

23:40 Hrs. Load to Local Solan Town & Parwanoo restored at Solan.

23:43 Hrs. Baspa Unit Synchronised initially with 30MW load gradually icreased to 80MW on request of NRLDC.

23:45 Hrs. 132KV Bassi-Shanan feeder energized.

23:51 Hrs. As Panchkula supply was available up to Baddi & Kunihar, after clearance from NRLDC, Baddi was allowed to draw about 40MW load. However, due to restriction on Panchkula & Khodri as well it was decided not to integrate Panchkula with Khodri supply.

23:55 Hrs 132KV Barotiwala-II closed from Kunihar for station Supply.

23:55 Hrs. Load to Local Hamirpur Town restored at Anu.

23:58 Hrs. 33 KV Barsar feeder energized.

24:00 Hrs. 132KV Dehra-I&II closed at Mattansidh after ensuring all outgoing feeders at Dehra are in Open state.

00:05 Hrs. Supply restored at 220KV Jassure via 132 KV Mattansidh-Dehra Link & 220KV Bus charged. Clearance given to Load 220/33 KV Transformer & 132KV System via Dehra owing to High voltage condition.

00:05 Hrs. Unit-II of Bassi Power House synchronized with 8MW Load.

00:15 Hrs. 220 KV Pong, Bairasiul & RSD feeders opened at Jassure to control High Voltage.

00:25 Hrs. 220/132 KV Transformer Bank-I&II closed at Mattansidh & held OK.

00:25 Hrs. 220 KV Dehar Supply restored at Kangoo. With this 132KV ACC-I&II alon with H.P. Area closed.

00:26 Hrs. Clearance to GACL to draw load.

00:27 Hrs. 220 KV Jalandhar-I&II closed from Hamirpur end.

00:29 Hrs. 132 KV Dehar Supply restored at Kangoo & came in parallel operation with 220 KV Dehar Supply at Kangoo.

00:35 Hrs. All 33KV feeders viz. Tauni Devi, Sujanpur, Ladraur, Bangana, Nadaun energized at Anu.

00:40 Hrs. 220 KV Jalandhar successfully closed from Jalandhar under High Voltage Conditions. Now Jalandhar Supply came in integrated operation with Khodri Supply.

00:40 Hrs. Clearance for full load to Solan.

00:48 Hrs. With conditions slightly under control 220KV Baddi was closed from Kunihar & 220KV Panchkula closed from Kunihar, now integrating it with Jalandhar & Khodri Supply.

00:40 Hrs. 132KV Darlaghat closed from Kangoo.

All intra state Links at this point of time were intact & charged, thus making state conditions controlled. Clearance for Loads was released to all Substations after this.

01:06 Hrs. 220 KV Jassure-Pong Closed.

01:18 Hrs.With No Drawl available from Jassure & increasing load from Kunihar transformer, 132KV Bus coupler at Kunihar opened at 01:18 Hrs. thus creating two systems viz Panchkula and Jalandhar-Khodri.

02:25 Hrs. Due to no drawl from Jassure & Increasing Drawl from Khodri restrictions at Kala Amb & Local Giri to the order of 5-10 MW affected.

02:30 Hrs. Load available from Bairasiul after charging of 220KV Pong-Bairasiul circuit. Thus normal load allowed to Kala Amb & local Giri.

04:20 Hrs. 132KV Bus Coupler at Giri opened to avoid Overloading of Khodri system, thus making all supplies in radial mode.

06:25 Hrs. 132KV Hamirpur-Chohal restored.

Points of Reference Compiled by Er. Vikas Sharma

P.S:

The process & operations described here are not sufficient to describe the practical conditions & mental State of Control Room operators faced when the only priority was restoration of supply to all areas of the State.

Shift on Job – GROUP-C (NIGHT SHIFT)

Er. K.S. Sambyal, Sr. Executive Engineer

Er. Vikas Sharma, Assistant Engineer

Er. G.R. Mastana, Additional Assistant Engineer

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