Presentation to Hon. MERC on- final report on ‘ … 58 42/4_MUMBAI_Recommend(STU).pdf1....

1

Presentation to Hon. MERC

on-Implementation of Recommendations of

final report on ‘ PARTIAL GRID DISTURBANCE IN MUMBAI

SYSTEM’ Dt. 05th Aug 2011

2

Power System Scenario of Mumbai System

Bilateral Purchase on

MSETCL Network

(914 MW)

Mumbai Generation(2277 MW)

TPC -1777 MWR-Infra-500

MW

Mumbai Demand

(3191 MW)

TPCL+BEST-1566

R-Infra - 1625

Power Scenario in Mumbai Area(Peak demand) as on 2nd June 2011

3

TPC +BEST

Demand 1566

R-Infra Demand

1625

Total Demand

3191

Total Gen 2277

Short fall - 914 TPC

+BEST Demand

1640

R-Infra Demand

1702

Total Demand

3342

Total Gen 2277

Short fall 1065

TPC +BEST

Demand -1752

R-Infra Demand

1819

Total Demand

3571

Total Gen 2277

Short fall1294

TPC+BEST

Demand 2048

R-Infra Demand

2126

Total Demand

4174

Total Gen 2277

Short Fall 1897

TPC +BEST

Demand 1873

R-Infra1944

Total Demand

3817

Total Gen 2277

Short fall

1540

2nd June 11

2013-14

2011-12

2012-13

2014-15

Forecasted Power Scenario of Mumbai

(All figs in MW)

4

In addition to above load growth, identified triggering loads are expected up to 2014-15 as under

Development of commercial complex in Airport area - 80 MW

Rehabilitation slum in Airport area by HDIL - 60 MW

Development of Commercial complex in Godrej Vikroliarea and vertical load development in other area - 200 MW

Development of Kohinur city, Neelkanth gammon, Vidhyvihar containers, Bhandari Estate, Swan Mill and Sahakar Nagar in Kurla area - 125 MW

Total triggering load - 465 MW

5

Above load growth and addition due to triggering loads needs to be considered for planning Mumbai system grid for FY 2014-15.

In addition to above, presently about 230-250 MW load of MSEDCLin Kalyan, Ambarnath, Saksett and Kolsett area is fed through TPCL EHV net work, which is expected to increase to 330 MW by 2014-15.

This clearly indicates that transmission system network forMumbai needs to planned to cater about 5000 MW loads by FY 2014-15.

6

STU planning for Mumbai region upto 2014-15

7

i) Second ckt. stringing of 220 kV Borivali (MSETCL) – Borivali (TPC)

D/c line (TPC) – DEC -11 Status

ii) 220 kV Kalwa – Salsette 3rd Ckt (TPC)( April 13)

iii) LILO of 220 kV Boisar (MSETCL) – Borivali (MSETCL) at

Ghodbunder (R-Infra) – DEC-11 Status

iv) Conversion of existing 220 KV D/C corridor from Kharghar to Boisar

with Multi circuit Towers using High Ampacity twin 525 sq mm AAAC

conductor. Status

v) New 220 kV Kharghar – Borivali - Boisar D/c line with twin 525 sq mm

AAAC conductor on the above M/C towers. Status

Proposed plan to meet the Mumbai Load

8

a) 400 KV Navi Mumbai (PGCIL)-(2010-11).

i. 400 KV Navi Mumbai(PG)-Vapi D/C line.

ii. LILO of 400 KV Pune(PG)-Kalwa(MSETCL) S/C line.

iii. 220 KV Navi Mumbai (PG)-Taloja D/C line

iv. LILO of 220 KV Kandalgaon-Kharghar line.

b) 400 KV Kudus(MSETCL)-(2012-13).

i. LILO on 400 KV Tarapur - Padghe D/C line at Kudus S/S

ii. 400 KV Babhaleshwar-Kudus D/C Quad line.

iii. 220 KV D/C line to 220 KV Wada-II

iv. 220 KV D/C line to 220 KV Bhiwandi-IV (Rajlaxmi) S/S.

c) 400 KV Vikhroli(TPC)-(2013-14).

(In principle clearance from MERC on 02/06/2011)

i. 400 KV Kharghar(MSETCL)-Vikhroli S/C line.

ii. 400 KV Marve(TPC)-Vikhroli D/C line.

iii. 400 KV Navi Mumbai(PG)-Vikhroli S/C line.Continue…

9

d) 400 KV Ambernath (MSETCL)-(2014-15).

i. LILO on 400 KV Padghe - Nagothane D/C line at Ambernath S/S.

e) 400 KV Ghodbunder (R-Infra)- (2014-15).

i. 400 KV Kudus-Ghodbunder D/C line.

ii. 400 KV Boisar(PG)-Ghodbunder D/C line.

f) 400 KV Marve(TPC)-(2014-15).

i. 400 KV Marve-Vikhroli D/C line.

g) +/- 150 KV, 700 MW IGBT HVDC light (R-Infra)

Continue…

11

Proposed STU Plan

PGCIL’ s Lines

MSETCL’s Existing Lines

Newly proposed Lines

Additional strengthening Required for 3x800 MW Dehrand Project by TPCL

• 400 KV Nagothane – Marve / Dharavi (TPCL) D/C Quad Line – About 600 MW Power is expected to be pushed into Mumbai via this line during 2014-15.

12

Benefits of 400 kV Vikhroli , 400 kV

Ghodbunder S/s and

+ 150 kV, 700 MW HVDC Lights

13

SrNo Lines

Existing Network

Case I Case II Case III Case IV Case V

With 400 KV Vikhroli

With 700 MW

Nagothane– Aarey

HVDC Link

With 400 KV Ghod‐bunder

With 400 KV Vikhroliand Ghod‐bunder

With 400 KV Vikhroli, 700 MW

Nagothane –Aarey HVDC Link

and 400 KV Ghodbunder

Flow in MW

1 220 KV Kalwa – Salsette 3 circuits(D/C exist) 322 466 540 490 326 230

2 220 KV Salsette‐ BorivaliD/C (TPC)

234 390 140 62 170 46

3 220 KV Borivali (TPC) –Aarey D/C 436 296 40 302 290 18

4220 KV Borivali (MSETCL)

– Gorai S/C ( R‐Infra 11‐12)

‐ 154 123 67 72 50

5220 KV Chembur – Drive

In D/C ( R‐Infra 12‐13)

‐ 426 200 222 304 170

6220 KV Trombay

(MSETCL) – Chembur D/C( R‐Infra 11‐12)

‐ 370 332 340 298 220

Continue…

SrNo Lines

Existing Network

Case I Case II Case III Case IV Case V

With 400 KV Vikhroli

With 700 MW

Nagothane –Aarey HVDC

Link

With 400 KV Ghod‐bunder

With 400 KV Vikhroliand Ghod‐bunder

With 400 KV Vikhroli, 700 MW

Nagothane –Aarey HVDC Link

and 400 KV Ghodbunder

Flow in MW

7 220 KV Salsette – Airport S/C (TPC 12‐13) ‐ 182 190 193 187 190

8220 KV Trombay (TPC) – Saki S/C (TPC 12‐13)

‐ 180 173 170 175 173

9 220 KV Ghodbundar– Versova S/C 84 69 40 200 178 119

10220 KV Ghodbundar

– Gorai S/C ( R‐Infra 11‐12)

‐ 92 79 254 231 186

11220 KV Ghodbundar

– Dahisar D/C ( R‐Infra 12‐13)

‐ 12 30 398 346 296

12220 KV Dahisar –

Borivali (R‐Infra) D/C( R‐Infra 12‐13)

‐ 64 46 320 272 220

13220 KV Borivali (R‐Infra) – Borivali

(TPC) D/C 442 240 224 304 194 122

14 Import to Mumbai Network 894 1666

(Addl.‐772)1540

(Addl.‐646)1700

(Addl.‐806)2132

(Addl.‐1238)2300

(Addl.‐1406)

Implementation of Recommendations of final

report on Partial Grid Disturbance in Mumbai

16

Implementation of Recommendations

17

SrNo Recommendations Remarks / Present Status

6.1.1

Review of protection setting at all interconnecting point between Tata, RInfra, MSETCL and Transmission and distribution interconnection.Review of existing protection schemes.Relay configuration checks on regular intervals.

Relay setting audit was carried out on all critical lines and equipment to check the relay configuration and settings.Regular relay configuration checks will be carried out along with relay testing.

Reconfiguration of Alert and Trip mode of relays on account of overload

It is confirmed that no over load alarm stage is wired for tripping of line.

Single phase auto reclosing scheme to be implemented for all overhead lines including 220 KV lines in Mumbai.

Existing

Auto reclosing of Hybrid (O/H+U/G) lines.

TPCL to implement A/R after changing breaker mechanism from 3 phase simultaneous opening to single pole opening.

Auto reclosing of Hybrid (O/H+U/G) lines will be explored.

Effect of auto reclosing on Turbine-Generator shaft to be studied

Impact on generator shaft in case of auto reclosurefailure under study by TPCL & R-Infra

Dynamic line ratings Yet to Start . A Pilot project will be explored

Continue…


18

Sr no Recommendations Remarks / Present Status

6.1.2

Review of Mumbai Islanding scheme and UFR and df/dt load shedding settings in view of increasing demand

UFR / df/dt relays already in place. Mumbai islanding scheme review will be taken up in WRPC protection committee meet

The under frequency and over frequency settings of generators to be checked to ensure that conservative setting leading to unit tripping does not jeopardize the island

The settings adopted on units are generally in line with the national practice. OEMs recommendations have been considered while selecting UF & OF settings

Pilot project on installation of PMU for availability of synchrophaser data to Control Centers

Proposal will be put up to MERC PMU installation in various stations in Mumbai in FY 13. These PMUs will need to integrate with the proposed scheme of PGCIL for Western region for effective utilization

Continue…


19

SrNo Recommendations Remarks / Present Status

6.2.1

Shifting of R-Infra Aarey load to TPCL substations in view of high loading on 220 KV Aarey-Borivli lines.

Loading expected to go down after commissioning of proposed 220kV LILO of Borivli - Boiser line at Ghodbunder R/S.COD-Dec-2011. TPCL to inform availability of 220 KV bays at 220 KV Saki(TPCL) S/S within one week. Bays are available at 220 KV Saki(R-Infra) S/S.

In-feed lines and substation equipments at MSETCL Borivli substation should be upgraded by MSETCL to handle higher loading 220 KV Borivli-Borivli line.

220 KV Borivali(MSETCL)-Borivali(TPC) 2nd

Ckt-Dec-2011.

Enhancing/modifying existing load trimming schemes to avoid tripping of healthy line during contingencies.

Overload trimming schemes & quantum connected for trimming on critical checked for healthiness. Requirement of additional schemes based on loading of other network to be identified.

6.2.2

Up-grading of substation equipments.Study on Bus Split operation

Proposed to operate in bus split mode once line reconfiguration completed at TrombayNew equipment will be procured with higher fault level capability.

Interconnecting 220 KV TPCL Saki with R-Infra Saki

TPCL to Check availability of bays at Saki(TPC) S/S. Bays are available at Saki (R-infra) S/S.

Existing


20

Sr No Recommendations Remarks / Present Status

6.2.36.2.2

Augmentation in Mumbai generation explicitly or implicitly

400 KV network connectivity and HVDC to fill up the gap of implicit generation addition

400 KV Vikhroli (TPCL) and Ghodbunder (R-Infra to be taken up immediately

Possibility of additional interconnection/LILO of existing 220 / 400 KV lines.Bringing extra power to Mumbai by any means to cater the load growth of Mumbai

400kV connectivity with Vikhroli R/S –from Navi Mumbai (PG) S/S.

• 400kV Kharghar – Vikhroli • 400kV Boiser – Ghodbunder(R-Infra)• 400 KV Ambernath• 400 KV Marve

• Mumbai Plan


21

SrNo

Action Suggested Action taken

1 Current Carrying capacity of all the 220kV Transmission lines in Mumbai

need to be calculated and made available to the

system operators for ready reference.

Thermal limit of each line will be calculated and sent to SLDC.

Implementation of Recommendations by MSETCL

22

Sr No Action suggested Action taken

1 Strengthening of associated infeed lines and substation equipment at 220 KV Borivali S/S

1)Single 0.4 ACSR conductor is being replaced by twin 525 sq mm AAAC conductor for 220 KV Kalwa – Borivali & 220 KV Boisar – Borivali lines. Work is already taken up and expected to be completed by June-122) The existing 2x125 MVA, 220/100 KV have been replaced by 2x200 MVA 220/100 KV ICT’s at Borivali S/S.3) The existing old control and relay panels have been replaced by new C&R panels with fully numerical protective relays in order to ensure correct and reliable protection.

2 Split bus arrangement at 220 KV Kalwa S/S

At present all the three 400/220 KV ICT’s are connected to 220 KV side of

400/220 KV S/S. In order to reduce the fault level at 220 KV S/S , a proposal for connecting 220 KV side of 400/220 KV ICT 1 at old 220/100 KV Kalwa S/S is

prepared and is under process.

3 System studies of bus splitting arrangement

Short Circuit studies for Maharashtra N/W for the period 2009-10 to 2013-14 have already been carried out with the

help of M/s PRDC in July 2010

Present status of MERC Approved schemes of MSETCL

23

Present status of MERC approved MSETCL schemes

SrNo Schemes Approved

cost in Cr Commissioning Date as per DPR

Date of Approval byCommissio

n

Scheme details Status of Project

Expected Date of commissioning

1

Development & Commissioning of

Balancing and Settlement Mechanism Software for

MSLDC

1.78 December, 2008

20-03-2007( approval

no.227 dated

3.12.2008)

Development of BSM software for

implementation of ABT in Maharashtra.

Software development is completed

First bill will be generated from 1st

August 2011.

2

Augmentation of Transformer Capacities in various EHV

Substations in thearea of

Transmission O&Mcircle Kalwa

49.04 March, 2012

23-05-07 ( approval

no.198 dated

08.01.10)

Installation of additional 4x167 MVA, 400/220/33

kV ICTs at 400 kV Kharghar Substations

Tender to be floated

(Considering the development of load priority was given

to Kalwa and Padghe S/S.)

Expected Date-March-2013

24Continue…


SrNo

Schemes Approvedcost in Cr

Commissioning Date as per DPR

Date of Approval byCommissio

n

Scheme Details Status of

ProjectExpected Date of

commissioning

3 Strengthening of

Transmission System for

Mumbai

161.21 March, 2013 31-05-2007( approval

no.421 dated

18.05.11)

1) Construction of LILO on

220 KV Kharghar - Kalwa at Nerul S/S

2)Construction of LILO on 220 KV Kharghar - Kalwa at

220 kv Tiffil3)Construction of 220 KV M/C line on narrow base

M/C towers from LILO point near Nerul to Trombay s/s 4) Construction of LILO on

220 kv Kalwa - Borivali M/C line at 220 KV Mulund s/s 5)Construction of LILO on

220 KV Borivali - Boisar M/C line at 220 KV Tarapur

6)Construction of LILO on 220 KV Kharghar - Kalwa

M/C line at 220 KV Siemens

7)Construction of LILO on 220 KV Mulund - Borivali line

at 220 KV Bhandup GIS

The work of Kharghar-

Kalwa-Borivali–Boisar 220

KV M/C line is under

progress.Forest

clearance is awaited on

completion of this line

The proposed link line work will be taken

up.

Work completed

March -2013

Sept-2011

25Continue…



cost in Cr Commissioning

Date as per DPR

Date of Approval

by Commissio

n

Scheme Details Status of ProjectExpected Date

of commissioning

4 Augmentation and

Replacement OfICT and

transformers in Kalwa S/S

61.18 March, 2011 17-04-08( approval no.2713 dated

1.12.09)

Installation of addl. 4 x 167 MVA,

400/220/33 kV ICT and Replacement of 3 x 200

MVA, 400/220/33 kV ICT by

3 x 167 MVA, 400/220/33 kV ICT at

400 kV Kalwa Substation

Completed 3 x 167 MVA 400/220/33kV

ICT commissioned on 03.11.10.

One spare ICT 1 X 167 MVA commissioned on 31.12.10.Replaced ICT commissioned on 30.11.10

5 Establishment of 220kV

Indoor GIS Substation at

Bhandup, Mumbai.

93.85 March, 2009 03-12-08approvalno.1120

dated 24.05.07

1. LILO on220kV

Mulund-Borivali feeder-II at Bhandup S/S

2. 4x50 MVA, 220/22kV T/fs with 22KV indoor

switchgear.

1.Tower-NA, Erection-NA, Stringing-0/2

2.Civil-96%, electrical-90 %

1. Sept-11

2. Sept-11

6 Establishment of

220kV Substation at Knowledge Park, AiroliDist. Thane

54.19 March ,2009 28-08-09approvalno.1415

dated 4.07.07

1) Construction of 220

kV D/C Line on M/C tower

LILO on 220 kV Kalwa – Padghe Line

2) Installation of 2 x 50MVA, 220/22 kV T/Fs

Completed

Completed

Commissioned on 24.03.10

Commissioned on 26.03.10

26Continue…



cost in Cr

CommissioningDate as per

DPR

Date of Approval by Commission

Scheme Details

Status of Project

Expected Date of

commissioning7 Establishment of

220/22 kV Sub-Station in Bhiwandi-

IV,Dist.Thane

54.91 March , 2012 01-12-2009( approval

no.635 08.06.11 )

1. LILO of 220 kV

Kalwa-PadgeD/C Line at Bhiwandi –IV

2. 4×50 MVA ,

220/22 kV transformer

Order placed on

M/S Areva & M/S Jyoti

No- 9764 Dt 29-06-11

Nov-12

8 Augmentation of 400 kV Kharghar S/S with Six other

EHV S/S

184.44 March, 2011 31-12-2009(approval

no.198 dated 8.1.10)

Addition 4x167 MVA, 400/220/33 kV ICTs at

400 kV KhargharS/S

Specified at Sr no.2

(Civil work allotted)

9 Replacement of existing RTUs and commissioning of additional RTUs &

DCs for Load Despatch Centers

at Kalwa and Ambazari

63.29 March ,2009 Approval no.1163

dated 31.5.07

1) 55 Nos of Replacement of existing old

RTUs 2) 10 Nos

Replacement of existing old

DCs

89 RTU-DCCommissind out of 14

e0

Scheme is likely to be

completed by September

2011.

27Continue…


Sr.No Schemes Approved

cost in Cr

Commitioning Date

as per DPR


Status of Project

Expected Date of

commissioning

10

Construction of 220 kV M/C Lineson M/C Narrow Base Towers for strengthening of

Transmission System for

Mumbai

566.32 March, 2012

(Approval no.1671 dated

28.08.09)

Erection-49/410, Stringing-11.17/516forest clearance

awaited Dec-2012

28Continue…


SrNo Schemes

Approvedcostin Cr

Commissioning Date as per DPR


Remark Status of Project

Expected Date of

commissioning

11

Augmentation of Substations

under LE (Life Extension) scheme for

replacement of old outdated and deteriorated CBs,CTs, PTs, Control

Cables, LAs, Isolators

Batteries and other substation allied materials.

44.51 March, 2013 Approval no.679 dated

14.06.11

Replacement of

various equipmentsof 19 EHV

substationsunder

Washi Zone

Indent placed

with CPA on Dt. 28-

07-11

29Continue…


Sr.No Schemes Approved

cost in Cr

Commiss-ioning

Date as per DPR


Scheme details Status of Project

Expected Date of

commissioning

12

Augmentation of Transformer

Capacities in Four EHV Substations in

Kalwa Circle

36.23 March, 2012

Approval no.823 dated

28.06.11

1) Additional 3×50 MVA 220/22 kV Transformer at 220 kV Kolshet & Nerul

S/S 2) Replacement of 1x125 MVA ICT by 1x200 MVA, 220/100 kV ICT at 220

kV Padghe S/S 3)Replacement of 1x20

MVA Transformer by 1x50 MVA, 100/22 kV

Transformer at 100 kV Washi S/S

Kolshet S/S –tender to be

floatedNerul S/S –

Work in progress . Old

T/F being used.Foundations

ready

Dec 11

13

Installation of additional

Transformer at 220 kV Bhiwandi-II (Kamba) S/S, District- Thane

10.87 March, 2012

Approval no.1517 dated

15.11.10

i) Additional 1x50 MVA, 220/22 kV Transformer. ii) 22 kV GIS bays – 15 Nos work in progress by

M/s Siemens

Space not available . 100 KV O/H line to be shifted by cable. 220 Kv line crossing

involved. Proposal under preparation 30

Present status of MERC Approved schemes of TPCL & R-Infra

31

TPCL

R‐Infra

Conclusion:‐1) 400 KV Navi Mumbai (PG) S/S is expected in Nov 2011 . Hence TPCL

should immediately take up the work of 400 KV Navi Mumbai(PG) –Vikhroli S/C Quad line along with 400 KV Vikhroli S/S.

2) R‐infra to take up the work of 400 KV Ghodbunder S/S and associated lines.

3) Inter connection of 220 KV Saki(R‐Infra) & 220 KV Trombay (TPCL) .4) Inter connection of 220 KV Saki(R‐Infra) & 220 KV Saki (TPCL) .5) Shifting of R‐Infra’s Aarey load to TPCL’s Saki S/S6) 220 KV Borivali(MSETCL)‐Borivali(TPC) 2nd Ckt (TPC Dec 11)7) Conversion of existing 220 KV corridor from Kharghar to Boisar with

High Ampacity conductor and strengthening of this corridor (MSETCL)

8) LILO of existing 220 KV Boisar(MSETCL)‐Borivali (MSETCL) at 220 KV Ghodbunder S/S (R‐Infra) 10 KM (Dec‐11)

9) Commissioning of 220 KV Kalwa – Salsette 3rd Ckt

32

THANK YOU

33

Presentation to Hon. MERC on- final report on ‘ … 58 42/4_MUMBAI_Recommend(STU).pdf1....

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Transcript of Presentation to Hon. MERC on- final report on ‘ … 58 42/4_MUMBAI_Recommend(STU).pdf1....