Submitted To: Submitted By:TANUJ BHARDWAJ DHARMPAL YADAV

PGCIL INDIA

Introduction

Interstate & intera state transmission system are interconnected and together the electrictygrid by Government of India(GOI).

IN 1963 India was divided in five region . PGCIL(power grid corporation of india

limited) was established in 1989 to implemented the decision of GOI to form a NATIONAL GRID .

Business

POWERGRID operates throughout india. It transmission network consists of roughly

134,018 circuit kilometers It consisats 214 EHVAC & HVDC stations, which provide total transformation

capacity of 278,862 MVA. POWERGRID is listed on both the BSE &

the NSE.

• Generation

• Peak Demand : 132 GW

• Growth Rate : 9 – 10 % (per annum)

Total Installed Capacity – 228.7 GW (As on

30.09.13)

NER

ER

NR

WR

SR

India - Present Power Scenario

National Load Despatch Centre (NLDC)

1. Northern Regional Load Despatch Centre (NRLDC)

2. Western Regional Load Despatch Centre (WRLDC)

3. Eastern Regional Load Despatch Centre (ERLDC)

4. Southern Regional Load Despatch Centre (SRLDC)

5. North-Eastern Regional Load Despatch Centre (NERLDC

REGION Dispatch Center Installed Capacity

Northern Delhi 31,307 MW

Southern Bangalore 32,779 MW

Eastern Kolkata 16,410 MW

Western Mumbai 32,761 MW

North-Eastern Shillong 2,357 MW

Location of RLDC’s and Installed Capacity

• Northern Grid : Deficit Region , highly weather sensitive load, Adverse weather conditions like fog and dust storm

• Sothern Grid : High load , Monsoon dependent hydro

• Eastern Grid : Low load ,High coal reserve • Western Grid : Industrial Load • North-Eastern Grid : Very low load , High

hydro potential , Evacuation problems

Peculiarities of Regional Grids in India :

Region Demand Supply Deficit

Northern 54,329 MW 54,137 MW -0.4%

Southern 43,630 MW 35,011 MW -19.8%

Eastern 18,507 MW 19,358 MW +4.6%

Western 48,479 MW 50,254 MW +3.7%

North-Eastern

2,650 MW 2,544 MW -4%

Region wise Power Demand and Supply position

Region wise availability of power generation resources

Region Number of resources

Northern 61

Southern 51

Eastern 49

Western 71

North-Eastern 8

Total Installed capacity : 2,01,181 MW Future : 2,08,790 MW

• Conventional Resources (Including Nuclear , Thermal ,Gas/liquid, Hydro)

Region Number of resources

Northern 9

Southern 23

Eastern 18

Western 13

North-Eastern Nil

Total Installed capacity : 38,283.59 MW

• Non-conventional Resources (Including Wind ,Solar)

National Grid

1950-60’s1970-80s

2000 onwards

Local

1950’s

State Grids by SEBs

Regional Grids with ATS of

Central Generation

(Paradigm Shift from self sufficiency at Regional level concept to National level)

Interconnecting Regional Grids

with HVDC

1990s

0

50000

100000

IX Plan X Plan XI Plan XII Plan

510014100

27750 66400

IR Capacity (MW)

Evolution of National Grid

15

NEW Grid

SouthGrid

South

West

NorthEast

Northeast

Five Regional GridsFive Frequencies

October 1991East and Northeast

synchronized

March 2003West synchronized

With East & Northeast

August 2006North synchronized

With Central Grid

Central Grid

Five Regional GridsTwo Frequencies

Installed Capacity 229 GW

MERGING OF

MARKETS

Region links Transaction capacity

ER-WR Two 400 kV lines with TCSC (Raipur-Rourkela) . Three 220 kV lines (Korba-Budhipadar)

1200 MW

WR-NR 500 MW HVDC Back-to-Back (Vindhyachal-Singrauli)

450 MW

ER-SR 500 MW HVDC Back-to-Back (Jeypore-Gazuwaka) . 2000 MW HVDC Bi-pole (Talcher-Kolar)

2250 MW

WR-SR 1000 MW HVDC Back-to-Back (Bhadravati-Ramagundam -Chandrapur)

900MW

ER-NER 400 kV AC Line (Malda-Bogaigaon) . 400 kV AC Line (Birpara-Salakati)

1050 MW

ER-NR 500 MW HVDC Back-to-Back (Sasaram-Pusauli)

450 MW

SR-WR 765KV AC Line (Raichur – Solapur)(under construction)

2000 MW

Salient features of Regional interconnection of grids in India :

Transmission network spread geographically over 3.3million sq

km : Inter-State and Intra-State level

Transmission line : 2,80,571 ckm (POWERGRID : 1,020,000 ckm)

220kV : 1,42,536 ckm 765kV : 7910 ckm 400kV : 1,20,693 ckm HVDC Bipole (±500kV) : 9,432 ckms

Transformation capacity (MVA/MW) HVAC :474,091 MVA

(POWERGRID : 170,000MVA, 171 S/s)−765kV : 56,500 MVA−400kV : 170,397 MVA−220kV : 247,194 MVA

HVDC : 13,500 MW

FSC – 33nos., TCSC – 6 nos.

SOUTHERN REGION

WESTERNREGION

EASTERN REGION

NORTHERN REGION

NORTH-EASTERN REGION

1

2

The‘Electrical’

Regions

Transmission Network - Present

18

14,230 MW

WR

NR

NER

ER

SR

1,520 MW3,630 MW

4,390 MW

1,260 MW

6,220 MW

Present IR Capacity – 31,850 MW

WR

Inter-Regional Capacity - Existing

Our Nertworks

Company owns and operates about 1,35,319 ckt kms of transmission lines at 800/765kV, 400kV, 220kV & 132kV EHVAC & +500kV HVDC levels and 217 sub-stations.

Also the transformation capacity of about 2,80,992 MVA as on 28th February  2017

Opportunities in Future

Indian power system is facing high AT&C Losses, poor distribution network, wide demand – supply gap of energy, poor asset management etc. Smart grid technology will bring solutions to all of the mentioned problems and sustainability by way of demand side management, demand response, outage management, reduction in AT&C losses and improved customer satisfaction

Advantages of Electric Grids

o Reduced operational costo Increased employee safetyo Increased revenue

o Volatility arising from dynamic pricing might cause catastrophic rate spikes (similar to Uber’s surge pricing)

o Complicated rate structures might not incentivize (encourage) efficiency if customers do not understand what their current rates are.

Disadvantages of Electric Grids

With the completion of Raichur - solapur 765KV line India becomesone of the largest operating synchronous grids in the world (one grid one nation) and Interconnection of international grids help in the improvement of Economy of the country as well as it builds positive relationship between neighbouring countries by power sharing/trading

Conclusion

Thanks