Transmission System Planning - NPTI Durgapur

A MAHARATNA CPSE

Transmission System Planning- New technology, FACTS & HVDC

Anil Kumar Meena

DGM (CTU-Plg)

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A MAHARATNA CPSE

Power Supply Value Chain

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All Segments need to be Strengthened Simultaneously & Harmoniously

LOAD

GENERATION

TRANSMISSION

A MAHARATNA CPSE

Self Sufficiency at State Level

Self Sufficiency at Regional level

Optimal Utilization

of Resources at National

level

State → Region → Nation: A Paradigm Shift

1950s

• Local

1950s-60s

• State Grid by SEBs

1970s-80s

• Regional Grids with Trans. Systems of Central Gen. Stations

1990s-2010

• Interconnecting Regional Grids with HVDC

2010-2019

• National Grid

NATIONAL GRID - DEVELOPMENT

NEW – SR grid synchronized in Dec’13[One of the largest Grids in the world]

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Peculiarities of Regional Grids in India

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Hydro – In North Eastern & Northern

Himalayan region

Coal – In Central India

‾ Chhattisgarh , Odisha , Jharkhand,

Madhya Pradesh

‾ Coastal (Imported Coal based)

Andhra Pradesh, Tamil Nadu, Gujarat

Renewable Energy – Solar & Wind

Across the country

‾ Major Potential Areas : Tamil Nadu,

Andhra Pradesh, Karnataka, M.P,

Rajasthan, Maharashtra, Gujarat

Energy resources (Coal, RES etc.) unevenly distributed

ENERGY RESOURCES

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Development of National Grid

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• Indian Grid was divided into 5 independent Regional Grids

• Initially, National Grid was formed by interconnecting different regions through HVDC Back-to-Back Links

• Subsequently, regional grid have been synchronised in progressive manner through EHVAC links

• Presently, synchronous National Grid has been established

• However, sstrengthening of National Grid is a continuous process to match with upcoming generation and increasing demand

5,05014,050

27,750

75,050

100,050

118,050

IX Plan X Plan XI Plan XII Plan Present XIII Plan

Inter-Regional (I-R) Capacity(MW, as at the end of)

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October 1991East & North-East

synchronized

Central Grid

March 2003West synchronized

With East & North-East

S

W

N

E

NE

5 Grids5 Frequencies

DEVELOPMENT OF SYNCHRONOUS NATIONAL GRID

NEW Grid

South

Grid

August 2006North synchronized

with Central Grid

* North East West

Dec’2013

South

synchronized

with

NEW Grid

Existing I-R Capacity

1,00,550MW

One NationOne Grid

One Frequency

* Planned (Source: CEA)

One Nation

One Grid

One Market

Reduced Power Procurement Prices in Short Term (Rs.8 p.u. in 2008 to Rs.3

p.u. now)Choice of power

procurement from anywhere in the country

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5,05014,050

27,750

75,050

100,550

118,050

IX Plan X Plan XI Plan XII Plan Present XIII Plan

Inter-Regional (I-R) Capacity(MW, as at the end of)

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National Power Scenario

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Peak Demand

~183.8GW

Annual Consumption

> 1200 BU

State28.3%

Private46.5%

Central25.2%

Sector Wise Capacity

Coal, 203.154, 55.91%

Gas, 24.937, 6.86%

Diesel, 0.509, 0.14%Nuclear, 6.78, 1.87%

Hydro, 45.4, 12.49%

Small Hydro, 4.611, 1.27%

Wind, 36.93, 10.16%

Bio Mass, 9.946, 2.74%

Solar, 31.102, 8.56%

RES17%

NR26%

ER10%

NER & Islands

1%

WR33%

SR30%

Region wise Capacity

Total Installed Capacity ~ 366 GW

Renewable: 84.4 GW

Thermal: 229.4 GW

Hydro: 46 GW

Nuclear: 7 GW

as on 30th Nov ‘19

A MAHARATNA CPSE

Transmission System Planning Process

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Inputs for ISTS Planning

Exhaustive System Studies & Component

Modelling for evolution of Transmission System

Evaluation of various techno-economic

alternatives and assessment based on Transmission

Planning Criteria of CEA

Finalisation of schemethrough stakeholderconsultation in the RegionalPower Committee(Transmission Planning){erstwhile StandingCommittee}

Connectivity/ LTA meetingof respective region

Recommendation to Ministry of Power :

TBCB or RTM by National Committee on

Transmission (NCT)

Finalisation of implementation

modalities by Ministry of Power, Govt. of

India

Open Access applications

National Electricity

Plan of CEA

Operational feedback

Demand projection (EPS) of CEA and Capacity

addition program

RTM TBCB

Discussion of schemes in the Regional Power

Committee (RPC)

Transmission System

Planning Process

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Connectivity (No evacuation Guarantee)

Access in ISTS

Long Term Access

(LTA)

• Augmentation of ISTSmay be required

• Period: > 7 years

Medium Term Open

Access (MTOA)• Based on margins in the

existing/ under executionsystem

• No system augmentation• Period: 3 months - 5 years

Short Term Open

Access (STOA)• Utilizes surplus transmission

capacity available in ISTSafter use by the long-term& medium-term customer

• Period: same day - 3months

Central Transmission Utility (CTU) POSOCO Nodal Agency

REStage-IStage-II

Conventional

Scheduling Priority: LTA >> MTOA >> STOA

Open Access in Inter-State Transmission

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NEW TECHNOLOGIES – IMPROVING EFFICIENCIES

Higher Voltages

– 400kV EHVAC → 765kV EHVAC →1200 UHVAC (Highest Voltage in theWorld)

– ±500kV HVDC → 800kV HVDC(world’s 1st multi-terminal)

Voltage Source Converter(VSC) based HVDC

GIS Substations – Largest GISin Asia at Varanasi

Making the grid smarter forenhanced reliability through -STATCOMs, WAMS, REMCs

Increase in capacity oftransmission corridor through- HTLS Conductor, SeriesCapacitor

Enhanced Stability & Reliability• Facilitating Renewable Integration, Grid

Balancing

Reduction in Land Requirement• Cost Saving; Faster Execution through GIS

Optimized Right of Way use• Increasing carrying capacity of line per

unit of ROW

Reduced Carbon Footprint

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NEW TECHNOLOGIES - Improving Reliability & Efficiencies

Remote Operation of Substations- NTAMC/ RTAMC

Drones for Line Patroling

Helicopters for maintenance

Hot Line Maintenance

Emergency Restoration System

GIS Mapping of TLs

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99

.65

99

.55

99

.77

99

.80

99

.94

99

.90

99

.92

99

.78

99

.72

99

.79

99

.81

99

.71

0

20

40

60

80

100

120

Availability

A MAHARATNA CPSE

NR

Present : 1,00,550 MW*

NER

ER

SR

WR

By 2022: 1,18,050 MW

31,020 MW

23,920 MW

21,190 MW

12,120 MW

36,720MW

7,830MW

Inter Regional Capacity

* Includes 8760 MW IR capacity under Pvt. Sector (7200MW)&STUs(1560MW).

INTER REGIONAL TRANSMISSION CAPACITY

One Nation

One Grid

One Market

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AVAILABLE TRANSFER CAPABILITY (ATC) OF WR-NR CORRIDOR

Northern Region

Western Region

Present 17850MW6 No. high Capacity corridors

4500MW, +800kV, Champa –Kurukshetra HVDC Bipole

Gwalior-Agra 765kV 2xS/c

Gwalior-Jaipur 765kV 2xS/c

Jabalpur-Orai 765kV D/c

2500MW, +500kV Mundra –Mahendergarh HVDC

Banaskantha-Chittorgarh 765kV D/c

By 2022 22000MWAddition of 2 corridors

Vindhyachal-Varanasi 765kV D/c

Upgradation of 1500MW, +800kV, Champa – Kurukshetra HVDC Bipole

NR

WR

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A MAHARATNA CPSE

AVAILABLE TRANSFER CAPABILITY (ATC) OF NEW-SR CORRIDOR

ER

SR

NR

NER

Present 9500MW 7 No. high Capacity corridors

2500MW, +500kV Talcher-Kolar HVDC

Raichur-Sholapur 765kV 2xS/c

Narendra-Kolhapur 765kV D/c (operated at 400kV)

Wardha-Nizamabad 765kV D/c

Angul-Srikakulam 765kV D/c

1000MW Jeypore Back to back HVDC

1000MW Chandrapur Back to back HVDC

By 2022 19250MWAddition of 2 corridors

Warora Pool-Warangal 765kV D/c

6000MW, +800kV, Raigarh-Pugulur HVDC Bipole

WR

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INTER-CONNECTIONS WITH NEIGHBOURING COUNTRIES PRESENT LINKS

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Existing

interconnections

Present

Capacity

(MW)

Future

Capacity

(MW)

India – Bhutan 2070 4250

India – Bangladesh 1160 1160

India – Nepal 600 1000

India – Myanmar 3 3

Total (approx.) 3830 6410

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Integration of Renewable Generation

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Govt. of India set a target for 175 GW renewable capacity addition by 2022

Transmission System for new Renewable Energy Projects

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100 GW Solar(Existing: 31.5 GW; Balance: 68.5 GW)

60 GW Wind(Existing: 37 GW; Balance: 23 GW)

15 GW Biomass, Small Hydro Plant etc.(Existing: 14.5 GW; Balance: 0.5 GW)

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Challenges in Renewable integration

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• Establishment of Renewable Energy Management Centers (REMCs)

Intermittent

• Planning of SVCs and STATCOMsVariable Output

• Planning of evacuation system based on potential renewable energy zones

Short Gestation

period

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Transmission Infrastructure

ISTS by POWERGRID

3200 ckm, 6 nos. substations

(17000 MVA)

Major Part of Transmission

Commissioned, balance

anticipated by Feb’20

Grid integration of Renewables envisaged in 8 RE resource rich states

GREEN ENERGY CORRIDORS

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Implementation of evacuation system for 7 Solar

Parks (6450 MW) in 5 States by POWERGRID

ISTS for 5 Solar Parks implemented

N.P Kunta Solar Park (1500MW) in Anantpur,

Andhra Pradesh

Pavagada Solar park (2050MW) Karnataka

Rewa Solar park in MP (750 MW)

Bhadla-III & Bhadla-IV Solar Power Park (750

MW)

ATS for other Solar parks (Pavagada Ph. II [1000

MW], Essel SP [750 MW], Radhanesda [700 MW])

is under implementation

Essel Generation by Sep’20

Radhanesda (B’kantha) Generation by Apr’21

Green Energy Corridors- ISTS for UMSPPs

Rewa

Bhadla-III

Bhadla-IVEssel

Radhanesda

NP Kunta

Pavagada

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A MAHARATNA CPSE

RENEWABLE ENERGY MANAGEMENT CENTRES (REMC)

Rajasthan

Maharashtra

Karnataka

TN

MP

Gujarat

AP

WRLDC

SRLDC

NRLDC

NLDC

NLDC

Commissioned

Ant. Schedule-Jan’20

Funded by Ministry of Power, GoI

11 no. of REMC : 7 States + 3 Regions + 1 National level

NRLDC

Raj

WRLDC

MP

Guj

Mah

SRLDC

TN

AP

Kar

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Under implementation• REMC at Telangana• EMC at Andaman and Nicobar

A MAHARATNA CPSE

For System Stability• 14 no. of Hybrid

STATCOMs (11,350MVAr) • 4 no. of SVC (2500MVAr)• 48 nos. FSC/TCSC

SVCs and STATCOMs

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A MAHARATNA CPSE

SECI / MNRE provided inputs on Solar & Wind Energy Potential Zones in RE

resource rich States

Transmission System evolved for 66.5 GW RE potential

- Solar : 50 GW; Wind :16.5 GW

- NR: 20GW (S: 20GW)

- WR: 28GW (S: 20GW, W:8GW )

- SR: 18.5GW (S:10GW, W: 8.5GW)

- Estimated Cost : ~ Rs 41,700Cr

Transmission system for Prioritised REZ Schemes are to be implemented in

three phases

o Phase-I : 12.4 GW by Dec’20

o Phase-II : 26.1 GW by Dec’21

o Phase-III : 28 GW beyond Dec’21

NEW RENEWABLE ENERGY ZONES

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POWERGRID TODAY

• Transmission Lines~ 1,61,790 ckm

• EHVAC, UHVAC and HVDC Substations248 Nos.

• Transformation Capacity~3,96,824 MVA

Transmission System Availability for FY 2018-19: 99.71%

Data as on 30.11.2019

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INSTITUTION & CAPACITY BUILDING

Created Self-sufficiency in the country for all major equipment

Factories set up in India as per POWERGRIDprocurement conditions

765 kV Transformers/Reactors

765kV GIS, 400kV GIS

STATCOM/ SVC

HTLS Conductor & EHV cables

OPGW

Established facility for On-grid Short Circuit Test for High Voltage equipment, through JV Saving time & forex 2nd such facility, globally

National High Power

Test Laboratory

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धन्यवाद

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A MAHARATNA CPSE

Jaisalmer(RVPN)

Jaipur(Phagi)

Bhadla (PG)(Ph-I: +1.05GW)

Fatehgarh

(Ph-I:+1.2GW)

To Jhatikara

From Banaskantha

Chittorgarh

Ajmer

Chittorgarh (RVPN)

Ajmer (RVPN)

To Moga

Bhadla (RVPN)

Ph-I : 8.9 GW

Transmission for Rajasthan SEZ: 20 GW (Ph-I: 8.9GW, Ph-II :11.1GW)

KHETRI

Fatehgarh-2(Ph-I:

2.3GW)(Ph-II:

2.2GW)

Bhadla-2(Ph-I : 2.5GW)

(Ph-II:1.05GW)

Sikar (PG)

Jaisalmer(near Ramgarh/Kuchheri) (Ph-II : 1.9GW)

Bikaner(Ph-I:+1.85GW)

Bikaner-2(Ph-II: 2.95GW)

To Bhiwani

To Gwalior

To Anta

Bhiwadi(Reversal of Balia-BhiwadiHVDC link)

Ph-II: 11.1 GW*

Narela

Bhiwadi

To Balia

* Out of 11.1 GW, 3 GW to be evacuated by RVPN through its planned/existing transmission system

Aligarh

ToMeeru

t

ToBhiwa

ni

To Mandola

To Bawana

To MaharanibaghTo

Gopalpur

Bikaner (RVPN)

Sikar-II

Neemrana

RAJASTHAN – RENEWABLE ENERGY ZONES

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A MAHARATNA CPSE

Bhuj Pool

Banaskantha

Ahmedabad

Lakadia

Vadodara

Dhule

IndoreBhuj Pool 2

Pirana(T)

Green Energy Corridor

Chittorgarh

Sankhari

Jam KhambaliyaEssar

Bachau

Substation for REZ Ph-II

Other ISTS/intra state sub stations

Substation for REZ Ph-I Part II

Substation for Green Energy Corridor

Pirana(P)

W1-II: 2GW

W1-I: 2GW*

W1-I: 1.5GWW3: 0.5GW

Substation for REZ Ph-III

Existing/Other ISTS/Intr-ISTSUC ISTS/Intr-ISTS

Tr. Scheme for Phase-2

Tr. Scheme for Phase-1 Part II


Tr. Scheme for Phase-1 Part ISubstation for REZ Ph-I Part I

Dholera UMPP

Tr. Scheme for Dholera UMPP

Dholera (4 GW)

KhavdaS3: 6.1GW

S3: 3.4GW (Khavda)

Radhanesda (0.7GW)

S3: 0.5GW (Khavda)

*LTA for 0.6GW received against total SECI LOAs of 1.28GW

GUJARAT– RENEWABLE ENERGY ZONES

A MAHARATNA CPSE

Sholapur SEZ

Parli (New)

Pune

Padghe

Sholapur(PG)

Existing Lines

Tr. Scheme for Phase-2Raichur

Warora Pool

Aurangabad

Wardha SEZ

GadarwaraRajnandgaon

Kallam PS


Bhadrawati

Parli (PG)

Substation for SEZ Ph-II


Substation for SEZ Ph-I

W3: 2GW (1GW under Intra-STS)

S3: 1.5GW

S3: 2.5GW

Sholapur SEZ (Toramba)

Wardha

Warangal

UC Lines


Substation for SEZ Ph-IIIS3: 1GW

MAHARASHTRA – RENEWABLE ENERGY ZONES

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A MAHARATNA CPSE

Indore

Khandwa Pool

Bhopal

Rajgarh SEZ

Khandwa SEZ

Vadodara

Dhule

Jabalpur

Bhopal

Bina

Indore

Pithampur

Khandwa

Itarsi

UC Lines

Existing LinesSubstation for SEZ Ph-II


Shujalpur

S2: 2.5GW

S3: 2.5GWTr. Scheme for SEZ Ph-2

Tr. Scheme for Phase-3Substation for SEZ Ph-III

MADHYA PRADESH – RENEWABLE ENERGY ZONES

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A MAHARATNA CPSE

Tuticorin Pool

Dharmapuri(PG)

Tiruvelam(PG)

Tirunelveli Pool

W1 : 500 MW

MadhugiriCuddapah

Karur PS

W1 : 2.5 GW

Pugalur(PG)

Pugalur(HVDC)

Arasur(PG)

Raigarh

N. Trissur

Somanahalli

Salem(PG)

Total REZ in SRPhase-I: 5.5 GW (Dec’21)Phase-II: 5 GW (Dec’21)Phase-III: 8 GW (Beyond Dec’21)

TAMIL NADU – RENEWABLE ENERGY ZONES

A MAHARATNA CPSE

Kurnool-III PS

W1 : 2.5 GW

W2 : 0.5 GW

S1 : 1.5 GW

Kurnool new(PG)

Cuddapah(PG)

Raichur New(PG)

Nellore(PG)

Maheshwaram (PG)Sholapur (PG)

Anantapur PS

S2 : 3.5 GW


ANDHRA PRADESH – RENEWABLE ENERGY ZONES

A MAHARATNA CPSE

Bidar PS

S2 : 2.5 GW

Madhugiri(PG)

Maheshwaram

Gadag PS

S2 : 2.5 GW

Koppal PS

W1 : 2.5 GW

Narendra(New)

Kolhapur (PG)

Dharmapuri

Tuticorin PS


KARNATAKA – RENEWABLE ENERGY ZONES

Transmission System Planning - NPTI Durgapur

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