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Transmission

  • Firsts in
    POWERGRID

  • Transmission
    Asset Management

  • POWERGRID Transmission System in Numbers

Firsts in POWERGRID

POWERGRID has been a leader in Indian Power Transmission Sector in terms of adoption of latest State of the art for improved operational efficiency of transmission assets. Since its inception, it has focused on integration of upgraded technologies in Power Transmission. Major operational highlights during its journey has been

  • 1980

    220kV D/c Bairasul – Pong put in service on 18th May, 1980 - Oldest asset in POWERGRID’s network

  • 1984

    400kV Hyderbad Station commissioned on 20th Sept, 1984- Oldest substation in POWERGRID

  • 1989

    First Back-to-Back HVDC terminal established at Vindhayachal substation

  • 1990

    First 500kV HVDC bipole link established (Rihand-Dadri)

  • 1991

    First SVC commissioned at Kanpur, Uttar Pradesh (±140 MVAR)

  • 1997

    First GIS commissioned at 220kV Kayankulam substation - Station handed over to NTPC in 2007

  • 2007

    First 765kV AIS commissioned at Seoni, Madhya Pradesh

    First 400kV GIS commissioned at Maharanibagh, Delhi

  • 2012

    Trial development of world’s first 1200kV test substation at Bina, Madhya Pradesh

  • 2013

    Commissioning of 765kV Raichur-Solapur Transmission Line - Creation of One nation one grid one frequency

  • 2014

    Estbalishment of National Transmission Asset Management Centre (NTAMC) at Manesar, Gurugram (Haryana)

  • 2015

    Commissioned world's longest (about 1800 KM) multi-terminal ±800kV HVDC link between Agra and Biswanath Chariali

  • 2019

    World's highest altitude (above 11500 ft. or 3500 m) GIS station commissioned at Drass, (UT of Ladakh)

  • 2020

    Developed India's first 400kV digital substation by retrofitting conventional control and protection system at Malerkotla, Punjab

  • 2021

    India's first VSC based HVDC link commissioned between Pugalur and Thrissur

  • 2021

    World's first 400kV Natural Ester oil based shunt reactor

Transmission Asset Management

Power Grid Corporation of India Limited, a transmission licensee, takes continuous action regarding operation and maintenance of its transmission assets to ensure compliance with prescribed standards as well as to achieve high availability of the system for uninterrupted power supply to customers. POWERGRID’s O&M activities are ISO certified and systems and procedures are revised periodically to abreast with the technology.

POWERGRID’s transmission asset life-cycle management, risk management, and asset-related supporting activities are intended to support decisions on the optimal maintenance and renewal strategies, allocation of scarce resources and employment of reactive or proactive approaches.

Asset Management

Asset managers are responsible for keeping assets healthy and operational, maintaining and optimizing asset life-cycle cost and value in a long-term perspective based on asset criticality and failure predictions. Designing replacement and maintenance programs implies achieving optimal capacity, higher equipment effectiveness, reliability and flexibility of the system, and as a result, lower maintenance costs, higher profit-making capability and increased financial returns on assets.

Transmission Line Maintenance Practice

TRANSMISSION LINE MAINTENANCE PRACTICE

Substation Maintenance Practice

SUBSTATION MAINTENANCE PRACTICE

In terms of Operation and Maintenance of assets, POWERGRID has adopted several innovations in the last 5 years to improve system efficiency. Some of these are

Use of State-of-the-art condition monitoring techniques viz. FRA and FDS for transformers, DCRM for Circuit Breakers, THRC for Surge Arrestors etc

Aerial patrolling of transmission lines using Helicopter equipped with Gimbal mounted, Thermo-vision Camera, Corona Camera etc.

App Based (PG-DARPAN) Ground Patrolling of transmission lines

Disaster Preparedness and proactive mitigation thorugh GIS mapping of transmission assets

Asset Health Indexing for Transformer and Reactors

Remote Operations of substations through NTAMC/ RTAMCs

As on 31.12.2022
  • CKM Transmission Lines
    173,791
    CKM Transmission Lines
  • Sub-Stations
    270
    Sub-Stations
  • System Availability
    >99 %
    System Availability
  • MVA Transformation Capacity
    493,042.7
    MVA Transformation Capacity

CAPACITY Carrying 45% of India’s Transmission Capacity

  • 18

    HVDC
    substations
  • 60

    765kV
    Substations
  • 160

    400kV
    Substations
  • 17

    SVC/
    STATCOMs
  • 57

    GIS
    Substations
  • >280000

    Transmission
    Towers
  • >3600

    Transformers
    and Reactors

System Availability (%)

 

 

Tripping/ Line