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 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
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
CAPACITY Carrying 45% of India’s Transmission Capacity
18
HVDC
substations70
765kV
Substations168
400kV
Substations20
SVC/
STATCOM68
GIS
Substations>290000
Transmission
Towers>3800
Transformers
and Reactors
System Availability (%)
Tripping/ Line
