Summary
The rapid growth in electricity demand, renewable energy integration, and urbanization has placed immense pressure on existing power transmission infrastructure. Many regions especially developing countries still rely heavily on 66 kV transmission systems designed decades ago for lower load requirements. All the developing countries are rapidly expanding and diversifying their economies requiring exponential increase in the energy demand putting immense pressure on the transmission network coupled with rapid population growth and urbanisation. Due to this, lot of Right of Way (RoW) problems are arising posing major problem in construction of new corridors of transmission lines. Thus, to meet modern energy demands sustainably, utilities are increasingly adopting smart grid expansion including upgrading existing infrastructure.
Read more Read lessIndia is a rapidly developing economy whose energy demands are constantly increasing, leading to continuous development of new transmission network. However, at number of places construction of new transmission lines is not feasible due to number of problems like Right of
Way issues, environmental issues, topographical constraints, etc. This is specially evident where upgradation of existing generating stations is being undertaken where upgrading existing transmission network is the most techno-commercial solution. There are various ways to address this issue, most prominent being replacing existing ACSR Conductors with HTLS
Conductors. However, the biggest challenge is in those areas where the existing transmission network is at low voltage which is required to be increased to 220 kV level. Such upgradation can be easily undertaken at the sub-station but the problem lies for the transmission lines.
The organisation is operating and maintaining the highest concrete gravity Damof height 226 meter of India along with three other dams on river Satluj and Beas. The water released through this highest concerete gravity dam for irrigation and drinking water needs is first utilized in two
Dam Power houses viz. Left Bank Power House (630 MW) and Right Bank Power House (785
MW). The Left Bank Power House was constructed during 1960s with an installed capacity of 450MW (5x90MW). The evacuation of power was through two different sub-stations on left bank side at 220kV level and 66kV level. With period of time modernisation and uprating was done. It led to increase in power generation capacity of Left Bank Power House to 630MW
(5x126MW). Due to uprating, unit no. 1 of left bank power house was upgraded to 220kV and planned to be connected to the existing 220kV switchyard of Right Bank Power House, geographically located on the other side of Dam after crossing the Satluj River. Due to topographical, dam safety and ecological issues construction of new 220kV interconnecting line was not possible. Thus, the requirement was felt to upgrade the existing 66kV interconnecting line. Accordingly, it was taken as a challenge and successfully completed. This paper throws a light on this upgradation which although was carried out as a solution to a typical problem but has provided with data and experience which will go a long way in helping to upgrade other transmission lines.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B2_10371_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | India |
| Study committees | |
| File size | 748 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
SHEOKAND* Ravinder; TRIPATHI Manoj
Keywords
