BHEL successfully commissions country's first indigenously-developed Phase Shifting Transformer

03 Dec 2014 Evaluate

Bharat Heavy Electricals (BHEL) has successfully developed, manufactured and commissioned country’s first Phase shifting transformer (PST) Kothagudem thermal Power Station (KTPS) stage VI in Telegana. The PST has been designed to provide phase shift of +15 degree. This is a major development and has opened a new line of business for BHEL.

The 400 kV, 315 MVA rating Phase Shifting transformer will be utilized to control and improve the power floor between 400 KV & 220 kV network in either direction by providing phase shift as per the system requirement.

A Flexible AC Transmission System (FACTS) device, the PST is a combination of a shunt and a series transformer. Significantly, with the commissioning of the above PST, the existing overloaded 220 kV lines shall be relieved and power can be pushed through the 400 kV transmission line, thus improving the transmission efficiency of both 400 kV and 220 kV lines, and also avoiding grid collapse in case of system instability. In fact, the remarkable benefits derived by transmission networks through deployment of PST, is an outstanding Smart Grid solution in true sense.

In the field of Power Quality Improvement, BHEL has fully established its capability to undertake new products I systems using technologies developed in-house like Controlled Shunt Reactors, Grid Compensation Schemes like FSC, STATCOM for utility applications.

BHEL is the largest manufacturer of transformers in India, having supplied more than 4,000 transformers, aggregating to over 3,00,000 MVA in cumulative capacity for transmission and distribution networks, which are the mainstay of the Indian Grid. These have been supplied to all major utilities in the country including SEBs, NTPC, PowerGrid etc. On the export front, the company has supplied transformers to more than 20 countries around the world including Libya, Oman, Malaysia, Saudi Arabia and Zambia.

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