Indigenously developed, manufactured and commissioned by BHEL

The first indigenously developed and manufactured Phase Shifting Transformer (PST), a device that helps improve transmission efficiency, has been commissioned in Telangana by Bharat Heavy Electricals Ltd.

Announcing the successful commissioning of its PST at the Kothagudem Thermal Power Station Stage-VI, the Central Public Sector Enterprise on Wednesday said it is an outstanding smart grid solution in the true sense considering the “remarkable benefits” it would have for transmission networks. “This is a major development and has opened a new line of business,” the company said.

BHEL received the order for the 400 kV/220 kV, 315 MVA rating PST, which is to be utilised to control and improve power flow between both the networks in either direction, from the Telangana State Power Generation Corporation Ltd.

A Flexible AC Transmission System (FACTS) device, the PST, a release from the company said, is a combination of a shunt and a series transformer. With the commissioning, the existing overloaded 220 kV lines shall be relieved and power can be pushed through the 400 kV line, thus improving the transmission efficiency of both lines and also avoiding a grid collapse in case of system instability.

The PST has been manufactured at BHEL’s Bhopal plant, which is equipped to manufacture transformers up to 1,200 kV range. The plant also has its own ultra high voltage laboratory, one of its kind in the country, the release said.

source: http://www.thehindu.com / The Hindu / Home> News> National> Telangana / by Special Correspondent / Hyderabad – December 04th, 2014