Repowering of the Peterhead Power Station provides operating flexibility, increased efficiency and emission reduction

Conference · Thu Jul 01 04:00:00 EDT 1999

OSTI ID:20014112

Haupt, A; Thiel, H J; Termuehlen, H

Repowering an existing steam plant with gas turbines is generally done to provide more output at a higher efficiency level and reduced emission levels. At the Scottish and Southern Energy-owned Peterhead Power Station the need for a high efficiency level when burning natural gas in combination with temporary fuel flexibility instead of increased output was the major issue. The 1,550 MW Peterhead Power Plant is presently burning sour gas with a high carbon dioxide content that is supplied on a must take basis. Even with the available supply of natural gas the plant will still burn some sour gas from the Miller gas field in the North Sea as long as it is available. Based on this scenario, it was decided to repower one unit of the power plant with three (3) V94.3A gas turbines and three heat recovering steam generators (HRSG's), but keep the existing steam generator operational for sour gas combustion. The existing boilers are designed to burn either sour gas, natural gas or heavy fuel oil. Operating the Peterheat plant under various operating conditions required to design the repowered Unit 1 for a variety of operating modes and to design the HRSG's to closely match the flow path design of the existing steam turbine. The repowering increased the installed capacity to 2,360 MW when burning NG in the gas turbines and SG in the boilers. However, this is prevented due to the present transmission conditions, which limit the plant's output to 1,550 MW.

• Research Organization: Siemens Power Generation Group (US)
• OSTI ID: 20014112
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
20 FOSSIL-FUELED POWER PLANTS
COMBINED-CYCLE POWER PLANTS
ENERGY EFFICIENCY
GAS TURBINES
NATURAL GAS
RETROFITTING
SULFUR
WASTE HEAT BOILERS