Gas turbine compressor unit repowering

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:434097

Taylor, J S ^[1]

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1. Consumers Power Co., Jackson, MI (United States). Gas Engineering and Construction Dept.

This paper presents how a major US gas transmission and storage company restored gas storage peaking capacity by repowering obsolete gas turbine compressor units. Consumers Power Company`s Ray Field located in Macomb County, Michigan, USA, was developed as a 44 BCF working capacity gas storage field in 1966. Due to the high deliverability, the field is operated as a peaking reservoir, handling rates as high as 500 MMCFD on injection and 1,200 MMCFD on withdrawal. Ten 2,750 horsepower gas turbine driven 4-stage centrifugal compressor units were installed in the mid to late 1960`s at the field. The compression is operated 2, 4 and 8 stage, as needed, to cover storage pressures of 450 to 1,800 psig. Each centrifugal compressor is driven by a Pratt Whitney (PW) GG-12 Gas Generator firing into a Cooper-Bessemer (CB) RT-27 Power Turbine. By 1980 parts and maintenance services for the PW GG-12 Gas Generator became very expensive to non-existent. In 1994 Consumers Power committed to a gas turbine unit repowering program as the preferred choice over unit replacement. Two refurbished Solar Centaur T4500 Gas Turbine drives were purchased and installed to repower 2 of the obsolete turbine units. This paper describes the retrofit.

• OSTI ID: 434097
• Report Number(s): CONF-9606127--; ISBN 0-7918-1767-9
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
COST
GAS COMPRESSORS
GAS TURBINE ENGINES
MICHIGAN
NATURAL GAS
RETROFITTING
STORAGE FACILITIES
UNDERGROUND STORAGE