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Peaking Power, Chapter Twenty: F-Technology and Beyond

Published on December 26, 2012 By dlucier

General Electric began offering the MS7001FA around the turn of the 21st Century.  The most obvious distinguishing feature of the 7F technology was the “cold-end-drive” design.  The generator is connected to the compressor end of the turbine rotor, a departure from GE design concept for over 50 years.  Also, unlike the MS7001EA design, the 7F [...]

Peaking Power, Chapter Nineteen: Metals, Ceramic Coatings & Cooling

Published on September 24, 2012 By dlucier

Sometimes it is more prudent to invest in existing power plants to improve efficiency and power output than to retire and replace them with newer units.  Improving gas turbine performance has much to do with raising turbine “firing” temperature to higher values.  This has become possible by improving metals in the hot gas path, protecting [...]

Peaking Power, Chapter Seventeen: The Long Anticipated 7EA!

Published on July 19, 2012 By dlucier

General Electric introduced the MS7001EA in the early 1990s to much fanfare, and deservedly so.  From the introduction of the first so-called Frame 7B two decades earlier, the 7EA evolved and soon proved to be a workhorse machine of the power generating industry.  It is rated about 90 MW at ISO conditions, a good size [...]

Peaking Power, Chapter Thirteen: Speedtronic™ Control and Protection Systems

Published on January 30, 2012 By dlucier

General Electric unveiled its first electronic control and protection system in 1970.  It was called Speedtronic™.   Other manufacturers similarly introduced electrical and electronic controls on gas turbines at the about same time.  The name for GE’s system came from the combination of Speed control by elecTronic.  I’ve had difficulty confirming who came up with the [...]

Peaking Power, Chapter Twelve: The Mighty MS5002 Gas Turbine

Published on November 25, 2011 By dlucier

  The two-shaft gas turbine was first introduced in the 1950s.  They showed some popularity in gas pipelines and chemical process plants in the 1960s, where variable-speed load compressors (made by manufacturers other than GE) were required.  These load compressors were designed to operate at speeds different than the gas turbine’s own axial-flow compressor.   [...]