Control System
The H System. uses an inte-grated, full-authority, digital control system—the Mark VI. The Mark VI also manages steam flows between the heat recovery steam generator, steam turbine, and gas turbine; stores critical data for troubleshoot-ing; and uses pyrometers to moni-tor stage 1 and stage 2 turbine bucket temperatures. The pyrometer system offers rapid detection of rises in temperature, enabling automatic turbine shutdown before damage occurs. The demonstrated success of the Mark VI has prompted GEPS to incorporate it into other (non-steam cooled) engines.

Energy Secretary Bill Richardson, flanked by Robert Nardelli of GE and South Carolina Senator Ernest Hollings, introduced GE’s gas turbine at a ceremony in Greenville, South Carolina.  Richardson stated: “This milestone will not only help maintain a cleaner environment, it will help fuel our growing economy, and it will keep electric bills low in homes and businesses across our country.”
G
E Power Systems has completed its work on the DOE ATS Program, and has achieved the Program goals.  A full scale 7H (60 Hz) gas turbine has been designed, fabricated, and successfully tested at full speed, no load conditions at GE’s Greenville, South Carolina manufacturing/test facility.
The GE H SystemTM combined-cycle power plant creates an entirely new category of power generation system. Its innovative cooling sys-tem allows a major increase in firing temperature, which allows the combined-cycle power plant to reach record levels of efficiency and specific work, while retaining low emissions capability, and with reli-ability parameters comparable to existing products.
The design for this “next generation” power generation system is now established. Both the 9H (50 Hz) and the 7H (60 Hz) family members are currently in the production and final validation phase. The exten-sive component test validation program, already well underway, will ensure delivery of a highly reliable combined-cycle power generation system.

Siemens Westinghouse Power Corporation ATS Turbine
Siemens Westinghouse Power Corporation (SWPC) has intro-duced into commercial operation many key ATS technologies.  Oper-ating engine demonstrations and ongoing technology development efforts are providing solid evidence that ATS program goals will be achieved.
In response to input from its customer advisory panel, SWPC is introducing advanced technologies in an evolutionary manner to minimize risk.  As performance is proven, SWPC is infusing ATS tech-nologies into commercially offered machines to enhance cost and per-formance and expand the benefit of the ATS program.
The first step in the evolution-ary process was commissioning of the W501G. This unit introduced key ATS technologies such as closed-loop steam cooling, ad-vanced compressor design, and high-temperature materials. After undergoing extensive evaluation at Lakeland Electric’s McIntosh Power Station in Lakeland, Florida, the W501G entered commercial ser-vice in March 2000. Conversion to combined-cycle operation is sched-uled for 2001.
　
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