Siemens awarded additional contracts for new SPPA-T3000 control systems for U. S. power plants
Erlangen, Germany, Feb 3, 2006, The Siemens SPPA(Trademark)-T3000 control system has been selected for the plant and turbine controls on four U.S. power plants. Three of the orders involve modernization projects for process optimization. One order is for a new plant that required a common control system for both the plant and turbine controls. The four gas-fired plants are owned by different power companies. The Siemens SPPA-T3000, introduced in June of 2005, is an advanced distributed control system (DCS), specifically designed to implement both the power plant and turbine control on a common control platform.
The Payne Creek generating station, owned and operated by Seminole Electric Cooperative (SECI), is located near Tampa, Florida. It is a 500-MW 2-on-1 combined cycle plant with two Siemens SGT6-5000F combustion turbine-generator sets, two heat recovery steam generators (HRSG), and one Westinghouse steam turbine-generator. SECI decided to upgrade its Payne Creek combustion turbines, which requires an increase of both control capacity and functionality to the existing control system. Instead of expanding the existing system, the customer ordered the SPPA-T3000 control system. The control system will perform turbine governor control functions for the combustion and steam turbines as well as the plant control functions for the steam generators, and will also implement the auxiliary control systems.
Constellation Energyís High Desert power plant is an 830-MW combined cycle power plant located in Victorville, California, and supplies power for Los Angeles and Southern California. The plant features three Siemens SGT6-5000F combustion turbines, which are under contract for a scheduled upgrade. As part of Constellationís upgrade program, the plantís combustion turbine controls are to be upgraded to the SPPA-T3000 system, which also will serve as the basis for a process optimization package for the combined cycle plant
The Reliant Energy Mandalay generating station, located near Los Angeles in Oxnard California, has two gas-fired steam units rated at 215-MW each. Unit 1 has a boiler with a steam turbine-generator that began operation in 1959. Reliantís desire to enhance plant performance, availability and market opportunity were drivers for the projects. The new SPPA-T3000 DCS is to control the boiler and plant systems and is to be the foundation for plant optimization packages to address new operating modes required to meet the local market requirements.
The Lake Side power plant is a new combined cycle power plant under construction in Vineyard, Utah. The plant is a 534-MW combined cycle plant with two Siemens SGT6-5000F combustion turbines, two HRSGs and one Siemens SST6-5000 steam turbine. The plant is being developed by Summit Vineyard, LLC and will be built by Siemens Power Generation, then owned and operated by PacifiCorp.
SPPA-T3000 was selected because it is easy for the plant operator to use, its ability to optimize both the plant and the turbine, its use of the latest control technology for the turbine and the plant, and its ability to provide real time information to business applications for economic decisions. The SPPA-T3000 is an advanced distributed control system specifically designed for all power plant applications ranging from boiler combustion control to turbine control and low cost during life cycle for long term business success.
About Siemens Power Generation
The Power Generation Group (PG), a unit of Siemens AG, is one of the premier entities in the international power generation sector. In fiscal 2005 (which ended September 30), Siemens PG posted sales amounting to approximately EUR8.1 billion and received new orders totaling EUR10.9 billion. Group profit amounted to EUR951 million. On September 30, 2005, PG had a work force of approximately 33,500 worldwide.
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