Abstract
Turbine control system (TCS) controls the speed of turbine and the load of generator. Its reliability directly affects the stability of turbine operation and the quality of electric power. In Korea, the nuclear power plant (NPP) have supplied fundamental portion of domestic electric energy consumption for over 20 years. Demands for retrofitting old TCSs have increased as time goes on because of maintenance difficulties and spare parts shortage. Last year, Korea Electric Power Institute (KEPRI) developed a digital TCS (DTCS) and used it for retrofitting an analog TCS in a NPP. The result was success, and the turbine has been operated reliably with the new DTCS for over one year from initial start up. This paper describes major features of the developed TCS and the results of application.
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