Opening Control Method of Hydraulic Turbine Governor and Its Application
The hydraulic turbine governor has a great impact on the AGC control and primary frequency regulation performance of hydro turbine generating units.There are a large number of hydropower units whose primary frequency regulation performance is unqualified at small frequency difference.Based on the analysis of different regulation modes of hydraulic turbine governor,this paper proposed an improved opening control method.This method used the power open-ing prediction method to control the actual AGC power,used the opening feedback to realize the frequency control,and realized the accurate control of the primary frequency regulation power through the online adjustment of the difference co-efficient.The test results show that the target power regulated by AGC meets the assessment requirement of 1%of the rated active power of the unit.The primary frequency regulation response power and the integral power contribution are basically consistent under different operation conditions.The power response ratio and the integral power are basically consistent under different frequency differences.Thus,it effectively reduces the occurrence of unqualified primary fre-quency regulation at small frequency difference in power regulation mode.
hydraulic turbinegovernoropening controlprimary frequency regulation
万方数据
维普
