Simulation Study on Frequency Regulation Dynamic Characteristics of Coal-fired Power Plant with Steam Turbine High-arranged
The coal-fired power plant with steam turbine high-arranged can shorten the length of the four major pipelines significantly and reduce the resistance of the four major pipelines,which may decrease the power generation coal consumption rate and enhance the responsiveness.The GSE software is used to develop dynamic models of a 660MW ultra-supercritical coal-fired power plant with steam turbine high-arranged.The regulation performances of the coal-fired power plant with steam turbine high-arranged are obtained when live steam valve and extraction steam throttling participate in primary frequency regulation,and compared with the coal-fired power plant with steam turbine conventional arranged.The results show that the adjustment time of the live steam valve participating in the primary frequency regulation can be reduced,and the adjustment time of the coal-fired power plant with steam turbine high-arranged is reduced by 2s,2.1s and 2.6s when the load disturbances are-0.3%,-0.4%and-0.5%Pe,respectively.Moreover,the adjustment time is reduced by 2.1s,3.5s and 4.1s respectively when the load disturbances are +0.3%,+0.4%,and +0.5%Pe.When the extraction steam throttling participates in frequency regulation,the adjustment time of the coal-fired power plant with steam turbine high-arranged and conventional arranged is almost the same.
coal-fired power plantsteam turbine high-arrangedprimary frequency regulationextraction steam throttling
万方数据
维普
