Research on the Frequency Control Strategy of Hydro-thermal Power Generating Units
There is a large number of hydropower generating units in the UHVDC transmission project of Hami-Zhengzhou power network. The hydro-thermal hybrid power generation have great safety and economic benefits. Primary frequency regulation is an important means of maintaining the stability of grid frequency. Under the condition of high proportion of hydropower units, this paper analyzes the influences of different parameters on grid frequency, and the joint frequency control strategy of hydro-thermal power units. And simulation results verify the feasibility of the joint control strategy for the hydro-thermal hybrid power generation units, which is of great significance to the stability of the whole sending-end grid and even the stability of UHVDC transmission system.