Reactive Power Control Strategy Based On Active Power Regulation Of Energy-intensive Load

Due to the dual pressures of energy depletion and environmental protection,the development and utilization of renewable energy has developed rapidly.In order to solve the problem of insufficient power peaking,load-net-source coordinated control become a hot research topic currenttly,that means energy-intensive load(EIL)located in renewable energy bases paticapates in power grid peaking.That control method increases peak regulation capacity as well as improves the ability of consumption of renewable energy.However,it brings new challenges to the power control of the internal power grid of the EIL enterprise,especially the response problem of reactive power and voltage to the active power control is particularly prominent.According to the above situation,this article starts from the reactive power demand analysis of the internal power grid of EIL after it takes part in active power regulation.Then variation of voltage and reactive power caused by different power control modes involving EIL is being analyzed theoretically,followed with reactive power reponse characteristics of reactive power compensation equipment of EIL and the substation connected to the main grid and the reactive power consumption characteristics of production equipment of EIL.Based on that,control modes and optimal control methods and strategies based on the voltage and reactive power response to active power regulation of EIL are put forward,which aim to improve the internal reactive power voltage control level of EIL.At last,the internal grid of Jiugang EIL enterprise located in Hexi area,Gansu province is simulated with actual operating data,and it verified the control strategies proposed by this article are feasible and effective.