抽水蓄能电网发电机组负载损耗调峰方法研究

Research on the load loss peak-shaving method in pumped storage power grid

抽水蓄能电网发电机组负载损耗较高,为了提高机组负载损耗调峰控制能力,提出基于最大功率点跟踪调制的抽水蓄能电网发电机组负载损耗调峰方法。构建抽水蓄能电网发电机组的负载损耗调控等效模型,以功率、频率、电压等为参量构建发电机的电气相关参数调节模型,并根据该模型进行发电机组的稳态控制。采用最大功率点跟踪控制法进行发电机组负载损耗抑制,通过负载损耗的阶跃及方波响应情况进行调峰控制,实现抽水蓄能电网的能源快速功率调控。仿真结果表明,经该方法调控后的发电机组输出功率响应速度比采用传统方法提高了6倍,调峰能力提高了1 MW,说明该方法的输出功率控制响应速度快,输出增益高,机组负载损耗调峰控制能力强。

The load loss of the pumped storage power grid generator set is high.In order to improve the peak load control ability of the unit load loss,a load peak shaving method based on the maximum power point tracking modulation of the pumped storage power grid generator set is proposed.The load loss regulation equivalent model of the pumped storage power grid generator set is constructed.The electrical related parameter adjustment model of the generator is constructed with power,frequency and voltage as parameters,and the steady state control of the generator set is carried out according to the model.The maximum power point tracking control method is adopted to suppress the load loss of the generator set,and the peaking control of the load loss step and the square wave response is carried out to realize the energy fast power regulation of the pumped storage power grid.The simulation results show that the output power response speed of the generating set is 6 times higher than that of the traditional method,and the peak shaving capacity is increased by 1 MW.This indicats that the output power control response speed of the design method is fast and the output gain is high.Load loss peak shaving control ability is enhanced.