含PV的配电网电压稳定性分析仿真实验设计

Design of simulation experiment for voltage stability analysis of distribution network containing PV

在建立电压灵敏度模型的基础上,提出了光伏电压稳定性判据。利用电压灵敏度的特性曲线和稳定性判据,对光伏配电网电压的稳定性进行了分析。针对接入数量与注入容量对电压灵敏度的影响,设计了2组仿真实验。仿真实验结果表明:随着光伏发电装置接入数量的增多,电压的稳定程度随之提高,在一定程度上加大光伏发电装置的注入容量将提高电压的稳定性;但如果对PV的容量不加限制,将适得其反。

Based on the establishment of the voltage sensitivity model,a criterion for PV voltage stability is proposed.The characteristic curve and stability criterion of voltage sensitivity are used to analyze the voltage stability of the PV distribution network.Two sets of simulation experiments are designed according to the influence of access quantity and injection capacity on voltage sensitivity.The results of the simulation experiment show that with the increase of the number of PV accesses,the voltage stability will be improved.To some extent,increasing the injection capacity of PV will improve the voltage stability,but if the capacity of PV is not limited,it will be counterproductive.