光伏分布式接入对配电网电压稳定性的影响研究

Research on the Influence of Photovoltaic Distributed Access on Voltage Stability of Distribution Network

针对越来越多的光伏分布式接入配电网对系统的电压稳定性产生的影响,分析了光伏分布式接入对配电网电压稳定性的影响机理。通过实际系统算例计算并分析不同位置、不同天气情况下光伏接入配电网的电压稳定指标,进而得出结论:光伏接入配电网末端有利于提高系统的电压稳定性,当分布式光伏接入系统后,减少了线路功率流动,提高了电压稳定性。

In view of the influence of more and more photovoltaic distributed access to the distribution network on the voltage stability of the system,the influence mechanism of photovoltaic distributed access to the distribution network on the voltage stability of the system is analyzed.The voltage stability index of photovoltaic access distribution network in different locations and different weather conditions is calculated through the actual system example.It is concluded that the photovoltaic access to the end of the distribution network is conducive to improving the voltage stability of the system.When the distributed photovoltaic access to the system,the line power flow is reduced and the voltage stability is improved.