基于序贯模拟法含光伏电源的配电系统可靠性评估

Reliability Evaluation of Distribution System with Photovoltaic Power Supply Based on Sequential Simulation Method

近年来光伏发电逐渐受到广泛的关注,光伏电源的波动性和间歇性特性对准确评估其可靠性十分重要。首先建立了配电网光伏电源、负荷和元件的时序模型,并采用基于时间轴的同步抽样法对系统状态抽样,然后提出了序贯模拟法的仿真步骤。最后,基于序贯模拟法对实际系统算例进行了计算分析。结果表明,光伏电源对系统可靠性的提升作用与其接入位置和接入容量有关。

In recent years,photovoltaic power generation has attracted more and more attention.The fluctuation and intermittent characteristics of photovoltaic power supply make it very important to accurately evaluate its reliability.Firstly,the time series model of photovoltaic power supply,load and components in distribution network is established,and the synchronous sampling method based on time axis is used to sample the system state.Then,the simulation steps of sequential simulation method are proposed.Finally,a practical system example is calculated and analyzed based on the sequential simulation method.The results show that the improvement of system reliability by photovoltaic power supply is related to its access location and access capacity.