研究含分布式电源 (Distributed Generation， DG)的配电网在故障隔离情况下，有效恢复对断电区域的供电，有利于配电网的稳定运行和可靠供电。将柔性软开关(Soft Open Point， SOP)替代联络开关用于配电网故障恢复过程中，能够在进行负荷转供的同时对DG进行电压支撑。由于SOP的存在，原来的单侧电源重合闸转变成了双侧电源重合闸，当断路器两侧电压不一致时会产生冲击电流，过大的合闸冲击电流将影响配电网的安全稳定运行。本文详细分析了断路器重合过程中冲击电流产生的原因，并给出了最大冲击电流的简化计算方法，通过在MATLAB/Simulink平台上搭建仿真模型证明了冲击电流计算方法的有效性；以此为依据分析了合闸冲击电流对系统侧电流保护产生的影响，验证了研究减小合闸冲击电流方式的必要性，同时为配电网分布式电源消纳容量评估提供了依据。

Studying the effective restoration of power supply to power outage areas in a distribution network containing distributed generation under fault isolation conditions is beneficial for the stable operation and reliable power supply of the distribution network. Replacing the interconnection switch with a Soft Open Point in the fault recovery process of the distribution network can provide voltage support to the DG while transferring the load. Due to the existence of SOP, the original single-sided power supply reclosing has been transformed into double-sided power supply reclosing. When the voltage on both sides of the circuit breaker is inconsistent, a surge current will be generated, and excessive reclosing surge current will affect the safe and stable operation of the distribution network. This article provides a detailed analysis of the causes of surge current generated during the circuit breaker reclosing process, and presents a simplified calculation method for the maximum surge current. The effectiveness of the surge current calculation method is demonstrated by building a simulation model on the MATLAB/Simulink platform; Based on this, the impact of closing surge current on system side current protection was analyzed, and the necessity of studying ways to reduce closing surge current was verified. At the same time, it provided a basis for evaluating the consumption capacity of distributed power sources in distribution networks.