配电网单相接地故障有源消弧技术综述

多种形式的新能源、大量电力电子用户等越来越多的接入配电网是必然的发展趋势，这可能会导致接地故障电流中的无功分量、有功分量及谐波含量越来越大。采用消弧线圈的无源消弧技术依旧存在单相接地故障残流的无功分量、有功分量和谐波分量较大等问题。采用外加注入主动干预方式的有源消弧技术成为解决此类问题的有效手段。本文对配电网单相接地故障有源消弧技术的研究现状进行总结综述，主要阐述了有源消弧装置结构和控制算法两部分内容。首先，从成本、优缺点、连接方式等方面对消弧装置硬件结构进行分析。其次，将电压消弧算法、电流消弧算法、综合消弧算法的优缺点进行对比研究。最后从有源消弧技术的硬件结构和控制算法两个方面进行了展望，并给出了后续研究可能存在的问题以及可能的研究方向。

Review of single-phase grounding fault active arc-suppression technologies in distribution network

Various forms of new energy, a large number of power electronic users are more and more connected to the distribution network, which is the irresistible development trend of distribution network.This will lead to a large change of the single-phase grounding fault current level of distribution network. There are more and more reactive, active and harmonic components in the single-phase grounding fault current. The arc-suppression coil can only compensate the reactive power component, and the reactive power component can not be fully compensated because it usually runs in the over compensation state.The passive arc-suppression technology with arc-suppression coil still has the problem of large reactive component, active component and harmonic component in the single-phase grounding fault residual current. The active arc-suppression technology with active intervention by external injection is an effective way to solve such problems.In this paper, the structures and principles of active arc-suppression technologies are summarized according to the existing research, and some conclusions are given based on the actual situation of distribution network and the future research direction.