含大规模电力电子装备的电力系统故障分析与保护综述

摘要

大规模电力电子装备接入使电力系统故障特征不仅受拓扑结构影响,而且受控制策略的影响,导致基于同步机故障特征的常规保护方法对含电力电子装备电力系统存在适应性问题.文中综述了国内外含新能源电源、高压直流、柔性直流的电力系统故障建模、故障特征分析及继电保护的研究进展,在此基础上对含大规模电力电子装备的电力系统故障特征分析方法提出思考,对保护原理的发展趋势进行分析总结.最后,提出考虑协调控制与保护的建议与设想,并探讨了进一步的研究方向.%The existence of large-scale power electronic equipments will lead that the fault characteristics of the system are not only affected by the topology, but also affected by the control strategy.This paper discusses the modeling method first.Based on the fault characteristics and new protection principles of the classify study, the thinking of methods of analyzing the fault characteristic of power system with large power electronic equipments are put forward, the development trend of new protection principles is summarized.Finally, in view of the importance of converter control strategy in the system, the ideas of coordinating control and protection are suggested.