摘要：
As an important part of transmission line protection device, distance protection has been widely applied in high voltage and ultra-high voltage power grid. However, the existence of transition resistance seriously threatens the correctness of distance protection action, which may cause mal-operation or miss operation easily. In the light of the existing research results, firstly, this paper emphasizes the classification, configuration, setting principles and the influence of transition resistance on the performance of distance protection. Secondly, it summarizes the current research achievements of impedance relay, distance relay and ranging protection with resistance to transition resistance and analyzes the problems that may be faced in practical application. Thirdly, it discusses the development trend of distance protection based on the current situation of power grid and electrical technology, which hope to provide a reference for further research on the resistance to transition resistance of distance protection.%距离保护作为输电线路保护的重要组成部分,在高压及超高压电网中获得了广泛应用.然而,故障时过渡电阻的存在严重威胁着距离保护动作正确性,易导致保护误动或拒动行为.结合现有研究成果,首先,着重阐述了距离保护分类、配置、整定原则,以及过渡电阻对其动作性能的影响.然后,全面总结了具有抗过渡电阻能力的阻抗继电器、距离继电器和测距式保护研究成果,分析了应用到实际电网中可能面临的问题.最后,结合电网现状和科学技术发展成果,展望了距离保护的发展方向,以期为距离保护抗过渡电阻能力的进一步研究提供参考.
