(超)高压输电线路故障选相现状及其发展

Current status and development of fault phase selection of (E)HV transmission lines

故障选相是(超)高压输电线路继电保护中的一个关键环节,其快速准确地选相对于确保输电线路安全和电力系统稳定有着积极意义。国内外有关学者对此进行了广泛而深入的研究,提出了大量故障选相原理和方法。对不同选相元件的基本原理做了概要介绍,在此基础上分析了目前故障选相尚存在的问题。最后,结合新技术在电力系统中的应用,探讨了故障选相元件进一步的研究方向和发展前景。

Fault phase selection is a key procedure in relay protection of (E)HV transmission lines.The fast and accurate fault phase identification has an important meaning for the safety of transmission lines and stability of power system. Comprehensive and further researches have been conducted at home and abroad,and great principles and methods of fault phase selection have been presented. The principles of different fault phase selectors are introduced briefly, based on which the problems existing in the field are analysed.In the end,combined with new technology applications in power system,the research orientation and further development of fault phase selector are discussed.