探究超高压输电线路继电保护的方法

摘要

智能电网迅猛发展带动了电力系统的高速发展。近年来，电力系统对超高压线路的需求量愈来愈大。超高压线路对电力环境、保护手段具有很高的要求。当前，我国超高压输电线路继电保护中存有很多不足之处，严重影响着电力系统的安全、稳定运行。如何加强超高压输电线路继电保护成为亟待解决的重要课题。文章结合相关文献资料，首先分析了超高压输电线路继电保护的特点及要求，而后在此基础上，从基于HHT的电力信号处理办法、电流差动保护、电流保护性能、基于人工神经网络的自适应电流保护四个方面对超高压输电线路继电保护的方法进行了探究，以期对确保我国电网正常运行有所帮助。%The rapid development of smart grid,led to the rapid development of power system.In recent years,the increasing demand of ultrahigh pressure line of power system.Ehv lines for electricity environment,the protection has very high requirements.At present,our country in the ehv transmission line relay protection has many deficiencies,seriously affecting the safe and stable operation of power system.How to strengthen the ehv transmission line relay protection has become an important subject to be solved.Combining with the related literature,firstly analyzes the characteristics and requirements of ehv transmission line relay protection,and then on this basis,from the power signal processing method based on HHT,current differential protection and current protection performance,based on artificial neural network adaptive current protection four aspects of ehv transmission line relay protection method has carried on the exploration, in order to help to ensure the normal operation of power grid in our country.