超高压直流输电系统关键技术探讨

Discussion on Key Technologies of UHV DC Transmission System

近年来,超高压直流输电系统有了很大的发展,并在巴基斯坦默拉直流等海外项目中应用。文章根据国内外关于直流输电系统故障诊断的文献,分析了直流输电系统的故障类型和特点,并将故障仿真应用于直流输电系统的故障诊断。

UHV DC transmission is a new technology that has emerged in recent years.DC transmission has the advantages of large transmission capacity,low line cost,fl exible control,transmission power only including active power,and no stability problems.It is particularly suitable for long-distance and large-capacity power transmission.In recent years,the ultra-high voltage DC transmission system has been greatly developed and is applied in overseas projects such as Pakistan’s Murah DC.This paper analyzes the fault types and characteristics of the DC transmission system based on the domestic and foreign literature on the fault diagnosis of the DC transmission system,and applies the fault simulation to the fault diagnosis of the DC transmission system.