摘要
相对比于交流输电系统,高压直流输电系统以其独特的优越性在我国及全世界范围内都得到了较快的发展和应用。但随着该系统的大量投入运行与快速发展,许多亟待解决的问题也在实际工程应用中凸显。高压直流输电系统的输电线路较长,增加了线路出现故障的几率,从而降低了电网运行的安全性和可靠性。因此提高直流输电线路运行的安全性与可靠性对于整个电网的安全稳定运行有着十分重要的意义。本文通过将现有行波保护方法的优缺点进行比较,结合实际工程应用中存在的问题,提出一种新的基于HHT的行波保护判据方法,为进一步研究HVDC线路行波保护提供了理论依据。
Compared to AC transmission system, HVDC transmission system has been relatively rapid development and application in the world and within our country With its unique advantages. However, due to with a large number of the system into operation and the rapid development, many problems need to be solved in practical engineering applications are also highlighted. Since HVDC transmission line is longer, it increases the probability of line failure, thereby reducing the power grid safety and reliability. Therefore, to improve the safety and reliability of operation of HVDC system has very important significance for security and stability of the entire grid. This paper compares the existing advantages and disadvantages of traveling wave protection methods and problems in the application of practical engineering, proposes a new method of traveling wave protection based on HHT, and provides a theoretical basis for further research of HVDC transmission line traveling wave protection.
出处
《电测与仪表》
北大核心
2012年第6期1-4,14,共5页
Electrical Measurement & Instrumentation
