一种高压配电网故障自愈技术的仿真研究

A Simulation Study of Fault Self-healing Technology for High Voltage Distribution Network

在高压配电网系统中电压源型换流器高压直流输电技术(VSC-HVDC)故障自愈往往受诸多因素的影响,如逆变器的无功补偿特性和DC控制器的动态性能。论文将PSCAD/EMTDC仿真工具用于VSC-HVDC的不同无功补偿装置动态自愈性能研究中,分析了三相接地故障、单相接地故障和三相断相故障中固定电容器(FC)、静止无功补偿器(SVC)和静止同步补偿器(STATCOM)的故障自愈特性,结果表明:由于SVC对AC的应用,自愈过程将减缓由于对的应用交流系统强度的负面影响,而STATCOM在DC功率和电压自愈能力上对提高配电网的自愈性能优于其他补偿设备。

In HV distribution network,voltage source converter HVDC Transmission Technology（VSC-HVDC）self healing is often influenced by many factors,such as reactive power compensation of inverter and dynamic performance of DC controller.This paper will study the self-healing properties of PSCAD/EMTDC simulation tools for VSC-HVDC dynamic reactive power compensation device,analyzes the fixed capacitor three-phase grounding fault of single-phase grounding fault and three-phase open phase fault（FC）and static var compensator（SVC）and static synchronous compensator（STATCOM）fault self-healing characteristics,results show that：due to the application of SVC to AC,will slow the healing process due to the negative impact of the application of AC system strength,STATCOM and DC in power and voltage self-healing ability to improve the self-healing performance is better than the other compensation device of distribution network.