摘要
在电力系统中,高压直流输电(HVDC)系统具有造价低、损耗小、潮流控制灵活等优势。文章详细介绍了HVDC系统的构成、工作原理以及具体的应用问题,建立了仿真模型并分析了接地短路和断线故障对系统的影响。仿真结果显示,系统在瞬时性故障结束后能够通过定电压和定电流控制实现自恢复,但在毫秒级故障中的稳定性较弱,可能导致失稳现象。文章的研究为HVDC系统在实际应用中的可靠性提供了一定的参考。
In the power system,high voltage direct current transmission(HVDC)system has the advantages of low cost,low loss,and flexible power flow control.The article provides a detailed introduction to the composition,working principle,and specific application issues of HVDC systems.A simulation model was established and the impact of grounding short circuit and disconnection faults on the system was analyzed.The simulation results show that the system can achieve self recovery through constant voltage and current control after transient faults,but its stability is weak in millisecond level faults,which may lead to instability.The research in this article provides a certain reference for the reliability of HVDC systems in practical applications.
作者
周楠
ZHOU Nan(State Grid Siping Power Supply Company,Siping,Jilin 136000,China)
作者简介
周楠(1996-),本科,助理工程师,研究方向:采集运维。
