摘要
随着直流输电技术的快速发展与应用,电网呈现越来越多的交直流并联运行局面,交直流系统的相互影响进一步增强。该文详细研究南方电网交直流并联电网的稳定特性,分析南方电网交流故障导致主网失稳和直流故障导致主网失稳的风险,阐述交直流系统相互影响导致复杂失稳现象的演变过程,分析云南电网与南网主网异步联网的必要性,并进一步探讨基于高压直流输电技术的异步联网方案,为电网的安全稳定运行提供技术支撑。
With the rapid development and application of HVDC transmission technology,more and more AC/DC hybrid power systems have been parallel,with the ever increasing coupling influence between AC system and DC system imposed.In this paper,the stability characteristics of AC/DC parallel power grid in CSG was analyzed in detail.Besides,the potential risks induced by both AC faults or DC faults that can lead to the instability of the main CSG grid have also been elaborated.Then the evolutionary process of complex instability caused by interaction of AC and DC power systems was investigated.Based on the above,the necessity of asynchronous interconnection between Yunnan Power Grid and the rest of CSG was illustrated.Finally,the asynchronous interconnection scheme based on HVDC transmission technology was discussed,which can provide technical support for safe and stable operation of AC/DC parallel power grids.
作者
饶宏
吴为
周保荣
洪潮
柳勇军
涂亮
吴小珊
RAO Hong;WU Wei;ZHOU Baorong;HONG Chao;LIU Yongjun;TU Liang;WU Xiaoshan(State Key Laboratory of High Voltage DC Transmission Technology(Electric Power Research Institute,CSG),Guangzhou 510663,Guangdong Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2020年第11期3470-3476,共7页
Proceedings of the CSEE
基金
国家重点研发计划项目(2016YFB0901000)。
关键词
交直流系统
交直流相互影响
异步联网
高压直流输电
AC/DC power system
AC/DC power system interaction
asynchronous interconnection
HVDC
