内蒙古电力技术2024，Vol.42Issue(4)：80-86,7.DOI:10.19929/j.cnki.nmgdljs.2024.0057
分布式调相机对大规模新能源直流送端系统的稳定特性影响
Impact of Distributed Regulator on Stability Characteristics of Large-Scale New Energy DC Sending-End System
摘要
Abstract
In response to the transient overvoltage and frequency stability issues caused by typical HVDC faults in an HVDC sending-end system with large-scale new energy,the author makes an analysis of the impact of distributed synchronous condensers connecting to the new energy stations on the stability characteristics of the system.Firstly,the principles of reactive power regulation and the moment of inertia of distributed synchronous condensers are introduced.Secondly,the principle of overvoltage protection for new energy units and the causes of transient overvoltage caused by typical faults in the HVDC sending-end system are introduced,and the impact of distributed synchronous condensers on system strength,i.e.DC short circuit ratio,transient overvoltage and dynamic frequency stability level in the HVDC sending-end system of new energy is analyzed.Finally,the role of distributed synchronous condensers in enhancing the system strength,transient voltage level,and frequency stability of the HVDC transmission sending-end system is verified through time-domain simulation.关键词
分布式调相机/直流短路比/暂态过电压/频率稳定Key words
distributed synchronous condensers/DC short-circuit ratio/transient overvoltage/frequency stabilization分类
动力与电气工程引用本文复制引用
闫桂红,李丹丹,刘小恺,邢华栋,慕腾,张爱军..分布式调相机对大规模新能源直流送端系统的稳定特性影响[J].内蒙古电力技术,2024,42(4):80-86,7.基金项目
内蒙古自治区"双碳"科技创新重大示范工程"揭榜挂帅"项目"新型电力系统'网源荷储'关键调度技术研究及其示范应用"(2022JBGS0044) （2022JBGS0044）
内蒙古电力(集团)有限责任公司科技项目"分布式调相机群对蒙西高比例新能源电网外送消纳能力影响研究"(2023-5-29) （集团）
