内蒙古电力技术2025，Vol.43Issue(6)：30-36,7.DOI:10.19929/j.cnki.nmgdljs.2025.0073
特高压直流接入蒙西地区电网后的故障影响分析及控制措施研究
Fault Impact Analysis and Control Measures Research After Integration of UHVDC into Power Grid in Mengxi Area
摘要
Abstract
In order to improve the stability level of the power grid in Mengxi area after the integration of three UHVDC transmission lines of Kubuqi north to Hebei,Kubuqi south to Shanghai and Tengger to Jiangxi,and to enhance the DC transmission capacity of new energy collection areas,on the one hand,based on the characteristics of high new energy penetration rate,large proportion of cross-regional DC power and close coupling between AC and DC in the power grid in Mengxi area in the future,the influence of UHVDC transmission projects on the stability characteristics of power grid is analyzed.On the other hand,aiming at the DC blocking fault,an optimized generator tripping control scheme suitable for the power grid in Mengxi area is proposed.The effects of different schemes on the frequency and transient and steady state voltage rise of the power grid is compared,and the impact of the energy storage configuration capacity on the frequency characteristics of the system under the short-term power surplus at the sending end is analyzed.At the same time,the influence of DC emergency support coordinated control strategy on the stability of the power grid in Mengxi area is studied.关键词
交直流混联系统/特高压直流/稳控策略/储能/直流紧急功率支援Key words
AC/DC hybrid system/UHVDC/stability control strategy/energy storage/emergency DC power support分类
信息技术与安全科学引用本文复制引用
GUO Jianhua,LIU Shichuan,MU Teng,Daerhan,LEI Ke,LIU Huiqiang..特高压直流接入蒙西地区电网后的故障影响分析及控制措施研究[J].内蒙古电力技术,2025,43(6):30-36,7.基金项目
国家重点研发计划项目"大规模可再生能源基地特高压多端直流输电外送关键技术"(2023YFB2405900) （2023YFB2405900）
内蒙古电力(集团)有限责任公司科技项目"双碳背景下内蒙古超高比例新能源大送端电力系统结构形态及演化路径研究"(2023-4-5) （集团）
