中国电力2018，Vol.51Issue(4)：7-14,8.DOI:10.11930/j.issn.1004-9649.201707130
±800 kV雁淮特高压直流送端电网安全稳定特性及控制策略
Security Stability Analysis and Control Strategy of Sending-End Power Grid of ±800 kV Yan-Huai UHVDC
摘要
Abstract
Security and stability characteristics of sending-end grid of Yan-Huai UHVDC is analyzed in detail. The UHVDC system is a wind-thermal-bundled system without support of thermal power generation. The influence of different connection methods on transient voltage of wind generator after one-time commutation failure of Yan-Huai UHVDC is analyzed. Generator tripping control strategy is proposed with consideration of power transfer and voltage stability in areas close to converter station and north Shanxi area. A deployment scheme of stability control devices is designed to realize cooperative control of tripping generators in different areas. Considering different spare levels of generators, pre-control operation powers of Yan-Huai UHVDC are proposed after analyzing coupling characteristic of stability control systems between sending-end system of Yan-Huai UHVDC and North Shanxi. Risk of generator tripping due to insufficient capacity is quantified after success operation of two sets of stability control device. Simulation results and analysis based on real-sized power grid in China prove rationality and effectiveness of proposed control strategies. The simulation and analysis result provides references for stability analysis and control strategy development of the similar sending-end system of UHVDC projects.关键词
风火打捆/特高压直流/暂态过电压/控制策略/稳控装置Key words
wind-thermal-bundled/UHVDC/transient voltage/control strategy/security and stability control device分类
信息技术与安全科学引用本文复制引用
潘捷,郑惠萍,张红丽,王超,薛志伟,刘福锁,吴晨曦..±800 kV雁淮特高压直流送端电网安全稳定特性及控制策略[J].中国电力,2018,51(4):7-14,8.基金项目
国家电网公司科技项目(特高压交直流混联电网量化分析和第三道防线协调控制技术研究).This work is supported by Science and Technology Project of State Grid Corporation of China(Research on Quantitative Analysis of UHV AC and DC Hybrid Power Grid and Third Line Control Coordinated Control Technology). （特高压交直流混联电网量化分析和第三道防线协调控制技术研究）
