中国电机工程学报2017，Vol.37Issue(5)：1373-1378,6.DOI:10.13334/j.0258-8013.pcsee.152712
抑制云广特高压直流孤岛运行甩负荷过电压的控制逻辑优化研究
Research on the UHVDC Control Optimization Schemes for Mitigating Temporary Overvoltage When Shedding Load in Islanded Operation Mode
摘要
Abstract
The level of fundamental frequency temporary overvoltage mathematical equation was derived for severe overvoltage problem of Yunnan-Guangdong UHVDC load shedding in islanded operation mode.The variation law of the overvoltage times in different effective short-circuit ratios (ESCR),and the influence of the power drop rate on the voltage variation under different ESCR conditions were analyzed.Blocking sequence control logic in pole control part and VDCL control logic optimization schemes based on the existing system were proposed.Verification simulation studies were carried out on the grid-unit coordination control real time simulation platform which connected with the real replicas of UHVDC control protection system and generator controls.The simulation results proved the effectiveness of the optimization schemes.关键词
特高压直流/过电压/有效短路比/控制逻辑优化Key words
ultra-HVDC/temporary overvoltage/effective short-circuit ratios/control optimization分类
信息技术与安全科学引用本文复制引用
李伟,肖湘宁,郭琦..抑制云广特高压直流孤岛运行甩负荷过电压的控制逻辑优化研究[J].中国电机工程学报,2017,37(5):1373-1378,6.基金项目
中国南方电网有限责任公司重点科技项目(180000KK52140012).Key science and technology project of China Southern Power Grid Co.(180000KK52140012). （180000KK52140012）
