中国电机工程学报2025，Vol.45Issue(13)：4956-4966,中插2,12.DOI:10.13334/j.0258-8013.pcsee.232695
规模化新能源场站接入弱电网场景的故障暂态电压支撑控制
Fault Transient Voltage Support Control for Large-scale Renewable Power Plant Connecting to Weak Grid
摘要
Abstract
In the scenario of large-scale renewable power plant(RPP)connecting to weak grid,the opposite weak grid has difficulties in providing voltage support capacity during faults,leading to off-grid of RPP and causing safety problems of the whole system.Therefore,large-scale RPP must possess fault transient voltage support capability.However,existing methods ensure only the self-protection of RPP,without guaranteeing power grid security.To address this limitation,a novel fault transient voltage support control strategy based on extended controllable boundary is proposed.The fault disturbance propagation is considered to build the extended controllable boundary,and the current command values are calculated through the grouping discrete mapping matrix.Referring to a typical scenario in Xinjiang,China,a simulation example is constructed in PSCAD.The validation results show that the RPP can safely,exhaustively,rapidly and flexibly provide transient voltage support capacity.When the voltage at point of common coupling(PCC)sags is higher than 0.4 pu,the system achieves at least 40%greater improvement compared to the current national standard.关键词
新能源场站/故障可控边界/分群离散映射矩阵/故障暂态电压支撑控制Key words
renewable power plant/controllable boundaries/grouping discrete mapping matrix/fault transient voltage support分类
信息技术与安全科学引用本文复制引用
张旸,贾科,毕天姝,蒋欣颖,刘芸..规模化新能源场站接入弱电网场景的故障暂态电压支撑控制[J].中国电机工程学报,2025,45(13):4956-4966,中插2,12.基金项目
国家重点研发计划项目(2022YFB4202302). National Key R&D Program of China(2022YFB4202302). （2022YFB4202302）
