高压电器2018，Vol.54Issue(5)：204-209,216,7.DOI:10.13296/j.1001-1609.hva.2018.05.032
海上风电场电缆集电网不对称短路暂态过电压仿真分析
Simulation Analysis on Transient Overvoltage of Asymmetric Short Circuit in Cable Collector Networks of Offshore Wind Farm
摘要
Abstract
In order to research the high transient overvoltage amplitude which caused by asymmetrical short circuit in large-scale offshore wind farm cable network, this paper builds a 300 MW offshore wind farm transient calculation model using PSCAD/EMTDC electromagnetic transient simulation software. The influence of fault point, location of transformer, number of single feeder fan and feeders on transient overvoltage and the overvoltage produced by failure sub-gate are emphatically studied. The simulation results show that transient overvoltage caused by single-phase short-circuit is greater than over-voltage caused by tripping after the fault, and the maximum amplitude can be up to 2. 5 p. u.. On this basis, this paper further studies overvoltage suppression measures owing to single-phase short-circuit fault, when the arrester and RC protector coordinately applied on the high-voltage side of motor-side transformer, overvolt-age can be suppressed to 2. 24 p. u., this will provide a certain reference for internal electrical system design of off-shore wind farm and insulation design of fan-side transformer.关键词
海上风电场/不对称短路/暂态过电压/电磁暂态仿真/避雷器/RC阻容保护器Key words
offshore wind farm/asymmetrical short circuit/transient overvoltage/electromagnetic transient simulation/arrester/RC protector引用本文复制引用
郭亚勋,刘刚,梁嘉浩,周露,江晓锋,许育炼,张景新..海上风电场电缆集电网不对称短路暂态过电压仿真分析[J].高压电器,2018,54(5):204-209,216,7.基金项目
国家自然科学基金资助项目(51477054) （51477054）
广东省科技计划资助研究项目(2013B010405002).Project Supported by National Natural Science Foundation of China(51477054),Science and Technology Planning Project of Guangdong Province(2013B010405002). （2013B010405002）
