现代电力2024，Vol.41Issue(1)：55-64,10.DOI:10.19725/j.cnki.1007-2322.2022.0166
基于可控串联电抗的新能源送出线路故障性质识别方法
Fault Identification Method of New Energy Transmission Line Based on Controllable Series Reactance
摘要
Abstract
For new energy transmission lines without shunt re-actors,whether the fault nature can be correctly distinguished is the top priority to ensure the safe and reliable operation of the new energy system.In order to reduce the impact of new en-ergy transmission line faults on power equipment and systems,improve the success rate of reclosers,and reduce the problem of new energy power generation systems off the grid.A new fault identification method based on controllable series reactance and current information was proposed.When transmission line is fault,serial controllable current limiting reactor is designed,come controlled reactance to use when fault phase trip occurs.Based on the small current difference between instantaneous fault and permanent fault of the system in reactance series line,the comparison criterion of current mutation quantity was es-tablished to determine the time when the fault arc goes out,and a new fault property identification strategy for new energy sta-tion transmission line was constructed.The identification res-ults are fast and reliable,and it can effectively improve the line coincidence rate in the new energy station transmission line project.关键词
新能源送出线/可控串联电抗/瞬时性故障/永久性故障/熄弧时刻判定Key words
new energy transmission line/controllable series reactance/instantaneous fault/permanent fault/arc extin-guishing determination分类
信息技术与安全科学引用本文复制引用
杨宏宇,李振兴,袁超,刘亚南,唐一铭,张萌萌..基于可控串联电抗的新能源送出线路故障性质识别方法[J].现代电力,2024,41(1):55-64,10.基金项目
国家自然科学基金项目(52077120). Project Supported by National Natural Science Foundation of China(52077120). 感谢江苏方天电力技术有限公司基金资助项目(KJ202113)对本文的大力支持,谨此深表感谢. （52077120）
