中国电力2017，Vol.50Issue(5)：39-45,7.DOI:10.11930/j.issn.1004-9649.2017.05.039.07
统调动力源系统单相接地故障选线研究
Research on United Adjustment Power Source System Single Phase Ground Fault Line Selection
摘要
Abstract
The power plant auxiliary machine united adjustment power source system is non-utility frequency and small current grounding system.Conventional protection device cannot detect single phase grounding fault in the system correctly.Operating conditions of united adjustment power source system is analyzed,and minimum capacitive ground fault current value is calculated in single busbar low frequency operating condition.Based on calculation,technical requirements of non-utility frequency low current grounding fault line selection device is proposed.Then a high precision fault line selection device which adaptive to system frequency changes is developed.A special functionality simulation test circuit is also built to test developed device.The testing results show that proposed device satisfies design requirements,works well after commissioning and solves practical engineering problem.关键词
非工频/小电流接地/故障选线Key words
non-utility frequency/low current grounding/fault line selection分类
信息技术与安全科学引用本文复制引用
兀鹏越,焦尚彬,赵峰,寇水潮,师延金..统调动力源系统单相接地故障选线研究[J].中国电力,2017,50(5):39-45,7.基金项目
陕西省科技攻关项目(2017K18) （2017K18）
陕西省教育厅产业化项目(2017JG09) （2017JG09）
西安热工研究院研发基金资助项目(ZE-16-TYK01)This work is supported by Shaanxi Province Science and Technology Research Project (No.2017K18) （ZE-16-TYK01）
Shaanxi Provincial Department of Education Industrialization Project (No.2017JG09),Xi'an Thermal Power Research Institute Research Fund Project (No.ZE-16-TYK01). （No.2017JG09）
