CAJ | 학술논문

根据团林换流站电压突变量保护动作现场反馈的信息进行故障原因分析，判定为测量系统故障造成保护动作。基于直流电压信号测量传输回路和直流分压器的结构分析，指出了发生故障的最小区域。通过与换流站运行的控制保护设备完全相同的试验系统进行相关的验证，并进行 RTDS 仿真试验。结果表明，直流分压器测量回路故障造成保护动作，保护动作行为正确。最后，给出了解决问题的建议。
근거단림환류참전압돌변량보호동작현장반궤적신식진행고장원인분석，판정위측량계통고장조성보호동작。기우직류전압신호측량전수회로화직류분압기적결구분석，지출료발생고장적최소구역。통과여환류참운행적공제보호설비완전상동적시험계통진행상관적험증，병진행 RTDS 방진시험。결과표명，직류분압기측량회로고장조성보호동작，보호동작행위정학。최후，급출료해결문제적건의。
According to the site feedback information of undervoltage sensing protection at Tuanlin Converter Station, this paper analy-zes the protection fault, concluding that it is caused by the failure of measurement system. Based on the structure analysis of the DC voltage signal transmission-measurement circuits and DC voltage divider, the minimum area of failure is determined. The authentica-tion with a test system identical to the control and protection equipments in the converter station is carried out, and also the RTDS, and the results show that the the protection fault is due to the DC voltage divider measurement circuit failure, and the protection acts cor-rectly. Finally, the recommendations to solve the problem is provided.