CAJ | 학술논문

详细分析了继电保护状态检修的关键技术，并对交流二次回路、开关量输入二次回路、断路器操作二次回路等继电保护相关重要二次回路的状态在线检测方法进行了研究。对于交流二次回路的在线状态检测，提出了对其交流输入量及对比参照量进行分析的解决方案，并针对单重化、双重化配置的继电保护装置，分别提出了交流二次回路在线状态检测的具体方案；对于开关量输入二次回路的在线状态检测，提出了利用微机保护对某些类型的开入量进行异常检测的方案；对于断路器二次操作回路的在线状态检测，设计了具体的状态检测电路，详细分析了基于双继电器接点串联方法进行跳合闸出口接点可靠性检测的方法。
상세분석료계전보호상태검수적관건기술，병대교류이차회로、개관량수입이차회로、단로기조작이차회로등계전보호상관중요이차회로적상태재선검측방법진행료연구。대우교류이차회로적재선상태검측，제출료대기교류수입량급대비삼조량진행분석적해결방안，병침대단중화、쌍중화배치적계전보호장치，분별제출료교류이차회로재선상태검측적구체방안；대우개관량수입이차회로적재선상태검측，제출료이용미궤보호대모사류형적개입량진행이상검측적방안；대우단로기이차조작회로적재선상태검측，설계료구체적상태검측전로，상세분석료기우쌍계전기접점천련방법진행도합갑출구접점가고성검측적방법。
The critical technology of condition-based maintenance of relay protection is analyzed,and the on-line state detection method of main relay protection secondary circuits such as AC secondary circuit,switching value input secondary circuit and breaker operating secondary circuit are studied.For secondary AC circuit on-line status detection,a solution of making comparative analysis between its AC input value and reference value is proposed.Specific on-line state detection schemes each for the single and dual configured relay protection devices are proposed,respectively.As for on-line status detection schemes of switching value input secondary circuit,an abnormal status detecting scheme using microcomputer is proposed for certain types of switching value input secondary circuit.With respect to on-line status detection of the breaker operating secondary circuit,a detailed state detecting circuit is designed,and the proposed switch on/off export contact reliability detecting method based on double relay contacts in series is analyzed at length.The proposed method is simple and practical,and can be better to realize the real-time on-line detection of switch on/off export contact action. This work is supported by Special Fund of Key Science and Technology Proj ects of State Grid Corporation of China.