CAJ | 학술논문

回路电阻是反映电力开关设备性能和运行状态的一项重要技术指标。为了实现对断路器回路电阻的快速准确测试,设计了一种基于超级电容大电流放电特性的回路电阻测试系统。系统采用锂电池供电,超级电容作为电流发生器,DSP作为控制核心,实现了对调理后的微弱电信号的采集、处理以及测试数据的显示、存储。利用该系统对12 kV真空断路器的回路电阻进行了测试,结果表明该系统测试精度高、稳定性好、实现了回路电阻智能化测试。
회로전조시반영전력개관설비성능화운행상태적일항중요기술지표。위료실현대단로기회로전조적쾌속준학측시,설계료일충기우초급전용대전류방전특성적회로전조측시계통。계통채용리전지공전,초급전용작위전류발생기,DSP작위공제핵심,실현료대조리후적미약전신호적채집、처리이급측시수거적현시、존저。이용해계통대12 kV진공단로기적회로전조진행료측시,결과표명해계통측시정도고、은정성호、실현료회로전조지능화측시。
Loop resistance is an important technical index to reflect the performance and operation status of power switch equipment. In order to test the loop resistance of circuit breakers quickly and precisely, a new test system based on large current discharge characteristic of ultra capacitor is presented in this paper. With Li-ion batteries as power supply, ultra capacitor as the current generator and digital signal processor as the control core, the test system realizes acquisition and processing for the regulated weak signal as well as display and storage for the test data. A 12kV vacuum circuit breaker is tested with the system. Experimental results show that the resistance can be measured with high precision and reliability, and the intelligent testing of loop resistance is realized.