CAJ | 학술논문

介绍了电流对冲法在直流断路器可靠开断方面的应用,分析了电流对冲法的工作原理和试验过程中遇到的技术问题,通过高参数晶闸管器件、饱和电抗器和同步操作机构的配合使用,实现了直流断路器精确、可靠的开断,结果表明:通过控制同步操作机构和触发晶闸管器件来精确把握开断过程中两个回路的对冲点是关键,电流对冲法充分利用了晶闸管器件的优点,保证了整个开断过程的精确性;饱和电抗器有效抑制了对冲电流过零时的di/dt和反峰电压的增长,保护了晶闸管器件;整个回路造价经济,很大程度上弥补了传统试验方法中的不足.
개소료전류대충법재직류단로기가고개단방면적응용,분석료전류대충법적공작원리화시험과정중우도적기술문제,통과고삼수정갑관기건、포화전항기화동보조작궤구적배합사용,실현료직류단로기정학、가고적개단,결과표명:통과공제동보조작궤구화촉발정갑관기건래정학파악개단과정중량개회로적대충점시관건,전류대충법충분이용료정갑관기건적우점,보증료정개개단과정적정학성;포화전항기유효억제료대충전류과령시적di/dt화반봉전압적증장,보호료정갑관기건;정개회로조개경제,흔대정도상미보료전통시험방법중적불족.
Introduction was made to the application of the current hedge method in the reliable interruption of direct current (DC) circuit breakers, and analysis was made to the operating principle of the current hedge method and the technical problems in the test process. Through the co-use of the thyristor devices with high parameters, saturated reactors and synchronous operating mechanism, the reliable and accurate interruption of DC circuit breakers were achieved. The result shows that the key point is how to accurately seize the hedge point of two circuits in the interruption process by controlling the synchronous operating mechanism and trigger thy-ristor devices. The current hedge method takes full advantage of the thyristor devices, ensuring the accuracy of the whole interruption process. The di/dt of hedge current at current zero and the rising amplitude of peak reverse voltage have been suppressed effectively by saturated reactors, and the thyristor devices have also been protected. The whole circuit costs economically and largely make up for the shortcomings of the traditional methods.