CAJ | 학술논문

介绍了分级式可控高压并联电抗器的原理结构，分析了控制部分短路故障对各控制支路的电流的影响，得出短路点所在控制支路及下级控制支路电流发生显著变化的结论，并提出如下保护方案：通过实时采集电流计算流过各辅助电抗器的电流值，分析以辅助电抗器的理论电流值作为基础的故障电流定值制定方案，两者比较构成故障电流判据，实现对故障进行判断并判别故障位置的作用。RTDS 试验结果反映了此保护具有以下特点：不仅能对控制部分的短路故障进行快速判断，而且能对短路故障发生的位置进行区分，故障判据灵敏、短路故障覆盖范围广且定值易整定。
개소료분급식가공고압병련전항기적원리결구，분석료공제부분단로고장대각공제지로적전류적영향，득출단로점소재공제지로급하급공제지로전류발생현저변화적결론，병제출여하보호방안：통과실시채집전류계산류과각보조전항기적전류치，분석이보조전항기적이론전류치작위기출적고장전류정치제정방안，량자비교구성고장전류판거，실현대고장진행판단병판별고장위치적작용。RTDS 시험결과반영료차보호구유이하특점：불부능대공제부분적단로고장진행쾌속판단，이차능대단로고장발생적위치진행구분，고장판거령민、단로고장복개범위엄차정치역정정。
This paper describes the basic principle of step controlled high-voltage shunt reactor,analyzes the influence on each control branch when short-circuit fault occurs,and concludes that the current of the control branches on the short circuit point and lower short circuit point decreases significantly.So,a protection scheme is proposed as follows:first,the real-time current of all auxiliary reactors is calculated,then the constant value setting methods of different auxiliary reactors and different capacities are analyzed based on the theoretical current value of auxiliary reactors,the two should be compared to become the current criterion for distinguishing fault and its location.Real-time digital simulator (RTDS) experiment results show the protection scheme has the following features:quick judgment,accurate positioning,sensitive current criterion,wide scope of coverage and easy setting of constant value.