CAJ | 학술논문

对带分闸电阻的1100kV断路器的失步故障开断的过程进行研究。由于分闸电阻的存在，在开断过程中不可避免的改变了回路的特性参数，使得主辅断口承受了不同的瞬态恢复电压（TRV），通过等效模拟电路建立数学模型进行分析计算及PSCAD程序仿真，并同实际电网参数的模拟计算进行比较，结果表明：如果电网的实际参数较标准参数而言，在失步电流较小、上升率较低的情况下，对于带分闸电阻的断路器，在开断失步故障的条件下，辅助断口所要承受的TRV参数甚至可能比无分闸电阻断路器所承受的TRV还要苛刻，故需根据电网特性来选择是否使用带分闸电阻的断路器。
대대분갑전조적1100kV단로기적실보고장개단적과정진행연구。유우분갑전조적존재，재개단과정중불가피면적개변료회로적특성삼수，사득주보단구승수료불동적순태회복전압（TRV），통과등효모의전로건립수학모형진행분석계산급PSCAD정서방진，병동실제전망삼수적모의계산진행비교，결과표명：여과전망적실제삼수교표준삼수이언，재실보전류교소、상승솔교저적정황하，대우대분갑전조적단로기，재개단실보고장적조건하，보조단구소요승수적TRV삼수심지가능비무분갑전조단로기소승수적TRV환요가각，고수근거전망특성래선택시부사용대분갑전조적단로기。
Study was carried out for process of out-of-phase fault of 1 100 kV circuit breaker＇s break-off with opening resistance. Due to the existing of opening resistance, in break-off process the characteristics parameters of feedback circuit were unavoidably changed, so as to make primary and auxiliary fractures to bear different transient recovery voltage （TRV）. The math model was built via the equal effect analog circuit. This paper analyzed PSCAD program simulation and calculated the parameters of the model, comparing with analog calculation of actual grid parameters. The result shows that so far as actual parameters of grid compared with standard parameters, under the conditions of break-off out-of-phase fault with smaller out-of-phase current, lower rising rate, as for circuit breakers with opening resistance, the auxiliary fracture born TRV parameters would be even more strict than circuit breakers without opening resistance, therefore there is a need to select circuit breakers with opening resistance according to grid characteristics.