CAJ | 학술논문

直流熔断器进行大短路电流分断试验的成本很高,制约了高分断能力直流熔断器的发展.根据直流熔断器的特性提出了保持试验一致性的三个等效条件:弧前时间一致、燃弧能量一致、恢复电压一致,据此提出了两种等效试验方法.方法一适当提高直接试验回路的电阻值,方法二采用电容器组作为电源,通过合理的参数设置可保证两种方法与直接试验具有较高的等效性,同时又降低了试验成本.讨论了两种方法的参数设置和等效性,最后以额定1200 V,1250 A及额定1200 V,200 A两种直流熔断器进行110 kA短路分断试验为例,对比了两种等效试验方法和直接试验的结果,验证了所提方法的有效性.该方法可参考应用于直流限流断路器的短路分断试验.
직류용단기진행대단로전류분단시험적성본흔고,제약료고분단능력직류용단기적발전.근거직류용단기적특성제출료보지시험일치성적삼개등효조건:호전시간일치、연호능량일치、회복전압일치,거차제출료량충등효시험방법.방법일괄당제고직접시험회로적전조치,방법이채용전용기조작위전원,통과합리적삼수설치가보증량충방법여직접시험구유교고적등효성,동시우강저료시험성본.토론료량충방법적삼수설치화등효성,최후이액정1200 V,1250 A급액정1200 V,200 A량충직류용단기진행110 kA단로분단시험위례,대비료량충등효시험방법화직접시험적결과,험증료소제방법적유효성.해방법가삼고응용우직류한류단로기적단로분단시험.
As for DC fuses, power capacity of the test device is heavily demanded in high current short-circuit tests, which constrains the development of high-breaking-capacity DC fuses. According to the characteristics of the DC fuses, three equivalent conditions are introduced:similar pre-arcing time, similar arcing energy, and similar recovery voltage. Meanwhile, two equivalent test methods are presented. The first method is to increase the resistance value of the direct test circuit, and the second method is to employ a bank of capacitors as the power source. By means of setting rational parameters for the proposed methods, a good equivalence to direct test and low cost can be obtained. Furthermore, the equivalence and its parameters setup of the proposed methods are discussed and illustrated. Finally, the proposed equivalent test methods and the direct test are compared through 110 kA short-circuit test, with DC fuses rated 1200 V/1250 A and 1200 V/200 A, which further verify the effectiveness of the proposed methods. The two equivalent test methods can be applied in short-circuit test of the DC current limiting circuit breakers. This work is supported by National Natural Science Foundation of China (No. 51177169).