CAJ | 학술논문

提出了一种可对运行中的断路器实时测量其接触电阻的新方法。通过两个电压互感器采集断路器两端对地电压，求得断路器两端的电压差，同时测得流过断路器的电流，根据欧姆定律即可得接触电阻。分析表明，该方法可在保证测量系统与高压隔离的前提下，实时带电测量断路器的接触电阻。对预防断路器的安全事故，保证断路器可靠运行具有重要意义。
제출료일충가대운행중적단로기실시측량기접촉전조적신방법。통과량개전압호감기채집단로기량단대지전압，구득단로기량단적전압차，동시측득류과단로기적전류，근거구모정률즉가득접촉전조。분석표명，해방법가재보증측량계통여고압격리적전제하，실시대전측량단로기적접촉전조。대예방단로기적안전사고，보증단로기가고운행구유중요의의。
This paper presented a new real-time measuring method for the contact resistance of the operated circuit breakers. A pair of potential transformer worked in parallel to measure indirectly the voltage difference on the two terminals of the circuit breaker, while the currents lfowing through circuit breakers were measured by current transformers. The result of contact resistance could be obtained based on Ohm Law. The analysis shows that this method could not only guarantee the isolation between control system and strong current, but also measure the contact resistance in real time, which would effectively prevent circuit breakers accidents.