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首页> 外文期刊>IEE Proceedings. Part A >Monitoring particle concentrations produced by arcing in SF_e circuit breakers using a chromatic modulation probe
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Monitoring particle concentrations produced by arcing in SF_e circuit breakers using a chromatic modulation probe

机译:使用色度调制探针监控SF_e断路器中电弧产生的颗粒浓度

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摘要

An optical-fibre probe is described for monitoring the production and build-up of particulate material in high-voltage SF_6 circuit breakers, using the wavelength-dependent scattering of polychromatic light in conjunction with a chromatic modulation technique. It has been shown that the probe can be installed and routinely operated in a reliable manner within the tank of a 145kV/ 40kA circuit breaker during live arcing tests. Experimental results show that the severity and duration of arcing as well as the transient evolution of particle production and settling can be determined with the probe. As such, the results provide a means for tracking particulate conditions in a high-voltage circuit breaker with minimal intrusion into the circuit-breaker volume. It is concluded that the particulate mass per unit volume, formed by a single half cycle of arcing at the rated fault current, is only 0.1/100, of the total mass of SF_6 within the circuit breaker. The particulate material may remain in suspension within the circuit-breaker tank for approximately 30 minutes after the arcing event. The formation of a film of particles on the probe following settling may provide a means for determining the fault-current arcing history of an interrupter.
机译:描述了一种光纤探针,该光纤探针使用与波长相关的多色光散射和色调制技术,来监视高压SF_6断路器中颗粒材料的产生和堆积。结果表明,在带电电弧试验中,该探头可以可靠地安装在145kV / 40kA断路器的储罐中并按常规操作。实验结果表明,可以用探针确定电弧的严重程度和持续时间,以及颗粒产生和沉降的瞬时演变。这样,结果提供了一种以最小程度地侵入断路器体积来跟踪高压断路器中的颗粒状况的手段。得出的结论是,在额定故障电流下,单次电弧放电半个周期形成的每单位体积的微粒质量仅为断路器内SF_6总质量的0.1 / 100。电弧事件发生后,颗粒材料可能会悬浮在断路器箱内约30分钟。沉降之后在探针上形成颗粒膜可以提供一种确定断续器故障电流电弧放电历史的手段。

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