Critical issues in distribution system surge protection

作者: W.J. Ros

DOI: 10.1109/28.2878

关键词:

摘要: The past ten years have produced some dramatic advances in overvoltage protection for electricity distribution systems. Research into the nature of lightning-flash characteristics, especially characteristics arrester discharge currents, now permit a greater understanding magnitudes impulse voltages that impact system and its connected equipment. Zinc oxide use has emerged during this same time period as protective technology is unequaled ability to minimize voltage. Its improved make it requirement riser pole application, simple gapless structure makes ideal application within transformer tank. On other hand, significant cable failure problem surfaced with an alarming number underground residential (URD) failures occurring, which led premature replacement considerable amount cable. It concluded while causes are multiple, excessive voltage contributor requires evaluation available methodology can magnitude on circuits. >

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