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首页> 外文会议>Pulp and Paper Industry Technical Conference, 2009. PPIC '09 >Calculating incident energy released with varying ground fault magnitudes on solidly grounded systems
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Calculating incident energy released with varying ground fault magnitudes on solidly grounded systems

机译：计算牢固接地系统上接地故障幅度不同时释放的入射能量

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摘要

The IEEE standard 1584-2002 is the recognized standard regarding the calculation of incident energy output from an alternating-current three-phase arcing fault. While that standard does not provide incident energy calculations for the much more common single-phase-to-ground fault, it explains that the expectation is that such a ground fault will either self-extinguish or else will escalate into a 3-phase fault. If the fault escalates, the three-phase calculations can be used. The amount of time the arc burns as a single phase fault before escalation isn't defined, but a reference document used by 1584 defines this escalation time as one to two cycles. No attempt is made to calculate the incident energy released during this escalation period. While exact answers to the question of how much additional energy would be released are best answered through additional testing, this paper attempts to bracket likely high and low ranges of incident energy that could be released from an arcing single-phase to ground fault prior to escalation into a three-phase fault. As this paper only provides a theoretical basis for the calculation of additional energy released from arcing ground faults prior to escalation, it is the opinion of the author that future standards should include testing of incident energy released from faults that begin as low level arcing ground faults.
机译：IEEE标准1584-2002是关于计算交流三相电弧故障产生的入射能量的公认标准。尽管该标准未提供更常见的单相接地故障的入射能量计算，但它解释说，人们期望这样的接地故障会自行熄灭或升级为三相故障。如果故障升级，则可以使用三相计算。尚未确定在升级之前电弧作为单相故障的燃烧时间，但是1584年使用的参考文档将升级时间定义为一到两个周期。没有尝试计算在此升级期间释放的入射能量。尽管通过附加测试可以最好地回答释放多少附加能量的确切答案，但本文尝试将可能发生的高和低范围入射能量从弧光单相释放到接地故障之前进行分级变成三相故障。由于本文仅为逐步升级之前电弧接地故障释放的额外能量提供了理论基础，因此作者认为，未来的标准应该包括测试从低水平电弧接地故障开始的故障释放的入射能量。 。

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