电气设备定尺用短路电流的计算

Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting Pub Date : 1988-10-02 DOI:10.1109/IAS.1988.25250

T. Laskowski, L. Hannett, T. E. Kostyniak, C.G. Pounds

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引用次数: 1

摘要

电气设备的选择受其所暴露的短路电流的预期大小的影响。广泛使用的交流高压断路器应用指南ANSI/IEEE C37.010-1979和C37.5-1979，以及欧洲使用的IEC标准，推荐了确定断路器负载的程序。这些程序利用故障电流的近似计算。作者提出了一种更精确地逼近故障电流的方法。并对某工业电力系统的短路电流计算方法与ANSI方法进行了比较。

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Calculation of short circuit currents for sizing electrical equipment

Selection of electrical equipment is influenced by the expected magnitudes of the short-circuit currents to which they will be exposed. The widely used application guides ANSI/IEEE C37.010-1979 and C37.5-1979 for AC high-voltage circuit breakers, as well as the IEC standard used in Europe, recommend procedures for determining circuit-breaker duty. These procedures utilize approximate calculations of fault currents. The authors present a method for more accurately approximating fault currents. Calculation of short-circuit currents by the proposed method and by the ANSI method are compared for an industrial power system.<>

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Conference Record of the 1988 IEEE Industry Applications Society Annual Meeting

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