A blocking scheme for current circuit break in differential protection system of transformers performed by software of micro-computer is proposed in this paper.

本文提出了一种利用微机软件实现的变压器差动保护电流回路断线闭锁方案。

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These current transformers may not be the same as used for the differential protection as the varistor may cause rapid saturation of this current transformers.

由于压敏电阻可能使得电流变压器快速饱和，故而这些电流变压器可能与差变保护电压器不一样。

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This article discusses the differential protection malfunction of transformers with no-load Input caused by, analyzes the emergence, hazards and characteristics of excitation inrush current.

论述了变压器空载投入时差动保护误动作原因是由励磁涌流引起的，分析了励磁涌流的产生、危害及其特点。

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