基于负序电源的电力变压器内部故障差动保护的改进操作

Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137) Pub Date : 1998-03-03 DOI:10.1109/EMPD.1998.702605

K. Tian, Pei Liu

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引用次数: 18

摘要

电力系统变压器二次谐波约束差动保护存在内部故障不运行的可能。在傅里叶分析的基础上，提出了一种通过改变负序幂来抵消二次谐波约束的新方案。它可以提高保护功能。

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Improved operation of differential protection of power transformers for internal faults based on negative sequence power

There is a possible of nonoperation for internal faults of second harmonic restraint differential protection of transformers of power systems. Based on Fourier analysis, a new scheme of second harmonic restraint canceled by change of the negative sequence power is proposed in this paper. It can improve the protection functions.

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Proceedings of EMPD '98. 1998 International Conference on Energy Management and Power Delivery (Cat. No.98EX137)

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