Study on the Sensitivity Problem of Transformer’s Over Current Protection Interlocked by Compound Voltage

doi:10.11930/j.issn.1004-9649.2014.7.67.3

Abstract

Abstract: Based on the sensitivity problem of transformer’s over current protection interlocked by compound voltage, a comprehensive comparison analytical method is used to simulated the operating conditions of transformers with various parameters, to calculate the short currents of different types of power faults, and to find out the causes for the insufficient sensitivity of transformer’s over current protection interlocked by compound voltage according to the changes of transformer’s running mode, and some solutions are proposed. The method is proved to be comprehensive and practical.

Key words: transformer, short current resistance, over current protection, short current calculation, insufficient sensitivity, running mode

CLC Number:

TM41

LI Zi-feng. Study on the Sensitivity Problem of Transformer’s Over Current Protection Interlocked by Compound Voltage[J]. Electric Power, 2014, 47(7): 67-70.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.2014.7.67.3

https://www.electricpower.com.cn/EN/Y2014/V47/I7/67

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Study on the Sensitivity Problem of Transformer’s Over Current Protection Interlocked by Compound Voltage

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