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变压器零序差动保护原理及调试
引用本文:马玉玲.变压器零序差动保护原理及调试[J].电网与水力发电进展,2009,25(9):23-25.
作者姓名:马玉玲
作者单位:宁夏宁东供电局,银川 751408
摘    要:变压器差动保护用于防御变压器绕组和引出线多相短路、大电流接地系统侧绕组和引出线的单相接地等故障,与瓦斯保护共同构成了变压器的主保护。而保护装置针对自耦变压器,还配置了零序差动保护。结合自耦变压器的结构特点。以南自PST1200变压器保护装置为例分析了零序差动的原理构成及特点.简要总结了零差保护的调试方法,能够较快且准确的校验零差保护逻辑功能的正确性,并已在实际工作中得到了很好的验证。

关 键 词:自耦变压器  零序  差动保护  调试方法

Zero-Sequence Differential Protection Principle and Debugging for Transformer
Authors:MA Yu-ling
Affiliation:Ningdong Power Supply Bureau, Yinchuan 751408, Ningxia Hui Autonomous Region, China
Abstract:Transformer differential protection can prevent short-circuit between transformer winding and lead-out wire or lateral winding of high ground current system, which makes up of the transformer main protection with gas protection together. Protection devices is equipped with zero-sequence differential protection for the auto-transformer. Consideration of the structural characteristics of autotransformer, the principles and characteristics of zero-sequence differential protection are analyzed by taking PST1200 as an example, debugging method of zero-sequence differential protection is summed up briefly, the method can well verify the logical function correctness of zero-sequence differential protection, and it has been verified in practical application.
Keywords:autotransformer  zero - sequence  differential protection  debugging method
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