| 变压器零序差动保护原理及调试 |
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| 引用本文：马玉玲.变压器零序差动保护原理及调试[J].电网与清洁能源,2009,25(9):23~25 |
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| 中文摘要: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 |
| 中文关键词:自耦变压器 零序 差动保护 调试方法 |
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| Zero-Sequence Differential Protection Principle and Debugging for Transformer |
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| 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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