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| Differential Protection Scheme of the Rectifier Unit based on Electronic Current Transformer |
| Jiang Ruizhi1, Liu Xing1, Liu Zhiyuan2, Yao QingLin1 |
1. XJ Electric Company Limited, Xuchang, He’nan 461000;
2. Ningxia Provincial Power Dispatching Center, Yinchuan 750001 |
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Abstract A transformer unit differential protection method of rectifier is proposed in this paper. The rectifier unit consists of a voltage regulating transformer, rectifier transformer interval are respectively arranged voltage regulating transformer differential protection device, rectifier transformer differential protection device. According to the characteristics of voltage transformer frequent voltage and wide voltage regulation, according to the current transformer on load voltage regulating gear differential protection real-time calculation of the equilibrium coefficient method, is proposed to adapt to different shifting phase angle of the rectifier transformer current compensation method. The high power rectifier unit relay protection configuration is improved, fill the blank of rectifier unit differential protection.
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Published: 20 July 2017
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| Cite this article: |
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Jiang Ruizhi,Liu Xing,Liu Zhiyuan等. Differential Protection Scheme of the Rectifier Unit based on Electronic Current Transformer[J]. Electrical Engineering, 2017, 18(7): 45-49.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2017/V18/I7/45
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2017, Vol. 18 
