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| Study about the Configuration Schemes for Main Protection of Autotransformer |
| Xi Yake, Liu Guilian, Liu Yongxin, Niu Qiang, Tao Yongjian |
| XJ Group Corporation, Xuchang, He’nan 461000 |
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Abstract In order to preferably evaluate the differential protection of autotransformer whether it meets the sensitive and reliable requirements about the high voltage and medium voltage Yn sides grounding short-circuit and configures the main protection correctly. This paper calculates the short-circuit of the high voltage and medium voltage Yn sides by transition resistance and verifies the sensitivity factor of differential protection grounding fault by the actual calculation results of autotransformer differential protection. The calculation results show the differential protection can not meet the requirements when the high voltage and medium voltage sides of autotransformer ground by transition resistance, so it is necessary to add zero-sequence or separation side differential protection for meeting the requirements of the earth-fault sensitivity in the different operation modes.
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Published: 02 June 2015
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| Cite this article: |
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Xi Yake,Liu Guilian,Liu Yongxin等. Study about the Configuration Schemes for Main Protection of Autotransformer[J]. Electrical Engineering, 2015, 16(06): 84-88.
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| URL: |
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http://dqjs.cesmedia.cn/EN/Y2015/V16/I06/84
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[1] 索南加乐, 张军民, 许立强, 等. 基于Yn/△接线变压器零序纵差保护原理研究[J]. 电力系统保护与控制, 2010, 38(16): 54-61.
[2] 王增平, 王雪. 基于改进主成分分析的变压器励磁涌流识别方法[J]. 电力系统保护与控制, 2011, 39(22): 1-5, 51.
[3] 李中, 苑津莎, 张利伟. 基于自组织抗体网络的电力变压器故障诊断[J]. 电工技术学报, 2010, 25(10): 200-206.
[4] 孙集伟. 自耦变压器零序差动保护问题[J]. 电力系统自动化, 1999, 23(11): 45-49.
[5] 王雪, 王增平. 基于波形时域分布特征的变压器励磁涌流识别[J]. 电工技术学报, 2012, 27(1): 148-154.
[6] 王雪, 王增平. 基于广义基波功率的新型变压器主保护方案[J]. 电工技术学报, 2012, 27(12): 191-198.
[7] 刘桂莲, 席亚克, 罗明亮. 升压变Yn侧区内接地短路差动保护能正确动作[J]. 电力系统保护与控制, 2011, 39(13): 130-133.
[8] GB/T 14285—2006 继电保护和安全自动装置技术规程[S].
[9] DL/T 684—1999《大型发电机变压器继电保护整定导则》[Z].
[10] 何仰赞, 温增银. 电力系统分析-上册[M]. 武汉: 华中工学院出版社, 1984. |
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2015, Vol. 16 
