| 变压器差动保护的励磁涌流制动方法 |
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| 引用本文： | 吴昌设,林琳,刘希嘉.变压器差动保护的励磁涌流制动方法[J].电力科学与技术学报,2009,24(3):58-62,67. |
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| 作者姓名： | 吴昌设 林琳 刘希嘉 |
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| 作者单位： | 1. 温州电力调度通信中心,浙江,温州,325000
2. 温州电力高压修试工区,浙江,温州,325000 |
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| 摘 要： | 阐述变压器励磁涌流产生的机理,分析变压器差动保护装置的涌流制动方案,比较基于二次谐波、波形对称及间断角等制动方法的优缺点;指出变压器差动保护误动的原因和各种制动方法存在的问题,为现场工作的继电保护人员分析故障、校验保护提供理论支持.
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| 关 键 词： | 变压器 励磁涌流 二次谐波制动 波形对称 间断角 |
Inrush current restraint scheme of power transformer differential protection |
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| Affiliation: | WU Chang-she ,LIN Lin ,LIU Xi-jia ( 1. Wenzhou Electric Power Dispatch ＆ Communication Center, Whenzhou 325000, China; 2. Wenzhou Electric Power High Voltage Repair ＆ Test Work Area, Whenzhou 325000, China) |
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| Abstract: | The inrush current generated in transformer is introduced, the used inrush current restraint schemes for transformer differential protection devices are analyzed, and the implemented schemes based on secondary-harmonics, waveforms symmetry, interruptive angles are compared in this paper. The reasons of transformer differential protection＇s malfunction and the problems of inrush current restraint methods are presented. They can provide theoretical support for protection operators to anlyse power system faults and check the orotections operation. |
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| Keywords: | transformer inrush-current secondary-harmonic restraint waveform symmetry interruptive angle |
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