| 一种高可靠的自适应励磁涌流制动方法 |
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| 引用本文： | 骆健,吴罡明,丁大德.一种高可靠的自适应励磁涌流制动方法[J].电力系统自动化,2010,34(2):80-83. |
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| 作者姓名： | 骆健 吴罡明 丁大德 |
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| 作者单位： | 1. 南京中德保护控制系统有限公司,江苏省南京市,210003
2. 江苏南京供电公司,江苏省南京市,210003 |
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| 摘 要： | 在简述传统二次谐波制动原理和存在问题的基础上,分析了空投于无故障变压器和有故障变压器时差动电流基波含量和二次谐波含量的变化特性.利用该特性提出一种自适应的励磁涌流制动方法.通过该方法实时判断变压器的运行状态,确定可靠闭锁或及时开放差动,解决现有方法在励磁涌流制动和差动保护正确快速动作之间的矛盾,提高了励磁涌流制动的灵敏性,确保变压器在仅有励磁涌流的情况下可靠制动,在任何有区内故障的情况下又能正确快速动作.
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| 关 键 词： | 差动保护 励磁涌流 二次谐波 自适应 |
| 收稿时间： | 2/5/2009 7:05:10 PM |
| 修稿时间： | 2009/10/13 0:00:00 |
A Highly Reliable Adaptive Inrush Current Restraint Principle |
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| LUO Jian,WU Gangming,DING Dade.A Highly Reliable Adaptive Inrush Current Restraint Principle[J].Automation of Electric Power Systems,2010,34(2):80-83. |
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| Authors: | LUO Jian WU Gangming DING Dade |
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| Affiliation: | 1.Nanjing Sino-German Protection & Substation Control Systems Co.Ltd.;Nanjing 210003;China;2.Nanjing Power Supply Co.;China |
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| Abstract: | Following the discussion of traditional 2nd order harmonics restraint principle and its deficiency,the paper analyzes variation characteristics of the fundamental component and 2nd order harmonics component of differential current when a normal transformer is energized and when a faulty transformer is energized.Based on the characteristics,a new adaptive inrush current restraint principle is proposed.The method judges the real-time operation state of a transformer and ensures secure blocking and dependable ... |
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| Keywords: | differential protection magnetizing inrush current the 2nd order harmonics adaptive |
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