| 负序电流及其对汽轮发电机的危害 |
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| 引用本文： | 张文辉.负序电流及其对汽轮发电机的危害[J].上海应用技术学院学报,2006,6(2):114-116,136. |
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| 作者姓名： | 张文辉 |
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| 作者单位： | 陕西宝鸡第二发电有限公司 陕西宝鸡721008 |
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| 摘 要： | 负序电流对发电机所造成的危害已经在电力系统的运行实践中被多次证实。当负载不对称或非全相运行时,其中的负序电流分量就会在发电机的转子表面流过,产生局部过热,使绝缘受到损坏并伴随有强烈的机械破坏。本文从理论和运行实践上阐明了负序电流的起因和危害,并给出了相应的防止措施。
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| 关 键 词： | 负序电流 汽轮发电机 不对称 非全相 |
| 文章编号： | 1671-7333（2006）02-0114-03 |
| 收稿时间： | 2006-03-06 |
| 修稿时间： | 2006-03-06 |
The Negative Sequence Current and its Damage to Turbin-generator |
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| ZHANG Wen-hui.The Negative Sequence Current and its Damage to Turbin-generator[J].Journal of Shanghai Institute of Technology: Natural Science,2006,6(2):114-116,136. |
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| Authors: | ZHANG Wen-hui |
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| Institution: | The Second Power Plant Co, Ltd. , Baoji, 721008, Shanxi China |
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| Abstract: | The damage caused by the negative sequence current to the generator has been confirmed in the power system practice.When the load is asymmetry or non-three-phase,the negative sequence current will flow upon the surface of rotor and cause high temperature in local and make damage to the insulation accompanied by strong mechanical vibration.This article illuminates the origin and hazards of the negative sequence current from the theory and practice and gives the corresponding preventive measures. |
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| Keywords: | negative sequence current turbin-generator asymmetry non-three-phase |
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