| 故障分量比相原理在变压器保护中的应用 |
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| 引用本文： | 郭光荣.故障分量比相原理在变压器保护中的应用[J].电力系统保护与控制,2002,30(11):72-75. |
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| 作者姓名： | 郭光荣 |
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| 作者单位： | 重庆电力高等专科学校电力系，重庆 400053 |
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| 摘 要： | 通过比较变压器内部短路、空载合闸、外部故障切除时电源侧母线电压的特征 ,提出一种识别励磁涌流的新方法。通过比较变压器内部短路、外部短路故障分量的相位特征 ,提出变压器主保护的故障分量比相原理。该原理可以很好地解决区外短路的不平衡电流对变压器主保护的影响 ,提高了主保护灵敏性、选择性和快速性。
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| 关 键 词： | 励磁涌流 故障分量 相位比较 |
| 文章编号： | 1003-4897(2002)11-0072-04 |
| 修稿时间： | 2001年11月14 |
Application of the principle of phase comparison of the fault component in transfomer protection |
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| GUO Guang_rong.Application of the principle of phase comparison of the fault component in transfomer protection[J].Power System Protection and Control,2002,30(11):72-75. |
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| Authors: | GUO Guang_rong |
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| Abstract: | The paper provides a new method to recognize magnetizing inrush current by comparing the character of busbar voltage on the power source side when interal short circuit, no_load closing and external short ciruit occured in the transfomer, and presents the principle of phase comparison of the fault component of transformer main protection. By comparing the phase characteristics of internal short circuit and external short circuit, this principle can solve the influence of imbalance current of short circuit outside the protected zone on main protection of transfomer, and improve sensitivity, selectivity and speed of the transfomer main protection. |
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| Keywords: | magnetizing inrush current fault component phase comparison |
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