| 波形对称原理的变压器差动保护 |
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| 引用本文： | 孙志杰,陈云仑.波形对称原理的变压器差动保护[J].电力系统自动化,1996,20(4):42-46. |
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| 作者姓名： | 孙志杰 陈云仑 |
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| 作者单位： | （电力自动化设备总厂·210003·南京） |
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| 摘 要： | 提出利用差电流导数的前半波与后半波作对称比较以区别励磁涌流和故障电流。用此方 法实现的变压器差动保护，经试验证明动作可靠，抗干扰能力强。
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| 关 键 词： | 励磁涌流 变压器保护 剩磁 |
| 收稿时间： | 1/1/1900 12:00:00 AM |
| 修稿时间： | 1/1/1900 12:00:00 AM |
TRANSFORMER DIFFERENTIAL PROTECTION BASED ON THE CHARACTERISTIC ANALYSIS OF THE FIRST AND SECOND HALF CYCLE OF THE MAGNETIZING IN-RUSH CURRENT |
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| Sun Zhijie, Chen Yunlun.TRANSFORMER DIFFERENTIAL PROTECTION BASED ON THE CHARACTERISTIC ANALYSIS OF THE FIRST AND SECOND HALF CYCLE OF THE MAGNETIZING IN-RUSH CURRENT[J].Automation of Electric Power Systems,1996,20(4):42-46. |
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| Authors: | Sun Zhijie Chen Yunlun |
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| Abstract: | By finding the derivatives of the phase differential currents of the magnetizing in-rush currents and then comparing the first half cycle with the second half. fault or in-rush current can be discriminated. Model device based on this principle shows that its operation is reliable and noise immunity is strong. |
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| Keywords: | magnetizing in-rush current transformer protection residual magnetism |
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