| 变压器保护若干问题的探讨 |
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| 引用本文： | 吴卫民. 变压器保护若干问题的探讨[J]. 江苏电机工程, 2005, 24(5): 24-26 |
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| 作者姓名： | 吴卫民 |
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| 作者单位： | 无锡供电公司,江苏,无锡,214061 |
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| 摘 要： | 提出在判断出电流变送器（CT）饱和后改变制动特性,当差动动作特性点从制动区转到动作区时,比率差动保护带自适应延时动作等实际应用的解决方案,并通过动模得到验证.最后指出了后备保护存在的一些问题及工程实施中需注意的事项.
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| 关 键 词： | 变压器保护 比率差动保护 励磁涌流 CT饱和 |
| 文章编号： | 1009-0665（2005）05-0024-03 |
| 收稿时间： | 2005-01-11 |
| 修稿时间： | 2005-01-112005-03-21 |
The Study on Some Problems of Transformers Protection |
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| WU Wei-min. The Study on Some Problems of Transformers Protection[J]. Jiangsu Electrical Engineering, 2005, 24(5): 24-26 |
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| Authors: | WU Wei-min |
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| Affiliation: | Wuxi Power Supply company, Wuxi 214061, China |
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| Abstract: | Some new projects to solve the problems are introduced, such as,changing the restraint characteristic when saturation is detected, differential protection would operate with adaptive delay when the operation zone changed. The new project is validated with dynamic simulative test. At last, some advice on backup protection is given. |
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| Keywords: | transformers protection differential protection excitation inrush current saturation of current transformer |
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