| 三绕组变压器低压侧相间后备保护分析及改进 |
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| 引用本文： | 聂宏展,戴武昌,崔实.三绕组变压器低压侧相间后备保护分析及改进[J].东北电力学院学报,2003,23(4):9-11,24. |
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| 作者姓名： | 聂宏展 戴武昌 崔实 |
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| 作者单位： | 东北电力学院电力工程系 吉林吉林132012
(聂宏展，戴武昌)，东北电力学院电力工程系 吉林吉林132012(崔实) |
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| 摘 要： | 变压器相间后备保护对低压侧相间短路故障灵敏度不足和动作时限过长，是外部故障造成变压器损坏的主要原因，分析了反应变压器低压侧相间短路的保护方案，提出了改进措施，这在变压器微机保护中应用简单易行，对保证系统和变压器的安全稳定运行有积极的作用。
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| 关 键 词： | 三绕组变压器 后备保护 灵敏性 过电流保护 微机保护 电力系统 继电保护 |
| 文章编号： | 1005-2992(2003)04-0009-03 |
Analysis and Improvement of Triple-winding Transformer Low-voltage Side Backup-protection for Two-phase Fault |
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| NIE Hong-zhan,DAI Wu-chang,CHUI Shi.Analysis and Improvement of Triple-winding Transformer Low-voltage Side Backup-protection for Two-phase Fault[J].Journal of Northeast China Institute of Electric Power Engineering,2003,23(4):9-11,24. |
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| Authors: | NIE Hong-zhan DAI Wu-chang CHUI Shi |
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| Abstract: | The main causation of transformer damage caused by external fault is the low sensitvity and over-time action of transformer backup protection for two fault at low voltage side.In the paper,the protection scheme and improvement on two-phase at transformer low voltage side is analyzed.It is convenient for use in transformer micro-processor protection,is very significant for system and transformer security |
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| Keywords: | Transformer Back-up protection Sensitivity Measuring impedance |
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