| 一起主变低压侧线路故障引起越级跳闸故障分析 |
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| 引用本文： | 舒逸石,王薇,韩 光.一起主变低压侧线路故障引起越级跳闸故障分析[J].华中电力,2012,25(1):33-35. |
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| 作者姓名： | 舒逸石 王薇 韩 光 |
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| 作者单位： | 安阳供电公司,河南省安阳供电公司,安阳供电公司 |
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| 摘 要： | 介绍了一起10kV线路故障造成35kV线路越级跳闸事故。依据主变Y-△转换后高、低压侧故障电流的向量、幅值关系，通过对故障波形的分析及故障电流的计算，验证了保护动作的正确性，为今后分析类似故障提供了参考。并提出了相应的整改措施，以避免此类越级跳闸事故发生。
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| 关 键 词： | 越级跳闸 主变Y-△转换 故障波形 故障电流 |
| 收稿时间： | 9/5/2011 12:00:00 AM |
| 修稿时间： | 9/5/2011 12:00:00 AM |
Analyzing A Main Transformer Low Voltage Side Line Fault Causing Override Trip Accident |
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| SHU Yi-shi,WANG Wei and HAN Guang.Analyzing A Main Transformer Low Voltage Side Line Fault Causing Override Trip Accident[J].Central China Electric Power,2012,25(1):33-35. |
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| Authors: | SHU Yi-shi WANG Wei and HAN Guang |
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| Affiliation: | Henan Anyang Power Supply Company,Anyang electric power company of Henan Province,Henan Anyang Power Supply Company |
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| Abstract: | This article introduces a 35kV trip accident caused by a 10kV line fault.It verifies the correctness of protection actions according to the vector and amplitude relations of fault current on high or low voltage side after the main transformer Y-△ connection conversion,and through analysis of the fault waveform and calculation of the fault current,the analysis can be a reference for future similar faults.At last,the corresponding rectification measures are put forward in order to avoid similar override trip accidents. |
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| Keywords: | override trip main transformer Y-△ connection conversion fault waveform fault current |
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