| V/X接线牵引变压器短路电抗在线监测方法 |
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| 引用本文： | 周利军,黄晓峰,李先浪,张志刚.V/X接线牵引变压器短路电抗在线监测方法[J].西南交通大学学报,2013,26(4):750-755. |
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| 作者姓名： | 周利军 黄晓峰 李先浪 张志刚 |
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| 基金项目： | 国家自然科学基金资助项目(51107105/E0705,U1234203/E070403)四川省杰出青年基金资助项目(2011JQ0009) |
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| 摘 要： | 为有效判断变压器绕组的变形与否,根据V/X接线牵引变压器的等效电路,利用变压器高压侧各相电压、电流及各供电臂馈线对地电压、电流的监测数据,推导建立了变压器短路电抗的计算模型,并以多次监测值的相对标准偏差为依据,提出了测试结果的精度控制方法. 测试结果表明,虽然提出的方法没有在绕组上安装附加传感器,但测试得到的一台V/X接线牵引变压器A、B和C、B相间的短路电抗分别为67.31和61.18 Ω,与离线数据67.40和61.27 Ω非常吻合,该在线监测方法有效且极具实用性.
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| 关 键 词： | V/X接线 变压器绕组 绕组变形 短路电抗 在线监测 |
| 收稿时间： | 2012-10-30 |
On-line Monitoring Method for Short-Circuit Reactance of V/X Wiring Traction Transformer |
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| ZHOU Lijun,HUANG Xiaofeng,LI Xianlang,ZHANG Zhigang.On-line Monitoring Method for Short-Circuit Reactance of V/X Wiring Traction Transformer[J].Journal of Southwest Jiaotong University,2013,26(4):750-755. |
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| Authors: | ZHOU Lijun HUANG Xiaofeng LI Xianlang ZHANG Zhigang |
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| Abstract: | Based on the equivalent circuit of V/X wiring traction transformer, a calculation model of short-circuit reactance was established to effectively detect the transformer winding deformation by using the monitoring current and voltage data of each primary phase and the feeder line. According to the relative standard deviation of monitoring data, the precision control method for test results was presented. The results show that even without additional sensor installed on the windings, the tested short-circuit reactances of A-B phase and C-B phase of a V/X wiring traction transformer with the proposed method are 67.31 and 61.18 Ω, respectively, which are very close to the off-line test data of 67.40 and 61.27 Ω, revealing that the proposed on-line monitoring method is effective and practical. |
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