V/X接线牵引变压器短路电抗在线监测方法
doi: 10.3969/j.issn.0258-2724.2013.04.024
On-line Monitoring Method for Short-Circuit Reactance of V/X Wiring Traction Transformer
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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.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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Key words:
- V/X wiring /
- transformer windings /
- winding deformation /
- short-circuit reactance /
- on-line monitoring
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李群湛,郭锴,周福林. 交流电气化铁路AT供电牵引网电气分析[J]. 西南交通大学学报,2012,47(1): 1-6. LI Qunzhan, GUO Kai, ZHOU Fulin. Analysis of power supply network in AC electrified railway[J]. Journal of Southwest Jiaotong University, 2012, 47(1): 1-6. 何正友,方雷,郭东,等. 基于AT等值电路的牵引网潮流计算方法[J]. 西南交通大学学报,2008,43(1): 1-7. HE Zhengyou, FANG Lei, GUO Dong, et al. Algorithm for power flow of electric traction network based on equivalent circuit of AT-fed system[J]. Journal of Southwest Jiaotong University, 2008, 43(1): 1-7. 韦国,闵英杰,周利军,等. V/X接线牵引变压器的温升特性[J]. 中国铁道科学,2011,32(3): 80-85. WEI Guo, MIN Yingjie, ZHOU Lijun, et al. Temperature rise characteristics of V/X wiring traction transformer[J]. China Railway Science, 2011, 32(3): 80-85. 杨振龙. V/X接线与Scott接线牵引变压器的工程应用比较[J]. 电气化铁道,2006(3): 4-7. YANG Zhenlong. Comparison between engineering application of V/X wiring and scott wiring traction transformer[J]. Electric Railway, 2006(3): 4-7. TANG Dahai, YAN Guoping, YI Xin. Analysis of the 220 kV line distance protection's measuring impedance when V/X traction transformer is in short circuit[C]//2010 China International Conference on Electricity Distribution. Nanjing: IEEE, 2010: 1-8. 李剑,夏珩轶,杜林,等. 变压器绕组轻微变形ns级脉冲响应分析法[J]. 高电压技术,2012,38(1): 35-42. LI Jian, XIA Hengyi, DU Lin, et al. Nanosecond impulse response analysis on transformers winding slight deformation[J]. High Voltage Engineering, 2012, 38(1): 35-42. 徐剑,邵宇鹰,王丰华,等. 振动频响法与传统频响法在变压器绕组变形检测中的比较[J]. 电网技术,2011,35(6): 213-218. XU Jian, SHAO Yuying, WANG Fenghua, et al. Comparative research on behavior of vibration frequency response analysis and frequency response analysis in detection of transformer winding deformation[J]. Power System Technology, 2011, 35(6): 213-218. 沈煜. 1 000 kV特高压变压器现场绕组变形测量与分析[J]. 高压电器,2010,46(6): 6-9,11. SHEN Yu. On-site deformation measurement and analysis of a 1 000 kV ultra high voltage power transformer[J]. High Voltage Apparatus, 2010, 46(6): 6-9, 11. 陈巧勇,任红,罗平,等. 电力变压器绕组变形的综合诊断法[J]. 高压电器,2011,47(7): 50-53. CHEN Qiaoyong, REN Hong, LUO Ping, et al. Comprehensive diagnosis method of winding deformation of power transformer[J]. High Voltage Apparatus, 2011, 47(7): 50-53. 李顺尧,谢建容. 220 kV变压器绕组变形不拆线测试方法探讨[J]. 高压电器,2010,46(9): 88-91. LI Shunyao, XIE Jianrong. Test of winding deformation without disconnection for 220 kV transformer[J]. High Voltage Apparatus, 2010, 46(9): 88-91. 范竞敏,曹建,丁家峰. 电力变压器绕组状态实时监测算法[J]. 电力自动化设备,2010,30(3): 81-85. FAN Jingmin, CAO Jian, DING Jiafeng. Real-time monitoring algorithm of power transformer windings status[J]. Electric Power Automation Equipment, 2010, 30(3): 81-85. 欧小波,汲胜昌,彭晶,等. 漏电抗的参数辨识技术在线监测变压器绕组变形的研究[J]. 高压电器,2010,46(12): 41-44. OU Xiaobo, JI Shengchang, PENG Jing, et al. Study on on-line detecting of transformer winding deformation based on parameter identification of leakage reactance[J]. High Voltage Apparatus, 2010, 46(12): 41-44. 高仕斌,王果. 变压器绕组变形在线监测方法的改进[J]. 高电压技术,2002,28(9): 31-33. GAO Shibin, WANG Guo. Research on on-line monitoring of winding deformation of power transformer[J]. High Voltage Engineering, 2002, 28(9): 31-33. 高仕斌,王果. 牵引变压器绕组变形在线检测方法研究[J]. 铁道学报,2004,26(2): 60-65. GAO Shibin, WANG Guo. Study on on-line detecting of deformation of transformer winding[J]. Journal of the China Railway Society, 2004, 26(2): 60-65. 郭蕾,李群湛,解绍锋,等. 基于谐波分析的牵引变压器绕组短路电抗监测方法[J]. 中国铁道科学,2007,28(6): 80-83. GUO Lei, LI Qunzhan, XIE Shaofeng, et al. Monitoring method for winding short circuit reactance of traction transformer based on harmonic analysis[J]. China Railway Science, 2007, 28(6): 80-83. 张亚杰,龚永刚,李静. 电气化铁路VX接线牵引变压器的设计特点[J]. 变压器,2012,49(3): 1-4. ZHANG Yajie, GONG Yonggang, LI Jing. Design characteristics of VX connection traction transformer of electrification railway[J]. Transformer, 2012, 49(3): 1-4. 杨振龙. V/X接线牵引变压器的研究和应用[J]. 电气化铁道,2004(4): 12-15. YANG Zhenlong. Research and application of V/X wiring traction transformer[J]. Electric Railway, 2004(4): 12-15.
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