交直流混杂环境下变压器漏电感参数分析方法
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摘要
受直流扰动影响时,电力变压器的电感和电流变化不同于传统情况。基于变压器直流扰动模型研究动态漏电感参数的变化特性,并以变压器基本回路方程作为基础,建立考虑直流扰动的T形等效电路,得到动态电感参数矩阵,推导出漏电感辨识方法。将电磁耦合方法用于直流扰动下变压器的电磁特性的模拟分析,对直流扰动下变压器电流、电感以及磁通的变化规律进行归纳总结,从而结合T形等效电路分析变压器两侧动态漏感参数的变化特性,以反映不同的直流扰动水平。最后,通过动模试验验证了仿真分析结果进。
The variation of inductance and current are obviously different from the traditional condition when the power transformer is impacted by DC disturbance. The characteristics of dynamic leakage inductance were studied in AC-DC hybrid transformer. The T-shape equivalent circuit was established based on the basic circuit principle. Identification matrix of the dynamic inductance is obtained,and the identification method of inductance was deduced. Then the electromagnetic characteristics of DC-injected transformer were simulated and analyzed through the time-domain field-circuit coupled method,and the varying rule of the key parameters was summarized. Furthermore,the variation characteristics of dynamic leakage inductance on both sides of transformer were analyzed to reflect the different DC disturbance level combined with T equivalent circuit. Finally,the simulation results were verified by the dynamic model test.
The variation of inductance and current are obviously different from the traditional condition when the power transformer is impacted by DC disturbance. The characteristics of dynamic leakage inductance were studied in AC-DC hybrid transformer. The T-shape equivalent circuit was established based on the basic circuit principle. Identification matrix of the dynamic inductance is obtained,and the identification method of inductance was deduced. Then the electromagnetic characteristics of DC-injected transformer were simulated and analyzed through the time-domain field-circuit coupled method,and the varying rule of the key parameters was summarized. Furthermore,the variation characteristics of dynamic leakage inductance on both sides of transformer were analyzed to reflect the different DC disturbance level combined with T equivalent circuit. Finally,the simulation results were verified by the dynamic model test.
引文
[1] DANIEL G,HECTOR E,ERNESTO V,et al. Algorithm for transformer differential protection based on wavelet correlation modes[J]. IET Generation,Transmission&Distribution,2016,10(12):2871.
[2]许加柱,祁琦,李知宇,等.基于降阶电感矩阵法的多流制牵引主变压器直流滤波电感的计算[J].中国电机工程学报,2015,35(15):3964.XU Jiazhu,QI Qi,LI Zhiyv,et al. Calculations of DC Filter Inductance Used in Multi-System Traction Main Transformers Based on the Reduced-Order Inductance Matrix Method[J]. Proceedings of the CSEE,2015,35(15):3964.
[3] SABURO T,HAYAKI M,TOMOVA H,et al. Imaging of magnetic nanoparticles using a second harmonic of magnetization with DC bias field[J]. IEEE Transactions on Magnetics,2015,51(2):1.
[4]刘春明,黄彩臣,林晨翔.抑制变压器地磁感应电流的电容隔直装置安装位置优化[J].电力系统自动化,2016,40(16):132.LIU Chunming,HUANG Caichen,LIN Chenxiang. Installation position optimization of capacitor DC blocking devices for suppressing geomagnetically induced currents in transformers[J]. Automation of Electric Power Systems,2016,(16):132.
[5]陈国栋,宋晋峰,张亮,等.动态电压恢复器注入变压器的直流偏磁抑制策略[J].中国电机工程学报,2014,34(28):138.CHEN Guodong,SONG Jinfeng,ZHANG Liang,et al. Control strategy for eliminating DC magnetic flux in the injection transformer of a dynamic voltage restorer[J]. Proceedings of the CSEE,2014,34(28):138.
[6] BAODONG B,CHEN Zhiwei,CHEN Dezhi. DC bias elimination and integrated magnetic technology in power transformer[J]. IEEE Transactions on Magnetics,2015,51(11):1.
[7] P R PRICE. Geomagnetically induced current effects on transformers[J]. IEEE Transactions on Power Delivery,2012,17(4):1002.
[8] LIU C M,LIU L G,R P. Geomagnetically induced currents in the high-voltage power grid in China[J]. IEEE Transactions on Power Delivery,2010,24(4):2368.
[9]李泓志,崔翔,刘东升,等.直流偏磁对三相电力变压器的影响[J].电工技术学报,2010,25(05):88.LI Hongzhi,CUI Xiang,LIU Dongsheng,et al. Influence on threephase power transformer by DC bias Excitation[J]. Transactions of China Electrotechnical Society,2010,25(05):88.
[10]谭炳源,卢继平,江波,等.直流偏磁对计量用电流互感器的性能影响分析[J].电网技术,2014,38(05):1408.TAN Bingyuan,LU Jiping,JIANG Bo,et al. Analysis of influence of DC bias on instrument current transformer[J]. Power System Technology,2014,38(05):1408.
[11]焦在滨,马涛,屈亚军,等.基于励磁电感参数识别的快速变压器保护[J].中国电机工程学报,2014,34(10):1658.JIAO Zaibin,MA Tao,QV Yajun,et al. A novel excitation inductance-based power transformer protection scheme[J]. Proceedings of the CSEE,2014,34(10):1658.
[12]索南加乐,许立强,焦在滨,等.基于磁路特征的三相三柱式变压器励磁参数识别[J].中国电机工程学报,2011,31(19):97.SUONAN Jiale,XU Liqiang,JIAO Zaibin,et al. Identification method for excitation inductances of three-phase three-limb transformer based on characteristics of magnetic circuit[J]. Proceedings of the CSEE,2011,31(19):97.
[13]邓祥力,高亮,刘建峰,等.特高压变压器模型漏感参数的稳态识别方法[J].电工技术学报,2014,29(5):254.DENG Xiangli,GAO Liang,LIU Jianfeng,et al. Steady-State parameter identification of UHV transformer model[J]. Transactions of China Electrotechnical Society,2014,29(5):254.
[14]索南加乐,王志恩,焦在滨,等.基于变压器T形等效电路的漏电感参数特性分析[J].电力系统自动化,2010,34(11):38.SUONAN Jiale,WANG Zhien,JIAO Zaibin,et al. Analysis of the leakage inductance parameter characteristics using the transformer T-equivalent circuit[J]. Automation of Electric Power Systems,2010,34(11):38.
[15]王增平,马静.基于等效瞬时漏感与回路方程的变压器保护原理[J].中国电机工程学报,2007,27(19):39.WANG Zengping,MA Jing. A novel principle of transformer protection based on equivalent instantaneous leakage inductance and loop equation[J]. Proceedings of the CSEE,2007,27(19):39.
[16]潘超,孟涛,王梦纯,等.交直流混合模式下变压器动态电感参数辨识方法[J].中国电机工程学报,2015,35(24):6315.PAN Chao,MENG Tao,WANG Mengchun,et al. Identification of dynamic inductance for transformer under AC-DC hybrid mode[J]. Proceedings of the CSEE,2015,35(24):6315.
[17]潘超,何雯婷,郝文波,等.一种变压器时域场路耦合计算的自适应算法[J].电工技术学报,2014,29(12):113.PAN Chao,HE Wenting,HAO Wenbo,et al. A self-adaptive algorithm of time-domain magnetic field and electric circuit coupled computation for transformer[J]. Transactions of China Electrotechnical Society,2014,29(12):113.
[18]尹克宁.变压器设计原理[M].北京:中国电力出版社,2003.
[19]刘春明,王璇,刘连光,等.考虑海岸效应影响的电网地磁感应电流的计算方法[J].中国电机工程学报,2016,36(22):6059.LIU Chunming,WANG Xuan,LIU Lianguang,et al. Calculation method of geomagnetically induced currents in the power grid considering the influence of the coast effect[J]. Proceedings of the CSEE,2016,36(22):6059.
[20]孙建涛,李金忠,张书琦,等.单相单柱旁轭变压器直流偏磁运行性能测试与分析[J].电网技术,2013,37(07):2041.SUN Jiantao,LI Jinzhong,ZHANG Shuqi,et al. Test and analysis on operating performance of transformer with single-phase threelimb core under DC bias[J]. Power System Technology,2013,37(07):2041.
[2]许加柱,祁琦,李知宇,等.基于降阶电感矩阵法的多流制牵引主变压器直流滤波电感的计算[J].中国电机工程学报,2015,35(15):3964.XU Jiazhu,QI Qi,LI Zhiyv,et al. Calculations of DC Filter Inductance Used in Multi-System Traction Main Transformers Based on the Reduced-Order Inductance Matrix Method[J]. Proceedings of the CSEE,2015,35(15):3964.
[3] SABURO T,HAYAKI M,TOMOVA H,et al. Imaging of magnetic nanoparticles using a second harmonic of magnetization with DC bias field[J]. IEEE Transactions on Magnetics,2015,51(2):1.
[4]刘春明,黄彩臣,林晨翔.抑制变压器地磁感应电流的电容隔直装置安装位置优化[J].电力系统自动化,2016,40(16):132.LIU Chunming,HUANG Caichen,LIN Chenxiang. Installation position optimization of capacitor DC blocking devices for suppressing geomagnetically induced currents in transformers[J]. Automation of Electric Power Systems,2016,(16):132.
[5]陈国栋,宋晋峰,张亮,等.动态电压恢复器注入变压器的直流偏磁抑制策略[J].中国电机工程学报,2014,34(28):138.CHEN Guodong,SONG Jinfeng,ZHANG Liang,et al. Control strategy for eliminating DC magnetic flux in the injection transformer of a dynamic voltage restorer[J]. Proceedings of the CSEE,2014,34(28):138.
[6] BAODONG B,CHEN Zhiwei,CHEN Dezhi. DC bias elimination and integrated magnetic technology in power transformer[J]. IEEE Transactions on Magnetics,2015,51(11):1.
[7] P R PRICE. Geomagnetically induced current effects on transformers[J]. IEEE Transactions on Power Delivery,2012,17(4):1002.
[8] LIU C M,LIU L G,R P. Geomagnetically induced currents in the high-voltage power grid in China[J]. IEEE Transactions on Power Delivery,2010,24(4):2368.
[9]李泓志,崔翔,刘东升,等.直流偏磁对三相电力变压器的影响[J].电工技术学报,2010,25(05):88.LI Hongzhi,CUI Xiang,LIU Dongsheng,et al. Influence on threephase power transformer by DC bias Excitation[J]. Transactions of China Electrotechnical Society,2010,25(05):88.
[10]谭炳源,卢继平,江波,等.直流偏磁对计量用电流互感器的性能影响分析[J].电网技术,2014,38(05):1408.TAN Bingyuan,LU Jiping,JIANG Bo,et al. Analysis of influence of DC bias on instrument current transformer[J]. Power System Technology,2014,38(05):1408.
[11]焦在滨,马涛,屈亚军,等.基于励磁电感参数识别的快速变压器保护[J].中国电机工程学报,2014,34(10):1658.JIAO Zaibin,MA Tao,QV Yajun,et al. A novel excitation inductance-based power transformer protection scheme[J]. Proceedings of the CSEE,2014,34(10):1658.
[12]索南加乐,许立强,焦在滨,等.基于磁路特征的三相三柱式变压器励磁参数识别[J].中国电机工程学报,2011,31(19):97.SUONAN Jiale,XU Liqiang,JIAO Zaibin,et al. Identification method for excitation inductances of three-phase three-limb transformer based on characteristics of magnetic circuit[J]. Proceedings of the CSEE,2011,31(19):97.
[13]邓祥力,高亮,刘建峰,等.特高压变压器模型漏感参数的稳态识别方法[J].电工技术学报,2014,29(5):254.DENG Xiangli,GAO Liang,LIU Jianfeng,et al. Steady-State parameter identification of UHV transformer model[J]. Transactions of China Electrotechnical Society,2014,29(5):254.
[14]索南加乐,王志恩,焦在滨,等.基于变压器T形等效电路的漏电感参数特性分析[J].电力系统自动化,2010,34(11):38.SUONAN Jiale,WANG Zhien,JIAO Zaibin,et al. Analysis of the leakage inductance parameter characteristics using the transformer T-equivalent circuit[J]. Automation of Electric Power Systems,2010,34(11):38.
[15]王增平,马静.基于等效瞬时漏感与回路方程的变压器保护原理[J].中国电机工程学报,2007,27(19):39.WANG Zengping,MA Jing. A novel principle of transformer protection based on equivalent instantaneous leakage inductance and loop equation[J]. Proceedings of the CSEE,2007,27(19):39.
[16]潘超,孟涛,王梦纯,等.交直流混合模式下变压器动态电感参数辨识方法[J].中国电机工程学报,2015,35(24):6315.PAN Chao,MENG Tao,WANG Mengchun,et al. Identification of dynamic inductance for transformer under AC-DC hybrid mode[J]. Proceedings of the CSEE,2015,35(24):6315.
[17]潘超,何雯婷,郝文波,等.一种变压器时域场路耦合计算的自适应算法[J].电工技术学报,2014,29(12):113.PAN Chao,HE Wenting,HAO Wenbo,et al. A self-adaptive algorithm of time-domain magnetic field and electric circuit coupled computation for transformer[J]. Transactions of China Electrotechnical Society,2014,29(12):113.
[18]尹克宁.变压器设计原理[M].北京:中国电力出版社,2003.
[19]刘春明,王璇,刘连光,等.考虑海岸效应影响的电网地磁感应电流的计算方法[J].中国电机工程学报,2016,36(22):6059.LIU Chunming,WANG Xuan,LIU Lianguang,et al. Calculation method of geomagnetically induced currents in the power grid considering the influence of the coast effect[J]. Proceedings of the CSEE,2016,36(22):6059.
[20]孙建涛,李金忠,张书琦,等.单相单柱旁轭变压器直流偏磁运行性能测试与分析[J].电网技术,2013,37(07):2041.SUN Jiantao,LI Jinzhong,ZHANG Shuqi,et al. Test and analysis on operating performance of transformer with single-phase threelimb core under DC bias[J]. Power System Technology,2013,37(07):2041.