磁调制式剩余电流传感器的动态励磁过程分析与仿真

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Abstract With the development of smart grid and the increase of power electronic devices, residual current presents nonlinear characteristics in the event of faults on these devices. This paper focuses on the study of dynamic characteristics of nonlinear residual current transformer. Firstly the dynamic model is established to describe the changing process of excitation current of the voltage-drive magnetic modulation residual current transformer. And the equations to obtain the frequency of pulsed excitation voltage are derived. Furthermore, it is proved that the residual current can be measured precisely by detecting the excitation current. Secondly, the dynamic process of the excitation current is analyzed and it is found that the reasonable selection of saturated current will lead to agreement in the results of both frequency of pulsed excitation voltage and the mean value of excitation current even if magnetic hysteresis is not considered. Additionally, factors that affect the operating performance of the residual current transformer are analyzed and several measures, such as varying number of turns, tuning amplitude of pulsed excitation voltage and reversing the exciting current, can be taken to make the transformer meet the design requirements. Finally, both simulation and experimental results are presented to verify the dynamic process of excitation current. It is found that the simulation result of dynamic process is more consistent with the actual changing process when magnetic hysteresis is taken into consideration. In conclusion, the analysis of dynamic process for excitation current in this paper lays foundation for the design of voltage-drive magnetic modulation residual current transformer.

Key words： Magnetic modulation residual current transformer dynamic process of excitation current magnetic hysteresis

Received: 13 January 2014 Published: 05 August 2014

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TM52

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	Articles by authors
	Wu Yi
	Li Kui
	Wang Yao
	Niu Feng
	Liu Bingyue
	Ren Bofei
	Liu Yousong

Cite this article:

Wu Yi,Li Kui,Wang Yao等. Analysis and Simulation of Dynamic Process of Excitation Current of Magnetic Modulation Residual Current Transformer[J]. Transactions of China Electrotechnical Society, 2014, 29(7): 244-252.

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http://dgjsxb.ces-transaction.com/EN/ OR http://dgjsxb.ces-transaction.com/EN/Y2014/V29/I7/244

[1] 武一, 李奎, 岳大为, 等. 消除剩余电流保护动作死区的理论与方法[J]. 电工技术学报, 2008, 23(6): 44-49. Wu Yi, Li Kui, Yue Dawei, et al. Theory and method of eliminating operating dead zone of residual current protection[J]. Transactions of China Electrotechnical Society, 2008, 23(6): 44-49.
[2] 李奎, 陆俭国, 武一. 消除漏电保护死区的新技术及其试验方法[J]. 电力系统保护与控制, 2008, 36(20): 28-32. Li Kui, Lu Jianguo, Wu Yi. Technology of eliminating dead zone of leakage current protection and its examining method[J]. Power System Protection and Control, 2008, 36(20): 28-32.
[3] 吴会琴, 陈宝新, 朱才荣. 一种无死区的电流脉冲型漏电保护器的设计[J]. 机床电器, 2005(2): 8-10. Wu Huiqin, Chen Baoxin, Zhu Cairong. Design of a non-blind area current pulse leakage protecting device[J]. Machine Tool Electric Apparatus, 2005(2): 8-10.
[4] 李奎, 陆俭国, 武一, 等. 自适应漏电保护技术及其应用[J]. 电工技术学报, 2008, 23(10): 53-57. Li Kui, Lu Jianguo, Wu Yi, et al. Adaptive technology of leakage current operation protection and its application[J]. Transactions of China Electro- technical Society, 2008, 23(10): 53-57.
[5] 朱遵义, 刘静波. 剩余电流互感器的特性分析[J]. 变压器, 2007(5): 34-37. Zhu Zunyi, Liu Jingbo. Characteristic analysis of residual current transformer[J]. Transformer, 2007(5): 34-37.
[6] Young Tae Part, Young Kap Jung, Young Beom Kim, et al. Openable-core AC and DC leakage-current detector[J]. Science Direct, 2007(3): 249-251.
[7] Takahiro Kudo, Dev Center. Wide-range AC/DC earth leakage current sensor using fluxgate with self- excitation system[C]. IEEE Sensors Conference, 2011: 512-515.
[8] Xu Zeliang, Min Yingzong. Type B RCD with a simplified magnetic modulation method[C]. Proceedings of IEEE 6th International Power Electronic and Motion Control Conference, Wuhan, China, 2009: 769-772.
[9] 王尧, 李奎, 郭志涛, 等. 磁调制式直流漏电流互感器[J]. 电工电能新技术, 2012, 31(2): 69-73. Wang Yao. Li Kui, Guo Zhitao, et al. Magnetic modulation-based DC leakage current transformer[J]. Advanced Technology of Electrical Engineering and Energy, 2012, 31(2): 69-73.
[10] 王尧. 复杂波形条件下剩余电流检测技术研究[D]. 天津: 河北工业大学, 2012.
[11] Min Yingzong. An AC/DC sensing method based on adaptive magnetic modulation technology with double feedback properties[C]. IEEE International Workshop on Applied Measurements for Power Systems, 2011: 48-52.
[12] 陈庆. 基于霍尔效应和空芯线圈的电流检测新技术[D]. 武汉: 华中科技大学, 2008.
[13] Luo Xiang, Wang Du Y, Chen X H, et al. Tripping characteristics of residual current devices under non-sinusoidal currents[J]. IEEE Transactions on Industrial Applications, 2011, 47(3): 1515-1521.
[14] James Lenz. Magnetic sensors and their applications [J]. IEEE Sensors Journal, 2006(3): 631-649.
[15] Ripka P. Current sensors using magnetic materials[J]. Journal of Optoelectronics and Advanced Materials, 2004(2): 587-592.
[16] 刘明, 李金忠, 刘锐, 等. 电子式互感器技术和应用评述[J]. 变压器, 2013(2): 24-28. Liu Ming, Li Jinzhong, Liu Rui, et al. Review on technology and application of electronic instrument transformer[J]. Transformer, 2013(2): 24-28.
[17] 邱洪顺, 唐平, 王倩倩. 光学电流传感器在电网接地故障零序电流检测中的应用[J]. 电工电气, 2012(4): 29-32. Qiu Hongshun, Tang Ping, Wang Qianqian. Application of optical current transducer in power grid grounding fault zero sequence current testing[J]. Jiangsu Electrical Apparatus, 2012(4): 29-32.
[18] 张艳, 陈金玲, 张明明, 等. 一种新型传感结构的光学直流电流传感器[J]. 中国电机工程学报, 2009, 29 (3): 121-127. Zhang Yan, Chen Jinling, Zhang Mingming, et al. Optics direct current sensor with novel sensing structure[J]. Proceedings of the CSEE, 2009, 29(3): 121-127.
[19] Milan M Ponjavic', Radivoje M Duric．Nonlinear modeling of the self-oscillating fluxgate current sensor[J]．IEEE Sensors Journal, 2007, 7(11): 1546- 1553.
[20] 张民, 王向军, 嵇斗, 等. 磁调制式电流传感器的数学模型与性能分析[J]. 海军工程大学学报, 2008, 20(6): 75-78. Zhang Min, Wang Xiangjun, Ji Dou, et al. Mathematical model and performance analysis of magnetic modulated current sensor[J]. Journal o f Naval University of Engineering, 2008, 20(6): 75-78.
[21] 向小民, 曾维鲁, 高学军．一种新式磁调制直流电流测量方法[J]．华中理工大学学报, 1998, 26(12): 65-67． Xiang Xiaomin, Zeng Weilu, Gao Xuejun. A new method of direct current measurement based on magnettor[J]. Journal of Huazhong University of Science and Technology, 1998, 26(12): 65-67．
[22] 刘义崇. 恒压源激励下磁调制器中偶次谐波的分析与计算[J]. 电测与仪表, 1979(4): 14-18. Liu Yichong. Analysis and calculation of even harmonics in magnetic modulator under constant power voltage source excitation[J]. Electrical Measure- ment & Instrumentation, 1979 (4): 14-18.
[23] 郭来祥. 磁调制器的理论与计算[J]. 电测与仪表, 1978(6): 13-21. Guo Laixiang. Theory and calculation of magnetic modulator[J]. Electrical Measurement & Instrumentation, 1978(6): 13-21.