Journal of Guangdong University of Technology ›› 2019, Vol. 36 ›› Issue (04): 65-69.doi: 10.12052/gdutxb.190025

Previous Articles     Next Articles

Design and Experimental Analysis of an Open-close Micro Current Transformer

Dong Wen-hua1, Li Chun-lai1, Lan Xiong2   

  1. 1. Department of Electronics and Information Engineering, Heyuan Polytechnic, Heyuan 517000, China;
    2. Guangdong Yada Electronics Co., Ltd., Heyuan 517000, China
  • Received:2019-02-22 Online:2019-06-18 Published:2019-06-18

HTML

PDF (PC)

2874

Abstract: An open-close micro current transformer is designed for the situation where power disconnection is not applicable and it can replace the conventional current transformer, realizing online installation. The open-close micro current transformer has a square core and a casing made of ferrite with a high permeability, flat cut and small air gap. According to the experimental analysis, it has the advantages of simple structure, convenient operation, high precision and good linearity. In the end, the measures to improve its precision are proposed.

Key words: online installation, current transformer, open-close, core structure, accuracy

CLC Number: 

  • TM452
[1] TONG Y, LI B H. An accurate continuous calibration system for high voltage current transformer[J]. Review of Scientific Instruments, 2011, 82(2):25107-25112
[2] SHI Y R, ZHI J Z, WEN Y H. A multichannel openable-core stage-connection comparator for on-site test of the output current transformers of AC generators[C]//1999 IEEE AUTOTESTCON Proceedings. San Antonio:IEEE, 1999. 225-228.
[3] SO E, SHI Y R, BENNETT D A. High-current high-precision openable-core AC and AC/DC current transformers[J]. IEEE Transactions on Instrumentation and Measurement, 1993, 42(2):571-576
[4] DOIG P, GUNN C, DURANTE L. Reclassification of relay-class current transformers for revenue metering applications[C]//2005/2006 IEEE/PES Transmission and Distribution Conference and Exhibition. Dallas:IEEE, 2006:1244-1251.
[5] 黄世泽, 郭其一. 铁芯开气隙电流互感器暂态特性仿真[J]. 系统仿真学报, 2011, 23(8):1719-1723 HUANG S Z, GUO Q Y. Simulation of transient characteristics for air gapped core current transformer[J]. Journal of System Simulation, 2011, 23(8):1719-1723
[6] 杨玉岗. 现代电力电子的磁技术[M]. 北京:科学出版社, 2003:44-69, 115-136.
[7] 李志新, 王少华, 徐敏锐, 等. 一种新型宽量程电流互感器的设计与性能分析[J]. 电气应用, 2017, 36(13):36-39 LI Z X, WANG S H, XU M R, et al. Design and performance analysis of a new wide range current transformer[J]. Electrical application, 2017, 36(13):36-39
[8] 陈彬, 李世松, 卢欣, 等. 表征开口式电流互感器工作原理的解析模型[J]. 电测与仪表, 2014, 51(23):1-5 CHEN B, LI S S, LU X, et al. An analytical model for characterizing the working principle of open current Transformer[J]. Electrical Measurement & Instrumentation, 2014, 51(23):1-5
[9] 胡书红. 高精度开合式电流互感器的研究[D]. 武汉:华中科技大学, 2014. 20-23.
[10] 贾明, 杨功流. 开合式在线测量大电流的光纤电流互感器[J]. 仪表技术与传感器, 2012(4):1-3 JIA M, YANG G L. Open-close fiber optic current transformer for high-current measurement on line[J]. Instrument Technique and Sensor, 2012(4):1-3
[11] 李春来, 汤晓宇, 罗坤明. 0.1级超微晶微型电流互感器的研究[J]. 仪表技术与传感器, 2015, 11(7):52-53 LI C L, TANG X Y, LUO K M. Research on 0.1 stage micro crystal micro current transformer[J]. Instrument Technology and Sensor, 2015, 11(7):52-53
[12] 张贵新, 万雄, 王鹏. 使用带气隙铁心的电子式电流互感器[J]. 高电压技术, 2009, 35(9):2144-2149 ZHANG G X, WAN X, WANG P. Use electronic current transformer with air gap core[J]. High Voltage Engineering, 2009, 35(9):2144-2149
[13] 中国电器工业协会. 互感器第一部分:通用技术要求:GB 20840.1-2010[S]. 北京:中华人民共和国国家质量监督检验检疫总局, 2010.
[14] 中国机械工业联合会. 微型电流互感器:JB/T10665-2006[S]. 北京:中华人民共和国国家发展和改革委员会, 2006.
[15] BACCIGALUPI A, LICCARDO A. Low-cost prototype for the electronically compensation of current transformers[J]. IEEE Sensors Journal, 2009, 9(6):641-647
[1] Wei De-hong, Cui Jia-wu. An Elevation Accuracy Analysis of AW3D30, SRTM3 and ASTER GDEM under Different Terrain Conditions [J]. Journal of Guangdong University of Technology, 2021, 38(03): 91-96.
[2] Meng Rui, Liao Kai-huai, Alex Hay-Man Ng, Xu Yong-ming. Optimization and Accuracy Improvement of Image Control Point Layout for UAV Mapping [J]. Journal of Guangdong University of Technology, 2021, 38(02): 48-52,82.
[3] Liang Shi-yong, Yu Zhao-qin, Huang Wen-bin, Xiao Cheng-long. A Research on EDM Drilling High Precision Blind Hole [J]. Journal of Guangdong University of Technology, 2020, 37(04): 75-78.
[4] Yang Shu-ling. An Efficient Algorithm for American Option Pricing in the Jump-Diffusion Model [J]. Journal of Guangdong University of Technology, 2018, 35(03): 87-89,112.
[5] DING Qiong, 吕Jun-Tao , CHEN Gao-Wen, ZHAN Xiao-Bin. Influence of LiDAR Systematic Error on Positioning Accuracy [J]. Journal of Guangdong University of Technology, 2015, 32(3): 115-118.
[6] He Rui-wen， Xie Qiong-xiang， Cai Ze-xiang. Influence of Digital Acquisition of the Electrical Information on the Reliability of Relay Protection [J]. Journal of Guangdong University of Technology, 2013, 30(2): 68-73.
[7] Wang Han1,2, Li Wenwang3, Chen An1,2, Zheng Gaofeng4. Advances in Electrospinning Technology for Preparing Nanofibers [J]. Journal of Guangdong University of Technology, 2012, 29(1): 78-82.
[8] ZENG Shi-Kai, LI Li-Juan. Application of Improved Group Search Optimizer in Shape Optimization of Truss Structures [J]. Journal of Guangdong University of Technology, 2010, 27(2): 27-31.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
Copyright © 2017 Journal of Guangdong University of Technology
Add：729 East Dongfeng RD., Guangzhou PRC. Postcode: 510090
Tel：020-37626653,020-37626139,020-37626396
Email：xbzrb@gdut.edu.cn
Supported:Beijing Magtech