LOW VOLTAGE APPARATUS ›› 2022, Vol. 0 ›› Issue (8): 8-17.doi: 10.16628/j.cnki.2095-8188.2022.08.002

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Analysis and Optimization of Transmission Characteristics Of Wide Range Current Transformers Based on Multi-Objective Particle Swarm Algorithm

XIE Yunhao1, WU Ziran1,2, CHEN Wei1,2, BAO Xiaozhong3, XU Haibo2   

  1. 1. Low Voltage Apparatus Technology Research Center of Zhejiang,Wenzhou University, Wenzhou 325606,China
    2. Technology Institute of Wenzhou University in Yueqing,Wenzhou 325699,China
    3. Zhejiang Tengen Electric Co.,Ltd.,Yueqing 325600,China
  • Received:2022-01-28 Online:2022-08-30 Published:2022-10-11

Abstract:

The mathematical model of the current transformer considering material nonlinearity and secondary circuit parameters is established to calculate the transmission current waveform in a wide range.The vertical resolution of secondary current with high current value is used as evaluation index to analyze the influence of key design parameters on transformer transmission characteristics.In addition,the multi-objective particle swarm optimization algorithm is used to optimize the current transformer with 250 A rated current.On the premise of ensuring the measurement accuracy in the linear region,the vertical resolution in the deep saturation region is improved by 13.2%and the cost is reduced by 5.4%.

Key words: current transformer, quick-break protection, vertical resolution, multi-objective particle swarm optimization algorithm

CLC Number: