27 / 2020-09-24 11:10:28
Numerical Investigation on Influence of Ambient Electric Field on Error Characteristic of Capacitive Voltage Transformer
ambient electric field,capacitive voltage transformer,error characteristic,finite element analysis
全文录用
Tianyi Liu / Huazhong University of Science and Technology;China;School of Electrical and Electronic Engineering;State Key Laboratory of Advanced Electromagnetic Engineering and Technology;Wuhan 430074
Huan Wang / China Electric Power Research Institute;China;Wuhan 430074
Dezhi Chen / Huazhong University of Science and Technology; China;State Key Laboratory of Advanced Electromagnetic Engineering and Technology; School of Electrical and Electronic Engineering; Wuhan 430074
Capacitive voltage transformer (CVT) is widely used for voltage measurement in power systems. According to practical operations, ambient electric field severely influences measurement error of CVT. To study error characteristics of CVT related to ambient electric field, 3D finite element models of 500 kV CVT along with surrounding electrified equipment (arrester, high-voltage lead, as interfering factors of ambient electric field) are established. Besides, a three-phase CVT equivalent model is built to study influence of interphase interference on error characteristics of CVT. Simulation shows that measurement error is related to the distance between CVT and arrester, height of the arrester pillar and high voltage terminal potential of arrester. Furthermore, variations in angle and length of high-voltage lead would also impact on error of CVT. Effect of interphase interference on CVT error weakens with the increase of interphase distance. Validity of simulation results is verified with off-line experiments.
重要日期
  • 会议日期

    11月02日

    2020

    11月04日

    2020

  • 10月27日 2020

    初稿截稿日期

  • 11月03日 2020

    报告提交截止日期

  • 11月04日 2020

    注册截止日期

  • 11月17日 2020

    终稿截稿日期

主办单位
IEEE IAS Student Chapter of Huazhong University of Science and Technology (HUST)
承办单位
Huazhong University of Science and Technology
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