Modeling the Wideband Passive Equivalent Circuit for UHV Capacitor Voltage Transformer

WANG Ping; ZHANG Guangyong; LI Huiqi; LI Xuan

doi:10.13296/j.1001-1609.hva.2017.06.004

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Modeling the Wideband Passive Equivalent Circuit for UHV Capacitor Voltage Transformer

更新时间：2025-04-26

- Modeling the Wideband Passive Equivalent Circuit for UHV Capacitor Voltage Transformer
- High VoltageApparatus Vol. 53, Issue 6, Pages: 19-24+29(2017)
- 作者机构：
  
  1. 华北电力大学河北省输变电设备安全防御重点实验室
  2. 国网山西省电力公司检修分公司
  3. 国网电力科学研究院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2017.06.004
  CLC： TM451.2
- Published：2017
- 稿件说明：
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[1]王平,张广勇,李慧奇,李璿.特高压电容分压器宽频无源等效电路建模方法[J].高压电器,2017,53(06):19-24+29.

WANG Ping, ZHANG Guangyong, LI Huiqi, et al. Modeling the Wideband Passive Equivalent Circuit for UHV Capacitor Voltage Transformer[J]. High voltageapparatus, 2017, 53(6): 19-24+29.
[1]王平,张广勇,李慧奇,李璿.特高压电容分压器宽频无源等效电路建模方法[J].高压电器,2017,53(06):19-24+29. DOI： 10.13296/j.1001-1609.hva.2017.06.004.

WANG Ping, ZHANG Guangyong, LI Huiqi, et al. Modeling the Wideband Passive Equivalent Circuit for UHV Capacitor Voltage Transformer[J]. High voltageapparatus, 2017, 53(6): 19-24+29. DOI： 10.13296/j.1001-1609.hva.2017.06.004.

摘要

为了提高特高压电容式电压互感器的瞬态性能

分析其在较宽频域内的分压特性

以某公司生产的1 000 kV特高压电容分压器为实验对象

进行了特高压电容分压器阻抗的测量

建立了特高压电容分压器的宽频等效电路模型。首先

测量特高压电容分压器的阻抗;其次

基于测量得到的数据结合矢量匹配法和电路综合理论

建立了特高压电容分压器的宽频等效电路模型

并利用模式搜索算法对等效电路进行无源修正;最后

利用所建立的模型

分析特高压电容分压器在不同频率下的分压特性

为合理设置均压装置以及改善特高压的制造工艺提供理论依据。

Abstract

To improve the transient performance of ultra high voltage（UHV） capacitor voltage transformer and analyze its voltage dividing characteristics in wideband

the impedance of a 1 000 kV capacitor voltage divider was measured

and a wide frequency model of UHV capacitor voltage divider was built.First

the impedance of the capacitor voltage divider was measure.Second

the vector fitting method and circuit synthesis theory as well as the measured data were employed to establish a wideband equivalent circuit model of CVT capacitor voltage divider

and the pattern search algorithm was adopted to optimize the equivalent circuit.Third

the voltage dividing characteristics of the divider at different frequency were analyzed with the proposed model.This study may provide a theoretical reference for reasonable setting of equalizing device and manufacturing process improvement of UHV.

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Related Institution

North China Electric Power University

华北电力大学电力工程系河北保定071003

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