Study on Influence of Electric Field on Measurement Error Characteristics of CVT

XU Hongwei; LI Pengcheng; CONG Zhongxiao; DU Lin; HE Peng; ZHAN Deming

doi:10.14044/j.1674-1757.pcrpc.2020.03.014

您当前的位置：

首页 >

文章列表页 >

Study on Influence of Electric Field on Measurement Error Characteristics of CVT

更新时间：2024-09-14

- Study on Influence of Electric Field on Measurement Error Characteristics of CVT
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 41, Issue 3, Pages: 79-86(2020)
- 作者机构：
  
  1. 贵州电网有限责任公司计量中心
  2. 重庆大学输配电装备及系统安全与新技术国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2020.03.014
  CLC： TM451.2
- Published：2020，
- 稿件说明：
移动端阅览
[1]徐宏伟,李鹏程,丛中笑,杜林,贺鹏,詹得铭.电场对CVT计量误差特性影响研究[J].电力电容器与无功补偿,2020,41(03):79-86.

XU HONGWEI, LI PENGCHENG, CONG ZHONGXIAO, et al. Study on Influence of Electric Field on Measurement Error Characteristics of CVT. [J]. Power capacitor & reactive power compensation, 2020, 41(3): 79-86.
[1]徐宏伟,李鹏程,丛中笑,杜林,贺鹏,詹得铭.电场对CVT计量误差特性影响研究[J].电力电容器与无功补偿,2020,41(03):79-86. DOI： 10.14044/j.1674-1757.pcrpc.2020.03.014.

XU HONGWEI, LI PENGCHENG, CONG ZHONGXIAO, et al. Study on Influence of Electric Field on Measurement Error Characteristics of CVT. [J]. Power capacitor & reactive power compensation, 2020, 41(3): 79-86. DOI： 10.14044/j.1674-1757.pcrpc.2020.03.014.

摘要

实际运行表明:电场是影响电容式电压互感器（CVT）计量误差的重要因素之一。为了分析周围电场对CVT计量误差特性的影响

文中采用有限元仿真软件分析周围物体、高压引线及相间干扰对220 kV等级CVT计量误差特性的影响。仿真结果表明:随着物体电位U的增加

CVT计量误差基本呈线性增加变化

且线性度与物体距离D有关;CVT计量误差随着物体与CVT之间距离D的增加呈逐渐减小趋势

当距离大于3 m时

可以忽略周围物体对220 kV CVT计量误差造成的影响。高压引线对CVT误差的影响与高压引线的几何参数即引线的长度、直径以及其与CVT水平方向的夹角有关。对于三相220 kV CVT而言

在考虑变电站电气设备实际布置与安全规定下

相间距离选择为4 m最佳。同时在仿真基础上

搭建试验平台

验证了仿真结果的正确性。

Abstract

It is shown by the actual operation that the electric field is one of the important factors affecting the measurement error of the capacitor voltage transformer（CVT）.In order to analyze the influence of electric field on CVT measurement error

finite element simulation software is used in this paper to analyze the influence of surrounding objects

high voltage leads and phase interference on the error characteristics of220 kV CVT.It is shown by the simulation result that the CVT measurement error increases linearly with the surrounding object potential U

and the linearity is related to the object distance D.As the object distance D increases the CVT measurement error gradually decreases.When the distance is greater than 3 m

the error caused by the surrounding objects to the 220 kV CVT is negligible.The effect of the high voltage lead on the CVT error is related to the length and diameter of the lead and its angle to the horizontal direction of the CVT.For the three-phase 220 kV CVT

considering the actual arrangement and safety regulations of the substation electrical equipment

the phase-to-phase distance is chosen to be 4 m optimal.Meanwhile

on the basis of simulation

the experimental platform is built to verify the correctness of the simulation results.

关键词

电场电容式电压互感器（CVT）误差特性杂散电容相间干扰

Keywords

electric fieldcapacitor voltage transformererror characteristicstray capacitanceinterphase interference

references

Views

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Research and Development of 765kV Capacitor Voltage Transformer

High Frequency Characteristics Measurement and Influence Factors of Capacitor Voltage Transformer

Operation Fault Monitoring on Capacitive Voltage Transformer

Study on Maloperation of GAP for Extra-high Voltage Series Compensation Device

Comprehensive Analysis on Defects of Grading Capacitor for 500 kV Circuit Breaker

Related Author

Wang Xiang-fang

LI Bin~1

JIN Xiang-tao~1

SUN Dong~2

WANG Hong-peng~1

GAO Shu-guo1

YUE Guo-liang2

LIU Hai-feng2

Related Institution

Xi′an XD Power Capacitor Co.,Ltd.,Xi′an

New Northeast Electric

长春煤炭设计研究院

Hebei Electric Power Test Research Institute

Hebei Electric Power Company

⁰