Localization of Partial Discharge Signals Based on Ultra-high-frequency Antenna Array and Analysis of Influence Factors

XU Yuefeng; REN Shuangzan; ZHU Mingxiao; WU Hao; LIU Jing; LI Yuan; ZHANG Guanjun

doi:10.13296/j.1001-1609.hva.2019.02.008

您当前的位置：

首页 >

文章列表页 >

Localization of Partial Discharge Signals Based on Ultra-high-frequency Antenna Array and Analysis of Influence Factors

更新时间：2025-04-26

- Localization of Partial Discharge Signals Based on Ultra-high-frequency Antenna Array and Analysis of Influence Factors
- High VoltageApparatus Vol. 55, Issue 2, Pages: 53-60(2019)
- 作者机构：
  
  1. 国网陕西省电力公司
  2. 国网陕西省电力公司电力科学研究院
  3. 西安交通大学电力设备电气绝缘国家重点实验室
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2019.02.008
  CLC： TM855
- Published：2019
- 稿件说明：
移动端阅览
[1]徐越峰,任双赞,朱明晓,吴昊,刘晶,李元,张冠军.基于特高频天线阵列的局部放电信号定位方法及影响因素分析[J].高压电器,2019,55(02):53-60.

XU Yuefeng, REN Shuangzan, ZHU Mingxiao, et al. Localization of Partial Discharge Signals Based on Ultra-high-frequency Antenna Array and Analysis of Influence Factors[J]. High voltageapparatus, 2019, 55(2): 53-60.
[1]徐越峰,任双赞,朱明晓,吴昊,刘晶,李元,张冠军.基于特高频天线阵列的局部放电信号定位方法及影响因素分析[J].高压电器,2019,55(02):53-60. DOI： 10.13296/j.1001-1609.hva.2019.02.008.

XU Yuefeng, REN Shuangzan, ZHU Mingxiao, et al. Localization of Partial Discharge Signals Based on Ultra-high-frequency Antenna Array and Analysis of Influence Factors[J]. High voltageapparatus, 2019, 55(2): 53-60. DOI： 10.13296/j.1001-1609.hva.2019.02.008.

摘要

基于移动式特高频（UHF）天线阵列的敞开式变电站局部放电巡检与定位系统获得应用

但天线间距一般较小

使放电源距离定位准确度较低。文中提出了基于时差法的放电源波达方向估计方法

利用两对相交天线UHF信号入射角与方位角、俯仰角的几何关系

推导得到方位角与俯仰角的计算公式;为了分析时差误差对方位角及俯仰角估计误差的影响

建立了基于蒙特卡罗法的波达方向估计误差仿真模型

进而对放电源位置、阵列尺寸及天线阵列布置对方位角与俯仰角估计准确度的影响进行分析;实验测试了方位角与俯仰角的估计准确度

最后将其应用于现场220 kV变电站的局放检测。分析结果表明

随放电源俯仰角增大

方位角估计准确度降低

俯仰角估计准确度升高;阵列尺寸大于1 m×1 m时

可以获得较高的估计准确度;矩形阵列是波达方向估计的最优阵列型式。实验结果表明

对于尺寸为4 m×2 m的矩形与菱形天线阵

方位角估计误差均<4°

对于尺寸为0.7 m×0.7 m方阵

俯仰角大于20°时其估计误差<10°。

Abstract

The movable ultra-high-frequency（UHF）antenna array has been applied to partial discharge（PD）monitoring and localization in air-insulated substation（AIS）.Since the antenna array is arranged with small distance

the range of PD source is generally calculated with low-accuracy.This paper presents a direction-of-arrival（DOA）estimation method based on the time difference between antennas.The computation formula of azimuth and elevation angle are derived according to the geometrical relationships between incident angle of UHF signal and azimuth and elevation angles.A simulation model of DOA estimation error based on Monte Carlo method is built to quantify the influence of time difference error.Moreover

the influence of antenna pairs

PD position

distance between antennas and shape of antenna array on DOA accuracy are analyzed.The DOA estimation method is tested with experiments in laboratory.The results indicate that the accuracy of azimuth angle decreases while the accuracy of elevation angle increases when the height of PD source increase.The estimation error of both azimuth and elevation angles decrease when enlarge the distance between antennas.The rectangle array is the optimal configuration for DOA estimation.The estimation error of azimuth angle is less than 4° for rectangle and diamond antenna arrays with size of 4 m×2 m

and the error of elevation angle is less than 10° when it is greater than 20° for rectangle array with size of 0.7 m×0.7 m.

关键词

Keywords

references

Views

106

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Research on Power Cable Buffer Layer Defect Localization Based on Broadband Impedance Spectroscopy

Localization of Partial Discharge Defects in GIS

Localization and Analysis of a Partial Discharge Defects in GIS Solid Insulation

SA-APSO Algorithm and Its Application in Ultrasonic Location of Partial Discharge in Transformer Oil

Study on AC Withstand Voltage Breakdown Discharge Location of GIL Equipment Based on Audible-signal

Related Author

ZOU Xingyu

REN Guangzhen

HUANG Bo

ZHANG Haotian

MU Haibao

CAO Junping

LIAO Chen

BAI Yu

Related Institution

State Grid Zhejiang Electric Power Co., Ltd.

State Grid Zhejiang Electric Power Research Institute

College of Electrical Engineering, Xi’an Jiaotong University

State Grid Wenzhou Power Supply Company

Guangzhou Power Supply Bureau

⁰