Time-delay Estimation of Partial Discharge UHF Pulse Signals Based on Interpolation Cross-relation Algorithm

TANG Lin; HU Yue; WANG Hongbin; YANG Yan; JIANG Xiuchen

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Time-delay Estimation of Partial Discharge UHF Pulse Signals Based on Interpolation Cross-relation Algorithm

更新时间：2025-12-08

- Time-delay Estimation of Partial Discharge UHF Pulse Signals Based on Interpolation Cross-relation Algorithm
- Vol. 41, Issue 10, Pages: 3320-3325(2015)
- 作者机构：
  
  1. 上海交通大学电气工程系
  2. 广东电网有限责任公司电力科学研究院
  3. 国网重庆市电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
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- Published Online：30 October 2015，
  
  Published：2015
- 稿件说明：
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TANG Lin, HU Yue, WANG Hongbin, et al. Time-delay Estimation of Partial Discharge UHF Pulse Signals Based on Interpolation Cross-relation Algorithm[J]. 2015, 41(10): 3320-3325.
DOI：

TANG Lin, HU Yue, WANG Hongbin, et al. Time-delay Estimation of Partial Discharge UHF Pulse Signals Based on Interpolation Cross-relation Algorithm[J]. 2015, 41(10): 3320-3325. DOI：

摘要

为了提高用于特高频局部放电检测与定位所需的多元传感器阵列间的信号时延精度和降低特高频检测系统成本

提出了一种先对低采样频率采集所得的局部放电特高频脉冲信号特征区域进行三次样条插值

后利用广义相关法估计信号时延的新方法。仿真实验研究和模拟实验结果表明:对于满足采样定理采集所得的低采样频率局部放电信号

该方法比传统广义相关法对信号时延的估计精度更高

可有效减小实际时差为采样间隔非整数倍所带来的时延误差;信号两点间插值数为4时

算法最优

时延误差可控制在半个系统采样间隔以内。

Abstract

In order to improve the precision of time-delays calculated from a multi-element ultra-high frequency（UHF）sensor array and reduce the cost of partial discharge detection system

we put forward a new method to estimate the time-delay. This method interpolates some values into the feature area of UHF signal sampled at a low sample rate based on interpolation cross-relation algorithm and then uses cross-correlation method to estimate the time-delay. Through simulation tests and experimental results

conclusions are obtained as follows. Firstly

compared with traditional cross-correlation method

the new method can effectively narrow the error generated by limit of the system sample rate

especially when the real time-delay is not a integer times of sampling interval. Moreover

when the number of interpolating value between two original signal points is four

the method becomes optimal and can narrow the errors below a half sample interval.

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Pattern Recognition for Partial Discharge Based on Multi-feature Fusion Technology

Multi-source PD Location Algorithm Considering PD Signal Propagation Characteristics

Design of External Ultra-high Frequency Partial Discharge Sensor for Large Transformer

Ultra-high Frequency Multi-source Partial Discharge Direction of Arrival Estimation Method Based on Virtual Array Extension

Partial Discharge Direction Finding Method Based on Received Signal Strength and Circular UHF Wireless Sensor Array

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