On-line Generator Partial Discharge Monitoring Technology Based on Quasi-integration

JIA Shaolei

doi:10.13296/j.1001-1609.hva.2014.05.016

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On-line Generator Partial Discharge Monitoring Technology Based on Quasi-integration

更新时间：2025-04-26

- On-line Generator Partial Discharge Monitoring Technology Based on Quasi-integration
- High VoltageApparatus Vol. 50, Issue 5, Pages: 81-86(2014)
- 作者机构：
  
  中国石油大学(华东)石大科技集团
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2014.05.016
  CLC： TM31
- Published：2014
- 稿件说明：
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[1]贾少磊.基于拟积分算法的发电机局部放电在线监测技术的研究[J].高压电器,2014,50(05):81-86.

JIA Shaolei. On-line Generator Partial Discharge Monitoring Technology Based on Quasi-integration[J]. High voltageapparatus, 2014, 50(5): 81-86.
[1]贾少磊.基于拟积分算法的发电机局部放电在线监测技术的研究[J].高压电器,2014,50(05):81-86. DOI： 10.13296/j.1001-1609.hva.2014.05.016.

JIA Shaolei. On-line Generator Partial Discharge Monitoring Technology Based on Quasi-integration[J]. High voltageapparatus, 2014, 50(5): 81-86. DOI： 10.13296/j.1001-1609.hva.2014.05.016.

摘要

局部放电监测是发电机定子绕组绝缘状况监测的有效手段

笔者提出了拟积分（quasi-integration）局部放电信号采集算法

克服了局部放电信号时域处理方法存在的缺陷

提高了系统的精确度和分辨率。文中分析研究了各拟积分参数对积分效果的影响

并选取了适合该系统的拟积分参数

通过FPGA实现了算法。同时在实验室建立了典型的故障放电模型

构建了一套能够对发电机整个定子绕组绝缘劣化状况进行在线监测的系统

分析了该系统所捕获的故障放电图谱的合理性

得到了较好的实验效果

仿真和实验分别验证了拟积分法监测发电机局部放电的可行性和可靠性。

Abstract

The measurement of partial discharge（PD）is an effective method to monitor the insulation condition of stator windings. In this paper

an algorithm for partial discharge signal acquisition based on quasi-integration is proposed to overcome the defect in partial discharge time domain signal processing method

and to improve the accuracy and resolution of the partial discharge monitoring system. The influences of the quasi-integration parameters on pulse resolution and calculation are analyzed

the suited parameters are selected for generator PD monitoring and the algorithm is implemented through FPGA. A typical fault PD model and a on-line generator PD monitoring system are established in laboratory

and the rationality of the captured fault PD spectrum is analyzed. Simulations and experiments verify the feasibility and reliability of the proposed method for monitoring generator PD based on quasi-integration.

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