Study on the Relationship Between Motor Output Shaft Torque and Motor Current of Disconnector Operation Mechanism

HUANG Yuchen; RUAN Jiangjun; QIU Zhibin; WU Jun; ZHANG Enwei; WEI Xiaowei

doi:10.13296/j.1001-1609.hva.2015.06.025

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Study on the Relationship Between Motor Output Shaft Torque and Motor Current of Disconnector Operation Mechanism

更新时间：2025-04-26

- Study on the Relationship Between Motor Output Shaft Torque and Motor Current of Disconnector Operation Mechanism
- High VoltageApparatus Vol. 51, Issue 6, Pages: 139-144(2015)
- 作者机构：
  
  1. 武汉大学电气工程学院
  2. 国网冀北电力有限公司检修分公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2015.06.025
  CLC： TM564.1
- Published：2015
- 稿件说明：
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[1]黄聿琛,阮江军,邱志斌,吴军,张恩伟,魏晓伟.隔离开关操动机构电机输出轴扭矩和电流关系的研究[J].高压电器,2015,51(06):139-144.

HUANG Yuchen, RUAN Jiangjun, QIU Zhibin, et al. Study on the Relationship Between Motor Output Shaft Torque and Motor Current of Disconnector Operation Mechanism[J]. High voltageapparatus, 2015, 51(6): 139-144.
[1]黄聿琛,阮江军,邱志斌,吴军,张恩伟,魏晓伟.隔离开关操动机构电机输出轴扭矩和电流关系的研究[J].高压电器,2015,51(06):139-144. DOI： 10.13296/j.1001-1609.hva.2015.06.025.

HUANG Yuchen, RUAN Jiangjun, QIU Zhibin, et al. Study on the Relationship Between Motor Output Shaft Torque and Motor Current of Disconnector Operation Mechanism[J]. High voltageapparatus, 2015, 51(6): 139-144. DOI： 10.13296/j.1001-1609.hva.2015.06.025.

摘要

为了通过电机电流检测隔离开关的机械故障

对GW6H-252型隔离开关电机输出轴扭矩和电机相电流的关系进行研究。研制出一套电流监测系统

现场监测隔离开关动作过程中电机定子相电流和电机输出轴扭矩

采用希尔伯特变换提取电流包络

建立电机输出轴扭矩和电流包络的函数关系

并采用最小二乘法进行曲线拟合。研究结果表明

GW6H-252型隔离开关电机输出轴扭矩和电机相电流包络之间存在二次函数关系

函数相关度高达0.98

因此可以通过监测电机定子相电流对电机输出轴扭矩峰值进行预测

进而检测隔离开关机械故障。

Abstract

In order to detect the mechanical fault of disconnector through motor current

the relationship between the motor output shaft torque and the motor phase current of GW6H-252 type disconnector is studied. A set of current monitoring system is developed. In the operation process of disconnector

the motor output shaft torque and the motor stator phase current are monitored

the current envelope is extracted by Hilbert transform

the motor output shaft torque and current envelope function relationship is established

and its curve fitting is done by least square method. As a result of the research

there is a quadratic function relationship between the motor output shaft torque and the phase current envelope of GW6H-252 type disconnector

and the R-square is as high as 0.98

so the peak of motor output shaft torque waveform can be predicted by monitoring the motor current and the mechanical fault of disconnector can be detected.

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