Assessment Method of CVT Metering Error Based on WMPCA

CHANG Yunsong; WANG Yiping; WU Yanping; CHE Jingwen; CHEN Shi; ZOU Mei

doi:10.14044/j.1674-1757.pcrpc.2021.03.013

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Assessment Method of CVT Metering Error Based on WMPCA

更新时间：2024-09-14

- Assessment Method of CVT Metering Error Based on WMPCA
- POWER CAPACITOR & REACTIVE POWER COMPENSATION Vol. 42, Issue 3, Pages: 79-83(2021)
- 作者机构：
  
  1. 云南电网有限责任公司曲靖供电局
  2. 南瑞集团有限公司
  3. 国网电力科学研究院武汉南瑞有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.14044/j.1674-1757.pcrpc.2021.03.013
  CLC： TM451.2
- Published：2021，
- 稿件说明：
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[1]昌云松,王义平,武艳萍,车静文,陈适,邹梅.基于WMPCA的CVT计量误差评估方法[J].电力电容器与无功补偿,2021,42(03):79-83.

CHANG YUNSONG, WANG YIPING, WU YANPING, et al. Assessment Method of CVT Metering Error Based on WMPCA. [J]. Power capacitor & reactive power compensation, 2021, 42(3): 79-83.
[1]昌云松,王义平,武艳萍,车静文,陈适,邹梅.基于WMPCA的CVT计量误差评估方法[J].电力电容器与无功补偿,2021,42(03):79-83. DOI： 10.14044/j.1674-1757.pcrpc.2021.03.013.

CHANG YUNSONG, WANG YIPING, WU YANPING, et al. Assessment Method of CVT Metering Error Based on WMPCA. [J]. Power capacitor & reactive power compensation, 2021, 42(3): 79-83. DOI： 10.14044/j.1674-1757.pcrpc.2021.03.013.

摘要

传统CVT计量误差评估方法具有一定的局限性

提出一种基于WMPCA的自适应误差评估方法。该方法采用移动窗原理和PCA方法实现计量误差Q统计阈值的更新

对比传统PCA和WMPCA的评估效果。研究表明

在长时间观测中

WMPCA方法比传统主成分方法更适用于评估长期运行的CVT

评估精确度更高;WMPCA方法适用于频繁变化的极端温度环境。本文方法可为长期运行的0.2级CVT计量误差评估提供一定的参考。

Abstract

The traditional metering error assessment method of CVT has some limitations. In this paper

a kind of adaptive error assessment method based on WMPCA is proposed. This method adopts the moving window principle and PCA method to achieve the update of the statistical threshold of metering error Q and to compare the assessment results of traditional PCA and WMPCA. It is shown by the study that in the longterm observation

WMPCA method is

compared to the traditional principal method

more applicable to assess CVT in long term operation and the assessment accuracy is higher. The WMPCA method is applicable for the extreme temperature environment with frequent variation. The method in this paper can provide some reference for the metering error assessment of 0.2 CVT in long-term operation.

关键词

WMPCA电容式电压互感器计量误差统计量评估温度变化

Keywords

WMPCAcapacitor voltage transformermetering errorstatistical magnitudeassessmenttemperature variation

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