All-application-field Compensation Method for Improving Measurement Accuracy of Synchrophasor Measurement Unit for Distribution Network

Zhihua WANG; Bonian SHI; Hao LIU; Quan XU; Sudi XU; Yuanqing XIAO

doi:10.7500/AEPS20191116004

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All-application-field Compensation Method for Improving Measurement Accuracy of Synchrophasor Measurement Unit for Distribution Network

Application of Synchrophasor Measurement Technology in Distribution Network | 更新时间：2025-06-16

- All-application-field Compensation Method for Improving Measurement Accuracy of Synchrophasor Measurement Unit for Distribution Network
- Automation of Electric Power Systems Vol. 44, Issue 18, Pages: 39-45(2020)
- 作者机构：
  
  1.北京四方继保自动化股份有限公司，北京市 100085
  2.华北电力大学电气与电子工程学院，北京市 102206
  3.中国南方电网科学研究院有限责任公司，广东省广州市 510663
- 作者简介：
- 基金信息：
  
  National Key R&D Program of China
- DOI：10.7500/AEPS20191116004
  CLC：
- Received：16 November 2019，
  
  Revised：2020-03-13，
  
  Published Online：13 August 2020，
  
  Published：25 September 2020
- 稿件说明：
移动端阅览
王志华,时伯年,刘灏等.提高配电网PMU测量精度的全景补偿方法[J].电力系统自动化,2020,44(18):39-45.

WANG Zhihua,SHI Bonian,LIU Hao,et al.All-application-field Compensation Method for Improving Measurement Accuracy of Synchrophasor Measurement Unit for Distribution Network[J].Automation of Electric Power Systems,2020,44(18):39-45.
王志华,时伯年,刘灏等.提高配电网PMU测量精度的全景补偿方法[J].电力系统自动化,2020,44(18):39-45. DOI： 10.7500/AEPS20191116004.

WANG Zhihua,SHI Bonian,LIU Hao,et al.All-application-field Compensation Method for Improving Measurement Accuracy of Synchrophasor Measurement Unit for Distribution Network[J].Automation of Electric Power Systems,2020,44(18):39-45. DOI： 10.7500/AEPS20191116004.

摘要

配电网线路长度通常较短，且受噪声及谐波影响严重，要实现配电网的监测、控制和状态估计，亟须研制配电网同步相量测量装置（D-PMU）。高精度的测量是配电网可观可控的基石，而交流采样环节是保证D-PMU测量性能的核心。基于交流采样环节的硬件误差来源分析，提出了误差渐进减小的工程全方位应用场景补偿方法（简称全景补偿方法）：①通过出厂标校，消除系统固定误差；②通过三次多项式拟合进行全量程补偿，被试装置达到应用需求精度；③通过二次多项式拟合进行温漂补偿，提升D-PMU现场运行精度。基于提出的全景补偿方法改进D-PMU，搭建了人工模拟环境，测试结果表明所提方法可有效提高D-PMU相量测量精度。

Abstract

The distribution network is seriously affected by noise and harmonics and its line length is usually short

so it is necessary to develop synchrophasor measurement unit for distribution network (D-PMU) to realize the monitoring

control and state estimation of distribution network. High-precision measurement is the cornerstone for the observability and controllability of the distribution network

and the alternating current (AC) sampling module is the kernel of the measurement of D-PMU. Based on the analysis of the source of hardware error in AC sampling module

an all-application-field compensation method in the engineering with gradual error reduction is proposed to improve the measurement accuracy: ① through factory calibration

the fixed system error is eliminated; ② through full-range compensation based on the cubic polynomial fitting

the tested device can meet the accuracy required in application; ③ through temperature drift compensation based on the quadratic polynomial fitting

the field operation accuracy of D-PMU is improved. Using the proposed all-application-field compensation method

a D-PMU is modified for verification

and the artificial simulation environment is built. Test results show that the all-application-field compensation method can effectively improve the phasor measurement accuracy of D-PMU.

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references

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