电力科学与技术学报2023，Vol.38Issue(6) ：215-224.DOI:10.19781/j.issn.1673-9140.2023.06.023

考虑时序趋势特性的典型场景高压谐波综合评估方法

Comprehensive evaluation method of high-voltage harmonics in typical scenarios considering time series trend characteristics

景巍巍 付慧 程伟添 杨柳 史明明 黄祎 欧阳森
电力科学与技术学报2023，Vol.38Issue(6) ：215-224.DOI:10.19781/j.issn.1673-9140.2023.06.023
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  • 维普
  • 万方数据

考虑时序趋势特性的典型场景高压谐波综合评估方法

Comprehensive evaluation method of high-voltage harmonics in typical scenarios considering time series trend characteristics

景巍巍 1付慧 2程伟添 3杨柳 4史明明 5黄祎 3欧阳森3
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作者信息

  • 1. 国网江苏省电力有限公司连云港供电分公司,江苏 连云港 222004
  • 2. 国网江苏省电力有限公司,江苏 南京 210024
  • 3. 华南理工大学电力学院,广东 广州 510640
  • 4. 国家电网有限公司,北京 100031
  • 5. 国网江苏省电力有限公司电力科学研究院,江苏 南京 211103
  • 折叠

摘要

针对现有评估指标及方法难以区分典型场景中趋势特性差异较大而CP95值相近的谐波曲线,且甚少考虑数据时序趋势特性,无法科学合理地表征谐波水平差异的问题,提出一种考虑时序趋势特性的典型场景高压谐波特性评估方法.首先,基于双激励理论提取数据序列的时序趋势特性,建立涵盖时序趋势特性的包括传统谐波指标及时序趋势特性指标在内的高压谐波综合评估指标体系;然后,考虑所建立的指标间关联特性,提出基于序关系分析和CRITIC法相结合的典型场景高压谐波综合评估模型;最后,算例分析表明所建立的时序趋势特性指标能有效表征数据曲线的时序发展特性,对多条CP95值相近的谐波曲线能有效表征其谐波水平差异.分析结果验证所提方法的合理性和有效性.

Abstract

In response to the challenge of existing assessment indicators and methods struggling to distinguish harmonic curve differences in typical scenarios where trend characteristics vary significantly and CP95 values are close,rarely considering the time series trend characteristics and incapable of representing the differences scientifically and rationally in harmonic levels,a high-voltage harmonic characteristic assessment approach that takes into account the time series trend characteristics of typical scenarios is proposed.Firstly,based on the dual excitation theory,the temporal trend characteristics of the data sequence are extracted,and a comprehensive evaluation index system that encompasses traditional harmonic indicators and temporal trend characteristic indicators is established for high-voltage harmonics covering time series trend characteristics.Subsequently,considering the interrelation characteristics among the established indicators,a comprehensive assessment model is presented for high-voltage harmonics in typical scenarios based on the combination of sequential relationship analysis and the CRITIC method.Finally,case analysis validates the rationality and effectiveness of the proposed method.The case analysis indicates that the established time series trend characteristic indicators can effectively characterize the temporal development characteristics of data curves.For multiple harmonic curves with close CP95 values,they can effectively represent the differences in harmonic levels.Finally,the case analysis demonstrates that the established temporal trend characteristic indicators can effectively represent the temporal development characteristics of data curves.For multiple harmonic curves with close CP95 values,the indicators can efficiently characterize the differences in harmonic levels.The analysis results validate the rationality and effectiveness of the proposed method.

关键词

时序趋势/典型场景/高压谐波/双激励/综合评估

Key words

time series trend/typical scenarios/high voltage harmonic/dual incentive/comprehensive evaluation

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基金项目

国家电网有限公司总部科技项目(5700-202018485A-0-0-00)

出版年

2023
电力科学与技术学报
长沙理工大学

电力科学与技术学报

CSTPCDCSCD北大核心
影响因子：0.85
ISSN：1673-9140
参考文献量17
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