• CSCD核心库收录期刊
  • 中文核心期刊
  • 中国科技核心期刊

电力建设 ›› 2019, Vol. 40 ›› Issue (1): 77-85.doi: 10.3969/j.issn.1000-7229.2019.01.010

• 智能电网 • 上一篇    下一篇

基于时序运行数据的输电网线路重要度评估

杨智宇1,刘俊勇1,刘友波1,温丽丽2   

  1. 1. 智能电网四川省重点实验室(四川大学电气信息学院),成都市 610065;2.国网四川省电力公司,成都市 610065
  • 出版日期:2019-01-01
  • 作者简介:杨智宇(1995),男,硕士,主要研究方向为电力系统中的大数据技术; 刘俊勇(1963),男,教授,博士研究生导师,主要研究方向为电力市场、电力系统稳定与控制、分布式发电及智能电网; 刘友波(1983),男,通信作者,博士,副教授,主要研究方向为主动配电网规划与运行、复杂电力系统连锁故障风险评估及防御; 温丽丽(1982),女,硕士,高级工程师,主要从事电网调度自动化运行方面的管理工作。
  • 基金资助:
    国家自然科学基金项目(51437003)

Transmission Line Importance Evaluation Based on Timing Operating Data

YANG Zhiyu1, LIU Junyong1, LIU Youbo1, WEN Lili2   

  1. 1. Key Laboratory of Smart Grid of Sichuan Province( School of Electrical Engineering and Information, Sichuan University), Chengdu 610065, China;2. State Grid Sichuan Electric Power Company, Chengdu 610065, China
  • Online:2019-01-01
  • Supported by:
    his work is supported by National Natural Science Foundation of China(No. 51437003).

摘要: 针对传统基于物理模型进行仿真模拟的方法,基于电网实际运行数据,提出一种在较长时间尺度下,面向不同运行方式的输电网线路重要度评估框架。首先基于输电网络线路有功潮流数据样本,通过模糊C-均值(fuzzy C-means,FCM)聚类与谱系聚类两步式聚类技术,划分输电网络不同的典型运行方式,建立典型场景;然后提出一种新的时序潮流熵计算方法,并将其和典型相关系数理论结合形成一种新的输电网线路重要度指标,用来对各个运行场景下输电网线路重要度进行评估,克服以往传统关键线路评估方法时不变性的缺点;最后根据复杂网络理论,从输电网络拓扑结构角度对所得结论进行分析对比,证明所提评估方法的合理性。

关键词: 运行数据, 聚类, 时序潮流熵, 典型相关系数, 重要线路评估

Abstract: In view of the traditional way of thinking based on the simulation of physical model, this paper presents a framework for evaluating the importance of transmission lines in different operation modes based on actual operation data. Firstly, according to the active tidal current data samples of power transmission lines, this paper classifies the typical operation modes of power transmission network by two-step clustering technique based on fuzzy C clustering (FCM) and pedigree clustering, and establishes a typical scenario;Then a new method of calculating the entropy of timing power flow is proposed and combined with the typical correlation coefficient theory to form a new transmission line importance index, which is used to evaluate the importance of transmission line in each typical operation scenario to overcome the time-invariant characteristics in the past traditional evaluation of the key lines. Finally, according to the complex network theory, the conclusions of the transmission network are analyzed and compared from the perspective of the topological structure, and a reasonable explanation of the relevant operating characteristics is given to prove the rationality of the framework proposed in this paper.

Key words:  actual operation data, clustering, tidal power flow entropy, typical correlation coefficient, evaluation of the key lines

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