华南理工大学学报(自然科学版) ›› 2018, Vol. 46 ›› Issue (4): 85-90,97.doi: 10.3969/j.issn.1000-565X.2018.04.012

• 能源、动力与电气工程 • 上一篇    下一篇

基于随机模糊理论的交直流混联系统风险评估模型

董萍1,吴华仪2   

  1. 华南理工大学 电力学院,广东 广州 510640
  • 收稿日期:2017-10-17 修回日期:2017-12-13 出版日期:2018-04-25 发布日期:2018-03-01
  • 通信作者: 董萍( 1978-) ,女,博士,副教授,主要从事电力系统运行优化与控制研究 E-mail:epdping@scut.edu.cn
  • 作者简介:董萍( 1978-) ,女,博士,副教授,主要从事电力系统运行优化与控制研究
  • 基金资助:
    国家重点基础研究发展计划( 973 计划) 项目( 2013CB228205) ; 国家自然科学基金资助项目( 51107042) ; 华南理 工大学中央高校重点基金资助项目( 2015ZZ017) 

Risk Assessment Model of AC/DC Hybrid System Based on Random Fuzzy Theory
 

DONG Ping WU Huayi    

  1.   School of Electric Power,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2017-10-17 Revised:2017-12-13 Online:2018-04-25 Published:2018-03-01
  • Contact: 董萍( 1978-) ,女,博士,副教授,主要从事电力系统运行优化与控制研究 E-mail:epdping@scut.edu.cn
  • About author:董萍( 1978-) ,女,博士,副教授,主要从事电力系统运行优化与控制研究
  • Supported by:
     Supported by the National Program on Key Basic Research Project of China( 973 Program) ( 2013CB228205) and the National Natural Science Foundation of China( 51107042) 

摘要: 对交直流混联输电系统的运行风险评估中,由于历史数据的缺失及气候等因素 对数据测量精度的影响,输电线路的强迫停运率往往具有随机模糊的特性. 文中提出了统 一的交直流系统的随机模糊不确定性模型,并将随机模糊理论运用于交直流系统的运行 风险评估中. 该模型考虑了随机和模糊的特性,然后根据运行风险评估的定义给出了随机 模糊不确定性运行风险评估指标,最后结合交直流系统的预想事故集用随机模糊模拟技 术得到系统的运行风险指标期望值. 文中还将该模型应用在改进的 IEEE-30 节点交直流 系统中,算例结果证明了该模型的可行性. 

关键词: 交直流, 混联输电系统, 运行风险, 随机模糊理论 

Abstract:  In the operational risk assessment of AC/DC hybrid transmission system,the failure rate of transmission line is often characteristic of being random and fuzzy because of various uncertainties due to the lack of historical data and the influence of climate and other factors on the accuracy of data measurement. In this paper,the stochastic fuzzy uncertainty model of AC/DC transmission lines is put forward and the random fuzzy theory is applied in the operational risk assessment of AC/DC transmission system. Firstly,the model takes into account the random and fuzzy characteristics. Then the operational risk assessment index based on the definition of operational risk assessment is obtained. Finally,the expected value of the operational risk index is obtained by the use of the stochastic fuzzy simulation process combining the contingency set of AC/DC system. Take IEEE-30 AC/DC hybrid system for example and the results show that the model proposed in this paper is effective.

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