中国电力 ›› 2014, Vol. 47 ›› Issue (5): 136-140.DOI: 10.11930/j.issn.1004-9649.2014.5.136.4

• 新能源 • 上一篇    下一篇

基于熵权修正的风电机组可靠性模糊评价方法

张穆勇1, 霍娟2, 芮晓明1   

  1. 1. 华北电力大学 能源动力与机械工程学院,北京 102206;
    2. 华北电力大学 科技学院,河北 保定 071051
  • 收稿日期:2014-01-20 出版日期:2014-05-31 发布日期:2015-12-21
  • 作者简介:张穆勇(1977-),男,山东梁山人,博士研究生,从事电力设备可靠性评估及风力发电技术与设备研究。E-mail: zhangmuyong@126.com

Design of Coordinated Controller for Micro-grid Based on Multi-Mode Self-adjustment Strategy

HUANG Xiu-qiong1, QUAN Wen-lin2, LIU Xian-ming1, JING Tian-jun2, YANG Ren-gang2   

  1. 1. Electric Power Company of Guangxi, Guangxi, Nanning 530023, China;
    2. China Agricultural University, College of Information and Electrical Engineering, Beijing 100083, China
  • Received:2014-01-20 Online:2014-05-31 Published:2015-12-21
  • Supported by:
    This work is supported by National High Technology Research and Development Program of China (863 Program) (2012AA050217)

摘要: 风电机组的可靠性水平是反映机组性能的重要指标之一,通常采用可利用率来评价机组的可靠性,但这种方法有时不能准确反映机组的可靠性水平,同时,在机组的可靠性评价中存在一些模糊性质。针对上述问题,提出一种基于模糊集理论的多指标风电机组可靠性评价方法。该方法基于模糊综合评价的原理,以机组平均故障间隔时间、平均维修时间、停机次数、功率曲线符合率和可利用率作为评价指标,对机组的可靠性进行评价。在权重设置的过程中,为消除专家的主观影响,根据信息熵原理,通过计算指标数据熵权,与专家权重综合成复合权重,再利用加权平均型算子,计算得到机组可靠性评价结果。根据北方某风电场10台风电机组的2012年度运行数据,运用所提方法,对这些机组的可靠性进行了评价。对比分析表明,该方法能够更准确地评价机组可靠性水平。

关键词: 风电机组, 可靠性, 模糊评价, 熵权

Abstract: How to maintain the stability of a micro-grid under different operational conditions is one of the difficulties of micro-grid coordinated control. In the paper, a coordinated control strategy based on multi-state self-adjustment was proposed for hierarchical control scheme of micro-grids. For meeting the construction requirements of the demonstration project, a coordinated controller for micro-grid which has high penetration of wind power and PV was developed. According to the operation status of a micro-grid, the DGs, energy storage and loads can be coordinated to achieve smooth switching under different operation conditions including gird-tied, islanding, standby and shutdown. Finally, simulation software was presented to test the controller. The results verified the practicality of the controller.

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