基于故障树及贝叶斯网络的继电保护系统风险评估及故障定位方法
作者:
作者单位:

作者简介:

通讯作者:

中图分类号:

TM731

基金项目:

国家电网公司科技项目(5100-201955016A-0-0-00)


Fault positioning and risk assessment method of relay protection based on fault tree and Bayesian network
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    继电保护系统故障树是保护系统危险性辨识和评价的重要工具。针对故障树顶级事件发生率难以精确获取、故障树不能进行反向推理等不足,提出基于故障树和贝叶斯网络的继电保护故障风险评估方法:正向上,依据保护实时运行数据确定贝叶斯网络根节点(对应故障树基本事件)故障状态,结合贝叶斯网络推理给出贝叶斯网络叶节点(对应故障树顶级事件)的故障概率,实现保护系统的先验风险预测;反向上,由贝叶斯网络叶节点故障,结合贝叶斯条件概率公式,计算贝叶斯网络根节点的故障概率,实现故障原因的后验定位及溯源。所提方法为提高保护系统可靠性和进行故障诊断提供依据。

    Abstract:

    The fault tree of the relay protection system is an important tool for risk identification and evaluation of the system. To solve the difficulty in precisely obtaining the toplevel event rate of fault tree, and the inability of reverse reasoning of fault trees, a fault risk assessment method for relay protection which is based on the fault tree and the Bayesian network is proposed. In the positive direction, the fault state of the root nodes in the Bayesian network (corresponding to the basic event of the fault tree) can be confirmed according to the realtime operational data of relay protection. Combined with by the Bayesian network reasoning, the fault probability of the leaf node of Bayesian network (corresponding to the top event of the fault tree) can then be generated, thus to realize the risk prediction of the protection system. In the reserve direction, the leaf nodes of Bayesian network are combined with the Bayesian conditional probability formula, to calculate the failure probability of the root nodes of the Bayesian network, therefore the positioning and tracing of the fault cause can be achieved. The proposed method can provide bases for the reliability improvement and the fault diagnosis of the protection system.

    参考文献
    相似文献
    引证文献
引用本文

王文焕,郭鹏,祝洁,杨国生,詹荣荣,张烈.基于故障树及贝叶斯网络的继电保护系统风险评估及故障定位方法[J].电力科学与技术学报,2021,(4):81-90. Wang Wenhuan, Guo Peng, Zhu Jie, Yang Guosheng, Zhan Rongrong, Zhang Lie. Fault positioning and risk assessment method of relay protection based on fault tree and Bayesian network[J]. JOURNAL OF EIECTRIC POWER SCIENCE AND TECHNOLOGY,2021,(4):81-90.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2021-08-28
  • 出版日期: