广西师范大学学报（自然科学版） ›› 2017, Vol. 35 ›› Issue (1): 1-6.doi: 10.16088/j.issn.1001-6600.2017.01.001

• •    下一篇

基于动力学的电网发电机故障恢复策略研究

谢蓉,邹艳丽,傅杰   

  1. 广西师范大学电子工程学院,广西桂林541004
  • 出版日期:2017-01-20 发布日期:2018-07-17
  • 通讯作者: 邹艳丽(1972—),女,河北沧州人,广西师范大学教授,博士。E-mail:zouyanli72@163.com
  • 基金资助:
    国家自然科学基金 (11562003);广西多源信息挖掘与安全重点实验室系统性研究课题(13-A-02-03);广西研究生教育创新计划(YCSZ2014098)

Research on the Strategy of Fault Generator Recovery Based on the Dynamics in the Power Grid

XIE Rong, ZOU Yanli, FU Jie   

  1. College of Electronic Engineering,Guangxi Normal University, Guilin Guangxi 541004, China
  • Online:2017-01-20 Published:2018-07-17

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摘要： 当电网中个别发电机出现故障,不能为电网正常供电时,可能会引起其他发电机的超载级联,进而影响整个电网的正常有效运行。本文基于类Kuramoto模型,提出一种根据脆弱度切除负荷节点的发电机故障恢复策略,研究对比了切除脆弱度大的节点和切除脆弱度小的节点对系统恢复后网络性能的影响。研究表明,切除脆弱度小的节点后,剩余子系统的同步临界耦合强度Kc更小、所有节点频偏中的最大频偏绝对值更小、剩余子系统的负荷最小失同步扰动强度更大。因此,当电网中个别发电机出现故障时,利用本文方法能有效排除故障,使电网恢复稳定运行。

关键词: 类Kuramoto模型;脆弱度;网络性能;同步临界耦合强度;最小失同步扰动强度

Abstract: When a generator breaks down in the power grid, the fault generator can not provide power for the power grid, which may lead to cascading overload of other generators and affect the normal operation of the entire power grid. In this paper, the class Kuramoto model is applied to propose a stratege of power recovery by removing load nodes according to the degree of vulnerability, when a generator breaks down in the power grid. The study also compares the effects of removing the nodes with large degree of vulnerability and removing the nodes with small degree of vulnerability on the network performance. It is shown that when a node with small degree of vulnerability is removed, the critical coupling strength Kc of the remaining subsystems is smaller, the maximum absolute value of node frequency offset |Δw|max is smaller and the minimum load disturbance intensity ΔPmin of the remaining system is larger than those, when a node with large degree of vulnerability is removed. Therefore, when a generator breaks down in the power grid, in order to make the power grid restore to steady-state, using this method can effectively eliminate the fault.

Key words: class Kuramoto model, degree of vulnerability, network performance, critical coupling strength, minimum load disturbance intensity

中图分类号: 

  • TM711
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