Identification method of key transmission lines in power system

被引：0
|
作者：
Kang Z. [1 ]
Li C. [1 ]
Yu H. [1 ]
Zheng S. [1 ]
Ri K. [1 ]
机构：
[1] College of Control Science and Engineering, China University of Petroleum, Qingdao
来源：
Dianli Zidonghua Shebei/Electric Power Automation Equipment | 2020年 / 40卷 / 04期
关键词：
Electric power systems; Generalized entropy index; Katz-Bonacich centrality; Load rate; Phase angle segmentation areas; Transmission lines;
D O I：
10.16081/j.epae.202004017
中图分类号：
学科分类号：
摘要：
The identification of key transmission lines is helpful to prevent power grid disasters and improve the safety and stability of power system. An identification method of key transmission lines in power system is presented by evaluating the impact of power flow after branch outage. Firstly, the phase angle segmentation area is defined based on the theory of equal phase angle line, and the transmission lines are partitioned according to the phase angle segmentation area and electrical distance. Based on the generali-zed entropy index theory, the generalized entropy index of power flow growth rate is defined to evaluate the distribution equilibrium degree of power flow impact after branch outage. Then, from the perspective of network topology structure, the Katz-Bonacich centrality index of the edge is defined to evaluate the importance of transmission line location, and the redundancy index is also defined to evaluate the system's resistance ability to power flow impact. Finally, based on the principle of cloud model, the evaluation indexes are transformed into cloud model, and the evaluation results are presented in the form of cloud map. The IEEE 30-bus system and New England 10-machine 39-bus system are simulated, and the results verify the correctness of the proposed method. © 2020, Electric Power Automation Equipment Press. All right reserved.
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页码：63 / 70
页数：7
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