Identification of Critical Transmission Lines in Complex Power Networks

Energies

Ziqi Wang¹  Dahai Zhang¹  Jinghan He¹  Peter Crossley²  Alexandru Nechifor² 

[1] Power System Protection and Control Research Laboratory, Beijing Jiaotong University, Shangyuancun No. 3, Haidian District, Beijing 100044, China;School of Electrical and Electronic Engineering, The University of Manchester, Manchester M13 9PL, UK;

关键词: critical line;    vulnerability;    power flow redistribution;    integrated betweenness;    cyclic addition algorithm;   

DOI  :  10.3390/en10091294

来源: DOAJ

【 摘 要 】

Growing load demands, complex operating conditions, and the increased use of intermittent renewable energy pose great challenges to power systems. Serious consequences can occur when the system suffers various disturbances or attacks, especially those that might initiate cascading failures. Accurate and rapid identification of critical transmission lines is helpful in assessing the system vulnerability. This can realize rational planning and ensure reliable security pre-warning to avoid large-scale accidents. In this study, an integrated “betweenness” based identification method is introduced, considering the line’s role in power transmission and the impact when it is removed from a power system. At the same time, the sensitive regions of each line are located by a cyclic addition algorithm (CAA), which can reduce the calculation time and improve the engineering value of the betweenness, especially in large-scale power systems. The simulation result verifies the effectiveness and the feasibility of the identification method.

【 授权许可】

Unknown