A novel approach of closeness centrality measure for voltage stability analysis in an electric power grid

Isaiah G. Adebayo, Yanxia Sun

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Modern power systems are increasingly becoming more complex and thus become vulnerable to voltage collapse due to constant increase in load demand and introduction of new operation enhancement technologies. In this study, an approach which is based on network structural properties of a powersystemisproposedfor the identificationof criticalnodes that are liable to voltage instability. The proposed Network Structurally Based Closeness Centrality (NSBCC) is formulated based on the admittance matrix between the interconnection of load to load nodes in a power system. The vertex (node) that has the highest value of NSBCC is taken as the critical node of the system. To demonstrate the significance of the concept formulated, the comparative analysis of the proposed NSBCC with the conventional techniques such as Electrical Closeness Centrality (ECC),Closeness VoltageCentrality(CVC)andModal Analysis is performed. The effectiveness of all the approaches presented is tested on both IEEE 30 bus and the Southern Indian 10-bus power systems. Results of simulation obtained show that the proposedNSBCC could serve as valuable tool for rapid real time voltage stability assessment in a power system.

Original languageEnglish
Article number0013
JournalInternational Journal of Emerging Electric Power Systems
Volume21
Issue number3
DOIs
Publication statusPublished - 1 Jun 2020

Keywords

  • Closeness centrality
  • Critical node
  • Network structure
  • Power system
  • Voltage stability

ASJC Scopus subject areas

  • Energy Engineering and Power Technology

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