Open AccessZoning‐based candidate bus selection for dynamic VAR planning in power system towards voltage resilience
Author(s) -
Chi Yuan,
Xu Yan
Publication year - 2020
Publication title -
iet generation, transmission and distribution
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.92
H-Index - 110
eISSN - 1751-8695
pISSN - 1751-8687
DOI - 10.1049/iet-gtd.2019.1049
Subject(s) - zoning , contingency , voltage , resilience (materials science) , electric power system , computer science , transient voltage suppressor , reliability engineering , voltage drop , engineering , cluster analysis , power (physics) , artificial intelligence , electrical engineering , philosophy , linguistics , physics , quantum mechanics , thermodynamics , civil engineering
Dynamic VAR planning for voltage stability enhancement is a challenging topic for power systems with a growing penetration level of wind power. As a critical step of VAR planning, candidate bus selection (CBS) can reduce the scale of the problem and improve the optimality of the planning decisions. This study proposes a new zoning‐based CBS method towards multiple voltage resilience indices. First, a set of resilience‐oriented metrics are proposed to comprehensively evaluate voltage performance in pre‐contingency and post‐contingency stages, considering the extent of the voltage deviation and voltage recovery time, as well as the post‐contingency steady‐state voltage profile. Then, a zoning‐based approach is developed based on fuzzy C‐means clustering and Morris screening to categorise buses into different zones with capacity sensitivity analysis. Finally, a comprehensive multi‐objective CBS scheme is proposed for voltage resilience enhancement. Simulation results show that, compared with conventional approaches, the method can achieve more voltage stability improvement with the fewer or the same number of candidate buses.