Dynamic equivalent-based reliability evaluation of distribution systems with DGs

Huaizhi Wang, Haofan Lin, Tao Yu, Zhao Xu, Yateendra Mishra

Research output: Journal article publicationJournal articleAcademic researchpeer-review

11 Citations (Scopus)


This study proposes a novel dynamic reliability network-equivalent approach (RNEA) for distribution generations (DGs) enhanced distribution system. This method includes a bottom-up process and a top-down process, which are developed based on equivalent principle, and the synthesis of both processes yields the reliability performance of any node in the system. In addition, a novel switch zone concept is defined and introduced into the bottom-up equivalent process as to save the computation cost. Besides, a hybrid restoration model is proposed to account for the practical restoration process in power grids, and solved using particle swarm optimisation. The most significant of the proposed approach over other equivalent methods such as section technique, RNEA, and zone-branch method is that it provides a more generalised element-by-element equivalent approach that can greatly simplify the network for reliability assessment irrespective of the network topology. The proposed methodology has been successfully tested on a real 362-node urban distribution system in China, with and without DGs considered.
Original languageEnglish
Pages (from-to)2285-2294
Number of pages10
JournalIET Generation, Transmission and Distribution
Issue number10
Publication statusPublished - 7 Jul 2016

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


Dive into the research topics of 'Dynamic equivalent-based reliability evaluation of distribution systems with DGs'. Together they form a unique fingerprint.

Cite this