Open AccessReliability evaluation of WAMS using Markov‐based graph theory approach
Author(s) -
Rana Ankur Singh,
Thomas Mini S.,
Senroy Nilanjan
Publication year - 2017
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.2016.0848
Subject(s) - phasor measurement unit , reliability (semiconductor) , reliability engineering , phasor , electric power system , markov chain , computer science , component (thermodynamics) , graph , markov process , markov model , system of measurement , state space , power (physics) , engineering , mathematics , theoretical computer science , statistics , machine learning , physics , quantum mechanics , astronomy , thermodynamics
The reliability analysis of a power system‐wide area measurement system (WAMS) is presented based on a Markov graph theoretic approach. Initially, a phasor measurement unit is considered wherein a state‐space model is used to denote state transitions due to various component failures. This model is then expanded to include different common cause failures and component redundancies. The approach is extended to a regional WAMS and further the impact of the nature and type of communication network of the complete WAMS on the overall system reliability is investigated. The evolution of the overall reliability due to the ageing of individual components is also studied. Finally, sample calculations are presented for the WAMS system currently under consideration in India.