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access icon free Identifying critical components for reliability centred maintenance management of deregulated power systems

© The Institution of Engineering and Technology
Received 20/04/2014, Accepted 20/11/2014, Revised 30/10/2014, Published 27/03/2015

Competition in the electric power industry urges utilities to not only reduce the investment costs, but also to reasonably cut the operation and maintenance expenses as much as possible, while keeping both power quality and reliability requirements met. Reliability-centred maintenance (RCM) has been proven to be in response to this dilemma in power systems and has been yet successfully applied in various engineering contexts. This study introduces a novel approach, as of the first steps of RCM implementation in composite power generation and transmission systems, to identify the critical components for the main sake of a more focused maintenance management. Criticality evaluation is, here, concerned with components outage occurrence possibilities and cost-based consequences. A realistic market model has been implemented to account for the components outage consequences to the system different participants, that is, generation companies and distribution companies. The presented methodology is able to efficiently recognise the individual importance and contribution of each component in the cases of not only first order but also higher order contingencies. For the sake of demonstration, the proposed approach is applied to the IEEE reliability test system and IEEE 118-Bus test system, and the obtained results are discussed in detail.

Inspec keywords: power markets; electricity supply industry deregulation; power supply quality; power generation reliability; maintenance engineering; power transmission reliability

Other keywords: critical component identification; composite power transmission systems; RCM; outage consequences; IEEE 118-bus test system; IEEE reliability test system; electric power industry; maintenance expenses; deregulated power systems; power reliability requirements; distribution companies; operation expenses; composite power generation systems; realistic market model; generation companies; reliability centred maintenance management; criticality evaluation; power quality requirements

Subjects: Power system management, operation and economics; Plant engineering, maintenance and safety; Power supply quality and harmonics; Reliability

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