Reliability evaluation and enhancement of distribution systems in the presence of distributed generation based on standby mode

• Published in: International journal of electrical power & energy systems 2012-12, Vol.43 (1), p.607-616
• Main Authors: Arya, Rajesh, Choube, S.C., Arya, L.D.
• Format: Article
• Language: English
• Subjects: Agglomeration; Algorithms; Applied sciences; Differential evolution; Distributed generation; Distribution system; Electric power plants; Electrical engineering. Electrical power engineering; Electrical power engineering; Evolution; Exact sciences and technology; Failure rate; Failure rates; Materials; Mathematical analysis; Miscellaneous; Power networks and lines; PSO; Reliability indices; Repair time; Swarm intelligence
• ISSN: 0142-0615; 1879-3517
• DOI: 10.1016/j.ijepes.2012.05.045

► Reliability of the composite distribution system has been optimized. ► Failure rate and repair time of each section of the distribution system have modified. ► The objective function reflects cost of modification. ► The objective function also reflects cost of expected energy supplied by DG. This paper describes an analytical methodology for reliability evaluation and enhancement of distribution system having distributed generation (DG). Standby mode of operation of DG has been considered for this purpose. Reliability of the composite distribution system has been optimized with respect to failure rate and repair time of each section of the distribution system subject to constraints on (i) failure rates/ repair times and (ii) customer and energy based reliability indices i.e. SAFI, SAIDI, CAIDI and AFNS. The objective function includes (i) cost of modification for failure rates/repair times (ii) additional cost of expected energy supplied by DG. Differential evolution (DE), Particle swarm optimization (PSO) and co-ordinated aggregation based PSO (CAPSO) have been used to develop computational algorithms. Developed algorithms have been implemented on a sample distribution system.