Reliability evaluation of stand-alone hybrid photovoltaic energy system for rural healthcare centre. (February 2020)

• Record Type: Journal Article
• Authors: Raghuwanshi, Santosh Singh; Arya, Rajesh
• Is Part Of: Sustainable energy technologies and assessments. Volume 37(2020)
• Publication Date: 2020-02
• Subjects: Failure rate -- Frequency-duration -- Markov approach -- Repair rate -- Reliability; PV Photovoltaic -- F-D Frequency-duration -- LOLP Loss of load probability -- EENS Expected energy not supplied -- MDT Mean down time -- RES Renewable energy system -- RBD Reliability block diagram -- MCS Monte Carlo simulation -- PSO Particle swarm optimization -- HPVES Hybrid PV energy systems -- CFL Compact fluorescent lamp -- MTBF Mean time between failure -- A Availability -- U Unavailability -- MUT Mean up time -- BC Buck-Boost converter -- inv Inverter -- ES Electronic switch -- CC Charge controller -- Bat Battery -- DoD Depth of discharge -- r Repair time -- COS Change over switch -- CC Charger controller -- DG Diesel generator -- λ Failure rate -- μ Repair rate -- Usys System unavailability -- λsys System failure rate -- rsys Average interruption duration -- NC total number of components in series -- ser series system -- para parallel system -- NOC non-operable components in kth state -- OC denote set of operable components in kth -- PE Power electronics -- f Frequency -- fSys System frequency; Renewable energy sources -- Periodicals; Energy development -- Technological innovations -- Periodicals; Electric power production -- Periodicals; Energy storage -- Periodicals; 333.79
• DOI: 10.1016/j.seta.2019.100624
• Languages: English
• ISSNs: 2213-1388

Abstract

Highlights: To select optimal energy system using reliability evaluation for rural healthcare centre. Design and evaluate reliability indices of a hybrid PV/Diesel/Battery system. Markov approach and frequency-duration technique are used for evaluating reliability indices. Evaluate reliability indices i.e. failure rate, unavailability, frequency duration, repair rate, LOLP and EENS. Monthly solar radiation and load demand data based reliability analysis. Abstract: This paper presents two methods for evaluation of reliability indices of stand-alone hybrid photovoltaic (PV) energy system. Markov model and frequency-duration (F-D) reliability techniques have been used for evaluation of reliability indices. Hybrid energy system is design and evaluated reliability indices for its configurations (Diesel only, PV/Battery and PV/Diesel/Battery). The system reliability is based on the system failure rate, interruption duration, unavailability, loss of load probability (LOLP), expected energy not supplied (EENS) mean downtime (MDT) indices, which are computed and compared different energy generation system configurations. This paper also presented hybrid energy system reliability analysis is based on monthly solar radiation and load demand data. It is observed that hybrid energy system failure rate, interruption duration, system unavailability, EENS, MDT and LOLP are least as compared to other configuration. The results show that hybrid PV/Battery/Diesel system is more efficient and reliable system as compared to other configurations. This research work will be useful for policymakers and system designers to determine optimal system in remote areas before installation.