Abstract
Solar photovoltaic systems convert the energy of light directly into electrical energy. This paper presents Markov model and frequency-duration techniques for calculating the reliability indices of the stand-alone photovoltaic water pumping system. These techniques can be applied to both repairable and non-repairable systems. Markov model and frequency-duration techniques are used for evaluation of reliability indices e.g. failure rate, repair rate, unavailability etc. The results confirmed that failure and repair rate of the system is 0.33 and 41.37 respectively. Loss of load probability and unavailability of the system is 0.00158 /yrs and 13.8 hrs/yrs respectively.
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