Open AccessReliability evaluation of PV power systems with consideration of time‐varying factors
Author(s) -
Li Hongtao,
Ding Jie,
Huang Jingsheng,
Dong Yinghua,
Li Xiaoyan
Publication year - 2017
Publication title -
the journal of engineering
Language(s) - English
Resource type - Journals
ISSN - 2051-3305
DOI - 10.1049/joe.2017.0638
Subject(s) - reliability engineering , reliability (semiconductor) , photovoltaic system , component (thermodynamics) , monte carlo method , electric power system , computer science , power (physics) , mode (computer interface) , constraint (computer aided design) , failure mode and effects analysis , maximum power point tracking , grid connected photovoltaic power system , engineering , mathematics , electrical engineering , statistics , physics , quantum mechanics , mechanical engineering , inverter , thermodynamics , operating system
With the large‐scale grid‐connected operation of solar photovoltaic (PV) power systems in recent years, the accurate assessment of its reliability level has received increasing focus. This study obtained a probability model for system power output by analysing the structural characteristics of the PV power system and by examining its component failure mode and the effect of the component failure mode on the output power. The algorithmic model for the reliability evaluation of the PV power system was established based on the sequential Monte Carlo method, the weather conditions, component ageing, and light intensity. Finally, the six states model and their reliability indices of the PV power system were studied considering the resource constraint and the structural characteristics of the PV power system. The results showed that the model can fully reflect the actual operation reliability of a PV power system.