scholarly journals Reliability Analysis and Repair Activity for the Components of 350 kW Inverters in a Large Scale Grid-Connected Photovoltaic System

Electronics ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 564
Author(s):  
Filippo Spertino ◽  
Angela Amato ◽  
Gabriele Casali ◽  
Alessandro Ciocia ◽  
Gabriele Malgaroli
Keyword(s):  
Reliability Analysis ◽  
Large Scale ◽  
Photovoltaic System ◽  
Component Level ◽  
Ac Power ◽  
Repair Activity ◽  
Industrial Maintenance ◽  
Large Scale Grid ◽  
Ac Converters ◽  
Scale Grid

The reliability of photovoltaic (PV) generators is strongly affected by the performance of Direct Current/Alternating Current (DC/AC) converters, being the major source of PV underperformance. However, generally, their reliability is not investigated at component level: thus, the present work presents a reliability analysis and the repair activity for the components of full bridge DC/AC converters. In the first part of the paper, a reliability analysis using failure rates from literature is carried out for 132 inverters (AC rated power of 350 kW each) with global AC power of 46 MW in a large scale grid-connected PV plant. Then, in the second part of the work, results from literature are compared with data obtained by analyzing industrial maintenance reports in the years 2015–2017. In conclusion, the yearly energy losses involved in the downtime are quantified, as well as their availability.

Sizing Optimization of Large-Scale Grid-Connected Photovoltaic System Using Cuckoo Search

2017 ◽  
Vol 8 (1) ◽  
pp. 169 ◽  
Author(s):  
Muhammad Zakyizzuddin Bin Rosselan ◽  
Shahril Irwan Sulaiman ◽  
Ismail Musirin
Keyword(s):  
Large Scale ◽  
Computation Time ◽  
Cuckoo Search ◽  
Optimization Methods ◽  
Photovoltaic System ◽  
Performance Ratio ◽  
Sizing Optimization ◽  
Optimal Sizing ◽  
Large Scale Grid ◽  
Scale Grid

<p>This study presents the development of Cuckoo Search (CS)-based sizing algorithm for sizing optimization of 5MW large-scale Grid-Connected Photovoltaic (GCPV) systems. CS was used to select the optimal combination of the system components which are PV module and inverter such that the Performance Ratio (PR) is correspondingly optimized. The oversized and undersized of this large-scale GCPV system can give huge impact towards the performanceof this system. Before incorporating the optimization methods, a sizing algorithm for large-scale GCPV systems was developed. Later, an Iterative-based Sizing Algorithm (ISA) was developed to determine the optimal sizing solution which was later used as benchmark for sizing algorithms using optimization methods.The results showed that the CS-based sizing algorithm was unable to found the optimal PR for the system if compared with ISA. However, CS was outperformed ISA in producing the lowest computation time in finding the optimal sizing solution.</p>

scholarly journals Lightning Surge Analysis on a Large Scale Grid-Connected Solar Photovoltaic System

Energies ◽  
2017 ◽  
Vol 10 (12) ◽  
pp. 2149 ◽  
Author(s):  
Nur Zaini ◽  
Mohd Zainal Abidin Ab. Kadir ◽  
Mohd Amran Mohd Radzi ◽  
Mahdi Izadi ◽  
Norhafiz Azis ◽  
...  
Keyword(s):  
Large Scale ◽  
Photovoltaic System ◽  
Solar Photovoltaic ◽  
Large Scale Grid ◽  
Solar Photovoltaic System ◽  
Scale Grid
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