scholarly journals Impact of Component Reliability on Large Scale Photovoltaic Systems’ Performance

Energies ◽  
2018 ◽  
Vol 11 (6) ◽  
pp. 1579 ◽  
Author(s):  
Stefan Baschel ◽  
Elena Koubli ◽  
Jyotirmoy Roy ◽  
Ralph Gottschalg
Keyword(s):  
Large Scale ◽  
Photovoltaic Systems ◽  
Component Reliability

Decision support system for corrective maintenance in large-scale photovoltaic systems

2021 ◽  
Author(s):  
Andreas Livera ◽  
Marios Theristis ◽  
Alexios Charalambous ◽  
Joshua S. Stein ◽  
George E. Georghiou
Keyword(s):  
Decision Support ◽  
Decision Support System ◽  
Support System ◽  
Large Scale ◽  
Photovoltaic Systems ◽  
Corrective Maintenance

Hierarchical Anomaly Detection and Multimodal Classification in Large-Scale Photovoltaic Systems

2019 ◽  
Vol 10 (3) ◽  
pp. 1351-1361 ◽  
Author(s):  
Yingying Zhao ◽  
Qi Liu ◽  
Dongsheng Li ◽  
Dahai Kang ◽  
Qin Lv ◽  
...  
Keyword(s):  
Anomaly Detection ◽  
Large Scale ◽  
Photovoltaic Systems ◽  
Multimodal Classification

New network topologies for large scale photovoltaic Systems

2009 ◽  
Author(s):  
G. Carcangiu ◽  
C. Dainese ◽  
R. Faranda ◽  
S. Leva ◽  
M. Sardo
Keyword(s):  
Large Scale ◽  
Photovoltaic Systems ◽  
Network Topologies

Probabilistic Models for Wind Turbine and Wind Farm Performance

2011 ◽  
Vol 133 (4) ◽  
Author(s):  
Sanjay R. Arwade ◽  
Matthew A. Lackner ◽  
Mircea D. Grigoriu
Keyword(s):  
Markov Model ◽  
Wind Turbine ◽  
Large Scale ◽  
Wind Farm ◽  
Probabilistic Models ◽  
Performance Metrics ◽  
Wind Farms ◽  
Component Reliability ◽  
Mc Simulation ◽  
Farm Performance

A Markov model for the performance of wind turbines is developed that accounts for component reliability and the effect of wind speed and turbine capacity on component reliability. The model is calibrated to the observed performance of offshore turbines in the north of Europe, and uses wind records obtained from the coast of the state of Maine in the northeast United States in simulation. Simulation results indicate availability of 0.91, with mean residence time in the operating state that is nearly exponential and has a mean of 42 days. Using a power curve typical for a 2.5 MW turbine, the capacity factor is found to be beta distributed and highly non-Gaussian. Noticeable seasonal variation in turbine and farm performance metrics are observed and result from seasonal fluctuations in the characteristics of the wind record. The input parameters to the Markov model, as defined in this paper, are limited to those for which field data are available for calibration. Nevertheless, the framework of the model is readily adaptable to include, for example: site specific conditions; turbine details; wake induced loading effects; component redundancies; and dependencies. An on-off model is introduced as an approximation to the stochastic process describing the operating state of a wind turbine, and from this on-off process an Ornstein–Uhlenbeck (O–U) process is developed as a model for the availability of a wind farm. The O–U model agrees well with Monte Carlo (MC) simulation of the Markov model and is accepted as a valid approximation. Using the O–U model in design and management of large wind farms will be advantageous because it can provide statistics of wind farm performance without resort to intensive large scale MC simulation.

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