Page 258 - Advances in Renewable Energies and Power Technologies

CHAPTER

Strategies for Fault

Detection and Diagnosis 7

of PV Systems

Santiago Silvestre
Electronic Engineering Department, Universitat Polite `cnica de Catalunya-BarcelonaTech.,
Barcelona, Spain

CHAPTER OUTLINE
1. Introduction ....................................................................................................... 231
2. Performance Parameters of Photovoltaic Systems: Yields and Power Losses.......... 232
3. Supervision and Diagnosis of Photovoltaic Systems ............................................. 235
4. Automatic Supervision Strategies........................................................................ 237
5. Modeling and Simulation of Photovoltaic Systems................................................ 240
5.1 Modeling Solar Cells, Photovoltaic Modules, and Arrays.......................... 240
5.2 Inverter Model .................................................................................... 243
5.3 Parameter Extraction Techniques.......................................................... 244
5.4 Simulation Tools ................................................................................. 244
6. Fault Detection Procedures................................................................................. 245
6.1 Automatic Supervision and Diagnosis Based on Power Losses Analysis .... 245
6.2 Supervision and Diagnosis Based on Current and Voltage Indicators ........ 247
7. Conclusion ........................................................................................................ 250
References ............................................................................................................. 250

1. INTRODUCTION
The cumulative global photovoltaic (PV) capacity has been growing exponentially
in the last decade around the world and will continue growing in the future. In
2015 the total additional installed PV power was about 50.7 GW and the globally
installed total PV capacity is estimated at roughly 228 GW at the end of that year
[1]. The top three markets in 2015 were located in Asia: China and Japan followed
by Europe as a whole and the US market in the third place. Moreover, grid-
connected PV systems (GCPVSs) are able to cover 1.2% of the global electricity de-
mand nowadays. As a result of this trend, PV energy production will play a very
important role in the global generation of electricity in the future.
On the other hand, while the energy price has been increasing worldwide, PV sys-
tem prices have shown an important cost reduction. PV generation costs and more
precisely recently contracted power purchase agreements below 3 USD cents/kWh
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Advances in Renewable Energies and Power Technologies. https://doi.org/10.1016/B978-0-12-812959-3.00007-1
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