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Frequently several PhotoVoltaic (PV) plants has to be monitored by an unique supervision centre (we can say that the plants constitute a “constellation” from the point of view of storing and transferring data). In this case the analysis of the whole population of data by means of statistical approach requires long time and it is not always possible. In the paper it is presented a procedure of analysis...
The concept of attaching a small complete inverter designed for grid interconnection to each photovoltaic (PV) module of an array has been pursued for about 20 years. National Grid began supporting development of this novel concept in 1992, designating the complete system as an “AC Module” (ACM). Technical success was achieved around ten years ago, but commercial success has been achieved only within...
This paper presents the performance of a 6.08 kWp grid-connected photovoltaic (PV) system installed at Malaysian Energy Centre (PTM), Bangi, Malaysia. The site is located at the latitude of approximately 2.96°N and longitude of 101.75°E. The system was commissioned on 14th June 2007 and the system performance has been monitored since 15th Jan 2008. The system comprises 6.08 kWp of PV array and a 4...
In this paper, for the field test of the first photovoltaic (PV) systems in Korea, the performance of a 3 kW grid-connected PV systems for house, separately installed in the solar energy demonstration research complex, had been analyzed for the four years from January 2003 to December 2006. For the evaluation and analysis of the three sets of 3 kW grid-connected PV system, the operation characteristics...
In 2006, at University Politehnica of Bucharest, in the framework of the European demonstration project PV-enlargement, and of the Romanian project ldquoPV gridrdquo, a rooftop grid-connected photovoltaic power generation system of 30 kWp has been installed. This is a double array PV system containing two kinds of silicon modules: crystalline and amorphous. The installed power of crystalline modules...
The paper describes the performance of the grid-connected 1-kW PV system installed on a grammar school in Poland after eight years of operation. It was designed and installed in year 2000 and from year 2001 it is fully monitored according to guidelines of standard IEC 61724. System was build from 20 a-Si modules (Millennia MST 50 MV by BP Solar) and Sunny Boy inverter. Monitoring system consists of...
The performance of a utility interactive photovoltaic (PV) system relies on several key components within the system. The effects of long term operation on utility interactive inverter performance are the topic of this paper. Years of anecdotal evidence indicates that the PV module typically has a 1% per year degradation in performance; this is accepted by industry for how modules are typically rated...
This paper proposes the design of a Labview interface for acquiring, pre-processing, processing and visualizing data deriving from PhotoVoltaic (PV) plants. Voltage, current and energy of the DC side as well as of the AC side can give useful information about the operation of the PV plant not only if failure is present but also if little mis-operation is. The proposed interface allows also to compare...
Different photovoltaic (PV) technologies are being developed, tested and employed as small-scale on-site distributed generators for directly catering to the customer loads at the distribution voltage level. In this connection, extensive off-line and laboratory based research is also being performed for studying and comparing the PV technologies as well as for assessing their effectiveness for on-site...
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