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ID: 099317

Grid matching of large-scale wind energy conversion systems, al: an Israeli case study / Solomon, A A; Faiman, D; Meron, G

Solomon, A A	Journal Article
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2010.

Summary/Abstract

This paper presents a grid matching analysis of wind energy conversion systems (WECSs) and photovoltaic (PV)-WECS hybrid systems. The study was carried out using hourly load data of the Israel Electric Corporation (IEC) for the year 2006 and the corresponding simulated hourly performance of large PV and WECS plants in the Negev Desert. Our major objective was to compare the grid-matching capabilities of wind with those of our previously published PV results, and to assess the extent to which the combined employment of WECS and PV can improve the grid matching capability of either technology when used on its own. We find that, due to the differences in diurnal and seasonal output profiles of WECS and PV, their tandem employment significantly improves grid penetration compared to their use individually.

Key Words

Grid Penetration ; PV ; WECS

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ID: 115146

Role of conventional power plants in a grid fed mainly by PV an / Solomon, A A; Faiman, D; Meron, G

Solomon, A A	Journal Article
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Publication

2012.

Summary/Abstract

Recently we reported that PV penetration of up to approximately 90% of the annual demand of the Israeli electricity grid could be achieved using properly sized storage and an appropriate operation strategy. Such a grid clearly requires some conventional generating capacity to be available in order to serve as backup at times when the PV-storage combination alone fails to meet the demand. In the present continuation of that study, we evaluate the largest conventional capacity that would have been required during the one year of data employed for our simulations. For that year, 2006, the required backup capacity for a grid with flexibility ff=0.8 and ff=1 would have been 7.5 GW and 6.6 GW, respectively. This is significantly less than the 10.5 GW of generating capacity that the Israel Electric Corporation operated that year. Our finding emphasizes the fact that a full economic optimization of storage must be based primarily on the engineering-aspects of storage design and use.

Key Words

Energy Storage ; Photovoltaics ; Backup Capacity

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