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Multiple Power Quality Supply System 1st in Japan March 31, 2008

Posted by Hans De Keulenaer in electricity, power quality, reliability, security, storage, technology.
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In this interview, Keiichi Hirose from NTT Facilities, presents the first trial to take place in Japan in the area of power quality concepts and solutions. This field demonstration of a multiple power quality supply system is leaded by NTT Facilities. It has developed and installed a multiple power quality supply system that has the capability to feed four classes of alternative current (AC) and one of direct current (DC) power while meeting various customer requirements. The system also has three types of distributed generator (DG): gas engine sets, fuel cells, and photovoltaic panels. NTT Facilities started the project in Fiscal Year (FY) 2004 and plans to continue it for four years. A review of the project’s first three years was done @EPQU’07 conference.

Large-scale energy storage on the grid April 27, 2006

Posted by Hans De Keulenaer in storage.
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A SWOT analysis by the KULeuven (Belgium)

On the grid, an instantaneous balance between electricity production and highly variable demand needs to be maintained. In the past, it was not economically feasible to make widespread use of storage systems to relieve this stringent requirement. But times have changed …