Abstract
Photovoltaic (PV) systems have been introduced actively as a measure against green house effect etc. In the future it is considered that the amount of PV systems will increase more and more. Since the outputs of the PV systems are influenced by weather, they cannot be controlled easily. Therefore, energy storage systems are needed as a facility for giving a capacity credit to the PV systems with uncertain output characteristics. Further, when PV systems are introduced at the end of the network, it is expected that their fluctuation is absorbed at substation level (at a transformer substation). Therefore, the authors assume that energy storage systems are introduced at substation dispersively.
This paper evaluates the economic effect of PV system considering load leveling by dispersed-type energy storage (DES) systems. The calculation results by proposed method show some important relations between PV systems and DBS systems.
