1．はじめに

本稿では，大量導入が進む太陽光発電（PV）システムの出力推定，および予測技術について概説する。PVシステムの出力は，主として入力エネルギーである日射量や太陽電池モジュール温度等の影響を受け，時々刻々と変化する。以下では，はじめに日射量等からPVシステムの出力

A new Phased Array Radar (PAR) system for meteorological application has been developed by Toshiba Corporation and Osaka University under a grant of NICT, and installed in Osaka University, Japan in 2012. The phased array radar system developed has the unique capability of scanning the whole sky with 100m and 10 to 30 second resolution up to 60km. The system adopts the digital beam forming technique for elevation scanning and mechanically rotates the array antenna in azimuth direction within 10 to 30 seconds. The radar transmits a broad beam of several degrees with 24 antenna elements and receives the back scattered signal with 128 elements digitizing at each elements. Then by digitally forming the beam in the signal processor, the fast scanning is realized. After the installation of the PAR, SIP project has started to develop a new PAR with polarimetric capabilities.