飈力発電遙系系統の周波数制御のための飈車ピッチ角制御とその蓄電池容量削減効果

摘要

Considering interconnection of a large-capacity of wind power generation to the utility grid, it is of great concern that its output power fluctuation has adverse influences, e.g. frequency fluctuation. There have so far been some research works on installation of battery energy storage systems (BESS), as a solution of these problems. However, owing to very high cost of the BESS, its capacity should be as small as possible. In this paper, not only the installation of the BESS as one of measures of suppressing the frequency fluctuation caused by wind power generation, but also blade pitch angle control for blunting the output power of wind turbine generators (WTGs) is also considered. This paper proposes a coordinated control method of the BESS and the blade pitch angle, and evaluates reduction of the capacity of the BESS and the power generation loss caused by blunting the output power which should be originally generated by WTGs.%風力発電は再生可能なクリーンエネルギーであること，rn新エネルギーの中でも発電単価が比較的安価であることかrnら，近年我が国において急速に導入が進んでいる。しかrnし風速は時々刻々と変化し，風力発電出力は風速の3乗にrn比例するため，出力変動が非常に大きく，将来大容量の風rn力発電が既存系統に連系されると，周波数などの電力品質rnに支障をきたす恐れがあるとされている。