報告書番号

Y09030

タイトル（和文）

再生可能エネルギー電源を含む供給信頼度価値の評価手法の動向－欧米における風力電源の利用可能容量－

タイトル（英文）

A survey of evaluation method of supply reliability value of renewable power generation -Capacity value of wind power generation in EU and USA-

概要 （図表や脚注は「報告書全文」に掲載しております）

本報告は現在世界各国で大量に導入されている風力発電に注目する。風力発電の大量導入時に，(A)常に風力発電の設備容量と同量のインバランス対応容量を確保する必要があるのか，それとも(B)風力発電に一定の利用可能な容量があるとみなすことができるのかにより，長期の電力系統全体の設備計画は異なってくる。本報告では，風力発電の設備の累積導入が多い欧州(EU)と米国 を例として，(B)のように想定した場合の中・長期的な視点における再生可能エネルギーの供給信頼度の評価方法の仕組みとその課題を指摘する。

概要 （英文）

Power generation based renewable energy, such as wind and photovoltaic, is spread rapidly worldwide, with keen interest in climate change. As the output of the renewable power supplies fluctuates by weather condition, it is necessary to evaluate the capacity value of these power sources to secure supply reliability in the whole electric power system planning when these renewable power sources are incorporated as supply capability. Toward establishing an appropriate service reliability evaluation framework in consideration of renewable power sources in Japan, this report shows characteristics of evaluation method of the capacity value of wind power generations in PJM and ERCOT as typical ones in European countries and USA. Average output of wind power generations in peak demand period during past three years is referred to as reliable generation capacity in PJM, which is called CF in this report. In ERCOT, the evaluation method changes three times on 2003, 2005 and 2007. Latest evaluation method is called Effective Load Carrying Capability (ELCC), which is the method based on the supply reliability in cases where thermal generator is installed and wind power generations is installed. NERC recommend ELCC highly by referring to it as "gold standard". CF is appropriate as the evaluation method with limited introduction wind power generations. The evaluation method considering supply reliability like ELCC is getting to be used widely as the capacity value of wind power generators as installed wind power generators increases. It is important to considering estabilishment of an appropriate evaluation method in Japan.

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