著者
松原 雅 吉岡 剛 松橋 隆治
出版者
一般社団法人 エネルギー・資源学会
雑誌
エネルギー・資源学会論文誌 (ISSN:24330531)
巻号頁・発行日
vol.43, no.6, pp.235-244, 2022-11-10 (Released:2022-11-10)
参考文献数
23

Power retail companies have the risk of paying the penalty due to the imbalance between planned and actual power generation values. And the risk is supposed to increase in the future. Batteries and electrolyzers are a possible solution to reduce the imbalance. To mitigate the high installation cost of electrolyzers, it is important to increase the capacity factor of electrolyzers. In this study, a mathematical model was developed to simulate the operation of a power retail company using a battery and an electrolyzer. Then we proposed a new strategy to produce hydrogen using electricity from JEPX, when the wholesale electricity price is lower than a certain value. The model was formulated as a mixed integer linear programming problem, and the effect of the strategy was evaluated by solving this problem. As a result, this strategy achieved high capacity factor of the electrolyzer, around 60%. In order to reduce the risk of JEPX price fluctuation, we also proposed an electrolyzer’s operation strategy using the prediction error distribution of JEPX price. The effect was quantified through Monte-Carlo simulation. Although the deviation of the yearly revenue was not much reduced by this strategy, the high deviation was notably reduced in the daily revenue.
著者
松原 雅昭 伊澤 悟 平尾 典盟 毒島 康二 小山 哲 町田 康治 川田 大介 坂本 賢治 根津 紀久雄
出版者
一般社団法人日本機械学会
雑誌
日本機械学會論文集. A編 (ISSN:03875008)
巻号頁・発行日
vol.67, no.659, pp.1218-1222, 2001-07-25
参考文献数
11
被引用文献数
1 1

The authors developed a new testing equipment for studying statically indeterminate fracture mechanics. Its development purpose is to clarify load history-dependency of the collapse load. The equipment has two actuators orthogonalized. The horizontal actuator applies the axial force and the perpendicular one does the bending moment. In the experiment for examining the effect of load hysteresis on the collapse load, both actuators can keep the preceding load to the constant load value, until axial force and bending load reach the theory collapse point. The actuators can apply the following load under the displacement control in the experiment. The performance of the equipment was confirmed by demonstration tests using single-edge notched specimens of SUS 304 steel. The experimental result clarified load historydependency on collapse load in SUS 304 single-edge notched member subjected to combined tension and bending.
著者
舩津 賢人 北川 一敬 松原 雅昭
出版者
群馬大学
雑誌
基盤研究(C)
巻号頁・発行日
2013-04-01

本研究の目的は、先進的な空間的時間的発光分光計測技術により、高エンタルピー流中のケイ素系超高温耐熱材料周りに生ずる極めて強い発光現象を解明することである。主な研究成果は、次のとおりである。(1)高エンタルピー流中のケイ素系超高温耐熱材料の加熱試験における強い発光現象を複数の波長フィルターと汎用ビデオカメラにより空間的時間的な発光強度分布を取得した。これらの発光強度分布の強度比からケイ素系超高温耐熱材料の温度分布を推定した。(2)高エンタルピー流中のケイ素系超高温耐熱材料の加熱試験における強い発光現象を二波長分光光学系により空間的時間的な発光強度分布を取得した。