2022 年 43 巻 4 号 p. 172-177
The authors had developed the novel method to optimize the operation of microgrid consisted PV, battery, electrolyzer, and auxiliary equipment regarding hydrogen supplement participating in reserve market economically. Moreover, previous research evaluated its regulation ability and economic valuation through numerical case studies with expected transaction prices of the reserve market. This paper conducts the cost evaluation of hydrogen supply by electrolyzer in microgrid under optimization in ideal conditions based on time-series data of actual transaction prices in supplemental reserve market in Transmission and Distribution Grid Council (TDGC) in addition to the spot market in Japan Electric Power Exchange (JEPX). Moreover, this paper discusses the expected benefits of hydrogen supply with electrolyzer given by the reform from the current transaction system in electricity and reserve markets. The simulation result implies that participating in reserve markets while operating under the proposed method can save hydrogen supply costs. However, since the saved price of hydrogen supply cost also is not achieved to government target, power system reform, such as renewable energy surcharge exemption and consignment fee discount for hydrogen production equipment, is required.