スポット市場・需給調整市場に対するコージェネ発電機群によるkWhとΔkWの同時入札戦略の提案と評価

<p>With the promotion of large-scale renewable energy introduction policies aimed at a carbon-neutral society (Net Zero) and the increasing risk of electric power shortages, it is becoming increasingly important to utilize the surplus capacity with adjustment capacity of consumer's distributed energy resources (DERs) in the market. To promote the active market participation of DERs in multiple electricity markets that are being developed in Japan, it is important to develop optimal bidding strategies for multiple markets. In this study, we consider multi-market strategy and propose the `two-stage bidding strategy method' for the wholesale electricity market (spot market) and the balancing market Tertiary-2 and evaluate the economic value from the resource owner's perspective based on actual market data. The proposed method deals with the spot market that trades the kWh value of DERs and the balancing market that trades the ΔkW value of DERs, and it is the optimal bidding strategy logic that considers differences in bidding times and market rules. In the proposed method, predicted highest contract price and optimal strategic parameter for bid price of balancing market are required. So, in this research, (i) prediction of the market price in the balancing market with several methods are comparatively evaluated, and (ii) strategic parameters for bid price to the balancing market are optimized based on the past market data. As a case study based on an existing DER, the overall market profit is evaluated from the bidding simulation with market data in 2021-2022FY, and some additional analysis and consideration was performed.</p>