The Energy Storage Configuration Strategy of Biomass Thermal Power Plant with Multi-Market Cooperative Operation

Under the double background of the rapid expansion of the proportion of new energy and the marketization of electricity, fully tapping the ability of biomass thermal power plants to participate in the electricity energy market and ancillary service market can not only maximize the income of biomass thermal power plants, but also provide effective support for the safe operation of the power system. Aiming at the capacity limitation of electric and thermal energy storage and the feasibility and compatibility of multi-market operation, this paper proposes an energy storage configuration strategy of biomass thermal power plant considering multimarket cooperative operation. Firstly, the operation state of energy storage participating in the electric energy market and the configuration of heat storage devices under the condition of optimal output of each power generation unit are studied. Then, the profit conditions of energy storage participating in peaking ancillary service and backup ancillary service are considered, and the constraints of energy storage devices participating in multi-market operation are improved to obtain the electric energy storage capacity configuration. The feasibility of this strategy is verified by the example simulation, which can effectively improve the willingness of biomass power plants to participate in ancillary services and improve the economy of power plant operation

I. Introduction

Ambitious targets for energy conservation and emission reduction have been formulated, alongside efforts to foster revolutionary changes in energy supply, consumption patterns, institutions, and technologies [1]. Electric energy storage equipment plays a critical role as a flexible adjustment resource in promoting the utilization of renewable energy sources. However, the current investment costs associated with energy storage equipment remain high, making it challenging to recover these expenses solely through participation in electricity markets or peak-valley electricity price arbitrage. Therefore, rational allocation of energy storage capacity is essential along with simultaneous engagement in ancillary service markets and electricity energy markets to enhance the profitability model of energy storage systems. This approach can contribute towards improving the economic viability of biomass thermal power plants while facilitating their development. Furthermore, prioritizing participation in ancillary services is crucial for ensuring secure operation of power grids [2].