| Under the current environment of energy crisis and waste disposal,researchers have widely discussed the mode of energy recycling.Biomass energy plays an important role in energy recycling due to its carbon-neutral characteristics.At the same time,integrating biomass energy into the integrated energy system plays an important role in hedging the uncontrollability of renewable energy.Biomass resources are abundant in remote areas and rural areas in western China.At the same time,the policy to shift direct more computational resources from the developed eastern areas to the less developed western areas of China also makes the construction direction of the data center gradually develop towards the west of China.In addition,suburbs such as Beijing and Shanghai,where data centers are concentrated,have policy subsidies for waste disposal.Under the trend of green transformation,the data center is facing the challenge of energy conservation and carbon reduction.In the future,the power source of the data center will be mainly renewable energy.At the same time,most of the energy consumption of the data center should be computing services.However,a large amount of low-quality waste heat is generated in the calculation process of the data center.In order to ensure the normal operation of the equipment,the data center needs cooling energy consumption.At present,there is a lack of systematic research on the interaction between the energy supply of the data center,the waste heat generated and the renewable energy system.Therefore,this paper establishes a comprehensive energy system containing biomass energy according to local conditions to supply power to the data center,and uses the waste heat produced by the data center as biomass energy reaction heating to realize energy recycling.Aiming at the problem of realizing energy recycling in the integrated energy system,a recycling mode of biomass energy supplying power to the data center is proposed,and a refined model of biomass energy and energy consumption and waste heat generation in the data center is established.The biomass biogas generation model considers the influence of multiple factors including temperature,and the energy consumption model in the data center includes calculation,cooling and other equipment energy consumption.Because the appropriate temperature of biogas production from biomass matches the temperature of waste heat in the data center,the waste heat produced by the data center is directly used to promote the reaction of biogas production from biomass.The biogas produced by biomass is used as a cogeneration fuel to provide power,heat and gas energy for users and the data center.Aiming at the source allocation of integrated energy system,the portfolio method and resource allocation of the system are obtained with the goal of minimizing investment and annual operating costs.For the nonlinear formula in the system,linearization is achieved by the least squares method,and the linearization feasibility is verified by error analysis.Based on the results of rural users’ calculations,the resource allocation and operation of the comprehensive energy system containing biomass energy,as well as the energy flow centered on biomass energy,and through the comparison of different investment portfolios,it is found that the system can not only improve the reliability of power supply,but also reduce the cost of biomass energy by up to 77.99%,and at the same time simplify the data center model to ordinary load to obtain its resource allocation.Aiming at the problem of optimizing the operation of recycled energy system including both data center and biomass energy,this problem is described as a two-stage operation model in the pre-prediction and real-time operation phase.Consider the access mode of data center,renewable energy generation and energy storage resources,and use the penalty factor method to linearize the system model.Based on the resource allocation scale obtained,the operation performance of the recycled energy system model is observed,and by comparing whether there is thermal coupling between the data center and the biomass energy,it is found that the energy recycling mode can not only reduce the operating cost by 37.4%,reduce the energy consumption of the system by 44.6%,but also improve the energy utilization rate and optimize the power efficiency of the data center. |
