基于节点碳势的互联数据中心电-碳协同调度策略OA

[Objective]Under the wave of digital transformation in various sectors,the data center industry is booming and showing a new trend of clustering and wide-area interconnection.Given the high energy consumption and high carbon emissions that are common in data centers,this paper aims to guide them to actively participate in the low-carbon dispatching of the power grid based on the spatio-temporal flexibility of their computing loads,in order to achieve the goals of energy conservation,carbon reduction,and economic operation for both data centers and the power grid.[Methods]This paper proposes a high-precision dynamic carbon emission accounting method,which takes into account the spatio-temporal differences in network losses and carbon emissions.It accurately calculates the key"nodal carbon potential"signal through a power iteration traceability algorithm and,based on this signal,proposes a coordinated two-layer dispatching model for interconnected data centers and the power grid,where the upper-layer model aims to minimize the operation cost,carbon emissions,and renewable energy curtailment,while the lower-layer model aims to minimize the integrated electricity-carbon cost.The dispatching model interacts and iterates through the carbon potential and load adjustment signals between the upper and lower layers to find the optimal dispatching strategy for the system.[Results]The case study based on the improved IEEE 39-bus system shows that under the proposed coordinated dispatching strategy,data centers actively transfer online loads to low-carbon potential nodes for processing during high-carbon potential periods and delay the processing of local offline loads.During low-carbon potential periods,they take on more online loads and concentrate on processing previously delayed offline loads,achieving significant energy conservation and carbon reduction effects.[Conclusions]The two-layer optimization model proposed in this paper can effectively guide data centers to achieve economic and low-carbon coordination,providing a new technical tool for the green transition of data centers and the low-carbon dispatching of the power grid.