Mixed Integer Linear Programming Approach to Optimize the Hybrid Renewable Energy System Management for supplying a Stand-Alone Data Center

Abstract

The trend toward server-side computing and the exploding popularity of Internet services due to the increasing of demand for networking, storage and computation has created a world-wild energetic problem and a significant carbon footprint. These environmental concerns prompt to several green energy initiative aiming either to increase data center efficiency and/or to the use of green energy supply. In this regard, As part of the ANR DATAZERO project, many researchers are working to define main concepts of an autonomous green data center only powered by renewable energies. Thus, the present paper proposes a mixed integer linear program to optimize the commitment of a hybrid energy system composed of wind turbines, solar panels, batteries and hydrogen storage systems. The approach is used to supply a data center demand and takes the weather forecasts into account at the time of optimization. Different time window resolution are applied in order to verify the best time window for decision making.

Stand-alone renewable power system scheduling for a green data center using integer linear programming

“…In this section, the linear programs obtained below are used with the following inputs in order to obtain different optimal commitment of the sources according to the stage of the negotiation. In fact, the program was executed following different resolution time windows for the same horizon (1 year) in [20]. The same sizing is played from the year 2004 till 2012.…”

“…Due to the non linearity of the set of Constraints (20), we propose to add a new substitution of variable P ez ′ k to keep P ez k being the relevant variables that express the use of the electrolyzer. We define the following relation to make the linearization possible:…”

Optimal standalone data center renewable power supply using an offline optimization approach

“…This step is a paramount step to match both the electric demand and supply. Other objectives have to be considered in the remaining steps of this negotiation [7,19].…”

Green power aware approaches for scheduling independent tasks on a multi-core machine

“…Realistic model A realistic model is used to generate the power envelope that represents the various renewable power supply. Based on real collected historical data [15], this model can produce a realistic power envelope that corresponds to a given number of wind turbines and a given area of solar panels in square meters. We consider that the generated power envelope is accessible by all computation units only for tasks execution.…”