Issue No.05 - May (2014 vol.25)
Qian Zhang , Department of Computer Science and Engineering, Hong Kong University of Science and Technology, Hong Kong
In this paper, we study the problem of achieving the optimal tradeoff between operation risk and expected energy cost for Internet data center (IDC) operators in deregulated electricity markets according to the risk preferences of IDC operators. To achieve the target above, we propose a risk-constrained stochastic programming decision framework. Then, we formulate a risk-constrained expected energy cost minimization problem with the uncertainties in spot price and workload. To solve the formulated problem, we use a decomposition-based cutting plane algorithm. Finally, extensive evaluations based on real-life data show the effectiveness of the proposed decision framework.
Electricity, Uncertainty, Power demand, Servers, Stochastic processes, Programming, Electricity supply industry,stochastic programming, Internet data center, uncertainty, operation risk, energy cost
Qian Zhang, "Risk-Constrained Operation for Internet Data Centers in Deregulated Electricity Markets", IEEE Transactions on Parallel & Distributed Systems, vol.25, no. 5, pp. 1306-1316, May 2014, doi:10.1109/TPDS.2013.2297095