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2015 | OriginalPaper | Chapter

5. Risk-Constrained Operation for Internet Data Centers in Deregulated Electricity Markets

Authors : Tao Jiang, Liang Yu, Yang Cao

Published in: Energy Management of Internet Data Centers in Smart Grid

Publisher: Springer Berlin Heidelberg

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Abstract

In deregulated electricity markets, there exist multiple markets of different time scales, e.g., forward markets and spot markets. When Internet data center operators only procure energy from spot markets, they can save energy cost by fully exploiting the temporal and spatial variations of spot prices. Meanwhile, prices in spot markets and workloads are volatile, and forecasted prices and workloads tend to be less accurate with the increase of planning horizon, consequently, the future energy cost of Internet data centers is full of uncertainty (or randomness), which is a risk for Internet data center operators since they may experience high probability of having high energy cost in the future. Thus, in this chapter, we consider the risk-constrained operation for Internet data centers in deregulated electricity markets and propose a stochastic programming-based decision framework to decide the optimal quantity of electricity that should be purchased in forward markets given the risk preference of Internet data center operators.

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previous chapter Joint Workload and Battery Scheduling for Data Center Energy Cost Minimization
next chapter Conclusions
Footnotes
1
In this study, we focus on day-ahead spot markets and assume that prices and workloads in the next day can be accurately predicted [22, 23].
 
2
A time-slotted system is considered in this chapter, where each slot represents a time interval in a given delivery period of EFCs, e.g., 1 h.
 
3
Here, a simple SLA is adopted as in [33, 35]. Other more complicated SLAs would be considered in future work.
 
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Metadata
Title
Risk-Constrained Operation for Internet Data Centers in Deregulated Electricity Markets
Authors
Tao Jiang
Liang Yu
Yang Cao
Copyright Year
2015
Publisher
Springer Berlin Heidelberg
Book
Energy Management of Internet Data Centers in Smart Grid

Print ISBN: 978-3-662-45675-0

Electronic ISBN: 978-3-662-45676-7

Copyright Year: 2015

DOI
https://doi.org/10.1007/978-3-662-45676-7_5