Continuous State Power-Down Systems for Renewable Energy Management

Document Type

Article

Publication Date

4-13-2018

Publication Title

Advances in Intelligent Systems and Computing

Volume

738

First page number:

701

Last page number:

707

Abstract

In the continuous power-down problem one considers a device, which has states OFF, ON, and an infinite number of intermediate states. The state of the device can be switched at any time. In the OFF state the device consumes zero energy and in the ON state it works at its full power consumption. The intermediate states consume only some fraction of energy proportional to usage time but switching back to the ON state has various switch up cost depending on the state. Requests for service, i.e. for when the device has to be in the ON state, are not known in advance; power-down problems are thus studied in the framework of online competitive analysis. Power-down can be used to model the control of traditional power generation in an electrical grid predominantly supplied by renewable energy. We analyze a number of systems, namely “linear”, “optimal-following”, “progressive”, “logarithmic” as well as “exponential”, and give competitive ratios for these systems. We show that highly competitive systems must have schedules which are accelerated from the offline solution.

Keywords

Game theory; Green computing; Online competitive analysis; Power-down systems; Renewable energy

Disciplines

Computer Sciences

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