Evaluation of Continuous Power-Down Schemes
We consider a power-down system with two states—“on” and “off”—and a continuous set of power states. The system has to respond to requests for service in the “on” state and, after service, the system can power off or switch to any of the intermediate power-saving states. The choice of states determi...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-01-01
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| Series: | Information |
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| Online Access: | https://www.mdpi.com/2078-2489/13/1/37 |
| _version_ | 1797493143781769216 |
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| author | James Andro-Vasko Wolfgang Bein |
| author_facet | James Andro-Vasko Wolfgang Bein |
| author_sort | James Andro-Vasko |
| collection | DOAJ |
| description | We consider a power-down system with two states—“on” and “off”—and a continuous set of power states. The system has to respond to requests for service in the “on” state and, after service, the system can power off or switch to any of the intermediate power-saving states. The choice of states determines the cost to power on for subsequent requests. The protocol for requests is “online”, which means that the decision as to which intermediate state (or the off-state) the system will switch has to be made without knowledge of future requests. We model a linear and a non-linear system, and we consider different online strategies, namely piece-wise linear, logarithmic and exponential. We provide results under online competitive analysis, which have relevance for the integration of renewable energy sources into the smart grid. Our analysis shows that while piece-wise linear systems are not specific for any type of system, logarithmic strategies work well for slack systems, whereas exponential systems are better suited for busy systems. |
| first_indexed | 2024-03-10T01:15:47Z |
| format | Article |
| id | doaj.art-0e3ebbd7fd9c4ebf94e74323a49b102b |
| institution | Directory Open Access Journal |
| issn | 2078-2489 |
| language | English |
| last_indexed | 2024-03-10T01:15:47Z |
| publishDate | 2022-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Information |
| spelling | doaj.art-0e3ebbd7fd9c4ebf94e74323a49b102b2023-11-23T14:08:46ZengMDPI AGInformation2078-24892022-01-011313710.3390/info13010037Evaluation of Continuous Power-Down SchemesJames Andro-Vasko0Wolfgang Bein1Department of Computer Science, University of Nevada, Las Vegas, NV 89154, USADepartment of Computer Science, University of Nevada, Las Vegas, NV 89154, USAWe consider a power-down system with two states—“on” and “off”—and a continuous set of power states. The system has to respond to requests for service in the “on” state and, after service, the system can power off or switch to any of the intermediate power-saving states. The choice of states determines the cost to power on for subsequent requests. The protocol for requests is “online”, which means that the decision as to which intermediate state (or the off-state) the system will switch has to be made without knowledge of future requests. We model a linear and a non-linear system, and we consider different online strategies, namely piece-wise linear, logarithmic and exponential. We provide results under online competitive analysis, which have relevance for the integration of renewable energy sources into the smart grid. Our analysis shows that while piece-wise linear systems are not specific for any type of system, logarithmic strategies work well for slack systems, whereas exponential systems are better suited for busy systems.https://www.mdpi.com/2078-2489/13/1/37online algorithmscompetitive analysisgreen energyrenewable energypower-down |
| spellingShingle | James Andro-Vasko Wolfgang Bein Evaluation of Continuous Power-Down Schemes Information online algorithms competitive analysis green energy renewable energy power-down |
| title | Evaluation of Continuous Power-Down Schemes |
| title_full | Evaluation of Continuous Power-Down Schemes |
| title_fullStr | Evaluation of Continuous Power-Down Schemes |
| title_full_unstemmed | Evaluation of Continuous Power-Down Schemes |
| title_short | Evaluation of Continuous Power-Down Schemes |
| title_sort | evaluation of continuous power down schemes |
| topic | online algorithms competitive analysis green energy renewable energy power-down |
| url | https://www.mdpi.com/2078-2489/13/1/37 |
| work_keys_str_mv | AT jamesandrovasko evaluationofcontinuouspowerdownschemes AT wolfgangbein evaluationofcontinuouspowerdownschemes |