Journal
IEEE TRANSACTIONS ON POWER SYSTEMS
Volume 26, Issue 1, Pages 460-469Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2010.2050079
Keywords
Power system modeling; power system reliability; risk analysis
Categories
Funding
- SSE Renewables
- Bord Gais
- Bord na Mona
- Cylon Controls
- Commission for Energy Regulation
- Eirgrid
- ESB International
- ESB Networks
- ESB Powergen
- Siemens
- South Western Services
- Viridian
- Embark Initiative through Irish Research Council for Science Engineering and Technology
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In the analysis of time series of blackouts, a power law dependency of blackout size with respect to frequency has been observed. It has been hypothesized that this behavior is the result of the power system operating near critical points. Models have been created in order to analyze this type of behavior in power systems. In this paper the effect of conservative versus nonconservative generation dispatch is studied using one such model. Conservative dispatches are ones that are performed in order to minimize stress on the system and therefore attempt to minimize possible outages and blackouts. This dispatch is compared with a nonconservative dispatch that attempts to maximize the stress and therefore increase the immediate risk of outages and blackouts. It is found that the nonconservative dispatch although attempting to maximize the immediate risk reduces the frequency of blackouts of all sizes over the conservative dispatch in the long term.
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