wind farm reliability modelling using bayesian networks and semi-markov processes
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2015
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Abstract
Technical reliability plays an important role among factors affecting the power output of a wind farm. The reliability is determined by an internal collection grid topology and reliability of its electrical components, e.g. generators, transformers, cables, switch breakers, protective relays, and busbars. A wind farm reliability’s quantitative measure can be the probability distribution of combinations of operating and failed states of the farm’s wind turbines. The operating state of a wind turbine is its ability to generate power and to transfer it to an external power grid, which
means the availability of the wind turbine and other equipment necessary for the power transfer to the external grid. This measure can be used for quantitative analysis of the impact of various wind farm topologies and the reliability of individual farm components on the farm reliability, and for determining the expected farm output power with consideration of the reliability. This knowledge may be useful in an analysis of power generation reliability in power systems. The paper presents probabilistic models that quantify the wind farm reliability taking into account
the above-mentioned technical factors. To formulate the reliability models Bayesian networks and semi-Markov processes were used. Using Bayesian networks the wind farm structural reliability
was mapped, as well as quantitative characteristics describing equipment reliability. To determine the characteristics semi-Markov processes were used. The paper presents an example
calculation of: (i) probability distribution of the combination of both operating and failed states of four wind turbines included in the wind farm, and (ii) expected wind farm output power with
consideration of its reliability.
| Reference Key |
sobolewski2015actawind
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| Authors | ;Robert Adam Sobolewski |
| Journal | human reproduction (oxford, england) |
| Year | 2015 |
| DOI |
10.12736/issn.2300-3022.2015307
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