Availability estimation of a multi-state wind farm in fuzzy environment

ABSTRACT

Wind is one of the fastest growing renewable energy resources in the electric power system. Availability of wind energy is volatile in nature due to the stochastic behavior of wind speed and non-linear variation of the wind power curve of wind turbine generator. Because of this impression and uncertainty, the availability estimation of wind power has become a challenging issue. In this paper, Markov Fuzzy Reward technique has been proposed for finding out the reliability of wind farm by assessing the availability of wind power. According to this technique, availability of the wind power has been estimated considering wind farm and demand both as a multi-state system. In addition to the availability, different reliability indices such as the number of absolute failures, mean time to deficiency, and probability of failures of a wind farm have been assessed in a time horizon, which can provide useful information for the power system planner at wind farm installing stage. A comparison of this study reveals the efficacy of the proposed Markov Fuzzy Reward approach over the conventional Markov Reward approach.

Keywords:

• Fuzzy availability
• fuzzy reliability indices
• fuzzy transition intensity
• Markov Chain
• Markov Fuzzy Reward
• multi-state demand
• multi-state wind farm

Acknowledgments

The authors convey their sincere thanks to IIT(ISM), Dhanbad, India, for providing financial support for this work.