1. Reliability evaluation for electrical collector systems of wind farm using the section enumeration technique.
- Author
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Xie, Kaigui, Yang, Hejun, Hu, Bo, and Yu, David
- Subjects
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WIND power plants , *WIND speed measurement , *WIND turbines , *ELECTRIC transformers , *ELECTRIC generators , *MACHINE part failures , *WIND power , *EQUIPMENT & supplies - Abstract
Topology has a significant effect on the reliability performance of an electrical collector system (ECS) of wind farms. Novel indices for the reliability of wind farm ECS are presented based on topological features of wind farm ECS in this paper. The concept of the section for a wind farm ECS is defined. The probability table of multistate capacity (PTMC) for a wind turbine generator (WTG) and the Probability Table of the Number of WTG in Up-state (PTNU) for a section can be created. Based on the PTMC and PTNU, PTMC of a wind farm can be established using the state enumeration algorithm and the matrix operations. Therefore, the reliability evaluation model considering effects of wind speed and component failures can be built. The proposed model not only considers the multi-failures of ECS components including failures of cable feeder, WTG, and wind turbine transformer (WTT) but also states of switching devices in failure, disconnection, and switching processes. Four wind farm ECS topologies, i.e., radial topology, single-sided ring topology, double-sided ring topology, and star topology, are implemented. Case studies on the reliability evaluation of wind farm ECS are used to verify the feasibility and validity of the proposed technique. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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