Abstract
Large-scale wind farms and wind farm clusters with many installed wind turbines are increasingly built around the world, and especially in offshore regions. The reliability and availability of these assets are critically important for cost-effective wind power generation. This requires effective solutions for online fault detection, diagnosis and fault accommodation to improve the overall reliability and availability of wind turbines and entire wind farms. To meet this requirement, this paper proposes a novel active fault-tolerant cooperative control (FTCC) scheme for large-scale wind farms and wind farm clusters (WFCs). The proposed scheme is based on a signal correction method at wind turbine level that is augmented with two innovative “control reallocation” mechanisms at wind farm and network operator levels. Applied to a WFC, this scheme detects, identifies and accommodates the effects of both mild and severe power-loss faults in wind turbines. Various simulation studies on an advanced WFC benchmark indicate the high efficiency and effectiveness of the proposed solutions.
Highlights
Wind power generation is booming and will continue to do so for the foreseeable future
In reference to the wind farm clusters (WFCs) of 100 wind turbines shown in Figure 1, a typical fault scenario is designed for a total simulation time of 1000 s during which mild and severe power loss faults occur in some wind turbines
This paper proposes and addresses the design, development, and structure of a novel active fault-tolerant cooperative control (FTCC) scheme for large-scale wind farms and wind farm clusters (WFCs)
Summary
Wind power generation is booming and will continue to do so for the foreseeable future. In [17], the problem of active power control in a wind farm is converted to the rotor speed tracking problem, and an adaptive FTC scheme is presented to track the power signal of each wind turbine with an acceptable transient performance and robustness to the actuator faults. A PSO-based active power dispatch method is introduced in [19] to accommodate the fault effects (i.e., inter-turn short circuit faults in wind turbines generators) at the farm level. Compared with the solutions in [20,21], the more recently developed scheme in [22] can handle both mild and severe power-loss faults because of different levels of icing or debris build-up on wind turbine rotor blades.
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