Abstract

The output power of wind turbine caused by the variation of wind fluctuates badly, which causes instability of the Power Grid. To smooth the output of wind power to Grid, an Energy Storage System (ESS) solves this problem by absorbing and releasing the wind turbine energy. The smooth performance depends on the State of Charge (SOC) of the ESS. Considering the SOC of the ESS, an optimized Particle Swarm Optimization (PSO) algorithm is designed in this paper, where the SOC of the ESS is the boundary condition. A penalty mechanism is designed to ensure the wind power system's feasibility. The wind power system with ESS based on MATLAB is modelled. The optimized PSO algorithm is used to control output wind power. The simulation results verified it. Keywords-wind power; smoothing; Energy Storage System(ESS); PSO algorithm

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