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Hierarchy control of power quality for wind ?? battery energy storage system

机译:风的电能质量的层次控制电池储能系统

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Uncertainty of the wind results in a fluctuating power output of wind turbine generators, and consequently, causes adverse impacts on the stability of system frequency and voltage. To smooth such power fluctuation, this study proposes a power quality control strategy based on a three-level hierarchical structure for wind - battery energy storage hybrid power system, including grid demand calculating level, energy management level and voltage-source converters control level. The advantage of the control strategy is that the state of charge of a battery energy storage system is regulated within proper range and the voltage at the point of common coupling is kept stable while smoothing wind power. Effectiveness of the proposed method is validated by MATLAB/SIMULINK simulations and experiments.
机译:风的不确定性导致风力涡轮发电机的功率输出波动,因此对系统频率和电压的稳定性造成不利影响。为了缓解这种功率波动,本研究提出了一种基于三级分层结构的风电电池储能混合动力系统电能质量控制策略,包括电网需求计算级别,能源管理级别和电压源转换器控制级别。该控制策略的优点在于,将电池能量存储系统的充电状态调节在适当的范围内,并且在使风能平稳的同时,公共耦合点的电压保持稳定。通过MATLAB / SIMULINK仿真和实验验证了该方法的有效性。

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