基于Hamilton能量理论的海上风电场双馈机群分布式互补控制

针对2个海上风电场中双馈风电机群的控制问题,基于Hamilton能量理论,提出了一种分布式互补控制策略,该控制策略不仅能够保证单个机群内风电机组的同步运行,而且可以使2个机群之间实现输出互补。对双馈风电机组单机模型进行Hamilton实现,获得端口受控耗散Hamilton模型;研究2台风电机组的互补控制问题,基于能量成型的方法设计Hamilton能量控制策略;提出2个风电机群间的分布式互补控制策略,使得2个风电场分别保持同步运行,且它们之间的输出之和及有功输出之和均能保持恒定,即实现输出互补。通过仿真验证了风电机群分布式互补控制策略的有效性。

Distributed complementary control of doubly-fed wind turbine group in offshore wind farm based on Hamiltonian energy theory

For the control problem of doubly-fed wind turbine groups in two offshore wind farms, a complementary control strategy is proposed based on Hamiltonian energy theory, which can not only ensure the wind turbine outputs synchronous in one single group, but also achieve the output complementation of two groups. The single-machine model of doubly-fed wind turbine is Hamiltonian realized to get the PCH-D(Port-Controlled Hamiltonian with Dissipation) model. The complementary control of two doubly-fed wind turbines is studied, and the Hamiltonian energy control law is designed based on the energy shaping method. The complementary control law between two wind turbine groups is presented to render the two wind farms synchronous respectively and remain the total outputs and active power outputs of the two groups constant. Simulations verify the effectiveness of the distributed complementary control for wind turbine groups.