基于分层控制的多微网并联运行磁场定向控制策略

Field-oriented Control Strategy for Multi-microgrid Parallel Operation Based on Hierarchical Control

原有方法对多微网并联运行磁场定向控制具有延迟的问题,导致多微网并联运行磁场定向控制的效果较差,因此,设计了一种新型多微网并联运行磁场定向控制策略。首先设定多微网并联运行磁场定向控制指标。然后确定多微网并联运行磁场定向控制影响因素,并建立并网方案中的分配系数,采用分层控制的方法对多微网并联运行磁场进行定向控制,以此完成多微网并联运行磁场定向控制的优化设计。最后进行仿真分析,验证所提控制策略的电压调节速度、功率稳定性以及功率调节正确性。所得结果验证了所提多微网并联运行磁场定向控制策略的有效性。

Due to the delay in the field-oriented control of multi-microgrid parallel operation when using the existing method,the effect of field-oriented control is poor.Therefore,a novel type of field-oriented control strategy for multi-microgrid parallel operation is designed.First,an index for the field-oriented control of multi-microgrid parallel operation is formulated.Then,the corresponding influencing factors are determined and the distribution coefficient in a grid-connected scheme is established,and a hierarchical control method is adopted to perform a directional control of magnetic field during the multi-microgrid parallel operation,thus completing an optimization design of the field-oriented control of multi-microgrid parallel operation.Finally,simulation analysis is carried out to verify the voltage regulation speed,power stability and power regulation under the proposed control strategy.Results show that the proposed fieldoriented control strategy for multi-microgrid parallel operation is effective.