交流微电网稳定控制器并联效率优化设计

Efficiency Optimization Design of Parallel AC Microgrid Stability Controller

针对微电网孤网状态下多台稳定控制器并联运行时的效率问题,利用一致性算法,使每台稳定控制器获取全局信息,并结合交流母线的电压信息调节稳定控制器投入运行数量。结合稳定控制器典型的效率特性曲线,实现各台稳定控制器下垂特性的自适应调节,对各台换流器输出功率进行实时调节,最终实现多台稳定控制器并联运行效率的全局优化。在MATLAB/Simulink中仿真验证了多代理系统所采用的一致性算法能够保证收敛性,并能实现对于多台稳定控制器出力的协调控制。最后搭建试验平台,试验结果验证了多台稳定控制器并联运行优化控制的可行性。

Aiming at the efficiency problem of multi parallel stability controllers under the condition of island operation,each stability controller can receive global information by consensus algorithm,and the operation number of stability controllers can be adjusted by combining with the voltage information of AC bus. By combining the typical efficiency characteristic curve of a stability controllers,adaptive droop characteristic and output power real-time control of each stability controllers can be achieved,and eventually globe efficiency optimization of multi parallel stability controllers can be achieved. The simulation model was built in MATLAB / Simulink. The simulation results show that the consensus algorithm adopted by the multi agent system can ensure the convergence,and can achieve the coordinated control of the output of multi stability controllers. Finally,the experimental platform is set up in the laboratory,the test results verify the feasibility of the optimal control of multi parallel stability controllers.