| Abstract |
In islanded microgrids, the existence of nonlinear electric loads may cause voltage distortion andaffect the performance of power quality sensitive equipment. Thanks to the prevalent utilization ofinterfacing power electronic devices and information/communication technologies, distributedgenerators can be employed as compensators to enhance the power quality on consumer side.However, conventional centralized control is facing obstacles because of the distributed fashion ofgeneration and consumption. Accordingly, this paper proposes a consensus algorithm baseddistributed hierarchical control to realize voltage harmonic compensation and accurate current sharingin multi-bus islanded microgrids. Low order harmonic components are considered as examples in thispaper. Harmonic current sharing is also realized among distributed generators by applying theproposed methods. Plug-and-play capability is demonstrated for flexible operation. The proposedmethod is based on proper analysis and modeling of the system. |
