Microgrid Control Using Distributed SMC with Compensation of Network Irregularities

Abstract

This paper proposes a distributed Sliding Mode Controller (SMC) with network irregularities like time delay compensation for secondary voltage control of Microgrid. The distributed SMC is designed using the principle of multi-agent system and placed at each DGs of microgrid. The proposed DSM C controller is designed using the graph theory and so require the voltage information of neighbors DGs through communication network. However the neighbor voltage information might incur time delay in the communication network due to substantial distance between neighbors DGs and it may deteriorates the Microgrid performance. Pade Approximation technique is used to overcome the effect of communication network time delay. The efficacy of the proposed scheme is shown in simulation on a Microgrid test system.