Load flow analysis for power management of Microgrid

A Microgrid is assumed to be a cluster of distributed generations operating as a single controllable system to provide reliable power to its local area. Integration and control of large number of sources in a Microgrid is not possible with normal P-Q controls. Microgrid requires algorithm capable of handling various control modes such as PQ, PV and Droop control. A new formulation is required to provide proper power flow analysis for Microgrid taking into consideration its special philosophy of operation. In this paper, a generic three phase load flow algorithm has been formulated for Microgrid. This algorithm is based on a convergent Newton-Trust region method and has incorporated all operating modes of Microgrid. The Load Flow method has been implemented on IEEE 14 bus balanced as well as 6 bus unbalanced systems.