There are usually only three types of nodes

viz

the slack node

active power-voltage node and active power-reactive power node in the traditional power flow calculation based on Newton-Raphson method. So it is difficult to calculate the power flow of microgrid with droop controlled distributed generators using the traditional Newton-Raphson method directly. A novel power flow calculation method similar to Benders decomposition is proposed. The power flow calculation of islanded microgrid under decentralized droop control strategy is decomposed into a traditional Newton-Raphson power flow calculation sub-problem and a droop control node updating sub-problem

while solving the original problem via the alternative iteration of two sub-problems. In this algorithm

the complex original problem is decomposed into two simple sub-problems

which makes solving the original problem efficient and fast. By the simulation tests on case studies

the feasibility and validity of the proposed methodology are proved.