Improved Droop Control Method for Micro-Turbine Generator Set

In order to realize the stability of the output voltage index of microgrid isolated island operation with micro-turbine, a three-phase four-wire micro-turbine power generation system model with positive and negative buses was built, the traditional droop control was improved and a translational droop control strategy was proposed. The traditional droop control curve is shifted according to the power change of the system, to compensate the system voltage frequency and amplitude in real time. The strategy enables the unit's output to be quickly adjusted to ensure stable operation of the load. Simulation and experiment verify the feasibility and effectiveness of the strategy.