Zero-Error Frequency Regulation Control Method for Microgrids Based on Consensus Algorithm

For islanded microgrids, the microgrid system frequency with traditional droop control often deviates from the rated frequency due to the variation of output power. Therefore, a self-adjusting droop coefficient control strategy for microgrids is proposed. Through the consistency algorithm, the micro-power source in the micro-grid obtains the self-adjusting amount of the droop coefficient to achieve no static difference in the frequency of the micro-grid, while ensuring that the active power shares the load according to the rated capacity. A microgrid simulation model is built in PSCAD, and the simulation result verifies the effectiveness of the control strategy through comparison with that of traditional droop control.