When traditional droop control is adopted for microgrids operating on isolated islands

it is impossible to achieve zero-diffe-rence control of bus voltage and frequency.Based on the theory of finite time consistency

it constructs a distributed collaborative control method for voltage and frequency.Firstly

by combining communication technology with the principle of hierarchical control

the system can achieve zero difference frequency modulation and voltage recovery while reducing the communication pressure between micro sources.Secondly

for the secondary control strategy

it considers the power supply ratio between micro sources to improve the efficiency of micro source utilization and avoid single point faults under centralized control mode.Finally

by building a simulation model of a multi micro source isolated microgrid

it verifies the rationality of the control strategy and the effectiveness of the secondary control strategy based on distributed consistency algorithm.It realizes the voltage compensation of the island microgrid

the no-difference regulation of frequency and the plug-and-play function of micro-sources

which improves the reliability and flexibility of the system.