Method and device for accurately setting automatic quasi-synchronization parameter fixed value of hydroelectric generating set

The invention discloses a hydroelectric generating set automatic quasi-synchronization parameter constant value accurate setting method and device, and the method comprises the steps: collecting the specific set electrical characteristic parameters of each hydroelectric generating set, creating a simulation model for accessing a single machine to an infinite power grid, and analyzing the influence of a voltage difference, a frequency difference and a phase difference on synchronization; automatically adjusting the frequency difference and the phase difference according to the priority, and entering a synchronous control parameter automatic optimization process; and automatically determining an optimal control parameter value according to a criterion condition, then carrying out a real machine test of the unit by using the optimal control parameter value, and determining a final automatic quasi-synchronization constant value. Based on electromagnetic transient simulation, according to the specific unit electri