Zone area-microgrid reliability collaborative planning method based on mixed integer second-order cone model

The invention relates to a transformer area-microgrid reliability collaborative planning method based on a mixed integer second-order cone model, and belongs to the technical field of network planning of a power distribution transformer area containing a microgrid. According to the technical scheme, any micro-grid in a transformer area is regarded as a special node of the transformer area, and an equivalent node power model of the micro-grid is established; in the off-grid operation mode of the micro-grid, it is assumed that an adjustable backup power source is stable and sufficient enough and the micro-grid does not have load loss, the node power P1 is equal to 0 at the moment, in the grid-connected operation mode, P2 is equal to S + W-L, and S, W and L are the annual mean values of photovoltaic power, wind power and load power in the micro-grid respectively; and solving S, W and L values, and obtaining an optimized reliability collaborative planning scheme through model operation. According to the method, t