The invention discloses a method for comparison and selection of power plant access system schemes. Firstly, several feasible power plant access system schemes are selected through a feasibility study; maximum power receiving capacities of the several feasible power plant access system schemes are searched and calculated on the premise that safe and stable operation of a system is ensured to obtain the power receiving capacities of a regional power grid under different power plant access system schemes; the power receiving capacities and investment in a power plant access system are considered comprehensively, and a power plant access system scheme with the best comprehensive benefit is obtained through multi-objective optimization. According to the technical scheme of the method for the comparison and selection of the power plant access system schemes, access system investment and the power receiving capacity of the regional power grid can be taken into comprehensive consideration for the power plant access system schemes, so that the power plant access system scheme with the best comprehensive benefit is selected.