The present invention provides a method for optimizing a power purchase scheme, a device for optimizing the power purchase scheme and electronic equipment, and relates to the technical field of electric power management. The electric power purchase scheme optimization method comprises the following steps: establishing an objective function to minimize the weighted value of the total electric powerpurchase cost and the electric power purchase risk value in the objective function; wherein, the total electric power purchase cost comprises the electric power purchase cost outside a preset time, the electric power purchase cost of a preset time and the electric power purchase cost of a spot market; constructing a constraint condition model of power purchase is established. According to the power purchase constraint condition model, based on the objective function, the power purchase data is calculated by the particle swarm algorithm, and the technical problem that the current power purchase strategy mainly considers that the market is too single to adapt to the constant change and development of the current market environment in the prior art is solved.