Control method for restraining power fluctuation of power system containing doubly-fed wind power plant

The invention relates to the technical field of electric power systems containing doubly-fed wind power plants, in particular to a control method for restraining power fluctuation of a power system containing a doubly-fed wind power plant; an SMES superconducting magnetic energy storage device is arranged at an outlet bus of the wind power plant, the balance of electric energy at the grid-connected position is maintained by absorbing or releasing energy by the SMES, and the influence of disturbance caused by the uncertainty of the wind power on the power grid is reduced, so that the purpose ofrestraining the power fluctuation of the electric power system containing the doubly-fed wind power plant is achieved; meanwhile, the SMES can store energy and can quickly release energy, and has a rapid electromagnetic response characteristic and a very high energy storage efficiency; in addition, the SMES is used for storing electromagnetic energy, and other forms of energy conversion are not needed, so that the energy can be stored for a long time without loss; and meanwhile, the advantages of convenience in adjustment and maintenance, no pollution and the like are achieved, so that the system is an optimal choice for inhibiting the power fluctuation of the power system containing the doubly-fed wind power plant.