Electric system medium and long term transaction operation plan obtaining method taking wind electricity harmonic absorption into consideration

The invention provides an electric system medium and long term transaction operation plan obtaining method taking wind electricity harmonic absorption into consideration. The consideration over the system fairness is achieved through the introduction of the thermal power generating unit nominal generated capacity and the thermal power generating unit nominal load rate, the harmonic absorption of the wind electricity is achieved through the method of the combination of the method of carrying out nominal generated capacity supplement on a thermal power generating unit through the wind electricity and the method for restraining the thermal power generating unit minimum nominal electricity generation load rate, a mathematical model taking the problems of the system fairness and the electric system medium and long term transaction operation plan including the wind electricity absorption into consideration is established on the basis of the harmonic absorption of the wind electricity, and a powerful guarantee is provided for formulating the medium and long term transaction and operation plan while the wind electricity absorption and the fairness of the system are taken into consideration.