Management and operation method of electrical energy

The invention discloses a management operation method of electric energy. The method comprises the following steps: step 1, constructing a direct-current power distribution system; the direct-current power distribution system comprises a medium-voltage direct-current bus, a photovoltaic power generation system, a wind power generation system, a fuel power generation system and an energy storage system. The flexible load is connected to the medium-voltage direct-current bus through a level converter. The medium-voltage direct-current bus is connected with the alternating-current power distribution subareas through the VSC, and the alternating-current power distribution subareas are connected with a power transmission network together. And step 2, setting a scheduling model of the DC power distribution system according to three time scales of future 24 hours, future 15 minutes and future 30 seconds, solving the optimal scheduling model and obtaining an optimal power instruction of the time scale, generating the