Patent ID: 11888315
Assignee: STATE GRID HENAN ELECTRIC POWER RESEARCH INSTITUTE
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 1:
2. The energy storage transient power coordinated control method for restraining subsequent commutation failures of claim 1, characterized in that the step S2 comprises:
S201: issuing an active power descending edge instruction when the DC current being greater than the first current threshold is detected, the value PT of the output time instruction corresponding to the active output of an energy storage being −1, the active power descending edge instruction being used to control the energy storage power station to absorb an active power of the inverter side of the high voltage direct current (HVDC) system;
issuing a reactive power rising edge instruction when the arc quenching angle being less than the first arc quenching angle threshold is detected, the value of the reactive power output time instruction QT being 1, the reactive power rising edge instruction being used to control the energy storage to release a reactive power to the inverter side of the HVDC system;
S202: maintaining PT to be −1 when the DC current decreasing to be successively lower than the first current threshold and the second threshold is detected;
maintaining QT to be 1 when the arc quenching angle increasing to be successively larger than the first arc quenching angle threshold and the second arc quenching angle threshold is detected;
S203: changing PT to 0 when the DC current rising to exceed the second current threshold is detected; changing QT to 0 when the arc quenching angle reducing to be less than the second arc quenching angle threshold is detected, the;
S204: performing the step S201 when the DC current rising to exceed the first current threshold is detected, or when the arc quenching angle reducing to be less than the first arc quenching angle threshold is detected.