Patent ID: 11888315
Assignee: HUAZHONG UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 0:
1. An energy storage transient power coordinated control method for restraining subsequent commutation failures, comprising the following steps:
S1: detecting a DC current, a AC bus voltage, and a arc quenching angle on a inverter side, and
controlling an energy storage power station to enter a transient control mode, when the DC current is greater than a first current threshold, the AC bus voltage is less than a voltage threshold, or the arc quenching angle is less than a first arc quenching angle threshold;
S2: determining an output time instruction corresponding to an active output of an energy storage by using a relationship between the DC current, the first current threshold, and a second current threshold, the first current threshold being greater than the second current threshold; and
determining an output time instruction corresponding to a reactive power output of the energy storage by using a relationship between the inverter arc quenching angle, the first arc quenching angle threshold, and a second arc quenching angle threshold, the first arc quenching angle threshold being less than the second arc quenching angle threshold;
S3: determining an output amplitude instruction corresponding to the active power output of the energy storage by using a relationship between the AC bus voltage and the voltage threshold; and
determining an output amplitude instruction corresponding to the reactive power output of the energy storage by using a constraint of a total energy storage capacity; and
S4: issuing the output time instruction and the output amplitude instruction corresponding to the active power output and the reactive power output of the energy storage of a target output amplitude to the energy storage power station at a target output time, the output time instruction carries the target output time, and the output amplitude instruction carries the target output amplitude.