Energy storage transient power coordinated control method for restraining subsequent commutation failures

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.