Analysis of Distributed Reactive Power Allocation Control Strategy Based on Adaptive Virtual Impedance
This paper describes that due to mismatched line impedance,traditional droop control methods are difficult to achieve reasonable allocation of output power from parallel micro sources in distributed power sources.It proposes a new control strategy based on adaptive virtual impedance method and dynamic consistency algorithm to ensure better allocation of reactive power in the event of line impedance mismatch.It uses dynamic consistency algorithm to estimate and adjust the value of virtual impedance(Ⅵ),adding the obtained Ⅵ to the total impedance to calculate the new reference voltage of the main droop controller.This control method not only improves reactive power sharing,but also does not require a central controller or line impedance value.
droop controlconsistency algorithmreactive power allocation
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