Higher Order Identification and Control of Single Phase Inverters for Volt-Var Compensation

摘要

A novel approach for coordinated reactive power control strategy for multiple Single Phase Inverters (SPIs-here grid connected) using a higher order Multiple Input Multiple Output (MIMO) identification is proposed in this paper. The proposed single phase inverter control strategy includes a supervisory control which encapsulates the generation of reactive power references for local inverter controllers using a higher order Alternating Direction Method of Multipliers (ADMM) technique. The architecture is based on dq-frame decoupled active and reactive power control for the SPIs. Main contribution is the high order identification technique that captures the sensitivity of the reactive power flow with respect to the voltage at the point of interest in the Distribution Network (DN). The results are tested on IEEE 123 bus system and it is observed that the proposed architecture shows higher percentage improvement in voltage control when compared to lower order identifiers.