Control Strategy for Distribution Generation Inverters to Maximize the Voltage Support in the Lowest Phase During Voltage Sags

摘要: Voltage sags are considered one of the worst perturbations in power systems. Distributed generation facilities allowed to disconnect from grid during faults whenever voltage is below a certain threshold. During these severe contingencies, cascade disconnection could start, yielding blackout. To minimize risk outage, inverter-based distributed-generation systems can help support by appropriately selecting control objective. Which strategy performs better when supporting complex decision that depends on many variables. This paper presents scheme implements smart and simple fault: maximum for lowest phase voltage. Therefore, faulted more affected sag be supported since this increases as much possible, reducing undervoltage disconnection. The proposed controller has following features: 1) maximizes phase, 2) injects rated current inverter, 3) balances active reactive references deal with resistive inductive grids. proposal validated means experimental results laboratory prototype.