Abstract
The active residential DC distribution feeder operation under integration of distributed solar photovoltaic generations (DSPVG) is expecting poor voltage profiles due to increasing demand of SPVG and load. This paper discusses, the dynamic droop based coordinated controlled voltage regulation approach to address the rise/drop of voltage in an active DC power distribution system (DCPDS). Modern DCPDSs are integrated with several SPVG and battery energy storage units (BESU). As in DCPDS, there is no reactive power, voltage profile can be regulated by controlling the active power injection into the system. During the peak generation of SPVG, charging of BESUs in DCPDS has been controlled based on state of charge (SoC) of the battery. Similarly, SoC based coordinated discharging approach has been presented during peak demands in reduced SPVG to support the voltage drop. A detailed investigation of voltage regulation of a residential DC distribution system (DCDS) is given to demonstrate the effectiveness of the proposed approach.
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