Control of public dc street/road lighting microgrids with microgeneration and storage capability based on a power-line signaling dependent droop

摘要: In this paper, a modified droop control combined with power-line signaling is applied to several public dc street/road lighting microgrids microgeneration and storage capability. The idea communicate low-level microgrid's main converter the battery management system (BMS) injecting high-frequency signal into bus. Depending on value of frequency, batteries will either charge or discharge. If there discharge command, then power supplied by relies following classic droop. On contrary, whether BMS checks status, i.e. state (SoC), absorbs certain current. higher SoC, lower current they absorb in order protect devices. addition, all these are connected ac mains through grid-tie three-phase inverter (GTI). Its mission compensate unbalances absorbing from grid. Furthermore, GTI can inject reactive if it required without affecting behavior other subsystems. Hence, high voltage bus defines an upper-level microgrid.