Hayes Soloway P.C.
System for starting large-scale power load in micro-grid
A system for staring a large-scale power load in a micro grid comprises a PCC grid connection switch, a micro grid alternating-current bus, an active power filter (APF), an energy storage inverter, an energy storage battery, a current-limiting resistor R, contactors K1-K3, a time relay KT, a power supply relay board, a micro grid maser control system, a frequency converter rectifying circuit, a frequency converter filter circuit, and a frequency converter inverter circuit. There are the advantages: an output torque of a power load can be effectively improved by using a variable frequency starting apparatus, and a starting current is also small; the provided method can effectively reduce a harmonic current when a variable frequency starting apparatus starts a power load, the phenomenon that two power sources supply power on a direct-current side of the variable frequency starting apparatus at the same time is avoided, thereby improving the stability and the economy of a micro grid.
STATE GRID CORPORATION OF CHINA STATE GRID HEBEI ELECTRIC POWER RESEARCH INSTITUTE HEBEI ELECTRIC POWER COMMISSIONING INSTITUTE
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Hui Wenping Wenxin Bin Liang Hao Zhiqiang
Fan Hu Wang Liang Meng Jing Gao