System for starting large-scale power load in micro-grid

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United States of America Patent

PATENT NO 9882385
SERIAL NO

15038714

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Abstract

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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.

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Patent Owner(s)

Patent OwnerAddress
STATE GRID CORPORATION OF CHINANO 86 WEST CHANG'AN STREET XICHENG DISTRICT BEIJING 100031
HEBEI ELECTRIC POWER COMMISSIONING INSTITUTE238 TIYU SOUTH ST SHIJIAZHUANG HEBEI 050021
STATE GRID HEBEI ELECTRIC POWER RESEARCH INSTITUTE050021 NO 238 SOUTH SPORTS STREET HEBEI SHIJIAZHUANG SHIJIAZHUANG CITY HEBEI PROVINCE 050021

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fan, Hui Hebei, CN 17 124
Gao, Zhiqiang Hebei, CN 122 1586
Hu, Wenping Hebei, CN 8 1
Jing, Hao Hebei, CN 43 166
Liang, Bin Hebei, CN 102 156
Meng, Liang Hebei, CN 23 484
Wang, Wenxin Hebei, CN 20 61

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