Micro-grid parallel connection networking control system based on various inverters
A parallel networking and control system technology, applied in the direction of single-network parallel feeding arrangement, etc., can solve the problems of long energy storage time, small self-loss, short cycle life, etc., to avoid instability, improve power supply quality and energy utilization Efficiency, the effect of no emission of harmful substances
Inactive Publication Date: 2015-10-28
ANHUI CANBANG ELECTRIC
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Battery-type energy storage devices have low self-loss and long energy storage time; but the response speed is slow and the cycle life is short
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[0011] In order to make the object, technical solution and advantages of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0012] like figure 1 As shown, the microgrid parallel networking control system based on various inverters includes a fuel cell module, a DC / DC module and a DC / AC module. The DC / DC module and the DC / AC module are connected on the same common line. When the inverter in the energy storage system works in the isolated grid mode, the energy storage system serves as the main power supply unit to provide electric energy for the load, and the inverter The double closed-loop control mode of the voltage outer loop inductor current inner loop is adopted.
[0013] Among them, the DC / DC module is ...
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The invention relates to a micro-grid parallel-connection networking control system based on various inverters. The system comprises a fuel cell module, a DC / DC module, and a DC / AC module. The system is characterized in that the fuel cell module employs batteries formed by series and parallel connection of single hydrogen fuel storage batteries, the DC / DC module and the DC / AC module are connected to the same common wire, when an inverter of an energy storage system works in an isolated network mode, the energy storage system serves as the main power supply unit for providing electric energy for a load, and the inverter employs double-closed-loop control mode of outer voltage loop and inductance-current inner loop. According to the system, one battery module is formed by series connection of single hydrogen fuel batteries, hydrogen does not release pollutants such as harmful gases or dust etc. during combustion as the important secondary energy, the hydrogen is generated via renewable energies, the whole cycle process does not release harmful substances, and is clean and pollution-free, the problem of instable generation intermittence of new energy of the micro-grid can be effectively avoided, and the power supply quality and the energy utilization efficiency can be improved.
Description
technical field [0001] The invention relates to the field of inverter switches, in particular to a microgrid parallel networking control system based on various inverters. Background technique [0002] With the shortage of resources and the continuous increase of load, the distributed power generation technology of renewable energy such as wind energy and solar energy has been developed rapidly in countries all over the world. The microgrid combines distributed power generation, loads, energy storage equipment and control devices to form a single controllable control system. The microgrid can operate in an island / grid-connected mode. When a serious failure occurs in the large power grid, the microgrid operates in an island , the energy storage system is used as the main power supply to maintain the normal and stable operation of the system. Undoubtedly, the control strategy of the energy storage inverter is a comprehensive study of the power quality of the microgrid. [00...
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IPC IPC(8): H02J3/38
Inventor εδΈε
Owner ANHUI CANBANG ELECTRIC