Non-synchronous fast micro grid intelligent gateway system and control method
A smart gateway and micro-grid technology, applied in the direction of electrical components, circuit devices, etc., can solve the problems of inability to realize control functions, long preparation time for grid connection, low speed and stability, etc.
Active Publication Date: 2015-01-28
EAST GRP CO LTD
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Problems solved by technology
This method takes a long time to prepare for grid connection. At the same time, because it only has the connection function and cannot realize the control function, its speed and stability are not very high.
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[0030] refer to figure 1, the asynchronous fast microgrid intelligent gateway system according to the present invention, which includes a gateway converter and a bypass contactor connecting the microgrid and the grid, the gateway converter includes a matrix converter, a first contactor, a second contactor, The input filter, output filter, drive circuit, control circuit and protection circuit, the matrix converter are electrically connected to the input filter and the output filter respectively, the input filter is electrically connected to the microgrid through the first contactor, and the output filter is electrically connected to the microgrid through the first contactor. The second contactor is electrically connected to the grid, the drive circuit and the protection circuit are connected to the matrix converter, and the control circuit is connected to the drive circuit. The bypass contactor is electrically connected to the microgrid and the grid at both ends. There are two...
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The invention relates to a non-synchronous fast micro grid intelligent gateway system and a control method. The system comprises a gateway converter connecting a micro grid and a grid. The gateway converter comprises a matrix converter, a first contactor, a second contactor, an input filter, an output filter, a drive circuit, a control circuit, and a protection circuit. The matrix converter is electrically connected with the input filter and the output filter. The input filter is electrically connected with the micro grid through the first contactor. The output filter is electrically connected with the grid through the second contactor. The drive circuit and the protection circuit are connected with the matrix converter. The control circuit is connected with the drive circuit. The two ends of a bypass contactor are respectively and electrically connected with the micro grid and the grid. As the connector of the micro grid and the grid, the intelligent gateway of the invention enables isolation of the main grid from the micro grid to be realized, has strong anti-interference capability, causes little pollution to the grids, and is compact in structure. Moreover, the intelligent gateway system can be controlled flexibly; gateway switching can be carried out in a coordinated way; the loss is reduced; the reliability is increased; and the system has high practicality.
Description
technical field [0001] The invention relates to the technical field of intelligent microgrid control, in particular to an asynchronous fast microgrid intelligent gateway system and a control method. Background technique [0002] At present, the control of the connection between the microgrid and the grid, that is, the gateway, is completed through the on-off control of the circuit breaker. Therefore, it is necessary to ensure that the main grid and the microgrid are synchronized when connecting to the grid. This method takes a long time to prepare for grid connection, and because it only has the connection function and cannot realize the control function, its speed and stability are not very high. Contents of the invention [0003] In order to solve the above problems, the present invention provides an asynchronous fast micro-grid intelligent gateway system and control method. The intelligent gateway is used as the connection between the micro-grid and the main grid, and r...
Claims
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Inventor 龚勋郭蕾施永苏建徽徐海波
Owner EAST GRP CO LTD