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AC-DC hybrid microgrid and its protection control center and protection control method

A technology of AC-DC hybrid protection and control, applied in the direction of AC network circuits, AC networks with the same frequency from different sources, electrical components, etc., can solve the problem of insufficient ability of coordinated control and the inability of intelligent reconstruction and operation of AC-DC hybrid microgrid Mature and other issues, to achieve the effect of improving power supply reliability, improving safety and economy, and optimizing system operation

Active Publication Date: 2021-01-08
TSINGHUA UNIV
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Problems solved by technology

However, the protection and control system of the AC-DC hybrid power grid is not capable of synergistically controlling the AC and DC networks at the same time.
In addition, the intelligent reconfiguration operation of the AC-DC hybrid microgrid is still immature, and the above-mentioned defects are problems that need to be solved urgently in this field

Method used

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  • AC-DC hybrid microgrid and its protection control center and protection control method
  • AC-DC hybrid microgrid and its protection control center and protection control method
  • AC-DC hybrid microgrid and its protection control center and protection control method

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Embodiment Construction

[0034] In order to make the objects, technical solutions and advantages of the present invention more apparent, exemplary embodiments according to the present invention will be described in detail below with reference to the accompanying drawings. Apparently, the described embodiments are only some embodiments of the present invention, rather than all embodiments of the present invention, and it should be understood that the present invention is not limited by the exemplary embodiments described here. Based on the embodiments of the present invention described in the present invention, all other embodiments obtained by those skilled in the art without creative effort shall fall within the protection scope of the present invention.

[0035] see figure 1 , figure 1 It is a schematic structural diagram of an AC / DC hybrid microgrid according to an embodiment of the present invention. In order to solve the above-mentioned problems, an embodiment of the present invention provides ...

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Abstract

The invention discloses an alternating-current-direct-current hybrid microgrid and a protection control center and protection control method thereof. The alternating-current-direct-current hybrid microgrid comprises an alternating-current network, a direct-current network and a protection control center, wherein the protection control center is connected with the alternating-current network and the direct-current network through a communication network; the protection control center builds corresponding optimal objects and models according to set protection control strategies and a fault stateand a normal running state of the alternating-current-direct-current hybrid microgrid, and an optimal case of reconstruction running of the alternating-current-direct-current hybrid microgrid is calculated and solved with the optimization algorithm; according to the optimal case, the alternating-current network and / or the direct-current network are / is controlled, electrical connection and a running mode of the alternating-current network and / or the direct-current network are adjusted, and the alternating-current network and / or the direct-current network can be actively reconstructed accordingto real-time running conditions under fault and non-fault conditions. The invention also discloses the protection control method of the alternating-current-direct-current hybrid microgrid.

Description

technical field [0001] The invention relates to an AC / DC hybrid microgrid, in particular to an AC / DC hybrid microgrid with an intelligent reconfiguration function, a protection control center and a protection control method thereof. Background technique [0002] With the rapid development of related technical fields of power electronic converters, the topology and operation mode of traditional AC power systems are facing new changes. The AC-DC hybrid power grid has received more and more attention because it has both AC and DC power supply networks. However, the protection and control system of the AC-DC hybrid power grid is not capable of synergistically controlling the AC and DC networks at the same time. In addition, the intelligent reconfiguration operation of the AC-DC hybrid microgrid is still immature, and the above-mentioned defects are problems that need to be solved urgently in this field. [0003] Therefore, it is urgent to start from the safe and efficient oper...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/00H02J3/38H02J3/06
CPCH02J3/06H02J3/38H02J3/0073H02J2203/20
Inventor 林恒伟孙凯
Owner TSINGHUA UNIV
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