An energy interaction system for adaptive mobile microgrid
An interactive system and micro-grid technology, applied in the field of new energy access to power system support, can solve the problems of uncertain current direction, low quality of power supply, and disparity in power supply capacity on both sides, reducing carbon emissions and improving power supply reliability. reliability and effective interface design
Active Publication Date: 2016-01-20
STATE GRID CORP OF CHINA +1
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Problems solved by technology
[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide an energy interaction system for an adaptive mobile micro-grid. The present invention solves the problem of poor quality of power supply and current direction caused by intermittent power supply and AC / DC power supply system fluctuations. Uncertainty and large disparity in power supply capacity on both sides, to achieve flexible configuration of the energy storage system and its connected distributed power sources and loads with stable grid connection on the AC side and stable access to the DC side with high reliability
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[0023] The specific implementation manners of the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0024] The invention provides an energy interaction system of an adaptive mobile microgrid. The system converts power-type energy storage with voltage fluctuations into stable energy-type energy storage through a voltage identification module, a DC / DC bidirectional interface and a DC / AC bidirectional interface.
[0025] The system includes a voltage identification module, a transformer, an AC / DC bidirectional interface, a DC / DC bidirectional interface, a DC / AC bidirectional interface and an energy storage module; the input ends of the system are respectively provided with an AC voltage identification module and a DC voltage identification module; The AC voltage identification module is respectively connected to the transformer and the AC / DC bidirectional interface; the DC voltage identification module is respectively conn...
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The invention relates to an energy interaction system of a self-adaption mobile microgrid. According to the system, by means of a voltage recognition module, a DC / DC two-way port and a DC / AC two-way port, power type stored energy conversion with fluctuation voltage is converted into stable energy type stored energy. The input end of the system is provided with an AC voltage recognition module and a DC voltage recognition module, wherein the AC voltage recognition module is connected with a transformer and an AC / DC two-way port, the DC voltage recognition module is connected with the DC / DC two-way port and a direct-current bus, the AC / DC two-way port is connected with the direct-current bus, the direct-current bus is connected with a constant-voltage direct-current bus through the DC / DC two-way port, the constant-voltage direct-current bus outputs stable voltage through the DC / AC two-way port and the DC / DC two-way port, the problems that due to fluctuation of an intermittent power supply and fluctuation of a direct-current power supply system, power supply quality is not high, the direction of currents is not determined, and power capacities on the two sides are greatly different are solved, and flexible allocation of an energy storage system is achieved. High-reliability operation that stable grid connection of a distributed power supply and an alternating-current side of load and stable access of a direct-current side is achieved.
Description
technical field [0001] The invention relates to the technical field of new energy access power system support, in particular to an energy interaction system for an adaptive mobile microgrid. Background technique [0002] With the user's requirements for high reliability and high power quality of power supply, as well as a large number of random and intermittent distributed power sources, microgrids can be used in various ways (different voltage levels, Grid-connected interface, different control methods) connected to the distribution network, put forward higher requirements for the stable operation of the distribution network. [0003] The energy storage battery system relies on a single DC / DC interface and DC / AC interface to realize the interconnection with the AC and DC power grid, which can optimize the energy management and dispatch of the power grid to a certain extent, improve the energy management level of users and improve the reliability of power supply. Function; ...
Claims
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IPC IPC(8): H02J3/36H02J3/28H02J7/34
CPCY02E60/60
Inventor 吴鸣苏剑刘海涛季宇李洋
Owner STATE GRID CORP OF CHINA