Hybrid microgrid system and control method thereof

A control method and micro-grid technology, applied in the direction of electrical components, AC network load balancing, single-network parallel feeding arrangement, etc., can solve the problems of inability to achieve a high proportion of local consumption of distributed energy, singleness and imperfect control methods, Reduce the flexibility of system operation and other issues, to achieve the effect of improving utilization efficiency and local consumption efficiency, reducing the number of converters, and improving efficiency

Active Publication Date: 2020-04-07
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The singleness of the architecture and the imperfection of the control method reduce the flexibility of the system operation, make it difficult to face complex working conditions, and fail to achieve a high proportion of local consumption of distributed energy

Method used

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  • Hybrid microgrid system and control method thereof
  • Hybrid microgrid system and control method thereof
  • Hybrid microgrid system and control method thereof

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Embodiment Construction

[0019] 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, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some structures related to the present invention are shown in the drawings but not all structures.

[0020] figure 1 It is a schematic structural diagram of a hybrid microgrid system provided by the embodiment of the present invention. This embodiment is applicable to the situation of connecting a DC subnet and an AC subnet, such as figure 1 As shown, the hybrid microgrid includes:

[0021] Central control unit 1, bidirectional DC / AC converter 3, bidirectional DC / DC converter 41, battery 43, DC subnet and AC subnet, central control unit 1 and bidirectional DC / AC converter 3, bidirectional The DC / DC converter 41...

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Abstract

The embodiment of the invention discloses a hybrid microgrid system and a control method thereof. The hybrid microgrid system comprises: a central control unit, a bidirectional DC / AC converter, a bidirectional DC / DC converter, a battery, a DC sub-network and an AC sub-network; the central control unit is in communication connection with the bidirectional DC / AC converter and the bidirectional DC / DCconverter, the DC side of the bidirectional DC / AC converter is connected with the first DC bus, and the battery is connected with the first DC bus through the bidirectional DC / DC converter; the DC sub-network is connected with a second DC bus, the second DC bus is connected with the first DC bus, and the DC sub-network at least comprises a DC power generation device and a DC controllable load; the alternating current side of the bidirectional DC / AC converter is connected with an external network and an alternating current bus, and the alternating current sub-network is connected with the alternating current bus; the AC sub-network at least comprises an AC power generation device and an AC controllable load. The hybrid microgrid system has the advantages of high efficiency, flexible control and strong anti-risk capability.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of micro-grid operation control, in particular to a hybrid micro-grid system and a control method thereof. Background technique [0002] In recent years, distributed renewable energy represented by photovoltaics and wind power has been widely used. As a small power system that integrates distributed power, energy storage, load and control network, microgrid is an important way to overcome the intermittent and random power generation of renewable energy. It is an effective way to improve the quality of power supply and the stability of system operation. In modern buildings, building power distribution networks in the form of microgrids can achieve high-density renewable energy power generation and achieve high-quality energy-saving and emission-reduction effects. [0003] However, there are still deficiencies in the application of microgrids in buildings. First of all, in terms of syst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J5/00H02J3/32H02J3/38
CPCH02J5/00H02J3/32H02J3/38
Inventor 蹇林旎喻航尚一通
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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