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Distributed power supply grid-connection control system

A distributed power and control system technology, applied in the field of power electronics, can solve problems such as power system control strategy imbalance, and achieve the effects of simple control, guaranteed stability, and simple system structure

Active Publication Date: 2015-09-30
HAI YING GROUP OF AEROSPACE IND +1
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  • Abstract
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  • Claims
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Problems solved by technology

[0002] With the development of energy technology, distributed power generation technology has been improved. Distributed power generation is highly respected due to its flexible power supply and high energy utilization rate. However, many distributed interventions will lead to imbalances in power system control strategies. The best way to achieve the best of both worlds It is to improve the external characteristics of the existing distributed power supply and make it adapt to the existing power system

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  • Distributed power supply grid-connection control system
  • Distributed power supply grid-connection control system
  • Distributed power supply grid-connection control system

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Embodiment Construction

[0018] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0019] The grid-connected control system of distributed power sources in the embodiment of the present invention draws on the advantages of synchronous generators in the operation of power systems, and considers that if distributed power sources have the characteristics of large impedance, large inertia, voltage regulation, frequency regulation, and power regulation of synchronous generators , then the distributed power supply will not affect the operation of the power system, and the distributed power supply and the power system ...

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Abstract

The invention discloses a distributed power supply grid-connection control system comprising a distributed power supply, a bypass grid connection inverse circuit, a virtual synchronous generator circuit and a master control device. The bypass grid connection inverse circuit is connected with the distributed power supply and a grid; the virtual synchronous generator circuit is connected with the distributed power supply and the grid; when grid connection is required, the master control device controls the distributed power supply, the bypass grid connection inverse circuit and the virtual synchronous generator circuit according to the state of the virtual synchronous generator circuit to enable the distributed power supply and the grid to perform grid-connected operation. The distributed power supply grid-connection control system can realize flexible connection of the distributed power supply and a power distribution network, and reliability in grid connection of the distributed power supply is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of power electronics, and in particular relates to a distributed power grid-connected control system. Background technique [0002] With the development of energy technology, distributed power generation technology has been improved. Distributed power generation is highly respected due to its flexible power supply and high energy utilization rate. However, many distributed interventions will lead to imbalances in power system control strategies. The best way to achieve the best of both worlds It is to improve the external characteristics of the existing distributed power supply and make it adapt to the existing power system. Contents of the invention [0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent. Therefore, the present invention needs to propose a distributed power grid-connected control system, which can realize the flexible con...

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Application Information

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IPC IPC(8): H02J3/38
Inventor 霍雪娇吕志鹏李一凡朱明星黄尧何頔
Owner HAI YING GROUP OF AEROSPACE IND
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