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Direct-current micro-grid distributed autonomous coordination control method and control system

A DC micro-grid and coordinated control technology, which is applied in the direction of parallel operation of DC power supplies, can solve problems such as mode error switching and weak anti-disturbance ability, and achieve simple operation, solve the problem of weak anti-disturbance ability, and improve anti-interference performance Effect

Active Publication Date: 2019-05-31
ANHUI UNIVERSITY OF TECHNOLOGY
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Problems solved by technology

[0006] The purpose of the present invention is to provide a DC micro-grid distributed autonomous coordinated control method and control system, which effectively solves the problem of weak anti-disturbance ability at the voltage segmentation point and incorrect switching of modes in the traditional coordinated control based on bus voltage single variable

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  • Direct-current micro-grid distributed autonomous coordination control method and control system
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  • Direct-current micro-grid distributed autonomous coordination control method and control system

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Embodiment Construction

[0040] In order to better understand the technical content of the present invention, specific embodiments are given together with the attached drawings for description as follows.

[0041] Aspects of the invention are described in this disclosure with reference to the accompanying drawings, which show a number of illustrated embodiments. Embodiments of the present disclosure are not necessarily intended to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in more detail below, can be implemented in any of numerous ways, since the concepts and embodiments disclosed herein are not limited to any implementation. In addition, some aspects of the present disclosure may be used alone or in any suitable combination with other aspects of the present disclosure.

[0042] In this embodiment, the bus voltage and current are divided into intervals as follows:

[0043] According to the bus...

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Abstract

The invention relates to a direct-current micro-grid distributed autonomous coordination control method and a control system. The invention aims at increasing an anti-interference ability and work reliability of the direct-current micro-grid distributed autonomous coordination control system. The invention especially relates to a control method and a control system of an operating state and load switching when a plurality of bus micro-source units are connected in parallel. Through constructing multivariable hysteresis of a voltage and a current, a problem that a single-variable DBS coordinates and controls a voltage disturbance at a voltage segment point so as to cause mode mis-switching is solved.

Description

technical field [0001] The present invention relates to a DC microgrid distributed autonomous coordinated control method and a control system, aiming at improving the anti-disturbance ability and working reliability of the DC microgrid distributed autonomous coordinated control system, specifically related to the parallel connection of multiple busbar micro-source units A control method and control system for operating state and load switching. Background technique [0002] With the rapid development of the national economy and the continuous expansion of the power system, the disadvantages of large-scale power grids have become increasingly prominent, making it difficult to meet the diverse and high-reliability power needs. As an important component of the smart grid, the microgrid has the advantages of flexibility and controllability, and provides an effective solution for the integration and utilization of distributed energy. The DC microgrid is easy to integrate photovo...

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Application Information

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IPC IPC(8): H02J1/10
Inventor 刘宿城黄堃刘晓东方炜
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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