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A wireless network-based micro-grid coordinated control system and method

A coordinated control system and coordinated control technology, applied in AC network circuits, AC network load balancing, flexible AC transmission systems, etc., can solve problems such as power imbalance in microgrids

Active Publication Date: 2021-09-14
WUHAN UNIV
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  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

Otherwise, the voltage and frequency deviation of the microgrid may exceed the allowable range and cause the deterioration of power imbalance

Method used

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  • A wireless network-based micro-grid coordinated control system and method
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  • A wireless network-based micro-grid coordinated control system and method

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Embodiment approach

[0069] Combine below Figure 1-Figure 11 , the specific embodiment of the present invention will be further specifically described. The embodiment of the inventive method specifically comprises the following steps:

[0070] Step 1: The coordinating controller collects the three-phase voltage of the common coupling point through wireless communication, and changes the three-phase voltage of the common coupling point by Clarke;

[0071] The three-phase voltages at the common coupling point described in step 1 are the A-phase voltage U PCC-a , B-phase voltage U PCC-b and C-phase voltage U PCC-c ;

[0072] The wireless communication method collection described in step 1 can be collected through two wireless communication methods. The first wireless communication collection method is the A-phase voltage U collected by the fourth wireless communication module through the photovoltaic distributed power supply. PCC-a , B-phase voltage U PCC-b and C-phase voltage U PCC-c It is t...

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Abstract

The invention proposes a wireless network-based micro-grid coordination control system and method. The system of the present invention includes a coordination controller, a first wireless communication module, a second wireless communication module, a third wireless communication module, a fourth wireless communication module, a fifth wireless communication module circuit breaker, a transformer, a superconducting fault current limiter, a public Coupling points, superconducting magnetic energy storage devices, and photovoltaic distributed power sources. The method of the present invention collects the three-phase voltage of the public coupling point through wireless communication through the coordination controller, and performs Clarke transformation on the three-phase voltage of the public coupling point; The state of the microgrid; the coordination controller coordinates and controls the microgrid through wireless communication according to the state of the microgrid. Compared with the prior art, the invention can improve the transient performance of the microgrid under the short-circuit fault.

Description

technical field [0001] The invention belongs to the field of electric power system and automation, and in particular relates to a wireless network-based microgrid coordination control system and method. Background technique [0002] The micro-grid is composed of micro-power sources, loads, energy storage devices, etc., and the micro-power sources and energy storage devices are controlled by power electronic components. The system operates under a certain control strategy. The microgrid can be connected to the main grid through the Point of Common Coupling (PCC) and run in the grid-connected operation mode, or it can be cut off from the main grid to switch to the island operation mode. . As the microgrid penetration rate and switching power continue to increase, it is particularly important to ensure the stable operation of the microgrid and its transient performance under fault conditions. [0003] The application of superconducting power devices in power systems has attra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38H02J3/28H02J3/24
CPCH02J3/383H02J3/385H02J3/24H02J3/28H02J3/388Y02E10/56Y02E40/10Y02E40/60Y02E70/30
Inventor 陈磊李国城田昕
Owner WUHAN UNIV
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