Unlock instant, AI-driven research and patent intelligence for your innovation.

A microgrid control method and system

A control method and micro-grid technology, applied in wind power generation, photovoltaic power generation, electrical components, etc., can solve problems such as reducing the service life of equipment, affecting system stability, and increasing the difficulty of controlling micro-grid systems with multiple distributed power sources, achieving The effect of stable power balance and stable voltage

Active Publication Date: 2020-06-26
中科智寰(北京)科技有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) Distributed power supply is greatly affected by environmental factors, and its working mode will switch frequently, showing complex and mixed characteristics;
[0005] 2) In order to meet the load demand and improve the quality of power supply, units such as energy storage equipment and continuous power supply also need to switch their working modes frequently, which makes the hybrid characteristics of the system more complicated;
[0007] 4) When performing multi-mode switching, the number of switching times will have a certain impact on system stability
If each unit has carried out a large number of working mode switching, it will not only reduce the service life of the equipment, but also make the control command complicated;
[0008] It can be seen that due to the complex operation status of renewable energy, the access of various distributed power sources greatly increases the difficulty of controlling the microgrid system.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A microgrid control method and system
  • A microgrid control method and system
  • A microgrid control method and system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0060] Embodiment 1 of the present invention provides a microgrid control method, such as figure 1 As shown, based on a multi-agent system including a main controller and a plurality of sub-controllers, a plurality of sub-controllers are connected to a plurality of working units in the microgrid system in a one-to-one correspondence, and the sub-controllers are also connected to the The main controller is connected, and the control method includes the following steps: step 101, obtain the status information of each working unit and the stability information of the bus node through a plurality of the sub-controllers; step 102, through the main controller according to the The state information and the stability information adopt a decision tree algorithm to formulate a control strategy; step 103, the sub-controllers perform decentralized and coordinated control on the working units according to the control strategy.

[0061] like Figure 2-3 As shown, the control method of the ...

Embodiment 2

[0063] Embodiment 2 of the present invention provides a preferred implementation of a microgrid control method.

[0064] In step 101, the state information of each working unit is obtained through multiple sub-controllers, specifically including:

[0065] Establish a hybrid automaton model representing the state information of the work unit, as shown in the following formula:

[0066] h 1 =(D, L, f, S, F, Init); where, D={δ 1 ,δ 2 ,δ 3 ,...}, represents the discrete state space set of the work unit; L represents the continuous state space set of the work unit; f=(f 1 (δ 1 ), f 2 (δ 2 ), f 3 (δ 3 ),…) represent the change law of continuous state space under discrete state space; S=(S 1 , S 2 , S 3 ...) represents the mapping between discrete state space and continuous state space; F=(F 1 , F 2 , F 3 ...) represents the condition of state space transition; for the discrete state space of the working unit of a hybrid automaton model, when a certain discrete state s...

Embodiment 3

[0176] Embodiment 3 of the present invention provides a microgrid control system.

[0177] like Figure 7 The microgrid control system shown is a multi-agent system including a main controller 701 and multiple sub-controllers 702;

[0178] Multiple sub-controllers 702 are connected to multiple working units in the microgrid system in one-to-one correspondence;

[0179] The sub-controller 702 is also connected to the main controller 701, and a plurality of the sub-controllers are used to obtain the status information of each working unit and the stability information of the bus node, and store the status information and the stability information sent to the master controller;

[0180] The main controller 701 is configured to adopt a decision tree algorithm to formulate a control strategy according to the state information and the stability information, and send the control strategy to the sub-controller;

[0181] The sub-controller 702 is also used for performing decentraliz...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a microgrid control method and system. The control method is applied to the microgrid control system. The microgrid control system is a multi-agent system comprising a master controller and multiple secondary controllers. The control method comprises steps that secondary controllers acquire state information of each working unit and stability information of a bus node; themaster controller makes a control policy by using a decision tree algorithm according to the state information and stability information; and the secondary controllers perform decentralized coordinated control on working units according to the control policy. In the method based on the multi-agent system, the master controller makes the control policy by using the decision tree algorithm, and thesecondary controllers perform decentralized coordinated control on working units according to the control policy made by the master controller, therefore, power balancing and voltage stabilization ofthe microgrid system are guaranteed, and the microgrid system in an island running state works safely and stably.

Description

technical field [0001] The invention relates to the field of microgrid control, in particular to a microgrid control method and system. Background technique [0002] With the development of distributed technology, the power generation of distributed power sources is increasing day by day, and many new and renewable energy sources are beginning to be connected to the grid, thus forming a micro-grid system. [0003] A microgrid system with multiple distributed power sources has the following characteristics: [0004] 1) Distributed power supply is greatly affected by environmental factors, and its working mode will switch frequently, showing complex and mixed characteristics; [0005] 2) In order to meet the load demand and improve the quality of power supply, units such as energy storage equipment and continuous power supply also need to switch their working modes frequently, which makes the hybrid characteristics of the system more complicated; [0006] 3) In order to cope...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H02J3/38
CPCH02J3/383H02J3/386H02J3/387H02J3/388H02J2203/20Y02E10/56Y02E10/76
Inventor 窦春霞滕升起张博岳东
Owner 中科智寰(北京)科技有限公司