Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A Precise Dispatch Method Based on Distributed Power in Microgrid

A technology of distributed power supply and scheduling method, which is applied to electrical components, circuit devices, AC network circuits, etc., and can solve problems such as source-grid-load dynamic power imbalance.

Active Publication Date: 2020-02-11
NORTHEASTERN UNIV LIAONING
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem of source-network-load dynamic power unbalance caused by grid-connected distributed renewable power sources under the load environment and the shortcomings of existing methods, the purpose of the present invention is to propose a new method for precise control of distributed power sources in microgrids method

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 Precise Dispatch Method Based on Distributed Power in Microgrid
  • A Precise Dispatch Method Based on Distributed Power in Microgrid
  • A Precise Dispatch Method Based on Distributed Power in Microgrid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] Below in conjunction with this accompanying drawing, the specific embodiment of the present invention is described:

[0042] figure 1 It is a distributed system diagram with four distributed power sources. There are four DGs (distributed power sources) in the system, and each DG can be solar power generation, wind power generation, fuel cell or gas turbine, etc. Each DG has a controller, and the controller can communicate with adjacent nodes and can only communicate with adjacent nodes. exist figure 1 In the distributed system, there is no central controller, the status of each distributed power supply is equal, and there is no master-slave relationship.

[0043] Step 1: When the microgrid operates in Scenario 1, attach figure 1 As an example to illustrate:

[0044] Step 1-1: There is no distributed power source connected or exited in the system, the system is in a stable state, and the economic function F is constructed i (P i )=α i +β i P i +γ i P i 2 , wh...

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 present invention proposes a precise dispatch control method based on distributed power sources in microgrids. It embeds a peer-to-peer frequency control method in the traditional economic dispatch method so that the power balance conditions are satisfied when the output of distributed power sources fluctuates or the load fluctuates. Realize precise dispatch of distributed power sources in microgrids. In this control method, the active power and reactive power required by the load are balanced with the active power and reactive power generated by the generator; compared with the periodic economic dispatch method in the traditional centralized power system, this method can ensure micro The power grid achieves precise control of economic dispatch under different operating scenarios. At the same time, in this control method, different control methods can also be applied to meet special control needs. Moreover, the robust economic control method of the present invention can also keep the entire system operating under optimal economic conditions when communication failure occurs in the microgrid unit, thereby achieving precise control of the economic dispatch of the microgrid.

Description

technical field [0001] The invention belongs to the technical field of distributed dispatching of microgrid systems, and in particular relates to precise dispatching of distributed power sources in microgrids. Background technique [0002] Economic dispatch is one of the most important issues in the power system. Economic dispatch can ensure that the power system operates under the most economical conditions. The traditional economic dispatch method is mainly designed for the centralized power system. In the centralized power system, the central controller needs to calculate the power output reference value for each generator, and balance the demand power and output power in the system. Realize precise control of centralized power system dispatching. In recent years, due to the development of renewable energy, more and more distributed power sources have been installed in the power system, forming a microgrid. In the microgrid, due to the lack of a central controller and t...

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): H02J3/46H02J3/38
CPCH02J3/381H02J3/46
Inventor 闫士杰肖艳辉高文忠杨娇张坤
Owner NORTHEASTERN UNIV LIAONING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com