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

A medium-low pressure distribution network risk management and control method with scenery firewood storage

A low-voltage distribution network, wind-solar storage technology, applied in data processing applications, system integration technology, instruments, etc., can solve the problem of low operating efficiency of autonomous micro-grids

Inactive Publication Date: 2019-03-12
HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD +3
View PDF3 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention mainly solves the problem of low operating efficiency of the autonomous micro-grid in the prior art, and provides a method for risk management and control of a medium and low-voltage distribution network with wind-solar and firewood storage

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 medium-low pressure distribution network risk management and control method with scenery firewood storage
  • A medium-low pressure distribution network risk management and control method with scenery firewood storage
  • A medium-low pressure distribution network risk management and control method with scenery firewood storage

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0091] In this embodiment, a method for risk management and control of medium and low voltage distribution networks that includes wind, solar and firewood storage, such as image 3 shown, including the following steps:

[0092] S1. Sampling at time interval △t to obtain status information of system power supply DG, important load CL, unimportant load NL, and energy storage device S at the current moment t;

[0093] S2. Determine whether the difference between the total power generation capacity and the important load demand exceeds the division trigger threshold value, if it is to re-divide the qualified microgrid, if not, only increase or decrease the unimportant load; the specific process includes:

[0094] Judging that under the structure system determined in the previous sampling period, in each autonomous microgrid (DG-CL) i Whether the change ratio of exceeds the set division threshold θ, that is,

[0095]

[0096] If so, enter step S3, if not, enter step S406 in st...

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 relates to a medium-low pressure distribution network risk management and control method containing scenery firewood storage. As that power supply of the renewable power supply is volatile, randomness and intermittency, the power match between the power output and the electric load, The efficient use of distributed generation (DG) output power and the continuous and safe power supplyof critical loads (CL) become more complex and challenging, A 'stem and leaf generation strategy' is proposed to realize the optimal dispatching of power among multiple autonomous micro-grids, so asto realize the full utilization of DG power and the maximum power supply of important loads by means of energy storage equipment. This strategy constructs micro-grid topology matrix by generating matrix weights reasonably. An improved minimum spanning tree (MST) algorithm is used to determine the optimal DG-CL and S-CL power supply correspondence relation, obtains 'tree trunk'; The non-important load (NL) is selected by linear matrix inequality (LMI) algorithm and added to the trunk in the form of 'leaves' to form a new autonomous micromesh structure.

Description

technical field [0001] The invention relates to the field of distributed power generation and energy storage equipment of a micro-grid system, in particular to a method for risk management and control of a medium and low-voltage distribution network including wind, light, storage, and diesel power sources including wind and solar energy storage. Background technique [0002] With the maturity of the micro-grid system, this kind of power network system that can operate independently or grid-connected has adopted more renewable energy technologies. However, although there are relatively stable and reliable power supply systems such as internal combustion generators and gas turbine generators among the currently commonly used distributed power sources, their scale and power supply will be limited to a certain extent because they need to consume traditional energy for power supply. To meet the electricity requirements of all electricity loads in the micro-grid, and solar and win...

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
IPC IPC(8): G06Q10/06G06Q50/06
CPCG06Q10/0635G06Q50/06Y02E40/70Y04S10/50
Inventor 吴宇红纪涛周健赖旬阳李洋杨强薄耀龙郑军
Owner HUZHOU ELECTRIC POWER SUPPLY CO OF STATE GRID ZHEJIANG ELECTRIC POWER CO LTD
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