Eureka AIR delivers breakthrough ideas for toughest innovation challenges, trusted by R&D personnel around the world.

Power distribution network load flow calculation method based on forward-backward sweep

A forward-backward generation and power flow calculation technology, applied in computing, electrical components, circuit devices, etc., can solve problems such as slow speed, difficulty in satisfying fast power flow calculation, and poor convergence

Active Publication Date: 2014-07-16
STATE GRID CORP OF CHINA +2
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

On the one hand, the distribution network has a huge number of tie switches and section switches, and distribution network automation demonstration projects have been fully rolled out in cities across the country. Network reconstruction is an important part of distribution automation. The switch state can reduce the network loss. Since the load changes in real time, it is required that the main station system can adapt to the load change and adjust the switch state in real time. Due to the large resistance-reactance ratio of the distribution network, the traditional power flow calculation method has poor convergence and speed It is difficult to meet the requirements of fast power flow calculation; on the other hand, distribution network online simulation technology is the core content of smart distribution network, and fast power flow calculation is the basis of online simulation

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
  • Power distribution network load flow calculation method based on forward-backward sweep
  • Power distribution network load flow calculation method based on forward-backward sweep
  • Power distribution network load flow calculation method based on forward-backward sweep

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0037] The present invention will be further described below in conjunction with the accompanying drawings. The following implementation examples are only used to illustrate the technical solutions of the present invention more clearly, but not to limit the protection scope of the present invention.

[0038] The power flow calculation method of the distribution network based on the forward push-back generation of the present invention can perform the power flow calculation of the radial network without forming a node admittance matrix and solving high-order equations. The calculation formula is simple and the convergence is fast, which is very practical. Such as figure 1 As shown, it specifically includes the following steps,

[0039] Step (1), through the distribution network topology undirected graph modeling method, the distribution network is simplified into an undirected graph, undirected graph, figure 2 For a simple distribution network, image 3 for figure 2 undi...

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 power distribution network load flow calculation method based on forward-backward sweep. The power distribution network load flow calculation method based on forward-backward sweep comprises the four steps of simplifying a power distribution network into an undirected graph, obtaining an impedance matrix and the undirected graph of the power distribution network to carry out deep search, obtaining a node access sequence of the power distribution network, and using the forward-backward sweep load flow of the power distribution network to work out the voltage of each node, the power of each branch and the loss power of the power distribution network. The power distribution network load flow calculation method based on forward-backward sweep does not need to form a node admittance matrix, does not need to solve a high-order equation set, is simple in calculation formula, is rapid in convergence, is quite practicable and has good application prospects.

Description

technical field [0001] The invention relates to a distribution network power flow calculation method based on forward-backward generation, and belongs to the technical field of distribution network analysis, operation and control. Background technique [0002] At present, there are a large number of primary and secondary equipment in the distribution network, the loss of distribution transformers and lines is serious, and the loss of the power system is mainly in the distribution network. , Operation control is of great significance. On the one hand, the distribution network has a huge number of tie switches and section switches, and distribution network automation demonstration projects have been fully rolled out in cities across the country. Network reconstruction is an important part of distribution automation. The switch state can reduce the network loss. Since the load changes in real time, it is required that the main station system can adapt to the load change and ad...

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): H02J3/00G06F19/00
Inventor 张剑袁晓冬
Owner STATE GRID CORP OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
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