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

Power distribution network energy efficiency evaluation system and evaluation method based on improved grey correlation degree

A grey correlation, distribution network technology, applied in the field of power system, can solve the problems of poor power grid security, poor operation economy, and extensive management.

Pending Publication Date: 2020-04-10
STATE GRID HEBEI ELECTRIC POWER RES INST +1
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, some regional power grids still have problems such as poor security, poor operation economy, uneven line loss management level, and extensive management. Line loss management is far from playing its important role

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 energy efficiency evaluation system and evaluation method based on improved grey correlation degree
  • Power distribution network energy efficiency evaluation system and evaluation method based on improved grey correlation degree
  • Power distribution network energy efficiency evaluation system and evaluation method based on improved grey correlation degree

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] Such as figure 1 As shown, a distribution network energy efficiency evaluation system based on improved gray relational degree, which includes energy efficiency level indicators, safety level indicators and energy-saving level indicators; the energy efficiency level indicators include power supply radius compliance rate, wire section compliance rate, average wire Energy efficiency and average distribution transformer energy efficiency; the safety level indicators include the average capacity of line access distribution transformer capacity, the proportion of line access distribution transformer capacity exceeding the standard, and the proportion of overdue service line length; the energy-saving level indicators include the proportion of new high-efficiency energy-saving lines Ratio and distributed power capacity ratio.

[0107] (1) Standard rate of power supply radius: In the same power supply area, if a certain voltage level exceeds its corresponding power supply radiu...

Embodiment 2

[0144] Such as figure 2 As shown, an evaluation system described in Embodiment 1 is used to evaluate the distribution network energy efficiency, and the distribution network energy efficiency evaluation index system is set. According to the calculation formula of each index and the collected original data, the value of each index is calculated to obtain the value to be evaluated The sample matrix is ​​formed by standardizing the index values, and the index system is weighted by using the expert weighting method. An improved gray correlation degree evaluation model is constructed and the samples to be evaluated are evaluated to obtain the results of the energy efficiency evaluation of the distribution network.

[0145] It specifically includes the following steps:

[0146] (1) Calculate the index values ​​in the evaluation system according to the collected raw data, and obtain the sample matrix to be evaluated

[0147] Collect the calculation data of distribution network indi...

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 power distribution network energy efficiency evaluation system based on an improved grey correlation degree. The system comprises an energy efficiency level index, a safetylevel index and an energy saving level index. The energy efficiency level indexes comprise a power supply radius standard reaching rate, a wire section standard reaching rate, average wire energy efficiency and average distribution transformer energy efficiency; the safety level indexes comprise line access distribution transformer capacity average capacity, line access distribution transformer capacity standard-exceeding proportion and overdue service line length proportion; the energy saving level indexes comprise a novel high-efficiency energy saving line proportion and a distributed powersupply capacity proportion. The invention also provides a method for evaluating the energy efficiency of the power distribution network by using the evaluation system. The method reflects the currentenergy efficiency situation of the power distribution network from the comprehensive perspective, and provides a feasible implementation scheme for the scientific evaluation and loss reduction decision of the energy efficiency of the power distribution network.

Description

technical field [0001] The invention belongs to the technical field of electric power systems, and relates to an energy efficiency evaluation system and an evaluation method of a distribution network based on an improved gray relational degree. Background technique [0002] The progress in research on loss reduction and energy saving of distribution networks at home and abroad is mainly reflected in research on loss reduction and energy saving technologies, research and development of loss reduction and energy saving equipment, and research on system loss reduction and energy saving programs. [0003] In terms of loss reduction technology research, domestic and foreign loss reduction technology measures can be divided into construction measures and operation measures. Construction measures refer to measures that require investment to improve the system structure, and operation measures refer to improvements that require no investment or less investment in daily operations. S...

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 Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/06
CPCG06Q10/04G06Q10/06393G06Q50/06Y02P90/82Y04S10/50Y02E40/70
Inventor 李晓军胡文平梁纪峰李晓明周文杨少波胡雪凯
Owner STATE GRID HEBEI ELECTRIC POWER RES INST
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