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

Distribution network small current neutral grounding line selection method based on multi-source information fusion

A technology of multi-source information fusion and small current grounding, applied in information technology support systems, measuring electricity, measuring electrical variables, etc., can solve the problems of decreased accuracy rate, lack of maintenance and lack of distribution network, etc., and achieve good adaptability

Active Publication Date: 2018-11-30
WEIHAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
View PDF5 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, regardless of the active method or the passive method, due to lack of maintenance and changes in the structure of the distribution network, the initial accuracy of the line selection device is relatively high, but as time goes by, the accuracy rate drops significantly

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
  • Distribution network small current neutral grounding line selection method based on multi-source information fusion
  • Distribution network small current neutral grounding line selection method based on multi-source information fusion
  • Distribution network small current neutral grounding line selection method based on multi-source information fusion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] The present invention is described in detail below:

[0050] (1) Firstly, establish the distribution network grounding line selection switch matrix DGSM to describe the feeder outlet switch model of all grounding substation related buses in the distribution network;

[0051] (2) Secondly, establish the feeder switch pulling circuit sequence table FSST to describe the opening action sequence of each feeder outlet switch on a bus;

[0052] (3) Then, establish a priority adjustment rule to make necessary adjustments to the switching sequence in the feeder switch pulling sequence list FSST;

[0053] (4) Finally, according to the distribution network grounding line selection switch array DGSM and the adjusted feeder switch pull sequence table FSST, the ground fault of the distribution network is comprehensively selected until the ground fault feeder is found.

[0054] Assume that the zero-sequence voltage of 10kV 1# bus, 2# bus, 3# bus and 4# bus in several substations has ...

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 distribution network small current neutral grounding line selection method based on multi-source information fusion. The distribution network small current neutral groundingline selection method comprises the steps that a distribution network grounding line selection switch matrix (DGSM) is established to describe feeder and outlet switch models of related buses of all grounding substations in the distribution network; a feeder switch pull path sequence table (FSST) is established to describe the brake separating action sequence of each feeder and outlet switch on the bus; priority adjustment rules are established to perform necessary adjustments on the switch sequence in the feeder switch pull path sequence table (FSST); and according to the distribution networkgrounding line selection switch matrix (DGSM) and the adjusted feeder switch pull path sequence table (FSST), the distribution network grounding fault is subjected to comprehensive line selection processing until a grounding fault feeder is found. The distribution network small current neutral grounding line selection method has good adaptability to a substation line selection device under the conditions of accurate and inaccurate of line selection.

Description

technical field [0001] The invention relates to the field of line selection for small current grounding faults in distribution networks, in particular to a method for line selection for small current grounding faults in distribution networks based on multi-source information fusion. Background technique [0002] Improving power supply reliability and power supply security are two important indicators to measure the power supply service quality of power companies. When a ground fault occurs, it is necessary not only to ensure the continuity of power supply, but also to determine the grounding line and grounding point as soon as possible, so as to quickly isolate the fault and ensure the safety of people and animals. [0003] In my country's medium-voltage distribution network, except for some A+ or A areas that require high power supply reliability, the neutral point is directly grounded or the neutral point is grounded through a small resistance. A small current grounding me...

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): G01R31/08
CPCG01R31/086G01R31/088Y04S10/52
Inventor 单喜斌麻亚鹏宋宗勋连晓华许晓康谷东昭刘帅张瀚王志英于卫卫李晓志丛玉頔于晓飞管清伟张国柱张伟
Owner WEIHAI POWER SUPPLY COMPANY OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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