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

Excess current de-icing system for high voltage power transmission system

A power transmission system, overcurrent technology, applied in the installation of cables, electrical components, overhead installation, etc., can solve the problem of large heat loss

Inactive Publication Date: 2008-12-10
李杨扬
View PDF1 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This utility model patent uses over-current technology to realize the melting of ice cubes, but during the ice-melting process, all lines are in over-current phenomenon, resulting in a large heat loss

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
  • Excess current de-icing system for high voltage power transmission system
  • Excess current de-icing system for high voltage power transmission system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] As shown in FIG. 1 , in this embodiment, the high-voltage power transmission system has two split conductors in the same phase or pole.

[0023] This embodiment includes two split wires L of the same phase or same polarity 1 and L 2 , from the direction of power supply to the power consumer, in the area where ice is frequently encountered along the transmission line, split the line L at intervals (about 50 kilometers) 1 and L 2 A disconnection point is set on it, so the entire split wire will be divided into several sub-sections by multiple disconnection points on it. A switch device is connected in series at each disconnection point of the transmission conductor, each switch device comprises two switches, and each switch is respectively connected between two adjacent subsections of different split conductors at the same disconnection point; and Split wire L 1 and L 2 The disconnection points of the same subsection are connected together by connecting lines. Figur...

Embodiment 2

[0029] As shown in FIG. 2 , the structure and principle of this embodiment are basically the same as those of Embodiment 1, and the transmission wires of the high-voltage power transmission system have two split wires of the same phase or same polarity. The difference is that the connecting wire is set on the output terminal of the switch. When needed at break point a 2 and break point a 3 When the ice-melting treatment is performed between the split conductor sub-sections, a 2 -a 3 Segment Split Wire L 12 and L 22 Current switching is to pass through the switch T of the next switching device from the power supply direction to the power consumer. 13 , T 23 Come take control.

Embodiment 3

[0031] As shown in FIG. 3, the present embodiment has four split conductors in the same phase or polarity.

[0032] This embodiment is similar to Embodiment 1, the difference is that there are four split wires, correspondingly each switch device connected in series at each disconnection point of the power transmission wire has four switches, and each switch is connected in series in different split wires respectively. Between two adjacent subsections of the wire. And the input terminals of the four switches on each switch device are connected together through connecting wires.

[0033] The deicing principle of the present embodiment is as follows:

[0034] In an AC transmission system, the load current of each phase is designed to be 1500A, and a 4×400mm 2 The 4-split wires are used for power transmission, that is, the current of each wire is 375 amps. Through experiments, in a certain power transmission environment, the ice-melting current of the wire is 800 amps. When on...

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 provides a over-current ice-melting system for a high-voltage power transmitting system, comprising at least two power transmitting leads composed by the breaking leads, and two or more than two switch devices arranged on the power transmitting leads; each breaking lead is arranged with two or more than two breaking points; the breaking points divide the breaking leads into a plurality of segments; the switch device is arranged at the breaking point; each switch device comprises at least two switches; each switch is connected between two adjacent segments of different breaking leads; the invention also comprises two or more than two connecting lines; each connecting line connects the segment of the different breaking leads between the adjacent switch devices. A plurality of breaking points divide each breaking lead into many segments; each segmental breaking lead is series-connected with a switch for controlling the connection or the breaking of the segmental lead to fascinate to achieve the regional over-current ice-melt for the power transmitting lead.

Description

technical field [0001] The invention relates to an overcurrent ice-melting system applied to a same-phase or same-polarity split conductor running under load in a high-voltage power transmission system. Background technique [0002] In the high-voltage transmission system, the transmission lines are erected over long distances and pass through multiple meteorological regions. In severe cold and severe weather, frequent icing accidents on high-voltage transmission lines are prone to occur, resulting in interruption of power transmission and huge losses to enterprises and society. loss. [0003] Among the existing anti-icing and ice-melting solutions, there are over-current ice-melting technology, short-circuit ice-melting technology, heat-resistant alloy wire anti-icing and ice-melting technology, etc. In the anti-icing and ice-melting technology of heat-resistant alloy wires, the characteristics of the wires running at higher temperatures are used to melt the ice and preven...

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): H02G7/16
Inventor 李杨扬
Owner 李杨扬
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