Unlock instant, AI-driven research and patent intelligence for your innovation.

Electric power circuit insulation fault early warning device

A technology for insulation faults and power lines, applied in fault locations, testing dielectric strength, etc., can solve problems such as inability to monitor the operation status of power lines online, failure to eliminate faults in the bud, and no more accurate guidance system to improve insulation. The effect of early warning level, high reliability and fast speed

Inactive Publication Date: 2015-01-21
PUYANG POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER +1
View PDF12 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is a lack of mature online monitoring and precise positioning technology for line insulation faults at home and abroad. For a long time, the power sector has waited until the line fails to power outage, find the fault point and deal with the fault point before restoring power supply. It is impossible to plan ahead and online monitoring The operation status of the power line cannot eliminate the fault in the bud; after the fault occurs, the fault point is often found by visual inspection along the line, and there has been no more accurate guidance system, which is time-consuming, laborious, and inefficient

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
  • Electric power circuit insulation fault early warning device
  • Electric power circuit insulation fault early warning device
  • Electric power circuit insulation fault early warning device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1: as figure 1 As shown, a power line insulation early warning device includes: a core-through traveling wave sensor, a traveling wave signal detection unit, a high-precision GPS synchronous clock unit, and a power line insulation failure early warning host.

[0019] The core-through traveling wave sensor is socketed on the grounding wire of the tower CVT (CVT is the abbreviation of capacitive voltage transformer, hereinafter referred to as CVT), which can effectively detect the traveling wave signal1 generated by minor faults2 such as flashover without distortion Transient traveling wave signal of ground transmission power system. Using the current traveling wave signal extracted by the CVT grounding wire, the current is converted into a voltage signal for fault location. It does not need a high-speed acquisition device and can be directly extracted by hardware. The structure is simple, the cost is low, and it is easy to operate.

[0020] The traveling wave...

Embodiment 2

[0034] Embodiment 2: as image 3 As shown, a power line insulation early warning device includes: a core-through traveling wave sensor, a traveling wave signal detection unit, a high-precision GPS synchronous clock unit, and a power line insulation failure early warning host.

[0035] Among them, the power line insulation fault early warning host includes: GPRS wireless communication module, precise positioning early warning module, storage module, microprocessor module, short message sending and receiving module.

[0036] As the control center of the power line insulation fault early warning host, the microprocessor module receives the traveling wave information provided by the GPRS wireless communication module for analysis and processing, uses the precise positioning early warning module to accurately locate the insulator position of partial discharge, and understands the electric power by accessing the storage module. The historical operation of the line, send early warnin...

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 an electric power circuit insulation fault early warning device. The electric power circuit insulation fault early warning device comprises a core-passing type traveling wave sensor, a traveling wave signal detection unit, a high-accuracy GPS synchronous clock unit and an electric power circuit insulation fault early warning host. The electric power circuit insulation fault early warning device is based on the accurate traveling wave positioning technology, the traveling wave positioning technology maturely applied to an electric transmission line is embedded into the insulation fault early warning device, and the insulation fault early warning accuracy is improved; faulted traveling waves belong to transient state jump signals, the frequency range ranges from 10 kHz to 2 MHz, the faulted traveling waves have the advantages of being high in speed, large in data amount and the like, and the abundant faulted information enables insulation fault early warning to be easily achieved; the core-passing type traveling wave sensor is high in detection sensitivity, small in positioning error and high insulation early warning reliability; the arrival time interval between the traveling wave signal amplitude and two homonymous traveling wave signals serves as an insulation early warning basis, accurate judgment on the insulation early warning degree can be achieved, and the electric power system insulation early warning level is improved.

Description

technical field [0001] The invention belongs to the technical field of electric power transmission network fault detection, in particular to a power line insulation fault early warning device. Background technique [0002] The structure of the power grid is complex, the transmission distance of high-voltage lines is long, and it may pass through mountains, dense forests or polluted areas. If it happens, it is easy to cause a power outage on the line. The main insulation control on the line is the insulator. The mechanical strength of the insulator must be able to fix and support the power line, and the electrical performance must enable sufficient insulation between the power lines and between the power lines and the earth. Generally, insulators operate outdoors, surrounded by strong electric fields, strong magnetic fields, and bad weather. It is easy to have internal gaps and surface damage of insulators, which will reduce the insulation between the wire and the tower. In ...

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): G01R31/12G01R31/08
Inventor 赵庆喜盛从兵李俊防邵震曾祥君喻锟蔡夏诗
Owner PUYANG POWER SUPPLY COMPANY STATE GRID HENAN ELECTRIC POWER