Power transmission line wind-deviation fault intelligent identification method

An identification method and transmission line technology, applied in the direction of measuring electricity, measuring electrical variables, measuring devices, etc., to achieve the effect of clear physical concepts and clear judgment ideas

Inactive Publication Date: 2014-05-07
海南电力技术研究院 +1
View PDF9 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, strong winds are always accompanied by thunderstorms. This kind of severe weather is also a time of high incidence of rain flashes, wind swaying, and vegetation flashover. Lightning near the line corridor is superimposed on the power frequency voltage, which is more likely to cause these faults.
At present, the research on wind deflection fault tripping of transmission lines often focuses on the wind deflection angle

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 transmission line wind-deviation fault intelligent identification method
  • Power transmission line wind-deviation fault intelligent identification method
  • Power transmission line wind-deviation fault intelligent identification method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] see figure 1 , figure 1 It is a step-by-step flowchart of an identification method for a lightning strike transmission line lightning protection line and a pole tower according to the present invention.

[0015] Described measuring method comprises the following steps:

[0016] Step S101, acquiring online monitoring data of transmission line current.

[0017] In this step, an online current monitoring device is installed on the phase conductors of the three phases A, B, and C of the transmission line. On the one hand, the device can record the traveling wave current propagating on the transmission line and its GPS time stamp when the electromagnetic disturbance occurs in the power system On the other hand, when the transmission line fails and trips, the device can record the power frequency fault current and its GPS time stamp.

[0018] Step S102, extracting the traveling wave current data at the fault time.

[0019] Preferably, the traveling wave current data with ...

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 power transmission line wind-deviation fault intelligent identification method. A fractal theory is utilized to perform fault time traveling wave current waveform similarity comparison so that power transmission line wind-deviation fault intelligent identification is realized. The method comprises the following steps: power transmission line current online monitoring data are acquired, and fault time traveling wave current data are extracted; fractal dimension of the traveling wave current data at each fault time is calculated; and the fractal dimension is analyzed and an identification result is outputted. Compared with methods in the prior art, the method is intelligible in physical concept and clear in judgment thinking so that whether a traveling wave current signal is a signal of a lightning stroke power transmission line lightning wire and a tower pole can be effectively identified.

Description

technical field [0001] The invention relates to the field of intelligent power systems, in particular to an intelligent identification method for wind deflection faults of power transmission lines. Background technique [0002] Overhead transmission lines have been operating in the wild for a long time, and are greatly affected by natural climate changes. Wind deflection flashover accidents are a major safety hazard affecting the normal operation of Hainan Power Grid, and it is not easy to reclose the line after tripping due to wind deflection flashover, which seriously affects the Safe and stable operation of the power system. Thus causing significant economic losses. [0003] Disastrous meteorological conditions are important external conditions for line tripping. In particular, the wind speed at the typhoon center is generally around level 10-12, which can break big trees by the middle and uproot small trees, causing serious damage wherever it goes. The cause of partia...

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): G01R31/02
Inventor 黄松邢铀陈钦柱姚冬钱冠军余刚华张国清
Owner 海南电力技术研究院
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
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap