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

Prediction method of transmission line icing growth based on atmospheric numerical model

A transmission line and numerical model technology, applied in the field of power transmission and distribution, can solve the problems of rough prediction results and low grid accuracy in short-term prediction of grid icing, and achieve the effects of improving deicing efficiency, reducing losses, and optimizing resource allocation.

Active Publication Date: 2017-03-01
STATE GRID CORP OF CHINA +2
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: Aiming at the present situation that the grid accuracy of short-term icing prediction of the current power grid is not high and the prediction results are too rough, a method of icing growth of transmission lines based on the atmospheric numerical model-WRF (Weather Research Forecast) is proposed. Prediction method, which can use the forecast results of the atmospheric numerical model to provide refined grid ice growth forecast

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
  • Prediction method of transmission line icing growth based on atmospheric numerical model
  • Prediction method of transmission line icing growth based on atmospheric numerical model
  • Prediction method of transmission line icing growth based on atmospheric numerical model

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0020] In the present invention, the process of outputting results from the WRF (the following steps 1-6) is carried out by using the existing flow. Taking Hunan as an example, the specific implementation steps of the prediction method of transmission line icing growth based on the atmospheric numerical model are as follows:

[0021] 1. WRF mesoscale weather forecast environment settings. Put the WRF assembly into a unified directory, and mark this directory as the WRF mesoscale weather forecast system directory. And configure the compilation environment, preprocessing environment, running environment and postprocessing environment of the program;

[0022] 2. Collect the terrain field data required by the WRF mesoscale weather forecast system. Collect the global topographic field data provided by NCEP, and add the topographic field data to the WRF mesoscale weather forecast system built in step (1);

[0023] 3. Selection of the optimal parameterization scheme for the model....

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 icing growth forecasting method based on an atmospheric numerical model. The power transmission line icing growth forecasting method comprises the steps of: utilizing WRF to obtain data including near-surface wind speed Vi and near-surface temperature Ti of a forecasting region, rainfall Ri within a forecasting time period, terrain height H and wind direction alpha of a power transmission line at each moment; and calculating to obtain icing increment delta Li of the line section at the corresponding moment according to a formula. By adopting the power transmission line icing growth forecasting method, the line icing growth trend can be forecasted accurately; the operability is high and data sources are rich; the forecasting accuracy is high, refined icing numerical forecasting can be made for different microtopographic regions, and resolution can be adjusted according to microtopographic size and microtopographic scope; and the power transmission line icing growth forecasting method can be used for instructing power transmission line operating personnel to perform power grid ice melting and removing operations accurately, ensuring safe and stable operation of the power grid, effectively increasing ice removing efficiency, optimizing resource allocation, and reducing the loss of the power transmission line caused by ice disaster of the power grid.

Description

technical field [0001] The invention belongs to the technical field of power transmission and distribution, and in particular relates to a method for predicting the growth of ice coating on power transmission lines. Background technique [0002] As an important part of a large and complex lifeline system, the safety of the power system directly affects the production and construction of the country and the people's living order. According to statistics, in addition to operating equipment failures and human error, most of the failures of the power system are caused by natural disasters. Among them, the ice disaster of the transmission line is one of the important disasters that threaten the safe operation of the power grid. Therefore, forecasting the growth of transmission line icing can realize the early response to grid icing, effectively reduce the occurrence of tower collapse accidents and tripping accidents, improve the ability of the grid to resist freezing rain and sn...

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 Patents(China)
IPC IPC(8): G06F19/00
CPCY02A90/10Y02E40/70Y04S10/50
Inventor 陆佳政张杰张红先方针李波徐勋建
Owner STATE GRID CORP OF CHINA
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