On-line decision making method for load current de-icing of transmission line

A technology for transmission lines and load currents, applied in the installation of circuit devices, electrical components, cables, etc., to achieve great social and economic benefits, reduce safety risks, and reduce labor intensity.

Inactive Publication Date: 2010-07-21
国网湖南省电力有限公司信息通信分公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an online decision-making method for load current melting of power transmission lines for dispatchers who cannot quickly and accurately decide whether to use load current to melt ice in real time, so as to automatically search online to meet the load The operation mode required by the current melting ice, and online analysis in this operation mode, whether there is a safety and stability problem in the power grid, so as to draw the conclusion whether the load current can be used to melt ice

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Data collection:

[0025] A. Record the real-time load current value of the current transmission line from the energy management system;

[0026] B. Record the current ice thickness, transmission line model, resistance value, reactance value and other parameters from the ice melting scheme management system;

[0027] C. Record the maintenance status of power grid equipment from the maintenance management system.

[0028] 2. Calculate:

[0029] A. Use the relevant transmission line parameters and weather information parameters recorded in step 1 to calculate the safe current value and maximum allowable current value of different types of transmission lines with conventional calculation methods, and display them in a conventional graphic display mode;

[0030] B. Utilize the relevant real-time weather information data recorded in step 1 and the actual ice thickness of the transmission line to calculate the ice-melting current value of the transmission line in a conve...

Embodiment 2

[0040] Step 1 is the same as in Example 1.

[0041] 2. Calculation, that is, calculate the safe current value, maximum allowable current value, ice-melting current value and the actual ice thickness of the line by conventional calculation methods:

[0042] A. Use the relevant transmission line parameters and weather information parameters recorded in step 1 to calculate the safe current value and maximum allowable current value of different types of transmission lines with conventional calculation methods, and display them in a conventional form;

[0043]B. Use the relevant real-time weather information data recorded in step 1 and the actual ice thickness of the transmission line to calculate the ice-melting current value of the transmission line in a conventional calculation method, and display it in a conventional form;

[0044] Steps 3, 4, and 5 are the same as in Example 1.

[0045]

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PUM

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Abstract

The invention introduces an on-line decision making method for load current de-icing of a transmission line. The method comprises the following steps: 1, acquiring data; 2, calculating; 3 calculating power flow; 4, calculating stability; 5, performing on-line decision making; simultaneously, calculating time required for de-icing the transmission line which can adopt load current de-icing; and displaying the information in a mode of conventional graphic or table. On the premise of ensuring that an electric network operates safely and stably, the method can give full play to the advantages of load current de-icing, reduce the labor intensity of dispatchers, automatically and make the decision on line that whether the load current de-icing can be used, reduce the safety risk to the electric network brought by the load current de-icing, and can generate great social benefit and economic benefit.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and in particular relates to a method for online decision-making on whether a transmission line of a power system can use load current to melt ice. Background technique [0002] Since the formation of the power grid, it has suffered from freezing disasters almost every year. Severe icing has caused transmission lines to break and towers to fall, which has affected the reliability of power companies' power supply to users. Therefore, freezing disasters have become one of the most serious natural disasters that threaten the safe operation of power grids, but known ice-melting technologies generally have certain limitations. Therefore, it is necessary to conduct further research in order to provide a more general Strong load current ice melting technology. However, the use of load current to melt ice must first make the load current reach the size of the line ice melting current, oth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/16H02J13/00G06Q50/00G06Q50/06
CPCY04S10/54
Inventor 曹志煌陈辉华张文磊刘永刚黄良刚钟伟宋军英施浩波潘力强
Owner 国网湖南省电力有限公司信息通信分公司
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