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A test method for critical current characteristics of distribution lines covered with ice

A technology of ice-coated critical current and distribution lines, applied in the field of distribution network test, can solve the problems of misjudgment by emergency repair personnel, large difference, missing the best time for anti-freezing and thawing of distribution lines, etc., and achieves the effect of simple method

Active Publication Date: 2018-06-15
STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the critical current characteristics of distribution line icing are generally calculated by relevant empirical formulas, which are quite different from the actual situation, which often brings misjudgment to the emergency repair personnel, thus missing the best time for distribution line anti-freezing and thawing. It is impractical to grasp the critical current characteristics of distribution line icing through on-site measurement, so it is necessary to obtain the critical current characteristics of distribution line icing by simulating the field environment

Method used

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  • A test method for critical current characteristics of distribution lines covered with ice
  • A test method for critical current characteristics of distribution lines covered with ice
  • A test method for critical current characteristics of distribution lines covered with ice

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Embodiment Construction

[0016] The specific implementation of the present invention is carried out under artificial climate chamber simulation test environment, as figure 1 shown.

[0017] The test platform includes a voltage regulator, a step-up transformer, and test leads. The input end of the voltage regulator is connected to a 220-volt AC power supply; the output end of the voltage regulator is connected to the input end of the step-up transformer, and the output end of the step-up transformer is connected to the test lead through a cable. The artificial climate chamber can simulate the test environment. Rainfall facilities and fans are installed indoors to simulate the outdoor environment.

[0018] The specific implementation of the ice-covered critical current test of distribution lines is as follows:

[0019] (1) Determine the environmental meteorological parameters wind speed, rainfall and temperature, and use the artificial climate chamber to simulate the test environment.

[0020] (2) In...

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Abstract

The invention discloses a test method of icing critical current characteristics of a distribution line, for obtaining the icing critical current characteristics of the distribution line through simulating an onsite environment. According to the method, an artificial environment lab is employed for simulating the onsite environment, a high-current generator is placed in an artificial environment climate chamber, flows are rapidly raised to set currents, icing critical currents of a test lead wire under the conditions of given environment parameters and current values are observed, and finally, the icing critical current characteristics of the distribution line under the condition of different environment parameters and lead wire models are obtained. The method is simple, can quietly accurately obtain the icing critical current characteristics of the distribution line and has an important reference value for antifreeze ice-melting work of the distribution line.

Description

technical field [0001] The invention relates to a test method for the ice-covered critical current characteristics of distribution lines, belonging to the technical field of distribution network tests. Background technique [0002] There are a large number of distribution lines and they are widely distributed. Most of them are located in the micro-terrain, micro-climate and alpine mountainous areas with harsh environments. Once an icing accident occurs on the distribution line, it will seriously affect the people's normal production and domestic electricity consumption. By mastering the critical current characteristics of distribution line icing, the freezing disaster of distribution line can be effectively prevented, the anti-freezing and thawing scheme of distribution line can be formulated in time, and the damage to distribution line caused by freezing disaster can be reduced. [0003] At present, the critical current characteristics of distribution line icing are genera...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01R31/00G01R19/00H02G1/02
CPCG01R19/00G01R31/00H02G1/02
Inventor 安义朱远王华云谭艳军郑蜀江蔡木良潘建兵李博江刘蓓
Owner STATE GRID JIANGXI ELECTRIC POWER CO LTD RES INST
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