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Icing observational method for electric transmission line under meteorological condition of natural icing

A technology of transmission lines and weather conditions, applied in the field of electrical engineering

Inactive Publication Date: 2015-06-10
STATE GRID CORP OF CHINA +2
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AI Technical Summary

Problems solved by technology

At present, the icing growth test for transmission lines is still in the initial stage, and there is no systematic field icing observation method for transmission lines to guide the experimental research

Method used

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Embodiment Construction

[0020] The present invention will be further described by a specific embodiment below. The icing observation method under the natural icing meteorological condition of the transmission line of the present invention comprises the following steps:

[0021] (1) Determine the test area, choose Xiaoshajiang Town, Longhui County, Shaoyang City, Hunan Province, which has micro-meteorological and micro-topographic characteristics, as the test site. The specific test site is selected on the top of the mountain at an altitude of 1385m about 2km east and north of Xiaoshajiang Town. There are 60 days of freezing days all year round, and it has unique conditions for ice-covered observation and research.

[0022] (2) Install an ice viewing shelf (2m high) at the test site, and place a 2-meter-long simulated wire on the ice viewing shelf at different heights (every 0.5m) and in different directions;

[0023] (3) Install temperature and humidity sensors, wind speed sensors, and rainfall gaug...

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Abstract

The invention relates to an icing observational method for an electric transmission line under the meteorological condition of natural icing, and in the microtopography and microclimate areas under long time freezing rain climatic condition, a simulate electric transmission line field icing observational method is used for guiding and conducting an icing test of the simulate electric transmission line under natural conditions. The method comprises the steps of collecting observational data in multiple aspects such as temperature, humidity, wind speed, wind direction, rainfall, snowfall, icing forms and height from the ground before and after operation, researching the relations between the temperature, humidity, wind speed, wind direction, rainfall, snowfall, icing forms, height from the ground and the like and the icing growing of wires and insulators of the simulate electric transmission line under the natural conditions, and providing technical evaluation according to the effects of icing growing of the simulate electric transmission line under the natural conditions by each meteorological element. The method is simple and easy to operate, and the method can provide guidance for the icing test of wires under field and natural conditions and provide technical support for forecasting, early warning and ice melting decision of icing on a power grid.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and in particular relates to an ice observation method for simulating transmission lines in the field under natural conditions. Background technique [0002] Icing disaster is a disaster that seriously threatens the safe operation of the power grid. The ice disaster in the southern region in 2008 caused a large number of transmission lines to collapse and break down, power transmission was interrupted, and the direct economic loss was billions of yuan, which seriously affected the safety of the power grid. run and the normal life of the masses. [0003] The main reason for the downfall and disconnection of power grid transmission lines is that the serious icing of transmission lines leads to the increase of the tensile stress on the towers and conductors beyond their bearing capacity. very important. At present, the icing growth test for transmission lines is still in the initial...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01D21/02
Inventor 蒋正龙陆佳政赵纯李波胡建平张红先吴伟方针
Owner STATE GRID CORP OF CHINA
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