Climate environment simulation test method

Abstract

The invention relates to a climate environment simulation test method which comprises the following operation that: an environment simulation cabin is arranged; a sample fed with ultrahigh-voltage power is arranged in the environment simulation cabin; a thermal fog system, a rain spray system, an ice covering system, a wind creating system and an ice melting system are arranged around the sample, and a temperature control system, a pressure regulation system, a test control system and a water source are arranged outside the environment simulation cabin; when the thermal fog environment is simulated, the thermal fog system is controlled to input the rate of steam into the environment simulation cabin; when the rain spraying environment is simulated, the angle that rain drops collide with the surface of the sample is 45 degrees; when the ice covering environment is simulated, the temperature in the environment simulation cabin is controlled, so that water drops are attached on the surface of the sample; when wind environment is simulated, the wind speed of the wind creating system is controlled; and the ice melting environment is simulated, the temperature rise rate near the sample is controlled. The climate environment simulation test method is easy to simulate various climate environments, can be applied in the test research and the product performance test of electric power, traffic, aviation and other fields, and the like.

Description

technical field [0001] The invention relates to a test method, in particular to a climate environment simulation test method. Background technique [0002] In recent years, with the increasing domestic power demand, UHV power transmission has become an important means to improve the transmission capacity of my country's power grid. Since the insulator strings in UHV lines are exposed to the outdoors, a contamination layer composed of soluble salts and insoluble ash will be deposited on the surface, and there is high voltage at both ends of the insulator strings. The performance is degraded, especially in foggy, rainy or freezing days, there may also be a large leakage current on the surface of the insulator string, which is often referred to as flickering. More seriously, the flickering phenomenon on the surface of the insulator string may cause phase-to-phase short circuit or phase-to-ground short circuit, resulting in major safety accidents such as large-scale power outag...

AI Technical Summary

Problems solved by technology

However, at present, the environmental simulation test equipment at home and abroad is mainly designed for a single meteorological condition, and there is no large-scale high-altitude simulation laboratory at home and abroad, and the impact of high altitude on flashover characteristics is relatively small. and ice flash effects can only be done in a small climate chamber for some short series of experiments or mechanistic studies

Although there are some comprehensive environmental simulation test devices at home and abroad, these devices are not comprehensive enough to simulate complex meteorological environments

For example, a multi-functional artificial climate chamber system disclosed in the prior art can artificially simulate meteorological environments such as fogging and icing, but it lacks an independent ice-melting system and a simulated high-altitude system, and its ice-melting process only depends on the laboratory The temperature control system is used to achieve ice melting, which not only consumes a lot of energy and costs, but also makes it difficult to control the speed of ice melting

In addition, the artificial climate tanks currently developed in China for electrical tests are small in size, which cannot meet the requirements for research on the flashover characteristics of EHV, UHV insulators and large insulator strings.

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