A negative pressure simulation test analysis platform with controllable environmental conditions

Abstract

The invention discloses a negative pressure simulation test and analysis platform with controllable environmental conditions. The system comprises a simulation device used for simulating different environmental conditions and a test and analysis device used for monitoring a tested conductor sample under different simulation environments, wherein the simulation device includes a combustion chamber,a negative pressure deposition chamber and a control assembly; and the test and analysis device includes an environmental parameter measuring device, a monitoring device and a data analysis platform.By implementing the scheme disclosed by the invention, the simulation environment can be controlled, the wire surface morphology, electric dust removal and corona discharge under different simulationconditions are detected and analyzed.

Description

technical field [0001] The invention relates to the technical field of power transmission, in particular to a negative pressure simulation test and analysis platform with controllable environmental conditions. Background technique [0002] In recent years, air pollution has become more and more serious, and transmission lines are directly affected by the atmospheric environment during long-term operation. When the high-voltage transmission line is exposed to the atmospheric environment with airborne particles for a long time, the particles will adhere to the surface of the wire to form pollution, change the surface characteristics of the wire, and then affect the corona characteristics of the wire, making the electromagnetic environment of the transmission line more complicated. [0003] With the aggravation of the harshness of the environment, the pollution particles in the environment adhere to the surface of the wire, which leads to problems such as a decrease in the coro...

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Problems solved by technology

[0009] Particles are generated by combustion or atomizers, and are sprayed into larger closed containers through pipes for related tests; however, in order to meet the electrical insulation design of this type of solution, the container volume is large, which may easily lead to the particle concentration and uniformity in the container It is difficult to control and adjust, and due to the need to quantitatively analyze the uniform distribution of particles through this device, the concentration of particles will affect the corona discharge characteristics of the wire (mainly including corona inception voltage, synthetic electric field, ion current density and corona current), so If the uniformity and quantitative adjustment of the concentration of the particles in the container cannot be well controlled, it will be difficult to carry out subsequent quantitative analysis

[0010] In addition, the inventors of the present application have also found that there is a problem in both the first type and the second type of solutions: the free charges generated by the discharge will accumulate on the walls of the closed container, which will cause errors in the test of the corona discharge effect. Here The error is mainly due to the fact that the charges accumulated on the four walls will generate an electric field, which will interfere with the original electric field distribution in the container and cause errors in the measurement of corona characteristics.

[0012] A jet mill was used as the particle generation device, followed by diffusion into a larger climate chamber for testing; however, such schemes use a jet mill and a larger climate chamber, both of which are too bulky for experimental equipment. It is not conducive to the convenience of experiment and test deployment, and it is not portable, and because the price of the jet mill is basically more than 10,000 yuan, its use cost is also relatively expensive

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