Device and method for simulating uniform ion flow field for simulating environment test

Abstract

The invention discloses a device and method for performing simulation environment test by a simulation uniform ion flow field. The device comprises an electric charge module and a measurement module;the electric charge module comprises a first high voltage source, a second voltage source, a corona pin plate, an upper pole plate and a lower pole plate; the corona pin plate, the upper pole plate and the lower pole plate are arranged on the same vertical bracket at intervals from top to bottom, a simulation environment test space is formed between the upper pole plate and the lower pole plate; the corona pin plate is connected to the first high voltage source to provide uniform ion flow, and the upper pole plate is connected to the second high voltage source to provide a high voltage electric field; the upper pole plate is provided with a net structure, thereby enabling the passing and the distribution of the ion flow to be more uniform; the first high voltage source and / or the second voltage source can be adjusted so as to simulate a synthetic electric field of different ground field intensities and the combination of the uniform ion flow fields of different densities; the measurement module comprises a field mill, an electrometer and an oil flow plate. The technical scheme disclosed by the invention uses one-step molding corona pin plate, and is easy to maintain.

Description

technical field [0001] The invention relates to the fields of electric power simulation and testing, corona discharge, high-voltage technology, and dielectric charging characteristics research, in particular to a device and method for simulating a uniform ion flow field for simulating environment testing. Background technique [0002] The rapid economic development has led to a sharp increase in my country's demand for electric energy. However, the distribution of energy resources in our country is uneven, so we must implement the development strategy of power transmission from west to east. In terms of large-capacity long-distance transmission, the UHV DC transmission project has strong advantages. However, when the UHV DC transmission line is in operation, corona discharge will occur on the conductor, which will generate space charge, which will affect its surrounding environment. In order to understand the impact of the UHVDC transmission line on its surrounding environ...

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Problems solved by technology

[0004] The corona layer in the first type of scheme is composed of extremely thin corona wires, which have the following disadvantages in actual use: the assembly of the corona wires is relatively cumbersome; and the corona wires are easily bent during the assembly process, resulting in The partial discharge is too strong, resulting in uneven ion flow; after a period of use, the corona wire is prone to sag, resulting in uneven discharge

[0006] The second type of scheme has the following disadvantages: when conducting experiments on larger samples, the discharge of a single needle electrode is not uniform enough to provide a wide range of uniform ion flow field; when conducting experiments, charging and measurement are carried out separately, and the charging process of the sample cannot be monitored. Take real-time measurements

[0008] However, the two types of solutions in the above-mentioned prior art are not aimed at the device for measuring the surface charge of the medium when there is a medium between the upper and lower plates, and it is inconvenient to place and measure the medium sample.

That is, in the prior art, there is no simulation experiment platform for the charging characteristics of the dielectric thin film surface in a uniform ion flow field

Moreover, the existing simulation experiment platform is not suitable for the study of the surface charge characteristics of dielectric thin films in a uniform ion flow field.

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