Testing platform for simulating vegetation combustion particle charges in electric field of power transmission line

Abstract

The invention belongs to the field of power transmission line prevention technology, and discloses a testing platform for simulating vegetation combustion particle charges in an electric field of a power transmission line. The testing platform for simulating the vegetation combustion particle charges in the electric field of the power transmission line comprises a vegetation combustion system, a simulated power transmission line voltage generating system, a particle collecting system, a charge measuring system, a mass measuring system, a signal acquisition system and a control platform. The platform of the invention can effectively simulate the vegetation combustion condition below the power transmission line, and furthermore performs vegetation combustion in a quantitative weighing mode,thereby ensuring test repeatability. The testing platform can perform real-time measurement on the particle charges at different positions for obtaining multilayer multidimensional measurement data, thereby facilitating analysis and researching for the particle charge process and particle charge amount of mountain fire particles below the power transmission line.

Description

technical field [0001] The invention belongs to the technical field of protection against transmission lines, and in particular relates to a test platform for simulating the charging of vegetation burning particles under the electric field of transmission lines. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: [0003] With the rapid development of the power grid, the corridors of transmission lines are increasingly tense, and transmission channels inevitably pass through areas with high forest fire risk with lush vegetation. Wildfires may cause tripping accidents due to the decrease of phase-to-phase and phase-to-phase insulation strength of transmission lines. Nowadays, transmission lines inevitably pass through areas with high forest fire risk with lush vegetation, and wildfires may cause phase-to-phase and phase-to-phase short circuits of transmission lines, resulting in tripping accidents. The current exp...

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Problems solved by technology

[0006] (1) In the prior art, for the charging of soot particles from hydrocarbon combustion and industrial dust charging in the prior art, most of them are deposition tests. It is difficult to judge the polarity of particle charging by the amount of deposition on different polar plates. quantitative analysis

The dust charging device tests the charging capacity by measuring the charge-to-mass ratio of sand and dust, but the charging of sand and dust is much simpler than the charging of particles generated by the burning of vegetation below the transmission line, and it is not suitable for this situation. Measurement of particle charge

Its test platform cannot be used to conduct experiments on the charging of vegetation flame particles

The charging process of vegetation burning particles under the transmission line cannot be simulated, and the charge and mass of the particles cannot be measured, resulting in the inability to obtain the charge-to-mass ratio of particles with different particle sizes

[0007] (2) Existing test and research platforms for simulating the gap discharge of transmission lines caused by wildfires mostly study the discharge voltage and leakage current of the gap, but lack the measurement device for particle charge

Most of the research on particle charging is only through simulation and lacks experimental verification

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