Method and device for testing dirt retention characteristics of high-voltage power transmission facility

Abstract

The invention discloses a device and a method for testing the dirt retention characteristics of a high-voltage power transmission facility. The device comprises a dirt retention characteristic test experiment box (1), an environment simulation module, a power transmission simulation module, a monitoring module and a connecting pipeline (14). The environment simulation module is connected with thedirt retention characteristic test experiment box (1) through a connecting pipeline (14) and is used for simulating an actual atmospheric environment. The power transmission simulation module is arranged in the dirt retention characteristic test experiment box (1) and is used for simulating actual operation of a power transmission line. The monitoring module is connected with the dirt retention characteristic test experiment box (1) and is used for monitoring environmental parameters and electrical parameters. Parameters such as aerosol concentration, temperature and humidity, gas flow velocity and gas flow direction in the system can be adjusted. By increasing the particle concentration of an aerosol generator to be a multiple of the aerosol concentration in the atmospheric environment quality, dirt retention of the power transmission facility can be accelerated, and the dirt retention characteristic of a high-voltage power transmission facility can be rapidly tested.

Description

technical field [0001] The invention belongs to the technical field of high-voltage power transmission and transformation and power systems, and relates to a method and a device for testing the pollution characteristics of high-voltage power transmission facilities. Background technique [0002] DC transmission has become an important part of my country's strong smart grid and UHV AC-DC grid construction, and is an extremely important energy transmission artery. However, due to the electrostatic effect of fixed polarity in DC transmission, the surface pollution of pole conductors, insulators and DC equipment is more serious than that of AC transmission. The surface of the transmission electrode wire continues to accumulate pollution, the surface roughness of the initiator wire increases, and the corona field strength becomes lower and lower, so the corona discharge becomes more and more intense. The corona discharge is enhanced, the space charge is increased, and the space ...

AI Technical Summary

Problems solved by technology

This method reflects the actual situation of the pollution on the surface of the equipment, but it cannot directly assess the amount of pollution on the surface of the equipment, and it is difficult to assess the speed of pollution.

Moreover, the period of natural pollution accumulation is long, and there are too many and uncontrollable environmental change factors during the evaluation period, it is difficult to identify the inducing factors of pollution accumulation, and it is impossible to selectively evaluate the influence of operational factors

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