Composite-electric-field-based superconducting insulation material aging evaluation device

Abstract

The invention discloses a composite-electric-field-based superconducting insulation material aging evaluation device, which is mainly composed of an experimental device, an electric branch observationdevice, a DC superimposed pulse voltage device and a terminal. A Matlab language data analysis platform is arranged in the terminal. The electric branch observation device observes and records samplechange data in the experimental device and transmits the data to the terminal; and then the Matlab language data analysis platform arranged in the terminal performs analysis and evaluation. Therefore, the aging evaluation of the superconducting insulation material under the composite electric field is realized; a problem of the electric tree branch aging of the insulating material due to continuous increasing of the transmission capacity of the power grid, continuous improvement of the voltage level and the complication of the external environment is solved; and the safe and stable operationof the power system is guaranteed effectively.

Description

technical field [0001] The invention belongs to the field of high-voltage equipment, in particular to a superconducting insulating material aging evaluation device based on a composite electric field. Background technique [0002] With the rapid development of the power industry and the expansion of the grid scale, the requirements for power transmission are getting higher and higher, and superconducting cables have become a hot direction for future development. High-temperature superconducting (HTS) cables, as the next-generation power transmission medium, are widely used in power transmission systems at home and abroad because of their almost non-resistance characteristics, high-capacity, low-loss transmission, and compact structure and easy laying. In practical applications, epoxy resin insulating materials are widely used in the accessories of high-temperature superconducting cables because of their excellent electrical and physical and chemical properties, and their per...

AI Technical Summary

Problems solved by technology

In short, with the continuous increase of the transmission capacity of the power grid, the continuous increase of the voltage level, and the more complex external environment, the aging problem of electrical branches of insulating materials is becoming more and more serious.

The resulting insulation breakdown seriously endangers the safe and stable operation of the power system.

[0003] For the operation process of high-temperature superconducting DC cables, they themselves are under a certain amplitude of DC voltage, but the pulse voltage introduced due to lightning strikes, commutation failures, and operating overvoltages will have adverse effects on the working environment and easily cause The aging and breakdown of electrical branches of cable insulation seriously threaten the safety and service life of cable insulation

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