Capacitance and dielectric loss measurement system and method of electrically insulating material

Abstract

The present invention discloses a fully-automatic anti-interference portable measuring system. The system is used for measuring the capacitance, relative dielectric constant and dielectric loss factor of the electrically insulating material under a vacuum condition. The system includes an automatic dielectric loss meter, a vacuum gauge , a three-terminal type test electrode, a dust cover, a lifting motor and a display; the automatic dielectric loss meter is used for measuring the capacitance, relative dielectric constant and dielectric loss parameter of an electrically insulating material test sheet to be measured; the vacuum gauge is used for determining a vacuum parameter in the dust cover; the three-terminal type test electrode is used for applying test voltage and lead-out current to the electrically insulating material test sheet to be measured; the dust cover is used for isolating the electrically insulating material test sheet to be measured from external environment; the lifting motor is used for applying specified pressure to the electrically insulating material test sheet to be measured; and the display is used for displaying the capacitance, relative dielectric constant and dielectric loss parameter of the electrically insulating material test sheet to be measured.

Description

technical field [0001] The invention relates to the field of research and testing of insulating materials, and more particularly relates to a measurement system and method for capacitance and dielectric loss of electrical insulating materials. Background technique [0002] With the continuous development of the State Grid Corporation, the level of power transmission and transformation is getting higher and higher, from the early 500kV to the current 1000kV, so higher requirements are placed on the performance of many insulating materials. The dielectric constant and dielectric loss in the electrical performance indicators of solid insulating materials are two very important technical indicators. At present, most of the measuring devices are relatively simple, so the discreteness of the measurement data is relatively large (causing an error of about 10 times), so that accurate data cannot be obtained through experiments. Through a large number of experiments, we found that t...

AI Technical Summary

Problems solved by technology

At present, most of the measuring devices are relatively simple, so the discreteness of the measurement data is relatively large (causing an error of about 10 times), so that it is impossible to obtain accurate data through experiments.

Through a large number of experiments, we found that the reasons for the large dispersion of data mainly come from environmental factors and human errors introduced by operators.

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