Multi-parameter ultra-high frequency sensor performance comprehensive evaluation method

Abstract

The invention provides a multi-parameter ultra-high frequency sensor performance comprehensive evaluation method. The method comprises steps: a GTEM cell is adopted to carry out equivalent height test and sensitivity test on a to-be-tested ultra-high frequency sensor; a network analyzer is adopted to carry out standing-wave ratio test on the to-be-tested ultra-high frequency sensor; and a GIS (Gas Insulated Switchgear) is adopted as a test model to carry out fault model signal-to-noise ratio test on the to-be-tested ultra-high frequency sensor. Compared with the prior art, the multi-parameter ultra-high frequency sensor performance comprehensive evaluation method provided by the invention comprehensively evaluates the performance of the ultra-high frequency sensor from four aspects of the equivalent height, the standing-wave ratio, the sensitivity and the fault model signal-to-noise ratio.

Description

technical field [0001] The invention relates to the technical field of power transmission and transformation equipment, in particular to a method for comprehensively evaluating the performance of a multi-parameter ultra-high frequency sensor. Background technique [0002] In partial discharge measurement, UHF partial discharge detection, as an emerging partial discharge detection method, has been widely used in various equipment, especially GIS equipment. The 1000kV GIS (HybridGas Insulated Switchgear), HGIS) all installed UHF partial discharge on-line monitoring system. Its advantage is that it is based on the principle of wireless electromagnetic radiation reception, has high sensitivity, and does not affect the normal operation of the equipment. [0003] At present, there are some characteristic parameters to evaluate UHF sensors for partial discharge detection, such as equivalent height measurement, partial discharge detection effectiveness verification, etc., but the c...

AI Technical Summary

Problems solved by technology

However, in addition to the model difference, the discharge itself is random, so it is difficult to reproduce the test results with a high degree of consistency. For the equivalent height test, although it makes up for the problem that the test results are difficult to reproduce, the laboratory condition test environment is difficult to be completely equivalent In complex on-site environments, it is not appropriate to rely solely on the equivalent height

Images