Optical measurement device and method for separation of GIS (Gas Insulated Switchgear)

Abstract

The invention relates to a measurement device for separation of a GIS (Gas Insulated Switchgear), which comprises a laser source, a driving circuit for driving the laser source, an optical focusing device, a PSD (Position Sensitive Detector), a photoelectric adapter circuit and a data recording and processing device, wherein the laser source is arranged on a movably conducive tube of the insulated switchgear and capable of moving with the displacement of the conductive tube; the optical focusing device is arranged on the casing of the insulated switchgear and used for enabling the laser emitted from the laser source to converge; the PSD is used for converting light signals in a position corresponding to the laser subjected to the converging of the optical focusing device to current signals; the photoelectric adapter circuit is used for converting the current signals outputted from the PSD to voltage signals proportional to the displacement distance; and the data recording and processing device is used for recording the voltage signals and calculating the separation of the GIS according to the voltage signals. The invention indicates the displacement of a movable conductive contactthrough the laser emitted from the laser source, and shortens the displacement range of the laser on the PSD surface by using the optical focusing device, thereby facilitating the matching with the measurement range of the PSD, calculating the displacement of the movable conductive tube contact by measuring the laser position through the PSD, and achieving the measurement of the separation of theGIS.

Description

technical field [0001] The invention relates to the technical field of high voltage measurement, in particular to an optical measuring device and a measuring method for the opening distance of a GIS isolating switch. Background technique [0002] The conventional measurement method of the opening distance of the disconnector provided by the GIS manufacturer is the mechanical method. Due to the structure of the disconnector, the displacement sensor can only be connected to the contact through the operating mechanism or the transmission mechanism, which belongs to an indirect measurement method. Due to the non-rigid connection between the operating mechanism or the transmission mechanism and the disconnector contact, there are fit gaps, mechanical deformation and wear, etc., so the mechanical method can only roughly measure the opening distance, and the measurement error reaches 1-2mm, which cannot meet the requirements. Higher precision open distance measurement requirements...

AI Technical Summary

Problems solved by technology

Due to the non-rigid connection between the operating mechanism or the transmission mechanism and the contact of the isolating switch, there are fit gaps, mechanical deformation and wear, etc., so the mechanical method can only roughly measure the opening distance, and the measurement error reaches 1-2mm, which cannot meet the requirements. Requirements for Higher Accuracy Open Distance Measurement

Images