Three-dimensional measuring device and method of charges on surface of basin-type insulator

Abstract

The invention belongs to the technical field of high-voltage equipment and electrostatic measuring, and discloses a three-dimensional measuring device and method of charges on the surface of a basin-type insulator. The device comprises an arc surface and inclined surface measuring probe, a probe support guide rail, a probe radial motion control mechanism, a link mechanism, a 360-degree rotation control disk, a reading mechanism, a lifting control lead screw, a control mechanism, a sealed through-connection cavity, a main shaft for controlling motion, a coupler and an operation platform base. The whole set of mechanisms is in sealed connection with a GIS testing cavity. The three-dimensional measuring device can realize three-dimensional control over charge measuring on the surface of the actual basin-type insulator; air impermeability of a testing device is guaranteed, therefore, the purpose that all-direction and totally-radial three-dimensional measuring is conducted on the charges on the surface of the basin-type insulator in voltage equipment or high-air-pressure environment is realized, and high charge resolution and spatial resolution is achieved in measuring the surfaces of various basin-type insulators. Meanwhile, the three-dimensional measuring device and method can be used for environments with high requirements for air impermeability and the measuring process can be observed.

Description

technical field [0001] The invention belongs to the technical field of high voltage and insulation measurement, in particular to a three-dimensional measurement device and method for the surface charge of a basin-type insulator. Background technique [0002] Gas-insulated combined electrical equipment (GIS) has the advantages of high insulation strength, low audible noise, no fire hazard, long maintenance cycle, saving floor space and less maintenance. It is gradually becoming a representative of modern substation equipment. It is low maintenance, even A symbol of maintenance-free, high reliability, and high safety. [0003] At present, most of the 330kV and 500kV substations built or newly built in our country use gas insulated switchgear. However, with the increase of the GIS voltage level and the increase of the number of systems put into operation, the internal faults of GIS equipment also increase. A large number of studies have shown that when a large amount of charg...

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Problems solved by technology

[0006] To sum up, for the insulating solid surface, the commonly used measurement method is the electrostatic capacitance probe method, but because the surface shape of the pot insulator is complex, and the inside of the GIS is generally filled with 4-5 atmospheres of SF6 gas, the electrostatic probe It is more complicated to measure the surface charge of pot insulators, so it is necessary to develop a device that can be used for measuring the surface charge of pot insulators in actual 252kVGIS according to the principle of measuring the surface charge of insulators by electrostatic capacitance method

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