System and method for simulation test of contact state of isolating switch contact in GIS

Abstract

The invention discloses a system and a method for a simulation test of a contact state of an isolating switch contact in GIS (Geographic Information System). The system comprises a shell, wherein an upper insulating cover plate and a lower insulating cover plate are respectively arranged at upper and lower ends of the shell; a static contact penetrates through the upper insulating cover plate; the static contact and the upper insulating cover plate are statically sealed; a movable contact detachably penetrates through the lower insulating cover plate; the moveable contact and the lower insulating cover plate are movably sealed; the static contact is provided with a groove into which the moveable contact can be inserted. The system provided by the invention can be used for simulating the contact states under the condition of different contact depths, contact materials and contact pressure; voltage and current are applied to the moveable contact and static contact in a test; the contact resistance and the contact temperature under different contact states can be measured practically; the system provided by the invention can be used for researching the relation and change rule of the contact resistance, contact temperature and contact state of the isolating switch contact in GIS and can establish a basis for the detection for the contact state of the isolating switch contact in GIS.

Description

technical field [0001] The invention relates to an electrical equipment test system, in particular to a contact state simulation test system and method of a disconnector switch in a GIS. Background technique [0002] Closed gas-insulated combined electrical appliances have been widely used in power grids due to their small footprint and good insulation performance. However, due to its fully enclosed structure, once an accident occurs, the consequences are much more serious than the separation of open equipment, and its fault repair is particularly complicated. [0003] GIS (Gas Insulated Switchgear, Gas Insulated Switchgear) is often installed by on-site assembly. Due to the harsh on-site environment and short assembly cycle, mechanical failures are prone to occur, especially for isolating switches, which are prone to contact contact due to the high number of opening and closing. Bad and other mechanical failures. When the isolating switch has faults such as poor contact, ...

AI Technical Summary

Problems solved by technology

Existing studies generally carry out related tests based on the true model of GIS isolating switch. There is a single means of measuring the contact temperature, the contact depth of the contact cannot be quantitatively adjusted, the material process of the moving contact is difficult to replace, the clamping force of the contact is difficult to change, and it is difficult to achieve temperature. The shortcomings of synchronous measurement of rise and contact resistance and high cost of destructive tests are not conducive to simulating poor contact defects under various typical working conditions, and it is impossible to systematically study the fault mechanism of abnormal heating of isolating switches in GIS

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