Local discharge detection device in running state of high-voltage combined electric appliance

Abstract

The invention belongs to electric transmission and transformation equipment, and particularly relates to a local discharge detection device in a running state of a high-voltage combined electric appliance. The device comprises a bus (12), a discharge point (11), a bracket (1) and a local discharge monitor (4); the combined electric appliance and the bus (12) are placed in a metal barrel (2); a node flange (2-1) is arranged at the open end of the metal barrel (2); a node flange (7-1) matched with the metal barrel (2) is arranged at one end of a sleeve (7); a basin insulator (8), the middle of which is provided with a circular hole, is arranged between the node flanges (2-1, 7-1) of the metal barrel (2) and the sleeve (7); the metal barrel (2) and the sleeve (7) are fastened together by using bolts and nuts (10, 9); the bus (12) passes through the circular hole in the middle of the basin insulator (8) and is inserted into the metal barrel (2); and ultrahigh-frequency sensors (6) are arranged at the node flanges (2-1, 7-1). The detection method is simple, convenient, accurate and reliable.

Description

technical field [0001] The invention belongs to equipment for power transmission and transformation, in particular to a partial discharge detection device under the operating state of a high-voltage combined electrical appliance. Background technique [0002] At present, with the rapid development of my country's electric power industry, there are always hidden dangers to the safety of the electric power industry, which not only brings inconvenience to people's production and life, but also causes economic losses. Combined electrical appliances are used in many substations. There is no relatively mature method for how to do insulation inspection, maintenance and testing of combined electrical appliances under operating conditions, and it is difficult to ensure safe and stable operation of power equipment. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, and provide a partial discharge detecti...

AI Technical Summary

Problems solved by technology

[0002] At present, with the rapid development of my country's electric power industry, there are always hidden dangers to the safety of the electric power industry, which not only brings inconvenience to people's production and life, but also causes economic losses.

Combined electrical appliances are used in many substations. How to do a good job of insulation detection, maintenance and testing of combined electrical appliances in the operating state is not yet a relatively mature method, and it is difficult to ensure safe and stable operation of power equipment.

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