High-voltage switch cabinet partial discharge online monitoring system
A high-voltage switchgear, partial discharge technology, applied in non-electrical signal transmission systems, signal transmission systems, testing dielectric strength and other directions, can solve problems such as threats, affecting the safe and reliable operation of the power grid, poor contact of conductive connections, and safe operation.
Inactive Publication Date: 2015-12-16
WUHU KAIXIN ARRESTER
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Problems solved by technology
The defect or deterioration of the internal insulation part of the high-voltage switchgear and the poor contact of the conductive connection part will threaten its safe operation, which will directly affect the safe and reliable operation of the power grid.
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[0009] Referring to the accompanying drawings, through the description of the embodiments, the specific embodiments of the present invention include the shape, structure, mutual position and connection relationship of each part, the function and working principle of each part, and the manufacturing process of the various components involved. And the method of operation and use, etc., are described in further detail to help those skilled in the art have a more complete, accurate and in-depth understanding of the inventive concepts and technical solutions of the present invention.
[0010] The switchgear partial discharge on-line monitoring system of the present invention adopts a layered and distributed structure, which is divided into three layers: the equipment and sensor layer, the monitoring and early warning equipment layer, and the analysis and diagnosis layer. The partial discharge pulse signal is transmitted to the monitoring equipment in the bay layer for analysis.
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The invention relates to a high-voltage switch cabinet partial discharge online monitoring system comprising an equipment and sensor layer, a monitoring and early warning equipment layer and an analysis and diagnosis layer. The sensors of the equipment and sensor layer are installed on the monitored equipment in a distribution way so that partial discharge pulse signals of electrical equipment can be acquired in real time and transmitted to the monitoring and early warning equipment layer and the analysis and diagnosis layer. The monitored equipment of the equipment and sensor layer comprises switch room buses, PT / CT, circuit breakers and bushings. The equipment and sensor layer adopts the coupled capacitive sensors to be installed between each phase of bus and the ground. Related information is obtained via partial discharge online monitoring so that the insulation condition of the internal part of a switch cabinet can be analyzed.
Description
technical field [0001] The invention belongs to the technical field of electric power protection and relates to a high-voltage switchgear, in particular to an on-line monitoring system for partial discharge of a high-voltage switchgear. Background technique [0002] Among the various equipment in the power system, the high-voltage switchgear is a very expensive and important electrical equipment. The safe operation of high-voltage switchgear is of great significance to the safety of the power grid. Defects or deterioration of the internal insulating part of the high-voltage switchgear, poor contact of the conductive connection part, etc. will threaten the safe operation of the switchgear, thus directly affecting the safe and reliable operation of the power grid. Relevant data show that in the statistics of 6-10kV switchgear accidents in the national power system, the faults caused by insulation and current carrying account for 40% of the total, and the accidents caused by t...
Claims
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Login to View More IPC IPC(8): G01R31/12G08C17/02G08C23/06
Inventor 陈波
Owner WUHU KAIXIN ARRESTER