Switch cabinet partial discharge on-line monitoring system based on FPGA module

Abstract

The invention discloses a switch cabinet partial discharge on-line monitoring system based on an FPGA module, and belongs to the technical field of partial discharge detection system application. Thesystem comprises a partial discharge detector, an ultrasonic sensor, a planar equiangular spiral antenna, a hardware circuit, an upper computer, an FPGA module and an I/O serial port. The FPGA moduleis respectively connected to a power supply module, the ultrasonic sensor, the planar equiangular spiral antenna and an ultrahigh frequency signal detection and hardware circuit, and is connected to the upper computer through an I/O serial port of the FPGA module, and the components are placed in the switch cabinet to monitor the discharge condition of each point on the switch cabinet in real time. The system can detect the specific position of discharge through ultrasonic waves and judge the intensity of discharge according to different phase-amplitude values, and protection is made as soon as possible.

Description

Technical field [0001] The present invention relates to the improvement of partial discharge detection technology for power switch cabinets, in particular to an on-line partial discharge monitoring system for switch cabinets based on an FPGA module, belonging to the technical field of partial discharge detection systems. Background technique [0002] With the development of my country's power industry, the scale of the power grid is increasing. Among them, the high-voltage switchgear, as an important unit of the power system, has become the most widely used and most widely used switchgear. Therefore, higher requirements are required for the maintenance and status detection of the high-voltage switchgear. Research shows that the main internal faults of high-voltage switchgear are insulation faults, and partial discharge is the precursor and main manifestation of insulation faults. Partial discharge is not only the cause of insulation deterioration, but also the precursor and main...

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Problems solved by technology

[0003] The purpose of the present invention is to make up for the defects in the prior art that the partial discharge of the power switchgear cannot be monitored on-line, resulting in reduced insulation performance, accidents and reduced service life, and to provide an on-line partial discharge monitoring system for the power switchgear

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