Switch partial discharge state monitoring device based on distributed network platform

Abstract

A switch partial discharge condition monitoring device based on distributed network platforms comprises a partial discharge signal acquisition assembly, a CPU analysis and diagnosis assembly and an information management assembly. The partial discharge signal acquisition assembly is connected with a superhigh frequency sensor and a noise sensor in a switchgear room, an FPGA is adopted to collect partial discharge signals at a high speed and to forward the partial discharge signal through the Ethernet, and the partial discharge signals and voltage phases are synchronously collected. The CPU analysis and diagnosis assembly processes sampling data sent by the partial discharge signal acquisition assembly in real time, a high-performance DSP is adopted to analyze and process the sampling data, types of partial discharge are judged, and a partial discharge brief report, a PRPD map and a PRPS map are generated. The information management assembly manages the processing result of the CPU analysis and diagnosis assembly and achieves partial discharge tendency statistical query function through large-capacity data storage and retrieval. The monitoring device is stable in performance and long in service life, and improves operational reliability of a power grid.

Description

technical field [0001] The invention belongs to the field of power system state monitoring, and in particular relates to a switch partial discharge state monitoring device. Background technique [0002] Due to the high field strength inside the switch, partial discharge occurs during operation when there are some defects inside the device. Partial discharge is one of the main causes of switchgear insulation degradation, and it is also an important feature to describe the aging of switchgear insulation. Through the detection and analysis of the partial discharge signal, it can be judged whether there is some insulation hidden danger inside the switch. At present, the application of partial discharge detection technology in switchgear has become more and more extensive. [0003] Switchgear is the equipment with the largest maintenance workload in the primary equipment of the power system. According to relevant statistics, most of the maintenance costs are spent on switches, ...

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Problems solved by technology

[0011] In order to solve the problems of unstable performance, short service life, poor maintainability, poor interoperability and false alarms of traditional partial discharge state monitoring devices, the present invention discloses a switch partial discharge state monitoring device based on a DSP+FPAG distributed network platform

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