System for on-line monitoring abnormal vibration of GIS equipment isolating switch

Abstract

The invention provides a system for on-line monitoring abnormal vibration of a GIS equipment isolating switch. The system comprises a signal acquisition unit formed by a piezoelectric type accelerometer and a current transformer, an equipment terminal signal processing unit formed by a filtering amplification module, a high-speed AD sampling module, a DSP module, an ARM processor module, a communication module and a power supply module, a sensor disconnecting-prevention unit formed by a connection board, a connecting fixing member, a copper sheet, a controller and a piezoelectric transducer, a background monitoring server and a human-machine interface. During use, the signal acquisition unit acquires vibration and current signals and sends the vibration and current signals to the equipment terminal signal processing unit for processing, the equipment terminal signal processing unit sends preprocessed information to the background monitoring server for monitoring and determining, and the sensor disconnecting-prevention unit assists in fixing the piezoelectric type accelerometer and gives off an alarm when the piezoelectric type accelerometer falls off. The system has the advantages of simple structure and easy realization and ensures timely fault discovering, rapid response and highly-reliable operation during use.

Description

technical field [0001] The invention relates to the field of substation equipment monitoring, in particular to an online monitoring system for abnormal vibration of a GIS equipment isolating switch in a substation. Background technique [0002] With the development of society and the advancement of technology, there are more and more unattended substations relying on related automation systems. Automatic monitoring of equipment in substations is an important part of unattended substations; GIS equipment in substations (GIS equipment: Gas Insulated Switchgear equipment, which refers to sulfur hexafluoride enclosed combined electrical appliances, known internationally as "gas insulated switchgear"), isolating switches are very important and have the largest number. If the isolating switch vibrates abnormally during use, it is easy to cause damage to its Failure occurs, which causes GIS equipment to fail, resulting in adverse consequences such as long power outages, high mainte...

AI Technical Summary

Problems solved by technology

[0002] With the development of society and the advancement of technology, there are more and more unattended substations relying on related automation systems, and the automatic monitoring of equipment in substations is unattended An important part of the substation; among the GIS equipment in the substation (GIS equipment: Gas Insulated Switchgear equipment, referring to sulfur hexafluoride closed combination electrical appliances, internationally known as "gas insulated switchgear"), the disconnector is very important and has the largest number. If the isolating switch vibrates abnormally during use, it will easily cause its failure, which will cause the failure of GIS equipment, resulting in long power outages, high maintenance costs, large accident impacts, and serious economic losses.

At present, the common devices or systems for monitoring the isolating switch of GIS equipment in substations have the following problems: potential safety hazards, fault discovery, and response are not timely enough, and the monitoring effect is not good; During use, the vibration sensor, one of the main components, is disconnected from the GIS equipment due to long-term vibrating working environment, loosening, accidental touch, or artificial unplugging due to theft. The reliability is not high, which brings security risks to the operation of GIS equipment in substations

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