Design Of Monitoring System For Safety Status Of High-voltage Switchgear

As an important part of the power system,the high-voltage switchgear’s operating status greatly reflects the operating status of the power system and also affects the safe operation of the power system.Therefore,it is very necessary to monitor the safety status of the high-voltage switchgear..High-voltage switchgear is prone to failures such as overheating faults,insulation faults,and circuit breaker mechanical faults during operation.This paper monitors the relevant parameters according to the phenomena when these faults occur,so as to achieve the monitoring of the safe operation status of high-voltage switchgear.At present,most high-voltage switchgear parameter monitoring systems are limited to a single monitoring function.The high-voltage switchgear safety status monitoring system designed in this paper can not only realize the function of collecting the monitored data information accurately and in real time,but also Combined with the Internet of Things technology,the low-latency wireless transmission and remote monitoring of monitoring data are realized.The monitoring system for the safety status of high-voltage switchgear designed in this article first collects data collected by sensors using the STM32 microcontroller,and sends these data to the data collection node ESP32 using the LoRa wireless communication module.ESP32 uses Wi Fi internet technology to send the received data information to the cloud platform,where the data is stored and diagnosed.During this process,the transmission delay of data can be ignored.At the same time,combined with the data processing mechanism of edge cloud collaboration,it can greatly reduce the data processing delay and error of long-distance transmission.For the upper computer management layer,this article uses the ThingsPanel cloud platform of the Internet of Things to design corresponding small components for the analysis of all terminal device data,converting textual data into clear and visualized data.Finally,by comparing the actual measurement data of the high-voltage switchgear with the feedback data from the cloud platform,the feasibility and accuracy of real-time detection of relevant data were confirmed.The error of contact temperature data was controlled within±0.5℃,and the system was stable and reliable during the operation of the high-voltage switchgear,with a bit error rate as low as 0.01%.Simultaneously,the fault state,and ideal results were obtained.Successfully achieved the collection and storage of monitoring data,as well as the analysis and alarm of typical faults.