Wireless Sensor Network for Real-time Substation Equipment Monitoring
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Abstract
The main objective of this research thesis is to provide real-time monitoring of the status of substations of power systems by wireless transmission from a substation to a control center in real time. This will not only reduce the amount of labor that is being deployed at each substation to record data manually but also replace wired communication with wireless using Long-Term Evolution (LTE)/4G Technology. The process starts from the substation, the data and readings are sent to the microcontroller that works on CANbus and Modbus interfaces which then sends the data being collected in real-time to the server. The server processes and stores the data in the database, waiting for a request from the client to respond with the needed data. After the request is sent from the client, who in this case is the web interface, to the server, then a response is sent to the web interface. The data is received by the web interface and is further processed and displayed on the browser as plots or tables. This allows engineers to virtually monitor the status of substations easily without having to physically visit the substations to get the information needed. Multiple steps were taken with the integration of the data collected from the microcontroller to the server, and corresponding ports were used for the web app and the microcontroller to allow them to communicate in real-time. Encryption will be used to make sure all the data that is traveling between the components is protected and no other external entity can access them.
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Keywords
GPRS, Long-Term Evolution (LTE), Substation Monitoring, Server, ESP32 Microcontroller, Web Interface, Symmetric Encryption, Asymmetric Encryption