Desenvolvimento de um sistema de injeção e controle do gás hexafluoreto de enxofre nos disjuntores em subestações elétricas da Electricidade de Moçambique

Abstract

This work describes the development process of a SF6 gas injection and control system, which is a system capable of visualizing the gas level in a circuit breaker in an electrical substation from a computer in the control room using software. It is also possible to trigger commands to fill the gas from the same software, and it is also possible to fill the gas using the hardware. The system is divided into two parts, namely Hardware and Software. In the Hardware, we have the pressure sensor that will collect information from the plant and send it to the microcontroller, which in turn will be connected to the software, which can vi- sualize the information collected by the sensor. With both, that is, hardware and software, it is possible to give the order to open and close the solenoid valve, which can allow or inter- rupt the passage of gas to the circuit breaker. This valve is electromechanical and is driven by an electric current, which allows the movement of the piston after it is energized. While the software was all developed using the C programming language. In programming, the language is where the hardware (machine) and the programmer communicate. It is a for- mal process that works through a series of instructions, symbols, keywords and semantic rules. The C language is called an intermediate level language because it combines the elements of high-level languages with the functionalism of machine-level language