Construcción de un prototipo analizador de energía eléctrica de bajo costo para el Centro de Control de la Empresa Eléctrica Ambato S.A.

Abstract

The objective of this graduate research project was to build an electrical power quality analyzer prototype for the Control Center of the electric company Empresa Eléctrica Ambato SA. As part of this, the most important parameters to be estimated by a commercial electrical quality analyzer were determined. Next, an electrical-electronic design was proposed and a simulation was undertaken to verify that it was capable of measuring the voltage and current inputs in order to estimate the active, apparent and reactive power, as well as the network frequency. Subsequently, electrical circuits were built and integrated into an electronic board to later program the microcontrollers: one dedicated to the measurement and presentation of the user interface and the other dedicated to data storage. A container for the prototype was designed using the CAD program and built in 3D. Tests were then carried out in a commercial environment, six important parameters of three-phase lines were measured and recorded according to the requirements set out at the beginning of the research. In addition, with the objective of establishing the precision of the prototype, measurements on a voltage and current line were compared with measurements made with approved commercial equipment, determining a variation of -0.42% for the voltage measurement and -0.75% for the current measurement. Such variation was considered adequate for carrying out measurements for operational purposes at the electric company Empresa Eléctrica Ambato SA. Finally, it was verified that the results and graphs are stored in the cloud in real time through wireless communication. With the stated results, it can be affirmed that the objective set at the beginning of the research project has been met. The prototype was developed using a free hardware and software platform, for which other measurements can be programmed and thus there is the possibility of increasing the functions of the energy quality analyzer.