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This work proposes a real-time electricity bill for quantifying the energy used in domestic facilities in Mexico. This bill is a low-cost tool that takes advantage of the IoT technology for generating an easy reading real-time bill allowing the customers to constantly review and administrate their energy consumption. Using low-cost sensors and the electronic board Particle® Photon, an energy meter is proposed. The presented prototype is extremely compact and satisfies safety measures to be used by anyone in a domestic installation. The measurement data is displayed and processed in real-time, and an appropriate algorithm determines the accumulated kWh. The energy consumed is displayed using an Html interface of easy interpretation for the customers, given recommendations about their consumption habits and some alarms in case of abnormal or high consumption. As a reinforcement measure for avoiding large consumption bills, the system is programmed to send messages to the user, remembering if the estimated consumption is large.

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In this work, virtual instrumentation based learning methodology is presented for teaching measurement and protection in power systems courses at the Faculty of Electromechanical Engineering of the University of Colima, Mexico. The proposed methodology uses the project‐based learning method for developing experience learning. The students develop the hardware which can be used with the conventional machinery laboratory equipment and it considers the necessary security aspects to provide students with safe studying conditions by avoiding the risk of hazards. Through the use of low‐cost voltage and current sensors, the variables of interest of the equipment under measurement and protection are reduced to suitable values for the data acquisition system (DAQ). The voltage and current signals are processed using the LabVIEW® environment and the algorithms for power metering and the most common relays are developed. Acting signals coming from the DAQ are interfaced with the electrical machines by appropriate contactors and which simulates the power switchgear. The implemented hardware and the algorithms developed, allow students to measure the power consumption of conventional loads and to reproduce the most used relays by the electrical industry. This proposal represents an alternative to the high costs of didactic equipment. Finally, a survey provides a good insight of how the application of virtual instrumentation in the teaching process impacts the development of professional skills in the ambit of measurement and protection of power systems.