MATLAB scripts or models for grid frequency measurement in demand side management?

The discussion focuses on developing a prototype frequency measuring device for domestic demand side management to maintain grid stability by monitoring frequency deviations and controlling loads accordingly. The measurement approach involves converting the analog voltage input into a square wave using a comparator, then measuring the time interval between edges to calculate frequency. An Arduino Uno is proposed for frequency measurement and load control, but its 16 MHz clock and interrupt latency limit measurement resolution and accuracy. Clock drift and timing calibration are also concerns for precise frequency measurement. Alternatives with higher processing power and clock speeds, such as Raspberry Pi, Beaglebone Black, or ARM-based Teensy boards compatible with the Arduino IDE, are suggested for improved resolution and data handling. The circuit design should include electrical isolation between high voltage and low voltage control circuits, typically achieved using transformers for measurement and electromechanical relays or drive circuits for load switching. Simulation in MATLAB/Simulink is recommended before hardware implementation. The system aims to emulate grid frequency response by switching three-phase loads via circuit breakers to stabilize frequency within tolerance limits.
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