Total Harmonic Distortion Measurement For Energy Monitoring Reference Design


Design files


The TIDM-THDREADING reference design implements power quality analysis in a three-phase energy measurement system. Power quality monitoring and analysis has an increasingly large role in improving the reliability of the electricity grid. The design measures Total Harmonic Distortion(THD), monitors voltage sags and swells, and measures phase-to-phase angles to help determine phase sequence and prevent accidental phase swapping. Four-quadrant energy measurement is supported for net metering systems with bi-directional energy flow.

  • THD calculated for voltage and current
  • Voltage sag and swell events logged with programmable threshold levels
  • Phase-to-phase angle measurement
  • Four quadrant energy measurement with Class 0.2 accuracy
  • Complete Energy Library with fundamental voltage and current, fundamental active and reactive power, active and reactive energy, Root Mean Square(RMS) current and voltage, power factor, and line frequency
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Design files & products

Design files

Download ready-to-use system files to speed your design process.

TIDUB70A.PDF (2672 K)

Reference design overview and verified performance test data


Detailed schematic diagram for design layout and components


Complete listing of design components, reference designators, and manufacturers/part numbers


Files used for 3D models or 2D drawings of IC components


Design file that contains information on physical board layer of design PCB


PCB layer plot file used for generating PCB design layout


Includes TI products in the design and potential alternatives.

MSP430 microcontrollers

MSP430F67791APolyphase metering SoC with 7 Sigma-Delta ADCs, LCD, real-time clock, 512KB Flash, 32KB RAM

Data sheet: PDF | HTML
Buck converters (integrated switch)

TPS540603.5V to 60V Input, 0.5A Step-Down Converter with Eco-Mode

Data sheet: PDF | HTML

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Evaluation board

EVM430-F6779 — EVM430-F6779 - 3 Phase Electronic Watt-Hour EVM for Metering

This EVM430-F6779 is a three-phase electricity meter evaluation module based on the MSP430F6779 device. The E-meter has inputs for three voltages and three currents, as well as an additional connection to setup anti-tampering. It allows a customer to test the new (...)

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Technical documentation

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Type Title Date
* Design guide Total Harmonic Distortion Measurement For Energy Monitoring Design Guide (Rev. A) Mar. 01, 2016

Related design resources

Reference designs

TIDM-3PHMTR-TAMP-ESD Three-Phase Metrology With Enhanced ESD Protection and Tamper Detection Reference Design TIDM-THREEPHASEMETER-F67641 Class 0.5 Three-Phase Smart Meter Reference Design TIDM-THREEPHASEMETER-F6779 High Accuracy Three-Phase Electricity Meter with Tamper Detection

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