Automatic Power Factor Correction
Continuous power factor measurement with automatic capacitor bank switching and before-and-after readings.
- Suitable for
- Diploma
- Technology
- Zero-crossing detection
Advanced8–10 days
IoT · Energy Monitoring
IoT Smart Energy Meter
Live measurement of voltage, current, power and energy for a demonstration load, with a phone dashboard.
- Difficulty
- Advanced
- Typical time
- 8–10 days
- Suitable for
- Diploma
Price
Contact for price
Cost depends on components, complexity and which deliverables you need, so we quote after understanding your requirement.
Technologies
- ESP32
- Current transformer sensing
- Power and energy calculation
- Cloud dashboard
Project overview
A current transformer and a voltage sensing stage feed a metering front end that calculates real power, apparent power and power factor, then accumulates energy in kilowatt-hours. Readings appear on a local display and on a dashboard, so you can show consumption changing as loads are switched.
It is one of the strongest projects for electrical students because everything it produces is a number from your syllabus. Switching an inductive load and watching the power factor fall is a demonstration that answers half the viva questions before they are asked.
The metering front end operates at low voltage on a demonstration load bank. If a mains-referenced version is genuinely required by your department, the measurement section is enclosed and isolated — discussed and agreed before the build.
Features
- Live voltage, current, real power and power factor
- Accumulated energy in kilowatt-hours
- Phone dashboard with a consumption graph
- Demonstration load bank so readings change visibly during the viva
- Isolated measurement section within an enclosure
How it works
- 1The current transformer produces a signal proportional to the load current.
- 2Voltage and current are sampled together many times per cycle.
- 3Real power is computed from the instantaneous products, and apparent power from the RMS values.
- 4Power factor follows as the ratio of the two, and energy accumulates over time.
- 5Every quantity is shown on the LCD and published to the dashboard.
Components used
- ESP32 development board
- SCT-013 current transformer
- Voltage sensing module
- Demonstration load bank (lamp and fan)
- 16x2 I2C LCD
- Enclosure with isolated measurement section
Questions about this project
How accurate is it compared with a real energy meter?
It is calibrated against a reference meter during setup, and the calibration procedure is supplied so you can repeat and report it. Present it as an academic instrument, not a certified meter.
Is it safe to connect to mains?
The standard build measures a low-voltage demonstration load. A mains-referenced version requires an enclosed and isolated measurement section and must be agreed before the build starts.
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Need the IoT Smart Energy Meter in Surat?
Send your class or course and your submission date and we'll confirm what's achievable, what it includes and what it costs — before you commit.