Projects / Electrical / Electrical project 57

Grid-Tie Inverter Anti-Islanding Detection Model

Approx. component budget: Rs. 6,000 - 10,000

Objective

Check how quickly and reliably the inverter detects loss of the grid and stops feeding the load.

What you will build

A low-power inverter model connected to a grid-simulating source and a local load, with a detection algorithm that disconnects when the grid is lost.

Results you can expect

• Detection time in milliseconds for grid loss at different load matching conditions
• False trip rate
• Frequency and voltage window settings
• And a comparison of two methods

What you will learn

Grid codes, islanding risk, frequency and voltage windows, and the safety reason for anti-islanding.

Tools and notes

Microinverter kit or SPWM inverter, variac or isolation transformer, ESP32/STM32, oscilloscope. Never connect to the real grid; use an isolated lab source.

Resume points from this project

• Built and tested Grid-Tie Inverter Anti-Islanding Detection Model; objective: check how quickly and reliably the inverter detects loss of the grid and stops feeding the load.
• Measured and analysed detection time in milliseconds for grid loss at different load matching conditions and false trip rate; wrote the report and presented the results in a viva. Add your own numbers: [x].

Replace [x] with your own measured results. Write only what you really did.

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