MUMBAI, India, Jan. 2 -- Intellectual Property India has published a patent application (202541124707 A) filed by Sareddy Venkata Rami Reddy; K. Sailaja; and B. Sreenivasa Kumar Reddy, Pulivendula, Andhra Pradesh, on Dec. 10, 2025, for 'modified islanding detection algorithm for hybrid distributed generating system.'

Inventor(s) include Sareddy Venkata Rami Reddy; K. Sailaja; and B. Sreenivasa Kumar Reddy.

The application for the patent was published on Jan. 2, under issue no. 01/2026.

According to the abstract released by the Intellectual Property India: "Distributed generating is essential to both keeping up with the rising power demand and reducing the amount of money spent on fossil fuels. There is widespread agreement that the world should prioritise the development of renewable energy sources like solar and wind. This study describes the design and utility-grid integration of a hybrid distributed generating system that utilises photovoltaic and wind-driven permanent magnet synchronous generators (hybrid PMSG-PV systems). In order to prevent damage to the grid, hybrid distributed generating systems, consumer devices, and line workers must all be protected from islanding. Detecting islanding in a hybrid distributed generating system has been proposed using a passive islanding, time spectral analysis. Measuring and amplifying the ripple content present in voltage at PCC about 0.3 seconds after the permissible delay time after the circuit breaker opens on the utility grid side is how islanding is discovered using this method. When compared to other methods, the suggested method is seen to have smoother islanding detection waveforms thanks to increases in both window size and threshold limit. The suggested method is verified in a variety of non-islanding scenarios, such as fault occurrence, parallel feeder loss, and load shift, etc. In addition, the cost is reduced, the response time is rapid, and there is no non-detection zone (NDZ) when using these methods. Unlike active islanding detection methods, its functioning is unaffected by the size, quantity, or type of distributed generators linked to the utility grid, hence there are no power quality concerns."

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