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Italy’s largest renewable energy producing region is Apulia, home to 2,661MW of solar and 2,555MW of wind power, but with increasing need for hosting capacity, service improvement and efficiency optimisation, resulting in thePuglia Active Network (PAN) project.

ZIV and Italian energy producer ENEL, have partnered for the development of the ADF/RGDM working closely from the specifications to the deployment of the devices in the field. The result is an advanced IED, which will be extensively used in ENEL and its subsidiaries worldwide.

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ZIV’s devices main functionality is its advanced directional fault passage detector which is able to trip a MV circuit breaker and isolate the faulty section of the network.

Each ADF is installed in the circuit breaker of the outgoing MV feeder in secondary substations. The ADF monitors and controls the associated MV switch. In the event of a fault downstream the ADF’s connection point, it is detected by the IED which immediately issues an IEC61850 GOOSE message to block the tripping of the breakers upstream. If the device does not receive such a message trips the breaker and interrupts the fault current. This method ensures that the breaker which operates is the one closest to the fault, therefore minimizing the affected portion of the grid.