question

midsummerenergy avatar image

Quattro Micro-Grid with External Islanding

A Grid-tied Quattro set up as ESS with Fronius PV inverter (Country Code set to 'Other - Not Compliant') on Output using Frequency Shifting. Quattro cannot be installed at grid connection point so cannot use built-in anti-islanding. Loads connected on AC Input and AC Output side of Quattro. Grid connection point is fitted with external anti-islanding relay.


When operating stand-alone as a Micro-Grid - the external anti-islanding relay isolates the grid supply - so there is no external voltage at AC Input, will the Quattro allow and regulate PV power to the AC Input as well as the AC Output?

FroniusRelayfrequency
10 |3000 characters needed characters left characters exceeded

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

1 Answer
Stevo07 avatar image
Stevo07 answered ·

The Quattro can only use frequency shifting on its output, not the input.

1 comment Share
10 |3000 characters needed characters left characters exceeded

Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.