I understand that you want to connect Power Automate with the Denodo Platform using a custom connector. If the Power Automate supports the ODBC connection then I would make use of the ODBC driver shipped in the Denodo Platform Installer in order to connect to the Virtual Dataport server.
Similarly, you could also make use of any of the [access mechanisms](https://community.denodo.com/docs/html/browse/latest/en/vdp/developer/introduction/introduction) like JDBC interface, ADO.NET data provider, SOAP, and REST web service interface for connecting to the Virtual DataPort and accessing its elements from an external client application.
However, at the moment there is no official Denodo connector to connect to Virtual DataPort Server from the Power Automate workflow application. You could contact the Microsoft team on the connector for connecting to the Denodo Platform from Power Automate.
You can also take a look at the section [Access Through ODBC](https://community.denodo.com/docs/html/browse/latest/en/vdp/developer/access_through_odbc/access_through_odbc ) of the Virtual DataPort Developer Guide for more information.
Hope this helps!