PowerBI integration in OMS is currently available as part of the Public Preview. You can find this in your OMS workspace under “Preview Features” as shown below.
Set the PowerBI Integration to enabled.
Once this is enabled, in a log search you gain the PowerBI option shown below.
Click on the PowerBI icon and enable your PowerBI credentials and you are now configured to use the preview version of this functionality.
For details on how to use this functionality to send security data see the full blog post at: http://blogs.catapultsystems.com/cfuller/archive/2016/03/29/using-power-bi-and-oms-for-security-dashboards-and-reports/