EA005 - Using Synchrophasor Data to Analyze HVDC and SVC Response to Events

ATC implemented a back to back HVDC system in 2014 and a Static Var Compensation [SVC] system in 2017. We have SCADA data available from each site scanning every 4 seconds and we also have high speed fault recording at both sites but neither of these data sources provided a picture of the dynamic response of the devices to system events that was readily available.

Phasor Measurement Units were installed at both of these facilities to monitor the net output for each. As events occur the equipment response is reviewed, and oddities are investigated. The following plots show the response of each device to a significant double circuit trip event on the system as reference. Note that the SCADA data for each is also included and while it provides information on the general operation of the device the dynamic attributes are hidden.