Hardware-in-the-loop testing provides a safe, flexible environment for the testing of digital substation components, either individually or as a whole system, prior to deployment. This is the only way to examine the effects of protection misoperation due to risks such as dropped data packets before installation on the utility network.
A network interface card (the GTNETx2 card) receives data from the power system simulation via optical fibre and transmits it – in standard-compliant packets – to external IEDs via the process or station bus. The card is bidirectional and can also provide data from external devices to the simulated network.
Dynamically change and monitor the Test Mode, Needs Commissioning, and individual Quality Bitmaps of GOOSE Messages
Simulate packet loss, unwanted delay, out of order packets, and loss of synchronization events
Simulate IED performance variation via data quality manipulation