Q:   Why should I review and calibrate my existing short circuit model before adding IBR models?

A:   It is important to review your existing short circuit model before adding IBR models to it because the IBR's response will make troubleshooting the network solution more difficult. Additionally, some network model anomalies do not necessarily impact conventional short circuit network solutions. Still, they can cause significant errors in IBR short circuit network solutions. Taking steps to identify these anomalies and make adjustments before adding IBR models can save time in creating a network model ready to simulate IBR fault response.