Comparative Analysis of Time-Series Studies and Transient Simulations for Impact Assessment of PV Integration on Reduced IEEE 8500 Node Feeder

Software tools available to perform power system analysis studies for distributed energy resource (DER) integration at distribution levels usually divide into two major types: electromagnetic transient analysis software such as PSCAD/EMTDC or steady-state analysis tools, such as OpenDSS. The studies have to be performed over several time periods to allow investigation of potential impact on time-dependent feeder control devices due to intermittency in generation and variation in feeder load for selected feeder operation conditions. This study compares the simulation results and response of feeder control devices. The aim is to test the validity of the simulation results for OpenDSS and determine what minimum time-step can be used to obtain the valid results.