Modeling of Distributed Generation under Next Generation Interconnection Requirements

Abstract

The amount of renewable energy and distributed generation is increasing in the distribution network and is changing the network from passive to active. IEEE is currently revising the interconnection Standard 1547 and in its project P1547 it is anticipated that the new version will include ride through requirements for distributed generation to enhance the stability of the system. Extending existing Wind and PV models with next generation controls evaluate the effectiveness of these new requirements. The extended PV model is added to an IEEE 34-node test feeder and the active distribution network’s fault response is compared to the WECC simplified model for distributed PV system used for bulk system stability studies. It was found the draft IEEE P1547 ride-through requirements increase the amount of PV systems that remain connected post fault. The parameters of the WECC simplified model for distributed PV systems are optimized to match the results from the IEEE-34 node test system with distributed PV. This allows the active distribution system to be simplified for bulk system stability studies and improves the computational performance.