Pub Date : 2013-02-01DOI: 10.1109/GREENTECH.2013.67
B. Lundstrom, M. Shirazi, M. Coddington, B. Kroposki
The world's energy paradigm continues to undergo a rapid shift towards an increased use of renewable energy sources. To support this shift, an advanced electric power system architecture is being implemented by many electric utilities, interconnected with new distributed energy resources. As these new installations occur, it is essential to verify that their grid interconnection systems (ICS) conform to the relevant grid interconnection standards and that they perform satisfactorily under a variety of variable resource input and grid output conditions. This paper describes a Grid Interconnection System Evaluator (GISE) that leverages hardware-in-the-loop (HIL) simulation techniques to rapidly evaluate the grid interconnection standard conformance of an ICS according to the procedures in IEEE Std 1547.1TM. The architecture and test sequencing of this evaluation tool, along with a set of representative ICS test results from three different photovoltaic (PV) inverters, are presented. The GISE adds to the National Renewable Energy Laboratory's (NREL) evaluation platform that now allows for rapid development of ICS control algorithms using controller HIL (CHIL) techniques, the ability to test the dc input characteristics of PV-based ICSs through the use of a PV simulator capable of simulating real-world dynamics using power HIL (PHIL), and evaluation of the grid interconnection conformance of an ICS.
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