关键词：电力系统；电力公司；光伏电源；可再生能源
摘 要：The world's energy paradigm continues to undergo a rapid shift, fueled by legislative mandates and quotas, towards an increased use of renewable energy sources. To support this shift, an advanced electric power system (EPS) architecture, including increasing amounts of distributed resources, load control, bi-directional power flow, advanced metering, and improved communications is gaining attention and being implemented by many electric utilities. As new distributed energy resources are interconnected with the EPS, it is essential to verify not only that their grid interconnection systems (ICS) conform to the relevant U.S. grid interconnection standards (IEEE Std 1547 and UL 1741), but also that they perform satisfactorily under a variety of variable resource input and grid output conditions. To this end, the National Renewable Energy Laboratory (NREL) has been developing a platform for evaluation of ICSs using hardware-in-the-loop (HIL). This report describes an important addition to that platforma grid interconnection system evaluator (GISE). The GISE is a combined hardware and software solution that leverages HIL simulation techniques to automate portions of the often time-consuming grid interconnection conformance test procedures of IEEE Std 1547.1. Beyond just automating grid interconnection conformance test procedures for standard equipment, the GISE provides a platform to test the capability of an ICS with respect to advanced grid functions such as voltage and/or frequency ride-through, volt/var control, or other ancillary services. This report provides a comprehensive set of test results demonstrating the GISE's accuracy, repeatability, and versatility in executing IEEE Std 1547 over/undervoltage and frequency and unintentional islanding tests. This testing regime employed three different commercial residential photovoltaic inverters to also show the applicability of the GISE to a variety of ICS topologies.