Abstract
As revised interconnection standards for grid-tied photovoltaic (PV) inverters address new advanced grid support functions (GSFs), there is increasing interest in inverter performance in the case of abnormal grid conditions. The growth of GSF-enabled inverters has outpaced the industry standards that define their operation, although recently published updates to UL1741 Supplement SA define test conditions for GSFs such as volt-var control, frequency-watt control, and voltage/frequency ride-through, among others. This paper describes the results of a comparative experimental evaluation on four commercially available, three-phase PV inverters in the 24.0-39.8 kVA power range on their GSF capability and its effect on abnormal grid condition response. The evaluation examined the impact particular GSF implementations have on run-on times during islanding conditions, peak voltages in load rejection overvoltage scenarios, and peak currents during single-phase and three-phase fault events for individual inverters. Testing results indicated a wide variance in the performance of GSF enabled inverters to various test cases.
Original language | American English |
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Number of pages | 5 |
DOIs | |
State | Published - 26 Oct 2017 |
Event | 2017 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2017 - Washington, United States Duration: 23 Apr 2017 → 26 Apr 2017 |
Conference
Conference | 2017 IEEE Power and Energy Society Innovative Smart Grid Technologies Conference, ISGT 2017 |
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Country/Territory | United States |
City | Washington |
Period | 23/04/17 → 26/04/17 |
Bibliographical note
See NREL/CP-5D00-67576 for preprintNREL Publication Number
- NREL/CP-5D00-71019
Keywords
- Anti-islanding
- Fault current
- Frequency-watt control
- Load rejection overvoltage
- Ride-through
- Volt-var control