Abstract
This paper presents two methods of detecting inverter downtime and estimating lost production from downtime events using timeseries system production measurements. The methods focus on distinguishing communications interruptions from true production outages and are successful in most cases. To enable fleet-scale analysis of inverter availability, the methods are designed to be semi-autonomous. The first method uses only inverter and system meter AC power measurements while the second uses cumulative production and expected energy data to classify outages and estimate lost production. The methods are demonstrated using real field data and the results are discussed.
Original language | American English |
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Number of pages | 6 |
DOIs | |
State | Published - 2021 |
Event | 2020 47th IEEE Photovoltaic Specialists Conference (PVSC) - Calgary, Canada Duration: 15 Jun 2020 → 21 Aug 2020 |
Conference
Conference | 2020 47th IEEE Photovoltaic Specialists Conference (PVSC) |
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City | Calgary, Canada |
Period | 15/06/20 → 21/08/20 |
Bibliographical note
See NREL/CP-5K00-76022 for preprintNREL Publication Number
- NREL/CP-5K00-79282
Keywords
- inverters
- meters
- monitoring
- power measurement
- production
- reliability
- uncertainty