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Large Angle Deviation in Grid-Following IBRs Upon Grid Voltage Dip

Journal Article · · IEEE Transactions on Energy Conversion
 [1];  [2];  [3]
  1. University of South Florida, Tampa, FL (United States); University of South Florida
  2. RWE Clean Energy, Austin, TX (United States)
  3. University of South Florida, Tampa, FL (United States)
+ Show Author Affiliations
In the 2021 Texas Odessa large-scale solar PV tripping events, phase-locked-loop (PLL) loss of synchronism is identified as a major cause of solar PV tripping. When solar PVs detected a large phase angle deviation (e.g., 10 degrees), tripping commands were initiated. Here, the large phase angle deviation was triggered by a transmission line fault 200 miles away, which in turn led to approximately 30% voltage drop in the 345-kV system. This paper offers a plausible reason why grid-following inverter-based resources (IBRs) may experience a large angle deviation upon grid voltage dip. Critical operating conditions contributing to such phenomena are identified via analysis and their effects are demonstrated using electromagnetic transient (EMT) simulation. Furthermore, the effect of converter control, e.g., grid-following control vs. grid-forming control, is examined. It is found from EMT simulation results that frequency and voltage control are helpful in mitigating angle deviation. Furthermore, linear block diagrams are derived to examine why frequency control can effectively suppress large angle deviation.
Research Organization:
University of South Florida, Tampa, FL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
Grant/Contract Number:
EE0008771
OSTI ID:
1993962
Journal Information:
IEEE Transactions on Energy Conversion, Journal Name: IEEE Transactions on Energy Conversion Journal Issue: 1 Vol. 39; ISSN 0885-8969
Publisher:
IEEECopyright Statement
Country of Publication:
United States
Language:
English

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Related Subjects

14 SOLAR ENERGY
Controls
Grid-following control
Grid-forming control
Phase-locked-loop
Solar PVs
Synchronization