TY - GEN
T1 - Mitigation of fault related voltage swell on distribution feeders using DER-based advanced inverter controls
AU - Thakar, Sushrut
AU - Vittal, Vijay
AU - Ayyanar, Raja
N1 - Funding Information:
ACKNOWLEDGMENT This work is supported by the U.S. Department of Energy under award number DE-EE0008773. The authors acknowledge the team at Arizona Public Service for providing various inputs and for their work towards the project, and the team at National Renewable Energy Laboratory for their contributions in creating the high penetration scenarios.
Funding Information:
This work was supported by the U.S. Dept. of Energy, Solar Energy Technologies Office, under award number DE-EE0008773.
Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - Unbalanced faults in distribution feeders can impact voltages on the non-faulted phases. This paper models a real-life feeder with a high penetration level of solar photovoltaic (PV) units in detail including the secondary circuits, and shows a large voltage swell in one of the non-faulted phases of the feeder during a single line to ground fault. The voltages seen during this swell are more than 1.2 p.u., which can have detrimental impacts on the connected equipment and can also lead to loss of connected generation. The reason for this voltage swell is found to be the equivalent impedance at the fault location resulting from the ratio of zero and positive sequence cable impedances. It is seen that the connected solar PV units with appropriate control are able to reduce the severity of the voltage swell, especially for higher penetration levels of solar PV considered, but not entirely eliminate it.
AB - Unbalanced faults in distribution feeders can impact voltages on the non-faulted phases. This paper models a real-life feeder with a high penetration level of solar photovoltaic (PV) units in detail including the secondary circuits, and shows a large voltage swell in one of the non-faulted phases of the feeder during a single line to ground fault. The voltages seen during this swell are more than 1.2 p.u., which can have detrimental impacts on the connected equipment and can also lead to loss of connected generation. The reason for this voltage swell is found to be the equivalent impedance at the fault location resulting from the ratio of zero and positive sequence cable impedances. It is seen that the connected solar PV units with appropriate control are able to reduce the severity of the voltage swell, especially for higher penetration levels of solar PV considered, but not entirely eliminate it.
KW - distributed power generation
KW - distribution systems
KW - feeder modeling
KW - power system faults
KW - voltage swells
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U2 - 10.1109/PESGM48719.2022.9916858
DO - 10.1109/PESGM48719.2022.9916858
M3 - Conference contribution
AN - SCOPUS:85141442997
T3 - IEEE Power and Energy Society General Meeting
BT - 2022 IEEE Power and Energy Society General Meeting, PESGM 2022
PB - IEEE Computer Society
T2 - 2022 IEEE Power and Energy Society General Meeting, PESGM 2022
Y2 - 17 July 2022 through 21 July 2022
ER -