TY - GEN
T1 - Identification of Power Islands via Event-Triggered Decaying Current Injection by Inverter Networks
AU - Kumar, Avinash
AU - Lin, Yuzhang
AU - Lu, Xiaonan
N1 - Publisher Copyright:
© 2023 IEEE.
PY - 2023
Y1 - 2023
N2 - Conventional islanding detection methods only determine whether an Inverter-Based Resource (IBR) is islanded to activate anti-islanding protection. In order to form microgrids for sustainable power islands, it is critical to identify the boundaries of islands such that the IBRs in the same island could be coordinated by microgrid secondary control. This paper proposes an islanding identification method that can agilely determine the boundaries of power islands following islanding events. A controlled low-frequency decaying current is injected into the grid via the dq frame current controllers of IBRs, and the Estimation of Signal Parameters via Rotational Invariance Technique (ESPRIT) method is used to extract signals from measurements at the terminals of other IBRs. If the signal injected by an IBR is observed at the terminal of another IBR, it is determined that they are electrically connected, i.e., operated in the same island. The proposed method minimizes the impact on power quality and grid operation with the event-triggered and rapidly decaying signal injection mechanisms. The proposed framework is verified in the IEEE 13-node test feeder.
AB - Conventional islanding detection methods only determine whether an Inverter-Based Resource (IBR) is islanded to activate anti-islanding protection. In order to form microgrids for sustainable power islands, it is critical to identify the boundaries of islands such that the IBRs in the same island could be coordinated by microgrid secondary control. This paper proposes an islanding identification method that can agilely determine the boundaries of power islands following islanding events. A controlled low-frequency decaying current is injected into the grid via the dq frame current controllers of IBRs, and the Estimation of Signal Parameters via Rotational Invariance Technique (ESPRIT) method is used to extract signals from measurements at the terminals of other IBRs. If the signal injected by an IBR is observed at the terminal of another IBR, it is determined that they are electrically connected, i.e., operated in the same island. The proposed method minimizes the impact on power quality and grid operation with the event-triggered and rapidly decaying signal injection mechanisms. The proposed framework is verified in the IEEE 13-node test feeder.
KW - Inverter based resources
KW - islanding
KW - microgrid
KW - resilience
UR - http://www.scopus.com/inward/record.url?scp=85174697964&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85174697964&partnerID=8YFLogxK
U2 - 10.1109/PESGM52003.2023.10253294
DO - 10.1109/PESGM52003.2023.10253294
M3 - Conference contribution
AN - SCOPUS:85174697964
T3 - IEEE Power and Energy Society General Meeting
BT - 2023 IEEE Power and Energy Society General Meeting, PESGM 2023
PB - IEEE Computer Society
T2 - 2023 IEEE Power and Energy Society General Meeting, PESGM 2023
Y2 - 16 July 2023 through 20 July 2023
ER -