TY - GEN
T1 - Secondary Frequency and Voltage Control in Microgrids with dVOC-Based Inverters
AU - Roberts, T.
AU - Dominguez-Garcia, A. D.
N1 - This work was supported in part by the U.S. DOE’s Office of Energy Efficiency and Renewable Energy under Agreement Number EE0009025.
PY - 2023
Y1 - 2023
N2 - In this paper, we address the problem of frequency and voltage control in microgrids in which generators and loads are interfaced via grid-forming (GFM) inverters. In our setting, the output voltage and frequency of the inverters is determined by a primary control scheme realized through a control strategy referred to as dispatchable virtual oscillator control (dVOC). This type of GFM primary control is known to stabilize system frequency and voltage magnitudes, but it is not capable of regulating them to their nominal values. To address this issue, we propose secondary frequency and voltage control schemes, both of which rely on integral control. The secondary frequency control scheme is centralized and similar in nature to that utilized in bulk power systems, whereas the secondary voltage control is completely decentralized. The operation of the proposed secondary frequency and voltage controls is illustrated via numerical simulations.
AB - In this paper, we address the problem of frequency and voltage control in microgrids in which generators and loads are interfaced via grid-forming (GFM) inverters. In our setting, the output voltage and frequency of the inverters is determined by a primary control scheme realized through a control strategy referred to as dispatchable virtual oscillator control (dVOC). This type of GFM primary control is known to stabilize system frequency and voltage magnitudes, but it is not capable of regulating them to their nominal values. To address this issue, we propose secondary frequency and voltage control schemes, both of which rely on integral control. The secondary frequency control scheme is centralized and similar in nature to that utilized in bulk power systems, whereas the secondary voltage control is completely decentralized. The operation of the proposed secondary frequency and voltage controls is illustrated via numerical simulations.
KW - Dispatchable Virtual Oscillator Control
KW - Frequency Control
KW - Grid Forming Inverter
KW - Voltage Control
UR - http://www.scopus.com/inward/record.url?scp=85179554793&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85179554793&partnerID=8YFLogxK
U2 - 10.1109/NAPS58826.2023.10318609
DO - 10.1109/NAPS58826.2023.10318609
M3 - Conference contribution
AN - SCOPUS:85179554793
T3 - 2023 North American Power Symposium, NAPS 2023
BT - 2023 North American Power Symposium, NAPS 2023
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2023 North American Power Symposium, NAPS 2023
Y2 - 15 October 2023 through 17 October 2023
ER -