TY - GEN
T1 - Sensitivity of commercial rooftop photovoltaic inverters to grid voltage swell
AU - Dehghani Tafti, Hossein
AU - Ahmad, Awais
AU - Callegaro, Leonardo
AU - Konstantinou, Georgios
AU - Fletcher, John E.
PY - 2021
Y1 - 2021
N2 - The ever-increasing electricity generation from rooftop photovoltaic (PV) systems, also known as distributed PV (DPV), leads to new challenges for transmission and distribution network service providers. DPV lacks visibility and control from system operators, and this issue becomes critical especially during and after grid contingencies. Technical standards applicable to DPV inverters define expected performance and behavior, however they do not always provide clear guidelines under several grid disturbance conditions. On the one hand, inverters are allowed to respond flexibly. However, knowledge of inverters behavior under grid voltage disturbances is necessary to design and tune the parameters of composite load models, used by power system operators in planning the required power reserve. This article investigates through experiments the sensitivity and behavior of 25 off-the-shelf residential DPV inverters under grid voltage swells. Inverters are found to behave in either of these ways: 1) Ride-through, 2) curtail power, and 3) disconnect. Power curtailment or disconnection under such disturbances can have a detrimental impact on power system security. Accordingly, power system operators should schedule enough power reserves or take other appropriate measures.
AB - The ever-increasing electricity generation from rooftop photovoltaic (PV) systems, also known as distributed PV (DPV), leads to new challenges for transmission and distribution network service providers. DPV lacks visibility and control from system operators, and this issue becomes critical especially during and after grid contingencies. Technical standards applicable to DPV inverters define expected performance and behavior, however they do not always provide clear guidelines under several grid disturbance conditions. On the one hand, inverters are allowed to respond flexibly. However, knowledge of inverters behavior under grid voltage disturbances is necessary to design and tune the parameters of composite load models, used by power system operators in planning the required power reserve. This article investigates through experiments the sensitivity and behavior of 25 off-the-shelf residential DPV inverters under grid voltage swells. Inverters are found to behave in either of these ways: 1) Ride-through, 2) curtail power, and 3) disconnect. Power curtailment or disconnection under such disturbances can have a detrimental impact on power system security. Accordingly, power system operators should schedule enough power reserves or take other appropriate measures.
UR - http://www.scopus.com/inward/record.url?scp=85114202192&partnerID=8YFLogxK
U2 - 10.1109/ECCE-Asia49820.2021.9479029
DO - 10.1109/ECCE-Asia49820.2021.9479029
M3 - Conference proceeding contribution
AN - SCOPUS:85114202192
SN - 9781728163451
SP - 308
EP - 313
BT - Proceedings of the Energy Conversion Congress and Exposition - Asia, 2021 (ECCE Asia 2021)
PB - Institute of Electrical and Electronics Engineers (IEEE)
CY - Piscataway, NJ
T2 - 12th IEEE Energy Conversion Congress and Exposition - Asia, ECCE Asia 2021
Y2 - 24 May 2021 through 27 May 2021
ER -