TY - GEN
T1 - Power quality and voltage profile analyses of high penetration grid-tied photovoltaics
T2 - 2017 IEEE Industry Applications Society Annual Meeting, IAS 2017
AU - Anzalchi, Arash
AU - Sundararajan, Aditya
AU - Moghadasi, Amir
AU - Sarwat, Arif
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/11/8
Y1 - 2017/11/8
N2 - Installed Photovoltaic (PV) capacity across the smart distribution grid has been on the rise in order to reduce greenhouse gas emissions. However, under high penetration of PV, there could be potential impacts on the operation and planning of distribution networks. In order to evaluate the impacts of grid-tied PV, a case study on power quality and voltage profile analyses is conducted using a 1.1 MW AC grid-tied PV power plant located at Florida International University. As part of the power quality analysis, study explores Total Harmonic Distortion (THD) and high power and high energy ramp rate analysis. Current THD is posed to trigger problems when generation is highly intermittent wherein Voltage THD does not have a tight relationship with power output. For voltage profile analysis, the case study considers peak and minimum daytime load scenarios under different levels of penetration, including the existing level, and appraises the plant's current and potential impacts in steadystate and time-series scenarios. The effect of using smart inverters with grid-support functions is also simulated. Results show that some major problems like voltage deviations and feeder losses can be expected at 60% PV penetration in minimum daytime load. The number of switching operations for voltage regulators also increase when smart inverters operate at Volt/VAr control mode. Results of the case study are discussed to highlight the significance of these issues in high penetration scenarios.
AB - Installed Photovoltaic (PV) capacity across the smart distribution grid has been on the rise in order to reduce greenhouse gas emissions. However, under high penetration of PV, there could be potential impacts on the operation and planning of distribution networks. In order to evaluate the impacts of grid-tied PV, a case study on power quality and voltage profile analyses is conducted using a 1.1 MW AC grid-tied PV power plant located at Florida International University. As part of the power quality analysis, study explores Total Harmonic Distortion (THD) and high power and high energy ramp rate analysis. Current THD is posed to trigger problems when generation is highly intermittent wherein Voltage THD does not have a tight relationship with power output. For voltage profile analysis, the case study considers peak and minimum daytime load scenarios under different levels of penetration, including the existing level, and appraises the plant's current and potential impacts in steadystate and time-series scenarios. The effect of using smart inverters with grid-support functions is also simulated. Results show that some major problems like voltage deviations and feeder losses can be expected at 60% PV penetration in minimum daytime load. The number of switching operations for voltage regulators also increase when smart inverters operate at Volt/VAr control mode. Results of the case study are discussed to highlight the significance of these issues in high penetration scenarios.
KW - High penetration PV
KW - Overvoltage
KW - Power quality
KW - Smart distribution grid
KW - Total harmonic distortion (THD)
UR - https://www.scopus.com/pages/publications/85044155070
U2 - 10.1109/IAS.2017.8101854
DO - 10.1109/IAS.2017.8101854
M3 - Conference contribution
AN - SCOPUS:85044155070
T3 - 2017 IEEE Industry Applications Society Annual Meeting, IAS 2017
SP - 1
EP - 8
BT - 2017 IEEE Industry Applications Society Annual Meeting, IAS 2017
PB - Institute of Electrical and Electronics Engineers Inc.
Y2 - 1 October 2017 through 5 October 2017
ER -