TY - GEN
T1 - Optimal coordinated EV charging with reactive power support in constrained distribution grids
AU - Paudyal, Sumit
AU - Ceylan, Oguzhan
AU - Bhattarai, Bishnu P.
AU - Myers, Kurt S.
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2018/1/29
Y1 - 2018/1/29
N2 - Electric vehicle (EV) charging/discharging can take place in any P-Q quadrants, which means EVs could support reactive power to the grid while charging the battery. In controlled charging schemes, distribution system operator (DSO) coordinates with the charging of EV fleets to ensure grid's operating constraints are not violated. In fact, this refers to DSO setting upper bounds on power limits for EV charging. In this work, we demonstrate that if EVs inject reactive power into the grid while charging, DSO could issue higher upper bounds on the active power limits for the EVs for the same set of grid constraints. We demonstrate the concept in a 33-node test feeder with 1,500 EVs. Case studies show that in constrained distribution grids, coordinated charging significantly reduces the average cost of EV charging if the charging takes place in the fourth P-Q quadrant compared to charging with unity power factor.
AB - Electric vehicle (EV) charging/discharging can take place in any P-Q quadrants, which means EVs could support reactive power to the grid while charging the battery. In controlled charging schemes, distribution system operator (DSO) coordinates with the charging of EV fleets to ensure grid's operating constraints are not violated. In fact, this refers to DSO setting upper bounds on power limits for EV charging. In this work, we demonstrate that if EVs inject reactive power into the grid while charging, DSO could issue higher upper bounds on the active power limits for the EVs for the same set of grid constraints. We demonstrate the concept in a 33-node test feeder with 1,500 EVs. Case studies show that in constrained distribution grids, coordinated charging significantly reduces the average cost of EV charging if the charging takes place in the fourth P-Q quadrant compared to charging with unity power factor.
KW - Demand response
KW - Distribution grid
KW - Electric vehicles
KW - Optimization
KW - Reactive power control
UR - https://www.scopus.com/pages/publications/85046346011
U2 - 10.1109/PESGM.2017.8274266
DO - 10.1109/PESGM.2017.8274266
M3 - Conference contribution
AN - SCOPUS:85046346011
T3 - IEEE Power and Energy Society General Meeting
SP - 1
EP - 5
BT - 2017 IEEE Power and Energy Society General Meeting, PESGM 2017
PB - IEEE Computer Society
T2 - 2017 IEEE Power and Energy Society General Meeting, PESGM 2017
Y2 - 16 July 2017 through 20 July 2017
ER -