july/august 2021 ieee power & energy magazine 37 -1.8052 -1.8683 -1.9315 -1.9946 -2.0578 -2.1209 10.000 10.167 10.333 10.500 (h) 10.667 10.833 11.000 Feeder-Head Active Power (Phase A) Feeder-Head Active Power (Phase B) Feeder-Head Active Power (Phase C) (a) 1.07 1.05 1.03 1.01 0.99 0.97 Optimization Y = 1.050 p.u. 1.03 1.01 0.99 10.000 10.167 10.333 10.500 10.667 10.833 11.000 Y = 0.975 p.u. (h) (c) Y = 0.975 p.u. 0.97 10.000 10.167 10.333 10.500 10.667 (h) (d) 10.833 11.000 1.05 After Applying RMT Controls 2.0000 1.2000 0.4000 -0.4000 -1.2000 -2.0000 10.351 h 1.000 Y = 0.000 10.172 h -1.000 10.675 h -1.200 10.000 10.167 10.333 10.500 10.667 10.833 11.000 (h) Feeder-Head Active Power (Phase A) Feeder-Head Active Power (Phase B) Feeder-Head Active Power (Phase C) RMT Lower Limit RMT Setpoint RMT Upper Limit (b) Y = 1.050 p.u. figure 10. The simulation results before and after running the DER optimization algorithm. The feeder-head active power (a) following the load and PV irradiance and (b) following the RMT setpoints. (c) The overvoltage in most of the buses and (d) the mitigated overvoltage issues. RMT: Reserve magnitude target. (MW) Voltage (p.u.) Voltage (p.u.)