Integrated Voltage and Var optimization process for a distribution system

摘要

The method determines the optimal settings for the controllable taps u_t of voltage regulating transformers and the capacitor bank switches u_c in a distribution network. Var optimization is calculated with the controllable tap settings u_t fixed at an initial value, or the best value found so far, to output an optimized set of control settings u_c. Voltage optimization is calculated with the control settings u_c fixed at the best solution found so far, to output an optimal set of control settings u_t. Using an objective function, system performance is evaluated using the optimal set of control settings u_t and u_c and repeating the steps until either the control values u_t and u_c do not change from one iteration to the next, the objective function value does not change or if the new objective function value is greater than the last. The control values u_t and u_c are then output to a distribution control system.