Voltage control of three phase distribution systems with minimum cost

Abstract

Prevention of voltage rise under minimum cost in distribution networks with high PV penetration is considered in this study. On load tap changing (OLTC) transformer and PV inverters are used as controllable devices. The actual cost minimization of transformer tap change, inverter curtailment and line losses is considered as the objective of the optimization problem. Sequential use of mixed integer second order cone (MISOCP) program is used as the optimization technique. Simulations results demonstrate the capability of voltage regulation under minimum cost. Exactness of the generated solutions are validated after comparison with load flow.