Determination method of Volt-Var and Volt-Watt curve for smart inverters applying optimization of active/reactive power allocation for each inverter

Abstract

In recent years, the smart inverter that is an advanced inverter has been investigated as a solution to voltage problem in the distribution network in which a lot of photovoltaic(PV)s are introduced Among multiple functions of the smart inverter, voltage-reactive power control (Volt-Var) and voltage-active power control (Volt-Watt) have been attracted attention because of their effectiveness. However, the problem is how to determine optimal curves setting of Volt-Var and Volt-Watt. In this paper, we suggest the determination method of optimal Volt-Var and Volt-Watt curves, and verify the effectiveness of the optimal curves on distribution network.