Voltage sag cost assessment based on power flow reduction and non supplied energy

Most of the research to estimate voltage sags cost was based on the end-user side. However in many cases there is not enough information to carry out the cost calculation based on the specific end-user losses. Therefore, utilities must have an alternative method to quantify costs due to voltage sags. This paper introduces the estimation of voltage sags cost based on the momentary reduction of the power flow and the non supplied energy. A case study based on actual measurements shows the applicability of the proposed method.