A Bargaining Approach to Optimizing Load Shedding in Islanded Microgrid Operation

Abstract

A microgrid is an emerging frontier in meeting the challenges in providing reliable power supply in a small community. Microgrid operation is one of important topics of a microgrid. The goal of microgrid operation is to maintain a power balance as a critical requirement. In islanded operation mode of a microgrid, when the power imbalance is occurred by supply shortage, a load shedding is generally used. For a reasonable and fair load shedding, some game theoretic approaches have been proposed. The load-shedding schemes consider a load uses a continuous range of values to present its load demand. However, in reality, some loads use integer and discrete values and it decreases the power utilization. In this paper, we define a load-shedding problem with consideration of the discrete characteristic of load demands. To solve the load-shedding problem, we employ a game theoretic approach. In order to show the functionality and performance of our load-shedding scheme, we implement a microgrid operation system by using our scheme.