Optimal Schedule of Distributed Generation in a Grid-Tied Micro-grid via Minimum Incremental Cost Approach

Abstract

Abstract-This paper proposed a simple and efficient approach, minimum incremental cost approach (MICA), for the optimal schedule in a grid-tied micro-grid (MG) with various types of distributed generation (DG). The fuel costs generated by these DGs are determined using quadratic and linear functions dependent on the types of DGs. The proposed approach, MICA, is able to handle several inequality constraints without introducing any multipliers and furthermore it can solve the non-derivative problems or the fuel cost functions being much more complicated. Accordingly, the MICA is proposed for determining the optimal schedule of MGs with various types of DG to minimize generation costs under grid-tied operation. Results demonstrate that the proposed MICA is a simple approach to determining the optimal schedule in MGs with various types of DG.