An Efficient MILP Formulation of Economic Dispatch with Adjustable Transformer Ratio and Phase Shifter

TL;DR

This paper presents a linearized mixed-integer linear programming approach for economic dispatch that incorporates adjustable transformer ratios and phase shifters, improving computational efficiency and operational flexibility.

Contribution

It introduces a novel linearization technique for the nonlinear aspects of the problem, enabling more efficient and flexible power system operation modeling.

Findings

The proposed method effectively solves the economic dispatch problem with adjustable transformers.

Numerical results show improved computational efficiency over traditional methods.

The approach enhances operational flexibility in power systems.

Abstract

In this short paper, we study the economic dispatch with adjustable transformer ratio and phase shifter, both of which, along with the transmission line, are formulated into a generalized branch model. Resulted nonlinear parts are thereafter exactly linearized using the piecewise liner technique to make the derived ED problem computationally tractable. Numerical studies based on modified IEEE systems demonstrate the effectiveness of the proposed method to efficiency and flexibility of power system operation.