Analysis on flexibility resources of Western Inner Mongolia power grid

Abstract

This paper defines the concept of flexibility in the power system as the ability of the individual components or the system itself to meet the net load changes and respond to power regulation demands. It then reviews the existing methods for evaluating flexibility and their classification, identifies the advantages and disadvantages of these methods, and provides a mathematical model for the flexible operation of the Western Inner Mongolia power grid. Based on the data provided by production units, the paper summarizes the output characteristics of various flexibility resources in the Western Inner Mongolia power grid, including the output curves of typical photovoltaic power stations, typical wind power plants, the overall load curve, typical regional load curves, and power transfer curves of three interconnecting busbars. It also studies the potential regulation capabilities of new energy sources, loads, and interconnecting lines. Finally, the paper evaluates the flexibility level of the Western Inner Mongolia power grid by drawing the net load curve, points out the shortcomings in flexibility in the construction of the new power system in the Western Inner Mongolia region, and provides corresponding suggestions.