Problems of Electric Power Systems Flexibility: Definitions and Measures

Abstract

The paper focuses on flexibility as a new property of electric power systems (EPSs). The definitions of EPS flexibility are analyzed. The enhancement of the flexibility of generation, network, load, protection and control systems is considered as measures to provide EPS flexibility. Current trends in changes in EPS flexibility are discussed. The necessity of a comprehensive study on negative and positive factors to increase EPS flexibility is emphasized.