Dynamic model of wind power balancing in hybrid power system

Abstract

The paper presents a dynamic model of a hybrid power system composed of a wind park, a diesel generator, and an electrochemical energy storage system. The purpose of conventional generating units and energy storage equipment in the hybrid power system is the balancing of uctuating power generated by renewable energy sources as well as an increase in supplied power quality. The composed dynamic model describes characteristics of the power governor of the diesel generator and dynamic behavior of the energy storage system based on a vanadium redox battery. Simulations are based on sampled data of real wind park power installed in the Lithuanian power system. The effectiveness of wind park power balancing while using different capacities of diesel generator and electrochemical energy storage system is investigated. Optimal capacities of the balancing equipment are estimated.