풍력 복합발전 시스템을 위한 멀티에이전트 제어

Abstract

This thesis is devoted to study on multi-agent control of small-decentralized wind hybrid power systems. The main subjects are the modeling, multi-agent control, and simulation study. The main contribution of the modeling work is the development of component models for a flexible simulation tool that enables analysis of various wind hybrid system configurations. The component models are developed at an equal level of complexity, which are appropriate for multi-agent control. The models should be accurate enough to predict power quality in terms of bus voltage and (bus) frequency deviations. The proposed model framework is flexible, and can easily be extended to represent a general electrical network topology, and to include other renewable energy sources. The design of multi-agent control is a development of a new type of the hybrid control that is made up of diesel, battery, and dumpload. This contributes an optimization approach for finding the optimal operations that are usually chosen by trial and error. In the simulation studies, five different modes of operations of the wind hybrid power system are performed: wind-diesel mode, wind-battery storage mode, wind-dumpload mode, wind-battery storage mode with the dumpload considering battery charging speed, and wind-diesel mode with the dumpload