Modeling and simulation of selected distributed generation sources and their assessment

Abstract

MODELING AND SIMULATION OF SELECTED DISTRIBUTED GENERATION SOURCES AND THEIR ASSESSMENT By Ju-chirl Park Consumers want an economical and uninterrupted electric power. It is crucial to the industrial consumers and wholesalers who have to pay the penalty for a blackout, if power is disconnected for any reason. Recently, distributed generation (DG) has become an attractive method of providing electricity to consumers and retailers. In addition, from the viewpoint of economic feasibility, the costs of installing the generators and producing the electricity can be comparatively inexpensive using the DG method. Furthermore, electrical or thermal efficiency can also be improved if the utilities use co-generation or a combined heat cycle. In this thesis, the models of small turbine generators (i.e. a combustion turbine, a diesel engine, etc), that are used for distributed generation will be obtained as dynamic. Also, the detailed synchronous machine and the excitation system model are obtained for the standard simulation. The simulation will be performed with an infinite bus system model. The synchronous machine is connected with a local load in order to develop the terminal voltage, avoiding the differentiation. In order to use fuel cells and solar cells, which are new forms of technology, have the potential to reduce costs, and can be used for the DG in the near future, the inverter (DC-AC) model is necessary. In this thesis, the power delivered to voltage sources is examined with the DC current.

A General Overview of Combined Cycle Gas Turbine Plants

“…Recently, a dynamic model for hybrid gas turbine and wind turbine system has been developed by Tsoutsanis and Meskin [112] in order to design a controller and optimize its operation in hybrid mode. Park [113] has also developed a hybrid dynamic model of a distributed energy system. Similarly, Kong and Kim [114] have focused on performance optimization and controller design of a turbojet engine.…”

Modeling and Simulation of an Operating Gas Turbine Using Modelica Language

“…Modelica is an object-oriented language for modeling various and large, complex systems. It is suitable for multidomain modeling, for instance, automotive, mechatronic models, robotics, and aerospace applications involving mechanical, electrical, hydraulic control, and state machine subsystems [5].…”

“…The object-orientation concepts enable an easy adaptation of the behavior and properties of an existing system in different contexts. These concepts are the foundation of the Modelica language [3][4][5]. Using knowledge of experts in the domain, encoded in simulation tools and libraries with different levels of details, to build models that closely reflect the actual behavior of the system is the main principle of Modelica language [3][4][5].…”

“…These concepts are the foundation of the Modelica language [3][4][5]. Using knowledge of experts in the domain, encoded in simulation tools and libraries with different levels of details, to build models that closely reflect the actual behavior of the system is the main principle of Modelica language [3][4][5]. In this article, the Modelica language concept will be presented, followed by a citation of the main objectives of the Modelica tool.…”

Transient Behavior in Variable Geometry Industrial Gas Turbines: A Comprehensive Overview of Pertinent Modeling Techniques

“…Recently, Tsoutsanis and Meskin [ 23 ] have developed a dynamic model for hybrid gas turbine and wind turbine system in order to design a controller and optimize the operation in hybrid mode. Similarly, Park [ 24 ] has also developed a hybrid dynamic model of a distributed energy system having small gas turbine, diesel engine, fuel cell, solar source and synchronous machine. Several other researchers have established dynamic models for design of controller and effective control strategy for actuation of VIGVs and fuel valves [ 25 , 26 , 27 , 28 , 29 , 30 , 31 ].…”