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Title:
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Load flow study and transient stability study of a multi-machine system using STATCOM
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Author:
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Yerramilli, Surya
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Abstract:
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In this modern age the power system is becoming increasingly large and much more complicated in its operation. Maintaining synchronism between various parts of power system is becoming cumbersome process, which arises stability problems in power system operations. It’s been made mandatory to consider the stability aspects. Power system operators should consider not only economic load dispatch but also stability aspects which are most essential.
The load flow and the transient stability studies constitute the major analytical approach to the study of power system and its electromechanical dynamic behavior. These studies are carried out by numerical iterative methods, which give accurate results and can be used for any degree of modeling sophistication.
In this project the Optimal Power flow and the classical model of the synchronous machine are used to study the stability of the power system with and without incorporating FACTS devices. A flexible alternating current transmission system
v
(FACTS) is a power electronic based system and other static equipment that provide control of one or more AC transmission system parameters to enhance controllability and increase power transfer capability [27]. With the help of FACT devices, the Power system Performance can be improved, without any generation rescheduling or topology changes. Moreover with the use of FACTS device in the system, the line flows can be changed in such a way that thermal limits are not exceeded with losses minimized and stability margins increased and even contractual requirements can be fulfilled without violating economic dispatch. The impact of STATCOM on Optimal power flow and transient stability will be studied in this project.
For transient stability studies the classical model is considered in this project. It is the simplest modeling used in the power system dynamics and requires minimum amount of data and these studies can be conducted in a relatively short interval of time at minimum cost. Further these classical studies can be provided for useful online information. |
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Description:
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Project (M.S., Electrical and Electronic Engineering)-- California State University, Sacramento, 2009. |
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URI:
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http://hdl.handle.net/10211.9/237
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Date:
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2010-07-07 |
