Please use this identifier to cite or link to this item: http://hdl.handle.net/10603/16352
Title: Power quality improvement in multi bus system using unified power flow controller
Researcher: Kannan P
Guide(s): Chenthur pandian S
Keywords: Electrical engineering
Flexible AC Transmission Systems
Unified power flow controller
Upload Date: 25-Feb-2014
University: Anna University
Completed Date: 01/11/2011
Abstract: The possibility of controlling power flow in electric system without any rescheduling and topological changes can improve the power system performances. It has been proved that, instead of building new transmission lines, an efficient usage of the existing line to their thermal limit is possible. Flexible AC Transmission Systems (FACTS), which are power electronic based devices, can change parameters like impedance, voltage and phase angle. Therefore they have the ability to control power flow pattern and enhance the usable capacity of the existing lines. The important feature of FACTS Technology is that they can vary the parameters rapidly and continuously, which will allow a desirable control of the system operation. The Unified Power Flow Controller (UPFC) is a Flexible AC Transmission Systems device used for improving the power quality in power systems. The UPFC consists of a combination of series device and shunt device, the DC terminals of which are connected to a common DC link capacitor. The series device acts as a controllable voltage source VC, whereas the shunt device acts as a controllable current source IC. The main purpose of the shunt device is to regulate the DC link voltage by adjusting the amount of active power drawn from the transmission line. In addition, the shunt device has the capability of controlling reactive power. This work deals with power quality improvement using UPFC. UPFC is capable of controlling real and reactive powers in a transmission system. The voltage compensation capability of UPFC depends on the maximum voltage that can be injected. Voltage injection using five level Voltage Source Inverter (VSI) based UPFC is proposed to enhance the voltage stability. The simulink models and simulation results of UPFC system employing multilevel inverter are presented. Pulse Width Modulation (PWM) based inverter and Space Vector Modulation (SVM) based inverter are proposed as a block in the UPFC system.
Pagination: xix, 126p.
URI: http://hdl.handle.net/10603/16352
Appears in Departments:Faculty of Electrical and Electronics Engineering

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01_title.pdfAttached File127.83 kBAdobe PDFView/Open
02_certificates.pdf2.99 MBAdobe PDFView/Open
03_abstract.pdf8.66 kBAdobe PDFView/Open
04_acknowledgement.pdf6.7 kBAdobe PDFView/Open
05_contents.pdf24.11 kBAdobe PDFView/Open
06_chapter 1.pdf35.98 kBAdobe PDFView/Open
07_chapter 2.pdf60.11 kBAdobe PDFView/Open
08_chapter 3.pdf437.65 kBAdobe PDFView/Open
09_chapter 4.pdf718.32 kBAdobe PDFView/Open
10_chapter 5.pdf427.26 kBAdobe PDFView/Open
11_chapter 6.pdf376.15 kBAdobe PDFView/Open
12_chapter 7.pdf9.88 kBAdobe PDFView/Open
13_appendix.pdf27.23 kBAdobe PDFView/Open
14_references.pdf21.94 kBAdobe PDFView/Open
15_publications.pdf6.05 kBAdobe PDFView/Open
16_vitae.pdf5.79 kBAdobe PDFView/Open


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