Title page for ETD etd-04182009-041143
|Type of Document
||The application of phasor measurements for adaptive protection and control
||Master of Science
|Phadke, Arun G.
|De La Ree Lopez, Jaime
|Mili, Lamine M.
|Date of Defense
This thesis describes an adaptive protection scheme that performs the collection of the voltage and
current phasors during post-fault period, tracking the power swing phenomena, identifying the onset
of instability, and then issuing a stabilizing command. In this work, the protection system is to
maintain the reliability! ensure the secure operation, and prevent total collapse of the power system.
The work is based upon methods of clustering for meter placement in a bulk power system, and
selecting the pilot points for installing the phasor measurement units (PMU) to measure the bus
voltage phasors and associated branch current phasors. According to the network law, fast calculation
of state estimation can be made from these measurements. Because the on-line assessment
of transient stability has to provide a quick and approximate result, the direct method which determines
stability without explicit integration techniques is applicable in this study.
The results of the system stability prediction in real-time by digital computer simulation under
stable and unstable operating conditions are presented.
|| Approximate Download Time
| 28.8 Modem
|| 56K Modem
|| ISDN (64 Kb)
|| ISDN (128 Kb)
|| Higher-speed Access
next to an author's name indicates that all
files or directories associated with their ETD
are accessible from the Virginia Tech campus network only.
If you have questions or technical
problems, please Contact DLA.