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Dynamic System Reduction And Fault Location Identification Using Synchrophasors

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Dynamic System Reduction And Fault Location Identification Using Synchrophasors

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Title: Dynamic System Reduction And Fault Location Identification Using Synchrophasors
Author: Nashawati, Eithar
Abstract: The advent of the synchronized phasor measurement units' technology allow for new applications to the power systems and improvement of existing applications. This dissertation presents a new method for synchrophasor-assisted fault location. An initial screening of voltage phase angle swing determines the suspect part of the system where the disturbance occurred. The system is then reduced to a limited number of buses. A Positive-sequence voltage-only method is then used to provide a better estimation of the exact location of the fault using particle swarm optimization. This method is applied to a large power system in North Texas. Real-time synchrophasor measurement units are used from across the power system to identify the fault location. Results are compared to traditional fault location methods that utilize non-synchronized current measurements to locate faults. Several cases are examined and results show accurate estimation of the fault location by using the proposed approach.
URI: http://hdl.handle.net/10106/11149
Date: 2012-07-25

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