Degree Type
Thesis
Date of Award
2017
Degree Name
Master of Science
Department
Electrical and Computer Engineering
Major
Electrical Engineering
First Advisor
Ian Dobson
Abstract
Synchrophasors are especially useful for wide area monitoring, state estimation, and various
other applications. Hence, electric utilities are installing these synchrophasors in their areas. Power
transfer through these areas stresses the system whenever there are outages inside the area. When
state estimator fails to converge, a fast indication of the amount of stress inside the area is necessary
whenever there are multiple outages in the area. We use the synchrophasor angle measurements at
the border buses of an area to calculate area angle which indicates the stress inside the area. The
operator can use this indication to take necessary actions. The area angle is a scalar measure of
power system area stress that responds to line outages within the area and is a weighted combination
of synchrophasor measurements of voltage angles around the border of the area. The area angle
has previously been tested in a transfer path areas on a reduced model. In this thesis, we further
explore and test this concept on a detailed western interconnection model. Working on a detailed
model has computational challenges. We explain techniques to achieve the computational efficiency.
We also design new power system areas to extend the fast synchrophasor monitoring of multiple
overloads with area angles. The new areas have loads in the middle of the area supplied by power
flows into the area along its outer border. We examine setting actionable thresholds for curtailing
area transfers when there are multiple outages and the robustness of the method to the pattern of
stress.
DOI
https://doi.org/10.31274/etd-180810-5959
Copyright Owner
Vikram Kumar Reddy Chiluka
Copyright Date
2018
Language
en
File Format
application/pdf
File Size
43 pages
Recommended Citation
Chiluka, Vikram Kumar Reddy, "Threshold-based synchrophasor monitoring of multiple outages on a detailed WECC system using area angle" (2017). Graduate Theses and Dissertations. 16329.
https://lib.dr.iastate.edu/etd/16329