Campus Units
Electrical and Computer Engineering
Document Type
Article
Publication Version
Submitted Manuscript
Publication Date
5-2016
Journal or Book Title
IEEE Transactions on Power Systems
Volume
31
Issue
3
First Page
2116
Last Page
2124
DOI
10.1109/TPWRS.2015.2454517
Abstract
When power grids are heavily stressed with a bulk power transfer, it is useful to have a fast indication of the increased stress when multiple line outages occur. Reducing the bulk power transfer when the outages are severe could forestall further cascading of the outages. We show that synchrophasor measurements of voltage angles at all the area tie lines can be used to indicate the severity of multiple outages. These synchrophasor measurements are readily combined into an “area angle” that can quickly track the severity of multiple outages after they occur. We present a procedure to define thresholds for the area angle that relate to the maximum power that can be transferred through the area until a line limit is reached. Then in real time we would monitor the area angle and compare it to the thresholds when line outages occur to determine the urgency (or not) of actions to reduce the bulk transfer of power through the area. The procedure also identifies exceptional cases in which separate actions to resolve local power distribution problems are needed. We illustrate the thresholds and monitoring with the area angle across several states of Northwestern USA.
Rights
© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Copyright Owner
IEEE
Copyright Date
2015
Language
en
File Format
application/pdf
Recommended Citation
Darvishi, Atena and Dobson, Ian, "Threshold-Based Monitoring of Multiple Outages With PMU Measurements of Area Angle" (2016). Electrical and Computer Engineering Publications. 143.
https://lib.dr.iastate.edu/ece_pubs/143
Comments
This is a manuscript of an article published as Darvishi, Atena, and Ian Dobson. "Threshold-based monitoring of multiple outages with PMU measurements of area angle." IEEE Transactions on Power Systems 31, no. 3 (2016): 2116-2124. doi: 10.1109/TPWRS.2015.2454517. Posted with permission.