*********************************
There is now a CONTENT FREEZE for Mercury while we switch to a new platform. It began on Friday, March 10 at 6pm and will end on Wednesday, March 15 at noon. No new content can be created during this time, but all material in the system as of the beginning of the freeze will be migrated to the new platform, including users and groups. Functionally the new site is identical to the old one. webteam@gatech.edu
*********************************
Title: Time Domain Analysis of the Impact of Geomagnetically Induced Current on Power System
Committee:
Dr. Meliopoulos, Advisor
Dr. Grijalva, Chair
Dr. Saaedifard
Abstract:
The objective of the proposed research is to develop a time domain analysis scheme for Geomagnetically Induced Current (GIC) analysis. Compared with existing methods which are based on simplified power flow, the time domain method is able to capture the transients during the onset and retreat of Geomagnetic Disturbance (GMD). It is also capable to precisely analyze the harmonic component resulting from saturations of iron cores in transformers and reactors. In this study, a detailed time domain analysis scheme is developed, which consists of frequency dependent circuit models, magnetic circuit models with nonlinear reluctance for iron core devices. This scheme is utilized to study several fundamental aspects during GMD events, including the harmonic spectrum of transformer current, the increase of reactive power consumption, and the instrumentation channel error due to DC offset.
