Geometric Analysis of Asymmetrical Fault Synthesis for Three-Phase Transformer Connections Using Computer Simulation
School Name
South Carolina Governor's School for Science & Mathematics
Grade Level
12th Grade
Presentation Topic
Engineering
Presentation Type
Mentored
Abstract
Within a simulated grid environment various voltage and frequency conditions were applied to a device under test (DUT) to examine its performance. By using the Line to Line and Line to Neutral Voltages and transformer relationship equations, a derivation for the grid side voltage required to induce both a single and double phase sag on the DUT was produced. A total of 18 derivations were produced and subsequently used in a MATLAB/SIMULINK simulation to observe trends that appear in each transformer connection and type of sag. Trends that appeared in the data collected include but are not limited to the Vrms and phase angle changes from LL to LN voltages. These trends support the concept of three phase balanced sag and other preliminary models. Additionally, these trends allow for the classification of the transformer connections under both single and double phase fault conditions. This work allows for a better understanding of three-phase transformer connections and the characteristics of faults across them.
Recommended Citation
Daly, Nicholas, "Geometric Analysis of Asymmetrical Fault Synthesis for Three-Phase Transformer Connections Using Computer Simulation" (2019). South Carolina Junior Academy of Science. 103.
https://scholarexchange.furman.edu/scjas/2019/all/103
Location
Founders Hall 250 B
Start Date
3-30-2019 9:15 AM
Presentation Format
Oral Only
Group Project
No
Geometric Analysis of Asymmetrical Fault Synthesis for Three-Phase Transformer Connections Using Computer Simulation
Founders Hall 250 B
Within a simulated grid environment various voltage and frequency conditions were applied to a device under test (DUT) to examine its performance. By using the Line to Line and Line to Neutral Voltages and transformer relationship equations, a derivation for the grid side voltage required to induce both a single and double phase sag on the DUT was produced. A total of 18 derivations were produced and subsequently used in a MATLAB/SIMULINK simulation to observe trends that appear in each transformer connection and type of sag. Trends that appeared in the data collected include but are not limited to the Vrms and phase angle changes from LL to LN voltages. These trends support the concept of three phase balanced sag and other preliminary models. Additionally, these trends allow for the classification of the transformer connections under both single and double phase fault conditions. This work allows for a better understanding of three-phase transformer connections and the characteristics of faults across them.
