Date of Award

12-2024

Degree Type

Thesis

Degree Name

M.S.E.

Degree Program

Electrical Engineering

Department

Electrical Engineering

Major Professor

Dr. Parviz Rastgoufard

Second Advisor

Dr. Ebrahim Amiri

Third Advisor

Dr. Dimitrios Charalampidis

Fourth Advisor

Dr. Abdul Rahman Alsamman

Abstract

This thesis explores the importance of inertia in the power grid traditionally provided by the rotating machines and as the penetration of the Inverter Based Resources (IBRs) increases in the grid, it brings new obstacles regarding grid reliability and stability. An advanced form of inverter (Grid-Forming type) has been compared with the conventional inverter type (Grid-Following) in an Electromagnetic Transient Software (PSCAD) under three scenarios where the system’s inertia is reduced to 50%, 25%, and 12.5%, with faults applied at three different locations: PV Point of Interconnection (POI), one bus away from PV POI, and the synchronous generator bus. Furthermore, the GFL and GFM inverters are compared in a test system set-up using PMView, an IBR model review platform developed by ERCOT, in low Short Circuit Ratio (SCR) systems in which the SCR value is gradually decreased from a value of 10 up to an SCR value of 1.5. The results indicate that the GFM inverter model offers a faster fault recovery response with better system performance in low inertia power system. It is also observed that while the GFL inverter model is stable up to an SCR value to 2.5, the GFM model performs well even at a low SCR value of 1.5.

Rights

The University of New Orleans and its agents retain the non-exclusive license to archive and make accessible this dissertation or thesis in whole or in part in all forms of media, now or hereafter known. The author retains all other ownership rights to the copyright of the thesis or dissertation.

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Available for download on Sunday, November 14, 2027

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