Hybrid shifted frequency analysis-electromagnetic transients multirate simulation of power systems
department or school: Applied Science, Faculty of
department or school: Electrical and Computer Engineering, Department of
data provider: DSpace
degree campus: UBCV
creator: Tarazona Gomez, Javier Orlando
issued: 2023-04-12T17:18:19Z
issued: 2023
related degree: Doctor of Philosophy - PhD
degree grantor: University of British Columbia
description: Traditional power systems have high inertia, and disturbances can be represented with relatively large discretization steps. However, power electronic interfaced generation requires time steps, at least two orders of magnitude smaller to represent the switching operations. In addition, the increased penetration of these devices reduces the total inertia of the system, and a single-time step size transient stability (TS) solution that considers the details of the power electronic devices would take two orders of magnitude longer (that is, electromagnetic transients (EMT) simulators time step sizes). Hybrid TS-EMT simulators aim at using large time steps for the traditional (slow) part of the system and small time steps for the power electronic devices. However, in the current state-of-the-art, the proposed hybrid solutions are limited in a number of ways. Most of them introduce a one TS time step interfacing delay between solutions, which reduces accuracy and can create numerical oscillations. Other approaches use the travelling time of transmission lines to tear the system and interface the solutions, but this limits the flexibility of connecting power electronic components anywhere in the system. The hybrid solution presented in this work combines a Shifted Frequency Analysis (SFA) solution that is more accurate than traditional phasor solutions to follow transient stability trajectories in lower inertia systems with the traditional EMT solution for the fast power electronic converters. In order to interface the SFA and EMT solutions, a new hybrid protocol has been developed that overcomes the disadvantages of the current hybrid solutions. The two subsystems are joined using the Multi-Area Thévenin Equivalent (MATE) solution framework, and introducing the novel concept of employing a second parallel EMT simulation. Illustrative examples demonstrate the validity and accuracy of the SFA-EMT multirate protocol. The new protocol achieves significant computational savin…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/84171
note: HYBRID SHIFTED FREQUENCY ANALYSIS-ELECTROMAGNETIC TRANSIENTS MULTIRATE SIMULATION OF POWER SYSTEMS by Javier Orlando Tarazona Gomez B.Eng., Universidad Central de Venezuela, 1986 M.Sc., University of Manchester, 1990 A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY in THE FACULTY OF GRADUATE AND POSTDOCTORAL STUDIES (Electrical and Computer Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Vancouver) April 2023 © Javier Orlando Tarazona Gomez, 2023 ii The following individuals certify that they have read, and recommend to the Faculty of Graduate and Postdoctoral Studies for acceptance, the dissertation entitled: Hybrid Shifted Frequency Analysis-Electromagnetic Transients Multirate Simulation of Power Systems submitted by Javier Orlando Tarazona Gomez in partial fulfillment of the requirements for the degree of Doctor of Philosophy in Electrical and Computer Engineering Examining Committee: José R. Martí, Professor, Electrical and Computer Engineering, UBC Supervisor Hermann Dommel, Professor, Electrical and Computer Engineering, UBC Supervisory Committee Member Juri Jatskevich, Professor, Electrical and Computer Engineering, UBC Supervisory Committee Member Zhen Jane Wang, Professor, Electrical and Computer Engineering, UBC University Examiner Ryozo Nagamune, Professor, Mechanical Engineering, UBC University Examiner iii Abstract Traditional power systems have high inertia, and disturbances can be represented with relatively large discretization steps. However, power electronic interfaced generation requires time steps, at least two orders of magnitude smaller to represent the switching operations. In addition, the increased penetration of these devices reduces the total inertia of the system, and a single-time step size transient stability (TS) solution that considers the details of the power electronic devices would take two orders of magnitude longer (that is, electromagnetic transients (EMT) simulators time ste…
has type: Thesis/Dissertation
date issued: 2023-05
is shown at: 10.14288/1.0430545
language: eng
degree discipline: Electrical and Computer Engineering
provider: Vancouver : University of British Columbia Library
publisher: University of British Columbia
rights: Attribution-NonCommercial-NoDerivatives 4.0 International
rights URI: http://creativecommons.org/licenses/by-nc-nd/4.0/
scholar level: Graduate
contributor: Martí, José R.
type: Text
identifier URI: http://hdl.handle.net/2429/84171