Incorporating high-impedance-fault detection functionality in distribution system online monitoring : an alternative to existing methods
department or school: Applied Science, Faculty of
department or school: Engineering, School of (Okanagan)
data provider: DSpace
degree campus: UBCO
creator: Tabakhpour Langeroudi, Adel
issued: 2021-01-28T17:55:03Z
issued: 2021
related degree: Master of Applied Science - MASc
degree grantor: University of British Columbia
description: The increasing deployment of informatics and communication systems in distribution systems (DS)s enables many desirable functionalities such as optimal control of distributed energy resources, online fault detection, online topology identification and energy theft detection. In this thesis, we focus on exploiting this emerging monitoring and control infrastructure to address high-impedance faults (HIF)s. HIFs have long been recognized as a serious protection issue in DSs, which can adversely impact the DS safety and protection as well as its operation and profitability. Trees contacting overhead lines and deteriorated insulators (due to cracks, dust, humidity, ice, etc.) are the main triggers of HIF in DSs. Once created, HIF imposes a large impedance between two phases or to the ground (through a third object like a tree or the utility poles). Given its high impedance value, HIF usually draws a relatively small current, less than the nominal load level, making it undetectable for relay protection systems. However, the persistent existence of HIF dissipates significant electric power on the long-term, which is undesirable for DS profitability and operation. More importantly, the existence of such HIFs presents weak points in the DS that can easily deteriorate to arcing faults, raising major safety concerns. Existing literature on HIF detection exploit the nonlinear and transient properties of the HIF current, which depends on the use of measurements with high sampling rates (several kHz to MHz) to enable the extraction of the features corresponding to the HIF by applying appropriate signal processing techniques. As such, these approaches demand high-resolution measurements, which are not necessarily economical or available for many distribution systems. On the other hand, today’s distribution systems are mostly equipped with other types of measurements that are far slower than those required by the existing HIF detection algorithms. These measurements are however tra…
aggregated CHO: https://circle.library.ubc.ca/rest/handle/2429/77211
note: Incorporating High-Impedance-Fault Detection Functionality in Distribution System Online Monitoring: An Alternative to Existing Methods by Adel Tabakhpour Langeroudi A THESIS SUBMITTED IN PARTIAL FULFILLMENT OF THE REQUIREMENTS FOR THE DEGREE OF MASTER OF APPLIED SCIENCE in THE COLLEGE OF GRADUATE STUDIES (Electrical Engineering) THE UNIVERSITY OF BRITISH COLUMBIA (Okanagan) January 2021 © Adel Tabakhpour Langeroudi, 2021 ii The following individuals certify that they have read, and recommend to the College of Graduate Studies for acceptance, a thesis/dissertation entitled: Incorporating High-Impedance-Fault Detection Functionality in Distribution System Online Monitoring: An Alternative to Existing Methods submitted by Adel Tabakhpour Langeroudi in partial fulfillment of the requirements for the degree of Master of Applied Science in Electrical Engineering Examining Committee: Dr. Morad Abdelaziz, Faculty of Applied Science, UBC Okanagan Supervisor Dr. Liwei Wang, Faculty of Applied Science, UBC Okanagan Supervisory Committee Member Dr. Christine Chen, Electrical and Computer Engineering, UBC Vancouver Supervisory Committee Member Dr. Sina Kheirkhah, Faculty of Applied Science, UBC Okanagan University Examiner iii Abstract The increasing deployment of informatics and communication systems in distribution systems (DS)s enables many desirable functionalities such as optimal control of distributed energy resources, online fault detection, online topology identification and energy theft detection. In this thesis, we focus on exploiting this emerging monitoring and control infrastructure to address high-impedance faults (HIF)s. HIFs have long been recognized as a serious protection issue in DSs, which can adversely impact the DS safety and protection as well as its operation and profitability. Trees contacting overhead lines and deteriorated insulators (due to cracks, dust, humidity, ice, etc.) are the main triggers of HIF in DSs. Once created, HIF imposes a large imped…
has type: Thesis/Dissertation
date issued: 2021-02
is shown at: 10.14288/1.0395771
language: eng
degree discipline: Electrical 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
type: Text
identifier URI: http://hdl.handle.net/2429/77211