Traveling wave method for event localization and characterization of power transmission lines

Hudomalj, Marko (author), Trost, Andrej (author), Čampa, Andrej (author)

Traveling wave theory is deployed today to improve the monitoring of transmission lines in electrical power grids. Most traveling wave methods require prior knowledge of the wave propagation characteristic of the transmission line, which is a major source of error as the value changes during the operation of the line. To improve the localization of events on transmission lines, we propose a new online localization method that simultaneously determines the frequency-dependent wave propagation characteristic from the traveling wave measurements of the event. Compared to conventional methods, this is achieved with one additional traveling wave measurement, but the method can still be applied in different measurement setups. We have derived the method based on the complex continuous wavelet transform. The accuracy of the method is evaluated in a simulation with a frequency-dependent transmission line model of the IEEE 39-bus system. The method was developed independently of the type of event and evaluated in test setups considering different lengths of the monitored line, line types and event locations. The localization accuracy is compared with existing online methods and analyzed with regard to the characterization capabilities. The method has a high relative localization accuracy in the range of 0.1% under different test conditions.

• Language: English
• Keywords: event localization, wave propagation, transmission line, traveling wave, wavelet transform, wave propagation characteristic
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: FE - Faculty of Electrical Engineering
• Publication status: Published
• Publication version: Version of Record
• Year: 2024
• Number of pages: 11 str.
• Numbering: Vol. 232, art. 110382
• PID: 20.500.12556/RUL-156323
• UDC: 621.3
• ISSN on article: 1873-2046
• DOI: 10.1016/j.epsr.2024.110382
• COBISS.SI-ID: 192792835
• Publication date in RUL: 20.05.2024

Record is a part of a journal

• Title: Electric power systems research
• Publisher: Elsevier
• ISSN: 1873-2046
• COBISS.SI-ID: 175345411

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.

Secondary language

• Language: Slovenian
• Keywords: elektroenergetski sistemi