{"id":{"repo_id":"tu-berlin","oai_identifier":"oai:depositonce.tu-berlin.de:11303/21144"},"canonical_url":"https://search.dev.ndltd.org/etd/tu-berlin/oai:depositonce.tu-berlin.de:11303/21144","repository":{"repo_id":"tu-berlin","name":"Technische Universität Berlin","base_url":"https://api-depositonce.tu-berlin.de/server/oai/request"},"display":{"title":"One-terminal traveling wave-based protection for HVAC and HVDC transmission lines","abstract":"This work proposes developing one-terminal traveling wave-based transmission line protection methods for HVAC (High Voltage Alternating Current) and HVDC (High Voltage Direct Current) systems. It considers the effect of the sampling frequency on the protection, which until now has not been investigated for one-terminal methods. It addresses inaccuracies in wave velocity estimations, which traditionally lead to problems in methods based on traveling waves, and presents solutions to these problems. The proposed methods have been evaluated through computer simulations. The proposed earth fault distance protection for HVAC transmission lines was evaluated using an actual commercial relay with time-domain-based protection functions. The results related to the proposed earth fault distance protection for HVAC transmission lines show that the proposed function, when associated with other existing protection functions, can achieve a remarkable enhancement in the dependability and velocity of the transmission line protection. The results concerning the method based on traveling wave reflections show that it is possible to protect most point-to-point transmission lines quickly, without communication, and independent of the wave speed estimation. Finally, the results concerning distance protection for meshed HVDC systems demonstrate the applicability of the proposed method for such systems. The method showed an operating time below 2 ms for a line of 500 km in length. This operating time meets the likely requirements that HVDC meshed systems will present. Additionally, the method demonstrated selectivity for a 4-terminal system interconnected by five transmission lines.","abstract_html":"This work proposes developing one-terminal traveling wave-based transmission line protection methods for HVAC (High Voltage Alternating Current) and HVDC (High Voltage Direct Current) systems. It considers the effect of the sampling frequency on the protection, which until now has not been investigated for one-terminal methods. It addresses inaccuracies in wave velocity estimations, which traditionally lead to problems in methods based on traveling waves, and presents solutions to these problems. The proposed methods have been evaluated through computer simulations. The proposed earth fault distance protection for HVAC transmission lines was evaluated using an actual commercial relay with time-domain-based protection functions. The results related to the proposed earth fault distance protection for HVAC transmission lines show that the proposed function, when associated with other existing protection functions, can achieve a remarkable enhancement in the dependability and velocity of the transmission line protection. The results concerning the method based on traveling wave reflections show that it is possible to protect most point-to-point transmission lines quickly, without communication, and independent of the wave speed estimation. Finally, the results concerning distance protection for meshed HVDC systems demonstrate the applicability of the proposed method for such systems. The method showed an operating time below 2 ms for a line of 500 km in length. This operating time meets the likely requirements that HVDC meshed systems will present. Additionally, the method demonstrated selectivity for a 4-terminal system interconnected by five transmission lines.","abstract_has_math":false,"creators":["Silva França, Rafael Lucas da"],"institution":null,"degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":[],"advisors":["Strunz, Kai","Bezerra Costa, Flavio","Vigolvino Lopes, Felipe"],"committee_chairs":[],"committee_members":[],"year":2024,"date_issued":"2024","date_published":"2024","updated_at":"2026-07-27T21:28:26Z","subjects":[],"languages":["en","de","pt"],"rights":[],"rights_urls":["https://creativecommons.org/licenses/by/4.0/"],"identifier_entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://doi.org/10.14279/depositonce-19944"],"render_values":[{"text":"https://doi.org/10.14279/depositonce-19944","href":"https://doi.org/10.14279/depositonce-19944","code":true}]}]},"links":{"outbound_url":"https://depositonce.tu-berlin.de/handle/11303/21144","outbound_label":"Repository record","outbound_source":"dc:identifier.uri"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor.advisor","label":"Advisor","values":["Strunz, Kai","Bezerra Costa, Flavio","Vigolvino Lopes, Felipe"]},{"key":"dc:creator","label":"Author","values":["Silva França, Rafael Lucas da"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:date.accessioned","label":"Dc Date Accessioned","values":["2024-03-22T07:37:38Z"]},{"key":"dc:date.available","label":"Dc Date Available","values":["2024-03-22T07:37:38Z"]},{"key":"dc:date.issued","label":"Date","values":["2024"]},{"key":"dc:type","label":"Dc Type","values":["Doctoral Thesis"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language.iso","label":"Language (ISO)","values":["en","de","pt"]},{"key":"dc:rights.uri","label":"Rights URI","values":["https://creativecommons.org/licenses/by/4.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier.uri","label":"Identifier URI","values":["https://depositonce.tu-berlin.de/handle/11303/21144","https://doi.org/10.14279/depositonce-19944"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["This work proposes developing one-terminal traveling wave-based transmission line protection methods for HVAC (High Voltage Alternating Current) and HVDC (High Voltage Direct Current) systems. It considers the effect of the sampling frequency on the protection, which until now has not been investigated for one-terminal methods. It addresses inaccuracies in wave velocity estimations, which traditionally lead to problems in methods based on traveling waves, and presents solutions to these problems. The proposed methods have been evaluated through computer simulations. The proposed earth fault distance protection for HVAC transmission lines was evaluated using an actual commercial relay with time-domain-based protection functions. The results related to the proposed earth fault distance protection for HVAC transmission lines show that the proposed function, when associated with other existing protection functions, can achieve a remarkable enhancement in the dependability and velocity of the transmission line protection. The results concerning the method based on traveling wave reflections show that it is possible to protect most point-to-point transmission lines quickly, without communication, and independent of the wave speed estimation. Finally, the results concerning distance protection for meshed HVDC systems demonstrate the applicability of the proposed method for such systems. The method showed an operating time below 2 ms for a line of 500 km in length. This operating time meets the likely requirements that HVDC meshed systems will present. Additionally, the method demonstrated selectivity for a 4-terminal system interconnected by five transmission lines.","In dieser Arbeit wird die Entwicklung von auf Wanderwellen basierenden Ein-Terminal-Übertragungsleitungsschutzverfahren für HVAC- (High Voltage Alternating Current) und HVDC- (High Voltage Direct Current) Systeme vorgeschlagen. Dabei wird die Auswirkung der Abtastfrequenz auf den Schutz berücksichtigt, die bisher für einpolige Methoden nicht untersucht wurde. Sie befasst sich mit Ungenauigkeiten bei der Schätzung der Wellengeschwindigkeit, die traditionell zu Problemen bei Methoden führen, die auf Wanderwellen basieren, und stellt Lösungen für diese Probleme vor. Die vorgeschlagenen Methoden wurden durch Computersimulationen bewertet. Der vorgeschlagene Erdschlussdistanzschutz für HVAC-Übertragungsleitungen wurde unter Verwendung eines aktuellen kommerziellen Relais mit zeitbereichsbasierten Schutzfunktionen bewertet. Die Ergebnisse in Bezug auf den vorgeschlagenen Erdschlussdistanzschutz für HLK-Übertragungsleitungen zeigen, dass die vorgeschlagene Funktion, wenn sie mit anderen bestehenden Schutzfunktionen kombiniert wird, eine bemerkenswerte Verbesserung der Zuverlässigkeit und Geschwindigkeit des Übertragungsleitungsschutzes erreichen kann. Die Ergebnisse bezüglich der auf Wanderwellenreflexionen basierenden Methode zeigen, dass es möglich ist, die meisten Punkt-zu-Punkt-Übertragungsleitungen schnell, ohne Kommunikation und unabhängig von der Schätzung der Wellengeschwindigkeit zu schützen. Schließlich zeigen die Ergebnisse zum Distanzschutz für vermaschte HGÜ-Systeme die Anwendbarkeit der vorgeschlagenen Methode für solche Systeme. Die Methode ergab eine Betriebszeit von unter 2 ms für eine 500 km lange Leitung. Diese Betriebszeit entspricht den wahrscheinlichen Anforderungen, die HGÜ-Maschensysteme stellen werden. Darüber hinaus zeigte die Methode Selektivität für ein System mit vier Terminals, die durch fünf Übertragungsleitungen miteinander verbunden sind."]},{"key":"dc:title","label":"Title","values":["One-terminal traveling wave-based protection for HVAC and HVDC transmission lines"]}]}],"canonical_facts":{"dc:contributor.advisor":["Strunz, Kai","Bezerra Costa, Flavio","Vigolvino Lopes, Felipe"],"dc:creator":["Silva França, Rafael Lucas da"],"dc:date.accessioned":["2024-03-22T07:37:38Z"],"dc:date.available":["2024-03-22T07:37:38Z"],"dc:date.issued":["2024"],"dc:description.abstract":["This work proposes developing one-terminal traveling wave-based transmission line protection methods for HVAC (High Voltage Alternating Current) and HVDC (High Voltage Direct Current) systems. It considers the effect of the sampling frequency on the protection, which until now has not been investigated for one-terminal methods. It addresses inaccuracies in wave velocity estimations, which traditionally lead to problems in methods based on traveling waves, and presents solutions to these problems. The proposed methods have been evaluated through computer simulations. The proposed earth fault distance protection for HVAC transmission lines was evaluated using an actual commercial relay with time-domain-based protection functions. The results related to the proposed earth fault distance protection for HVAC transmission lines show that the proposed function, when associated with other existing protection functions, can achieve a remarkable enhancement in the dependability and velocity of the transmission line protection. The results concerning the method based on traveling wave reflections show that it is possible to protect most point-to-point transmission lines quickly, without communication, and independent of the wave speed estimation. Finally, the results concerning distance protection for meshed HVDC systems demonstrate the applicability of the proposed method for such systems. The method showed an operating time below 2 ms for a line of 500 km in length. This operating time meets the likely requirements that HVDC meshed systems will present. Additionally, the method demonstrated selectivity for a 4-terminal system interconnected by five transmission lines.","In dieser Arbeit wird die Entwicklung von auf Wanderwellen basierenden Ein-Terminal-Übertragungsleitungsschutzverfahren für HVAC- (High Voltage Alternating Current) und HVDC- (High Voltage Direct Current) Systeme vorgeschlagen. Dabei wird die Auswirkung der Abtastfrequenz auf den Schutz berücksichtigt, die bisher für einpolige Methoden nicht untersucht wurde. Sie befasst sich mit Ungenauigkeiten bei der Schätzung der Wellengeschwindigkeit, die traditionell zu Problemen bei Methoden führen, die auf Wanderwellen basieren, und stellt Lösungen für diese Probleme vor. Die vorgeschlagenen Methoden wurden durch Computersimulationen bewertet. Der vorgeschlagene Erdschlussdistanzschutz für HVAC-Übertragungsleitungen wurde unter Verwendung eines aktuellen kommerziellen Relais mit zeitbereichsbasierten Schutzfunktionen bewertet. Die Ergebnisse in Bezug auf den vorgeschlagenen Erdschlussdistanzschutz für HLK-Übertragungsleitungen zeigen, dass die vorgeschlagene Funktion, wenn sie mit anderen bestehenden Schutzfunktionen kombiniert wird, eine bemerkenswerte Verbesserung der Zuverlässigkeit und Geschwindigkeit des Übertragungsleitungsschutzes erreichen kann. Die Ergebnisse bezüglich der auf Wanderwellenreflexionen basierenden Methode zeigen, dass es möglich ist, die meisten Punkt-zu-Punkt-Übertragungsleitungen schnell, ohne Kommunikation und unabhängig von der Schätzung der Wellengeschwindigkeit zu schützen. Schließlich zeigen die Ergebnisse zum Distanzschutz für vermaschte HGÜ-Systeme die Anwendbarkeit der vorgeschlagenen Methode für solche Systeme. Die Methode ergab eine Betriebszeit von unter 2 ms für eine 500 km lange Leitung. Diese Betriebszeit entspricht den wahrscheinlichen Anforderungen, die HGÜ-Maschensysteme stellen werden. Darüber hinaus zeigte die Methode Selektivität für ein System mit vier Terminals, die durch fünf Übertragungsleitungen miteinander verbunden sind."],"dc:identifier.uri":["https://depositonce.tu-berlin.de/handle/11303/21144","https://doi.org/10.14279/depositonce-19944"],"dc:language.iso":["en","de","pt"],"dc:rights.uri":["https://creativecommons.org/licenses/by/4.0/"],"dc:title":["One-terminal traveling wave-based protection for HVAC and HVDC transmission lines"],"dc:type":["Doctoral Thesis"]},"updated_at":"2026-07-27T21:28:26Z"}