{"id":{"repo_id":"aachen","oai_identifier":"oai:publications.rwth-aachen.de:57047"},"canonical_url":"https://search.dev.ndltd.org/etd/aachen/oai:publications.rwth-aachen.de:57047","repository":{"repo_id":"aachen","name":"RWTH Aachen University","base_url":"https://publications.rwth-aachen.de/oai2d"},"display":{"title":"Modellierung der Auswirkungen von Störlichtbögen in elektrischen Anlagen","abstract":"An internal arc in electrical systems is a rare event. However, if it arises, it can endanger persons apart from the interruption of the power supply and the damage of electrical apparatus. For the control of its effects, in particular the modelling of the pressure development in its environment, is important. An accurate determination of the pressure development is essential also for the existing equipment, in which no measurements can be made. An important parameter for the determination of the pressure development is the portion of the electric energy converted from the internal arc, which increases the pressure. This portion can also be described as a thermal transfer coefficient or kp–factor, which will be determined theoretically for the first time in the work as a function of the kind and the density of the isolating gas, in which the arc burns and the gas volume, as well as of the electrode material with the consideration of material evaporation and chemical reactions of metal vapor with the isolating gas. In order to reach this, the thermal transfer coefficient kp0 is introduced as \"relative purity\" of the isolating gas, which can be determined for SF6 with high gas densities experimentally, and with that one can get those. The calculated values of kp agree good with available experimental values. The dependence of gas density on kp is of special importance, because in arrangements with pressure–relief–openings the gas density decreases. In order to be able to describe the influence of the changing gas conditions on the arc characteristics (temperature and arcing voltage), a radiation model with a net emission coefficient is introduced. The reproduction of the radiation in the arc and in its environment, presented here, can be consulted for the determination of the temperature development in switchgears. In a further Appendix, the wall deformation is simulated in the substation with switchgear by the effect of the pressure due to the internal arc. The speciality to the fact is that the conditions of support of the walls and characteristics of pressure are considered and a solution is found, which gets along with analytic functions. The efficiency of the developed method of calculation for the determination of the pressure load by internal arc is demonstrated by some examples. The internal arcs are in a case with pressure–relief–openings or with channels, as well as in a case with strong material evaporation, for which experimental results from a test field are present.","abstract_html":"An internal arc in electrical systems is a rare event. However, if it arises, it can endanger persons apart from the interruption of the power supply and the damage of electrical apparatus. For the control of its effects, in particular the modelling of the pressure development in its environment, is important. An accurate determination of the pressure development is essential also for the existing equipment, in which no measurements can be made. An important parameter for the determination of the pressure development is the portion of the electric energy converted from the internal arc, which increases the pressure. This portion can also be described as a thermal transfer coefficient or kp–factor, which will be determined theoretically for the first time in the work as a function of the kind and the density of the isolating gas, in which the arc burns and the gas volume, as well as of the electrode material with the consideration of material evaporation and chemical reactions of metal vapor with the isolating gas. In order to reach this, the thermal transfer coefficient kp0 is introduced as "relative purity" of the isolating gas, which can be determined for SF6 with high gas densities experimentally, and with that one can get those. The calculated values of kp agree good with available experimental values. The dependence of gas density on kp is of special importance, because in arrangements with pressure–relief–openings the gas density decreases. In order to be able to describe the influence of the changing gas conditions on the arc characteristics (temperature and arcing voltage), a radiation model with a net emission coefficient is introduced. The reproduction of the radiation in the arc and in its environment, presented here, can be consulted for the determination of the temperature development in switchgears. In a further Appendix, the wall deformation is simulated in the substation with switchgear by the effect of the pressure due to the internal arc. The speciality to the fact is that the conditions of support of the walls and characteristics of pressure are considered and a solution is found, which gets along with analytic functions. The efficiency of the developed method of calculation for the determination of the pressure load by internal arc is demonstrated by some examples. The internal arcs are in a case with pressure–relief–openings or with channels, as well as in a case with strong material evaporation, for which experimental results from a test field are present.","abstract_has_math":false,"creators":["Zhang, Xiang"],"institution":"Publikationsserver der RWTH Aachen University","degree_name":null,"degree_level":null,"degree_discipline":null,"degree_department":null,"school":null,"contributors":["Pietsch, Gerhard J."],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2002,"date_issued":"2002","date_published":"2002","updated_at":"2026-07-30T19:42:01Z","subjects":["info:eu-repo/classification/ddc/620","Ingenieurwissenschaften"],"languages":["ger"],"rights":["info:eu-repo/semantics/openAccess"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-119117%22"],"render_values":[{"text":"https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-119117%22","href":"https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-119117%22","code":true}]}]},"links":{"outbound_url":"https://publications.rwth-aachen.de/record/57047","outbound_label":"Repository record","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["Pietsch, Gerhard J."]},{"key":"dc:creator","label":"Author","values":["Zhang, Xiang"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:coverage","label":"Dc Coverage","values":["DE"]},{"key":"dc:date","label":"Dc Date","values":["2002"]},{"key":"dc:publisher","label":"Institution","values":["Publikationsserver der RWTH Aachen University"]},{"key":"dc:relation","label":"Dc Relation","values":["info:eu-repo/semantics/altIdentifier/urn/urn:nbn:de:hbz:82-opus-4011"]},{"key":"dc:type","label":"Dc Type","values":["info:eu-repo/semantics/doctoralThesis","info:eu-repo/semantics/publishedVersion"]}]},{"id":"subjects_keywords","label":"Subjects and Keywords","entries":[{"key":"dc:subject","label":"Dc Subject","values":["info:eu-repo/classification/ddc/620","Ingenieurwissenschaften"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["ger"]},{"key":"dc:rights","label":"Dc Rights","values":["info:eu-repo/semantics/openAccess"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["https://publications.rwth-aachen.de/record/57047","https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-119117%22"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description","label":"Description","values":["An internal arc in electrical systems is a rare event. However, if it arises, it can endanger persons apart from the interruption of the power supply and the damage of electrical apparatus. For the control of its effects, in particular the modelling of the pressure development in its environment, is important. An accurate determination of the pressure development is essential also for the existing equipment, in which no measurements can be made. An important parameter for the determination of the pressure development is the portion of the electric energy converted from the internal arc, which increases the pressure. This portion can also be described as a thermal transfer coefficient or kp–factor, which will be determined theoretically for the first time in the work as a function of the kind and the density of the isolating gas, in which the arc burns and the gas volume, as well as of the electrode material with the consideration of material evaporation and chemical reactions of metal vapor with the isolating gas. In order to reach this, the thermal transfer coefficient kp0 is introduced as \"relative purity\" of the isolating gas, which can be determined for SF6 with high gas densities experimentally, and with that one can get those. The calculated values of kp agree good with available experimental values. The dependence of gas density on kp is of special importance, because in arrangements with pressure–relief–openings the gas density decreases. In order to be able to describe the influence of the changing gas conditions on the arc characteristics (temperature and arcing voltage), a radiation model with a net emission coefficient is introduced. The reproduction of the radiation in the arc and in its environment, presented here, can be consulted for the determination of the temperature development in switchgears. In a further Appendix, the wall deformation is simulated in the substation with switchgear by the effect of the pressure due to the internal arc. The speciality to the fact is that the conditions of support of the walls and characteristics of pressure are considered and a solution is found, which gets along with analytic functions. The efficiency of the developed method of calculation for the determination of the pressure load by internal arc is demonstrated by some examples. The internal arcs are in a case with pressure–relief–openings or with channels, as well as in a case with strong material evaporation, for which experimental results from a test field are present."]},{"key":"dc:source","label":"Dc Source","values":["Aachen : Publikationsserver der RWTH Aachen University II, 97 S. : Ill., graph. Darst. (2002). = Aachen, Techn. Hochsch., Diss., 2002"]},{"key":"dc:title","label":"Title","values":["Modellierung der Auswirkungen von Störlichtbögen in elektrischen Anlagen"]}]}],"canonical_facts":{"dc:contributor":["Pietsch, Gerhard J."],"dc:coverage":["DE"],"dc:creator":["Zhang, Xiang"],"dc:date":["2002"],"dc:description":["An internal arc in electrical systems is a rare event. However, if it arises, it can endanger persons apart from the interruption of the power supply and the damage of electrical apparatus. For the control of its effects, in particular the modelling of the pressure development in its environment, is important. An accurate determination of the pressure development is essential also for the existing equipment, in which no measurements can be made. An important parameter for the determination of the pressure development is the portion of the electric energy converted from the internal arc, which increases the pressure. This portion can also be described as a thermal transfer coefficient or kp–factor, which will be determined theoretically for the first time in the work as a function of the kind and the density of the isolating gas, in which the arc burns and the gas volume, as well as of the electrode material with the consideration of material evaporation and chemical reactions of metal vapor with the isolating gas. In order to reach this, the thermal transfer coefficient kp0 is introduced as \"relative purity\" of the isolating gas, which can be determined for SF6 with high gas densities experimentally, and with that one can get those. The calculated values of kp agree good with available experimental values. The dependence of gas density on kp is of special importance, because in arrangements with pressure–relief–openings the gas density decreases. In order to be able to describe the influence of the changing gas conditions on the arc characteristics (temperature and arcing voltage), a radiation model with a net emission coefficient is introduced. The reproduction of the radiation in the arc and in its environment, presented here, can be consulted for the determination of the temperature development in switchgears. In a further Appendix, the wall deformation is simulated in the substation with switchgear by the effect of the pressure due to the internal arc. The speciality to the fact is that the conditions of support of the walls and characteristics of pressure are considered and a solution is found, which gets along with analytic functions. The efficiency of the developed method of calculation for the determination of the pressure load by internal arc is demonstrated by some examples. The internal arcs are in a case with pressure–relief–openings or with channels, as well as in a case with strong material evaporation, for which experimental results from a test field are present."],"dc:identifier":["https://publications.rwth-aachen.de/record/57047","https://publications.rwth-aachen.de/search?p=id:%22RWTH-CONV-119117%22"],"dc:language":["ger"],"dc:publisher":["Publikationsserver der RWTH Aachen University"],"dc:relation":["info:eu-repo/semantics/altIdentifier/urn/urn:nbn:de:hbz:82-opus-4011"],"dc:rights":["info:eu-repo/semantics/openAccess"],"dc:source":["Aachen : Publikationsserver der RWTH Aachen University II, 97 S. : Ill., graph. Darst. (2002). = Aachen, Techn. Hochsch., Diss., 2002"],"dc:subject":["info:eu-repo/classification/ddc/620","Ingenieurwissenschaften"],"dc:title":["Modellierung der Auswirkungen von Störlichtbögen in elektrischen Anlagen"],"dc:type":["info:eu-repo/semantics/doctoralThesis","info:eu-repo/semantics/publishedVersion"]},"updated_at":"2026-07-30T19:42:01Z"}