On the Step Type of Continuous Propagating Positive Leader in Laboratory‐Scale Long Spark Discharges
Abstract Positive leader steps are currently not well understood. Many recent findings challenge the previous understanding of the positive leader steps occurring in continuous leader development. In this work, we investigate the stepping propagation of positive leaders in laboratory spark discharge...
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| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2022-06-01
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| Series: | Geophysical Research Letters |
| Subjects: | |
| Online Access: | https://doi.org/10.1029/2022GL097890 |
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| _version_ | 1832591272929394688 |
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| author | Shengxin Huang Weijiang Chen Zhong Fu Nianwen Xiang Yujian Ding Dengfeng Cheng Jianwei Gu Zhehao Pei |
| author_facet | Shengxin Huang Weijiang Chen Zhong Fu Nianwen Xiang Yujian Ding Dengfeng Cheng Jianwei Gu Zhehao Pei |
| author_sort | Shengxin Huang |
| collection | DOAJ |
| description | Abstract Positive leader steps are currently not well understood. Many recent findings challenge the previous understanding of the positive leader steps occurring in continuous leader development. In this work, we investigate the stepping propagation of positive leaders in laboratory spark discharge by using a high‐speed video camera and a synchronized electrical parameter measurement system. Two types of steps were distinguished in the positive leader continuous development process based on the current pulse features. One type of step exhibits a bell‐shaped current pulse, while the other type of step exhibits a steep current rise. The former type vanishes when the rising rate of the ambient electric field increases, whereas the latter type, which could be led by a separate luminous structure, does not. |
| format | Article |
| id | doaj-art-ea00205a40c049c8ad9a6ff232234ac8 |
| institution | Kabale University |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2022-06-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-ea00205a40c049c8ad9a6ff232234ac82025-01-22T14:38:16ZengWileyGeophysical Research Letters0094-82761944-80072022-06-014912n/an/a10.1029/2022GL097890On the Step Type of Continuous Propagating Positive Leader in Laboratory‐Scale Long Spark DischargesShengxin Huang0Weijiang Chen1Zhong Fu2Nianwen Xiang3Yujian Ding4Dengfeng Cheng5Jianwei Gu6Zhehao Pei7School of Electrical Engineering and Automation Hefei University of Technology Hefei ChinaState Grid Corporation of China Beijing ChinaElectric Power Research Institute State Grid Anhui Electric Power Company Hefei ChinaSchool of Electrical Engineering and Automation Hefei University of Technology Hefei ChinaDepartment of High Voltage China Electric Power Research Institute Beijing ChinaElectric Power Research Institute State Grid Anhui Electric Power Company Hefei ChinaDepartment of High Voltage China Electric Power Research Institute Beijing ChinaState Key Laboratory of Electrical Insulation and Power Equipment School of Electrical Engineering Xi'an Jiaotong University Xi'an ChinaAbstract Positive leader steps are currently not well understood. Many recent findings challenge the previous understanding of the positive leader steps occurring in continuous leader development. In this work, we investigate the stepping propagation of positive leaders in laboratory spark discharge by using a high‐speed video camera and a synchronized electrical parameter measurement system. Two types of steps were distinguished in the positive leader continuous development process based on the current pulse features. One type of step exhibits a bell‐shaped current pulse, while the other type of step exhibits a steep current rise. The former type vanishes when the rising rate of the ambient electric field increases, whereas the latter type, which could be led by a separate luminous structure, does not.https://doi.org/10.1029/2022GL097890lightningpositive leaderrestrikestep |
| spellingShingle | Shengxin Huang Weijiang Chen Zhong Fu Nianwen Xiang Yujian Ding Dengfeng Cheng Jianwei Gu Zhehao Pei On the Step Type of Continuous Propagating Positive Leader in Laboratory‐Scale Long Spark Discharges Geophysical Research Letters lightning positive leader restrike step |
| title | On the Step Type of Continuous Propagating Positive Leader in Laboratory‐Scale Long Spark Discharges |
| title_full | On the Step Type of Continuous Propagating Positive Leader in Laboratory‐Scale Long Spark Discharges |
| title_fullStr | On the Step Type of Continuous Propagating Positive Leader in Laboratory‐Scale Long Spark Discharges |
| title_full_unstemmed | On the Step Type of Continuous Propagating Positive Leader in Laboratory‐Scale Long Spark Discharges |
| title_short | On the Step Type of Continuous Propagating Positive Leader in Laboratory‐Scale Long Spark Discharges |
| title_sort | on the step type of continuous propagating positive leader in laboratory scale long spark discharges |
| topic | lightning positive leader restrike step |
| url | https://doi.org/10.1029/2022GL097890 |
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