期刊
2022 36TH INTERNATIONAL CONFERENCE ON LIGHTNING PROTECTION (ICLP 2022)
卷 -, 期 -, 页码 529-534出版社
IEEE
关键词
electromagnetic transients; lightning overvoltages; overhead hybrid lines
资金
- CAPES Foundation (Higher Education Personnel Improvement Coordination) [88882.179937/2018-01]
This paper analyzes the overvoltages caused by direct strokes to a hybrid overhead line and discusses their dependence on parameters such as stroke current front time, soil resistivity, and grounding system impedance. It focuses on the voltages on the medium-voltage circuit. A 1:20 scale model has been created, and the measured voltages align well with the calculated values.
This paper analyzes the overvoltages associated with direct strokes to a hybrid overhead line (138 kV and 13.8 kV circuits sharing the same structures). The voltages are calculated using the EMTP-RV, and their dependence on parameters such as the stroke current front time, soil resistivity, and impedance of the grounding system is discussed. Emphasis is given to the voltages on the medium-voltage circuit. A 1:20 scale model of a hybrid line has been implemented, and a good agreement has been found between measured and calculated voltages.
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