Numerical Analysis of Electromagnetic Field, Heat and Thermal Stress of a Transmission Line Surge Arrester for Lightning Currents
The voltage across a 77‐kV‐class transmission line surge arrester (TLSA) and the heat in the TLSA have been computed using the finite‐difference time‐domain (FDTD) method for a lightning current having a magnitude of 50 kA, a risetime of 1 μs, and a half‐peak width of about 100 μs. The TLSA is repre...
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| Veröffentlicht in: | IEEJ transactions on electrical and electronic engineering 2023-07, Vol.18 (7), p.1208-1210 |
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| creator | Nishimura, Yoshiki Baba, Yoshihiro Shinjo, Kazuo |
| description | The voltage across a 77‐kV‐class transmission line surge arrester (TLSA) and the heat in the TLSA have been computed using the finite‐difference time‐domain (FDTD) method for a lightning current having a magnitude of 50 kA, a risetime of 1 μs, and a half‐peak width of about 100 μs. The TLSA is represented with series‐connected‐nine ZnO elements, each of which has a length of 36 mm and a diameter of 32 mm. The ZnO element is represented with many 2 × 2 × 2 mm cubic cells, each of which has a nonlinear resistivity in each of the x‐, y‐, and z‐directions dependent on the electric field in each direction and the temperature in each cell. From the spatial and temporal distributions of FDTD‐computed heat in the TLSA, the spatial and temporal distributions of thermal stress in the TLSA have been computed using the finite‐element method. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC. |
| doi_str_mv | 10.1002/tee.23824 |
| format | Article |
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The TLSA is represented with series‐connected‐nine ZnO elements, each of which has a length of 36 mm and a diameter of 32 mm. The ZnO element is represented with many 2 × 2 × 2 mm cubic cells, each of which has a nonlinear resistivity in each of the x‐, y‐, and z‐directions dependent on the electric field in each direction and the temperature in each cell. From the spatial and temporal distributions of FDTD‐computed heat in the TLSA, the spatial and temporal distributions of thermal stress in the TLSA have been computed using the finite‐element method. © 2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.</description><identifier>ISSN: 1931-4973</identifier><identifier>EISSN: 1931-4981</identifier><identifier>DOI: 10.1002/tee.23824</identifier><language>eng</language><publisher>Hoboken, USA: John Wiley & Sons, Inc</publisher><subject>Computation ; Electric fields ; Electromagnetic fields ; FDTD method ; Finite difference time domain method ; finite element method ; Lightning ; lightning current ; Numerical analysis ; Surge arresters ; Thermal stress ; transmission line surge arrester ; Transmission lines ; Zinc oxide ; ZnO element</subject><ispartof>IEEJ transactions on electrical and electronic engineering, 2023-07, Vol.18 (7), p.1208-1210</ispartof><rights>2023 Institute of Electrical Engineer of Japan and Wiley Periodicals LLC.</rights><rights>2023 Institute of Electrical Engineers of Japan. 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The TLSA is represented with series‐connected‐nine ZnO elements, each of which has a length of 36 mm and a diameter of 32 mm. The ZnO element is represented with many 2 × 2 × 2 mm cubic cells, each of which has a nonlinear resistivity in each of the x‐, y‐, and z‐directions dependent on the electric field in each direction and the temperature in each cell. 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| source | Wiley Online Library Journals Frontfile Complete |
| subjects | Computation Electric fields Electromagnetic fields FDTD method Finite difference time domain method finite element method Lightning lightning current Numerical analysis Surge arresters Thermal stress transmission line surge arrester Transmission lines Zinc oxide ZnO element |
| title | Numerical Analysis of Electromagnetic Field, Heat and Thermal Stress of a Transmission Line Surge Arrester for Lightning Currents |
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