High Power Laser and Particle Beams, Volume. 37, Issue 7, 075003(2025)
Field-line coupling characteristics of relay protection device under strong electromagnetic pulse
Figures & Tables(15)
Fig. 2. High-altitude electromagnetic pulse and its field-line coupling mode
Fig. 3. Electromagnetic pulse test environment and equipment layout
Fig. 5. Measured electric field and electric field under empty space
Fig. 10. Schematic diagram of the action of strong electromagnetic pulse
Table 1. Abnormal condition of relay protection device
View tableView in ArticleTable 1. Abnormal condition of relay protection device
output voltage of electrical fast transient/V test phenomenon 500 no phenomenon 800 no phenomenon 1000 the main screen goes back to“protection start” 1500 do not attempt single-phase trip, directly perform three-phase trip 2000 directly perform three-phase trip and send “accelerated intertrip” order
Table 2. High altitude electromagnetic pulse test results
View tableView in ArticleTable 2. High altitude electromagnetic pulse test results
field intensity/(kV/m) common mode current on signal line/A test phenomenon 4.50 6.99 —— 6.41 10.09 —— 9.06 13.62 —— 14.43 22.57 —— 19.51 29.91 —— 21.68 31.18 —— 23.17 32.45 maloperation/extended operation time 24.25 33.98 maloperation 25.69 36.10 maloperation 25.58 36.95 maloperation 29.83 42.45 maloperation 31.23 41.73 maloperation 34.40 45.12 maloperation
Table 3. pulse current injection test results
View tableView in ArticleTable 3. pulse current injection test results
pulse injection source voltage/kV common mode current on signal line/A test phenomenon 16 19.52 —— 18 22.40 —— 20 25.28 —— 22 30.10 —— 24 34.90 —— 26 36.70 —— 28 36.92 maloperation 30 42.68 maloperation 32 47.16 maloperation
Table 4. Field line coupling simulation results
View tableView in ArticleTable 4. Field line coupling simulation results
cable type shielding current peak value/A core current peak value/A secondary cable grounded on both sides of shield layer and armor layer 37.11 0.17 secondary cable grounded on both sides of shield layer 50.15 0.19 secondary cable grounded on one side of the shield layer 50.16 11.55 ungrounded secondary cable —— 11.55 signal cable in cabinet —— 0.08
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Dingding Yao, Weidong Zhang, Long Jin, Zexin Zhou, Guanglong Zhou. Field-line coupling characteristics of relay protection device under strong electromagnetic pulse[J]. High Power Laser and Particle Beams, 2025, 37(7): 075003
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Received: Jan. 15, 2025
Accepted: Jun. 3, 2025
Published Online: Jul. 18, 2025
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