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Simulation Analysis on Conducted EMD Caused by Valves in \pm 800 kV UHVDC Converter Station

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8 Author(s)
Zhan-Qing Yu ; Dept. of Electr. Eng., Tsinghua Univ., Beijing ; Jin-Liang He ; Rong Zeng ; Hong Rao
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Wideband frequency electromagnetic (EM) noise generated during the turn-on and turn-off processes of thyristor valves in converter stations is conducted along the primary circuitry, and may interfere with secondary systems. The EM interference (EMI) problem in a plusmn800 kV ultra-HVDC converter station is an important issue that should be studied carefully in the design stage. A method to analyze the conducted EM disturbance (EMD) based on time-domain wideband circuit simulation is proposed here, which is verified through the field test results of a plusmn500 kV converter station. Models of major equipment are described. The EMD levels of a plusmn800 kV converter station, which is currently being planned and built in China, are calculated, and compared with those of a plusmn500 kV converter station.

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Electromagnetic Compatibility, IEEE Transactions on  (Volume:51 ,  Issue: 2 )