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High altitudes and heavy pollution are special technical problems faced by UHV DC transmission line in China. Much research work of external insulation performance for ±800 kV DC Transmission Lines were carried out at National Engineering Laboratory for Ultra High Voltage (UHV) Engineering Technology (Kunming). For composite insulators, the shed design parameters have great influence on the flashover...
A modified method based on the optimized charge simulation method (CSM) is used to predict the corona onset voltage and electric field when the space charges due to the corona are considered. Based on the streamer model of corona discharge, space charges generated near the conductors are predicted. In order to calculate the electric field at the conductor surface, space charges are replaced by some...
Electromagnetic radiation from power transmission lines can influence the electronic devices nearby due to the corona discharge. A numerical method is proposed to predict the radio interference based on the multi-conductor transmission lines mode and dipole mode. Finally some transmission line structures are analyzed.
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