期刊
IEEE TRANSACTIONS ON POWER DELIVERY
卷 33, 期 4, 页码 1611-1619出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRD.2017.2737006
关键词
Corona; HVDC transmission line; ion flow field; method of characteristics
资金
- National Natural Science Foundations of China [51322703, 51237004]
In this paper, a 3-D iterative approach is presented to calculate the nonlinear ion-flow field around two cross-over HVdc transmission lines. The electric-field resulting from space charges is calculated by an integral method. An analytical formula to calculate the space charges along the electric-field lines determined by the electric field is derived based on a 3-D method of characteristics. The electric-field distribution and the space-charge distribution are calculated iteratively until a convergence is reached. Since both the electric field and the space charges are mainly calculated by analytical approaches, the approach greatly reduces the computing scale and can be used for 3-D calculation. The approach was validated by the experiment on a reduced-scale model. The ion-flow field at the crossing of two +/- 800-kV transmission lines was calculated with the method and discussed.
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