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Energies 2018, 11(6), 1521; https://doi.org/10.3390/en11061521

Calculation of Hybrid Ionized Field of AC/DC Transmission Lines by the Meshless Local Petorv–Galerkin Method

1
State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, Chongqing 400044, China
2
State Grid Henan Electric Power Corporation Research Institute, Zhengzhou 450052, China
3
State Grid Electric Power Research Institute, Wuhan Nanrui Co., Ltd., Wuhan 430060, China
*
Author to whom correspondence should be addressed.
Received: 9 May 2018 / Revised: 31 May 2018 / Accepted: 31 May 2018 / Published: 12 June 2018
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Abstract

To save land resources, the construction of the high-voltage direct current (HVDC) and high-voltage alternating current (HVAC) hybrid transmission lines in the same corridor is inevitable. To provide suggestions for the construction of the AC/DC parallel lines, the hybrid ionized field of AC/DC transmission lines was calculated by the meshless local Petorv–Galerkin (MLPG) method for the first time. In this method, the radius of local sub-domain is adjusted to the nodes close to the global boundary, but not exactly on the boundary. It can avoid the boundary integral, as well as having simplified calculation. The method was validated by comparing with measured results and calculation results. The MLPG method is beneficial to obtaining high-precision results by constructing the more complex shape function. Finally, a field distribution of the parallel line of about ±800 kV DC/500 kV AC was calculated. Moreover, the influence of different parallel spacing and AC voltage level on the hybrid ionized field was analyzed, which provides theoretical basis for real parallel lines design. View Full-Text
Keywords: MLPG; AC/DC; parallel lines; hybrid ionized field; the influence of AC line MLPG; AC/DC; parallel lines; hybrid ionized field; the influence of AC line
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Li, Q.; Yang, H.; Yang, F.; Yao, D.; Zhang, G.; Ran, J.; Gao, B. Calculation of Hybrid Ionized Field of AC/DC Transmission Lines by the Meshless Local Petorv–Galerkin Method. Energies 2018, 11, 1521.

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