Simulation of Ion-Flow Field at the Crossing of HVDC and HVAC Transmission Lines

• Published in: IEEE transactions on power delivery Vol. 27; no. 4; pp. 2382 - 2389
• Main Authors: Zhou, Xiangxian, Lu, Tiebing, Cui, Xiang, Liu, Yang, Li, Xuebao
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.10.2012; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: 3-D method; Applied sciences; Computer simulation; Conservation; Corona; Current density; Density measurement; Direct current networks; Discretization; Electric fields; Electrical engineering. Electrical power engineering; Electrical power engineering; Electricity distribution; Exact sciences and technology; Finite volume method; HVAC; HVAC transmission lines; HVDC transmission; HVDC transmission lines; ion-flow field; Mathematical models; Miscellaneous; Poisson equation; Power networks and lines; Power transmission lines; Studies; Testing. Reliability. Quality control; Three dimensional; Transmission line measurements; Transmission lines; Users connections and in door installation; HVDC transmission lines; Electric energy transportation; HVAC systems; Cross-over phenomenon; Poisson equation; Finite volume method; Flow field; ion-flow field; HVDC power transmission; Finite element method; 3-D method; Electric field; Transmission line; Time domain method; Discretization; Indoor installation; Testing equipment; HVAC transmission lines; System simulation; Corona; Current density; High voltage line; Power transmission line
• ISSN: 0885-8977; 1937-4208
• DOI: 10.1109/TPWRD.2012.2207409

This paper aims at developing a simulation method for the ion-flow field when HVDC transmission lines cross over HVAC transmission lines. A time-domain 3-D method is proposed in this paper, where the 3-D finite-element method and 3-D finite volume method are used to solve the Poisson's equation and the charge conservation law, respectively. The implicit temporal discretization scheme is used to accelerate the computation. An indoor test model is set up in this work, and the simulation results agree well with the measured results from this test model, which validates the proposed method. The proposed method is then used to calculate the ground-level electric field and ion current density under the crossing of ± 800-kV HVDC transmission lines and 500-kV HVAC transmission lines. The presence of HVAC transmission lines is found to have a significant influence on the ion-flow field under the crossing.