A High-Accuracy Iterative Method of Characteristics without Deutsch Assumption for Calculating Ion-Flow Field of HVDC Overhead Lines
Qiao Ji1, Xu Zhiwei2, Zou Jun1, Yuan Jiansheng1
1. State Key Lab of Control and Simulation of Power Systems and Generation Equipments Department of Electrical Engineering Tsinghua University Beijing 100084 China; 2. Henan Electric Power Survey & Design Institute Zhengzhou 450007 China
Abstract：The flux tracing method is frequently applied for predicting the ion flow field of HVDC transmission lines, the error of which is mainly caused by Deutsch assumption. In this paper, a new iterative method of characteristics is proposed based on the methodology of flux lines (or characteristic lines). The directions of the characteristic lines are modified in the iterations using the updated electric field. Thus Deutsch assumption is not made for the proposed method. Results show that the present method has a better performance on the ground-level electric field and ion density, space charge distribution, flux conservation law and power losses. In addition, errors using two types of boundary conditions are compared and analyzed.
乔骥, 徐志威, 邹军, 袁建生. 一种消除Deutsch假设的高精度迭代特征线方法求解高压直流输电线路离子流场[J]. 电工技术学报, 2018, 33(19): 4419-4425.
Qiao Ji, Xu Zhiwei, Zou Jun, Yuan Jiansheng. A High-Accuracy Iterative Method of Characteristics without Deutsch Assumption for Calculating Ion-Flow Field of HVDC Overhead Lines. Transactions of China Electrotechnical Society, 2018, 33(19): 4419-4425.
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2018, Vol. 33 
