Title :
The calculation of DC distribution in Hami AC power grid
Author :
Qi Yang ; Xi-shan Wen ; Ting-ting Guo
Author_Institution :
Sch. of Electr. Eng., Wuhan Univ., Wuhan, China
Abstract :
The DC magnetic bias is caused by the grounding current of HVDC transmission project. In order to analyze the influence that the grounding current of Tian-Zhong HVDC transmission project brings to the present Hami AC power grid, this paper is based on the coupled field-circuit method and the power grid topology structure of Hami area, the DC current distribution model in the Hami area is built. The model is proved to be correct after proceeding simulations and experiments. According to affordable DC current of some typical transformers, the conclusion is that some transformers in Hami area have serious DC magnetic bias risk under the present operation condition. Based on the present operation condition some reasonable control methods are proposed.
Keywords :
HVDC power transmission; current distribution; distribution networks; power grids; power transformers; DC current distribution model; DC magnetic bias; Hami AC power grid topology structure; Tian-Zhong HVDC transmission project; coupled field-circuit method; grounding current; transformer; Current distribution; Grounding; HVDC transmission; Power grids; Resistance; Substations; DC current distribution model; DC magnetic bias; control measure; the HVDC transmission project; the present AC power grid in Hami Area;
Conference_Titel :
Advanced Research and Technology in Industry Applications (WARTIA), 2014 IEEE Workshop on
Conference_Location :
Ottawa, ON
DOI :
10.1109/WARTIA.2014.6976467
