The basic law and influencing factor of DC bias distribution in AC power which is near the grounding electrode of 800kV HVDC

Author

Sun Fan ; Xu Guanghu ; Zhang Yuan ; Wu Biao ; Ma QingYong

Author_Institution

Xinjiang Electr. Power Res. Inst., Xinjiang Electr. Power Co. of State Grid, Urumchi, China

fYear

2014

fDate

20-22 Oct. 2014

Firstpage

2417

Lastpage

2421

Abstract

According to the test results of DC bias in hami AC power system when 800kV hami-zhenzhou Transmission on Transmission Line under single pole mode of earth operating way, the basic law of current distribution of AC power is conclude the system, and the influence of AC power network mode to DC bias current distribution is analyzed Suggest to chose 80km as the govern redius and configure the grounding points and grounding modes of AC transformers in AC power network, mean while, offer a proposal for the new site selection of HVDC grounding pole and design.

Keywords

HVDC power transmission; current distribution; earth electrodes; power transformer insulation; AC power network mode; AC transformers; DC bias current distribution; HVDC grounding pole; distance 80 km; earth operating way; grounding modes; grounding points; hami AC power system; hami-zhenzhou transmission; single pole mode; transmission line; voltage 800 kV; Circuit faults; Grounding; HVDC transmission; Power transformers; Substations; Switches; DC bias; Electric potential; HVDC transmission; transformer;

fLanguage

English

Publisher

ieee

Conference_Titel

Power System Technology (POWERCON), 2014 International Conference on

Conference_Location

Chengdu

Type

conf

DOI

10.1109/POWERCON.2014.6993951

Filename

6993951