New Method of Live Line Measuring the Impedance Parameters of Transmission Lines

Author

Hu, Zhijian ; Guo, Zichun ; Fang, Lihua ; Xie, Xingsheng ; Xu, Zhongzhu ; Gao, Yang ; Liu, Dong ; He, Xixiong

Author_Institution

Sch. of Electr. Eng., Wuhan Univ., Wuhan

fYear

2009

fDate

27-31 March 2009

Firstpage

1

Lastpage

4

Abstract

Based on GPS technology, a new algebra equation method (AEM) of live line measuring the parameters of transmission lines with mutual inductance is proposed. The mathematical model of the new method is explained in detail. The hardware structure of the live line measuring system based on GPS is given. Digital simulation results are shown. Finally, an example of live line measuring six 500-kV transmission lines with mutual inductances in North-East China power grid is given. Comparison of results between AEM and an increment equation method (IEM) is also shown. The field measurement results prove that the new method can meet the need of live line measurement of transmission lines´ inductance parameters.

Keywords

Global Positioning System; algebra; electric impedance measurement; power grids; power transmission lines; GPS technology; North-East China power grid; algebra equation method; increment equation method; live line impedance measurement; mutual inductance; power transmission line; voltage 500 kV; Algebra; Digital simulation; Equations; Global Positioning System; Hardware; Impedance measurement; Inductance measurement; Mathematical model; Power transmission lines; Transmission line measurements;

fLanguage

English

Publisher

ieee

Conference_Titel

Power and Energy Engineering Conference, 2009. APPEEC 2009. Asia-Pacific

Conference_Location

Wuhan

Print_ISBN

978-1-4244-2486-3

Electronic_ISBN

978-1-4244-2487-0

Type

conf

DOI

10.1109/APPEEC.2009.4918517

Filename

4918517