Title :
New Method of Measuring the Zero Sequence Parameters of Double-Circuit EHV/UHV Transmission Lines
Author :
Li, Chuanqi ; Hu, Zhijian ; Jiang, Meiling ; Zhang, Ziyong
Author_Institution :
Sch. of Electr. Eng., Wuhan Univ., Wuhan, China
Abstract :
For EHV/UHV transmission lines, the effects of distribution capacitance of lines on the parameter measurement can´t be neglected. A new method of measuring the zero sequence parameters of double-circuit EHV/UHV transmission lines with mutual inductance based on distribution parameter model and GPS technology is proposed. The distribution parameter model of double-circuit transmission lines is established and the independent measurement cases for both live line and no live line measurement are given. The calculation formulae for solving the zero-sequence parameters of lines are derived. The parameter measurement for double-circuit EHV/UHV transmission lines from 300 km to 1600 km is simulated and compared with the traditional measurement method. Simulation results have validated that the new method can greatly improve the accuracy of the parameter measurement of EHV/UHV transmission lines.
Keywords :
Global Positioning System; capacitance measurement; power transmission lines; GPS technology; distance 300 km to 1600 km; distribution capacitance effects; distribution parameter model; double-circuit EHV-UHV transmission line; independent measurement; parameter measurement; zero sequence parameters; Capacitance; Circuit breakers; Grounding; Inductance; Power transmission lines; Transmission line measurements; Voltage measurement;
Conference_Titel :
Power and Energy Engineering Conference (APPEEC), 2012 Asia-Pacific
Conference_Location :
Shanghai
Print_ISBN :
978-1-4577-0545-8
DOI :
10.1109/APPEEC.2012.6307307
