Title :
Research on the Voltage-Sharing Performance of 500kV Gapless MOA on Power Lines
Author :
Liu, Peng ; Peng, Zongren ; Wu, Xinqiao ; Yu, Zhong
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equipment, Xi´´an Jiaotong Univ.
Abstract :
In this paper, by using finite element analysis(FEA) and boundary element analysis(BEA), the potential distribution of 500kV Gapless MOA on Power Lines is calculated. Considering towers, power lines, grading rings and etc, the position and size of grading rings are adjusted to optimize the structure. The results of FEA and BEA numerical calculation indicate that the resistor of MOA at the line side would bear a very high voltage without grading ring or with unsuitable grading rings. While the 500kV Gapless MOA is used on tower, fitting 3 grading rings only at the line side and no grading ring at the tower side, would realize the uniformity of the potential distribution, and the non-uniform coefficient of voltage distribution is no more than 9.50%.
Keywords :
arresters; boundary-elements methods; finite element analysis; lightning protection; poles and towers; power overhead lines; power transmission protection; 500 kV; FEA; MOA resistor; boundary element analysis; finite element analysis; gapless MOA; grading rings; lightning accident; metal oxide arrester; potential distribution; power lines; structure optimization; towers; voltage distribution; voltage-sharing performance; Arresters; Dielectrics; Finite element methods; Lightning; Poisson equations; Poles and towers; Power transmission lines; Resistors; Switches; Voltage control; BEA; FEA; Metal oxide arrester (MOA); Non-uniform coefficient;
Conference_Titel :
Properties and applications of Dielectric Materials, 2006. 8th International Conference on
Conference_Location :
Bali, Indonesia
Print_ISBN :
1-4244-0189-5
Electronic_ISBN :
1-4244-0190-9
DOI :
10.1109/ICPADM.2006.284303
