Title :
Calculation of Electric-field Distribution and Research on Characteristics of Shielding Ring along the Long-rod Post Porcelain Insulators Used in 1000kv System
Author :
Wu, Xinqiao ; Peng, Zongren ; Liu, Peng ; Yu, Zhong
Author_Institution :
State Key Lab. of Electr. Insulation & Power Equipment, Xi´´an Jiaotong Univ.
Abstract :
In this paper, the finite element method is used to calculate the three-dimensional electric-field distribution of long-rod post porcelain insulators used in 1000 kV system. The electric-field distribution is simulated in the condition of varied position, varied major radius and varied section dimension of the shielding ring. The effect of these factors to the external insulation characteristics of post porcelain insulators is analyzed. The electric-field distribution at the line side and the grounding flange can be effectively improved by proper distribution of shielding ring and the optimization of the shielding ring structure. This provide calculation gist to improve the characteristics of shielding ring used in 1000 kV long-rod post porcelain insulators and the reliability of safe operation in 1000 kV system
Keywords :
electric fields; electrical safety; finite element analysis; porcelain insulators; power transmission lines; power transmission reliability; shielding; 1000 kV; external insulation characteristics; finite element method; long-rod post porcelain insulators; reliability; safe operation; shielding ring characteristics; shielding ring dimension; shielding ring structure optimization; three-dimensional electric-field distribution calculation; Dielectrics and electrical insulation; Electromagnetic modeling; Finite element methods; Flanges; Ground support; Grounding; Laboratories; Maxwell equations; Porcelain; Stress; Electric-field distribution; Finite element method; Long-rod post porcelain insulators; the characteristic of shielding ring;
Conference_Titel :
Properties and applications of Dielectric Materials, 2006. 8th International Conference on
Conference_Location :
Bali
Print_ISBN :
1-4244-0189-5
Electronic_ISBN :
1-4244-0190-9
DOI :
10.1109/ICPADM.2006.284250
