Title :
Investigation of corona phenomenon for a reduced-scale model of hybrid AC and DC lines
Author_Institution :
Dept. of Electr. Eng., Mansoura Univ., Egypt
Abstract :
A reduced-scale model of a single-phase ac (50 Hz) and a unipolar dc was developed with a suitable scaling factor where the applied voltages were varied up to 80 kV. Many factors were examined to show their effects on the I-V characteristics and on the corona current oscillograms. Also, a two-dimensional field computation program based on the charge simulation method (CSM) was used to model both the hybrid analog and an ac 132 kV double-circuit transmission lines in order to compute the ground-level electric field, number of streamers (for a constant time duration) and corona inception voltage for different arrangements and energization types and levels
Keywords :
corona; electric fields; oscillographs; power transmission lines; 132 kV; 50 Hz; I-V characteristics; charge simulation method; corona phenomenon; current oscillograms; double-circuit transmission lines; energization types; ground-level electric field; hybrid AC/DC lines; inception voltage; reduced-scale model; streamers; two-dimensional field computation; Analog computers; Circuits; Computational modeling; Conductors; Corona; Electric fields; Poles and towers; Surges; Transformers; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on
Conference_Location :
Millbrae, CA
Print_ISBN :
0-7803-3580-5
DOI :
10.1109/CEIDP.1996.564544
