Title :
Research on shielding overvoltage of single-core cable
Author :
Niu, H.Q. ; Wang, X.B. ; Shi, Y.X. ; Zhang, Y.
Author_Institution :
Sch. of Electr. Power, South China Univ. of Technol., Guangzhou
Abstract :
High voltage single-core cable is widely used in urban electrical transmission. If lightning strikes on an overhead line connected with a cable, an over voltage will invade into this cable and induct an over voltage in its shielding. In this paper, based on the typical grounding method of cable shielding and the connection with power system in Guangzhou Power Grid, the ATP models are set up; the shielding lightning over voltages and shielding switching over voltages are simulated. To validate the correctness of models, calculation, several impulsive trials were done in real cables of Guangzhou power grid system.
Keywords :
cable shielding; power cables; power overhead lines; ATP models; Guangzhou power grid; lightning strikes; overhead line; shielding overvoltage; shielding switching; single-core cable; urban electrical transmission; Cable shielding; Power engineering; Voltage control; Alternative transients program; cable; high voltage; impulse testing; lightning; over voltage; shielding; simulation; switching;
Conference_Titel :
Power Engineering Conference, 2007. IPEC 2007. International
Conference_Location :
Singapore
Print_ISBN :
978-981-05-9423-7
