Investigation of Statistical Distribution of Energization Overvoltages in 380 kV Hybrid OHL-Cable Systems

Switching operations in power systems can produce significant overvoltages under specific circumstances. With the increasing application of underground cables in transmission systems, the statistical distribution of energization overvoltages is expected to change substantially due to the different electrical characteristics of cables and OHLs....

Statistical Analysis of Energization Overvoltages in EHV Hybrid OHL-Cable Systems

Energization overvoltages are among the severest overvoltages stressing insulations of EHV power system components. Since these overvoltages have a statistical nature, the insulation level should be determined with the use of a statistical approach by which the distribution of overvoltages is calculated. Literature has properly studied the...