The increasing usage of hybrid cable-overhead lines raises concerns over the protection short cable sections against lightning surges, because voltage build-up in section. To set a simulation model phenomenon is time consuming, with numerous parameters impacting overvoltage. This paper (Part I) presents formulas able to perform fast estimation maximum overvoltage at line transition point event ...

Abstract Arrester is used to protect various electrical equipment in the power system from lightning overvoltage, working frequency transient overvoltage impact and damage. Zinc oxide arrester widely system. Creepage distance a necessary item of performance test. It project for factory testing centralized network access testing. At present, measurement creepage mainly adopts artificial method p...

The vulnerability of the UHV porcelain arrester is very high under strong earthquake. To rise seismic reliability of the UHV porcelain arrester, a new type lead damper, which is a new patent product, is installed at the bottom of the equipment. To investigate the damping effect of the dampers, the experimental research and finite element analysis on seismic behavior of the UHV porcelain arreste...

In order to understand the thermal and electrical properties of surge arrester under standard climatic conditions, it would be useful evaluate heating progression in its different elements. These are constituted heterogeneous materials, which have physical nonlinear along arrester. Temperature predicting solutions for zinc oxide ceramic blocks provide fundamental elements electrothermal materia...

In the operation of broadcasting transmitter, during a lightning storm, comes to frequent surge arrester failures in switchgear transmitter and along 10 kV supply cable (surge arresters section boxes). Analysis strokes is given paper. EMTP simulation loading was conducted. The energy overload due flash with more than one or flashes short time. Recommendations were also for improvement existing ...

This paper describes the possibilities for mathematical modelling of gap-less surge arresters in the simulation software DYNAST. This tool does not belong to standard modelling softwares in the field of electric power engineering. However, it may provide some key advantages when compared to more frequently used software such as EMTP-ATP and MATLAB-Simulink. Description of the metal oxide varist...