Guide to EHV/HV Cable Sheath Bonding Application Software

This paper introduces a software tool for the sheath bonding design of high voltage power cable systems. The calculation tools for the design of the bonding system are required for supplying the maximum value of the temporary overvoltages obtained for the worst short circuit that can appear in the grid. Sheath overvoltages depend on different factors: on the place where a short circuit appears, on the earth resistance value at each grounding connection and on the designed sheath bonding configuration. The software package uses a general method of circuit analysis adapted to cable systems to determine temporary overvoltages in complex sheath bonding configurations. The developed software allows defining any arbitrary architecture of linked elemental cable sections in order to simulate the…