Order Publications

Reference: 694

Technical Brochures

Ground potential rise at overhead AC transmission line structures during power frequency faults


The awareness of the potential safety risk is paramount in the safe operation of overhead transmission lines. The consequence of potential safety hazard from touch, step and transferred voltages due to Ground Potential Rise (GPR) cannot be ignored or under-estimated. This Technical Brochure provides a brief overview on the source of the problem, i.e. ground current from line fault and line grounding system that is sensitive to the soil resistivity. The safety risk mitigation may require stringent measures at locations where public access is frequent and to a lesser degree when the access is extremely rare. The GPR mitigation should be designed to ensure any potential hazards be kept to acceptable levels.


File Size: 5 MB

Pages NB: 83

Study Committee:  B2 ?

WG (TF): WG B2.56

Year: 2017

FREE free
Non member
FREE free

Your AccountYour Account


may download free of charge all publications including most recent ones


Non Members

may download free of charge publications over three years old and purchase all publications


A CIGRE membership opens up a range of options for accessing real world power system knowledge from across the whole world.

>> Follow this link for more information