HVDC advanced analysis methods for grounding design and DC interference mitigation techniques

Abstract

This paper presents advances made in HVDC grounding design techniques and the DC interference effects generated by HVDC ground electrodes on neighboring metallic utilities, with a particular emphasis on buried pipelines (oil, gas, water). The influence of soil structure on the performance of ground electrodes and on interference levels is demonstrated. A realistic case is modeled in detail to illustrate the accuracy, flexibility, and capabilities of these methods.