Abstract
The interaction between high-voltage transmission lines and nearby buried metallic pipelines can create electromagnetic fields that induce potentially dangerous voltages, posing safety risks. This paper explores the impact of electromagnetic interference on underground water pipelines located near a high-voltage transmission line (up to 380 kV) in Riyadh, part of the Saudi national grid. The study found that certain sections of the pipelines did not experience voltages beyond the standard safety limits under normal operating conditions. However, during Line-to-Ground fault scenarios (such as short circuits), the induced voltages exceeded safe thresholds. To mitigate this risk, gradient control wires were implemented to reduce the induced voltage and maintain compliance with safety standards. The research showed that adjusting the wire resistance could effectively lower these voltages, with a 10mΩ resistance proving adequate for this specific line. The findings and recommendations may vary depending on the specific design of the overhead line and the local geography. DOI: https://doi.org/10.52783/pst.1497
Published Version
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