Predicting AC Interference
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Author: Technical Toolboxes
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Level: Advanced
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Study time: 1.5 hour
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Course overview
How can engineers accurately predict AC interference on pipelines that share corridors with high-voltage power lines?
What role do factors such as coating resistance, soil resistivity, and pipeline geometry play in determining induced voltages?
How can induced and fault voltages be modeled and mitigated to ensure pipeline safety and compliance?
In this 1.5-hour self-paced course, participants will explore the principles and calculations used to predict AC interference on buried pipelines. Learners will gain a deep understanding of pipeline electrical characteristics, longitudinal electrical field (LEF) analysis, induced and fault voltage modeling, and methods for sectioning pipelines for AC analysis. The course also introduces the use of distributed source theory and Thevenin equivalent circuits to simulate voltage behavior under steady-state and fault conditions.
In this 1.5-hour self-paced course, participants will explore the principles and calculations used to predict AC interference on buried pipelines. Learners will gain a deep understanding of pipeline electrical characteristics, longitudinal electrical field (LEF) analysis, induced and fault voltage modeling, and methods for sectioning pipelines for AC analysis. The course also introduces the use of distributed source theory and Thevenin equivalent circuits to simulate voltage behavior under steady-state and fault conditions.
By the end of the course, participants will be able to identify high-risk AC interference scenarios, perform preliminary assessments, and apply appropriate mitigation strategies to ensure the safe, reliable, and compliant operation of pipelines in proximity to high-voltage power lines.
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Video time: 1.5 hour
David Willoughby
Cathodic Protection Design SME, Former Director RK&K
ABOUT DAVID
Mr. Willoughby has 40 years of experience in engineering, pipeline design, corrosion control, and management in the petroleum and utilities pipeline industry. His experience includes gas transmission and distribution systems, petroleum facilities, and water/sewer pipelines from conception through design, construction and testing, economic evaluation, and project field supervision.
Mr. Willoughby has been responsible for the design, permitting, inspection, and construction administration of numerous horizontal directional drills (HDD) on pipeline projects.
He is the author of several articles and two books published by McGraw-Hill, The Plastic Piping Handbook (2002) and Horizontal Directional Drilling (2005).
Mr. Willoughby provides HDD training to the pipeline and utility industries. He has presented at the engineering workshop at N.C. Utilities Commission Office of the Pipeline Safety Conference and the Southern Gas Association Annual Conference.
Mr. Willoughby’s HDD training is used to provide Professional Development Hours (PDU) for professional engineers in many states, including Texas.
