Menu
Search
Filters
Close
Menu

Celebrate World Corrosion Awareness Day with 20% off eCourses and eBooks with code WCAD2024 at checkout!

The Evolution of AC Predictive and Mitigation Software

Picture for The Evolution of AC Predictive and Mitigation Software
Available for download

This paper outlines the essential features required in a software package that has sufficient capability to accurately predict and mitigate AC induction effects upon pipelines for a majority of rights-of-way.

Product Number: 51317--8912-SG
ISBN: 8912 2017 CP
Author: John Dabkowski
Publication Date: 2017
Industry: Energy Generation
$0.00
$20.00
$20.00

Approximately forty years ago the first software for calculating AC induced potentials on buried pipelines collocated with overhead electric transmission lines emerged. Its content reflected the needs at the time. For example, the analysis of induction effects for simple rights-of-way containing a limited number of transmission lines and parallel pipelines. In the interim, rights-of-way have become more complex requiring updated software to reflect the prevailing state of the art, which by virtue of academic research and field experience has been continuously advanced. This paper outlines the essential features required in a software package that has sufficient capability to accurately predict and mitigate AC induction effects upon pipelines for a majority of rights-of-way. Limiting the software suite to only the essential features provides for a more friendly user interface and a "short learning curve". A rationale for the software considered minimally essential is provided.

Initial topics discussed are optimum pipeline segmentation, and the limitations of a single-layer soil resistivity model.

For steady state operation, the effects of transmission line current imbalance, and a new mitigation methodology required when jointly mitigating pipe potential and current density are discussed.

Transmission line fault analyses include software requirements for calculating the current injection level at the faulted tower and the concurrent current split factor, which determine the magnitudes of the incident inductive and conductive coupling components.

Keywords: AC pipeline induction, AC pipeline mitigation, pipeline AC interference, AC pipeline corrosion, soil resistivity, fault current, transmission line imbalance, AC corrosion current density

Approximately forty years ago the first software for calculating AC induced potentials on buried pipelines collocated with overhead electric transmission lines emerged. Its content reflected the needs at the time. For example, the analysis of induction effects for simple rights-of-way containing a limited number of transmission lines and parallel pipelines. In the interim, rights-of-way have become more complex requiring updated software to reflect the prevailing state of the art, which by virtue of academic research and field experience has been continuously advanced. This paper outlines the essential features required in a software package that has sufficient capability to accurately predict and mitigate AC induction effects upon pipelines for a majority of rights-of-way. Limiting the software suite to only the essential features provides for a more friendly user interface and a "short learning curve". A rationale for the software considered minimally essential is provided.

Initial topics discussed are optimum pipeline segmentation, and the limitations of a single-layer soil resistivity model.

For steady state operation, the effects of transmission line current imbalance, and a new mitigation methodology required when jointly mitigating pipe potential and current density are discussed.

Transmission line fault analyses include software requirements for calculating the current injection level at the faulted tower and the concurrent current split factor, which determine the magnitudes of the incident inductive and conductive coupling components.

Keywords: AC pipeline induction, AC pipeline mitigation, pipeline AC interference, AC pipeline corrosion, soil resistivity, fault current, transmission line imbalance, AC corrosion current density

Product tags
Also Purchased
Picture for AC Interference and Mitigation: Heartland Case Study
Available for download

AC Interference and Mitigation: Heartland Case Study

Product Number: 51317--9461-SG
ISBN: 9461 2017 CP
Author: Matthew Lechelt
Publication Date: 2017
$20.00

Challenges associated with coordinating the modelling, design, and installation of an alternating current interference and mitigation systems. The project consisted of a 65 kilometer long double circuit 500 kilovolt (kV) overhead transmission in a heavily congested right-of-way corridor with more than 80 pipelines.
Picture for The AC Close Interval Survey and Other Common AC Measurement Errors
Available for download

The AC Close Interval Survey and Other Common AC Measurement Errors

Product Number: 51317--9455-SG
ISBN: 9455 2017 CP
Author: Wolfgang Fieltsch
Publication Date: 2017
$20.00

The measurement of induced AC voltages along a pipeline is a primary indicator of electrical safety hazards and AC corrosion risks under operating powerlines. This paper addresses several fallacies, misconceptions and common errors related to the measurement of these AC induced voltages.

 
Picture for 03703 METHODOLOGIES FOR AC MITIGATION
Available for download

03703 METHODOLOGIES FOR AC MITIGATION

Product Number: 51300-03703-SG
ISBN: 03703 2003 CP
Author: J. Dabkowski
$20.00
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support