Menu
Search
Filters
Close
Menu

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

High Voltage Direct Current Interference on Buried Pipelines: Case Study and Mitigation Design

Picture for High Voltage Direct Current Interference on Buried Pipelines: Case Study and Mitigation Design
Available for download

Field tests found that a natural gas pipeline system was interfered by a high voltage direct current electrode. Interference level was computed and agreed with measured values, validating the model. The effectiveness of various mitigation methods was computed and discussed,

 

Product Number: 51317--9049-SG
ISBN: 9049 2017 CP
Author: Runzhi Qin
Publication Date: 2017
Industries: Energy Generation , Cathodic Protection
$0.00
$20.00
$20.00

High Voltage Direct Current systems are developing fast in China. But the electrodes in monopolar modes may introduce DC interferences on buried metallic pipelines nearby and increase the risk of corrosion and hydrogen embrittlement. Focusing on a real case of HVDC interference this paper aimed to study the field test the numerical simulation calculation and the design of mitigation.Firstly field tests found that a natural gas pipeline system was interfered by a HVDC electrode system in Guangdong province. The pipe-to-soil on potentials along the pipe had deviations up to 300V posing severe threats to safety operation of the pipeline system. Then the numerical simulation technique was used to model the electrode and pipeline system based on field parameters. The interference level was computed and the results showed good agreements with the measured values which indicated the validity of the model. Finally for the purpose of interference elimination the effectiveness of various mitigation methods was computed and discussed including insulating joints sacrificed anodes drainage system zinc ribbon drainage system impressed current drainage system etc. Based on the results above the integrated mitigation method of this interference case was designed.

Key words: HVDC, interference, field test, mitigation

High Voltage Direct Current systems are developing fast in China. But the electrodes in monopolar modes may introduce DC interferences on buried metallic pipelines nearby and increase the risk of corrosion and hydrogen embrittlement. Focusing on a real case of HVDC interference this paper aimed to study the field test the numerical simulation calculation and the design of mitigation.Firstly field tests found that a natural gas pipeline system was interfered by a HVDC electrode system in Guangdong province. The pipe-to-soil on potentials along the pipe had deviations up to 300V posing severe threats to safety operation of the pipeline system. Then the numerical simulation technique was used to model the electrode and pipeline system based on field parameters. The interference level was computed and the results showed good agreements with the measured values which indicated the validity of the model. Finally for the purpose of interference elimination the effectiveness of various mitigation methods was computed and discussed including insulating joints sacrificed anodes drainage system zinc ribbon drainage system impressed current drainage system etc. Based on the results above the integrated mitigation method of this interference case was designed.

Key words: HVDC, interference, field test, mitigation

Product tags
Also Purchased
Picture for Combined Cathodic and Anodic Interference in Pipeline - An Analysis
Available for download

Combined Cathodic and Anodic Interference in Pipeline - An Analysis

Product Number: 51317--9004-SG
ISBN: 9004 2017 CP
Author: Rituraj Mishra
Publication Date: 2017
$20.00

In this paper exhaustive field study trials to monitor the pipe to soil potential over an extended time period and subsequent analysis of data has been discussed with reference to the critical Combined Cathodic and Anodic Interference phenomena observed on pipelines.
Picture for 10102 High Voltage Direct Current Interference with Underground/Underwater Pipelines
Available for download

10102 High Voltage Direct Current Interference with Underground/Underwater Pipelines

Product Number: 51300-10102-SG
ISBN: 10102 2010 CP
Author: Peter Nicholson
Publication Date: 2010
$20.00

This paper will outline the effect of stray current that originates from an HVDC  transmission system that runs parallel to and crosses a crude oil and natural gas pipeline system.
Picture for Study on the Mechanism and Influencing Factors of High Voltage Direct Current Interference
Available for download

Study on the Mechanism and Influencing Factors of High Voltage Direct Current Interference

Product Number: 51317--9293-SG
ISBN: 9293 2017 CP
Author: Zitao Jiang
Publication Date: 2017
$20.00

High voltage direct current (HVDC) transmission results in a large direct current will into the earth. This may cause interference on a buried pipeline even though it is far from the earth electrode. In this work, numerical simulation was used to study the mechanism and influencing factors of HVDC interference.
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