Cathodic Protection of Pipeline Using Distributed Control System
Joint Authors
Deshpande, D. M.
Agnihotri, Ganga
Jayapalan, Gopalakrishnan
Source
Chinese Journal of Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-7, 7 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-06-16
Country of Publication
Egypt
No. of Pages
7
Main Subjects
Engineering Sciences and Information Technology
Abstract EN
Distributed control system (DCS) is available in most of the compressor stations of cross-country pipeline systems.
Programmable logic controller (PLC) is used in all the intermediate pigging (IP) stations/sectional valve (SV) stations to collect the field data and to control the remote actuated valves.
This paper presents how DCS or PLC can be used for cathodic protection of gas pipelines.
Virtual instrumentation (VI) software is used here for simulation and real-time implementation purpose.
Analog input channels available in DCS/PLC can be used to measure pipe to soil potential (PSP) with the help of half-cell and voltage transducer.
Logic blocks available in DCS can be used as low selector switch to select the lowest PSP.
Proportional-integral (PI) controller available in DCS/PLC can be used for taking the controlling action.
PI controller output varies the firing angle of AC phase controller.
Phase controller output is rectified, filtered, and fed to the pipeline as cathodic protection current.
Proposed scheme utilizes existing infrastructure to control pipeline corrosion.
American Psychological Association (APA)
Jayapalan, Gopalakrishnan& Agnihotri, Ganga& Deshpande, D. M.. 2014. Cathodic Protection of Pipeline Using Distributed Control System. Chinese Journal of Engineering،Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-490115
Modern Language Association (MLA)
Jayapalan, Gopalakrishnan…[et al.]. Cathodic Protection of Pipeline Using Distributed Control System. Chinese Journal of Engineering No. 2014 (2014), pp.1-7.
https://search.emarefa.net/detail/BIM-490115
American Medical Association (AMA)
Jayapalan, Gopalakrishnan& Agnihotri, Ganga& Deshpande, D. M.. Cathodic Protection of Pipeline Using Distributed Control System. Chinese Journal of Engineering. 2014. Vol. 2014, no. 2014, pp.1-7.
https://search.emarefa.net/detail/BIM-490115
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-490115