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A method for evaluation and mitigation of AC induced voltage on buried gas pipelines

Vakilian, M ; Sharif University of Technology | 2002

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  1. Type of Document: Article
  2. Publisher: Sharif University of Technology , 2002
  3. Abstract:
  4. This paper has been prepared, based on reports regarding extraordinary induced ac voltage on buried gas pipelines in residential and industrial areas of the capital city of Tehran, especially in densely populated central areas. Also, some reports are considered on the existence of ac induced voltage in buried gas pipelines under the overhead transmission lines, for example, one case located 80 Km to the west of Tehran, in an agricultural region of the town of Abyek. In this paper, the results of an extensive theoretical, experimental and practical investigation and implementation of methods carried out during the last two years are introduced. Furthermore, this paper includes evaluation of the existence of ac induced voltage in gas pipelines, their effect on cathodic protection systems and the pipelines coatings. A method will be introduced for determination of electromagnetic induced ac voltage in gas pipelines under overhead transmission lines. Finally, a method of ac induced voltage mitigation for application on buried gas pipelines under overhead transmission lines is introduced and verified by application in the above mentioned region, which resulted in a complete cancellation of induced ac voltage in the pipeline. A computer program is developed based on these methods
  5. Keywords:
  7. Source: Scientia Iranica ; Volume 9, Issue 4 , 2002 , Pages 311-320 ; 10263098 (ISSN)
  8. URL: https://www.sid.ir/paper/289498/en