Fault section detection system for 66 kV underground branch transmission lines using optical magnetic field sensors

There is a risk of alternating current (AC) corrosion on pipelines that are buried in proximity to overhead AC power transmission lines due to induced AC caused by magnetic fields around the power transmission lines. Grounding of the line pipes is generally applied for the mitigation of induced AC. In the present paper, studies were conducted to predict the induced AC level through the measurement of magnetic flux density using magnetic field sensors. The relationship between magnetic flux density and induced AC level was then obtained through theoretical studies. In addition, as a result of field tests conducted on an existing pipeline buried in proximity to power transmission lines, induced AC level could be predicted through the measurement of magnetic flux density using magnetic field sensors above the pipeline route. Magnetic flux density can be measured regardless of the number and location of power transmission lines as well as other metallic structures, and therefore it is expected that the AC prediction method using magnetic field sensors can be applied on the pipelines buried in proximity to multiple power transmission lines and/or to other metallic structures with complicated configuration.

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METHOD OF SYNTHESIS OF CLOSED-LOOP SYSTEMS OF ACTIVE SHIELDING MAGNETIC FIELD OF POWER TRANSMISSION LINES

Tekhnichna Elektrodynamika ◽

10.15407/techned2016.04.008 ◽

2016 ◽

Vol 2016 (4) ◽

pp. 8-10 ◽

Cited By ~ 1

Author(s):

B.I. Kuznetsov ◽

◽

A.N. Turenko ◽

T.B. Nikitina ◽

A.V. Voloshko ◽

...

Keyword(s):

Magnetic Field ◽

Transmission Lines ◽

Closed Loop ◽

Power Transmission ◽

Power Transmission Lines ◽

Closed Loop Systems ◽

Active Shielding

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Recent Development of Sensitivity in Magnetic Field Sensors

IEEJ Transactions on Sensors and Micromachines ◽

10.1541/ieejsmas.137.219 ◽

2017 ◽

Vol 137 (8) ◽

pp. 219-222

Author(s):

Ken-Ichi Arai

Keyword(s):

Magnetic Field ◽

Magnetic Field Sensors

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Transmission line sanitary protective zones. Electromagnetic safety problems

Russian Journal of Occupational Health and Industrial Ecology ◽

10.31089/1026-9428-2019-59-9-736-737 ◽

2020 ◽

pp. 736-736

Author(s):

N. B. Rubtsova ◽

A. Y. Tokarskiy

Keyword(s):

Magnetic Field ◽

Risk Factor ◽

Transmission Lines ◽

General Public ◽

Field Component ◽

Regulatory Requirements ◽

Protection Zones ◽

Electric And Magnetic Fields ◽

Health Risk Factor ◽

The Magnetic Field

The main problems of overhead and cable transmission lines with voltage >=110 kV electric and magnetic fields general public protection are presented. It is shown that it is necessary to develop regulatory requirements for these lines’ sanitary protection zones organization, taking into account the magnetic field component, because its possible health risk factor, up to carcinogenic.

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