On the Power Lines—Electromagnetic Shielding Using Magnetic Steel Laminates

2021 · Unclear · Insufficient evidence

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UnclearInsufficient evidencePaper 993

The paper proposes using highly permeable magnetic steel sheets/laminates for passive shielding of electric and magnetic fields around overhead or underground high-voltage transmission lines. Finite element analysis (FEA) simulation results showed good agreem…

Study snapshot

Publicationmanual · 2021

Study typeengineering

Reported directionUnclear

Evidence ratingInsufficient

Abstract

On the Power Lines—Electromagnetic Shielding Using Magnetic Steel Laminates Tatiana Damatopoulou, Spyros Angelopoulos, Christos Christodoulou, Ioannis Gonos, Evangelos Hristoforou and Antonios Kladas. On the Power Lines—Electromagnetic Shielding Using Magnetic Steel Laminates.Energies 2021, 14(21): 7215. 2 November 2021. doi:10.3390/en14217215 (This article belongs to the Special Issue Advanced Electrical Measurements Technologies) Abstract Protection against the electromagnetic fields around high-voltage transmission lines is an issue of great importance, especially in the case of buildings near power lines. Indeed, the developed fields can be harmful for the habitants and electrical/electronic devices, so the implementation of appropriate measures to address the above electromagnetic interference issue is necessary in order to ensure the safety of both human beings and equipment. Several practices have been proposed to reduce the electric and the magnetic fields around overhead and underground transmission lines (minimum distance, shielded cables, anechoic chamber etc.). In this context, the scope of the current paper is the use of highly permeable magnetic sheets for shielding purposes, along with the development of an appropriate procedure, based on finite element analysis (FEA) for the efficient design of passive shielding. The simulation results are compared with laboratory measurements in order to confirm the adequacy of the proposed methodology. The good agreement between the FEA outcomes and the experimental results confirms that the developed FEA tool can be trustfully used for the design of the shielding means in the case of overhead or underground power lines. Open access paper: mdpi.com

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeengineering

Effect directionunclear

PopulationNot supplied

Sample sizeNot supplied

ExposureELF

Evidence strengthInsufficientConfidence: 78% · Peer reviewed: yes

Main findings

Outcomes measured

Electric field reduction/shielding effectiveness around transmission lines
Magnetic field reduction/shielding effectiveness around transmission lines
Agreement between finite element analysis (FEA) simulations and laboratory measurements for shielding design

Limitations

No quantitative shielding performance metrics (e.g., dB reduction) reported in the provided abstract
No details provided in the abstract on measurement setup, frequencies, distances, or number of experiments
No human health outcomes assessed; focus is on engineering design/validation

View raw extracted JSON

{
  "study_type": "engineering",
  "exposure": {
    "band": "ELF",
    "source": "high-voltage transmission lines (overhead/underground power lines)",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": null,
  "outcomes": [
    "Electric field reduction/shielding effectiveness around transmission lines",
    "Magnetic field reduction/shielding effectiveness around transmission lines",
    "Agreement between finite element analysis (FEA) simulations and laboratory measurements for shielding design"
  ],
  "main_findings": "The paper proposes using highly permeable magnetic steel sheets/laminates for passive shielding of electric and magnetic fields around overhead or underground high-voltage transmission lines. Finite element analysis (FEA) simulation results showed good agreement with laboratory measurements, supporting use of the developed FEA procedure for shielding design.",
  "effect_direction": "unclear",
  "limitations": [
    "No quantitative shielding performance metrics (e.g., dB reduction) reported in the provided abstract",
    "No details provided in the abstract on measurement setup, frequencies, distances, or number of experiments",
    "No human health outcomes assessed; focus is on engineering design/validation"
  ],
  "evidence_strength": "insufficient",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "electromagnetic shielding",
    "magnetic steel laminates",
    "high-voltage transmission lines",
    "power lines",
    "passive shielding",
    "finite element analysis",
    "laboratory measurements",
    "electromagnetic interference"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.22,
      "reason": "Focuses on EMF around high-voltage transmission lines, relevant to power-line environments (though not explicitly occupational in the abstract)."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.3390/en14217215
PubMed: Not supplied

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