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TITLE COURSE

ELF Theory and measurements (Extremely Low Frequency) and regulations

DESCRIPTION

The course aims to provide the knowledge necessary for performing environmental measurements of low frequency CEM in accordance with technical regulations and laws.

HOW THE COURSE IS STRUCTURED

Theoretical session with projection slides. Practical session. Questionnaire for the evaluation of learning.

COURSE DURATION

2 days

PROGRAM

Introduction

  • Time-varying static electric and magnetic field
  • Maxwell equation
  • Natural sources of static electric and magnetic field
  • Field dependence with the distance (reactive Fresnel and fraunhofer field regions)
  • Electromagnetic wave polarization

Electric power transmission

  • Definitions of power (current, active, complex, apparent and reactive)
  • Three-phase system
  • Remarkable properties of symmetrical and balanced three-phase systems
  • Performance of three-phases systems

Airlines and cables

  • Types of line
  • Definition of line, section and Span
  • Components (pylon,ground conductor,insulator)
  • Corona discharge
  • two conductors-bundles, three conductors-bundles

Misure ambientali con analizzatore di spettro

  • Types of line
  • Definition of line, section and Span
  • Components (pylon,ground conductor,insulator)
  • Corona discharge
  • two conductors-bundles, three conductors-bundles

Electrical and magnetic characterization of the transmission lines

  • Polarization of the electric and magnetic field is produced by a power line
  • Voltage, current-dependence
  • Height of the line
  • Geometric configuraion of the conductors
  • Phases configuration
  • Distance from the pylons and from the longitudinal axis
  • Transformers stations and substations
  • Underground cable lines
  • Mitigation techniques of magnetic field produced by airlines
  • Split phase
  • Passive compensation

Magnetic field shieldings

Magnetic induction in railway traction systems

Other sources of static magnetic field and ELF

  • Industrial sources
  • Medical applications

Time-varying static electric and magnetic field measurements

  • Sensors coil
  • Hall effect sensors
  • Capacity sensors
  • Pockels effect sensors
  • Electric and magnetic field measurements (cei 211-6)
  • Technical measurement report

Regulation

  • The scientific rationale of the legislation
  • Electrical characterization of tissues
  • Mechanisms of interaction of low and high frequency
  • Icnrp 1994 (0-1Hz) and 1998 ( 0-10 GHz ) guide lines
  • Evolution of the legislation on power lines
  • 36/01 Frame-work law
  • Implemented decrees July 8, 2003
  • Respect zones calculation:
    • May 29, 2008 decree
    • Approval of the methodology for the determination of respect zones for the power lines
  • 2004/40/CE directive

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