some technical characteristic of current limiting reactors l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Some technical characteristic of current-limiting reactors PowerPoint Presentation
Download Presentation
Some technical characteristic of current-limiting reactors

Loading in 2 Seconds...

play fullscreen
1 / 8

Some technical characteristic of current-limiting reactors - PowerPoint PPT Presentation


  • 178 Views
  • Uploaded on

Some technical characteristic of current-limiting reactors. Airtype - reactor linear magnetic behaviour (L - constant) spreading magnetic field around reactor (weak EMC behaviour) damping of reactor noise is difficult space consuming earth-quake withstand capability expensive

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Some technical characteristic of current-limiting reactors' - rosina


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
some technical characteristic of current limiting reactors
Some technical characteristic of current-limiting reactors
  • Airtype - reactor
  • linear magnetic behaviour (L - constant)
  • spreading magnetic field around reactor (weak EMC behaviour)
  • damping of reactor noise is difficult
  • space consuming
  • earth-quake withstand capability expensive

Oiltype – reactor

  • nonlinear magnetic behaviour for high currents (L – decreasing at high currents)
  • almost no electromagnetical radiation outside tank
  • antinoise damping can easily be provided by enclosure or by tank wall damping
  • cooling equipment (radiator bank) free placeable
design of oil type current limiting reactors
Design of oil-type current-limiting reactors
  • limb as gapped core limb without iron core
  • Fe-mass >
  • Cu-mass <
  • total mass >
  • three limb five limb
  • height >
  • Z0 / Z1 ~ 0.8 < 1
  • core induction: - low for short-circuit limiting
  • - normal for power flow controlling (post-failure application)
initial issues to be discussed
Initial issues to be discussed
  • application
  • comparison between oil-type and dry-type - noise request - EMC - space available - impedance (L-I-curve, symmetry between phases) - earth-quake conditions
  • range of magnetic linearity -> impedance at normal and at short-circuit cond.
  • zero-sequence impedance
  • available current level for heat-run test
example 3 series reactor for ngct elstree dr2
Example: 3~ series reactor for NGCT „Elstree DR2“
  • application: post-failure load-flow control
  • cooling: ODAF
  • throuput power: 2000 MVAR
  • reactor power: 400 MVAR
  • nominal current: 2887 A, system voltage: 400 kV
  • induction: 1,3 T @ 2887 A
  • current density: 3,6 A/mm^2
example 3 series reactor for conedison in new york
Example: 3~ series reactor for ConEdison in New York
  • application: short-circuit current limitation and load-flow control
  • cooling: ONAN
  • throuput power: 358 MVAR
  • reactor power: 64 MVAR
  • nominal current: 1500 A / 2800A / 7500 A, system voltage: 138 kV
  • induction: 0,37 T @ 1500 A
  • current density: 2,3 (4,3) A/mm^2