Mr type r switch
Download
1 / 28

MR type R switch - PowerPoint PPT Presentation


  • 82 Views
  • Uploaded on

MR type R switch. 4 resistors. Example Canada 3.4 and 6 Ohms. Phase shifting transformer 840 MVA 240kV. MCa - Main contact (copper) opening. First region. MSCa - Main switching contact opens. Adding resistance – current drops. Second region – subtracting turns.

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 ' MR type R switch' - gail-martin


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
Mr type r switch

MR type R switch

4 resistors


Example canada 3 4 and 6 ohms
Example Canada 3.4 and 6 Ohms

Phase shifting transformer 840 MVA 240kV



First region
First region

MSCa - Main switching contact opens



Second region subtracting turns
Second region – subtracting turns

TCa2 - Transition contact closes

Connecting onto the contact at “potential” and lower resistance



Second region adding turns
Second region – adding turns

Connecting onto the contact with potential at lower resistance








Influence of l

Influence of L

More or less turns

Phase shifter



Less turns
Less turns

4th segment influenced


Oltc problem

OLTC problem ?

890MVA 500kV/25kV

Malaysia


Nameplate 2 type r oltcs in parallel
Nameplate2 type R OLTCs in parallel



Nameplate
Nameplate

Double tap changer

windings in parallel

Y connected

Fine-coarse regulation


Double time on odd transitions
Double time on ODD transitions

Transition 100mSec





ad