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FROM THE POWER GENERATION DEPARTMENT...
DROOP AND ISOCHRONOUS IN MARK VI
Posted by abdalla on 12 February, 2009 - 2:32 am
hi all
I am going to work in old plant !ohn "rown# $ram% it was &k
II upgraded to &k 'i( )hisplant is not tied with network and it
work at the emergen*y only in summer(
"ut what I heared they $ound problem when one unit in droop
system assume it is + &the load is one *hiller when they need
to put the se*ond *hiller in ser'i*e the $irst *hiller
take trip by under 'oltage( "ut i$ there is two unit ) in
ser'i*e ea*h one . & or one
unit in iso*hronuse this phenomena did not happened( /o what is
the reason
/e*ond thing is: iso*hronous*onstant $reuen*y by automati*ally
adusting output
power( 4roop $reuen*y is automati*ally adusted but when power
in*rease the
$reuen*y de*rease a bit( &y uestion is how this happen
logi*ally I$ you ha'e
do*ument e5plain in details the di$$eren*e I will be thanks(
6nother thing, in the iso*hronous mode is the load in*reased the
& in*reasing withregardless the set point or it is *ontrolled
by the turbine set point e'en the load in*reased
best regards(7eply to this post(((
Posted by 8/6 on 12 February, 2009 - 2:3 pmou seem to be saying
that these two units do not syn*hroni;e to any larger grid
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s*heme to really spe*ulate on that aspe*t(
@astly, you say you AheardA this( 6 lot o$ things that allegedly
happen in a power plantduring an e'ent like this are ust, well,
what someone thought happened =or= some e'ents
are mistakenly linked to others( Bne shouldn
