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EEPS 2003M.Tech DEGREE EXAMINATIONS,SEPTEMBER,2011
Second Semester
POWER SYSTEM ENGINEERING
POWER SSTEM OPERATION AND !ONTRO"
SOLUTIONS & SCHEME OF EVALUATION
1. a.Explai !"# #$%%i$ l%a' 'i(pa!$" %) a p%*#+ (,(!# )%+ -##+a!%+( $a(#
*i!"%/! $%(i'#+i !"# li# l%((#(.Al(% '+a* i!( )l%* $"a+! a' #xplai
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1 #!#+i# !"# %p#+a!i ($"#'/l# %) 2-##+a!%+ $a(# %) 100MW #a$" *"%(#
i$+##!al $"a+a$!#+i(!i$( a+# i# ,
The m#n#m$m %o&d on e&ch $n#t #s 10MW .The tot&% %o&d to 'e s$((%#ed #s 1)0MW
1)0
21
=+ P P
*rom +1 &nd +2
P1-/.MW &nd P2- ).1MW
+or
A((/# .2=λ ,*or th#s &%$e o3 λ ,4ener&t#ons
MW P
MW P
.01).0
).1.2
.012.0
0.2.2
2
1
=
−
=
=
−
=
2.1)5..21
=+=+ P P MW
S#nce 4ener&t#on #s 4re&ter th&n the dem&nd there3ore ne6t &((ro6#m&t#on o3 7 sho$%d 'e%ess th&n 2., "et #t 'e 2.8
*or th#s &%$e o3 7,4ener&t#ons &reP1-)./MW
P2-0MWP19P2-15./MW ,:h#ch #s %ess th&n the dem&nd
Ne6t &((ro6#m&t#on to 2.8 :h#ch 4#es 4ener&t#on &reP1-)MW
P2-)./MW
P19P2-1)0./MWIt #s to 'e seen here th&t the 4ener&t#ons &re coner4#n4 &s 'etter &((ro6#m&t#ons to 7 &re
chosen &nd 3#n&%%; & &%$e 'et:een 2.88 &nd 2.8 :#%% 4#e the o(t#m&% 4ener&t#ons
sched$%e
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2.a Explai !"# ',ai$ p+%+ai #!"%' /(#' )%+ /i! $%i!#! %) p%*#+
Fl%*
2.. i($/(( !"# ",'+%-!"#+al ($"#'/li )%+ l%(( l#(( (,(!# )+% )/'a#!al(
I3 & ste&m (%&nt &nd h;dro (%&nt #s s$((%;#n4 the s;stems %o&d #t m&; 'e th&t the h;dro (%&nt c&n s$((%; the %o&d 3or %#m#ted t#me &s ener4; &&#%&'%e 3rom #t #s not eno$4h to
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s$((%; %o&d re<$#rements &%% the t#me.The (ro'%em :o$%d 'e to $se $( the ener4; 3rom
h;dro (%&nt s$ch th&t cost o3 r$nn#n4 the ste&m (%&nt #s m#n#m$m.The ste&m (%&nt sho$%d
'e r$n &t const&nt #ncrement&% cost 3or the (er#od #t #s r$n I3 & ste&m (%&nt &nd & h;dro (%&nt #s to s$((%; %o&d 3or & 4#en (er#od &nd the
ch&r&cter#st#cs o3 the (%&nts &re 4#en #n terms o3 c$'#c meter=hr 3or h;dro (%&nt &nd he&t
r&te 3or the ste&m (%&nt &nd c&(&c#t; o3 e&ch (%&nt ,the (ro'%em m&; 'e cons#dered #n t:o
:&;s# "#m#t the ener4; s$((%#ed '; h;dro +#n M:h 3#nd ener4; :h#ch sho$%d 'e
s$((%#ed '; ste&m (%&nt.So%e 3or t#me o3 r$nn#n4 ste&m (%&nt.>no:#n4 the
ener4; to 'e s$((%#ed '; the ste&m (%&nt &nd the %o&d :h#ch #t c&n s$((%; &tm&6#m$m e33#c#enc;.*#nd the t#me 3or :h#ch #t sho$%d 'e r$n.Then 3#nd the
%o&d on ?;dro &nd ste&m (%&nt 3or the (er#od 3or :h#ch e&ch sho$%d r$n
## There m&; 'e & %#m#t on the o%$me o3 :&ter to 'e dr&:n 3rom the resero#r3or the h;dro (%&nt.*#nd the ch&r&cter#st#cs o3 h;dro (%&nt .*#nd the t#me 3or
:h#ch ste&m (%&nt sho$%d 'e r$n
T"# )%ll%*i i)%+a!i% i( +#4/i+#' )%+ !"# (!/', %) !"# p+%l## ?;dro &nd therm&% (%&nt c&(&c#t#es the#r ch&r&cter#st#cs
## N$m'er o3 $n#ts### Pen&%t; 3&ctors de(end#n4 on the t;(e o3 3$e% $sed
# Tr&nsm#ss#on %oss &t e&ch st&t#on
Tot&% %osses #n the s;stem# Increment&% %osses
## ?e&t &t h;dro (%&nts
UNIT-II
3. Explai !"# $%$#p! %) 5 $%!+%l a+#a 5 *i!" +#(p#$! !% p%*#+ (,(!# a' '##l%p!"# app+%p+ia!# l%$6 'ia+a +#p+#(#!a!i% %) !*% a+#a LFC a' #xplai
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7 .a. ##l%p# a a!"#a!i$al %'#l )%+ a !,pi$al AC #x$i!a!i% (,(!# a' #xplai
OUT OF SYLLA8US
. +a* !"# l%$6 +#p+#(#!a!i% %) a $%pl#!# AC #x$i!a!i% (,(!# a' #xplai
i!( )#a!/+#(
OUT OF SYLLA8US
UNIT-III
).a. i($/(( !"# 5(#$/+i!, aal,(i( 5 i p%*#+ (,(!# )+% )/'a#!al(
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9 . Explai !"# #!"%'( %) ip+%i %l!a# (!aili!, i p%*#+ (,(!#
:.a i($/(( !"# $%!i#$, aal,(i( )%+ !"# p/+p%(# %) SSS
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:.. Explai !"# 'i))#+#! 5E#+, C%!+%l C#!#+(; i a((%$ia!i%
*"i$" SCAA
UNIT-IV
<.a Explai !"# 'i))#+#! #!"%'( %) (!a!# #(!ia!i% /(#' i p%*#+ (,(!#(
i W#i"!#' l#a(! (4/a+#( (!a!# #(!ia!i%
iiL#a(! (4/a+#( #(!ia!i%
# W#i"!#' l#a(! (4/a+#( (!a!# #(!ia!i%=
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<. i($/(( !"# $%$#p! %) l#a(! (4/a+#( #!"%'; %) (!a!# #(!ia!i% )+%
)/'a#!al(
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> .a W"a! a+# !"# a(i( )#a!/+#( %) (!a!# #(!ia!i% i p%*#+ (,(!#( a' #xplai
!"#?
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> Explai *"a! i( #!*%+6 %(#+aili!, a' a' 'a!a i p%*#+ (,(!# (!a!#
E(!ia!i%
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