reactivepowercompensationbyprajnyapriyadarshinimishra-121126042602-phpapp01

7/17/2019 reactivepowercompensationbyprajnyapriyadarshinimishra-121126042602-phpapp01

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A SEMINAR REPORT

ON

REACTIVE POWER COMPENSATION

By PRAJNYA PRIYADARSINI MISHRA

Regd.0901106020



.

REACTIVE POWER COMPENSATION

INTROUDUCTIONMajor industrial loads ,for !a"#l,transfor"rs, furna$s, indu$tion "otors

t$ nd ra$ti% #o&r for sustainin'"a'nti$ (ld)



DE*INATION

Any d%i$ &+i$+ is $onn$td in sris or#aralll &it+ load and &+i$+ is $a#al ofsu##lyin' ra$ti% #o&r d"andd yload is $alld ra$ti% #o&r $o"#nsation

d%i$)



Power factor

Po&r fa$tor is t+ $osin of an'ldtr"ind y t+ in%rs tan'nt ratio ofra$ti% #o&r and ral #o&r)

T+ $losr t+is an'l is -ro ,t+ lssr ist+ r.uir"nt of ra$ti% #o&r)

Po&r fa$tor lo& /)01 is r'ardd as lo&#o&r fa$tor



REA2, REACTIVE, AND APPARENTPOWERS

Ra$ti% #o&r is not dli%rd as 3$ti%"$+ani$al #o&r out#ut unli4 ral #o&r &+i$+ is3$ti%ly $on%rtd as "$+ani$al #o&r out#ut)

T+ #ortion of #o&r a%ra'd o%r a $o"#lt AC

&a%for", is t+ ral #o&r5 t+at is, nr'y t+at$an usd to do &or4 6for !a"#l o%r$o"fri$tion in a "otor, or +at an l"nt7)

On t+ ot+r +and, t+ #ortion of #o&r 8o& t+at ist"#orarily stord in t+ for" of "a'nti$ or

l$tri$ (lds, du to indu$ti% and $a#a$iti%nt&or4 l"nts, and t+n rturnd to sour$, is4no&n as react!e "#$er.



T+ ('ur s+o&s t+ rlations+i# t&n t+ra$ti% #o&r,a$ti% #o&r, and a##arnt #o&ron a #o&r fa$tor an'l )

T+ load is un$o"#nsatd)If t+ $ondu$tor isfully loadd,t+ ar$ of t+ $ir$l r#rsnts t+"a!i"u" #o&r out#ut)

T+ lss t+ #o&r fa$tor an'l of t+ $ir$uit,+i'+r t+ a##arnt #o&r,+i'+r t+ losss,fort+ sa" a"ount of ral #o&r)

Un$o"#nsatd 2oad

S

P

9

9

Cos9:#;

sSin9:9;S



Co"#nsatd load

S

#

9$

9

9$:P 6tan9<tan9=7

S=9



T>ERE ARE TWO MA?OR WA@S O* REACTIVECOMPENSATION

S+unt $o"#nsation S+unt $a#a$itors ar $onn$td in #aralllin t+ syst" and ar usd "ainly for #o&rfa$tor i"#ro%"nt and in +ar"oni$ (ltrs) Italso oosts t+ %olta' of t+ us) T+is also4no&n as load $o"#nsation)



S>UNT COMPENSATION

XV-1

source

V

Load

R

9 9 V2

Vr

R

?

P



S+unt $o"#nsation &it+$urrnt sour$

VSour$ V

9

2o

ad

R

9

V

V ?

9 RFP

P



Sris $o"#nsationSris $a#a$itor ar $onn$td in sris in t+

lins and ar usd "ainly for oostin' t+r$i%in' nd %olta', in$ras intrans"ission $a#a$ity and rdu$tion in losssin t+ lins)

It also i"#ro% #o&r fa$tor at t+ sndin'nd of t+ lin)

Unli4 s+unt $a#a$itor &+os out#ut d#ndson t+ %olta', t+ %olta' i"#ro%"nt ysris $a#a$itors in$ras &it+ in$ras in

load $urrnt)In ot+r &ord t+ sris $a#a$itor is a slf

r'ulatin' ty#) Sris $o"#nsation is also4no&n as li% $o"#nsation)



SERIES COMPENSATION

V=

Sour$

V 2

o

ad

R

VI$

9

%

R

?I#



SERIES COMPENSATION WIT>VO2TAGE SOURCE

R

v1

Vcomp

lo

ad

V2’V2sour$

If

R

?

v2

V2’

v1Vcomp



FIXED COMPENSATION VS

DYNAMIC COMPENSATION

*IED COMPENSATION<>r t+ ra$ti%#o&r fd y t+ $a#a$itors to t+ syst"is (!d) T+s ar asi$ally ra4r$ontrolld $a#a$itors and ar usd insyst" &+i$+ +as $onstant load +a%in' ast #attrn of o#ration)

D@NAMIC COMPENSATION<>r t+ra$ti% #o&r fd y t+ $a#a$itors to t+

syst" is dyna"i$) T+is is don usin't+yristor $ontrolld $a#a$itors) T+s arusd in syst"s &+r t+ loads ar8u$tuatin' in natur li4 ar$ furna$ loads)



BENE*ITS O* REACTIVE POWERCOMPENSATION

Bttr H$in$y of #o&r 'nration,trans"ission and distriution

I"#ro%"nt in %olta'

Rdu$d VA d"and

>i'+r load $a#aility)

Rdu$d syst" losss)



Con$lusion

&+y $a#a$itors ar usd as ra$ti% #o&r$o"#nsation d%i$J

A $a#a$itor is said to 'nrator of ra$ti%

#o&r) W+n a $a#a$itor is $onn$td a$rossa load, it #ro%ids ra$ti% #o&r to t+ load)

Dil$tri$ "atrials "a4 it #ossil toin$ras t+ out#ut #r unit and to rdu$

losss, t+us "a4in' t+ $o"#nsation y"ans of $a#a$itor "or #ro(tal)



T+an4s

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