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Introducing a Novel Method for Real Time Estimation of Power

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Introducing a Novel Method for Real Time Estimation of Power Archive of SID ! "#$ %&' ()*+ #! , - "#$ 1- 2+, -! / *+, 0 --. () ! *+, - !"# $%& 1 -1- "#$ "! /& ! 0 ,$12 , - 3&4 "! 4 5 6! :% ". 2 "#$ % $ ; 0"! < 9 % = <! 0' 0AVR 07 /& ! 8!$ 94 : ( 5 VCI DE4 .' ! 4 0B7 , ! ? @A 12 .' ! /4 #$ 94 : "#$ % $ ; , - "#$ 0, ! ? $ 0 G' $ 0 "! H ! 0P.M.U. 0"! /& ! : ?= % Journal of Iranian Association of Electrical and Electronics Engineers – Vo1.4- No.2- Fall and Winter 2007 Introducing a Novel Method for Real Time Estimation of Power System Voltage Instability Based on Wide Area Protection Hamed Asadi, Majid Sanaye-Pasand, Mahdi Davarpanah School of Electrical & Computer Engineering, College of Engineering University of Tehran, Tehran, Iran Abstract : In this paper, the behavior of dynamic loads of a power system against voltage disturbances is investigated. Then a real electric grid, Khorasan electric grid in North-East of Iran, is modeled by dynamic model of generators, AVRs, governors, field current limiting systems and electric loads. The paper is continued by introducing a novel method, called VCI, for real time voltage instability detection. Mentioned method is simulated on Khorasan electric grid and results are analyzed. Keywords: Dynamic modeling, P.M.U., Dynamic load modeling, Transient voltage collapse, Longer term voltage collapse, Real time voltage instability estimation 1386%& "#$ - ! - - www.SID.ir Archive of SID @U- i4 A < !-#a4 C < K A A) O <* <) <J- ) K A ) ? ! I8 !-)_ ! 6! 1- <) , D , U/ , !-)_ %N ;) < : 34 5 () 36 78- 9 9) 9:/ AW- ) ,E 1: ) , FUN C D A B 8, @%> ?, = F& C <*U KGD OH , <) 5:, !, 1E ) F& C 1) ) </+ !GD !H F ") KH <n X? KH <n OH ! / )) I# <) J @%> 8, K/G D L - K .) ! .,E 5 1> <*U !* H 0 <H8 A !" N !* 1 # <) OH J P !/W OH < ]2 <) A_- ) J !4 <" ! ) < ) ! 36 <) 1- 8, .? ! 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X $E OH cNH <) <*U I ktW) A ]2 <) J ) .)! <*U OH - <bNH h) i4 on-line F <) F#a4 A K ]; OH V"_ W <WH% KJ <*U A 1 .K ? q_, OH ! / ! ) 9 V"_ D ) $6, <*U h) < / ?, & <J- Ir 1> F& <*U !*- H f:) < *U . : <) !-)_ @U- :,</? I/ <) <J- ) on-line FUN ) F#a4 A ]; XH )! , J <*U A !)E ?, <*,E <) <J- ) - .K , X 1* ) >j- ) F#a4 C A .? q_, U h) 1 # <) ? ?, 5 K K <) OH 166_ < , $U XH(/ I; Electrical and Electronics Engineers - Vol.4- No.2- Fall and Winter 2007 q_, U 1 # <) )+, ?, ? ) 1: F <) OH < A_- V"_ W )) KH ) J !?, ?, A .K U ) k-# A .,) 9 F& C )) AD - )E!"# P> 1) %& F 1> <*U !W& ]5[ !"N F <) 1J OH / ?, .)! U ?, A 0- ) ! U ) A FD- A*H ]7.[ ]6[ Journal of Iranian Association of 1386%& "#$ - ! - - www.SID.ir Archive of SID <*U ,? A)- !W& F#a4 A, > <) <J- ) 85 1 )- ) 6/ <*U !W& ) 9_ ) i)% - ? A)- ) GAST , 1> ) KH AD – )E!"# KH" 400 P> :/] , <,_) < _) A)- ) IEEE-G1 F2 60 W ) 85 1 )- 1> 5 ) KH ]8.[ K D )! J Digsilent A A) ) .K ! I8 1> <*U <) 1 <*U )1( I* -,O 5N- N H ) 1> ?, H- X P> 1 & A7 <H8 1J <B, n !WU4 P .K D ]9[ J !W& 8 W P> A !H8, 1- < ? Cb - 4 5N- 1J 105 kaL) Cb - C: 8 5N- .) F2 60 ! W 85 1 )- K <) ?2, 2 1 i4 ) (!, ) P 1> <*U !,, Fba <) <J- ) - <) </7 OH F A . ! ( (-A) 1E A KH" 400 P> 1- 8, C: <*U !W& ) -;) 5N- 1J ? .) > D AVR J A 1 <*U XH .K F2 300 )) AD – )E!"# XH ( KUL 8 5 <) 2H2, 2 ) Cb - F2 -300 C 300 C: 1- ) -,O 5 ) <WH% C AVR J OH KUL OH 2 5 .K ;) w ) K -,O | 5N- OH 1 < AVR !J> <, <%8, 1 ,E w h ) -,O A) ) 9_ - Cb - 8 <) 5N- 1J XH )! 9 KN <) <J- ) .? ! ], -,O ) AW . !,? ) ) AD – )E!"# P> 1) I KH 1 <*U -,O 105 Cb - <) KU , 5N- 1J <" 9:/ 5 ) y <*U Fx- <) 1E ;) w <) <J- ) -,O A :) ) > )) 1J | N I# ) ]; 1 ? > H- !*- <) <*,E 0 A <*U H- g/7 U U -,O 1 # <) )+, ?, t = )1( 32 fd − IIkk fd rated )05.1( . , ! 1UJ D -D ,- 8, @%> H b <) i)% 1 A < , Cb - 4 k3 k2 k1 .K Journal of Iranian Association of Electrical and Electronics Engineers – Vo1.4- No.2- Fall and Winter 2007 <) @) ! N A .) )2( I* 1 z ) </7 ! N 1385 z z- <*U A $6, K/G I K r <) ]; 5N- $-- A) ]2.[ )! ANSI C50.13-1972 , z Az z- 5z z) I 2 1800 F2 2700 < K <U <,? <) !W& -,O <)+ -,O .) ! 2 900 F2 2300 20 !, 8 5N- 1J <8& 2 F <) kaL 1) . 9:/ 94 : "#$ "! /& ! 3- A OH !8H - / !) ) H F& <*U F ") X? FWH% b <) <H8 A W )3( I* .K K :` ) OH FWH% F A-Z{ -,O I H A7 1> U, <) W A <) <J- ). ! 1+, !8H - 5 -,O ,? AVR I 1> <*U X?Zj- . ! K)Z 0,. F <) ) - +u 5 ) <WH% ) !* H -,O 5N- | N 4> <) <Hj A . x- ,-!, !,E 4 <) :xH < n H A !) A <) I6D- <) < .K </? & <) OH < " Fx- <) ! ,. ) A .)! ) - !_H Digsilent Power :/ ], D :/ ], .C ! <) ) - 1- XH ! y K# ]8.[ ) ! Factory 13.1 K# z +? g6_+ <) <J- ) < .! C K# I < D -,O 8 <U- -,O H ) K 1+, <,, - 5 ) < )4( I* i)% X? ,. <" A/? b, ) !**H 6 <U- .?! - :xH 1E U, <) C - K# - C !* .K !*,* 2 <U- X? <) <J- ) .K 1+, I* A A <%8, K !W& 8 < !J <*U !W& 8 1* - - X/R KU , !8H - W .K D !#, 8 , U, > 9:/ <) T - 1- Rr/s 9 IH <) K <) <J- ) 1> g*U -,O AVR H ) K)Z )4( I* i)% ) <6_+ <* <) < ) !/4 . ! D IEEE-DC1A , !W& F#a4 1U, ) K)Z ,-! K# 9 ) !*,* +? ) x .K <) <J- ) !*,* 1- H A ., 9 1386%& "#$ - ! - - www.SID.ir Archive of SID A - <) . ! ! K > g%8, <) <*U 1- 1E U, <) </ 9 m = TP m g%) 9 ) 1E 1- K)Z 0,. I* k KH .) ! 9 !, 8 8 .? J <*U - ], - )! 9 k OH +) C OH 9 )) !8H - 1- 0 9 ) ! 0. C ) ,E 1- ! .? ! C k - g%8, A/ K OH +) 7 < 9 % = <! H ! 1- 8"$ P1! 7 6 77! (B4-1' <! 4- 8"$ ""! <) F& " ) < f:) - u F& <*U <*U <) / g") - +) ,?! I <*U 1+, <*U <) - A 6- )5( I* .,! I6 ) :, A OH / A/? b, .! 30 <) - - / <) / OH < !, k;W . K •- M 2"# <H !, 8 60 - 7 < 9!/ N 5 <! 2- 8"$ I* 10 - I* 5 A) 1 ) 1 .! ) !H 220 €6> $"% A ]2.[ )! & K - () ! |*+, !**H A 2+E KH 00-1 110 OH < + .K/? ., ) 6 77! H ! ! 3- 8"$ z +? <6_+ C: +? 8 OH +) 9 ) > g%8, - XH E ) g6_+ <) C C K# Electrical and Electronics Engineers - Vol.4- No.2- Fall and Winter 2007 <) K# KH A .! K - K & !)Z A ) K# ! - </ D K R S / "#$ 6 77! HP ! 7 5- 8"$ K & A . ! K# z +? <6_+ KUL -$ K & 7== A - +u A*n ) < n .K , - <%8, 70 - 50 A) OH k;W - *"# ! / Journal of Iranian Association of 1386%& "#$ - ! - - www.SID.ir Archive of SID 1.2 2+E . • ,- ! - g6_+ <) < ) !, OH nehbandan 1 tabas V"_ P <) () ! |*+, !**H A istgah azadvar ghaenat-400 < 9 - OH K)Z 1- K)Z +? 0.8 aliabad-400 kohsangi V6, P 60 OH k;W !, ) P 0.6 XH .,)! ! / K <) - 50 OH ) Voltage (p.u.) ,- ! ? J > GD P- - <*,E IU& 0.4 1E H KJ A E A OH <*U 0.2 ) OH 5- FWH% ! 5 FWH% 0 K , 5- FWH% ) <Hj A <n ? K 00.511.522.5 Time (Sec.) .) 1E !?B 4> <) < 1 %$ V+ 94 : W4 / : 7- 8"$ z !*- !# H 1> g*U ) H ) ) # C .K </? <) (- 5-) !* G' /4 #$ 4- - ) <) @) ], ) h ) F& C 94 : "#$ <- :/ B_ !W - < K A C# -+ ]H !+ ) !+? 2 # i4 1> <*U X? OH , 9_) A ) :J ]2.[ , ! <a> ! hUH !+/G A q_, W .? ! ], )1( J i)% +u <) -! ) .,? ! ) ! ,. ) # 4 <) N C E K <) 5- < F+u ! ,. ) # 9_) -K "/ <"_- .; :J ) .) ! +u W) IU& P <*U A P-V 0,. !*- 9_) ) <H8 A ., ! I P- ! N g1 .? <J- )6( I* <) K ]; $"% A 7- .K D K)Z 0 <"/a) .K <Z W) ! N g2 <Z IU& V h) !8D"- !8H - 5 ) 1> ) !* C Journal of Iranian Association of Electrical and Electronics Engineers – Vo1.4- No.2- Fall and Winter 2007 1- !* ) OH <) < ) ) / IH <) <Z A B !8H - !8D"- H |N, .K !)) ) <*U 0. ]11.[ ! C U* <) <*U OH I 4 <) 1> g*U !*- ) !8D"- H . ! 1, - PInitial 1- - <%8, > ) 1- .K 1) ]10[ J 1B -) !/ , g2 ! N 5- < <B, n <%8, <*U F,, A )1(- J 1 <Z !H8, 1- C: <%8, ! W ! N ! ) <) <*U PInitial < 2 <Z .? ! OH ! / n 0, ) 1 <Z +) +u W) ! N !>) OH )8( )7( "* .) ! +) <*U OH .
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