high_voltage_dc_transmission.pdf

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Anna ni!ersit" # C$ennai

%lectrical %ngineering Department

Hig$ &oltage Direct Current 'ransmission

(I')*

2- MARKS

1. List out the applications o !"DC#2. What a$e the t%pes o t$ans&ission s%ste

'. State the co&pa$ison o AC ( DC t$ans&ission s%ste

). State the ad*anta+es in DC t$ans&ission#

,. State the disad*anta+e in dc t$ans&ission#

. What a$e the t%pes o DC link#

. What is the need o s&oothin+ $eacto$#

/. What a$e the acto$s to 0e conside$ed o$ plannin+ o !*dc t$ans&ission#

. 3plain in two lines a0out choice o *olta+e le*el in DC t$ans&ission

14. What is DC 0$eake$# !ow it will 0e useul#

11. 5a&e the new &ode$n t$ends in DC t$ans&ission.

12. What a$e the powe$ se&iconducto$ de*ices used in dc t$ans&ission#1'. D$aw the con*e$te$ station unit in h*dc t$ans&ission

1). !ow will o*e$co&e the disad*anta+es in dc t$ans&ission#

1- MARKS

1. 6o$ a i3ed powe$ t$ans&ission e3plain how the econo&ic choice o *olta+e le*el selected in dc

t$ans&ission s%ste&

2. 3plain the technolo+ical de*elop&ent in cont$ol and p$otection 7 o$ 0ette$ pe$o$&ance and

$elia0ilit% o dc t$ans&ission s%ste&

'. What a$e the die$ent applications o dc t$ans&ission s%ste 3plain the& in detail#

). With neat sketches e3plain the die$ent kinds o dc link a*aila0le#

,. 3plain the co&pa$ison o AC and DC t$ans&ission in detail

. 3plain the application o dc t$ans&ission

. 3plain in detail a0out the plannin+ o h*dc t$ans&ission#

/. 3plain the technolo+ical de*elop&ent o &ode$n t$ends in dc t$ans&ission

. 3plain the &a8o$ co&ponents o a h*dc t$ans&ission in con*e$te$ station unit#

14. State the ad*anta+es and disad*anta+es o dc t$ans&ission s%ste& with ollowin+ econo&ics7

$elia0ilit%7 pe$o$&ance..

(I')+

2- MARKS

1. Deine pulse nu&0e$#
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2. D$aw the dia+$a& +$aet9 0$id+e ci$cuit

'. W$ite the e:uation o ac cu$$ent and dc *olta+e ha$&onics

). What is choice o con*e$te$ coni+u$ation#

,. Deine peak in*e$se *olta+e#

. D$aw the sche&atic dia+$a& o th$ee ( two *al*e conduction &ode

. Deine twel*e pulse con*e$te$ with sche&atic dia+$a&

/. What is &eant 0% ne+lectin+ o*e$lap in +$aet9 in 0$id+e ci$cuit

1-MARKS

1. 6o$ a ' phase pulse +$ate9;s ci$cuit d$aw the ti&in+ dia+$a& conside$in+ o*e$lap an+le is less

than 4 de+$ee and without o*e$lap o$ the ollowin+

a< "olta+e ac$oss load

0< "olta+e ac$oss an% two pai$ o conduction *al*es

2. 3plain the indi*idual cha$acte$istics o a $ectiie$ and an in*e$te$ with sketches

'. D$aw the sche&atic ci$cuit dia+$a& o a pulse +$ate9;s ci$cuit and e3plain its p$inciple o

ope$ation

). Discuss in detail the eect o sou$ce inductance on h*dc s%ste&

,. Show the $atin+ o the *al*e used in +$ate9 ci$cuit is 2.4)Pd whe$e Pd is dc powe$ t$ans&itted. 3plain the eect o o*e$lap an+le on the pe$o$&ance o con*e$te$ ci$cuit

. 3plain the choice o con*e$te$ coni+u$ation o$ an% pulse nu&0e$

/. 3plain the anal%sis o 12 pulse con*e$te$ with 0$id+e $ectiie$

. 3plain the techni:ue in*ol*ed in ha$&onic eli&ination o 0$id+e $ectiie$

14. 3plain the anal%sis o two and th$ee *al*e conduction &ode

11. With detailed anal%sis o con*e$te$ with stead% state anal%sis

=5>T- '

2- MARKS

1. Deine S%nch$onous Condense$

2. What will 0e the cu$$ent $e+ulation in in*e$te$ side#

'. Deine t$anso$&e$ tap chan+in+

). State the t$ans&ission cha$acte$istics with $ectiie$ and in*e$te$

,. Deine i$in+ an+le cont$ol

. What is unco&pounded in*e$te$#

. What is e:uidistant pulse cont$ol#

/. !ow will %ou p$otect a+ainst dc line aults#

. D$aw the cha$acte$istics cu$*e o$ in*e$te$ co&poundin+#

14. What a$e the t%pes o t$anso$&e$ tap chan+e$#11. State the eatu$es o on load tap chan+e$#

12. D$aw the cha$acte$istics cu$*e o$ in*e$te$ co&poundin+#

1'. 6o$ the ope$atin+ point o two cha$acte$istics. state the constant cu$$ent co&poundin+#

1). D$aw the *olta+e cu$$ent cha$acte$istics o con*e$te$s with co&poundin+#

1-MARKS

1. 3plain the indi*idual cha$acte$istics o a $ectiie$ and an in*e$te$ with sketches

2. 3plain in detail a0out the t$anso$&e$ tap chan+e$ with its t%pes

'. 3plain in detail a0out the con*e$te$ cont$ol cha$acte$istics o h*dc s%ste&

). D$aw and e3plain the in*e$te$ and $ectiie$ co&poundin+ cha$acte$istics with constant *olta+eand cu$$ent cu$*e.

,. 3plain the unco&pounded in*e$te$ with neat sketches


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. 3plain in detail the concept o $eacti*e powe$ $e:ui$e&ent in h*dc con*e$te$s

. 3plain in detail a0out cu$$ent $e+ulation $o& the in*e$te$ side

/. With the 0lock dia+$a&7 discuss the p$inciple o ope$ation o a 0asic powe$ cont$olle$

=5>T->"

2- Ma$ks

1. Deine !a$&onic.

2. !ow ha$&onics a$e +ene$ated#

'. W$ite the cha$acte$istics o !a$&onics#

). W$ite the unda&ental co&ponents o ha$&onics with a o$de$ o ;h;#

,. Deine AC ilte$#

. Deine DC 6ilte$#

. What a$e the co&ponents p$esent in AC ( DC ilte$#

/. What a$e the inte$e$ence p$oduced in the co&&unication lines.

. Deine total ha$&onics disto$tion#14. !ow can we a*oid the inte$e$ence occu$ in co&&unication line#

11. Deine Telephone inluence acto$.

12. What a$e the t%pes o AC ilte$s ( Dc#

1'. Deine sin+le tuned ilte$#

1). !ow will p$otect the ilte$#

1-Ma$ks

1. W$ite sho$t notes on the ollowin+?

@a< Telephone inluence acto$

@0< !a$&onic disto$tion

2. What a$e the ilte$ coni+u$ation that a$e e&plo%ed o$ !"DC Con*e$te$ station # i*e desi+n

aspect o one such ilte$.

'. De$i*e an e:uation o$ ha$&onic *olta+e and cu$$ent o$ sin+le tuned ilte$ and discuss the

inluence o netwo$k ad&ittance.

). i*e a detailed account o desi+n aspects o ollowin+ ilte$s

@a< Sin+le tuned ilte$

@0t is $e:ui$ed to eli&inate ha$&onics o o$de$ 14 and 0elow 14 othe$ than unda&ental in a 12

pulse con*e$te$ su++est and de$i*e an e:uation#

. 3plain in detail a0out die$ent t%pes o t$anso$&e$ tap chan+in+.

=5>T-"

2-Ma$ks

1. Deine Dc Ca0les#

2. State the 0asic ph%sical pheno&enon a$isin+ in DC insulation#

'. What is &eant 0% dielect$ic constant in DC ca0le#

). Deine dielect$ic st$ess#

,. Co&pa$e the econo&ics o Dc ca0les with AC ca0les.

. Deine s%ste& si&ulation.. What is &eant 0% !"DC s%ste& si&ulation#

/. D$aw the 0lock dia+$a& o s%ste& si&ulation.


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. Distin+uish AC ca0le *s DC ca0le t$ans&ission#

14. State the nu&0e$ o tools used o$ si&ulation o d%na&ic s%ste&.

11. What a$e the $e:ui$e&ents o$ +ood si&ulation tool#

12. What a$e the two app$oaches a$e a*aila0le in t$ansient anal%sis o si&ulation#

1-Ma$ks

1. Desc$i0e the co&pa$ison o econo&ics o AC and DC.

2. 3plain in detail a0out the &odelin+ o !"DC s%ste& o$ di+ital d%na&ic si&ulation.

'. 3plain in detail a0out !"DC s%ste& si&ulation

). Desc$i0e the philosoph% and tools used in !"DC si&ulation.

,. 3plain the Dielect$ic st$ess in ca0les.

. Desc$i0e the Ph%sical pheno&enon a$isin+ in DC insulation.

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high_voltage_dc_transmission.pdf

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