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8/9/2019 EEE Project Powepoint Template

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THE IMPACT OF BoBC IN OFF-SHORE WIND ENERGYCONVERSION SYSTEM


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AbstractAbstractOffshore windfarms is an emerging technology in the wind energy conversion

system. For onshore wind farms high voltage overhead lines are used for

transmitting power from the wind farm to the grid. However this option is not

possible in the case of an offshore windfarm as large part of the distance to

connection point must be covered by submarine cables. The application of

high voltage dc (HVDC transmission for integrating large scale and!or off"

shore wind generation systems with the electric grid is attractive in comparison

to e#tra high voltage ($HV ac transmission due to a variety of reasons li%e

efficiency& economics etc. 'n the case of HVDC transmission a converter is

connected between the wind farm and the utility grid. $ven though CC)s and

VC)s are widely used for the reali*ation of large HVDC systems& as an

alternative approach +ridge of +ridge converter (+o+C is introduced recently.

'n this wor% the performance of the VC and +o+C are compared andanaly*ed. The simulation is done using ,C-D!$TDC software. Compared

with the onshore wind farms& the offshore wind farms have access to

significantly better wind energy resources and hence offer larger energy

generating capability. Therefore offshore wind farms are gaining importance

and the +o+C proves to be better than the VC for similar applications.


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Paper PublicationPaper Publication1.1. Sheeba Percis, L. Ramesh, Dr. S. P. Chowdhury, Dr. S. P.Sheeba Percis, L. Ramesh, Dr. S. P. Chowdhury, Dr. S. P.

Chowdhury. “The Technical mpacts prediction o! SmallChowdhury. “The Technical mpacts prediction o! Small

Scale D" in Low #olta$e Distribution %etwor&s'Scale D" in Low #olta$e Distribution %etwor&s'

nternational Con!erence on Renewable (ner$y , Annanternational Con!erence on Renewable (ner$y , Anna

)ni*ersity Chennai ,ndia ,Au$ust +1 , Pa$e +-+.)ni*ersity Chennai ,ndia ,Au$ust +1 , Pa$e +-+.

+.+. Sheeba Percis, L. Ramesh, “ mpact o! /o/C in 0-shoreSheeba Percis, L. Ramesh, “ mpact o! /o/C in 0-shore2ind (ner$y Con*ersion System' , ((( and (T2ind (ner$y Con*ersion System' , ((( and (T

nternational Con!erence on Computer Communicationnternational Con!erence on Computer Communication

3CCC(T +114 ,%ational Colle$e o! (n$ineerin$ ,3CCC(T +114 ,%ational Colle$e o! (n$ineerin$ ,

Tirunel*eli, ndia ,5arch +11,Pa$e -6. Tirunel*eli, ndia ,5arch +11,Pa$e -6.

7.7. Sheeba Percis,“Detection o! 9aws in rollin$ o! steelSheeba Percis,“Detection o! 9aws in rollin$ o! steel

sheets usin$ ma$e processin$', %ational Con!erence onsheets usin$ ma$e processin$', %ational Con!erence on

:uture challen$es and /uddin$ ntelli$ent Techni;ues in:uture challen$es and /uddin$ ntelli$ent Techni;ues in

(lectrical < (lectronics (n$ineerin$ 3%C((( +14,(lectrical < (lectronics (n$ineerin$ 3%C((( +14,

Sathyabama )ni*ersity,Chennai ,ndia , April +1, Pa$eSathyabama )ni*ersity,Chennai ,ndia , April +1, Pa$e=>->1.=>->1.


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0)TL%( 0: PR(S(%TAT0%0)TL%( 0: PR(S(%TAT0%

•Introduction•Literature review

•Methodology•Results and Discussion

•Conclusion


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%TR0D)CT0%%TR0D)CT0%

• Wind - Promising renewable energy

resource.

• Wind energy conversion systems –

sustainable energy.• !!-shore W"C# are better than on-

shore W"C#.

• Long distance transmission – $%DCstands ahead o! $%&C.


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5(T@0D0L0"5(T@0D0L0"


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#olta$e Source Con*erter#olta$e Source Con*erter

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I

II

I

D D D

D D D

D D D

D D D

Ea

A

B

C

A

B

C.44 [kV]

#2#1

.44 [kV]

100.0 [MVA] A

B

C

0.1 [H]

0.1 [H]

0.1 [H]

1. 0 [ uF ]

1. 0 [ uF ]

1. 0 [ uF ]

R= 01. 0

[ uF ]

Ea

Q


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Features Of VSC

•Consists o! siG arms with seriesconnected sub-modules.

•:ully controlled switches accompanied

with anti-parallel diodes are used.•/i-directional current 9ow is obtained.

•0perated in !our ;uadrants.

•Control o! real and reacti*e power ispossible.

•A dc bus capacitor is used to pro*idesti dc.

•P25 is used.


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Bride Of Bride Co!"erter

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B

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#2#1

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100.0 [MVA]

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H

]

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H

]

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H

]

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H

]

0 . 1 [

H

]

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H

]

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1.0 [uF]

1.0 [uF] 1.0 [uF]

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R

= 0

1.0 [uF] 1.0[uF] 1.0 [uF]

Ea

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Main : Gra!"


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T(ST(D R(S)LTS T(ST(D R(S)LTS

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Out#ut "o$tae of VSC Out#ut "o$taeof BoBC

• :or an input o! .HH, the #SC $i*es anoutput o! .776I. • JK1.=II AR • :or an input o! .HH, the /o/C $i*es anoutput o!.H7+.


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HVDC S(ste& )si! BoBC

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0.2 $ $ [ !; ] V

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E)*1

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ComparisonComparison•n #SC, RC networ&s are needed !or*olta$e sharin$. /o/C does not demandthis.

•n #SC, the number o! series connections

are restricted due to the RC networ&s./o/C is not aected in this manner.

•AC side reacti*e components.

•:ault tolerance.

•Durin$ !ault, ener$y stored in dc buscapacitance o! #SC !eeds the !ault.

•/o/C is comparati*ely less costly and

more eBcient.


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R(:(R(%C(SR(:(R(%C(S'. Daniel Ludois and (iri %en)ataramanan* +&n e,amination o! &C$%DC Power Circuits !or

Interconnecting ul) Wind (eneration with the "lectric grid/*energies 01'1*vol 2*'032-'045*I##6

'553-'172.

0. #heng 8ie #hao and %assilios (. &gelidis* +Review o! DC system 9echnologies !or Large #cale

Integration o! Wind "nergy #ystems with "lectricity (rids/*"nergies 01'1*2*'212-'2'5*I##6 '553-

'172.

2. 8ui:ing :an* Reynaldo 6u;ui* Le 9ang and Per $olmberg* +%#C-$%DC Control and &::lication in

Meshed &C 6etwor)s/

* +Wind ?arm (rid Integration @sing %#C ased

$%DC 9ransmission – &n verview/A. Prasai*&* Bim.8* Divan.D* endre.&* #ul.s +& new architecture !or o!!shore wind !arms/* I"""

9rans. Power "lectr. 0114*02* ''54-'01


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*+ , * Mar%. /0** ICCCET /0** - Natio!a$ Co$$ee ofE!i!eeri!

/*

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