Reaktory Tlmivky Katalog en 2000001263928

8/13/2019 Reaktory Tlmivky Katalog en 2000001263928

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Shunt Reactors for Medium and

High-Voltage Networks


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Shunt ReactorsShunt reactors are used for various

areas of application:

Compensation of capacitivereactance of transmission cables, in

particular in networks with light or

no load.

R eduction of system-frequency

overvoltages when a sudden load

drop or no load occurs.

Im provement of the stability and

efficiency of energy transmission.

Two type of shunt reactors are

manufactured:

W ith iron core divided by air gaps

Without iron core, with magnetic

return circuit.

The shunt reactors offer individual

problem solutions:

They satisfy all the specified

requirements regarding voltage,

rating, type of operation, low-noise

and low-loss levels, connection

method and type of cooling, as well

as transportation and installation.

Versatile

View into a 60-Mvar three-phaseshunt reactor:

420 kV, O NA N type of cooling(section model)

Components

Five-limb core(The wound limbsconsist of radiallylaminated packageswith ai r gapsinbetween.)

Winding

TankRadiators

Bushings

Conservator

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2

34

5

6

4

5

6


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Precision Manufactured in All Designs

Windings, insulation, tank,monitoring devices and con-nection method are the sameas those found in the con-struction of transformers.However shunt reactors havesome special structural fea-tures and master certain pro-blems due to physical factorsdifferently.

O il-fi lled shunt reactors arenormally made with O N A Ncooling, for high ratings alsowith O N A F cooling.

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Accuracy in production is essential:

M aking low-vibration cores withradially laminated iron packages withparticularly hard air-gap m aterial.

Coil and core assembly:

33.3 M var single-phase shunt reactor500 / 3 kV.

Types of shunt reactors:

a) S ingle-phase type wi th and wi thoutiron core and with magnetic returncircuit..b) T hree-phase type wi th iron core,wit h and without m agnetic returncircuit.

Detail of an iron core divided byair gaps:

Production has to satisfy verystringent standards to meet thespecified tolerances.

Assembly of the iron corecomponents:

Insertion of the radially laminatedlimb column.

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2

3

a

b


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Exemplary in Operation

O ur Com pany can look backon more than a century of experience in the sector of transformers as the construc-tion of shunt reactors has pro-ved. In the course of the yearswe came up with many con-structive solutions. The ex-amples of applications listedbelow give some idea of thevarious technical implementa-

tions.

For the 275 kV network in Kuwait:

250 M var three-phase shunt reactor,50 Hz frequency, O N A F cooling withcable connection box. For testing, theboxes are turned and bushingsinserted.

Designed for very low noiseemissions and compactdimensions:

150 M var shunt reactor, 345 kV.

Figure on the left: w ith sound-damping hood, sound pressurelevel of 59 dB( A ) m easured at adistance of 0.3 m .Figure below: wi thout hood, withseparate radiator bank.


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Unit with reduced overall losses:

110 M var shunt reactor, 400 kV, withattached radiators, O N A N cooling.


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Siemens is one of the worldsleading suppliers of shunt re-actors. This is confirmed bythe great number of units soldwith voltages of up to 735 kVand ratings up to 250 M var.

For the 400 kV cable network in J iddah, Saudi-Arabia:

250 M var three-phase shunt reactors,60 Hz, O N AF cooling.

Close By All Over the World


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In the UHV test bay in Nuremberg(Figure on the left):

135 M var three-phase shunt reactor,525 kV, being successfully tested andsituated in Canada (Figure below).

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Up to the highest voltages:

110 M var single-phase shunt reactors,735/ 3 kV for Canada.

For operation in the Danish high-

voltage network:60 M var shunt reactor, 420 kV, O NA Ncooling.

Two 115-tonne consignments

for overseas:Loading one of the 250 M var three-phase shunt reactors on a ship inRotterdam.


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Reaktory Tlmivky Katalog en 2000001263928