ESP REDA SLB_VSD

8/18/2019 ESP REDA SLB_VSD

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REDA ProductionSystem Variable SpeedDrive

Introduction


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204/19/1

!pon completion o" t#is section$ you s#ouldbe able to%

E&plain t#e t#ree basic steps o" VSD operation!nderstand #o' drive proves bene(cial to

certain applications)

Variable Speed Drive


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*

State o" t#e Art

+ec#nolo,y$

-i,# Per"ormance$

Reliable$

Variable Speed Drive

SpeedStar 2000 .lu& Vector

VSD


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4

Variable Speed Drive bectives

3#at is t#e "unction o" a VSD

earn #o' t#e system 'or5s

.eatures 6 7ene(ts


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8

3#at does t#e VSD do "or us

Provides constant torue t#rou,# t#eentire speed ran,e)

:an be used manually to set t#e V/-;

ratio "or speci(c applications


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3#y use a VSD in your

application>.le&ibility to t#e system% Provide li,#tnin, protection "or t#e do'n#oleeuipment)

Eliminate t#e need "or c#o5es in t#e system)

Provide in#erent so"t start no inrus# currents)

Protect t#e do'n#ole euipment "rom pumpo?)

Enable remote operation/automation) Enable smoot# response to torue c#an,es)


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@

Slo' acceleration ramp ultimately reducespump 'ear$ prevents sand in(ltration$ andt#us increases run li"e

Reduces do'ntime and maintenance

AND!!!

can catc# a bac5spinnin, motor)

can provide +rac5in, underload)

3#y use a VSD in your

application>


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VSDs add value to t#e

application Every application can bene(t "rom variable

speedB

ESPs are no e&ception

C E&tend your euipment li"e

C mprove your system eciency

C Enable optimi;ation as 'ell conditions c#an,e


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9

VSD

Disconnect

Step-Up

Transformer

J Box

Step-Down

Transformer

Bank

VSD Application


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10

VSD utput to Fotor

controls t#e output VoltageVoltage and FreqencFreqenc to t#e motor by%

:#an,in, t#e input A: si,nal to D: si,nal$

:#oppin, t#e resultin, D: si,nal$ and

(nally$Varyin, t#e output volta,e and "reuency

to t#e motor)

7y varyin, t#e volta,e and "reuency to t#e

motor$ 'e are c#an,in, '#at is called t#eV/-ert; ratio)


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" #$ases A%

Fixe& Voltage' Fixe& FreqencFixe& Voltage' Fixe& Freqenc Varia(le Voltage' Varia(le FreqencVaria(le Voltage' Varia(le Freqenc

)* Dio&es %on+erter

,* D% ink %apacitors"* ./BTs .n+erter

)* Dio&es %on+erter

,* D% ink %apacitors

"* ./BTs .n+erter

12

3

7asic VSD Electrical dia,ram


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1204/19/1

3#y use VSD>

As 'e #ave seen$ a VSD is simply a device"or ta5in, a (&ed "reuency po'er supplyG

and c#an,in, it to a variable "reuency todrive t#e do'n#ole euipment)

+#ere is not#in, Hma,icH about a VSD) As

t#e "reuency increases$ so does t#e motorspeed as 'ell as its #orsepo'er capability)


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Fedium Volta,e vs) o' Volta,eVSDs

Medium Voltage VSD

Motor

Input Transformer -

Internal

Controller 4.16 V ! " 4.16 V

Step-Do#nTransformer

Step-$pTransformer

%o# Voltage VSD

Motor

Controller

&il-filled Transformer

&utdoor $se

&il-filled Transformer

&utdoor $se

4.16 V416! V

3'!(4'! (

6!! V

!-input

V

Sid( )nclosure


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1404/19/1

+#e increased speed causes t#e pump to putout more #ead and Io'G and$ in an e?ort toobey t#e la's o" p#ysics$ t#e bra5e#orsepo'er reuired to do t#is tas5 also

increases)

3e can predict t#e c#an,e in pumpper"ormance 'it# anity la's)

Si;in, a VSD application is t#en a matter o"matc#in, t#e pump and motor at t#e speedo" interest)

3#y use VSD>


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1804/19/1

+#ere is anot#er point "or discussion '#ic#may be re,arded a specialityG but could uite

possible come in #andy on some occasions)

3e s#ould probably call t#is Ht'ea5in,H t#eapplication)

Summary


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104/19/1

+#e 'ell system curve is simply a reIectiono" t#e total ener,y available and lost in t#e

'ell system 'it# t#e e&ception o" t#e pump)

n our application$ 'e try to matc# t#e pumpper"ormance curve to t#e 'ell system curveG

and '#ere t#ey meet is '#ere t#e 'ells#ould produce)

Summary


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1@04/19/1

.or t#e sa5e o" t#is discussion letJs assumeour 'ell system curve is a strai,#t line and'e 5no' t#e end points)

Assume 'e 'ant to use a KL800 andproduce 1*80 "eet o" +D- at 00 bpd and'e 'ant to produce only 200 "eet o" +D- at*400 bpd


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104/19/1

3e could use a 80 sta,e KL800 and ,et t#edesired 1*80 "eet o" +D- at @0 -; but loo5

'#at #appens to t#e *400 7PD point) 3ecould not possibly run t#e unit t#is slo'ly)

Summary


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1904/19/1

0 )000

,000

"000 1000%apacit - Barrels per Da

2000 3000 4000 5000 6000 )0000

7ea&Feet

7#8otoroa&

)0

,0

"0

10

20

30

,900

)900

"900

:e&a Single Stage #mp #erformance %r+e/N2300 210 Series #mp - Varia(le Freqenc

7 e a & % a p a c i t !

#mp ;nl ! -oa&

4 0 7


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2004/19/1

Ac#ievin, t#e lo'er point o" 200 "eet at *400bpd may cause us to drop to a lo'er

"reuency t#an 'e really 'ant to use)

s t#ere anyt#in, 'e could do>

Summary


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2104/19/1

Mes t#ere is)

3e are dividin, t#e 'ell system curve by t#enumber o" sta,es in t#e pump in order to

display it on our sin,le sta,e pumpper"ormance curve)

" 'e divide t#e 'ell system curve by a

lar,er number o" sta,es say 100 "ore&ample$ it tends to become HIatterH)

Summary


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2204/19/1

0 )000

,000


2000 3000 4000 5000 6000 )0000

7ea&Feet

7#8otoroa&

)0

,0

"0

10

20

30

,900

)900

"900

:e&a Single Stage #mp #erformance %r+e/N2300 210 Series #mp - Varia(le Freqenc

7 e a & % a p a c i t !

#mp ;nl ! -oa&

4 0 7


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2*04/19/1

7y usin, more sta,es in t#e pump$ 'e canma5e t#e 'ell system curve Iatter and ,et a

muc# 'ider Io' ran,e covera,e 'it# t#epump) +#e only problem is t#at more sta,esare ,ivin, us too muc# Io' and ta5in, us tot#e ri,#t o" t#e operatin, ran,e)

s t#ere anyt#in, 'e can do to counteractt#is>

Summary


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2404/19/1

+#e +D- reuired is essentially a sum o" t#evertical li"t reuired$ t#e tubin, "riction and

t#e 'ell#ead pressure)

+#e vertical li"t is determined by t#e 'ellproductivity and is beyond our sp#ere o"

inIuence)

3e could possibly increase "riction 'it#smaller tubin,)

Summary


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2804/19/1

+#e easiest t#in, "or us to do is increase t#e'ell#ead pressure)

+#is 'ill #ave t#e e?ect o" raisin, t#e 'ellsystem curve vertically 'it#out c#an,in, t#eslope)

Summary


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204/19/1

0 )000

,000


2000 3000 4000 5000 6000 )0000

7ea&Feet

7#8otoroa&

)0

,0

"0

10

20

30

,900

)900

"900

:e&a Single Stage #mp #erformance %r+e/N2300 2)" Series #mp - Varia(le Freqenc

7 e a & % a p a c i t !

#mp ;nl ! -oa&

4 0 7


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2@04/19/1

7y raisin, t#e 'ell#ead pressure$ 'e canraise t#e 'ell system curve bac5 up to 'it#in

t#e ran,e o" t#e pump)

bviously increasin, t#e 'ell#ead pressurearbitrarily 'ill cause additional po'er loss

but t#ere are occasions '#ere t#e overridin,consideration is strictly a matter o"ma&imi;in, t#e total Io' ran,e)

Summary


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204/19/1

7y increasin, t#e number o" sta,es$ 'e canIatten out t#e 'ell system curve 'it#

respect to t#e pump per"ormance curve andac#ieve a ,reater ran,e)

Summary


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Flow HZ Flow60= ×60

HZ

Head60HeadHZ = ×HZ

60

2

BHP60BHP HZ = ×60

HZ 3

MHP60MHPHZ = ×60

HZ

" 'e 5no' t#e pump per"ormance at 0 -;$ 'e can correct it toanot#er "reuency by t#e anity la's%


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*004/19/1

60MHP ×= 60BHPHZ

60

2

×=HZ 60

60MHP

60BHP

Usefl?qations" 'e 5no' t#e pump 7-P at 0 -; and 'e 5no' '#at is t#e

ma&imum "reuency 'e desire to run at$ 'e can determinet#e minimum permissible 0 -; motor -P ratin, as%

" 'e 5no' t#e pump 7-P at 0 -; and 'e 5no' '#at ourmotor si;e is at 0 -;$ 'e can calculate t#e ma&imumallo'able "reuency be"ore overloadin, t#e motor as%


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*104/19/1

% Load =

BHP60

MHP60 × 60

HZ 2

×= VoltsVoltsHz

60

Usefl?qations" 'e 5no' t#e volta,e at 0 -;$ 'e can calculate it at anot#er

"reuency as%

" 'e 5no' t#e pump 7-P at 0 -; and t#e motor rated -p at0 -;$ 'e can determine t#e motor load at any "reuency as%

60


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*204/19/1

=Volts

x KVA

Amps x

1.32100

0

!"#$e &tp&t KVA = KVA x

'''V

()0V

!se"ul EuationsAt any "reuency$ i" 'e 5no' t#e volts and amps$ 'e cancalculate t#e NVA as%

()0

" 'e 5no' t#e drive NVA ratin, at one input volta,e$ 'e canconvert it to anot#er input volta,e as%


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**04/19/1

×Hp L#m#t =Hz HP L#m#t Hz

6

0

60

×=HZ 6

0

60*HP

60BHP

!se"ul Euations

" 'e 5no' t#e pump s#a"t -P ratin, at 0 -;$ 'e can convert itto anot#er "reuency as%

" 'e 5no' t#e pump s#a"t -P ratin, at 0 -; and t#e pump 7-Preuirement at 0 -;$ 'e can determine t#e ma&imum"reuency allo'able be"ore 'e e&ceed t#e s#a"t capability as%

Documents

ESP REDA SLB_VSD