Auto compensation stepped series reactor

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Auto compensation stepped series reactor



Introduction

The reactive power compensation in electric power system widely adopts switchingon-off shunt capacitor banks as dynamic reactive power compensation device forlimiting flow. Each set of capacitor should be equipped with a set of seriesreactors with 6% reactance rate.

.

The equipment need large occupied area and high cost because each set ofcapacitors needs to be equipped with a set of series reactors. Reactors withtap can replace the original multi-bank series reactor to reduce neededoccupied area and save cost. Taking three sets of “On-off” capacitors as anexample: if one set of series reactors with tap is used to replace the originalthree sets, it has to work with a no-load switch for switching which causeon-line regulating become impossible.

The new type automatic compensation stepped series reactor takes place ofthe original series reactor with taps and can be connected with 2 sets of capacitorbank. This reduces the number and the occupied area of series reactor and alsorealizes automatic grouping “On-off” of capacitor under working condition. Integratedautomation of substation also becomes possible. It is a reactive compensation renewalproduct of substation for grid voltage improving.

Application

The product is mainly used in power system and work together with groupingon-off capacitor banks to form a dynamic reactive compensation device. It has advantagesof small occupied are, low cost, energy saving, and widely use in power system.The product realizes the integrated control of voltage reactive-power ofsubstation. It also ensures power supply voltage quality and power factorrequirement.  All these features achievethe goal of reducing energy loss, decreasing voltage fluctuation and improvingequipment utilization.

Normal Service Condition
 
1. Altitude: ≤1000m
  2
. Ambient temperature-5+40
  3
. Insulationheat resistant grade: Level F
  4
. Insulationlevel: LI75kV/AC35kV
  5
Indoor useand a protective cover is required for outdoor use.

Code explanation


Dimensions


10kV Epoxy cast resin dry type stepped series reactor

Insulation level:LI75 kV/AC 35kV

Insulation endurance class: F

code

Shunt  

capacitor bank

capacity

(kvar)

Capacitor  rated voltage

(kv)

Rated  reactance

ratio

(%)

Rated

reactance

(Ω)

Rated  current

(A)

Rated

terminal voltage

(V)

Rated  

adjustable capacity

(kvar)

Dimensions

L

B

H

CKCST-180(120,60)/10-6

11/√3

3*1000=3000

6

7.2

3.63

2.41

53

105

158

381

60

120

180

1250

1350

1250

CKCST-216 (144,72)/10-6

11/√3

3*1200=3600

6

6.05

3.02

2.02

63

126

189

381

72

144

216

1300

1400

1270

CKCST-240(160,80)/10-6

11/√3

3*1333=4000

6

5.44

2.72

1.81

70

140

210

381

80

160

240

1330

1430

1320

CKCST-270(180,90)/10-6

11/√3

3*1500=4500

6

4.82

2.41

1.61

79

158

237

381

90

180

270

1360

1470

1360

CKCST-360(240,120)/10-6

11/√3

3*2000=6000

6

3.63

1.84

1.21

105

210

315

381

120

240

360

1380

1500

1400

CKCST-480(320,160)/10-6

11/√3

3*2667=8000

6

2.72

1.36

0.91

140

280

420

381

160

320

480

1510

1600

1550

Basic Data for Order
  1
. RatedCapacity
  2
. RatedVoltage
  3
. RatedCurrent
  4
. RatedReactance
  5
. AssortedCapacitor Parameter
  6. Use Condition
  7. Other performance data should be indicated in contract.


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