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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.
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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.
