About Reactive CompensationReactive compensation improves grid power factor in

power supply system. It also reduces the power loss of

transformer and transmission line. It improves power

efficiency and the environment.So the reactive power

compensation device plays an important role in the power

supply system. Improper selection or use of compensation

device will cause many factors such as harmonic increase

and voltage swell or dip.

Advantages of Reactive Compensation• Stabilize the voltage of power grid and improve power quality

• Improve power factor, reduce capacity and equipment investment

• Reduce line loss, improve the transmission capacity of active

power

• Balance the active power and reactive power of three-phase power

grid

• Reduce the loss of transformer, improve the utilization of

transformer.

Schematic Analysis of Reactive

Compensation• Reactive power Q1↓Apparent S1↓ Total currentI1↓ active

power P not change

• Power factor COSΦ↑=P（not change）/S↓

• Since reactive power Q1↓ with apparent S1Q1↓ total current

I1Q1↓ active power is unchanged

• Power factor COSΦ↑=P( unchanged)/ S↓

Economical Advantage of Reactive

CompensationOne factory transformer is 2000kVA, power factor is 0.85 at present, loading rate is 80%, target

improved power factor is 0.95, how much economic benefits will it take?

Bill calculation

Power factor 0.85=Bill forfeit(2.5%)

Power factor 0.95(or 1)=Bill reward(0.75%)

Average unit price = 1usd/degree

Annual forfeit before compensation=2000×0.85×0.8x24x30x12x1x2.5%=293,000 usd

Annual reward after compensation=2000×0.95×0.8x24x30x12x1x0.75%=99,000 usd

Total billing: 293,000 99,000=392,000usd

Contact USAddress : - Dongding Road 1, Wuxi

Jiangsu, 214437, China

Email - sales@sfere-elec.com

Call - 0510 8619 9063

Visit - https://www.sfere-elec.net/