sachin parmar original ppt

8/2/2019 Sachin Parmar Original Ppt

1/14

INSTITUTE OF ENGINEERING AND

SCIENCE ,IPS ACADEMY INDORE

DEPARTMENT OF ELECTRICAL AND

ELECTRONICS ENGINEERING

Under the guidance of:

Mr.Deepesh Bhati

Miss.Sweety Jain

Miss.Sapna Gulani

Prepared by:

Sachin Parmar

0808EX101046

IIIrd Sem

SEMINAR ON:POWER FACTOR AND ITS

CORRECTION


2/14

What is Power Factor?

Power Factor = cos

is the angle between voltage and current

phasor.

Power Factor is the ratio of resistance to the

impedance.

It is also the ratio of active power to the apparent

power.


3/14

POWER TRIANGLE


4/14


5/14

EXAMPLES OF ELECTRIC EQUIPMENT AND THEIREXAMPLES OF ELECTRIC EQUIPMENT AND THEIR

POWER FACTORPOWER FACTORName of Equipment Power Factor

Percent

Lightly loaded induction motor .20

Loaded induction motor .80

Neon-lighting equipment .30 - .70All types of resistance

heating devices

(e.g. toaster, space heater)

1


6/14

Why Enforce Power Factor?

Places the cost burden more on those customers

causing the problem rather than all rate payers.

Improves system efficiency by reducing losses

Enhances system operation and reliability.

Increases system capacity capabilities.


7/14

i. Equipment Design

ii. Operating Conditions

iii.Line voltage

What causes low power factor?


8/14

DISADVANTAGES OF LOW POWER FACTOR

Greater conductor size

Poor efficiency

Larger voltage drop

Larger kVA rating of equipment


9/14

POWER FACTOR CORRECTION

Power factor correction can be made in two ways:

Reduce the amount of reactive energy

Compensate artificially for the consumption of

reactive energy with power factor capacitor

Two type of equipment are available for powerfactor correction:

Rotary Equipment: Phase advancers,synchronous motors and synchronouscondensers


10/14

Power factor correction is achieved by the

addition of capacitors in parallel with the

connected motor circuits and can be applied at

the starter, or applied at the switchboard ordistribution panel.

Two types of correction using capacitors Static correction

Bulk correction


11/14

BENEFITS OF POWER FACTOR

CORRECTION

Benefit 1 - Reduce Utility Power Bills

Benefit 2 - Increase System Capacity

Benefit 3 - Improve System Operating

Characteristics


12/14

RECOMMENDATIONS

Different strategies of correction, static versus

bulk.

Inverters, variable speed drives, and solid

state soft starters will affect design.

Power factor can be affected by harmonics,which can only be addressed with filters.


13/14

CONCLUSION

Lastly after the completion of my project, I conclude

that improvement of power factor is necessary in both

consumer and supplier point of view. In some

industries penalty is charged due to maintenance oflow power factor. In some industries where power

consumed by the load is low, high ratings of

equipments are required. SVC Technologies and

Synchronous Generator are used for the improvement

of power factor.


14/14

THANK YOU

sachin parmar original ppt

Documents