Power factor correction
Power factor correction is the term given to a technology that has been used since the turn of the 20th century to restore the power factor to as close to unity as is economically viable. This is normally achieved by the addition of capacitors to the electrical network which compensate for the reactive power demand of the inductive load and thus reduce the burden on the supply. There should be no effect on the operation of the equipment. To reduce losses in the distribution system, and to reduce the electricity bill, power factor correction, usually in the form of capacitors, is added to neutralize as much of the magnetizing current as possible. Capacitors contained in most power factor correction equipment draw current that leads the voltage, thus producing a leading power factor. If capacitors are connected to a circuit that operates at a nominally lagging power factor, the extent that the circuit lags is reduced proportionately. Typically the corrected power factor will be 0.92 to 0.95. Some power distributors offer incentives for operating with a power factor of better than 0.9, for example, and some penalize consumers with a poor power factor. There are many ways that this is metered but the net result is that in order to reduce wasted energy in the distribution system, the consumer is encouraged to apply power factor correction. Most Network Operating companies now penalize for power factors below 0.95 or 0.9.
Why improve power factor ?
Environmental benefit. Reduction of power consumption due to improved energy efficiency. Reduced power consumption means less greenhouse gas emissions and fossil fuel depletion by power stations.
Extra kVA available from the existing supply
Extended equipment life – Reduced electrical burden on cables and electrical components
Extra kVA available from the existing supply
Why Naac Energy for power factor improvement?
With experience of last more than 20 years and with installation base of more than 20000 systems all over India and abroad offer their expertise in designing, supplying and installation of high quality Intelligent Power Factor Correction and Harmonic Filtration systems. These systems are designed on the basis of Power Quality Studies and analysis using advanced simulation tools. Further information is also collected from customer or project consultant. Some of these are :
- Characteristics and switching time / variation frequency of major loads in the network along with the Rating of Main Transformer and major load feeders where compensation is possible.
- Identifying balanced and unbalanced load condition in network.
- Type and amplitude of harmonic distortion with individual harmonic content.
Based on these inputs we offers Intelligent PFC Systems with appropriate Detuning / Tuning Reactors switched through Contactors or Real Time Thyristor based switching. Possibility of Hybrid System is also worked out which is combination of Contactor based and Real Time TSM based. Balanced or Unbalanced (Phase to Phase) Compensation Systems are offered as per type of loads.
In next blog we discuss about power factor correction systems
Improve power factor save energy and earn profit
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