Minimizing energy costs has become increasingly important in an era when lean manufacturing has become the industry motto. However, it is not only a matter of controlling consumption but also of how the utility bills that consumption. Here’s where the power factor comes into play. In an electrical system, the power factor is the ratio of real power to apparent power. The greater the current draw, the lower the power factor. To minimize power dissipation, a higher current necessitates thicker wires and a more robust infrastructure. Since this raises utility costs, facilities with low power factors are charged a higher rate.
Power factor Correction Services measures the efficiency of an electrical system. Displacement power factor and total harmonic distortion are the two terms used to describe True power factor correction services. It is frequently boiled down to displacement power factor, but this only applies to a subset of linear loads. But since driveshaft and varying frequency drives are nonlinear loads, the rationalization no longer applies.
Energy must be supplied to a machine in order for it to perform work. In the electric motors, further electricity is required to be supplied than does seem as valuable work at the motor shaft. A certain amount of electricity is required just to maintain the necessary magnetic field, but no useful work is produced. This factor is called reactive (or magnetizing) power. Utility companies will provide a limited amount of reactive power free of charge, but customers with high reactive power loads will be charged an additional fee for the reactive component.
Power Factor (PF) is the ratio of active or usable power measured in kilowatts (KW) to total power (active and reactive) measured in kilovolt amperes (KVA).
The value of the power factor can theoretically range between 0/ percent and 100 percent, with a value of 100 percent delivering all of the power as active power. A value of 0% indicates that all power is supplied as reactive power; no motors would turn and no useful work could be done. Electric utility companies are responsible for meeting the entire KVA (total power) demand. A high power factor is important because a customer only gets useful work from the KW (usable) portion.
Electrical equipment such as transformers, electric motors, welding units, server banks, lighting systems, and static converters add to the load on generators, transmission lines, transformers, switchgear, and cables. Reactive power can also result in significant energy loss due to heat dissipation.
Power Factor Correction is done for increasing an electrical system’s efficiency in order to deliver as much power as possible as active power. Power factor correction provides significant cost savings and environmental benefits by improving energy efficiency and lowering electricity consumption throughout your power system.
Benefits Of Employing Power Factor Correction Services:
There are multiple advantages of using going for power factor correction services. including lower demand charges on the power system, elevated load carrying capabilities in the existing circuits, and overall lower power system losses. The benefits of power factor correction services also include significant environmental benefits, which means your company is lowering its carbon footprint and helping the environment.
1. Decreased Demand Charges and Energy Consumption
Several energy providing industries charge for maximum metered demand based on the highest registered demand in kilowatts (KW metre) or a proportion of the highest registered demand in KVA (KVA metre), whichever is greater. If the power factor is low, the percentage of measured KVA will be much higher than the KW demand. Improving the power factor through power factor correction will thus lower the demand charge, assisting in the reduction of your electricity bill.
2. Enhanced Current Load transmitting capacity in the circuits
Loads requiring reactive power necessitate reactive current as well. Implementing power factor correction capacitors near inductive loads at the ends of existing circuits diminishes the current conducted by each circuit. When extra capacity is required for additional machinery or equipment, the reduced current flow caused by improved power factor may allow the circuit to carry new loads, saving your company thousands of dollars in unnecessary upgrade costs. Moreover, the decreased circulating current minimises resistive shortfalls in the circuit.
3. Reduced voltage drop in the systems
For a given load, a higher current flow is caused by a lower power factor. As the line current increases, so does the voltage drop in the conductor, potentially resulting in a lower voltage at the equipment. The voltage drop in the conductor is reduced with an improved power factor, which improves the voltage at the equipment.
4. Reduced losses in the power system
Even though the payoff from reduced conductor loss is rarely sufficient to warrant the insertion of capacitors, it can be an appealing additional benefit in old reactors with lengthy distribution lines or in field pumping processes. System conductor losses are approximately equal to current squared, and because current decreases in direct proportion to power factor improvement, losses are inversely related to power factor squared.
5. Decreased carbon footprint
By lowering the demand charge on your power system through power factor correction, your company puts less strain on the electricity grid, lowering its carbon footprint. Over time, this reduced demand on the electricity grid can account for hundreds of tonnes of reduced carbon production, all thanks to an increase in the electrical efficiency of your power system via power factor correction.
Due to the availability of multiple technologies and every product manufacturer promoting it as the best solution it is difficult as well as tricky to select a single technology or a combination of technologies for reactive power compensation and Power factor Correction Services in a working facility.
Most product manufacturers offer free studies for reactive power and usually recommend solutions that they manufacture or intend to sell rather then what actually is required at times resulting in higher investment/ non achievement of desired results.
It is therefore necessary to conduct a Reactive Power Compensation Study/ Power Factor Correction Study service through an Independent and Expert agency who will suggest the right solution & also take responsibility for delivering on the results.
SASPPL has been conducting Power factor Correction Services impartially for over 2 decades now. In fact it has worked with the Maharashtra State Electricity Distribution Company Limited (MSEDCL) to help them understand the impact of over correction in their system post with kVAh billing was implemented in the state of Maharashtra. Further SASPPL was instrumental in presenting the findings to the Maharashtra Electricity Regulatory Commission (MERC) and the same can be found mentioned in the MREC Tariff petition order of 2018.
If you want to reduce your distribution losses and optimize your Energy bills by maintaining pF please connect with SASPPL.