Power factor improvement

Figure 26.8 Typical layout of 33 kV power factor improvement system with switching and protective equipment...

Part IV Power capacitors power factor improvement and system voltage regulation application of shunt and series capacitors... 

It should be noted that this is not necessarily the actual instantaneous maximum demand. The quantity measured on this meter is, of course, the maximum kW demand, but some forms of tariff are based on the maximum kVA demand in order to encourage power factor improvement (see below). 

Where a plant load is predominantly induction motors it is reasonable to assume the overall power factor of a switchboard to be 0.87 lagging for low voltage and 0.89 lagging for high voltage situations. If the overall power factor is important with regard to payment for imported power, and where a penalty may be imposed on a low power factor, then a detailed calculation of active and reactive powers should be made separately, and the total kVA determined from these two totals. Any necessary power factor improvement can then be calculated from this information. 

Table 6.4 Power factor improvement with different type of hybrid nanowires [18].

Capacitors may be connected across the main busbars of industrial loads in order to provide power factor improvement, but smaller capacitors may also be connected across an individual piece of equipment, as is the case for fluorescent light fittings. 

Figure 2.41 Power factor improvement using capacitors...

Power factor improvement of most industrial loads is achieved by connecting capacitors to either ... 

If power factor improvement is desired, individual load correction procedmes include ... 

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