A substation rated 1250 kVA is operating at full-load at 0.8 pf lagging and to carry an additional load of 170 kW at 0.85 pf lagging. With the mentioned power factor, the substation is experiencing inefficient electrical system: high power losses, high voltage drops in the electrical equipment, and high electricity bill. To reduce power losses and to reduce the electricity bill, power factor correction is to be of high importance and consideration. With this condition, the substation is considering of two alternatives namely: Alternative A: To increase the capacity of the substation Alternative B: To add shunt power capacitor In this regard, the owner requested to prepare a summary report consisting of the following details: Which alternative is more economical if cost∕kVA of additional substation capacity is P400.00 and the cost∕kVA of shunt
A substation rated 1250 kVA is operating at full-load at 0.8 pf lagging and to carry an
additional load of 170 kW at 0.85 pf lagging. With the mentioned power factor, the
substation is experiencing inefficient electrical system: high power losses, high voltage
drops in the electrical equipment, and high electricity bill. To reduce power losses and to
reduce the electricity bill, power factor correction is to be of high importance and
consideration.
With this condition, the substation is considering of two alternatives namely:
Alternative A: To increase the capacity of the substation
Alternative B: To add shunt power capacitor
In this regard, the owner requested to prepare a summary report consisting of the
following details:
Which alternative is more economical if cost∕kVA of additional substation capacity is P400.00 and the cost∕kVA of shunt capacitor is P180?
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