What is wrong in keeping power factor improving capacitors online, while the power source is a generator and not the grid?
Generators are inherently capacitive. Let the generator starts, ofcourse at no load. At this stage, if some additional leading current is injected (by the provision of an external capacitor), it will add voltage and hence the voltage control of the generator may get damaged. Normally as per generator capability curve, the margin for leading PF will be much less, when compared to lagging PF. So, we need to ascertain that at the start or running stages of the generator, causes for a leading PF should not be encouraged. Generally speaking, if you introduce a capacitance manually without considering the actual requirement, it may cause over compensation, and lead to an arcing between the terminals of the equipment, control device, or the source of power. This is a dangerous situation. Even shunt capacitor across motors should be avoided if there are more number of motors, and the system is on captive generation. In such cases APFC (Automatic Power Factor Control) relay is more reliable. Ev
Related Questions
- What is wrong in keeping power factor improving capacitors online, while the power source is a generator and not the grid?
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