Why install capacitor cabinets?QPC
Why are factories and factories fined for useless capacity by electricity???
Ineffective power also known as reactive power. This is capacity that factories and enterprises have to pay if they use electricity with Cos Phi coefficient < 0.9. Up to now, many businesses have had to pay a lot of money because was penalized unfairly.
This fine is specified in Circular 15/2014/TT-BCN dated May 28, 2014 of the Ministry of Industry and Trade. Content of regulations on buying and selling reactive capacity is summarized as follows: The power purchaser has the maximum using capacity registered in the power purchase agreement from 40kW or more and has a power factor of Cos phi < 0.9 must buy reactive power.
How to improve power factor?
To improve the power factor (cos phi) of the power network, a set of capacitors is needed as a source of reactive power. This solution is called reactive power compensation.
Inductive load with low power factor will receive the reactive current component from the generator to the distribution transmission system, thus leading to power loss and current drop. pressure.
When the capacitors are connected in parallel with the load, the capacitive current of the capacitor will have the same path as the inductive component of the load current, so these two currents will cancel each other Ic = IL . So there is no more reactive current through the grid in front of the capacitor location.
In particular, we should avoid the motor rating being too large as well as the idling mode of the engine because at this time the power factor of the motor is very small (0.17) due to the amount of active power consumed in idling mode. small.
So how do we know how much the factory lacks and how much reactive power must be compensated to reduce the fine to the lowest level ???
How to calculate compensating capacitor capacity
Advice on installation of capacitor banks