High-voltage (HV) capacitor banks are constructed using combinations of series and parallel capacitor units to meet the required voltage and kilovar requirements. These capacitor banks utilize protective relays, which will trip the bank when problems are detected.
A capacitor bank schematic diagram includes a depiction of the electrical components, as well as how they’re connected to each other. Capacitor banks are used in many different applications. They can help manage the amount of current or voltage in an electrical system, reduce harmonic distortion, and provide power filtering.
To understand how a capacitor bank works, it helps to look at a capacitor bank schematic diagram. A capacitor bank schematic diagram outlines the circuit that makes up the capacitor bank. It reveals how the capacitors, resistors, inductors, and other components interact with each other to help store, regulate, and protect the electrical systems.
When designing a capacitor bank, many factors must be taken into consideration: rated voltage, kvar needs, system protection and communications, footprint and more. These factors govern the selection of the capacitor units to be used, along with proper grouping of these units.
The uniqueness of this scenario lies in the decision to install the capacitor bank at the 11 KV voltage level, even though the factory receives power from the grid at a higher voltage level of 132kV, with an approved connection capacity of 12 megawatts.
Capacitor banks and variable frequency drives (VFDs) are two widespread applications that come into prominence in the transient study in modern factories. Capacitor banks are deployed for reactive power compensation, while VFDs are intrinsically used by induction motors of different ratings.