What are the two main categories of capacitor banks used in electrical systems?

Capacitor banks are essential components in electrical systems, primarily used for power factor correction and voltage stability. The two main categories of capacitor banks are fixed and switched.

Fixed capacitor banks have a predetermined capacitance value that remains constant regardless of changes in load conditions. These banks are permanently connected to the system and provide continuous reactive power support. This constant connection helps to improve the overall power factor and supply necessary reactive power during steady-state operations.

Switched capacitor banks, on the other hand, can be connected or disconnected from the electrical system as needed. This flexibility allows for dynamic adjustment to varying load conditions, optimizing the power factor and providing reactive power support only when required. The ability to switch these banks in and out of service helps maintain system stability and efficiency, especially during peak demand periods or transient conditions.

Understanding these two categories is crucial for properly managing power quality and ensuring efficient operation in electrical systems. Fixed and switched capacitor banks both play vital roles but serve different purposes based on the operational requirements of the electrical network.