What is the reason for using reactor in capacitor bank ?

A reactor is used in a capacitor bank to limit the inrush current that occurs when the capacitor bank is switched on. Without the reactor, the inrush current can be very high, leading to potential damage to the capacitor bank and associated equipment. The reactor helps to mitigate this surge, ensuring a smoother and safer operation of the capacitor bank.

The use of a reactor in a capacitor bank serves to prevent harmonic resonance. Capacitor banks can interact with the inductive elements of the power system, potentially causing resonant conditions that amplify harmonic currents. By incorporating a reactor, the harmonic frequencies can be shifted away from resonant points, thereby improving the overall power quality and stability of the electrical system.

The primary purpose of a reactor is to provide inductive reactance in electrical circuits. This inductive reactance helps to control current flow, reduce harmonic distortion, and limit fault currents. Reactors are commonly used in power systems to manage power quality issues, protect equipment, and ensure the efficient operation of the electrical network.

A reactor is used in an Automatic Power Factor Correction (APFC) panel to avoid resonance conditions that can arise when capacitors are used to improve power factor. The reactor helps to filter out harmonics and prevent them from being amplified by the capacitors. This not only enhances the performance of the APFC panel but also extends the lifespan of the capacitors and other components by reducing stress and potential damage from harmonic currents.

The function of a blocking reactor in a capacitor bank connection is to block or attenuate specific harmonic frequencies. This helps to prevent these harmonics from flowing into the capacitor bank, which can cause overheating and degradation of the capacitors. By blocking these harmonics, the blocking reactor ensures the safe and efficient operation of the capacitor bank and improves the overall power quality in the electrical system.

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