Capacitor low voltage centralized compensation circuit

Low-voltage centralized compensation: Centrally installed low-voltage capacitors on the low-voltage bus of the workshop substation
. This compensation method can compensate
the reactive power of the low-voltage bus of the substation, including the high-voltage lines in front of the transformer and the power system. Since this compensation method can
reduce the apparent power of the main transformer of the substation, a main transformer with a smaller capacity can be selected, so it is
more economical. In particular, the power supply department usually implements a two-part electricity fee system for factories
(one part is based on the actual monthly electricity consumption, which is called the electricity fee, and the other
part is based on the installed capacity of the transformer. , called the basic electricity fee), the capacity of the main transformer
decreases. The basic electricity bill is reduced, which can reduce the factory’s electricity expenses, so this
compensation method is very commonly used in factories.
    Low-voltage capacitor cabinets can generally be installed in low-voltage power distribution rooms and installed side by side with low-voltage power distribution panels
; only when there are many capacitor cabinets, a separate room needs to be considered.
    The picture shows a low-voltage centralized compensation capacitor bank connected to a coil. This low-voltage capacitor
bank adopts △ connection, and usually uses the filament
resistor to discharge (a special discharge resistor is also used to discharge). These discharge incandescent lamps
also serve as indicators of normal operation of the capacitor