In an L.V/M.V/H.V electrical installation, capacitor banks (or Static var generator/Active harmonic filter)can be installed at 3 different levels. 1.Global installation Advantages: - No reactive energy bill. - Represents the most economical solution since all the power is concentrated at one point and the expansion coefficient makes it possible to optimize banks - Relieves the transformer. Remark:...

Single busbar compensation Overview An installation with a single LV busbar is that most often encountered. This type of installation requires that the reactive power can change with respect to the methods defined previously. Compensation uses all the receiving devices of the installation and the amperage of the current transformer is determined according to the total current conducted through the...

Centralised compensation Centralised compensation by means of an automatic capacitor bank with automatic regulation offers the most simple and economical solution. The reactive power is subdivided in a number of capacitor steps that can be connected independently. A reactive power controller continuously measures the needs of the installation and connects or disconnects the capacitors until the ta...

Power Factor Correction The active power produced by the active current can alone be turned into an effective use for the consumer; while the reactive power produced by the reactive current does not yield usable power, and consequently, is not registered on the active performance meter. The reactive power has, however, a negative effect on generators, transformers, and conductor lines, while causi...

Global compensation Where a load is continuous and stable, global compensation can be applied Principle The capacitor bank is connected to the busbars of the main LV distribution board for the installation, and remains in service during the period of normal load. Advantages The global type of compensation: Reactive current still flows in all conductors of cables leaving (i.e. downstream of) the ma...

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