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Home / Technical Articles / Single phase and three phase capacitive-load switching in transmission & distribution systems

Interruption of capacitive currents

The interruption of capacitive currents is a usual switching case, unlike the making and breaking of fault currents. The usual cases, in which a capacitive current is switched, are switching of unloaded overhead transmission lines, local substation components, cables, capacitor banks and others.

Single phase and three phase capacitive-load switching in transmission & distribution systems
Single phase and three phase capacitive-load switching in transmission & distribution systems

First, let’s explain the basic nature of these cases in which a capacitive current is switched and then in details 1-phase and 3-phase cases.

Contents:

  1. Capacitive-load switching cases
    1. Switching of unloaded overhead transmission lines
    2. Switching of local substation components
    3. Switching of cables
    4. Switching of capacitor banks
  2. Single-phase capacitive-load switching
  3. Three-phase capacitive-load switching

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Edvard Csanyi

Electrical engineer, programmer and founder of EEP. Highly specialized for design of LV/MV switchgears and LV high power busbar trunking (<6300A) in power substations, commercial buildings and industry facilities. Professional in AutoCAD programming.

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