Variable shunt reactor

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Variable shunt reactors are used in high voltage energy transmission systems to stabilize the voltage during load variations.

Contents

Shunt reactor

A traditional shunt reactor has a fixed rating and is either connected to the power line all the time or switched in and out depending on the load. Recently [1] variable shunt reactors (VSRs) have been developed and introduced on the market. The rating of a VSR can be changed in steps: the maximum regulation range depends on the capability of the on-load tap changer used in combination with the regulation winding used for the shunt reactor. The maximum regulation range has increased over the years, [1] from 50%, up to 80% at some voltage levels. [2] VSRs are considered [1] technically advanced products and are mainly supplied by larger global manufacturers.

Advantages

The variability brings several benefits compared to a traditional fixed shunt reactors. The VSR can continuously compensate reactive power as the load varies and thereby stabilise the voltage. Other important benefits are:

References

  1. 1 2 3 "Technology and utilisation of oil-immersed shunt reactors". 2016.
  2. ↑ "(Variable) Shunt Reactor". www.entsoe.eu. Archived from the original on 2023-10-01. Retrieved 2024-01-13.
  3. ↑ "Hitachi Energy Publisher".
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