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Shunt reactors are used in power systems to counteract the effect of the line parasitic capacitance, thereby stabilizing the system voltage within acceptable limits. [1] The utility of shunt reactors for voltage control on lightly-loaded transmission lines was examined in a 1926 paper presented at the AIEE by Edith Clarke . [ 2 ]
In particular, shunt capacitors switched by circuit breakers provided an effective means to managing varying reactive power requirements due to changing loads. [3] However, this was not without limitations. Shunt capacitors and reactors are fixed devices, only able to be switched on and off.
Typically, an SVC comprises one or more banks of fixed or switched shunt capacitors or reactors, of which at least one bank is switched by thyristors. Elements which may be used to make an SVC typically include: Thyristor-controlled reactor (TCR), where the reactor may be air- or iron-cored; Thyristor-switched capacitor (TSC) Harmonic filter(s)
A shunt reactor is typically connected to an end of a long transmission line or a weak system to prevent overvoltage under light load (Ferranti effect); [10] passive sources of reactive power (e. g., shunt or series capacitors). shunt capacitors are used in power systems since the 1910s and are popular due to low cost and relative ease of ...
The term shunt is used in filter and similar circuits with a ladder topology to refer to the components connected between the line and common. The term is used in this context to distinguish the shunt components connected between the signal and return lines from the components connected in series along the signal line.
In particular, shunt capacitors switched by circuit breakers provided an effective means to managing varying reactive power requirements due to changing loads. [3] However, this was not without limitations. Shunt capacitors and reactors are fixed devices, only able to be switched on and off.
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 inertial response of the machine and its inductance can help stabilize a power system during rapid fluctuations of loads such as those created by short circuits or electric arc furnaces. For this reason, large installations of synchronous condensers are sometimes used in association with high-voltage direct current converter stations to ...