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FACTS - Part 1

The document discusses Static VAR Compensators (SVC), which are power electronic devices used in high-voltage electricity transmission networks to provide reactive power and stabilize voltage. SVCs utilize thyristor controlled reactors and capacitor banks to manage reactive loads, switching between capacitive and inductive conditions as needed. An overview diagram illustrates the components of an SVC, including shunt capacitors and thyristor controls.

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9 views3 pages

FACTS - Part 1

The document discusses Static VAR Compensators (SVC), which are power electronic devices used in high-voltage electricity transmission networks to provide reactive power and stabilize voltage. SVCs utilize thyristor controlled reactors and capacitor banks to manage reactive loads, switching between capacitive and inductive conditions as needed. An overview diagram illustrates the components of an SVC, including shunt capacitors and thyristor controls.

Uploaded by

sajin.aalo
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
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Download as PDF, TXT or read online on Scribd
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Flexible AC Transmission Systems (FACTS)

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SVC
Static VAR Compensator (SVC) is a power electronic device for providing fast-acting
reactive power on high-voltage electricity transmission networks. SVCs are basically Flexible
AC Transmission System (FACTS) devices that have the capability to regulate voltage and
stabilize the system. If the reactive load is capacitive (leading), the SVC will use thyristor
controlled reactors (TCRs) to consume VAR from the system. Under inductive (lagging)
conditions, the capacitor banks are automatically switched on to supply VAR. This is how
appropriate voltage control can be achieved using a SVC.

Figure 1 shows the overview of a SVC. The static VAR compensator system is basically a
combination of a shunt capacitor bank and a thyristor controlled shunt reactor. The capacitors in
the bank can be switched on and off individually. The capacitors can be switched with thyristors
(TSC) or can be permanently (mechanically) connected (MSC).

Figure 1: Schematic diagram of a SVC

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