Static synchronous series compensator
A static synchronous series compensator (SSSC) is a type of flexible AC transmission system which consists of a solid-state voltage source inverter coupled with a transformer that is connected in series with a transmission line. This device can inject an almost sinusoidal voltage in series with the line. This injected voltage could be considered as an inductive or capacitive reactance, which is connected in series with the transmission line.<ref name="IEEE Journals & Magazine">"SSSC-static synchronous series compensator: theory, modeling, and application" (PDF). IEEE Journals & Magazine. Retrieved 2017-12-15.</ref> This feature can provide controllable voltage compensation.<ref name="IEEE Journals & Magazine 2017">"Static Synchronous Series Compensator: A Solid-State Approach to the Series Compensation of Transmission Lines" (PDF). IEEE Journals & Magazine. 2017-11-07. Retrieved 2017-12-15.</ref> In addition, SSSC is able to reverse the power flow by injecting a sufficiently large series reactive compensating voltage.<ref name="IEEE Journals & Magazine 2017"/>
See also
- Active power filter
- Static synchronous compensator (STATCOM), a similar shunt-connected device
- Unified power flow controller, a combination of SSSC and STATCOM
- Dynamic voltage restoration
