Active power losses in a power line with connected FACTS devices

The publication presents models of a power line with connected FACTS devices, for which the dependencies of power losses resulting from the connection of CSC, SSSC, and UPFC systems were determined. The obtained active power loss dependencies were used to determine the differences between power losses resulting from the methods of representing power lines and the connection of FACTS devices. The differences in power losses in a power line are determined between the active power loss of the line denoted as ∆PFACTS with a connected FACTS device and the active power loss for the adopted line representation, i.e., ∆Pline. New devices using high-power thyristors are expensive.
A significant impact on the price is made by costs associated with research, manufacturing, and testing of thyristor control system prototypes. High costs necessitate the performance of accurate technical and economic analyses, which should provide answers to questions about what benefits can be expected from the new devices. For potential applications of FACTS (Flexible Alternating Current Transmission Systems) devices in transmission systems, the values of the full power line model and its operating conditions must be taken into account. (…)

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