Abstract:
Nowadays, FACTS devices are commonly
used for voltage regulation and optimal control of
operating parameters of power systems. Controllable
FACTS devices relying on power electronics can be
used to obtain the required characteristic curve not
only for power transmission lines, but also for a specific
part of the electrical system. This paper reports the
results of a study on operating conditions of a realworld distribution system that has a static thyristorbased VAR compensator (SVC) installed to enhance its
security. The efficiency of distribution systems and
available ranges of their operating conditions largely
depend on the placement of compensation devices and
the rules governing their capacity. We propose a
consistent approach based on graph theory methods to
address this issue. The approach involves examining
the conditions for nodal voltage stabilization to reduce
the total active power loss in the electrical network. The
ranges of variation in SVC capacity are identified and
appropriate SVC control rules required to ensure the
lowest possible total power loss in the network are
established.
