Support Vector Machine Approach for the Switching Transient Peak Overvoltages During Line Energization

Sulabh Khandelwal

Abstract:

At the time of restoration transmission line switching is
one of the major causes, which creates transient overvoltages.
Though detailed Electro Magnetic Transient studies are carried
out extensively for the planning and design of transmission
systems, such studies are not common in a day-today operation of
power systems. However it is important for the operator to ensure
during restoration of supply that peak overvoltages resulting from
the switching operations are well within safe limits. This paper
presents a support vector machine approach to classify the various
cases of line energization in the category of safe or unsafe based
upon the peak value of overvoltage at the receiving end of line.
Operator can define the threshold value of voltage to assign the
data pattern in either of the class. For illustration of proposed
approach the power system used for switching transient peak
overvoltages tests is a 400 kV equivalent system of an Indian
southern grid