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Shunt reactors are key components on transmission systems for voltage control. They are switched frequently by system operators depending on the system voltage requirements. Unlike normal loads which have a power factor close to unity, shunt reactors have a phase angle difference of 90° between the voltage and current. Therefore, switching present's difficulties for both system components and the...
With the advent of cloud based communications, end to end testing of power systems has changed. However for short lines, an application oriented testing is preferred with line data. The benefits of this technique are brought out in a study of its application to a 220kV line, 87km in overall length, with both underground XLPE cable and overhead line sections. The line protection scheme was system tested...
Controlled switching is a solution for the reduction and elimination of high frequency transient currents and voltages that occur during the switching of reactive plant (shunt capacitor banks and reactors). This type plant may be frequently switched by system operators in order to maintain acceptable voltage limits and therefore if switching is uncontrolled, this may present significant power quality...
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