Generation of High Voltage Impulse An impulse voltage generator is designed to produce impulse voltages that simulate li

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Generation Of High Voltage Impulse An Impulse Voltage Generator Is Designed To Produce Impulse Voltages That Simulate Li 1 (137.12 KiB) Viewed 45 times

Generation of High Voltage Impulse An impulse voltage generator is designed to produce impulse voltages that simulate lightning strikes and switching surges. The generator system consists of a charging rectifier, impulse stages according to the Marx circuit, an impulse voltage divider, and impulse voltage measurement system. Figure 1 shows an equivalent circuit of the Marx generator. w www W ---- Test RE Load ci G1 C2 G2 C3 G3 C4 High Voltage source Final Spark GAP Zrin ti www Figure 1: Marx Generator Lightning impulse and switching impulse over-voltages are caused by direct or indirect lightning strikes or by switching operations in electric power systems, respectively. These over-voltages cause transient stresses to the insulations, much higher than the stresses due to the operational voltages. Therefore, insulations must be designed to withstand lightning and switching over-voltages. The insulation design must be verified by withstanding testing using lightning and switching tests respectively. Since an impulse voltage can severely damage electrical equipment, it is important to test HV equipment to work against the impulse voltage. Therefore, an Impulse Voltage generator that generates high voltage or current surges in a controlled testing set-up as shown in Figure can be utilized. Vo C R C Vio R. V. C - MI) (b) Therefore, in this assessment is required to solve about impulse test setup as below: 1. Explain the deviations from the standardized impulse shaped according to IEC 60060-1:2010 and IEEE St.4 (Draft 2013).