The Design and create of a voltage divider with a vacuum-insulated capacitor type for 200 kilovolts maximum peak measuring.

Abstract

This research presents the design and create of a voltage divider utilizing vacuum-insulated capacitors for measuring peak voltages up to 200 kilovolts. The divider achieves a voltage reduction ratio of 1000:1 by employing polypropylene film sub-capacitors, which are capable of withstanding high voltages and temperatures. In the high-voltage section, sub-capacitors with a nominal value of 47 nanofarads are connected in series to provide a total capacitance of 97.91 picofarads. This assembly is encapsulated in a thick-walled PVC cylindrical housing and insulated using a vacuum. The low-voltage section uses the same type of sub-capacitors connected in parallel, resulting in a total capacitance of 97.92 nanofarads. The design and testing comply with the IEC 60060-2 (2010) standard.

                  Experimental results demonstrated that simulations using Matlab/Simulink software, with an input voltage of 200 kilovolts and an output voltage of 200 volts, were consistent with the designed 1000:1 voltage reduction ratio. This configuration was then used for actual high-voltage AC measurements in a high-voltage electrical laboratory. Comparative measurements at a voltage level of 100 kVrms showed a deviation from the standard of 0.000594, with measured values differing from the reference system by no more than ±1. Consequently, the designed and constructed voltage divider meets the specified standards.