COMPARISON OF VARIOUS TYPES OF PICO COULOMB CALIBRATORS IN DETERMINING THE ELECTRIC CHARGE GENERATED BY PARTIAL DISCHARGE ON AN AIR-INSULATED NEEDLE-PLATE ELECTRODE.

• Main Author: S S Poekoel, Riecky
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/85223
• Institution: Institut Teknologi Bandung

Partial Discharge (PD) is an important phenomenon that affects the reliability of insulation in high-voltage equipment and often serves as an early indicator of system failure. Therefore, PD testing is crucial, with calibration as a vital initial step. Calibration is performed by generating synthetic PD using a pC calibrator. This study evaluates the performance of three types of PD calibrators under various operational conditions to determine the most effective and accurate calibrator. The tests were conducted in accordance with IEC 60270 standards, using the Benchmark method on a needle-plate configuration with a 2 cm gap. The results of the study show that Calibrator 2 offers the best accuracy and precision, with an average charge difference of 0.2983 nC compared to Calibrators 1 and 3, which had differences of 2.4966 nC and 7.0490 nC, respectively. Additionally, Calibrator 2 demonstrated more consistent performance across various test voltages (7 kV, 8 kV, and 9 kV), closely matching the expected charge calculation values. These findings make a significant contribution to the power industry, particularly in improving PD calibration practices, which can ultimately extend the lifespan of equipment and reduce the risk of system failures caused by undetected insulation issues.