RC Detector Research Articles

Analisis RC Detector Sebagai Sensor Partial Discharge

Partial Discharge is a localized electric discharge that only partially connects insulation between conductors, and can appear parallel or not to the conductor. Partial discharge (PD) has long been recognized as an important indication of the state of isolation in high voltage equipment. By measuring PD, a diagnosis of the degree of degradation or deterioration in the isolation conditions of a high voltage device can be determined. Partial Discharge that occurs continuously can cause damage (breakdown) on a high voltage equipment. Therefore, before a high voltage device is used, Partial Discharge detection is necessary. Partial Discharge Detection can use the Partial Discharge measurement circuit. In this study, one part of the Partial Discharge measurement series will be discussed, namely the RC detector. Hopefully, RC detector can be further developed and can be used for more accurate partial discharge detection.

Comparative Measurement of Partial Discharge Using Spiral Antenna with RC Detector on High Voltage Equipment

Partial discharge is a partial electrical discharge event in isolation that is not directly connected between the two conductors, which discharges can occur either near or not on the conductor. An Archimedean spiral antenna is created to detect partial discharges in high voltage equipment. Electromagnetic waves produced by partial discharge will be detected by the antenna which has a frequency range of 300 MHz - 3 GHz. The next measurement of partial discharge uses an RC detector. The purpose of this study was to determine the performance of Archimedean spiral antennas which were then compared to RC detectors. Based on the results of tests carried out as many as 50 times, both the spiral arsenic antenna or the RC detector showed good results. Antennas get slightly lower yields, due to the reduction in the flow of electromagnetic waves on the metal walls of high voltage equipment. Whereas RC detector is better by displaying more sensitive results.

Comparison of Partial Discharge Characteristics Detected by RC Detector and Rectangular Antenna

This study discusses the method of measuring and detecting Partial Discharge (PD) in high voltage electrical equipment that has the characteristics of being veiled with metal. This research uses the UHF (Ultra High Frequency) method based on IEC 60270 and RC Detector to detect and measure PD. This method uses electromagnetic wave energy emitted by PD sources from the metal box. Use this method to get detection and measure without having to activate the test object. Then the sensors used in testing in this study are rectangular spiral antennas and RC detectors. In addition, various stresses will be tested. The measurement results then compare when evaluating the PD between the Rectangular Spiral antenna and the RC Detector to determine the sensitivity level of the rectangular spiral antenna. The test results show the measurement of partial release of rectangular spiral antenna is greater than outside the metal box and measurement using RC Detector is more sensitive than using a rectangular spiral antenna sensor.

Analysis of Waveform of Partial Discharge in Air Insulation Measured by RC Detector

Analysis of Waveform of Partial Discharge in Air Insulation Measured by RC Detector

Analysis of Waveform of Partial Discharge in Air Insulation Measured by RC Detector

Analysis of Waveform of Partial Discharge in Air Insulation Measured by RC Detector

Partial Discharge Characteristics of Natural Rubber Blends with Inorganic Nanofiller as Electrical Insulating Material

In electrical engineering, electrical discharge can occur in gaseous, liquid or solid insulating medium. Localized dielectric breakdown that occur at a small portion of a solid or fluid electrical insulation under high voltage stress is called partial discharge (PD). This phenomenon can cause the material to breakdown if there is no proper action taken. Usually it begins within voids, cracks, or inclusions within a solid dielectric, at conductor-dielectric interfaces within solid and in bubbles within liquid dielectrics. In order to modify electrical properties of the original structure then nanocomposite need to be introduced. Nanocomposite is the original structure that has been inserted by nano component (nanofiller) such as silicone dioxide and titanium dioxide. Nanocomposites are also found in nature, for example in the structure of the abalone shell and bone. By adding nano component inside the original component, it can change the mechanical and electric properties. In this study, PD characteristics of polymer-natural rubber blends nanocomposite have been investigated. The samples of nanocomposites were developed by using extrusion method. The high voltage is applied at the electrode arrangement of the test sample. The signals of partial discharges are detected by CIGRE Method II and RC detector and the signals are transferred to the personal computer using LabViewTM software. The result from the software is analyzed to find out the PD characteristics. The results revealed that the highest PD numbers are compositions with no filler while the lowest PD numbers come from sample that use 4% SiO2 as its nanofiller. The physical morphology observation is also conducted to investigate the degradation of the samples.

Partial Discharge Phase Distribution of Palm Oil as Insulating Liquid

Due to the low biodegradability level of mineral oil and its susceptibility to the fire, palm oil was proposed as alternative insulating liquid. This paper discusses partial discharge (PD) in palm oil under sinusoidal voltages and the comparison with mineral oil. PD was generated using a needle-plane electrode configuration which is enable enhancing electric field at the needle tip. PD pulses were detected using RC detector and they were measured using a Computer-based partial discharge measurement system. The results showed that PD activities in both oils are similar. The PD was initiated at the negative polarity of applied voltage . The discharges took place in both polarity’s of applied voltage with PD number was higher at negative one. Several discharges phenomena showed the presence of space charge which changed electric field and governed PD activities besides the main field introduced by voltage application.

Peculiar Features of the Electric Field Distribution in One-Open-Face Coaxial Germanium Detectors of Nuclear Radiation

An analytic expression is derived which determines the electric field strength E(r) in the sensitive region of an one-open-face coaxial detector (spheric coaxial detector - SC detector). The cases of no charge in the sensitive region (Na-Nd = 0) and of uniform charge distribution (Na-Nd = = const. ± 0) are considered. The applicability of the expression obtained is confirmed experi-mentally for a model SC detector. The E(r) dependence in SC detectors is shown to be steeper than in coaxial detectors with two open faces (right coaxial detector - RC detector). This de-pendence is found to steepen when approaching the closed face and near it and to be steepest along the cylinder axis. [Russian Text Ignored.]

Surface Partial Discharges in Moist Dielectric Liquids

The effect of moisture on the inception and development of partial discharges (PD) along a liquid-solid dielectric interface was investigated in an arrangement incorporating a solid dielectric plate between the flat end-faces of two coaxial cylindrical electrodes immersed in transformer oil or hexadecane. PD parameters were evaluated by measurement of light pulses with a sensitive photomultiplier lier as well as by an electrical method using an RC detector. The investigation has shown that moisture facilitates the production of gas bubbles and increases the intensity of PD, but the phenomenon depends on the amount of water dissolved in the liquid and on the solidliquid interface conditions.