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All Journal International Journal of Electrical and Computer Engineering TELKOMNIKA (Telecommunication Computing Electronics and Control) Jurnal Informatika dan Teknik Elektro Terapan JURNAL NASIONAL TEKNIK ELEKTRO Proceeding of the Electrical Engineering Computer Science and Informatics Emerging Science Journal TELKA - Telekomunikasi, Elektronika, Komputasi dan Kontrol EPI International Journal of Engineering Journal of Energy and Electrical Engineering (JEEE) International Journal of Science, Engineering and Information Technology Jurnal Teknik Mesin, Industri, Elektro dan Informatika
Khayam, Umar
Institut Teknologi Bandung
Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Environmental Science Industrial & Manufacturing Engineering Mechanical Engineering

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Analysis of Waveform of Partial Discharge in Air Insulation Measured by RC Detector Michael Stevano Sinurat; Umar Khayam
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 5: EECSI 2018
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (772.794 KB) | DOI: 10.11591/eecsi.v5.1686

Abstract

This study discusses the measurement of Partial Discharge (PD) in air insulation. Partial Discharge Measurement is very important to know the condition of electrical equipment. The cause of partial discharge is not only old equipment, but also from set-up errors and insulation problems. In this research partial discharge measurement was performed by using electrical methods. Electrical method use RC Detector. The modeling of partial discharge was done by using needle-plane electrode distant 1 cm in air insulation. Partial discharge measurement parameters include the measurement of Background Noise (BGN), Partial Discharge Inception Voltage (PDIV) and PD Waveform. The Partial Discharge measurement result show that Vpp of BGN ON is higher than Vpp of BGN OFF. The negative PDIV signal first appeared for the RC Detector at a voltage 3.55 KV and Positive PDIV at 4.01 KV. Negative and positive PD waveform for RC Detector at 5 KV, 5.5 KV, 6 KV, 6.5 KV and 7 KV respectively, it has been found that the fall time is greater than the rise time, and peak to peak voltage (Vpp) will be greater when the applied voltage is greater.
Application of Ultra-Wideband Double Layer Printed Antenna for Partial Discharge Detection Yuda Muhammad Hamdani; Umar Khayam
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 5: EECSI 2018
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (784.888 KB) | DOI: 10.11591/eecsi.v5.1690

Abstract

Partial discharge (PD) is a local electrification phenomenon that partially connects insulation between the conductors and occurs either on the surface of the conductor or inside the insulation (void). During the PD there are several phenomena that accompany the occurrence of PD, such as impulse currents, heat radiation, electromagnetic waves, mechanical waves and chemical processes. This phenomenon is detected and measured to know the existence of PD. One of the PD measurements is ultra high frequency (UHF) method, by measuring the waves generated by PD using antenna. One of antenna having good characteristics is UWB double layer printed antenna. In this paper the application of ultra-wideband double layer printed antenna for partial discharge detection is reported. The application of antenna on PD measurement, shows that the antenna is able to detect PD. The characteristics of PD: PDIV, PDEV, PD waveform are measured using this antenna. Ultra-wideband (UWB) double layer printed antenna is an antenna developed from a square microstrip antenna with symmetrical T-shaped tethering. The proposed antenna is implemented on Epoxy FR-4 substrate with permittivity of 4.3, thickness of 1.6mm, and 72.8mm x 60.0mm in size. The VNA testing of the antenna shows that the antenna bandwidth is from 50MHz to 2.30GHz. The measured results of PD wave are PDIV, PD waveform and PDEV.
Determination of Appropriate Overhead Line Insulator in Sumatra due to Contamination Severity Arpan Zaeni; Umar Khayam; Deny Viviantoro
Proceeding of the Electrical Engineering Computer Science and Informatics Vol 6: EECSI 2019
Publisher : IAES Indonesia Section

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/eecsi.v6.2018

Abstract

Insulator is one of the important equipment to support electrical power delivery which flow through the transmission line. Considering its very important role, the selection of insulators must be certainly based on deep analysis so that the insulator we choose works properly. There are several standards that can be used in selecting isolators, but in this paper the standards that will be used for case study analysis are IEC and IEEE standards. Case studies that will be used for the selection of insulators are for Sumatra that located in Indonesia which is a tropical country and certainly has special environmental characteristics that can influence the selection parameters of an insulator. There are several parameters that are commonly used in selecting overhead isolators those are power frequency voltage, environmental condition (contamination), switching over voltage, and lightning over voltage. Using environmental condition, it is found that the pollution category of Sumatra area is heavy, which influence the selection of insulation material.
Partial Discharge Measurement Using Transient Earth Voltage Sensors with Different Dimensions in Metal Shrouded Equipment Dedi Tri Laksono; Deni Tri Laksono; Monika Faswia Fahmi; Umar Umar Khayam
International Journal of Science, Engineering, and Information Technology Vol 7, No 02 (2023): IJSEIT Volume 07 Issue 02 29 July 2023
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/ijseit.v7i02.20537

Abstract

Partial discharge (PD) generally occurs in electrical equipment that is encased in metal. The metal box is a form of high voltage equipment such as Gas Insulated Switchgear (GIS), power switchgear. Indications of high-voltage electrical insulation failure can be detected by the appearance of partial discharge. One of the sensors to detect partial discharge is the Transient Earth Voltage (TEV) sensor. This study is to find the difference in detecting partial discharges in 3x3 cm handmade TEV sensors and 4x4 cm handmade TEV. The TEV sensor is positioned at the midpoint of the bushing area. A bushing is an area on high-voltage equipment where there is a small gap. The TEV sensor was placed at a distance of 15 cm, 30 cm, and 45 cm from the bushing. Some partial discharge measurements are in the form of partial discharge waveforms, partial discharge Inception Voltage, and phase patterns. Then the calculation is carried out on the frequency range of the TEV sensor. The source of partial discharge in the air insulation medium is a needle plate electrode. Based on the measurement results, both handmade TEV sensors can detect partial discharge in the ultrawide band frequency range. The result is that the 4x4 cm TEV sensor is better than the 3x3 cm TEV. This can be seen from the acquisition of PDIV, partial discharge waves, or capacitance values. Although the range of values is not large.
Perbandingan Sensor TEV Dan Detektor RC Untuk Pengukuran Partial Discharge Pada Peralatan Tegangan Tinggi Dedi Tri Laksono; Deni Tri Laksono; Monika Faswia Fahmi; Ummul Khair; Umar Khayam
Jurnal Teknik Mesin, Industri, Elektro dan Informatika Vol. 2 No. 1 (2023): Maret : JURNAL TEKNIK MESIN, INDUSTRI, ELEKTRO DAN INFORMATIKA
Publisher : Pusat Riset dan Inovasi Nasional

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55606/jtmei.v2i1.2432

Abstract

Electrical equipment often faces various issues, with insulation problems being a major cause of failure. This article investigates the comparative effectiveness of two Partial Discharge (PD) detection methods: using Transient Earth Voltage (TEV) sensors and Resistor-Capacitor (RC) detectors. The study was conducted on a metal box with a voltage level of 6 kV. Data collected included Background Noise (BGN) and Partial Discharge Inception Voltage (PDIV), processed using Microsoft Excel and OriginPro 9. Results indicate a correlation between higher BGN values on TEV sensors and earlier PDIV occurrence on those sensors. Background noise significantly impacts the PDIV threshold, influencing sensitivity and insulation risk potential. While PDIV provides a threshold guideline, correlation with BGN helps illustrate the background conditions' influence on PD measurement outcomes. The study offers insights into the importance of considering noise in PD measurements and formulates recommendations for practitioners to choose appropriate detection methods based on specific environmental conditions and electrical equipment.
Karakteristik Peluahan pada Permukaan Akrilik di Sekeliling Elektroda Plat nurdiansyah, rian; ardiansyah, neris peri; khayam, umar
Journal of Energy and Electrical Engineering Vol 5, No 1: Oktober 2023
Publisher : Teknik Elektro Universitas Siliwangi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37058/jeee.v4i1.5628

Abstract

Lebih dari 50% kerusakan pada instrumen sistem daya disebabkan oleh cacat isolator. Cacat isolator ini terkait erat dengan peluahan sebagian karena selain memicu terjadinya kerusakan pada isolator juga bisa menjadi pertanda awal kerusakan isolator. Oleh karena itu, deteksi dan pengukuran peluahan sebagian sangat penting untuk mengetahui keberadaan dan sifat kerusakan pada isolator yang diuji, sehingga tindakan pencegahan dapat diambil sesegera mungkin ketika kerusakan terjadi dan mencegah peningkatan kerusakan dan menyebar ke peralatan lain dengan fungsi vital ke sistem daya. Dalam percobaan ini, pengujian dan pengukuran peluahan sebagian pada bahan isolator padat akrilik dengan mengacu pada standar IEC 60270. Hasil pengukuran Partial Discharge Inception Voltage (PDIV) pada isolator menghasilkan kesimpulan bahwa peluahan sebagian yang terjadi adalah peluahan sebagian permukaan, karena nilai PDIV jauh lebih kecil dari nilai tegangan breakdown akrilik dan lebih mendekati tegangan breakdown udara.
Effect of silica nanofiller in cross-linked polyethylene as electrical tree growth inhibitor Moh Nazar, Nazatul Shiema; Syazwani Mansor, Noor; Khayam, Umar; Asiah Muhamad, Nor; Jaafar Mustapha, Mariatti; Izzani Mohamed, Amir; Mohd Jamil, Mohamad Kamarol
International Journal of Electrical and Computer Engineering (IJECE) Vol 12, No 3: June 2022
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijece.v12i3.pp2256-2263

Abstract

One of the main phenomena that contributes to the non-success of cable insulation made of cross-linked polyethylene (XLPE) is electrical treeing. To improve the XPLE cable insulation, the use of nanofiller has been introduced. Adding the nanofiller in the based composite offers better cable lifetime and resistance to deal with the cable failure. One of the potential nanofillers that can increase the insulation performance of XLPE cable is silica nanofiller. To this extent, the studies on silica nanofiller in XLPE are focusing on the impulse breakdown strength, dielectric loss, permittivity, space charge, alternating current (AC), and partial discharge. The studies reveal that the dielectric properties of the XLPE nanocomposite have significant improvement. Therefore, this work investigates the effect of various concentrations of silica nanofiller in XLPE composite as electrical tree inhibitor. The concentrations of silica nanofiller in XLPE were 0.25 wt%, 0.5 wt%, 0.75 wt%, 1.0 wt%, 1.25 wt%, 1.5 wt%, and 1.75 wt%. The silica nanofillers have 96%-99% purity, 20-30 nm sizes and the shapes are spherical. As a result, the XLPE composite containing 1.5 wt% silica nanofiller demonstrate higher tree inception voltage and detaining the tree propagation speed, which could be considered as an inhibitor medium of electrical tree growth.
Design of Modified UWB Microstrip Antenna for UHF Partial Discharge Sensor Khayam, Umar; Hamdani, Yuda M.; Rachmawati, .
Emerging Science Journal Vol 8, No 5 (2024): October
Publisher : Ital Publication

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.28991/ESJ-2024-08-05-03

Abstract

The development of printable ultrahigh-frequency (UHF) antennas as partial discharge (PD) sensors for high-voltage equipment has been extensively studied. However, achieving ultrawideband (UWB) UHF PD sensors frequently requires larger sizes, unsuitable for certain applications requiring compact sensors for dielectric windows in HV equipment. This research objective is to obtain PD sensors with a wider bandwidth (0.3–3 GHz) and a compact size fitting a less-than-100mm-length gas-insulated switchgear (GIS) dielectric window. A circular patch microstrip antenna (CPMA) was chosen for its small size and potential for UWB performance. This paper discusses the design modification of the CPMA to obtain a wider bandwidth for PD detection in GIS. Simulations and lab-scale experimental verifications were conducted to evaluate the optimized sensor. The modified sensor, with a size of 60 × 73 mm², achieved a bandwidth of 3.08–3.14 GHz, a reflection coefficient of -44 dB, and several resonant frequencies of 0.3–2.3 GHz. This is a seven-time wider bandwidth compared to earlier bowtie antennas while keeping a dimension of less than 100 mm². These properties allow for efficient PD detection in GIS and other insulating media. Experimental results indicate the sensor's capacity to reliably detect and analyze PD signals while responding appropriately to variations in voltage. Doi: 10.28991/ESJ-2024-08-05-03 Full Text: PDF
OPTIMASI PARAMETER ANTENA DIPOLE SEBAGAI SENSOR DALAM MENDETEKSI PARTIAL DISCHARGE PADA ISOLASI GIS Nugraha, Farradita; Khayam, Umar; Rhamdhani, Taufik
Jurnal Informatika dan Teknik Elektro Terapan Vol. 13 No. 2 (2025)
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jitet.v13i2.6511

Abstract

Antena merupakan suatu sensor yang dapat digunakan sebagai alat mendeteksi adanya partial discharge pada GIS (Gas Insulated Switchgear. Deteksi partial discharge pada GIS dilakukan untuk mengetahui kondisi dari isolasi pada peralatan tegangan tinggi tersebut. Sensor antenna diatur pada range 300 MHz-3 GHz atau pada Ultra High Frekuensi (UHF), agar sesuai dengan sinyal gelombang elektromagnetik pada GIS. Dalam pembuatan antenna sebagai sensor, hal pertama yang perlu dilakukan adalah melakukan simulasi pada antenna menggunakan aplikasi gambar 3 dimensi, sehingga didapatkan ukuran antenna terbaik dengan bandwidth yang lebar serta nilai return loss yang kecil. Setelah dilakukan perubahan pada parameter panjang maupun lebar antenna dipole, maka didapatkan hasil simulasi terbaik pada bandwidth dan return loss, yaitu ketika dilakukan pengaturan pada perubahan panjang antenna tersebut dengan ukuran  35 x 40 mm dengan bandwidth sebesar 956 MHz dan return loss sebesar -22,41 dB. 
Karakteristik Peluahan Sebagian Permukaan Material PCB di Isolasi Udara dengan Elektroda Pelat-Pelat Ardiansyah, Neris Peri; Khayam, Umar
TELKA - Telekomunikasi Elektronika Komputasi dan Kontrol Vol 9, No 2 (2023): TELKA
Publisher : Jurusan Teknik Elektro UIN Sunan Gunung Djati Bandung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15575/telka.v9n2.145-155

Abstract

Kualitas sistem tenaga listrik dipengaruhi salah satunya oleh kualitas isolasi yang digunakan terhadap peralatan yang digunakan. Permasalahan yang terjadi pada peraltan tegangan tinggi adalah kualitas isolasi yang tidak sesuai dengan peralatan yang digunakan. Salah satu tanda terjadinya kerusakan pada isolasi adalah dengan timbulnya Partial Discharge (PD) yang merupakan gejala awal terjadinya kerusakan pada isolasi peralatan tegangan tinggi. Pendeteksian PD dapat dilakukan dengan mendeteksi radiasi yang dihasilkan oleh peralatan, diantaranya dengan deteksi Transient Earth Voltage (TEV), atau yang lebih konvensional yaitu deteksi gelombang elektromagnetik, akustik dan mekanik. Pada penelitian ini dilakukan percobaan pengukuran Surface Discharge yang terjadi pada permukaan isolator yang yang terbuat dari PCB. Pengukuran dilakukan menggunakan Standar IEC 60270 dengan deteksi non-elektrik menggunakan sensor Loop Antenna. Pengukuran dilakukan pada media isolasi gas (udara) menggunakan elektroda pelat-pelat berbentuk lingkaran sebagai pembangkit medan listrik yang homogen dan simetris. Hasil dari penelitian karakteristik surface discharge yang terjadi pada permukaan PCB dengan medan homogen yang terjadi pada isolator udara diperoleh data berupa PDIV negatif dan positif pada nilai tegangan 3,35 kV dan 3,37 kV, bentuk Gelombang PD pada tegangan uji 4,5-7 kV dengan waktu kenaikan 144-301 ns, dan waktu penurunan 4966-3094 ns, Sudut Pola Phasa PD pada tengangan 4,5-7 kV di polaritas negative dan positif berada pada 198-253 derajat dan 22-69 derajat, besar muatan PD negatif dan positif (-58)-(-8893) pC dan 116-11933 pC, serta jumlah pola fasa PD negatif dan posisif berjumlah 55-301 dan 24-261. Karakteristik Surface Discharge pada Material PCB terdapat di polaritas negatif dan positif yang mengakibatkan terjadinya pelepasan muatan di permukaan isolasi PCB dengan besar muatan pada masing-masing polaritas. The quality of the electric power system is influenced, among other things, by the quality of the insulation used on the equipment used. The problem that occurs in high-voltage equipment is the quality of insulation that is not in accordance with the equipment used. One sign of damage to the insulation is the emergence of Partial Discharge, an early symptom of damage to the insulation of high-voltage equipment. PD detection can be done by detecting radiation produced by equipment, including Transient Earth Voltage (TEV) detection, or more conventionally, electromagnetic, acoustic, and mechanical wave detection. In this research, an experiment was conducted to measure the Surface Discharge that occurred on the surface of an insulator made of PCB. Measurements were carried out using the IEC 60270 Standard with non-electrical detection using a Loop Antenna sensor. Measurements were made on gas (air) insulating media using circular plate electrodes as a generator of a homogeneous and symmetrical electric field. The results of the research on surface discharge characteristics that occur on acrylic surfaces with homogeneous fields that occur on air insulators obtained data in the form of Negative and Positive PDIV at voltage values of 3.35 kV and 3.37 kV, PD Waveforms at test voltages of 4.5-7 kV with a rising time of 144-301 ns and a decreasing time of 4966-3094 ns, the angle of the PD Phase Pattern at a voltage of 4.5-7 kV in negative and positive polarity is at 198-253 degrees and 22-69 degrees, the magnitude of the PD charge is negative and Positive (-58)-(-8893) pC and 116-11933 pC, the number of negative and positive PD phase patterns is 55-301 and 24-261. The Surface Discharge Characteristics of the PCB Material are in negative and positive polarity, resulting in a discharge on the surface of the PCB insulation with a large charge on each polarity.
Co-Authors Adang Suwandi Ahmad Agus Risdiyanto Ardiansyah, Neris Peri Arief Basuki Arpan Zaeni Arwin Datumaya Wahyudi Sumari Bachri, Karel Octavianus Bambang Anggoro Soedjarno Dedi Tri Laksono, Dedi Tri Deni Tri Laksono Deni Tri Laksono Deny Viviantoro Fatoni, Fendi Imam Fendi Imam Fatoni Hamdani, Yuda M. Hamdani, Yuda Muhammad Hanalde Andre Izzani Mohamed, Amir Jaafar Mustapha, Mariatti Maulana Arifin Moh Nazar, Nazatul Shiema Mohd Jamil, Mohamad Kamarol Monika Faswia Fahmi Monika Faswia Fahmi Naohiro Hozumi Naohiro Hozumi Neris Peri Ardiansyah Nhet Ra Nor Asiah Muhamad Noviadi A. Rachman Nugraha, Farradita Nurdiansyah, Rian Pratama, Rizki Wahyu Rachmawati, . Rhamdhani, Taufik Sinurat, Michael Stevano Suwarno Suwarno Syazwani Mansor, Noor Tomohiro Kawashima Trinurkalid Sumarwoto Ummul Khair Viviantoro, Deny Yoshinobu Murakami Yuda Muhammad Hamdani Yushan Yushan Yushan, Yushan Zaeni, Arpan