Pub Date : 2019-10-01DOI: 10.1109/ICHVEPS47643.2019.9011137
Rian Nurdiansyah, U. Khayam
The existence of partial discharge (PD) in an electrical component is something that is feared. But this partial discharge is also an advantage because it is a sign of initial damage to an insulation before it become breakdown. The characteristics of PD that arise can be a measure of the amount of damage that occurs even can determine the location of the PD itself in some cases. Therefore, it is very important to know the characteristics and categories of PD that occur in an insulation so we can take some precautionary step to prevent the damage from getting worse. Surface discharge is one type of partial discharge that has a medium level of damage to the insulation. It is below internal PD (void), and above corona PD. This surface discharge cannot occur if only using one type of insulation. It takes two types of insulation that have different permittivity, so that there is a difference in ionizing voltage between the two types of insulation used. In this experiment, the properties of surface PD that arise on an object of solid insulation in air and in liquid insulation in the form of mineral oil are being analyze and compared. The experimental standard used is the IEC 60270 as a PD experimental standard that are often used for. The PD detection sensor used is a detecting impedance (RC) sensor to detecting the surface PD that occurs and measure the characteristics of it. As an electric field generator used is a circular plane-plane electrode to produce a homogeneous electric field. From the experiments it was found that PD properties between surface PD in air and in oil no too different in its respond to increase of voltage source. But the phase patterns show that the mechanism of surface discharge that occurs in the object has different progress in how it is can be happen.
{"title":"Comparison of The Characteristics and Mechanism of Surface Discharge Occurence on The Acrylic Surface in Air and Oil Insulation With Circular Plane-Plane Electrodes","authors":"Rian Nurdiansyah, U. Khayam","doi":"10.1109/ICHVEPS47643.2019.9011137","DOIUrl":"https://doi.org/10.1109/ICHVEPS47643.2019.9011137","url":null,"abstract":"The existence of partial discharge (PD) in an electrical component is something that is feared. But this partial discharge is also an advantage because it is a sign of initial damage to an insulation before it become breakdown. The characteristics of PD that arise can be a measure of the amount of damage that occurs even can determine the location of the PD itself in some cases. Therefore, it is very important to know the characteristics and categories of PD that occur in an insulation so we can take some precautionary step to prevent the damage from getting worse. Surface discharge is one type of partial discharge that has a medium level of damage to the insulation. It is below internal PD (void), and above corona PD. This surface discharge cannot occur if only using one type of insulation. It takes two types of insulation that have different permittivity, so that there is a difference in ionizing voltage between the two types of insulation used. In this experiment, the properties of surface PD that arise on an object of solid insulation in air and in liquid insulation in the form of mineral oil are being analyze and compared. The experimental standard used is the IEC 60270 as a PD experimental standard that are often used for. The PD detection sensor used is a detecting impedance (RC) sensor to detecting the surface PD that occurs and measure the characteristics of it. As an electric field generator used is a circular plane-plane electrode to produce a homogeneous electric field. From the experiments it was found that PD properties between surface PD in air and in oil no too different in its respond to increase of voltage source. But the phase patterns show that the mechanism of surface discharge that occurs in the object has different progress in how it is can be happen.","PeriodicalId":6677,"journal":{"name":"2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)","volume":"14 1","pages":"018-023"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89602780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ichveps47643.2019.9011108
{"title":"ICHVEPS 2019 List of Authors","authors":"","doi":"10.1109/ichveps47643.2019.9011108","DOIUrl":"https://doi.org/10.1109/ichveps47643.2019.9011108","url":null,"abstract":"","PeriodicalId":6677,"journal":{"name":"2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)","volume":"36 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88872951","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICHVEPS47643.2019.9011114
Muhammad Fadli Nasution, Fajli Mustafa, Shaga Shaulgara
Transformers is one of the most critical equipments for electrical energy transfers in a power system. In several cases, magnetizing inrush phenomenon can lead to mal-operation of differential & REF protection. The phenomenon of magnetizing inrush is a transient condition that occurs when any abrupt changes of the magnetizing voltage. It is not fault condition, and therefore transformer protection must remain stable during the transient condition.This paper describes and analyzes a case studies where protective relay with magnetizing inrush restraint still send tripping signal when the magnetizing inrush happen. This paper uses fault wave recording to discuss the operation behavior and reasons of corresponding protection relay. The results of the studies confirm that the magnetizing inrush current event affects not only differential protection but also REF protection.
{"title":"Case Studies of Magnetizing Inrush Current Effect on Differential & REF Transformer Protection","authors":"Muhammad Fadli Nasution, Fajli Mustafa, Shaga Shaulgara","doi":"10.1109/ICHVEPS47643.2019.9011114","DOIUrl":"https://doi.org/10.1109/ICHVEPS47643.2019.9011114","url":null,"abstract":"Transformers is one of the most critical equipments for electrical energy transfers in a power system. In several cases, magnetizing inrush phenomenon can lead to mal-operation of differential & REF protection. The phenomenon of magnetizing inrush is a transient condition that occurs when any abrupt changes of the magnetizing voltage. It is not fault condition, and therefore transformer protection must remain stable during the transient condition.This paper describes and analyzes a case studies where protective relay with magnetizing inrush restraint still send tripping signal when the magnetizing inrush happen. This paper uses fault wave recording to discuss the operation behavior and reasons of corresponding protection relay. The results of the studies confirm that the magnetizing inrush current event affects not only differential protection but also REF protection.","PeriodicalId":6677,"journal":{"name":"2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)","volume":"67 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78978386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICHVEPS47643.2019.9011039
Wayan Eka Sastra Wibawa, M. Zainuddin, S. Humena, S. Syafaruddin, S. Manjang
The self-restoration ability in the power system following a temporary fault has become an attention since its contribution to the power system stability. The aim of this study is to analyze the impact of the auto reclose on the transmission line on a radial network stability by using the leader-follower control scheme. The leader-follower control scheme is used to minimize the outage time and to reduce the stress on one of the circuit breakers due to closing on permanent fault. This study is applied to a case of an electrical transmission system 150 kV in Gorontalo Province, Indonesia. Currently, the power transmission system in Gorontalo Province has not applied an auto reclosing scheme yet. This study is simulated in order to provide a stability assessment of: the rotor angle, rotor speed, active and reactive power in line transmission, current flow in line transmission, the voltage on bus, and the frequency on bus. The result of this study indicates that a significant voltage drop occurs on one of the bus in the network following fault.
{"title":"The Impact of The Auto-reclose using Leader-Follower Control Scheme on Transmission Power System Stability Enhancement","authors":"Wayan Eka Sastra Wibawa, M. Zainuddin, S. Humena, S. Syafaruddin, S. Manjang","doi":"10.1109/ICHVEPS47643.2019.9011039","DOIUrl":"https://doi.org/10.1109/ICHVEPS47643.2019.9011039","url":null,"abstract":"The self-restoration ability in the power system following a temporary fault has become an attention since its contribution to the power system stability. The aim of this study is to analyze the impact of the auto reclose on the transmission line on a radial network stability by using the leader-follower control scheme. The leader-follower control scheme is used to minimize the outage time and to reduce the stress on one of the circuit breakers due to closing on permanent fault. This study is applied to a case of an electrical transmission system 150 kV in Gorontalo Province, Indonesia. Currently, the power transmission system in Gorontalo Province has not applied an auto reclosing scheme yet. This study is simulated in order to provide a stability assessment of: the rotor angle, rotor speed, active and reactive power in line transmission, current flow in line transmission, the voltage on bus, and the frequency on bus. The result of this study indicates that a significant voltage drop occurs on one of the bus in the network following fault.","PeriodicalId":6677,"journal":{"name":"2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)","volume":"103 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79055259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICHVEPS47643.2019.9011146
N. P. Ardiansyah, U. Khayam
The occurrence of surface release on high voltage equipment is the Partial Discharge (PD) phenomenon. Partial Discharge measurements are very important to determine the condition of electrical equipment. The cause of the partial discharge is not only old equipment but also from set-up errors and insulation problems. In high-voltage equipment such as cables, circuit breakers, bushings and transformers there are generally surface release phenomena due to aging insulation in high-voltage equipment, aging of insulation caused by heat, electricity, ambient and mechanical factors. Liquid insulation as a dielectric material used in high-voltage equipment functions as insulation and heat transfer or cooling. This study aims to determine the surface release characteristics around the surface edge of the Printed Circuit Board (PCB) with a plate electrode model in liquid insulation (mineral oil). PCBs that have epoxy insulating material (FR-4) are one of the basic ingredients used in the isolation of high voltage equipment but have disadvantages due to pollutants. The measurement of partial discharge is carried out using electric and non-electric methods. Electric methods use RC Detectors and HFCT sensors and nonelectric methods with Loop Antenna sensors. Measurement parameters taken include Partial Discharge Inception (PDIV), partial discharge extinction voltage (PDEV), Partial Discharge waveform, Partial Discharge phase pattern and breakdown voltage. This Partial Discharge phase pattern data is presented in the form of a φ-q-n pattern. In oil isolation testing measurements are carried out at voltage levels of 17 kV, 18, kV, 19 kV, and 20 kV for Partial Discharge waveform parameters and Partial Discharge phase patterns. The test results revealed that in the isolation of oil the PDIV value in surface release testing obtained using RC sensor detectors had a higher Vpp value than the air isolation test. Judging from the value of dielectric strength in PCB surface release testing in oil insulation has a higher value compared to air insulation.
{"title":"Characteristics of Surface Discharge around the edges of a circle the PCB on model Plane-plane electrodes in Oil insulation","authors":"N. P. Ardiansyah, U. Khayam","doi":"10.1109/ICHVEPS47643.2019.9011146","DOIUrl":"https://doi.org/10.1109/ICHVEPS47643.2019.9011146","url":null,"abstract":"The occurrence of surface release on high voltage equipment is the Partial Discharge (PD) phenomenon. Partial Discharge measurements are very important to determine the condition of electrical equipment. The cause of the partial discharge is not only old equipment but also from set-up errors and insulation problems. In high-voltage equipment such as cables, circuit breakers, bushings and transformers there are generally surface release phenomena due to aging insulation in high-voltage equipment, aging of insulation caused by heat, electricity, ambient and mechanical factors. Liquid insulation as a dielectric material used in high-voltage equipment functions as insulation and heat transfer or cooling. This study aims to determine the surface release characteristics around the surface edge of the Printed Circuit Board (PCB) with a plate electrode model in liquid insulation (mineral oil). PCBs that have epoxy insulating material (FR-4) are one of the basic ingredients used in the isolation of high voltage equipment but have disadvantages due to pollutants. The measurement of partial discharge is carried out using electric and non-electric methods. Electric methods use RC Detectors and HFCT sensors and nonelectric methods with Loop Antenna sensors. Measurement parameters taken include Partial Discharge Inception (PDIV), partial discharge extinction voltage (PDEV), Partial Discharge waveform, Partial Discharge phase pattern and breakdown voltage. This Partial Discharge phase pattern data is presented in the form of a φ-q-n pattern. In oil isolation testing measurements are carried out at voltage levels of 17 kV, 18, kV, 19 kV, and 20 kV for Partial Discharge waveform parameters and Partial Discharge phase patterns. The test results revealed that in the isolation of oil the PDIV value in surface release testing obtained using RC sensor detectors had a higher Vpp value than the air isolation test. Judging from the value of dielectric strength in PCB surface release testing in oil insulation has a higher value compared to air insulation.","PeriodicalId":6677,"journal":{"name":"2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)","volume":"38 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77661776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ichveps47643.2019.9011088
Soni Asmaul Fuadi, A. D. Prabowo
Electricity usage not optimal yet in our educational company. Manually button power is a kinda factor that affects electricity usage while it is not used. This situation, using a passive infrared sensor is a big deal to optimizing electricity usage. Passive Infrared Sensor detects the existence of humans in a room by the infrared waves released from the body. That infrared wave is processed by an electronic amplifier to become an action to switch ON/OFF the electricity usage. The implementation of these tools reduces electricity usage by 25% - 30%.
{"title":"Automation of Electricity System PLN UPDL Banjarbaru Using Passive Infrared sensors","authors":"Soni Asmaul Fuadi, A. D. Prabowo","doi":"10.1109/ichveps47643.2019.9011088","DOIUrl":"https://doi.org/10.1109/ichveps47643.2019.9011088","url":null,"abstract":"Electricity usage not optimal yet in our educational company. Manually button power is a kinda factor that affects electricity usage while it is not used. This situation, using a passive infrared sensor is a big deal to optimizing electricity usage. Passive Infrared Sensor detects the existence of humans in a room by the infrared waves released from the body. That infrared wave is processed by an electronic amplifier to become an action to switch ON/OFF the electricity usage. The implementation of these tools reduces electricity usage by 25% - 30%.","PeriodicalId":6677,"journal":{"name":"2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)","volume":"1 1","pages":"244-246"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90733370","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICHVEPS47643.2019.9011143
Alvin Daniel Sorimuda Ritonga, Yulia Erina Sari, S. Suwarno
In recent years, the latest technology, Gas-to-liquid (GTL) has been developed as an alternative to mineral oil. Natural ester oil is derived from vegetable oil. It is biodegradable, non-toxic, non-flammable, and has a higher breakdown voltage. Compared to conventional mineral oils and natural ester oils, GTL based oils are designed with a high level of composition and consistent performance, high purity, excellent resistance to degradation and are essentially sulfur free. In this study, GTL oil, mineral oil and natural ester oil will be compared in performance. Tests carried out for GTL oil, mineral oil and natural ester oil are tests of color scale and appearance, acid content, viscosity, moisture or water content, dielectric losses, breakdown voltage, and Dissolved Gas Analysis (DGA). Increased contaminants and free radicals cause an increase in dielectric losses and a decrease in oil resistivity. In addition, a strong correlation was found between the relative water content of oil and the breakdown voltage.
{"title":"Comparative Study of Liquid Insulating Materials for High Voltage Transformer","authors":"Alvin Daniel Sorimuda Ritonga, Yulia Erina Sari, S. Suwarno","doi":"10.1109/ICHVEPS47643.2019.9011143","DOIUrl":"https://doi.org/10.1109/ICHVEPS47643.2019.9011143","url":null,"abstract":"In recent years, the latest technology, Gas-to-liquid (GTL) has been developed as an alternative to mineral oil. Natural ester oil is derived from vegetable oil. It is biodegradable, non-toxic, non-flammable, and has a higher breakdown voltage. Compared to conventional mineral oils and natural ester oils, GTL based oils are designed with a high level of composition and consistent performance, high purity, excellent resistance to degradation and are essentially sulfur free. In this study, GTL oil, mineral oil and natural ester oil will be compared in performance. Tests carried out for GTL oil, mineral oil and natural ester oil are tests of color scale and appearance, acid content, viscosity, moisture or water content, dielectric losses, breakdown voltage, and Dissolved Gas Analysis (DGA). Increased contaminants and free radicals cause an increase in dielectric losses and a decrease in oil resistivity. In addition, a strong correlation was found between the relative water content of oil and the breakdown voltage.","PeriodicalId":6677,"journal":{"name":"2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)","volume":"9 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87963467","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICHVEPS47643.2019.9011152
Tambi Tambi, S. Manjang, S. Syafaruddin, I. Kitta
The monitoring and identification system is made to monitor leakage currents on aging insulators due to exposure to the external atmosphere. The purpose of this research was monitoring and detection of leakage current as indicators in determining the level of damage to aging insulators to provide information for network maintenance operators in the field. The study used a real-time method by making a distribution line construction design along with its accessories and monitoring tools. Hardware and software were developed to obtain real-time data from aging insulators based on the time domain in tropical conditions. In this paper, the monitoring and identification system has been designed with a good level of security and performance, low power, low cost, and equipped with UV sensors and rainfall sensors. The developed system model with various models and types of aging insulators in real time were monitored using a microcontroller. Then the leakage current (LC) monitoring results will be stored in the microprocessor module in the form of a data logger and can be directly transferred to computers / notebook via wireless communication 915 MHz radio telemetry or GPRS network in real-time controlled by graphical user interface software (GUI) artificial self to display information about the condition of the insulator.
{"title":"Development of Real – Time Monitoring and Identification System of Aging Insulators in the Tropics","authors":"Tambi Tambi, S. Manjang, S. Syafaruddin, I. Kitta","doi":"10.1109/ICHVEPS47643.2019.9011152","DOIUrl":"https://doi.org/10.1109/ICHVEPS47643.2019.9011152","url":null,"abstract":"The monitoring and identification system is made to monitor leakage currents on aging insulators due to exposure to the external atmosphere. The purpose of this research was monitoring and detection of leakage current as indicators in determining the level of damage to aging insulators to provide information for network maintenance operators in the field. The study used a real-time method by making a distribution line construction design along with its accessories and monitoring tools. Hardware and software were developed to obtain real-time data from aging insulators based on the time domain in tropical conditions. In this paper, the monitoring and identification system has been designed with a good level of security and performance, low power, low cost, and equipped with UV sensors and rainfall sensors. The developed system model with various models and types of aging insulators in real time were monitored using a microcontroller. Then the leakage current (LC) monitoring results will be stored in the microprocessor module in the form of a data logger and can be directly transferred to computers / notebook via wireless communication 915 MHz radio telemetry or GPRS network in real-time controlled by graphical user interface software (GUI) artificial self to display information about the condition of the insulator.","PeriodicalId":6677,"journal":{"name":"2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)","volume":"99 1","pages":"213-217"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81051732","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICHVEPS47643.2019.9011105
T. Waris, T. Kawashima, N. Hozumi, Y. Murakami
Hydrophobicity and flashover strength are important properties of outdoor insulators, especially in the tropic region, which have high pollution and high intensity of rainfall. This study examines the impact coal fly ash as a micro filler on static hydrophobicity and DC dry flashover strength of the silicon rubber. The used material is XLR silicon rubber, and coal fly ash (CFA) micro filler. Samples were grouped according CFA filler loading, which consists of six groups CFA filler loading. The result shows that the addition of CFA micro filler affects surface resistivity, the hydrophobicity, and flashover strength of silicon rubber. The hydrophobicity which is presented by contact angle increases with the increasing of filler loading. However, in high filler loading, the hydrophobicity tends to decrease. The similar trend occurs on flashover strength and surface resistivity.
{"title":"The Investigation of the Hydrophobicity and Flashover Strength of Silicon Rubber with Coal Fly Ash (CFA) Micro-Filler","authors":"T. Waris, T. Kawashima, N. Hozumi, Y. Murakami","doi":"10.1109/ICHVEPS47643.2019.9011105","DOIUrl":"https://doi.org/10.1109/ICHVEPS47643.2019.9011105","url":null,"abstract":"Hydrophobicity and flashover strength are important properties of outdoor insulators, especially in the tropic region, which have high pollution and high intensity of rainfall. This study examines the impact coal fly ash as a micro filler on static hydrophobicity and DC dry flashover strength of the silicon rubber. The used material is XLR silicon rubber, and coal fly ash (CFA) micro filler. Samples were grouped according CFA filler loading, which consists of six groups CFA filler loading. The result shows that the addition of CFA micro filler affects surface resistivity, the hydrophobicity, and flashover strength of silicon rubber. The hydrophobicity which is presented by contact angle increases with the increasing of filler loading. However, in high filler loading, the hydrophobicity tends to decrease. The similar trend occurs on flashover strength and surface resistivity.","PeriodicalId":6677,"journal":{"name":"2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)","volume":"28 1","pages":"175-179"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85302174","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2019-10-01DOI: 10.1109/ICHVEPS47643.2019.9011122
U. Khayam, Dede Furqon Nurjaman, R. Rachmawati
This paper deals with the improvement of performance of partial discharge (PD) detector by modification of Pi-Attenuator circuit and ultra wide band amplifier of impedance matching circuit. PD occurrence is the early indicator of power apparatus insulation failure. The detection method of this early symptom toward failure is indispensable. PD cause an electrical current in the ultra wide band (UWB) frequency up to several GHz. In order to obtain overall spectrum of PD signal, the bandwidth of PD measurement system should be wider than the bandwidth of PD signal. One of the methods to measure PD signals in UWB is by using impedance matching circuit (IMC) as a coupling device in the PD measurement system. The IMC consists of attenuator circuit and UWB amplifier. The impedance of the IMC should be the same as the impedance characteristic of the coaxial and the internal cables of the oscilloscope to optimize the power transfer generated by PD current. The performance of PD detector is improved by modification of pi-attenuator and wide band amplifier of IMC. The circuit design is conducted by simulation model using Advanced Design System 2014 (ADS2014) software to identify the circuit characteristics by performing S-parameter simulation.
本文讨论了通过改进pi衰减电路和阻抗匹配电路的超宽带放大电路来提高局部放电检测器的性能。局部放电的发生是电力设备绝缘失效的早期征兆。这种对故障早期症状的检测方法是必不可少的。PD产生的电流在超宽带(UWB)频率高达几GHz。为了获得局部放电信号的整体频谱，局部放电测量系统的带宽应大于局部放电信号的带宽。在UWB中测量PD信号的方法之一是在PD测量系统中使用阻抗匹配电路(IMC)作为耦合器件。IMC由衰减电路和超宽带放大器组成。IMC的阻抗应与示波器同轴电缆和内部电缆的阻抗特性一致，以优化PD电流产生的功率传输。通过对pi衰减器和IMC宽带放大器的改进，提高了PD检测器的性能。采用ADS2014 (Advanced design System 2014)软件建立仿真模型进行电路设计，通过s参数仿真识别电路特性。
{"title":"Improvement of Performance of PD Detector by Modification of Pi-Attenuator Circuit and Ultrawide Band Amplifier","authors":"U. Khayam, Dede Furqon Nurjaman, R. Rachmawati","doi":"10.1109/ICHVEPS47643.2019.9011122","DOIUrl":"https://doi.org/10.1109/ICHVEPS47643.2019.9011122","url":null,"abstract":"This paper deals with the improvement of performance of partial discharge (PD) detector by modification of Pi-Attenuator circuit and ultra wide band amplifier of impedance matching circuit. PD occurrence is the early indicator of power apparatus insulation failure. The detection method of this early symptom toward failure is indispensable. PD cause an electrical current in the ultra wide band (UWB) frequency up to several GHz. In order to obtain overall spectrum of PD signal, the bandwidth of PD measurement system should be wider than the bandwidth of PD signal. One of the methods to measure PD signals in UWB is by using impedance matching circuit (IMC) as a coupling device in the PD measurement system. The IMC consists of attenuator circuit and UWB amplifier. The impedance of the IMC should be the same as the impedance characteristic of the coaxial and the internal cables of the oscilloscope to optimize the power transfer generated by PD current. The performance of PD detector is improved by modification of pi-attenuator and wide band amplifier of IMC. The circuit design is conducted by simulation model using Advanced Design System 2014 (ADS2014) software to identify the circuit characteristics by performing S-parameter simulation.","PeriodicalId":6677,"journal":{"name":"2019 2nd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)","volume":"6 1","pages":"1-5"},"PeriodicalIF":0.0,"publicationDate":"2019-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73395731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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