Jean Pierre UWIRINGIYIMANA - Academia.edu (original) (raw)
Uploads
Papers by Jean Pierre UWIRINGIYIMANA
2023 4th International Conference on High Voltage Engineering and Power Systems (ICHVEPS)
2022 9th International Conference on Condition Monitoring and Diagnosis (CMD)
IEEE Access
This article presents a design of ultra-high frequency (UHF), ultra-wide band (UWB) antenna used ... more This article presents a design of ultra-high frequency (UHF), ultra-wide band (UWB) antenna used for partial discharge (PD) detection on high voltage and medium voltage power system equipment. The proposed UHF antenna has a working frequency band of 1.2GHz-4.5GHz, covering a total bandwidth of 3.3GHz with a return loss of less than-10dB in the entire antenna's operating frequency. The computer simulation technology (CST) Microwave Studio software was used to design, simulate and optimize the proposed antenna. Upon simulation and optimization process, the antenna prototype was fabricated on the FR-4 substrate of 1.6 mm thickness and dielectric permittivity of 4.4. This antenna has a compact size of 100mm × 100mm.The radiating patch and the ground plane of this antenna are made of annealed copper whose thickness is 0.035mm. The simulations and measurement results for the proposed antenna are in a good agreement, and the return loss of this antenna is less than −10dB with voltage standing wave ratio, VSWR, < 2 within the frequency range of interest. The proposed antenna performance in PD sensing is compared with a commercial high-frequency current transformer, HFCT. To validate the sensitivity performance of the designed antenna, experimental PD measurements were carried out by using an epoxy slab inserted between two parallel plates electrode model, in order to generate surface discharge on the insulator, and using a needle-plate electrode configuration to generate corona discharge in transformer oil. Based on PD measurement results, it was shown that the designed antenna has a high sensitivity, which make it a suitable candidate for UHF partial discharge monitoring on high voltage and medium voltage power assets. INDEX TERMS Surface discharge, corona discharge, UHF antenna, HFCT, UHF PD monitoring.
IOP Conference Series: Materials Science and Engineering, 2020
Partial discharge (PD) has been used as a reliable diagnostic technique for High voltage equipmen... more Partial discharge (PD) has been used as a reliable diagnostic technique for High voltage equipment. UHF methods have been widely applied for the detection of electromagnetic waves emitted from PD source in High Voltage equipment. EM wave propagation produced by PD can be detected by using UHF sensors. This paper discusses the new design of double layer bowtie antenna with modification of the wing edge of the antenna as a UHF sensor for PD detection in air insulation. The double layer bowtie antenna was designed by using FR4-epoxy substrate type and later on printed on PCB. The 3D-HFSS software was used to design the bowtie antenna. Based on simulation results of double layer bowtie antenna, the optimum design for PD measurement was obtained with a minimum return loss (RL) of -34.7 dB, the bandwidth of 560 MHz, and Voltage Standing Wave Ratio (VSWR) of 1.03. Based on the measurement results for the designed bowtie antenna by using the Vector Network Analyser (VNA), the bowtie antenna...
IOP Conference Series: Materials Science and Engineering, 2020
The reliability of the power system cannot be achieved without good insulation quality of the hig... more The reliability of the power system cannot be achieved without good insulation quality of the high voltage apparatus. The Ultra-high frequency (UHF) method has been applied and proven to be accurate in detecting partial discharge (PD) signals emitted from the PD source in the form of electromagnetic waves. This paper discusses the design and application of double layer bowtie antenna and single layer bowtie antenna as UHF sensors for partial discharge detection in air insulation. The PD measurement results obtained by using the designed double layer bowtie antenna were compared with PD measurement results obtained by using the single layer bowtie antenna. The PD characteristics of induced EM waves detected by double layer bowtie antenna and single layer bowtie have been analysed. Based on the simulation results, the double layer bowtie antenna has a minimum return loss values of -31.54 dB and -33.43 dB, with corresponding resonance frequency values of 1.7 GHz and 2.7 GHz, with a tot...
IEEE Access
Partial discharges (PD) are the most common and harmful threat to the health of electrical insula... more Partial discharges (PD) are the most common and harmful threat to the health of electrical insulation of high voltage (HV) and high field (HF) equipment. The occurrence of PD activity in HV and MV equipment is at the same time a cause and a sign of insulation degradation that may eventually result in the breakdown of the HV power equipment. For the safe and reliable operation of HV power equipment, continuous PD monitoring needs to be conducted conveniently to prevent any unplanned power outages and damage to electrical power equipment. The ultra-high frequency (UHF) PD measurement method has been widely used as an effective technique to detect PD activity on HV power equipment due to its noninvasive principle. To enable PD detection accuracy, there is still a need for more sensitive PD sensors that can assist the UHF PD monitoring system by suppressing ambient background noise and low-frequency electromagnetic interferences from telecommunication such as GSM signals. To tackle the sensitivity issues, this article presents a new design of ultra-wideband (UWB) microstrip patch antenna that is capable of effective suppression of low-frequency interference signals. The proposed antenna, designed, simulated, and optimized using the CST Microwave Studio software, has a bandwidth of 3.3GHz, below-10dB, in the operating frequency range of 1.2GHz-4.5GHz. The prototype of this antenna, printed on an FR4 substrate of a thickness of 1.6mm and a dielectric constant of 4.4, featuring a compact size of 100mm × 100mm × 1.6mm, was implemented to detect PD through laboratory experiments. This paper shows that the designed UWB antenna has high sensitivity, good noise rejection and it is, therefore, a promising candidate sensor for PD detection on HV equipment.
The measurement of partial discharge (PD) by detecting the released energy from the PD source in ... more The measurement of partial discharge (PD) by detecting the released energy from the PD source in the form of electromagnetic wave during the corona discharge(discharge in air) by using Ultra-High Frequency (UHF) antenna has been an accurate diagnostic technique to determine the condition and quality of the insulation system in high voltage equipements. The UHF sensors have shown a great advantage in the detection of partial discharge because they are capable to detect partial discharge signal online without the need of prior shutdown of the high voltage apparatus. This paper discuss the measurement of partial discharge in air insulation by using the designed UHF double layer bowtie antenna with modified antenna wings edges. The double layer bowtie antenna was used to detect PD based on EM waves induced by PD in air insulation. The PD measurement results obtained by using the designed double layer bowtie were compared with PD measurements results obtained by using the RC detector whi...
2021 3rd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)
2017 International Conference on High Voltage Engineering and Power Systems (ICHVEPS), 2017
This paper discusses about noise measurement in the high voltage laboratory by using high frequen... more This paper discusses about noise measurement in the high voltage laboratory by using high frequency current transformer (HFCT) and loop antenna. This paper explains how to measure the noise characteristics by using two sensors: HFCT and loop antenna. The measurement of noise characteristics was based on the measurement of background noise when the power source of the experiment system is off. The experiment is intended to determine the amount of noise which naturally appears in the observed system. The background noise measurement was highly dependent on the environmental conditions while doing experiment. The level of the noise in pico coulomb(pC) was determined based on the calibration results of the relation between the charge (pC) injected by pC Calibrator and the maximum voltage (Vmax) measured by using HFCT. It is observed that the highest noise detected by HFCT was 12.8 mV or 13.62pC which was detected on Thursday at 10:00AM while the lowest noise detected by the same HFCT wa...
2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)
The reliability of the power system depends on the quality of the electrical insulation system of... more The reliability of the power system depends on the quality of the electrical insulation system of high voltage power equipment. Partial discharge (PD) activity in the power apparatus is an indication of insulation degradation due to the presence of defects in the insulation. The occurrence of a partial discharge activity in the insulation may lead to a catastrophic breakdown of the power equipment and may cause a power outage and penalty costs to the power utilities. A Partial discharge monitoring system on a power transformer is an effective and accurate technique for inspecting the insulation condition and identifying potential faults in power transformers. UHF sensors such as UHF Antennas play a vital role in the UHF PD monitoring system. However, UHF sensors still have sensitivity and accuracy issues in detecting partial discharge, especially in online PD monitoring, where there is a high level of electromagnetic interference. To address noise disturbance issues that affect the UHF antenna's sensitivity, we have designed an ultra-wideband (UWB) circular microstrip patch antenna operating in the UHF range. The designed antenna was simulated and optimized using HFSS software. The antenna was designed on FR4-epoxy substrate whose thickness is 1.6mm and dielectric permittivity of 4.4. The radiating patch and ground plane of the antenna are made of a perfect electric conductor (PEC). The designed microstrip patch antenna has a working frequency from 1.18GHz to 3GHz with three frequency bands at three resonance frequencies of 1.3GHz, 2.2GHz, and 2.83GHz respectively. The multiband behaviors will allow this antenna to suppress noise such as noise due to corona and electromagnetic interferences from telecommunication such as GSM.
2021 56th International Universities Power Engineering Conference (UPEC)
TECHNO-SOCIO EKONOMIKA
Internet technology has become an important part and brings big changes in human life. Internet u... more Internet technology has become an important part and brings big changes in human life. Internet users continue to grow significantly every year, especially in Indonesia, reaching approximately 73.7% of the total population, this figure is the result of a survey conducted by APJII (Association of Indonesian Internet Service Providers) for the period 2019-2020 (Q2). However, the use of the internet also has a negative impact on individuals and the environment. One of the important issues that have become the focus in the last two decades is internet addiction disorder and gadget addiction disorder. Internet addiction arises because of excessive use of the internet that causes negative effects or a tendency to cause symptoms of abuse. In this study, we conducted a survey of 2014 respondents with various parameters such as age distribution from children to seniors, type of work, educational background, how long have they been using gadgets, to the duration of accessing social media per day. All these parameters will be analyzed using the chi square to calculate their correlation to internet addiction and gadgets based on the IAT (Internet Addiction Test) instrument. From the test results, the IAT measuring instrument is considered valid and reliable. From the measurement results of 2014 respondents in Indonesia for internet / social media addiction conditions occurred in the category of children 0.16% (1 respondent), 73% adolescents (467 respondents), 23% adults (147 respondents), and the elderly 3.94% (23 respondents). While gadget addiction occurs in the adolescent category as much as 75% are addicted (382 respondents), the adult category is 23% addicted (117 respondents), the elderly category is 2% addicted (11 respondents).
2023 4th International Conference on High Voltage Engineering and Power Systems (ICHVEPS)
2022 9th International Conference on Condition Monitoring and Diagnosis (CMD)
IEEE Access
This article presents a design of ultra-high frequency (UHF), ultra-wide band (UWB) antenna used ... more This article presents a design of ultra-high frequency (UHF), ultra-wide band (UWB) antenna used for partial discharge (PD) detection on high voltage and medium voltage power system equipment. The proposed UHF antenna has a working frequency band of 1.2GHz-4.5GHz, covering a total bandwidth of 3.3GHz with a return loss of less than-10dB in the entire antenna's operating frequency. The computer simulation technology (CST) Microwave Studio software was used to design, simulate and optimize the proposed antenna. Upon simulation and optimization process, the antenna prototype was fabricated on the FR-4 substrate of 1.6 mm thickness and dielectric permittivity of 4.4. This antenna has a compact size of 100mm × 100mm.The radiating patch and the ground plane of this antenna are made of annealed copper whose thickness is 0.035mm. The simulations and measurement results for the proposed antenna are in a good agreement, and the return loss of this antenna is less than −10dB with voltage standing wave ratio, VSWR, < 2 within the frequency range of interest. The proposed antenna performance in PD sensing is compared with a commercial high-frequency current transformer, HFCT. To validate the sensitivity performance of the designed antenna, experimental PD measurements were carried out by using an epoxy slab inserted between two parallel plates electrode model, in order to generate surface discharge on the insulator, and using a needle-plate electrode configuration to generate corona discharge in transformer oil. Based on PD measurement results, it was shown that the designed antenna has a high sensitivity, which make it a suitable candidate for UHF partial discharge monitoring on high voltage and medium voltage power assets. INDEX TERMS Surface discharge, corona discharge, UHF antenna, HFCT, UHF PD monitoring.
IOP Conference Series: Materials Science and Engineering, 2020
Partial discharge (PD) has been used as a reliable diagnostic technique for High voltage equipmen... more Partial discharge (PD) has been used as a reliable diagnostic technique for High voltage equipment. UHF methods have been widely applied for the detection of electromagnetic waves emitted from PD source in High Voltage equipment. EM wave propagation produced by PD can be detected by using UHF sensors. This paper discusses the new design of double layer bowtie antenna with modification of the wing edge of the antenna as a UHF sensor for PD detection in air insulation. The double layer bowtie antenna was designed by using FR4-epoxy substrate type and later on printed on PCB. The 3D-HFSS software was used to design the bowtie antenna. Based on simulation results of double layer bowtie antenna, the optimum design for PD measurement was obtained with a minimum return loss (RL) of -34.7 dB, the bandwidth of 560 MHz, and Voltage Standing Wave Ratio (VSWR) of 1.03. Based on the measurement results for the designed bowtie antenna by using the Vector Network Analyser (VNA), the bowtie antenna...
IOP Conference Series: Materials Science and Engineering, 2020
The reliability of the power system cannot be achieved without good insulation quality of the hig... more The reliability of the power system cannot be achieved without good insulation quality of the high voltage apparatus. The Ultra-high frequency (UHF) method has been applied and proven to be accurate in detecting partial discharge (PD) signals emitted from the PD source in the form of electromagnetic waves. This paper discusses the design and application of double layer bowtie antenna and single layer bowtie antenna as UHF sensors for partial discharge detection in air insulation. The PD measurement results obtained by using the designed double layer bowtie antenna were compared with PD measurement results obtained by using the single layer bowtie antenna. The PD characteristics of induced EM waves detected by double layer bowtie antenna and single layer bowtie have been analysed. Based on the simulation results, the double layer bowtie antenna has a minimum return loss values of -31.54 dB and -33.43 dB, with corresponding resonance frequency values of 1.7 GHz and 2.7 GHz, with a tot...
IEEE Access
Partial discharges (PD) are the most common and harmful threat to the health of electrical insula... more Partial discharges (PD) are the most common and harmful threat to the health of electrical insulation of high voltage (HV) and high field (HF) equipment. The occurrence of PD activity in HV and MV equipment is at the same time a cause and a sign of insulation degradation that may eventually result in the breakdown of the HV power equipment. For the safe and reliable operation of HV power equipment, continuous PD monitoring needs to be conducted conveniently to prevent any unplanned power outages and damage to electrical power equipment. The ultra-high frequency (UHF) PD measurement method has been widely used as an effective technique to detect PD activity on HV power equipment due to its noninvasive principle. To enable PD detection accuracy, there is still a need for more sensitive PD sensors that can assist the UHF PD monitoring system by suppressing ambient background noise and low-frequency electromagnetic interferences from telecommunication such as GSM signals. To tackle the sensitivity issues, this article presents a new design of ultra-wideband (UWB) microstrip patch antenna that is capable of effective suppression of low-frequency interference signals. The proposed antenna, designed, simulated, and optimized using the CST Microwave Studio software, has a bandwidth of 3.3GHz, below-10dB, in the operating frequency range of 1.2GHz-4.5GHz. The prototype of this antenna, printed on an FR4 substrate of a thickness of 1.6mm and a dielectric constant of 4.4, featuring a compact size of 100mm × 100mm × 1.6mm, was implemented to detect PD through laboratory experiments. This paper shows that the designed UWB antenna has high sensitivity, good noise rejection and it is, therefore, a promising candidate sensor for PD detection on HV equipment.
The measurement of partial discharge (PD) by detecting the released energy from the PD source in ... more The measurement of partial discharge (PD) by detecting the released energy from the PD source in the form of electromagnetic wave during the corona discharge(discharge in air) by using Ultra-High Frequency (UHF) antenna has been an accurate diagnostic technique to determine the condition and quality of the insulation system in high voltage equipements. The UHF sensors have shown a great advantage in the detection of partial discharge because they are capable to detect partial discharge signal online without the need of prior shutdown of the high voltage apparatus. This paper discuss the measurement of partial discharge in air insulation by using the designed UHF double layer bowtie antenna with modified antenna wings edges. The double layer bowtie antenna was used to detect PD based on EM waves induced by PD in air insulation. The PD measurement results obtained by using the designed double layer bowtie were compared with PD measurements results obtained by using the RC detector whi...
2021 3rd International Conference on High Voltage Engineering and Power Systems (ICHVEPS)
2017 International Conference on High Voltage Engineering and Power Systems (ICHVEPS), 2017
This paper discusses about noise measurement in the high voltage laboratory by using high frequen... more This paper discusses about noise measurement in the high voltage laboratory by using high frequency current transformer (HFCT) and loop antenna. This paper explains how to measure the noise characteristics by using two sensors: HFCT and loop antenna. The measurement of noise characteristics was based on the measurement of background noise when the power source of the experiment system is off. The experiment is intended to determine the amount of noise which naturally appears in the observed system. The background noise measurement was highly dependent on the environmental conditions while doing experiment. The level of the noise in pico coulomb(pC) was determined based on the calibration results of the relation between the charge (pC) injected by pC Calibrator and the maximum voltage (Vmax) measured by using HFCT. It is observed that the highest noise detected by HFCT was 12.8 mV or 13.62pC which was detected on Thursday at 10:00AM while the lowest noise detected by the same HFCT wa...
2021 IEEE International Conference on the Properties and Applications of Dielectric Materials (ICPADM)
The reliability of the power system depends on the quality of the electrical insulation system of... more The reliability of the power system depends on the quality of the electrical insulation system of high voltage power equipment. Partial discharge (PD) activity in the power apparatus is an indication of insulation degradation due to the presence of defects in the insulation. The occurrence of a partial discharge activity in the insulation may lead to a catastrophic breakdown of the power equipment and may cause a power outage and penalty costs to the power utilities. A Partial discharge monitoring system on a power transformer is an effective and accurate technique for inspecting the insulation condition and identifying potential faults in power transformers. UHF sensors such as UHF Antennas play a vital role in the UHF PD monitoring system. However, UHF sensors still have sensitivity and accuracy issues in detecting partial discharge, especially in online PD monitoring, where there is a high level of electromagnetic interference. To address noise disturbance issues that affect the UHF antenna's sensitivity, we have designed an ultra-wideband (UWB) circular microstrip patch antenna operating in the UHF range. The designed antenna was simulated and optimized using HFSS software. The antenna was designed on FR4-epoxy substrate whose thickness is 1.6mm and dielectric permittivity of 4.4. The radiating patch and ground plane of the antenna are made of a perfect electric conductor (PEC). The designed microstrip patch antenna has a working frequency from 1.18GHz to 3GHz with three frequency bands at three resonance frequencies of 1.3GHz, 2.2GHz, and 2.83GHz respectively. The multiband behaviors will allow this antenna to suppress noise such as noise due to corona and electromagnetic interferences from telecommunication such as GSM.
2021 56th International Universities Power Engineering Conference (UPEC)
TECHNO-SOCIO EKONOMIKA
Internet technology has become an important part and brings big changes in human life. Internet u... more Internet technology has become an important part and brings big changes in human life. Internet users continue to grow significantly every year, especially in Indonesia, reaching approximately 73.7% of the total population, this figure is the result of a survey conducted by APJII (Association of Indonesian Internet Service Providers) for the period 2019-2020 (Q2). However, the use of the internet also has a negative impact on individuals and the environment. One of the important issues that have become the focus in the last two decades is internet addiction disorder and gadget addiction disorder. Internet addiction arises because of excessive use of the internet that causes negative effects or a tendency to cause symptoms of abuse. In this study, we conducted a survey of 2014 respondents with various parameters such as age distribution from children to seniors, type of work, educational background, how long have they been using gadgets, to the duration of accessing social media per day. All these parameters will be analyzed using the chi square to calculate their correlation to internet addiction and gadgets based on the IAT (Internet Addiction Test) instrument. From the test results, the IAT measuring instrument is considered valid and reliable. From the measurement results of 2014 respondents in Indonesia for internet / social media addiction conditions occurred in the category of children 0.16% (1 respondent), 73% adolescents (467 respondents), 23% adults (147 respondents), and the elderly 3.94% (23 respondents). While gadget addiction occurs in the adolescent category as much as 75% are addicted (382 respondents), the adult category is 23% addicted (117 respondents), the elderly category is 2% addicted (11 respondents).