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Showing 1-25 of 501 resultsfor "Index Terms":Discharge Inception
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Investigation on partial discharge inception voltage and discharge pattern of simulated defect cable system
C. Suwanasri;T. Sangpakdeejit;N. Vipulum;P. Fuangpian;S. Ruankon;T. Suwanasri
2016 International Conference on Condition Monitoring and Diagnosis (CMD)
Year: 2016 | Conference Paper |
Cited by: Papers (3)
This paper presents an investigation on partial discharge (PD) inception voltage and PD pattern of simulated defect underground cable caused by two types of supply voltages such as alternating current and direct current voltage sources. The 50 Hz alternating current (AC) source from test transformer represents the nominal voltage supplying in power system while direct current (DC) source from rect...Show More
Estimation of partial discharge inception voltages in the ambient medium of SF6
2008 IEEE Power and Energy Society General Meeting - Conversion and Delivery of Electrical Energy in the 21st Century
Year: 2008 | Conference Paper |
Cited by: Papers (1)
In this paper we report a technique for estimating the partial discharge (PD) inception voltages in case of discharges occurring at the interface as well as in voids in the ambient medium of sulphur hexafluoride gas (SF6). Since occurrence of PD is a phenomenon dependent on upon many factors such as the type of gas in the void, the gas pressure, surface properties of the void, size and shape of th...Show More
A Building Block to the Design of Partial Discharge Free HV and MV Cables: Modeling Defects and Discharge Inception Voltage
It is well assessed that partial discharges, PD, are one of the major causes of MV and HV cable system breakdown, thus investigating partial discharge phenomenology and harmfulness is a key topic in relation to electric asset component reliability. Defects, which are able to generate partial discharges can be ineludible in cable systems, from manufacturing to on-field assembly, but they can also b...Show More
Partial Discharge Inception Voltage Measurement for an Artificially Created Void Inside the Solid Dielectric
2019 2nd International Conference on Smart Grid and Renewable Energy (SGRE)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
All the electrical equipment are provided with insulation material for their safe and reliable operation; hence insulation material quality contributes to the lifespan of the equipment. Partial Discharge (PD) test on solid insulation is one of the methods that determine the quality of insulation. PD activity is a physical phenomenon, in which solid insulation experiences a partial breakdown in the...Show More
A Townsend’s secondary ionization coefficient estimation method for partial discharge inception voltage prediction for insulating polymers
Y. Kemari;C. Van de Steen;G. Belijar;L. Laudebat;S. Diaham;Z. Valdez-Nava;C. Abadie
2022 IEEE 4th International Conference on Dielectrics (ICD)
Year: 2022 | Conference Paper |
Cited by: Papers (3)
Paschen’s law established from Townsend’s theory has been widely used to compute partial discharges inception voltage (PDIV) in electrical insulation systems (EIS) using numerical models. The accuracy of PDIV calculation depends on a number of parameters such as the Townsend’s secondary ionization coefficient \gamma. The present paper aims to propose a straightforward way to obtain a first estim...Show More
The partial discharge inception and breakdown voltage distribution of metal protrusion in SF6 gas
2016 IEEE International Power Modulator and High Voltage Conference (IPMHVC)
Year: 2016 | Conference Paper |
Gas insulated switchgear (GIS) is the most important equipment in grid. It has been widely used in power system for the merits of small size and high reliability. Especially for the city substation, GIS is the preferred power equipment. GIS has the compact structure and it is difficult to repair once there are defects inside the GIS. It is the important step to monitor the defects inside GIS. PD i...Show More
This guide describes the procedure for quality control testing of external discharges on stator coils, bars and windings of large air-cooled ac electric machines.Show More
This guide describes the procedure for quality control testing of external discharges on stator coils, bars and windings of large air-cooled ac electric machines.Show More
Estimation of partial discharge inception voltage of magnet wires under inverter surge voltage by volume-time theory
This paper discusses a novel estimation method for partial discharge inception voltage (PDIV) of magnet wire under inverter surge voltage application. We focused on the generation probability of initial electrons, which induce PD under high electric field and short rise time of surge voltage, by means of Volume-Time theory. We applied the Volume-Time theory to PD inception phenomena in a wedge-sha...Show More
Factors influencing the partial discharge inception voltage in Type I insulation systems
2023 IEEE Electrical Insulation Conference (EIC)
Year: 2023 | Conference Paper |
Cited by: Papers (3)
With the increased use of inverter-fed random wound motors in transport applications the importance of understanding the factors which influence the inception of discharge phenomena in Type I insulation systems increases. This paper describes the influence of temperature, applied voltage type (ac and repetitive pulse), impregnation resin and flexible laminate thickness on the partial discharge inc...Show More
Effect of electrode configurations and gap spacings on partial discharge characteristics of oil-pressboard insulation system
2015 IEEE 11th International Conference on the Properties and Applications of Dielectric Materials (ICPADM)
Year: 2015 | Conference Paper |
Cited by: Papers (3)
Partial Discharge (PD) activity at the interface of oil pressboard begins before full surface discharge. It is visualized as white marks or tree like structures on the surface of aged pressboards. The PD activity can cause irreversible damage to the insulation material due to its thermal and chemical actions. Thus, extensive study is necessary to classify the PD patterns within oil, inside the pre...Show More
Effect of electrode configurations and gap spacings on partial discharge characteristics of oil-pressboard insulation system
Year: 2015 | Conference Paper |
Study of the Influence of Void Defect Size on Partial Discharge Characteristics in Solid Insulation
Bo Ma;Xutao Wu;Xiuguang Li;Xiu Zhou;Qian Zhang;Junhao Li;Xutao Han
2018 IEEE International Conference on High Voltage Engineering and Application (ICHVE)
Year: 2018 | Conference Paper |
Cited by: Papers (2)
Internal void defects of basin insulator in GIS will lead to the partial discharge and long term partial discharge can cause deterioration of insulation. Therefore, taking the circular artificial void inside the epoxy plate model as the research object, this paper set up the generation and detection system to study the partial discharge characteristics on the base of the pulse current method. The ...Show More
Influence of Aircraft-Environment Pressure Range on Negative DC Partial Discharge Inception Voltage
2024 IEEE Texas Power and Energy Conference (TPEC)
Year: 2024 | Conference Paper |
Cited by: Papers (2)
The increasing greenhouse gas emissions have a huge impact on global temperature. The aviation sector contributes to 2.4% of the global CO2 emissions and more than 10% of the transportation emissions are from commercial airplanes in the US. To combat the climatic changes, the goal to achieve net zero emissions by 2050 was set and complete electrification of transportation is one of the many steps ...Show More
Estimation of discharge inception voltages at different pressures in the ambient medium of N2
2008 IEEE/PES Transmission and Distribution Conference and Exposition
Year: 2008 | Conference Paper |
Cited by: Papers (1)
In this paper we report a technique for estimating the partial discharge (PD) inception voltages in case of discharges occurring at the interface as well as in voids in the ambient medium of nitrogen gas (N2). Since occurrence of partial discharge is a phenomenon dependent on thickness of insulation, pressure in the gap, shape of void or cavity etc; all these parameters have to be taken into accou...Show More
Measurement of Spark Discharge Inception Voltage Using CIGRE Method-II Type Metal-Air Gap-Metal Electrode System
Tomoaki Sakakibara;Tomohiro Kawashima;Naohiro Hozumi;Yoshinobu Murakami
2023 International Symposium on Electrical Insulating Materials (ISEIM)
Year: 2023 | Conference Paper |
A minute air gap may become a weak electrical point in an insulation system. A successive partial discharge (PD) in the minute air gap occurs under a low-voltage application. The spark discharge inception voltage under AC voltage (AC-SDIV) was measured by using the CIGRE-Method-II (CM-II) type metal-gap-metal (MGM) electrode system to understand the essential discharge characteristics under low at...Show More
Partial discharge inception voltage and breakdown voltage of micro cellular resin
Naoto Yanaze;Masahiro Kozako;Masayuki Hikita;Keiichi Tomizawa;Makoto Ohya
2015 IEEE Conference on Electrical Insulation and Dielectric Phenomena (CEIDP)
Year: 2015 | Conference Paper |
Cited by: Papers (9)
This paper deals with partial discharge inception voltage (PDIV) and breakdown voltage (BDV) of novel insulating material including multi micro size cavities to reduce its permittivity and wight as well for insulation performance test of high voltage cable and equipment. PDIV of specimen including multi voids with average diameter of 34 μm decrease with X-ray irradiation. The result suggests that ...Show More
Determination of Partial Discharge Inception Voltage and Location of Partial Discharges by Means of Paschen’s Theory and FEM
Guillaume Parent;Mathieu Rossi;Stéphane Duchesne;Patrick Dular
IEEE Transactions on Magnetics
Cited by: Papers (18)
Determining the partial discharge (PD) inception voltage (PDIV) is a key point when designing electrical coils or busbars. In this paper, a method making it possible to calculate the PDIV as well as to locate PDs in windings of any shape is presented. It is based on a 2-D finite-element computation using both dual-i.e., scalar and vector potential-electrostatic formulations and a comparison of the...Show More
Comparison Between PD Inception Voltage and BD Voltage of PPLP in \hbox{LN}_{2} Considering HTS Cable Insulation
Bang-Wook Lee;Won Choi;Young-Min Choi;Yong-Han Kim;Ja-Yoon Koo
With the rapid development of world economics, demand for electricity in metropolitan areas has increased dramatically. The high-temperature superconductivity (HTS) cable is one of the most promising technologies for solving the bottleneck of the transmission system. However, power system planners have not yet considered the HTS cable as a mature technology due to its weak insulation characteristi...Show More
Partial discharge inception voltage investigation of mineral oil: effect of electrode configurations and oil conditions
The aim of this paper is to describe the Partial Discharge Inception Voltage (PDIV) and Partial Discharge (PD) characteristic of mineral oil tested by various electrode configurations. Furthermore, mineral oil with different conditions was investigated under AC voltage. The PDIV and PD of the mineral oil, Nynas Nytro 4000x, with water content about 4 ppm was investigated by using various electrode...Show More
Discharge Inception Characteristics Analysis of Epoxy / Silica Nanocomposites in SF6 Gas using Volume-time theory
Yoshiyuki Inoue;Kotaro Ohzuno;Masahiro Kozako;Masayuki Hikita;Hidetaka Masui;Hiroshi Mitsudome;Hironori Yanase;Kenji Okamoto
2020 International Symposium on Electrical Insulating Materials (ISEIM)
Year: 2020 | Conference Paper |
This paper reports comparison of measured results of partial discharge inception voltage (PDIV) of epoxy/silica (EP/SiO2) composites sample in SF6 gas with estimated one derived from Volume-time theory. The discussion is made to elucidate mechanism of discharge inception in the wedge gap formed between the solid insulation material and SF6 gas. Namely, the dependence of the PD occurrence probabili...Show More
Partial Discharge Investigation of Defective Cable Terminations using Different Voltage Sources
Karma Jamtsho;Thanapong Suwanasri;Nattapon Panmala;Cattareeya Suwanasri
2022 International Conference on Power, Energy and Innovations (ICPEI)
Year: 2022 | Conference Paper |
Cited by: Papers (3)
This paper presents the Partial Discharge (PD) investigation of defective medium voltage (3.6/6(7.2) kV) cable terminations and the impact of using different voltage sources namely AC 50 Hz and Very Low Frequency (VLF) voltage source of 0.1 Hz as supply voltage. The PD is detected by High Frequency Current Transformer (HFCT). Electric field stress investigation is carried out by using Finite Eleme...Show More
The Impact of Cavity Size on Electric Field Distribution and PD Inception Voltage in Epoxy-resin Insulation
B. D. Aliyu;M. N. K.H Rohani;U. Musa;Y. Jibril;S. H. Sulaiman;A. A. Mas’ud;F. Muhammad-Sukki
2023 IEEE 3rd International Conference in Power Engineering Applications (ICPEA)
Year: 2023 | Conference Paper |
Cited by: Papers (2)
Cavities in insulation systems of active high voltage (HV) equipment affect their performance, reliability and useful life periods. Cavities serve as flash points for enhanced field activity leading to ageing from partial discharge (PD) events and subsequent breakdown of the insulation material. In this paper, the impact of cavity diameter on the electric field distribution as well as on PD incept...Show More
On Discharge Inception Voltage for Insulators under Non-uniform Field with AC Voltage
2019 International Conference on Advanced Electrical Engineering (ICAEE)
Year: 2019 | Conference Paper |
Cited by: Papers (1)
In this paper, an analytical expression has been exploited for computing the discharge inception voltage of polluted insulators under a high voltage AC system. This expression was established for DC high voltage. The present contribution is inspired from the modified Peek's law used for calculating the inception voltage of a typical streamer discharge. An experimental investigation of the electric...Show More
High Temperature Partial Discharge Inception Voltage under Repetitive Impulse Voltage Applied to Motorette Samples
Yasutaka Nishigaki;Takakazu Matsuzoe;Sho Takenouchi;Masahiro Kozako;Masayuki Hikita;Takahiro Nakamura;Jintong Sun;Aoto Izumi;Takayuki Sakurai;Kazunari Karasawa;Satoshi Hiroshima
2020 IEEE Electrical Insulation Conference (EIC)
Year: 2020 | Conference Paper |
Cited by: Papers (3)
This paper presents a measurement method for partial discharge inception voltage (PDIV) and repetitive PDIV (RPDIV) of motorette samples with different terminal connections from room temperature to 155°C PDIV and RPDIV characteristics of the motorlet sample up to the high-temperature region were clarified. As a result, PDIV and RPDIV were found to decrease under high temperature environment. These...Show More
High Temperature Partial Discharge Inception Voltage under Repetitive Impulse Voltage Applied to Motorette Samples
Yasutaka Nishigaki;Takakazu Matsuzoe;Sho Takenouchi;Masahiro Kozako;Masayuki Hikita;Takahiro Nakamura;Jintong Sun;Aoto Izumi;Takayuki Sakurai;Kazunari Karasawa;Satoshi Hiroshima
Year: 2020 | Conference Paper |
Estimation of partial discharge inception voltages due to voids in solid sheet insulation
2013 IEEE Electrical Insulation Conference (EIC)
Year: 2013 | Conference Paper |
Cited by: Papers (10)
Defects like formation of voids, cavities, and cracks or inclusion of dust particles/small metallic turnings in the solid insulation of modern power cables may not be completely avoided even under the most stringent manufacturing conditions. These defects or weak points are the vulnerable sites of occurrence of Partial Discharges (PD). A continuous dissipation of energy due to discharges at afore-...Show More
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