Effect of Fe3O4 nanoparticles on breakdown property and space charge distribution of propylene carbonate under high voltage impulse

2016 ◽  
Author(s):  
Hongda Guo ◽  
Wenxia Sima ◽  
He Song
Keyword(s):  
Space Charge ◽  
Charge Distribution ◽  
Propylene Carbonate ◽  
High Voltage ◽  
Space Charge Distribution

Electric field and space charge distribution measurement in transformer oil struck by impulsive high voltage

2015 ◽  
Vol 107 (8) ◽  
pp. 082905 ◽  
Author(s):  
Wenxia Sima ◽  
Hongda Guo ◽  
Qing Yang ◽  
He Song ◽  
Ming Yang ◽  
...  
Keyword(s):  
Electric Field ◽  
Space Charge ◽  
Charge Distribution ◽  
High Voltage ◽  
Transformer Oil ◽  
Distribution Measurement ◽  
Space Charge Distribution

scholarly journals Comparison on space charge and voltage distribution of high voltage insulator subjected to different contamination levels

2019 ◽  
Vol 8 (3) ◽  
pp. 769-776
Author(s):  
N. A. Samuri ◽  
Nordiana Azlin binti Othman ◽  
M. A. M. Piah ◽  
N. A. M. Jamail ◽  
H. Rosli
Keyword(s):  
Space Charge ◽  
Charge Distribution ◽  
High Voltage ◽  
Transmission Lines ◽  
Voltage Distribution ◽  
Space Charge Distribution ◽  
Voltage Insulator ◽  
Porcelain Insulators ◽  
Four Levels ◽  
Contamination Levels

This paper presents the study of space charge distribution on high voltage (HV) insulators under different levels of contamination. Two types of HV insulators were used in this work particularly glass and porcelain insulators. A string of 4-unit glass and porcelain insulators with 33 kV of lines voltage was designed and simulated using QuickfieldTM software. Four levels of contamination layer with different thickness have been applied on the surface of insulators to observe the effect of space charge distribution. Simulation results show that different types of insulators used at transmission lines give different effects on charge and voltage distribution. It is also found that the amplitude of charge for a single porcelain insulator is much higher compared to a single glass insulator. Similarly for a string of 4-unit insulators, the voltage distribution along the creepage distance of porcelain insulators is much higher compared to glass insulators under all contamination levels.

Comparative Study on Space Charge Distribution Measurements using PEA and PWP Methods on High Voltage Insulation

2013 ◽  
Vol 64 (4) ◽  
Author(s):  
N. A. Othman ◽  
M. A. M. Piah ◽  
Z. Adzis ◽  
N. A. Ahmad
Keyword(s):  
Space Charge ◽  
Charge Distribution ◽  
High Voltage ◽  
Electrical Breakdown ◽  
Accelerated Aging ◽  
Premature Aging ◽  
Internal Electric Field ◽  
Space Charge Distribution ◽  
Solid Insulator ◽  
Local Space

Major drawbacks to high voltage insulator especially on electrical aging process have been an issue for decades. The internal electric field distribution due to the presence of local space charge will distort, which in turn may cause the insulating material to degrade and finally can lead to accelerated aging and electrical breakdown. Comprehension of space charge buildup in solid insulator is crucial to determine how aging occurs, thus enabling the prediction of insulator lifetime. Space charge measurement has been extensively researched in recent years and has become a common method of investigating solid insulator properties. Pressure Wave Propagation (PWP) and Pulsed Electro-Acoustic (PEA) are non-destructive dielectric testing methods used to determine the space charge distribution within the insulation. This paper presents the basic principles, typical measurement setup and comparison of results from several published papers on application of PWP and PEA methods to investigate space charge accumulation. The space charge distribution in the sample is measured as current and voltage signals obtained from PWP and PEA methods respectively. Judging from extracted results of other research, both methods show the capability to detect premature aging activities in the insulator, which is necessary for condition monitoring of high voltage insulators.

scholarly journals Effect of Fe3O4 nanoparticles on space charge distribution in propylene carbonate under impulse voltage

AIP Advances ◽  
2015 ◽  
Vol 5 (12) ◽  
pp. 127136 ◽  
Author(s):  
Wenxia Sima ◽  
He Song ◽  
Qing Yang ◽  
Hongda Guo ◽  
Qiulin Chen
Keyword(s):  
Space Charge ◽  
Charge Distribution ◽  
Propylene Carbonate ◽  
Fe3o4 Nanoparticles ◽  
Space Charge Distribution ◽  
Impulse Voltage

Space Charge Distribution Measurement in FEP Film Irradiated by Proton

2020 ◽  
Vol 140 (10) ◽  
pp. 504-505
Author(s):  
Kaisei Enoki ◽  
Ushio Chiba ◽  
Hiroaki Miyake ◽  
Yasuhiro Tanaka
Keyword(s):  
Space Charge ◽  
Charge Distribution ◽  
Distribution Measurement ◽  
Space Charge Distribution
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