scholarly journals Effect of Space Charge Density and High Voltage Breakdown of Surface Modified Alumina Reinforced Epoxy Composites

2013 ◽  
Vol 14 (3) ◽  
pp. 121-124 ◽  
Author(s):  
Himel Chakraborty ◽  
Arijit Sinha ◽  
Sumit Chabri ◽  
Nandagopal Bhowmik
Keyword(s):  
Charge Density ◽  
Space Charge ◽  
High Voltage ◽  
Space Charge Density ◽  
Epoxy Composites ◽  
Modified Alumina ◽  
High Voltage Breakdown ◽  
Surface Modified ◽  
Voltage Breakdown

scholarly journals Development and Application of a Wireless Sensor for Space Charge Density Measurement in an Ultra-High-Voltage, Direct-Current Environment

2016 ◽  
Author(s):  
Encheng Xin ◽  
Yong Ju ◽  
Haiwen Yuan
Keyword(s):  
Charge Density ◽  
Space Charge ◽  
High Voltage ◽  
Direct Current ◽  
Measurement System ◽  
Base Station ◽  
Space Charge Density ◽  
Electromagnetic Environment ◽  
High Voltage Direct Current ◽  
Ultra High Voltage

A space charge density wireless measurement system based on the idea of distributed measurement is proposed for collecting and monitoring the space charge density in an ultra-high-voltage direct-current (UHVDC) environment. The proposed system architecture is composed of a number of wireless nodes connected with space charge density sensors and a base station. The space charge density sensor based on atmospheric ion counter method is elaborated and developed, and the ARM microprocessor and Zigbee radio frequency module are applied. The wireless network communication quality and the relationship between energy consumption and transmission distance in the complicated electromagnetic environment is tested. Based on the experimental results, the proposed measurement system demonstrates that it can adapt to the complex electromagnetic environment under the UHVDC transmission lines and can accurately measure the space charge density.

scholarly journals Effect of Semiconductive Layer on Space Charge Accumulation in XLPE

2020 ◽  
Vol 204 ◽  
pp. 02004
Author(s):  
Bai Huan ◽  
Guangmao Li ◽  
Gang Du ◽  
Jun Xiong ◽  
Wenxiong Mo
Keyword(s):  
Charge Density ◽  
Space Charge ◽  
High Voltage ◽  
Characteristic Parameter ◽  
Space Charge Density ◽  
Conductive Layer ◽  
Charge Accumulation ◽  
Space Charge Distribution ◽  
Long Time ◽  
Different Thickness

Long time DC pressure on high voltage cables will lead to the accumulation of space charge in XLPE cables, thus endangering cable insulation. In order to study the effect of the thickness of semiconducting layer on the space charge in XLPE, the space charge in 10kV and 220kV XLPE sample with different thickness of semiconducting layer was measured and compared based on PEA method. Firstly, the samples were pressurized to the specified voltage, then kept this voltage for 30 minutes, then depressurized to 0, and lastly maintained for 90 minutes. The variation of space charge distribution during the pressurized stage was analyzed with the space charge density as the characteristic parameter. The results show that the space charge near the anode and cathode is accumulated by the semi-conductive coating during the period of maintaining pressure; the thicker the semi-conductive layer is, the more obvious the accumulation of space charge is; the longer the time of maintaining pressure, the more space charge accumulates.

High voltage breakdown (1.8 kV) of hydrogenated black diamond field effect transistor

2016 ◽  
Vol 109 (20) ◽  
pp. 203504 ◽  
Author(s):  
M. Syamsul ◽  
Y. Kitabayashi ◽  
D. Matsumura ◽  
T. Saito ◽  
Y. Shintani ◽  
...  
Keyword(s):  
High Voltage ◽  
Field Effect ◽  
Field Effect Transistor ◽  
High Voltage Breakdown ◽  
Effect Transistor ◽  
Voltage Breakdown

HIGH VOLTAGE BREAKDOWN STUDY

1968 ◽  
Author(s):  
W. R. Bell ◽  
M. J. Mulcahy ◽  
F. Y. Tse ◽  
A. Watson
Keyword(s):  
High Voltage ◽  
High Voltage Breakdown ◽  
Voltage Breakdown

HIGH VOLTAGE BREAKDOWN STUDY

1970 ◽  
Author(s):  
Michael J. Mulcahy ◽  
Philip C. Bolin ◽  
William R. Bell ◽  
Frank Y. Tse
Keyword(s):  
High Voltage ◽  
High Voltage Breakdown ◽  
Voltage Breakdown
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