Research on Discharge Characteristics of Potential Transfer for Live Working on UHVDC Transmission Line

2018 ◽  
Author(s):  
Wen Li ◽  
Zhiqi Li ◽  
Chenmeng Zhou ◽  
Zijun Ren ◽  
Zhigang Wang ◽  
...  
Keyword(s):  
Transmission Line ◽  
Discharge Characteristics

scholarly journals Modeling of Positive Switching Impulse Discharge of UHV Transmission Line Air Gaps

2018 ◽  
Vol 8 (12) ◽  
pp. 2594 ◽  
Author(s):  
Jiachen Gao ◽  
Linong Wang ◽  
Qiushi Zhang ◽  
Bin Song
Keyword(s):  
Transmission Line ◽  
Breakdown Voltage ◽  
Transmission Lines ◽  
Test Results ◽  
Discharge Characteristics ◽  
Air Gaps ◽  
Impulse Discharge ◽  
Discharge Model ◽  
Important Basis ◽  
Uhv Transmission Lines

Positive switching impulse discharge characteristics are an important basis for the external insulation design of transmission line towers. At present, the characteristics are obtained mainly by real tower discharge tests. Since the existing research on the discharge model is not perfect, test designs are not reasonable, which results in high costs. The influence of line height and tower width on the discharge characteristics of Ultra High Voltage (UHV) transmission lines air gaps is studied in this paper. The results show that the line height had little influence on the breakdown voltage of air gaps in UHV transmission lines. A tower-width discharge model was obtained by fitting the breakdown voltage of air gaps with different gap lengths and tower widths. By analyzing the gap characteristic factors of different transmission lines, a discharge model of different tower air gaps in UHV transmission lines was presented. The breakdown voltage calculated by the models was in good agreement with the test results, and the errors were not more than 5%.

Switching impulse discharge characteristics of UHV transmission line air gaps

2019 ◽  
Vol 14 (5) ◽  
pp. 735-741 ◽  
Author(s):  
Jiachen Gao ◽  
Linong Wang ◽  
Qiushi Zhang ◽  
Bin Song ◽  
Kai Liu ◽  
...  
Keyword(s):  
Transmission Line ◽  
Discharge Characteristics ◽  
Air Gaps ◽  
Impulse Discharge

Composite right/left-handed transmission line with array of thermocouples for generating terahertz radiation

2020 ◽  
Vol 92 (2) ◽  
pp. 20502
Author(s):  
Behrokh Beiranvand ◽  
Alexander S. Sobolev ◽  
Anton V. Kudryashov
Keyword(s):  
Transmission Line ◽  
Terahertz Radiation ◽  
Transmission Lines ◽  
Software Package ◽  
Optical Pulses ◽  
Capacitively Coupled ◽  
Voltage Difference ◽  
Left Handed ◽  
Microwave Transmission ◽  
Commercial Software Package

We present a new concept of the thermoelectric structure that generates microwave and terahertz signals when illuminated by femtosecond optical pulses. The structure consists of a series array of capacitively coupled thermocouples. The array acts as a hybrid type microwave transmission line with anomalous dispersion and phase velocity higher than the velocity of light. This allows for adding up the responces from all the thermocouples in phase. The array is easily integrable with microstrip transmission lines. Dispersion curves obtained from both the lumped network scheme and numerical simulations are presented. The connection of the thermocouples is a composite right/left-handed transmission line, which can receive terahertz radiation from the transmission line ports. The radiation of the photon to the surface of the thermocouple structure causes a voltage difference with the bandwidth of terahertz. We examined a lossy composite right/left-handed transmission line to extract the circuit elements. The calculated properties of the design are extracted by employing commercial software package CST STUDIO SUITE.

Choke-Supported Tri-plate Transmission Line Filter for Loss Reduce Technique

2013 ◽  
Vol 133 (5) ◽  
pp. 957-961
Author(s):  
Yasuyoshi Okita ◽  
Futoshi Kuroki ◽  
Yuki Kawahara
Keyword(s):  
Transmission Line
Sign in / Sign up

Export Citation Format

Share Document