Impulse-strength measurements on compressed-gas insulation for extra-high-voltage power cables

1965 ◽  
Vol 112 (1) ◽  
pp. 103 ◽  
Author(s):  
D.J. Skipper ◽  
P.I. McNeall
Keyword(s):  
High Voltage ◽  
Power Cables ◽  
Compressed Gas ◽  
Gas Insulation ◽  
Extra High Voltage

Testing and Diagnosis of Extra High Voltage Power Cables Using Damped AC Voltages Combined with Distributed Partial Discharge Measurement

2014 ◽  
Vol 1070-1072 ◽  
pp. 1039-1043
Author(s):  
Biao Yan ◽  
Li Zhou ◽  
Jie Chen ◽  
Feng Bo Tao ◽  
Jian Zhang
Keyword(s):  
High Voltage ◽  
Output Voltage ◽  
Partial Discharge ◽  
Assessment Method ◽  
State Assessment ◽  
Signal Acquisition ◽  
Power Cables ◽  
Underground Cable ◽  
Distributed Measurement ◽  
Extra High Voltage

State assessment method of cables with extruded insulation and their accessories, DAC withstand test combined with a diagnostic test (such as PD measurement) has two shortcomings, the output voltage is not high enough for EHV cables, it cannot detect and locate PD effectively when defects are far away from signal acquisition point. This paper focus on DAC voltages up to 250kV and a kind of distributed measurement of PD. Defects existing in arbitrary of tested cable can be accurately measured in theory by installing sensor at intervals along the tested cable. This method has been validated on a long extra high voltage cross-linked polyethylene (XLPE) insulated underground cable circuit and the filed PD test has been completed successfully.

NEW APPROACHES TO IMPROVE EDUCATIONAL AND RESEARCH CAD OF HIGH AND EXTRA-HIGH VOLTAGE OVERHEAD TRANSMISSIONS LINES

2018 ◽  
Author(s):  
Валентин Горин ◽  
Valentin Gorin ◽  
Николай Давидсон ◽  
Nikolay Davidson ◽  
Р. Пуриши ◽  
...  
Keyword(s):  
High Voltage ◽  
New Approaches ◽  
Extra High Voltage

Najczęściej występujące uszkodzenia fundamentów słupów linii elektroenergetycznych najwyższych napięć i sposoby ich napraw

2020 ◽  
Vol 29 (4) ◽  
pp. 461-473
Author(s):  
Joanna Witkowska-Dobrev ◽  
Anna Brzezińska ◽  
Olga Szlachetka
Keyword(s):  
High Voltage ◽  
Surface Defects ◽  
Power Line ◽  
Small Surface ◽  
On Site Inspection ◽  
Degree Of Damage ◽  
Extra High Voltage

The paper consists of the discussion of issues related to the durability of foundations of extra high voltage (EHV) power line poles and possibilities of their renovation. The research part is the diagnostics of selected foundations of the EHV line poles (400 kV) Wielopole–Noszowice. During the on-site inspection, it was found that there are chipping and small surface defects, and in some cases losses of the reinforcement cover without visible pits. Based on the degree of damage, the scope of non-structural repairs and anti-corrosive protection was determined, presenting the next stages of their implementation.

Sign in / Sign up

Export Citation Format

Share Document