Simulation of the partial discharge phenomena in defective overhead line conductors through an empirical approach

1998 ◽  
Author(s):  
R.K. Aggarwal
Keyword(s):  
Partial Discharge ◽  
Empirical Approach ◽  
Overhead Line

scholarly journals Application of Open-air Capacitive Sensors for Voltage Monitoring near Terminations in HV and EHV Insulated Connections

2019 ◽  
pp. 70-75
Author(s):  
P.A.A.F Wouters ◽  
F Barakou ◽  
E.F. Steennis
Keyword(s):  
Numerical Simulation ◽  
Partial Discharge ◽  
Circuit Breaker ◽  
Time Derivative ◽  
Cross Coupling ◽  
Sensor Response ◽  
Capacitive Sensors ◽  
Overhead Line ◽  
Discharge Activity ◽  
Signal Time

Contactless capacitive sensors are applied to monitor(over)voltages near the overhead line terminations of asubstation or at cable to line transitions. The sensor response isthe signal time derivative when loaded with a resistiveimpedance and the waveform is restored by integration. As partof this differentiating/integrating (D/I) measuring concept, theuse of open-air sensors results in excellent EMC characteristicsbut the inherent cross-coupling to other phases has to be dealtwith. Three applications are presented: 1) For a 150 kV cabletermination the partial discharge activity needs to be related tomomentary phase voltages; 2) Measured slow front overvoltageat a 380 kV cable termination from line energizationare compared with predictions from numerical simulation; 3)The perspectives of employing the D/I method for (very) fastfront overvoltages near a 380 kV circuit breaker are examined.

Replicability and other features of a high-quality science: Toward a balanced and empirical approach.

2017 ◽  
Vol 113 (2) ◽  
pp. 244-253 ◽  
Author(s):  
Eli J. Finkel ◽  
Paul W. Eastwick ◽  
Harry T. Reis
Keyword(s):  
Empirical Approach ◽  
High Quality

Empirical analysis of market boundaries in telecommunications

2019 ◽  
pp. 90-111 ◽  
Author(s):  
Natalia S. Pavlova ◽  
Andrey Е. Shastitko
Keyword(s):  
Law Enforcement ◽  
Empirical Analysis ◽  
Mass Distribution ◽  
End Users ◽  
Economic Modeling ◽  
Empirical Approach ◽  
Antitrust Law ◽  
Technological Changes ◽  
Loss Analysis ◽  
E Mail

The article deals with the problem of determining market boundaries for antitrust law enforcement in the field of telecommunications. An empirical approach has been proposed for determining the product boundaries of the market in the area of mass distribution of messages, taking into account the comparative characteristics of the types and methods of notification (informing) of end users; the possibilities of switching from one way of informing to another, including the evolution of such opportunities under the influence of technological changes; switching between different notification methods. Based on the use of surveys of customers of sending SMS messages, it is shown that the product boundaries should include not only sending messages via SMS, but also e-mail, instant messengers, Push notifications and voice information. The paper illustrates the possibilities of applying the method of critical loss analysis to determining the boundaries of markets based on a mixture of surveys and economic modeling.

Noise Discrimination Method for Partial Discharge Current Focused on Damped Oscillation Waveform

2018 ◽  
Vol 138 (2) ◽  
pp. 64-70
Author(s):  
Hirotaka Torii ◽  
Yuji Hayase ◽  
Keisuke Yamashiro ◽  
Satoshi Matsumoto
Keyword(s):  
Discharge Current ◽  
Partial Discharge ◽  
Damped Oscillation ◽  
Discrimination Method

Partial Discharge Activity of Inter-turn Insulation under Different Parameters of Square Wave Voltage

2009 ◽  
Vol 129 (12) ◽  
pp. 922-930 ◽  
Author(s):  
Kai Zhou ◽  
Guangning Wu ◽  
Xiaoxia Guo ◽  
Liren Zhou ◽  
Tao Zhang
Keyword(s):  
Partial Discharge ◽  
Square Wave ◽  
Discharge Activity ◽  
Turn Insulation

Comparison of Partial Discharge Resistance of Several Nanocomposites

2011 ◽  
Vol 131 (6) ◽  
pp. 414-420 ◽  
Author(s):  
Tomonori Iizuka ◽  
Toshikatsu Tanaka
Keyword(s):  
Partial Discharge
Sign in / Sign up

Export Citation Format

Share Document