Sinusoidal-wave applied voltage frequency dependence of partial discharge characteristics with needle-plane electrode system

2017 ◽  
Author(s):  
Takafumi Mashimo ◽  
Masafumi Yashima ◽  
Tatsuki Okamoto
Keyword(s):  
Frequency Dependence ◽  
Applied Voltage ◽  
Partial Discharge ◽  
Electrode System ◽  
Sinusoidal Wave ◽  
Discharge Characteristics ◽  
Plane Electrode ◽  
Voltage Frequency

Dependence of Partial Discharge Characteristics on Applied Voltage Frequency with IEC(b) Electrode System

2011 ◽  
Vol 131 (10) ◽  
pp. 866-871 ◽  
Author(s):  
Takashi Kuraishi ◽  
Tatsuki Okamoto ◽  
Toshihiro Takahashi ◽  
Satoru Miyazaki ◽  
Hiroshi Suzuki
Keyword(s):  
Applied Voltage ◽  
Partial Discharge ◽  
Electrode System ◽  
Discharge Characteristics ◽  
Voltage Frequency

scholarly journals Computer Measurement of Partial Discharge Characteristics and Their Frequency Dependence

1995 ◽  
Vol 115 (10) ◽  
pp. 1215-1220 ◽  
Author(s):  
Masayuki Hikita ◽  
Atsushi Suzuki ◽  
Tatsuro Kato ◽  
Naoki Hayakawa ◽  
Hitoshi Okubo
Keyword(s):  
Frequency Dependence ◽  
Partial Discharge ◽  
Discharge Characteristics ◽  
Computer Measurement

PD Characteristics in Transformer Oil under AC Condition

2014 ◽  
Vol 492 ◽  
pp. 186-189
Author(s):  
Ji Chong Liang ◽  
Tian Zheng Wang ◽  
Kang Ning Wang ◽  
Jun Hao Li
Keyword(s):  
Electric Field ◽  
High Voltage ◽  
Applied Voltage ◽  
Partial Discharge ◽  
Electrode System ◽  
Transformer Oil ◽  
Pulse Burst ◽  
Transformer Oils ◽  
Pattern Display ◽  
Insulation Condition

Partial discharge (PD) detection is a technique widely used for high voltage equipment insulation condition assessment. The metal protrusion is a situation that often appear in transformer. Metal protrusion will cause the electric field concentration and lead to partial discharge. In this paper, PD characteristics in transformer oils are examined under AC conditions, using a needle-to-plane electrode system. The PD activity in transformer oil is confirmed as appearing in pulse burst form and the PD number and amplitude will increase with the applied voltage increase. The PRPD pattern display behavior typical of corona PD in oil.

The Partial Discharge Characteristics Study of the Insulated Copper Busbar Joint Metal Metal Protrusion Defect

2012 ◽  
Vol 614-615 ◽  
pp. 1126-1130 ◽  
Author(s):  
Xiao Meng Hu ◽  
Li Xue Liang ◽  
Zhi Rong Tan ◽  
Liang Zhang ◽  
Jun Hao Li ◽  
...  
Keyword(s):  
Applied Voltage ◽  
Partial Discharge ◽  
Field Testing ◽  
Electrical Equipment ◽  
Half Cycle ◽  
Laboratory Studies ◽  
Discharge Characteristics ◽  
Polarity Effect ◽  
Metal Metal ◽  
New Type

Insulated copper busbar is widely used as a new type of electrical equipment in recent years. The joint of the busbar is linked with soft connection copper belt in the field. So, it is very easily lead to the metal protrusion defect at the joint. The metal protrusion detect at joint with entity insulated copper busbar is builded in lab. The partial discharge characteristics of this defect is studied under different applied voltage and the results show that such defect has apparent polarity effect, the discharge always appears in the negative half cycle. The discharge amplitude will not be increased very much with increasing of applied voltage but the discharge frequency will be increased significantly. The results provide the basis of laboratory studies for the field testing of insulated copper busbar.

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