Partial Discharge Features for Power Electronic Transformers Under High-Frequency Pulse Voltage

2021 ◽  
Vol 49 (2) ◽  
pp. 845-853
Author(s):  
Jun Jiang ◽  
Bendong Zhang ◽  
Zhi Li ◽  
Prem Ranjan ◽  
Jiawei Chen ◽  
...  
Keyword(s):  
High Frequency ◽  
Partial Discharge ◽  
Pulse Voltage ◽  
Power Electronic ◽  
Frequency Pulse

signals, namely the measurement of the partial dis-charge pulse current. The Roche coil works in mag-netic coupling, and the detecting circuit and the high-voltage circuit has no direct contact, so it is very suitable for the partial discharge site inspection in the high-voltage switchgear. 3 APPLICATION OF HIGH-FREQUENCY PULSE CURRENT SENSOR IN THE WAIST STATION FOR 35 KV SWITCH CABINET A 220 KV waist station is located on a hill, which is far from about 2 km to the north of Yang street , 4 DATA DETECTION AND ANALYSIS OF Lufeng town, Lufeng country of Chuxiong city , alti-SWITCHGEAR HIGH FREQUENCY FOR tude 1923 km, which covers an area of 22876 m PARTIAL DISCHARGE and put into production on December 25, 2009. It is one of the most important substation of Chuxiong During the 2-month testing for the Chuxiong waist Lufeng area. The main power source is supplied by station , we selected the data from April 23 to May 220 KV and 500 KV peace waist I changed back 25 in 2014 for effective analysis, and found that the line, 220 kV and waist II loop power. current data of the eight high-frequency pulse cur-rent sensor is normal, so we selected three sensor

2015 ◽  
pp. 71-73
Keyword(s):  
High Voltage ◽  
High Frequency ◽  
Direct Contact ◽  
Pulse Current ◽  
Partial Discharge ◽  
Current Data ◽  
Data Detection ◽  
The North ◽  
Effective Analysis ◽  
Frequency Pulse

scholarly journals Fractal Hilbert sensor to detect partial discharge on transformer

2020 ◽  
Vol 1 (2) ◽  
pp. 94
Author(s):  
Herman Halomoan Sinaga
Keyword(s):  
High Frequency ◽  
Partial Discharge ◽  
Single Layer ◽  
Defect Model ◽  
Tem Cell ◽  
Sensor Sensitivity ◽  
Closed Type ◽  
Defect Source ◽  
Transformer Insulation ◽  
Frequency Pulse

The design of fractal Hilbert sensor is presented in this paper. The sensor is intended to detect partial discharge (PD) in transformer insulation. The fractal Hilbert sensor designed using 4 order fractal and etching on single layer PCB board. The Hilbert fractal type is chosen as this type of sensor can be built on smaller area compare to other types. The sensor overall dimension is limited to 5x5 cm as it is proposed to be use to detect the PD presence in transformer. The sensor sensitivity is tested using a closed type TEM cell. After the sensitivity of the sensor is tested the sensor then applied to detect the PD signals emitted by void PD defect model. The results show the sensor has sensitivity as high as 10 dB. The sensor also has capability to detect the PD signals generated by the PD defect source. The waveforms captured by the sensor show the sensors can capture high frequency pulse generated by the PD source.  Keywords: Partial Discharge (PD), Fractal Hilbert Sensor UHF, Sensor Sensitivity

HEAT ELECTRICAL SIMULATION OF HIGH FREQUENCY PULSE VOLTAGE CONVERTERS

2018 ◽  
Author(s):  
Леонид Потапов ◽  
Leonid Potapov ◽  
Алексей Школин ◽  
Aleksey Shkolin ◽  
Дмитрий Гадашев ◽  
...  
Keyword(s):  
High Frequency ◽  
Pulse Voltage ◽  
Electrical Simulation ◽  
Frequency Pulse

scholarly journals Case Analysis on Partial Discharge Signal of XLPE Cable T-Joint by Using High-Frequency Pulse Current Method

2017 ◽  
Vol 141 ◽  
pp. 545-550 ◽  
Author(s):  
Zhang Hao ◽  
Duan Yubing ◽  
Wang Bin ◽  
Liu Hui ◽  
Lin Ying ◽  
...  
Keyword(s):  
High Frequency ◽  
Pulse Current ◽  
Partial Discharge ◽  
Case Analysis ◽  
Current Method ◽  
Xlpe Cable ◽  
Frequency Pulse

scholarly journals Dual Quasi-Resonant Controller Position Observer Based on High Frequency Pulse Voltage Injection Method

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 213266-213276
Author(s):  
Yi Mao ◽  
Yi Du ◽  
Zhuofan He ◽  
Li Quan ◽  
Xiaoyong Zhu ◽  
...  
Keyword(s):  
High Frequency ◽  
Pulse Voltage ◽  
Injection Method ◽  
Resonant Controller ◽  
Position Observer ◽  
Frequency Pulse

ANALYSIS OF METHODS FOR DETERMINING AND APPLYING HEAT PARAMETERS OF HIGH FREQUENCY PULSE VOLTAGE CONVERTERS

2019 ◽  
Author(s):  
Leonid Potapov ◽  
Aleksey Shkolin
Keyword(s):  
High Frequency ◽  
Reference Data ◽  
Supply Voltage ◽  
Thermal Characteristic ◽  
Pulse Voltage ◽  
Electrical Parameters ◽  
Cooling Conditions ◽  
Thermoelectric Model ◽  
Transient Thermal ◽  
Frequency Pulse

It is shown that the thermal resistance of the junction-case is determined through a partial heat flux and is some characteristic of the crystal fastening in the case of high-frequency pulse voltage converters. It is practically impossible to measure this resistance in mass production because of the high complexity and low accuracy, although this resistance is indicated in the reference data sheet for each IC. To exclude the possibility of hidden defects that are not detected during the control of electrical parameters, it is proposed to use one hundred percent control of thermal parameters by way of comparison with a standard. The transient thermal characteristic can be determined experimentally for a specific IC and specific cooling conditions. After approximation by its exponents, it is possible to construct a thermoelectric model and use it to study the change in the temperature of the IC chip with changing various parameters (supply voltage, load power, etc.).

Sign in / Sign up

Export Citation Format

Share Document