Prony Algorithm for Noise Filteration in Partial Discharge Signals Captured by High Frequency Current Transducer

2020 ◽  
Author(s):  
Bhagya Swarnasinghe ◽  
Kavindya Dissanayake ◽  
Udathari Medagoda ◽  
Janaka Wijayakulasooriya ◽  
Sarath Kumara ◽  
...  
Keyword(s):  
High Frequency ◽  
Partial Discharge ◽  
High Frequency Current ◽  
Current Transducer ◽  
Prony Algorithm ◽  
Frequency Current

Parameters Identification and Modeling of High-Frequency Current Transducer for Partial Discharge Measurements

2013 ◽  
Vol 13 (3) ◽  
pp. 1081-1091 ◽  
Author(s):  
Muhammad Shafiq ◽  
Lauri Kutt ◽  
Matti Lehtonen ◽  
Tatu Nieminen ◽  
Murtaza Hashmi
Keyword(s):  
High Frequency ◽  
Partial Discharge ◽  
Parameters Identification ◽  
High Frequency Current ◽  
Current Transducer ◽  
Discharge Measurements ◽  
Frequency Current

scholarly journals Partial Discharge Analysis in High-Frequency Transformer Based on High-Frequency Current Transducer

Energies ◽  
2018 ◽  
Vol 11 (8) ◽  
pp. 1997 ◽  
Author(s):  
Jun Jiang ◽  
Mingxin Zhao ◽  
Chaohai Zhang ◽  
Min Chen ◽  
Haojun Liu ◽  
...  
Keyword(s):  
High Frequency ◽  
Partial Discharge ◽  
Phase Region ◽  
High Frequency Current ◽  
System A ◽  
Mode Decomposition ◽  
Current Transducer ◽  
Core Components ◽  
Set Up ◽  
Frequency Current

High-frequency transformers are the core components of power electronic transformers (PET), whose insulation is deeply threatened by high voltage (HV) and high frequency (HF). The partial discharge (PD) test is an effective method to assess an electrical insulation system. A PD measurement platform applying different frequencies was set up in this manuscript. PD signals were acquired with a high-frequency current transducer (HFCT). For improving the signal-to-noise (SNR) ratio of PD pulses, empirical mode decomposition (EMD) was used to increase the SNR by 4 dB. PD characteristic parameters such as partial discharge inception voltage (PDIV) and PD phase, number, and magnitude were all analyzed as frequency dependent. High frequency led to high PDIV and a smaller discharge phase region. PD number and magnitude were first up and then down as the frequency increased. As a result, a suitable frequency for evaluating the insulation of high-frequency transformers is proposed at 8 kHz according to this work.

scholarly journals KARAKTERISTIK SURFACE PARTIAL DISCHARGE DI SEKITAR ANTARMUKA PCB PADA PELAT-PELAT ELEKRODA PADA ISOLASI UDARA DAN MINYAK

2020 ◽  
Vol 6 (2) ◽  
pp. 65-73 ◽  
Author(s):  
Neris Peri Ardiansyah ◽  
Resa Pramudita
Keyword(s):  
High Frequency ◽  
Partial Discharge ◽  
Current Transformer ◽  
Surface Discharge ◽  
High Frequency Current ◽  
Inception Voltage ◽  
Frequency Current

Penggunaan peralatan tegangan tinggi pada konverter elektronik daya atau modul daya memiliki pengaruh terhadap sistem isolasi peralatan yang digunakan. Efek yang dihasilkan adalah pelepasan sebagian atau partial discharge (PD), dimana hal tersebut depengaruhi oleh bentuk tegangan, yang mana fenomena PD ini adalah awal mula terjadinya kegagalan dalam suatu peralatan. Pada penelitian ini dilakukan Pengukuran PD dengan mengacu pada Standar IEC 60270 yang menggunakan metode elektrik sebagai pengukuran yang digunakan untuk pengujian PD pada bahan PCB dengan alat ukur yang digunakan adalah RC detektor dan High Frequency Current Transformer (HFCT). Pengukuran PD dilakukan dengan membuat model elektroda yang digunakan pada pengujian untuk membuat sumber PD. Elektroda yang digunakan adalah model elektroda Homogen pelat-pelat. Pengujian pada PCB dilakukan untuk mengetahui karakteristik surface discharge pada disekitar antarmuka pelat-pelat elektroda. Parameter yang digunakan dalam pengukuran yaitu Partial Discharge Inception Voltage (PDIV), Partial Discharge Extinction Voltage (PDEV), Bentuk Gelombang PD, dan Pola Phasa PD.

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