Development of real-time system for simultaneous observation of visual discharges and leakage current on contaminated DC insulators

Isaka, Katsuo; Yokoi, Yoshihide; Naito, K.; Matsuoka, Ryosuke; Ito, Susumu; Sakanishi, Kenji; Fujii, Osamu

doi:10.1109/14.64502

Cited by 21 publications

(5 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It was observed from literature that PD and LC values are effected by changing the configuration and testing conditions of nano composites. To understand the effective change in these values PD and LC can be correlated [26]. PD may exist in the region of strong electric field that ionizes the air and make it conductive.…”

Section: Efforts Done In Previous Studiesmentioning

confidence: 99%

Effect of nano filler concentration on leakage current and partial discharge properties of zepoxy nano composites

et al. 2019

View full text Add to dashboard Cite

Electrical insulation materials play a key role in stable and uninterrupted operation of electrical power system. Researchers working in the field of electrical insulation have turned their focus to nano composite insulation materials for better performance and reliability. A typical nano composite insulation material is a combination of nano particles and base materials. Since last 25 years silicon rubber and epoxy are two widely used electrical insulation materials for outdoor and indoor applications respectively. To further enhance the electrical insulation performance of these materials addition of nano particles has proven to be of practical value. This study presents an investigation on zepoxy (a military grade epoxy) incorporated with three different nano particles at varying percentages. The main aim was to find the nature of relationship between leakage current (LC) and partial discharge (PD). In addition to that optimum composition which results in lowest values of PD and LC was also investigated for each of three nano composites. The results of this study help to understand the interdependence between LC and PD for indoor electrical insulation based on zepoxy. LC and PD play a vital role in condition assessment of any insulation material.

show abstract

Section: Efforts Done In Previous Studiesmentioning

confidence: 99%

Effect of nano filler concentration on leakage current and partial discharge properties of zepoxy nano composites

et al. 2019

View full text Add to dashboard Cite

show abstract

“…But in references [7][8] behavior of insulators is studied under conditions that their surface pollution is not uniform and electrical behavior of insulators and their critical parameters are modeled under such conditions. Besides above mentioned cases, there are a variety of methods in which detection of insulators conditions and prediction of flashover are suggested [9][10][11][12][13][14][15][16][17]. In most of these methods, study on leakage current of insulator and extraction of detection criterion of insulators' critical conditions out of their behavior changes are considered.…”

Section: Introductionmentioning

confidence: 99%

Automatic system for detection critical conditions in overhead lines distribution insulators based on leakage current analysis

Faramarzi

Tabibzadeh

Mohseni

et al. 2016

2016 IEEE/IAS 52nd Industrial and Commercial Power Systems Technical Conference (I&CPS)

View full text Add to dashboard Cite

In this paper, a new automatic system has been proposed for critical conditions diagnosis of distribution insulators. In this regard, a variety of experiments have been conducted on different types of insulators under different environmental conditions. Leakage current harmonics on these experiments have been analyzed. Fast Fourier Transform (FFT) applied on leakage current waveforms and results show a strong correlation between third to fifth harmonics amplitude ratio regarding to insulators conditions. Therefore, third to fifth harmonics ratio of leakage current (R3/5) has been proposed as an indicator to diagnosis critical conditions in distribution insulators. Results demonstrate if value of index R3/5 becomes more than unit, it will be critical condition for insulator and high probability of flashover occurrence. Hence, an automatic system designed for critical conditions detection and flashover prediction using the index R3/5•

show abstract

“…All of the above studies adopted the overall measurement method to study the wetting characteristics of a polluted layer in insulators based on leakage current or surface conductivity. However, the leakage-current-based method requires thousands of volts of test voltage [14][15][16]. In addition, the thermal effect of the leakage current may lead to uneven wetting of the polluted layer of the insulators and even to the phenomenon of a partial dry zone.…”

Section: Introductionmentioning

confidence: 99%

Effects of structure and material of polluted insulators on the wetting characteristics

Yang

Zhang

et al. 2019

IET Science, Measurement & Technology

View full text Add to dashboard Cite

Development of real-time system for simultaneous observation of visual discharges and leakage current on contaminated DC insulators

Cited by 21 publications

References 6 publications

Effect of nano filler concentration on leakage current and partial discharge properties of zepoxy nano composites

Effect of nano filler concentration on leakage current and partial discharge properties of zepoxy nano composites

Automatic system for detection critical conditions in overhead lines distribution insulators based on leakage current analysis

Effects of structure and material of polluted insulators on the wetting characteristics

Contact Info

Product

Resources

About