Innovative Solutions for Partial Discharge Measurements

2021 ◽  
pp. 4-11
Author(s):  
Sergey A. GOLUBTSOV ◽  
◽  
Roberto CANDELA ◽  
Keyword(s):  
Diagnostic Method ◽  
Partial Discharge ◽  
Electrical Equipment ◽  
Partial Discharges ◽  
Condition Based Maintenance ◽  
Predictive Diagnostics ◽  
Innovative Solutions ◽  
Cable Systems ◽  
Cable Lines ◽  
Discharge Measurements

The article discusses systems developed using an innovative approach to measuring partial discharges, their advantages over traditional methods of monitoring cable lines and electrical equipment, as well as the principles of their operation. The design of the systems is based on a special broadband sensor-antenna which provides remote recording of both partial discharge pulses and the phase of alternating current flowing in the object of measurement without taking the equipment under test out of operation. Due to the wireless nature and system compact dimensions, partial discharge measurements can perform in previously inaccessible conditions, significantly expanding the capabilities of this diagnostic method. The partial discharge measurements are an up-to-date method for predictive diagnostics of cable systems and are necessary for the condition-based maintenance.

scholarly journals Partial discharges characteristics study in XLPE cable insulation with multiple defects

2021 ◽  
pp. 33-40
Author(s):  
I. V. Komarov ◽  
◽  
D. A. Polyakov ◽  
K. I. Nikitin ◽  
◽  
...  
Keyword(s):  
Electric Field ◽  
Field Intensity ◽  
Electric Field Intensity ◽  
Partial Discharge ◽  
Experimental Studies ◽  
Partial Discharges ◽  
Xlpe Cable ◽  
Power Intensity ◽  
Distributed Parameters ◽  
Discharge Measurements

The paper simulates the electric field intensity picture in the cable with one and several defects. Modeling has shown that the presence of several closely spaced defects does not lead to an increase in the electric field intensity in comparison with one defect. On the basis of experimental studies, an analysis of defects' number influence on various parameters of partial discharges (PD) is performed. Artificial defects are created in the area of the XLPE-insulated cable termination. The following parameters of PD are measured: the magnitude of the apparent charge, the power (intensity) of partial discharges, the phase-resolved partial discharge (PRPD) patterns, the shape of PD signals. The analysis shows an increase in the number of defects does not affect the characteristics of partial discharges, despite the fact the defects are located in different sections of the cable with distributed parameters. Thus, it can be difficult to quantify defects during cable partial discharge measurements.

scholarly journals STUDY AND PERFORMANCE OF PARTIAL DISCHARGE OF MODEL FOR DIFFERENT TYPE INSULATION MATERIALS WITH CAPACITANCE VALUE

2021 ◽  
Vol 8 (12) ◽  
pp. 323-327
Author(s):  
Neetu Baghelkar ◽  
Abhishek Dubey
Keyword(s):  
High Voltage ◽  
Transmission Lines ◽  
Partial Discharge ◽  
Electrical Equipment ◽  
Partial Discharges ◽  
Electrical System ◽  
Insulating Material ◽  
Different Types ◽  
And Performance ◽  
Short Time

The properties of the insulating material must be the best to avoid failure of electrical equipment. Partial discharges act as electrical sparks that occur within insulation and the high-voltage electrical system. The different types of voltage and current pulses are produced, which last for a very short time. Partial discharge is taking place in high voltage power equipment such as cables, transmission lines and transformers, etc.

scholarly journals To the Evaluation of the Insulation State Based on the Analysis of Partial Discharges

2021 ◽  
Vol 2096 (1) ◽  
pp. 012192
Author(s):  
S Yu Tetiora ◽  
N V Silin ◽  
N N Petrunko
Keyword(s):  
Deterministic Model ◽  
Partial Discharge ◽  
Electrical Equipment ◽  
Diagnostic Value ◽  
Point Of View ◽  
Partial Discharges ◽  
Diagnostic Methods ◽  
Application Area ◽  
New Approach ◽  
Discharge Modeling

Abstract The existing partial discharge models, their diagnostic value, and application area are analyzed in the article. The models are considered from the point of view of their improvement or the possibility of creating new diagnostic methods for electrical equipment based on the characteristics of partial discharges. As an example of the implementation of a new approach to partial discharge modeling, a quasi-deterministic model is considered, which makes it possible to obtain information on the real number of cavities in the insulation of high-voltage equipment.

scholarly journals Partial Discharge Measurements in HV Rotating Machines in Dependence on Pressure of Coolant

10.14311/298 ◽  
2002 ◽  
Vol 42 (1) ◽  
Author(s):  
I. Kršňák ◽  
I. Kolcunová
Keyword(s):  
Theoretical Analysis ◽  
High Voltage ◽  
Partial Discharge ◽  
Partial Discharges ◽  
Rotating Machines ◽  
Theoretical Assumptions ◽  
Discharge Measurements

The influence of the pressure of the coolant used in high voltage rotating machines on partial discharges occurring in stator insulation is discussed in this paper. The first part deals with a theoretical analysis of the topic. The second part deals with the results obtained on a real generator in industrial conditions. Finally, theoretical assumptions and obtained results are compared.

Sign in / Sign up

Export Citation Format

Share Document