scholarly journals Spiral Antenna Design and Analysis As a Tool to Measure Partial Discharge in High Voltage Equipment

2021 ◽  
Vol 328 ◽  
pp. 02006
Author(s):  
Deni Tri Laksono ◽  
Dedi Tri Laksono ◽  
Miftachul Ulum
Keyword(s):  
High Voltage ◽  
Return Loss ◽  
Partial Discharge ◽  
Electrical Equipment ◽  
Antenna Design ◽  
Spiral Antenna ◽  
Literature Study ◽  
Measurement Results

The high-voltage equipment often experiences disturbances caused by the age of the equipment, installation errors, partial discharge disturbances. Of these kinds of disturbances, partial discharge is one of the most common disturbances in high-voltage equipment which has a percentage level of 80% due to partial disturbance. In this study, a research related to electrical equipment that can detect partial discharge disturbances in these high-voltage equipment was done. The equipment is a spiral antenna, where the spiral antenna has several advantages in detecting partial discharge. In making the first partial discharge, a literature study will be carried out first, after that designing a spiral antenna using CST 2018 software to get the Return loss and VSWR parameters as desired, namely Return Loss less than -10 and VSWR less than 2. From the results of this study Spiral antenna is measured using VNA, the measurement results show the spiral antenna is in accordance with the parameters that have been determined, namely the return loss value = -30.8 and the VSWR value = between 1 to 1.5.

scholarly journals A Rectangular Planar Spiral Antenna for GIS Partial Discharge Detection

2014 ◽  
Vol 2014 ◽  
pp. 1-7 ◽  
Author(s):  
Xiaoxing Zhang ◽  
Yefei Han ◽  
Wei Li ◽  
Xuetao Duan
Keyword(s):  
Electromagnetic Interference ◽  
Electromagnetic Waves ◽  
Partial Discharge ◽  
Low Frequency ◽  
Horn Antenna ◽  
Spiral Antenna ◽  
Cavity Structure ◽  
Measurement Results ◽  
Defect Simulation ◽  
Tem Horn

A rectangular planar spiral antenna sensor was designed for detecting the partial discharge in gas insulation substations (GIS). It can expediently receive electromagnetic waves leaked from basin-type insulators and can effectively suppress low frequency electromagnetic interference from the surrounding environment. Certain effective techniques such as rectangular spiral structure, bow-tie loading, and back cavity structure optimization during the antenna design process can miniaturize antenna size and optimize voltage standing wave ratio (VSWR) characteristics. Model calculation and experimental data measured in the laboratory show that the antenna possesses a good radiating performance and a multiband property when working in the ultrahigh frequency (UHF) band. A comparative study between characteristics of the designed antenna and the existing quasi-TEM horn antenna was made. Based on the GIS defect simulation equipment in the laboratory, partial discharge signals were detected by the designed antenna, the available quasi-TEM horn antenna, and the microstrip patch antenna, and the measurement results were compared.

Design of Four-Arm Equiangular Spiral Antenna in Mine Communication

2014 ◽  
Vol 678 ◽  
pp. 447-451
Author(s):  
Xiao Ying Ran ◽  
Zhen Yu
Keyword(s):  
Return Loss ◽  
Input Voltage ◽  
Propagation Characteristics ◽  
Frequency Range ◽  
Spiral Antenna ◽  
Antenna Size ◽  
Measurement Results ◽  
Equiangular Spiral ◽  
Antenna Input ◽  
Mine Tunnels

According to the propagation characteristics of radio wave in mine tunnels, in order to realize the communication and detection in underground tunnels, a four-arm equiangular spiral antenna is presented in the paper, which based on the principle and structure of traditional two-arm spiral antenna, and reduces the antenna size. CST software is used to construct and simulate the antenna model. The antenna is tested by the PNA3621 vector network meter. Simulation and measurement results show that the antenna has good performance in 652MHz-3.012GHz frequency range, antenna input voltage standing-wave ratio VSWR and return loss RL are ideal, and antenna pattern is better, which agrees well with the simulated results.

Typical PD Type of GIS, Transformer, Switchgear and other Substation Equipment

2014 ◽  
Vol 1044-1045 ◽  
pp. 893-897
Author(s):  
Wei Dong Zhang ◽  
Qing Liu ◽  
Nan He ◽  
Jian Wen Wang
Keyword(s):  
High Voltage ◽  
Partial Discharge ◽  
Free Particle ◽  
Electrical Equipment ◽  
Surface Discharge ◽  
Spike Discharge ◽  
Insulation Degradation ◽  
Substation Equipment ◽  
Insulation Breakdown

Most high-voltage faults are caused by the insulation degradation of electrical equipment, while partial discharge is the main reason of insulation breakdown of electrical equipment. This paper introduces partial discharge types of GIS, transformer, switchgear and other substation equipment based on the study of partial discharge types and summarizes five types of partial discharge of substation equipment, namely: spike discharge, free particle discharge, insulation defects discharge, surface discharge and suspended click discharge.

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 Antipodal Vivaldi Antenna to Detect UHF Signals That Leaked Out of the Joint of a Transformer

2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Jian Zhang ◽  
Xiaoxing Zhang ◽  
Song Xiao
Keyword(s):  
Electromagnetic Interference ◽  
Return Loss ◽  
Partial Discharge ◽  
Structural Features ◽  
Ultrahigh Frequency ◽  
Spiral Antenna ◽  
Radiation Characteristics ◽  
Linear Gradient ◽  
Vivaldi Antenna ◽  
Plane Spiral

In recent years, extensive research has been conducted on the ultrahigh-frequency (UHF) method. Considering that acquiring a partial discharge UHF signal is the first step in a series of tasks, such as fault diagnosis and defect location, the UHF sensor plays an important role in the UHF method. An antipodal Vivaldi antenna installed at a transformer’s joint is designed in this study according to the structural features of 750 kV transformers in China. Several effective structures, such as linear gradient microstrip and slot edge, are employed to improve the return loss and radiation characteristics. A metal box is designed after analyzing the influence of the metal around the antenna. The metal box can effectively shield against electromagnetic interference and does not deteriorate the performance of the antenna significantly. Experimental data show that this antenna is much more sensitive than the rectangular plane spiral antenna. The proposed antipodal Vivaldi antenna is suitable for detecting partial discharge in large transformers.

Feature Extraction Based on the Multiple Harmonic Analysis of 2-Dimensional Pattern of Partial Discharge

2013 ◽  
Vol 303-306 ◽  
pp. 478-481
Author(s):  
Yu Long Gong ◽  
Jin Xi Guo ◽  
Hong Fu Guo
Keyword(s):  
Harmonic Analysis ◽  
High Voltage ◽  
High Frequency ◽  
Short Circuit ◽  
Partial Discharge ◽  
Characteristic Parameter ◽  
Electrical Equipment ◽  
Normal Operation ◽  
Harmonic Components ◽  
Insulation Breakdown

Partial discharge will cause deterioration of insulation of high-voltage electrical equipment, resulting in insulation breakdown and short circuit accident. In order to ensure the normal operation of the high-voltage equipment, it is necessary to detect partial discharge online. By using Ultra High Frequency (UHF) defection method, statistical 2-dimensional (2D) patterns of partial discharge are obtained. Extracting the envelopes of the 2D patterns, we do the harmonic analysis for patterns’ envelopes, and the harmonic components are used as a characteristic parameter for defect type’s recognition. The results show that the harmonic components can be used as characteristic parameter for defect types’ recognition. This method has the characteristics of strong real-time and simple operation.

scholarly journals Efektivitas Penggunaan Laboratorium High Voltage di Politeknik Ilmu Pelayaran (PIP) Semarang

2021 ◽  
Vol 2 (1) ◽  
pp. 86-90
Author(s):  
Andy Wahyu Hermanto ◽  
M. Imroni Mubin ◽  
Achmad Ridwan
Keyword(s):  
Data Analysis ◽  
High Voltage ◽  
Research Method ◽  
Qualitative Method ◽  
Secondary Data ◽  
Electrical Equipment ◽  
Literature Study ◽  
Study Program ◽  
School Year ◽  
Engineering Study

Semarang Merchant Marine Polytechnic (PIP Semarang) is a university that provides vocational education in the field of shipping. The high voltage laboratory is a means of supporting the practice of electrical equipment on board a ship based on a high voltage of 6.6 Kv. Based on the results of the researchers' preliminary observations and observations, it is known that the use of the high voltage laboratory during the 2019 school year is very minimal, namely 25.5 hours for 1 year. The purpose of this study is to see the use of the high voltage laboratory at PIP Semarang, what security is used in the use of the high voltage laboratory at PIP Semarang, and the efforts made to overcome the problems used in the use of the high voltage laboratory at PIP Semarang. The research method used in this research is a qualitative method. Data obtained from the results of distributing questionnaires to cadets. In addition, interviews were also conducted with Engineering Study Program lecturers. Secondary data obtained from literature study, observation and documentation. Based on the results of data analysis, it can be denied that the use of the high voltage laboratory at PIP Semarang is still not optimal and effective. This can be proven by the results of the questionnaire recapitulation showing that the use of the high voltage laboratory is 32% very effective, 4% effective, 60% less effective, and 4% ineffective.

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