Research Status of Insulation Detection Technology for Less Oil-Immersed Power Equipment

2020 ◽  
Author(s):  
Guozhi Zhang ◽  
Xiaoxing Zhang
Keyword(s):  
Power Equipment ◽  
Research Status ◽  
Detection Technology

scholarly journals Research on Pressure-based Detection Technology for Partial Overheat Insulation Defect of Oil-less Power Equipment

2021 ◽  
Vol 632 ◽  
pp. 042009
Author(s):  
Qunying Yu ◽  
He Liu ◽  
Qiuyue He ◽  
Guozhi Zhang ◽  
Zheliang Zhang ◽  
...  
Keyword(s):  
Power Equipment ◽  
Detection Technology ◽  
Insulation Defect

Research Status and Development Trend of Electromagnetic Defect Detection Logging

2013 ◽  
Vol 325-326 ◽  
pp. 856-860
Author(s):  
Zheng Guo Yan ◽  
Lin Zhao
Keyword(s):  
Defect Detection ◽  
Hot Spot ◽  
Development Trend ◽  
Research Status ◽  
Advantages And Disadvantages ◽  
Detection Technology ◽  
Metal Thickness ◽  
Theory Research ◽  
The Development Trend

Electromagnetic defect detection logging can measure multilayer pipeline and provide the information of casing defect and the remaining metal thickness, is the hot spot of the casing defect detection technology. This paper elaborates the advantages and disadvantages of electromagnetic defect detection logging and the present instrument situation, compares technical indexes of several new electromagnetic casing defect detection instruments, summarizes the latest research status, points out the problems existed in current researches and the development trend combining with the instrument index and theory research.

The Application and Research Status of Particle Counter in Domestic and Abroad

2011 ◽  
Vol 71-78 ◽  
pp. 3242-3245
Author(s):  
Zhi Ling Zhao ◽  
Chun Yi Duan ◽  
Ying Lin
Keyword(s):  
Water Treatment ◽  
Treatment Process ◽  
Technical Support ◽  
Raw Water ◽  
Particle Counter ◽  
Particle Count ◽  
Research Status ◽  
Water Treatment Process ◽  
Detection Technology ◽  
Water Pipelines

As a new detection technology，particle counter provides an indispensable data for optimizing and controlling water treatment process. Particle counter has been applied to water supplying in both domestic and overseas. There have been a lot of suggestions and applied researches now. Currently, particle count has been used for monitoring raw water, optimizing dosing quantity of flocculent, monitoring the effect of coagulation-sedimentation, surveying and evaluating the efficiency of filtering filter, monitoring water pipelines, and deep treatment, putting forward scientific and technical support for water treatment.

scholarly journals Reviews of Research on Mechanical Fault Diagnosis in GIS

2020 ◽  
Vol 155 ◽  
pp. 01015
Author(s):  
Yuqi Cai ◽  
Liang Jin
Keyword(s):  
Fault Diagnosis ◽  
Fault Detection ◽  
High Reliability ◽  
Research Direction ◽  
Fault Prediction ◽  
Future Research ◽  
Future Research Direction ◽  
Research Status ◽  
Detection Technology ◽  
At Home

Gas Insulated Switchgear (GIS) has been widely used in recent years due to their advantages of small floor area, high reliability and good safety. It has arised a series of problems. At present, researchers at home and abroad have done more in-depth research on insulation fault, but research on mechanical fault is insufficient. Firstly, this paper reviews the research status of mechanical fault detection technology in GIS at home and abroad. Secondly, the aspect of the principles of mechanical fault in GIS, fault judgment and location technology, and early fault prediction and status evaluation in GIS were summarized. Finally, the paper prospected the future research direction on this basis.

Research Status of Subsurface Damage Detection Technology of Optical Elements

2011 ◽  
Vol 48 (8) ◽  
pp. 081204
Author(s):  
刘健 Liu Jian ◽  
马占龙 Ma Zhanlong ◽  
王君林 Wang Junlin
Keyword(s):  
Damage Detection ◽  
Subsurface Damage ◽  
Optical Elements ◽  
Research Status ◽  
Detection Technology

scholarly journals Diagnosis and Classification Decision Analysis of Overheating Defects of Substation Equipment Based on Infrared Detection Technology

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Zhigang Shi ◽  
Yunlong Zhao ◽  
Zhanshuang Liu ◽  
Yanan Zhang ◽  
Le Ma
Keyword(s):  
Recognition Accuracy ◽  
Infrared Image ◽  
Normal Operation ◽  
Power Equipment ◽  
Relative Temperature ◽  
Thermal Failure ◽  
Detection Technology ◽  
Diagnosis And Classification ◽  
Substation Equipment ◽  
Infrared Diagnosis

Substation equipment is not only the main part of the power grid but also the essential part to ensure the development of the national economy and People's Daily life of one of the important infrastructure. How to ensure its normal operation and find the sudden failure has become a hot issue to be solved urgently. For thermal fault diagnosis needs to classify and identify different power equipment first, this paper designed an SVM infrared image classifier, which can effectively identify three types of common power equipment. The classifier extracts HOG features from the infrared images of power equipment processed by the above segmentation and combines them with SVM multiclassification to achieve the purpose of improving the recognition accuracy. The experiment uses the classifier to identify three kinds of equipment, and the results show that the comprehensive recognition accuracy of the classifier is more than 95.3%, which is better than the traditional classification method and meets the demand for classification accuracy. In this paper, the traditional method of relative temperature difference is improved by using the temperature data of the infrared image, which can automatically judge the thermal failure level of electric power equipment. Experiments show that the diagnosis system designed in this paper can classify faults and give treatment suggestions while judging whether there are thermal faults for three types of power equipment, which verifies the feasibility and effectiveness of the substation infrared diagnosis technology designed in this paper.

scholarly journals Temperature detection technology of power equipment based on Fiber Bragg Grating

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 663-667
Author(s):  
Xin Zhang ◽  
Zui Tao ◽  
Li Yang
Keyword(s):  
High Reliability ◽  
Signal Transmission ◽  
Electrical Power ◽  
System Control ◽  
Alarm System ◽  
Power Equipment ◽  
Single Cycle ◽  
Detection Technology ◽  
Temperature Detection ◽  
Fabry Perot

Abstract The temperature detection and alarm system of power equipment is supposed to be used in power accidents caused by overheating. In our experiment, we build a system to detect the temperature of electrical power equipment. According to the actual temperature fitting curve, the whole system uses the Fiber Bragg Gratings as the signal sensing and transmission media, using the tunable Fabry-Perot (FP) cavity filter to demodulate the fiber and a SLED light source which is considered high reliability. System control and signal processing is carried out by the STM32F407ZGT6 microcontroller and its internal single-cycle DSP. The system has the characteristics of strong anti-interference ability, high reliability and precision, simple installation, convenient maintenance, remote signal transmission.

Sign in / Sign up

Export Citation Format

Share Document