THE SENSITIVITY FAULT DIAGNOSIS METHOD OF GROUNDING GRID BASED ON LSQR REGULARIZATION ALGORITHM

2016 ◽  
Author(s):  
MANLING DONG ◽  
JIAJIA HU ◽  
DEGUI YAO ◽  
XIAOKUO KOU ◽  
FAN YANG ◽  
...  
Keyword(s):  
Fault Diagnosis ◽  
Regularization Algorithm ◽  
Grounding Grid ◽  
Diagnosis Method ◽  
Grid Based

A Fault Diagnosis Method for Substation Grounding Grid Based on the Square-Wave Frequency Domain Model

2012 ◽  
Vol 19 (1) ◽  
pp. 63-72 ◽  
Author(s):  
Peng-He Zhang ◽  
Jun-Jia He ◽  
Dan-Dan Zhang ◽  
Lan-Min Wu
Keyword(s):  
Fault Diagnosis ◽  
Frequency Domain ◽  
Domain Model ◽  
Wave Frequency ◽  
Scale Model ◽  
Frequency Model ◽  
Square Wave ◽  
Grounding Grid ◽  
Diagnosis Method ◽  
Grid Based

A Fault Diagnosis Method for Substation Grounding Grid Based on the Square-Wave Frequency Domain ModelCurrent methods of fault diagnosis for the grounding grid using DC or AC are limited in accuracy and cannot be used to identify the locations of the faults. In this study, a new method of fault diagnosis for substation grounding grids is proposed using a square-wave. A frequency model of the grounding system is constructed by analyzing the frequency characteristics of the soil and the grounding conductors into which two different frequency square-wave sources are injected. By analyzing and comparing the corresponding information of the surface potentials of the output signals, the faults of the grounding grid can be diagnosed and located. Our method is verified by software simulation, scale model experiments and field experiments.

scholarly journals A Fault Diagnosis Method for On Load Tap Changer of Aerospace Power Grid Based on the Current Detection

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 24148-24156 ◽  
Author(s):  
Zhenhua Li ◽  
Qiuhui Li ◽  
Zhengtian Wu ◽  
Jie Yu ◽  
Ronghao Zheng
Keyword(s):  
Fault Diagnosis ◽  
Power Grid ◽  
Diagnosis Method ◽  
Tap Changer ◽  
Load Tap Changer ◽  
Current Detection ◽  
Grid Based

Fault Diagnosis for Grounding Grids Based on Genetic Algorithm and Support Vector Machine

2013 ◽  
Vol 787 ◽  
pp. 909-913
Author(s):  
Ling Jian Li ◽  
Min Fang Peng ◽  
Ke Xin Zhao
Keyword(s):  
Genetic Algorithm ◽  
Support Vector Machine ◽  
Fault Diagnosis ◽  
Support Vector ◽  
Grounding Grid ◽  
Grounding Grids ◽  
Diagnosis Method ◽  
Simulation Results ◽  
Type Of Failure ◽  
Corrosion Simulation

This paper presents a genetic algorithm to optimize support vector machine parameters for grounding grid fault diagnosis method. Grounding grid is equivalent to a pure resistance model, extract characteristics of different kinds of corrision states, Using genetic algorithm optimize support vector machine kernel function parameters, achieve the identification of the type of failure mode, Grounding grid of 6 × 6 test can quickly detect the grounding grid corrosion, simulation results show that the method has higher accuracy than support vector machine.

Study on corrosion fault diagnosis for grounding grid based on the law of conservation of power

2019 ◽  
pp. 730-737
Author(s):  
Beisheng Yuan ◽  
Chaofan Li ◽  
Fujue Wang ◽  
Xinyu Feng ◽  
Yameng Fu
Keyword(s):  
Fault Diagnosis ◽  
Grounding Grid ◽  
The Law ◽  
Grid Based
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