The track inspection vehicle data is utilized for fault feature
The method of fault detection of compensation capacitor in jointless track circuit based on phase sp... October 2012 · Tiedao Xuebao/Journal of the China Railway Society Shangpeng Sun
Research on Metal and Living Foreign
An arrayed detection coil and comb capacitor combination mode is proposed to realize the function of the simultaneous detection of metal and living organism foreign
Harmonic Detection With Notch Filter Using Switched-Capacitor
The phenomena of harmonic compensation by APFs proposed from the end of the 1960s to the 1970s [1- All harmonic detection method s mentioned above have their (0.1 dB) switched-capacitor
The compensation capacitors fault detection method of jointless
This paper uses transport-line theory to construct equivalent model of jointless track circuit under shunted state and analyses the principle of track induced circuit in the disconnection fault of compensation capacitor based on the model. At the same time, according to the work principle
A Rapid Diagnosis Method for Multiple Compensation Capacitor
Aiming at possible multiple compensation capacitor faults existing in a track circuit, based on the mathematical model of locomotive signal induction voltage amplitude envelope, a rapid diagnosis
Fault detection during power swing in thyristor-controlled series
The proposed fault detection method based on the Mathematical Morphology is introduced in detail. If a TCSC is used instead of a series capacitor, fault detection will be even more challenging. In TCSC-based compensated lines, due to nonlinear changes in the compensation level, when faults and power swings occur, the TCSC performance area
Fault Diagnosis for Compensating Capacitors of Jointless Track
The DTW method is used for the first time in this situation to recover the function relationship between receiver''s peak voltage and shunt position and it can be used for online diagnosis of compensating capacitor, which has not yet been realized by existing methods. Aiming at the problem of online fault diagnosis for compensating capacitors of jointless track
Fault Detection during Power Swing in Thyristor-Controlled Series
swing, and existing methods for this detection might not be applicable. During power swing if the fault occurs at the end point of a line, at the swing center (power angle close to 180°) or with
The compensation capacitors fault detection method of
The compensation capacitors fault detection method of jointless track circuit based on DBWT and WR finally by detecting the changes of instantaneous frequency to diagnose the disconnection fault of compensation capacitor. This method is verified that it can detect the location of fault capacitor when there is only one capacitor is fault, in
The compensation capacitors fault detection method of
This method is verified that it can detect the location of fault capacitor when there is only one capacitor is fault, and largely overcomes the disadvantages existed in recent detection methods: high cost, bad detection timeliness and influence on railway transportation. This paper uses transport-line theory to construct equivalent model of jointless track circuit
The compensation capacitors fault detection method of
This paper uses transport-line theory to construct equivalent model of jointless track circuit under shunted state and analyses the principle of track induced circuit in the disconnection fault of compensation capacitor based on the model. At the same time, according to the work principle of cab signal and the consistent changes relationship between cab signal induced voltage and
Compensation Capacitor Status Monitoring Research Based on
In order to meet the needs of railway electrical departments for “state repair” of track circuit compensation capacitors and timely and effective monitoring of compensation capacitor status, this paper proposes a new method that combines the feature...
Compensation capacitor fault detection method in jointless track
The experimental results show that the detection effect of the capacitance fault detection method based on simulated annealing algorithm is accurate, and detection time is short, and the
CN114387239A
The embodiment of the invention provides a method and a device for detecting defects of a compensation capacitor, wherein the method comprises the following steps: acquiring current state data of the target compensation capacitor; determining the current environment temperature of the area where the target compensation capacitor is located, the current commercial power
Research on Fault Location Method of Track Circuit Compensation
The fault detection of compensation capacitors has always been one of the common concerns of researchers in the field of railway signaling. Many scholars have conducted in-depth research on the detection of compensation capacitors: In reference [1], aiming at
Compensation Capacitor Status Monitoring Research Based on
In order to meet the needs of railway electrical departments for "state repair" of track circuit compensation capacitors and timely and effective monitoring of compensation
Analysis of structure importance of compensation capacitor in
The results also show that the compensation capacitors closer to the receiving end are more important than those closer to the sending end. In addition, C2, C6, and C3 closer to receiving end are the most important and should be paid close attention during maintenance. Compensation capacitor fault detection method in jointless track circuit
Fast bus voltage detection method for single-phase power
Under dynamic conditions, the response time of traditional voltage detection methods is relatively lengthy, leading to overshoots in the DC-link voltage of single-phase power converters, which significantly degrades system performance. This study proposes a rapid voltage transient detection method based on reduced-order generalized integrator (ROGI) aimed at
A Rapid Diagnosis Method for Multiple Compensation Capacitor
Aiming at possible multiple compensation capacitor faults existing in a track circuit, based on the mathematical model of locomotive signal induction voltage amplitude
Analysis of structure importance of compensation capacitor in
Zhao LH, Xu JJ, Liu WN, et al. Compensation capacitor fault detection method in jointless track circuit based on Levenberg-Marquardt algorithm and generalized S-transform. Control Theory Appl 2010; 27: 1612–1617.
Research on Fault Location Method of Track Circuit Compensation
Compensation capacitor is an important component for extending the signal transmission of track circuit, and its safe operation is very important to the transportation business of rail transit.
A calibration-free capacitive moisture detection method for multiple
Meanwhile, the temperature compensation algorithm [7], [11], [12] and soil conductivity compensation algorithm [13], [14] are also the good way to improve the detection accuracy of capacitance sensor. However, for different soil types, there is still no universal calibration model of soil moisture sensor that can be used effectively.
An online detection method for capacitor voltage transformer
It can be seen from Table 4 that the rate of accuracy and precision of this method are higher than 99%, while the rate of accuracy and precision of the method proposed in [26] is less than 40% and 35%, respectively. The above experimental results show that the effectiveness of the evaluation results of this method is much higher than that of the existing methods.
The compensation capacitors fault detection method of jointless
A novel method based on Long Short-Term Memory (LSTM) network for the compensation capacitor disconnection fault detection and diagnosis in the ZPW-2000 Joint
Fault Diagnosis of Compensation Capacitor in Joint-less Track
The fault detection and diagnosis of compensation capacitors in the ZPW-2000 Joint-less Track Circuit (JTC) are quite crucial and challenging for Chinese railway safety. In this work, we present a novel method based on Long Short-Term Memory (LSTM) network for the compensation capacitor disconnection fault detection. We tackle the problem based on the compensation
Fault Diagnosis of Compensation Capacitor in Joint-less Track
In this work, we present a novel method based on Long Short-Term Memory (LSTM) network for the compensation capacitor disconnection fault detection. We tackle the
Compensation capacitor fault detection method in jointless
Request PDF | Compensation capacitor fault detection method in jointless track circuit based on Levenberg-Marquardt algorithm and generalized S-transform | Transmission-line theory is used to
A novel health state prediction approach based on
The compensation capacitors fault detection method of jointless track circuit based on DBWT and WR the fault diagnosis method for compensation capacitors of track circuits using the hierarchic
Fault Diagnosis of Compensation Capacitor in Joint-less Track
The fault detection and diagnosis of compensation capacitors in the ZPW-2000 Joint-less Track Circuit (JTC) are quite crucial and challenging for Chinese railwa
A novel health state prediction approach based on artificial
The remainder of the paper is organized as follows: Sect. 2 constructs a degradation feature extraction strategy based on the degradation model and transmission state model of compensation capacitors. Section 3 introduces methods and processes for setting up the SLCBN model. Taking the monitoring data of China''s high-speed railway field as the data
Fault Diagnosis of Compensation Capacitor in Joint-less Track
A novel method based on Long Short-Term Memory (LSTM) network for the compensation capacitor disconnection fault detection and diagnosis in the ZPW-2000 Joint-less Track Circuit is presented. The fault detection and diagnosis of compensation capacitors in the ZPW-2000 Joint-less Track Circuit (JTC) are quite crucial and challenging for Chinese railway
The compensation capacitors fault detection method of jointless
This paper uses transport-line theory to construct equivalent model of jointless track circuit under shunted state and analyses the principle of track induced circuit in the
Fault prediction of track circuit compensation capacitor based on
Based on time series data collected by the ZPW-2000A track circuit detection vehicle, which detects the induced voltage of compensating capacitor, this paper presents a method for predicting compensating capacitor faults using the MFO-LSTM prediction model. Specifically, an induced voltage sequence is established based on the section and month, and an LSTM
Fault Diagnosis for ZPW2000A jointless track circuit compensation
This paper presents a method for diagnosing online track circuit compensation capacitor fault based on K-fault Diagnosis, which can locate real time capacitor fault by taking use of the measurement data collected at indoor fixed measuring nodes. This paper presents a method for diagnosing online track circuit compensation capacitor fault based on K-fault
The method for automatic compensation and detection of earth
This scheme can be achieved by a TSC (thyristor switched capacitor) automatic tuning arc suppression coil with a parallel resistor. This paper presents the compensation principle of earth capacitance current and the detection methods of a faulty feeder. It also discusses the selection of the parallel resistor value.
Online Detection Method for Capacitor Voltage Transformer
A robust detection and diagnosis method for incipient faults under the principal component analysis that can detect all incipient sensor faults in traction systems of high-speed trains in real time by comparing reference probability density functions (PDFs) with the online estimated PDFs.
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