Analysis of structure importance of compensation capacitor in …
Experimental results indicate that the rankings of structure importance are not affected by ballast resistance of JTC in this method. The results also show that the …
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 …
The compensation capacitors fault detection method of jointless …
This method is verified that it can detect the location of fault capacitor when there is only one capacitor is fault, in addition, it largely overcomes the disadvantages existed in recent detection methods: high cost, bad detection timeliness and influence on …
(PDF) JTC online comprehensive fault diagnosis method based …
Aiming at the problem of incompatibility of the fault diagnosis method between JTC (Jointless Track Circuit) compensation capacitor and tuning zone, based on the amplitude envelope mathematical ...
Fault Diagnosis of Track Circuit Compensation Capacitor Based …
With regards to this, a fault diagnosis method for TC based on Grey Wolf Optimizer (GWO) algorithm is put forward in this paper. A Uniform Transmission Line (UTL) Model of TC is …
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. This method can locate real time capacitor fault by taking use of the measurement data collected at indoor fixed measuring nodes. To achieve the diagnosis goal, this paper establishes lumped parameters equivalent circuit model of …
A feasibility and method research on the on-line ...
As important reactive power equipment, parallel compensation capacitors play a key role in improving the power quality and the structure of the power system. At present, the detection of parallel compensation capacitors generally takes offline test, and the fault in operation mainly relies on the protection device action to be removed. However, there is a …
Factors affecting compensated capacitor faults based on …
Uninsulated track circuits are a key part of the train operation control system, and in uninsulated track circuits, compensation capacitor faults lead to reduced transmission distances due to increased transmission decay[1] this paper, the sample nonparametric test method is used to analyze the difference of the compensating …
87L Application on Long Transmission Line with Series …
The capacitor units include a set of small size capacitors in series and in parallel. The units are equipped with internal fuses. The Metal Oxide Varistor (MOV) is applied to reduce overvoltage across the capacitor without entirely bypassing the capacitor during a fault occurring outside of
Compensation Capacitor Status Monitoring Research Based on …
In the adjustment state, a fault in the compensation capacitor will cause a red light band; In the shunting state, compensating capacitor faults can cause the train to "drop code" and endanger the safety of train operation. ... Feng, D., Zhao, L.: Estimation method of JTC compensation capacitance based on TCR monitoring data. J. China …
Compensation Capacitor Status Monitoring Research Based on …
In foreign countries, reference [1] proposed a method for detecting compensation capacitor faults based on partial least squares regression, neural …
CN104597341A
The invention discloses a method for diagnosing faults inside a capacitor in distribution network series compensation. The method comprises the following steps: firstly, extracting capacitor voltage, fundamental waves of current and each harmonic wave through a FFT (fast fourier transform algorithm), respectively calculating the fundamental waves and the …
Reactive Power Compensation Methods
Reason for Low Power Factor: In Most of the industry, we will use three phase induction motor.Normally, the induction motor power factor will be 0.3 to 0.5 during light load condition and during full load condition the power factor increases to 0.85 to 0.95.; Using High number of arc lamps, electric discharge lamps and induction furnaces.
A novel full compensation method for the ground fault current of ...
The traditional arc suppression coil cannot compensate for the active and harmonic component of the ground fault current nor fully suppress the intermittent arc. For improvement, a novel full compensation method for the ground fault current of resonant grounded systems is proposed. The impedance of the compensation component is …
Research on Fault Location Method of Track Circuit …
The results show that the compensation capacitor fault location model based on probabilistic neural network has higher relative prediction accuracy and the …
Analysis of structure importance of compensation capacitor in …
A fault diagnosis method for the tuning area of jointless track circuits based on a neural network. ... Gu H, Dong W, Sun XY, et al. Fault diagnosis for ZPW2000A jointless track circuit compensation capacitor based on K-fault diagnosis. In: The 32nd Chinese control conference, Xi''an, China, 26–28 July 2013, pp.6305–6312.
Diagnosis Approach on Compensation Capacitor Fault of …
In order to improve the performance of the fault diagnosis of the compensation capacitor, a fault detection method based on simulated annealing …
Thermal Balancing Strategy Based on Voltage Compensation Method …
The capacitor is one of the key components in the Modular Multilevel Converter (MMC) system. Its thermal stress has an important effect on the reliability of the MMC system. Under normal operations, significant temperature distributions exist in capacitors among different submodules (SMs) of one MMC arm due to the capacitance variations. However, …
Compensation capacitor fault detection method in jointless track ...
： Transmission-line theory is used to study the impact on the short circuit current in the jointless railway track circuit caused by the faulty compensation capacitor.Levenberg-Marquardt(L-M) algorithm is used to verify the validity and adaptability of the regression model for the short circuit current.According to the operation principle of the cab …
CNN-LSTM Networks Based Fault Diagnosis Using Spatial and …
Compensation capacitor fault: In order to extend the transmission distance of the signal, compensation capacitors are installed in the rails. If these compensation capacitors are seriously damaged, it will cause the receiving voltage of the main rail and the relay voltage to drop, which may lead to the wrong judgment that the …
CN110988585A
The invention relates to the technical field of rail transit, and discloses an online diagnosis device and method for compensating capacitance faults based on the Internet of things, wherein the online diagnosis device for compensating capacitance faults comprises: the system comprises an acquisition unit, a transmission unit and a diagnosis unit, wherein …
CN110794239A
The invention discloses a device and a method for quickly detecting the fault of a compensation capacitor of an uninsulated track, comprising the following steps: the controller and two paths of inputs respectively connected with the controller; the first path is input to measure the rail surface voltage of the uninsulated track, and the voltage signal is …
A method to identify fault location in series ...
Comparison with traditional algorithm shows that using the proposed method stable judgment results can be obtained within entire fault process. ... connected with series compensation capacitors ...
Fault-tolerant compensation control for T-type three-level …
lower capacitors of the dc side, respectively, Mx and Vd are the fault indicator for average phase current and voltage deviation, respectively. The status value indicates which switch has failed, such as 1 means Sx1 is a fault. According to the preset threshold, the open-circuit fault can be located by the values of Mx and Vd, as shown in Table 3.
Compensation capacitor fault detection method in jointless track ...
Transmission-line theory is used to study the impact on the short circuit current in the jointless railway track circuit caused by the faulty compensation capacitor.Levenberg-Marquardt(L-M) algorithm is used to verify the validity and adaptability of the regression model for the short circuit current.According to the operation principle of the cab …
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 …
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 problem based on the compensation capacitors relationship in spatial dimension and the …
Analysis of structure importance of compensation capacitor in …
Zhao LH, Zhang CL, Qiu KM, et al. A fault diagnosis method for the tuning area of jointless track circuits based on a neural network. J Rail Rapid Transit ... et al. Fault diagnosis for ZPW2000A jointless track circuit compensation capacitor based on K-fault diagnosis. In: The 32nd Chinese control conference, Xi''an, China, 26–28 July 2013 ...
Compensation capacitor fault detection method in jointless track ...
Transmission-line theory is used to study the impact on the short circuit current in the jointless railway track circuit caused by the faulty compensation capacitor.Levenberg …
The track inspection vehicle data is utilized for fault feature ...
This paper presents a method for diagnosing online track circuit compensation capacitor fault based on K-fault Diagnosis. This method can locate real time capacitor fault by taking use of the ...
