ZPW-2000 series track circuit compensation capacitance parameter estimation method and device

A technology for compensating capacitors and track circuits, which is applied in capacitance measurement, measuring devices, measuring resistance/reactance/impedance, etc., can solve problems such as easy misdiagnosis, achieve high optimization efficiency, good global optimization performance, high adaptability and The effect of accuracy

Pending Publication Date: 2022-02-25
四川高新轨道交通产业技术研究院
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the disadvantages of misdiagnosis that are easy to occur when diagnosing railway faults in the prior art, and to provide a ZPW-2000 series track circuit compensation capacitance parameter estimation method and device

Method used

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  • ZPW-2000 series track circuit compensation capacitance parameter estimation method and device
  • ZPW-2000 series track circuit compensation capacitance parameter estimation method and device
  • ZPW-2000 series track circuit compensation capacitance parameter estimation method and device

Examples

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Effect test

Embodiment 1

[0035] A ZPW-2000 series track circuit compensation capacitor parameter estimation method, such as figure 1 shown, including the following steps:

[0036] S1: Data collection, real-time collection of induced voltage data of locomotive signal sample collection points in the dynamic detection system;

[0037] S2: data preprocessing, preprocessing the collected induced voltage data, including filtering harmonics, noise reduction and normalization;

[0038] S3: Data conversion, extracting the envelope of the preprocessed induced voltage data to obtain the actual data A of the induced voltage amplitude envelope (Locomotive Signal Amplitude Envelope, LSAE) Icv (x);

[0039] S4: Establish a basic database. For the track section, use mathematical modeling to calculate the theoretical data A of the induced voltage amplitude envelope corresponding to this area Rcv (x), and the theoretical data A is enveloped by the amplitude of the induced voltage Rcv (x) Establish a basic database,...

Embodiment 2

[0056] A ZPW-2000 series track circuit compensation capacitance parameter estimation method, the difference from Embodiment 1 is:

[0057] Select a group of data collected from the signal dynamic detection system on the comprehensive detection vehicle, and use the detection results of the ZPW-2000 series track circuit as a comparison object to verify the method provided by the present invention. The field detection results show that: the 7th compensation capacitance value down to 10µF;

[0058] Estimate the compensation capacitance parameter of track circuit with the method provided by the present invention, obtain the result as shown in table 1, it can be seen that for C 7 The estimated result is 10.2867μF, which has dropped to less than a quarter of the standard value, and on-site maintenance personnel can replace the capacitor in advance according to the result.

[0059] Table 1 Verification results and errors

[0060]

Embodiment 3

[0062] This embodiment also provides a fault diagnosis device for electrical insulation joints of track circuits, which is installed on a comprehensive inspection vehicle and has a real-time interface with the railway signal dynamic detection system, such as figure 2 As shown, the device includes at least one processor, and a memory communicatively connected with the at least one processor; the memory stores instructions executable by the at least one processor, and the instructions are executed by the at least one processor so that the at least one processing A device capable of performing any of the methods described above.

[0063] Using the above technical scheme, when using the measured data of the induced voltage of the locomotive to estimate the parameters of the compensation capacitor, firstly, the sample data is preprocessed, and the capacitance parameter of the compensation capacitor is used as a decision variable, and the actual data and the actual data are envelope...

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Abstract

The invention discloses a ZPW-2000 series track circuit compensation capacitance parameter estimation method and device, and relates to the technical field of railway signal equipment fault processing. The method comprises the steps that when compensation capacitance parameter estimation is carried out through induction voltage measured data of a locomotive, firstly, sample data are preprocessed, compensation capacitance parameters serve as decision variables, the difference between minimum induction voltage amplitude envelope actual data and induction voltage amplitude envelope theoretical data calculated based on a mathematical model serves as a target, a fitness function is constructed, a gray wolf optimization algorithm is adopted to iteratively search an optimal compensation capacitance parameter value according to the characteristics of insensitivity to an initial solution value, relatively high optimization efficiency, good global optimization performance and the like of the gray wolf optimization algorithm, the compensation capacitance parameter of the ZPW-2000 series track circuit can be estimated, and relatively high adaptability and accuracy are achieved.

Description

technical field [0001] The invention relates to the technical field of fault handling of railway signal equipment, in particular to a ZPW-2000 series track circuit compensation capacitance parameter estimation method and device. Background technique [0002] The track circuit uses steel rails as conductors to automatically and continuously detect whether the line is occupied by vehicles, and also transmit control information to the train. The ZPW-2000 series non-insulated track circuits commonly used in my country's high-speed railways make the track transmission characteristics tend to be resistive by adding compensation capacitors on the tracks. Factors such as surge voltage in the traction section, lightning, and track current skin effect may cause the fault of the compensation capacitor. The fault of the compensation capacitor will deteriorate the transmission characteristics of the track circuit, shorten the effective transmission distance of the track signal, and cause...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R27/26
CPCG01R27/2605
Inventor 王梓丞虞凯王永璋杨捷易立富杨岗王孔明庞雪春孟振华刘孜学王富斌谢联莲谭冠华范琪汪峥陈庆
Owner 四川高新轨道交通产业技术研究院
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