Railway traction network fault distance measurement visual monitoring method and device

Abstract

The invention discloses a railway traction network fault distance measurement visual monitoring method and device. The method comprises the following steps: acquiring power supply arm information and fault information; constructing a basic block diagram of a fault analysis chart corresponding to the power supply arm, and marking switch information included in the power supply arm information and the fault information in the fault analysis chart; performing fault distance analysis according to the fault information and the power supply arm information to obtain a fault analysis result; and positioning a fault display position in the fault analysis chart according to a fault analysis result, and marking the fault display position in the fault analysis chart. Through visual drawing of a fault analysis result, a switch state and a fault display position can be visually seen in a drawn fault analysis chart, and monitoring personnel are helped to visually understand a fault distance.

Description

Technical Field

[0001] The present invention relates to the technical field of railway traction network fault location and monitoring, and specifically relates to a method and device for visual monitoring of railway traction network fault location. Background Art

[0002] Most high-speed railways adopt the fully parallel AT power supply mode, and fault location devices are installed at substations, AT stations, and section posts of the power supply arm to quickly and accurately locate the fault point when a traction network fault occurs. The fault location device analyzes the fault by collecting the electrical quantities at each station and post on the power supply arm during a fault, obtains the fault analysis result, and realizes the judgment of the fault line type, fault type, and the calculation of the fault distance.

[0003] However, the fault analysis result is generally displayed in text form, and the monitoring personnel cannot intuitively see the fault display position and the relationship between the fault distance and the power supply arm from the text content. Summary of the Invention

[0004] The purpose of the present invention is to provide a method and device for visual monitoring of railway traction network fault location. By visually plotting the fault analysis result, the switch state and the fault display position can be intuitively seen in the plotted fault analysis diagram, helping the monitoring personnel to intuitively understand the fault distance.

[0005] To achieve the above purpose, the present application provides the following solutions:

[0006] On the one hand, the present application provides a method for visual monitoring of railway traction network fault location, which specifically includes the following steps:

[0007] S1. Obtain the power supply arm information and fault information;

[0008] S2. Construct the basic block diagram of the fault analysis diagram corresponding to the power supply arm, and mark the switch information included in the power supply arm information and fault information in the fault analysis diagram;

[0009] S3. Analyze the fault distance according to the fault information and the power supply arm information to obtain the fault analysis result;

[0010] S4. Locate the fault display position in the fault analysis diagram according to the fault analysis result, and mark the fault distance at the fault display position in the fault analysis diagram.

[0011] In some specific embodiments, the power supply arm generally refers to a power supply unit composed of a substation, an AT station, and a section post. The process of constructing the basic block diagram in step S2 is as follows:

[0012] The fault analysis diagram includes a substation area corresponding to a power supply arm, an AT substation area, and a section post area, a first fault interval area set between the substation area and the AT substation area, and a second fault interval area set between the AT substation area and the section post area;

[0013] Draw the up-line and down-line that run through the substation area, the first fault interval area, the AT substation area, the second fault interval area, and the section post area, and display the preset attributes of each line in the up-line and down-line;

[0014] Add equipment graphic elements in the substation area, the first fault interval area, the AT substation area, the second fault interval area, and the section post area, and display the preset graphic element attributes of the equipment graphic elements.

[0015] In some specific embodiments, the power supply arm information includes the states of each switch, and the specific process of fault analysis in step S3 is as follows:

[0016] Identify the current operation mode of the power supply arm according to the states of each switch, select the corresponding ranging analysis method according to the operation mode, combine with the fault information to perform fault distance analysis, and obtain the fault analysis result. The fault analysis result includes the fault type, the fault line type, the fault interval, and the fault distance.

[0017] In some specific embodiments, the ranging analysis method selects any one of the transverse current ratio, the suction current ratio, the up-down line current ratio, and the reactance method.

[0018] In some specific embodiments, the preset attributes of each line include: the line type to which it belongs, the line name, the line length, and the coordinate position of the line in the fault analysis diagram. The line type to which it belongs includes the up-line and the down-line, and both the up-line and the down-line include three lines, namely the T line, the R line, and the F line, which are arranged in parallel from top to bottom.

[0019] In some specific embodiments, the fault line type includes the up-line and the down-line, the fault type includes three types: TR, TF, and FR, and the fault interval includes the first fault interval and the second fault interval.

[0020] In some specific embodiments, the specific process of step S4 is as follows:

[0021] Locate the corresponding fault interval area in the fault analysis diagram according to the fault interval;

[0022] Locate the corresponding fault line type in the corresponding fault interval area according to the fault line type;

[0023] Locate the corresponding fault line in the fault line type of the corresponding fault interval area according to the fault type;

[0024] Determine the display position of the fault distance in the fault analysis diagram according to the positional relationship between the fault distance and the actual line and the scale when drawing the fault analysis diagram, and identify the fault distance using the display position of the identification graphic element in the fault analysis diagram.

[0025] In some specific embodiments, the process of determining the display position of the fault distance in the fault analysis diagram is as follows:

[0026] Determine the display length of the fault distance in the fault analysis diagram according to the ratio between the fault distance and the actual line and the line length of the determined fault line;

[0027] Determine the starting display position coordinates and the ending display position coordinates of the display area of the identification graphic element in the fault analysis diagram according to the positional relationship, display length, and fault type between the fault distance and the actual line;

[0028] Draw the identification graphic element in the fault analysis diagram according to the starting display position coordinates and the ending display position coordinates and display the fault analysis result in text. The size of the identification graphic element corresponds to the area of the display area.

[0029] In a second aspect, the present application discloses a visual monitoring device for railway traction network fault location, including a railway traction network fault location expert system, an intelligent operation and maintenance system, and a database server. Among them,

[0030] The railway traction network fault location expert system includes:

[0031] A data entry module for entering power supply arm information and fault information;

[0032] A fault information monitoring module for real-time monitoring and automatically obtaining online captured fault information from the intelligent operation and maintenance system;

[0033] A fault analysis module for performing fault distance analysis based on the fault information and the power supply arm information to obtain a fault analysis result;

[0034] A fault analysis diagram drawing module for constructing a basic block diagram of the fault analysis diagram corresponding to the power supply arm, marking the switch information included in the power supply arm information and the fault information in the fault analysis diagram, positioning the fault display position in the fault analysis diagram according to the fault analysis result, and marking the fault display position in the fault analysis diagram;

[0035] A fault information source module for judging the source of the fault information. When the fault information is entered by the data entry module, send the fault analysis diagram to the fault display module for display; when the fault information is obtained from the intelligent operation and maintenance system, send the fault analysis diagram to the intelligent operation and maintenance system;

[0036] A fault display module for displaying the fault analysis diagram;

[0037] An intelligent operation and maintenance system is used to obtain fault information in real time when a fault occurs and store the fault information in the fault data table of a database server, and display a fault analysis diagram when receiving the fault analysis diagram.

[0038] The beneficial effects of the present invention are as follows:

[0039] In this application, through visual drawing of the fault analysis results, the fault type and the fault display position where the fault distance is located are identified by identification graphic elements. In the drawn fault analysis diagram, the switch state and the fault display position can be intuitively seen, helping the monitoring personnel to intuitively understand the fault distance. Brief Description of the Drawings

[0040] Figure 1 It is a schematic diagram of a railway traction network fault distance measurement visualization monitoring method provided by an embodiment of this application;

[0041] Figure 2 It is a schematic diagram of the fault analysis diagram interface provided by an embodiment of this application;

[0042] Figure 3 It is a schematic diagram of a railway traction network fault distance measurement visualization monitoring device provided by an embodiment of this application. Detailed Embodiments

[0043] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The description of at least one exemplary embodiment below is actually only illustrative and in no way limits the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present invention.

[0044] Unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and values described in these embodiments do not limit the scope of the present invention.

[0045] At the same time, it should be understood that for the convenience of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship.

[0046] In addition, for the sake of clarity and conciseness, the descriptions of well-known structures, functions and configurations may be omitted. Those of ordinary skill in the art will recognize that various changes and modifications can be made to the examples described herein without departing from the spirit and scope of the present disclosure.

[0047] Technologies, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, such technologies, methods, and devices shall be regarded as part of the authorization specification.

[0048] In all the examples shown and discussed here, any specific values should be construed as merely exemplary and not as a limitation. Thus, other examples of the exemplary embodiments may have different values.

[0049] Embodiment 1

[0050] As Figure 1 shown, this embodiment provides a visual monitoring method for fault location in a railway traction network, specifically including the following steps:

[0051] S1. Obtain feeder arm information and fault information;

[0052] A feeder arm generally refers to a power supply unit composed of a substation, an AT substation, and a section post. The parameter information of the feeder arm includes the line name, substation name, and the kilometer marks of the connection points of the substation, AT substation, and section post to the overhead line, the length of the supply line, etc.

[0053] The fault information includes the currents of the downstream T line, downstream F line, upstream T line, and upstream F line, the angles corresponding to each current, and the switch status, etc. at the time of fault in the substation, AT substation, and section post.

[0054] S11. Obtain feeder arm information

[0055] A feeder arm in a railway is uniquely determined by three levels: line - substation - mileage direction. A three - layer tree structure of line - substation - mileage direction is established in the railway traction network fault location expert system. This tree structure supports the addition, modification, and deletion of lines and substations. Users can enter the line name and substation name of the feeder arm according to the actual on - site situation.

[0056] After entering the line name and substation name of the feeder arm and selecting the mileage direction, design an input interface for the detailed information of the feeder arm on the right side of the interface, and enter the detailed information of the feeder arm in this interface;

[0057] S12. Obtain fault information

[0058] There are two ways to obtain fault information. One is to enter fault information in the fault information input interface provided by the fault location expert system, which supports multiple input methods such as manual entry, batch copying, and file import. The status information of the switch is also included in the fault information, and the status information of the switch can be used to judge the operation mode.

[0059] Another way to obtain fault information is to interact with the intelligent operation and maintenance system. The intelligent operation and maintenance system obtains fault information in real time when a fault occurs and stores the fault information in the fault data table of the database server. The fault location expert system uses the database listening function to monitor the fault information in real time and automatically grabs the fault information online from the operation and maintenance system.

[0060] S13. Data integrity verification

[0061] The fault location expert system verifies the integrity of the obtained fault information. When the data of the AT substation or the sectionalizing substation is missing, the data is complemented according to the data complementation algorithm. The complete fault information includes the fault sequence number, fault time, line name, substation name; the switch states of DL1 / DL2 / GK0 / AT1 / AT2 in the AT substation and the sectionalizing substation; the total suction current (A) of the substation, AT substation and sectionalizing substation; the up / down T / F line current (A) and current angle (°) of the substation, AT substation and sectionalizing substation; the up / down voltage (kV) of the AT substation and the sectionalizing substation.

[0062] Specifically, taking the case of missing data of the AT substation as an example, the specific process of the data complementation algorithm is as follows:

[0063] 1. Complement the suction current of the AT substation

[0064] According to the node balance principle, using the relationship between the total outgoing current and the substation, AT substation, and sectionalizing substation, calculate the missing total suction current value and angle of the AT substation.

[0065] 2. The complementation of the up T-line current, up F-line current, down T-line current, and down F-line current of the AT substation is related to the fault type.

[0066] Taking the occurrence of a down T-line fault as an example:

[0067] According to the node balance principle, use the up T-line current of the substation and the up T-line current of the sectionalizing substation to complement the up T-line current value and direction of the AT substation.

[0068] The complementation method of the down F-line current and up F-line current of the AT substation is similar to the complementation method of the up T-line current.

[0069] Judge whether the suction current of the complemented AT substation is in the same direction as the up T-line current of the AT. According to the judgment result, use the node balance principle to complement the current value and direction of the fault side (i.e., the down T-line) of the AT substation.

[0070] S2. Perform fault distance analysis based on the fault information and power supply arm information to obtain the fault analysis result;

[0071] Specifically, the power supply arm information includes the status of each switch. The current operation mode of the power supply arm is identified based on the status of each switch. According to the operation mode, the corresponding ranging analysis method is selected, and combined with the fault information, the fault distance analysis is carried out to obtain the fault analysis result. The fault analysis result includes the fault type, fault line type, fault section, and fault distance. The fault line type includes the up line and the down line, the fault type includes three types: TR, TF, and FR, and the fault section includes the first fault section and the second fault section. Among them, the ranging analysis method can be any one of the transverse connection current ratio, suction current ratio, up and down line current ratio, and reactance method.

[0072] Generally, the operation modes of the traction network include full parallel AT, parallel connection of AT substations, direct supply of section substations, direct supply of AT substations, parallel connection of section substations, full direct supply, etc. The same operation mode supports multiple fault analysis methods, and the same ranging method can also be used for different operation modes.

[0073] The railway traction network fault ranging expert system can automatically identify the operation mode according to the switch status input by the user. At the same time, it also supports manual direct specification of the operation mode for fault analysis.

[0074] S3. Construct the basic block diagram of the fault analysis diagram corresponding to the power supply arm, and mark the switch information included in the power supply arm information and the fault information in the fault analysis diagram;

[0075] Among them, the power supply arm generally refers to a power supply unit composed of a substation, an AT substation, and a section substation. The process of constructing the basic block diagram is as follows:

[0076] The fault analysis diagram includes the substation area, AT substation area, and section substation area corresponding to the power supply arm, the first fault section area set between the substation area and the AT substation area, and the second fault section area set between the AT substation area and the section substation area;

[0077] Draw the up line and down line passing through the substation area, the first fault section area, the AT substation area, the second fault section area, and the section substation area, and display the preset attributes of each line in the up line and down line;

[0078] The preset attributes of each line include: the line type it belongs to, the line name, the line color, the line length, and the coordinate position of the line in the fault analysis diagram. The line type it belongs to includes the up line and the down line, and both the up line and the down line include three lines: the T line, the R line, and the F line arranged parallel from top to bottom.

[0079] Add device graphic elements in the substation area, the first fault section area, the AT substation area, the second fault section area, and the section substation area, and display the preset graphic element attributes of the device graphic elements.

[0080] As shown in the figure, the device graphic elements include the DL1 switch and DL2 switch of the substation, the DL1 switch, DL2 switch, and GK0 / AT1 / AT2 switches of the AT substation, and the DL1 switch, DL2 switch, and GK0 / AT1 / AT2 switches of the section post. The preset graphic element attributes include graphic element name, display color, size, display position coordinates, etc.; the device graphic elements are displayed at the corresponding positions in the fault analysis diagram according to the set display position coordinates.

[0081] S4. Locate the fault display position in the fault analysis diagram according to the fault analysis result, and mark the fault distance at the fault display position in the fault analysis diagram.

[0082] Specifically, the fault analysis result obtained according to the fault analysis is shown in Table 1:

[0083] Table 1

[0084] Fault time xx-xx-xx Line name xx High-Speed Railway Station name xx Substation Fault direction Large mileage Fault line type Downlink Fault type T-R fault Fault section Second section Fault location method Cross-connected current ratio Fault distance 251.98km

[0085] As Figure 2 shown, based on the fault analysis result in Table 1, taking the TR fault as an example, the drawing method of the fault analysis diagram marked with the fault position is as follows:

[0086] According to the fault section, here the fault section is the second fault section, then locate the corresponding fault section area in the fault analysis diagram; locate the second fault section area;

[0087] According to the fault track type, here the fault track type is the down track, locate the corresponding fault track type in the corresponding fault section area; locate the down track area of the second fault section area;

[0088] According to the fault type, locate the corresponding fault line in the fault track type of the corresponding fault section area; the TR fault is located on the T line and the R line; according to the relative position between the T line and the R line during drawing, the straight-line distance between the T line and the R line in the fault analysis diagram can be obtained;

[0089] According to the positional relationship between the fault distance and the actual line and the scale during drawing the fault analysis diagram, determine the display position of the fault distance in the fault analysis diagram, and use the identification graphic element to mark the fault distance at the display position in the fault analysis diagram.

[0090] Specifically, the process of determining the display position of the fault distance in the fault analysis diagram is as follows:

[0091] According to the ratio of the fault distance to the actual line and the determined line length of the fault line, determine the display length of the fault distance in the fault analysis diagram;

[0092] Determine the starting display position coordinates and the ending display position coordinates of the identification graphic element in the fault analysis diagram according to the position relationship between the fault distance and the actual line, the display length, and the fault type;

[0093] According to the starting display position coordinates and the ending display position coordinates, draw the identification graphic element in the fault analysis diagram and display the fault analysis result in text. The size of the identification graphic element corresponds to the area of the display area.

[0094] As Figure 2 shown, when a TR fault occurs, the starting line is the T line and the ending line is the R line. From the ratio between the fault distance and the actual line length and the length of the R line, the display length of the fault distance in the fault analysis diagram can be obtained. From the display length and the straight-line distance between the T line and the R line, the display area of the display area can be calculated. Also, according to the position relationship between the fault distance and the actual line, the display position of the graphic element identification in the fault analysis diagram can be obtained. For example, if the fault occurs at 1 / 3 of the actual line, correspondingly, the graphic element identification is displayed at 1 / 3 of the R line (based on the position and length of the R line). According to the display position, display length, and fault line, the starting display position coordinates and the ending display position coordinates of the display area can be obtained, that is, the coordinate positions of the T line and the R line. Then, draw the graphic element identification in the display area. Exemplarily, the present application uses a lightning graphic element to identify the fault position. It can be seen that the size of the lightning graphic element corresponds to the area of the display area, and the lightning identification points from the T line to the R line.

[0095] Embodiment 2

[0096] As Figure 3 shown, this embodiment discloses a visual monitoring device for railway traction network fault location, including a railway traction network fault location expert system, an intelligent operation and maintenance system, and a database server. Among them,

[0097] The railway traction network fault location expert system includes:

[0098] A data entry module for entering power supply arm information and fault information;

[0099] A fault information monitoring module for monitoring in real time and automatically obtaining online captured fault information from the intelligent operation and maintenance system;

[0100] A fault analysis module for analyzing the fault distance according to the fault information and the power supply arm information to obtain a fault analysis result;

[0101] The fault analysis diagram drawing module is used to construct the basic block diagram of the fault analysis diagram corresponding to the power supply arm, mark the switch information included in the power supply arm information and the fault information in the fault analysis diagram, locate the fault display position in the fault analysis diagram according to the fault analysis result, and mark the fault display position in the fault analysis diagram;

[0102] The fault information source module is used to judge the source of the fault information. When the fault information is input by the data entry module, the fault analysis diagram is sent to the fault display module for display; when the fault information is obtained from the intelligent operation and maintenance system, the fault analysis diagram is sent to the intelligent operation and maintenance system;

[0103] The fault display module is used to display the fault analysis diagram;

[0104] The intelligent operation and maintenance system is used to obtain the fault information in real time when a fault occurs and store the fault information in the fault data table of the database server, and display the fault analysis diagram when receiving the fault analysis diagram.

[0105] The railway traction network fault location expert system (hereinafter referred to as the system) in this embodiment can, based on the wiring characteristics of the catenary and the fault characteristics after the catenary fault trip, realize the identification of the power supply arm operation mode, the judgment of the fault type and the fault line type, the calculation of the fault distance and the fault kilometer mark, and the current balance degree analysis by means of offline input of fault data and switch states. When the data of the AT substation or section substation is missing, the data completion algorithm can be used for fault analysis to help on-site staff quickly locate the fault and improve the efficiency of fault location.

[0106] 1) Generally, the operation modes of the traction network include full parallel AT, parallel connection of AT substations and direct supply of section substations, direct supply of AT substations and parallel connection of section substations, full direct supply, etc. The same operation mode supports multiple fault analysis methods.

[0107] When the breaker switch position collected by the fault location device of the traction substation is incorrect, it will cause incorrect judgment of the operation state, which in turn affects the accuracy of fault analysis. The railway traction network fault location expert system can automatically identify the operation mode according to the switch state input by the user. At the same time, it also supports manual direct specification of the operation mode for fault analysis.

[0108] 2) When the fault location device of a certain substation is malfunctioning or the ranging channel is interrupted, it will cause the data of the power supply arm of this substation to be unable to be uploaded to the substation, affecting the fault ranging analysis. The railway traction network fault location expert system can automatically complete the missing substation data by using the data completion algorithm according to the data of other substations and recalculate the fault distance.

[0109] 3) The information required for fault data analysis includes the parameter information of the power supply arm and the fault information. Generally, the power supply arm refers to a power supply unit composed of a substation, an AT substation, and a section post. The parameter information of the power supply arm includes the line name, substation name, and the kilometer marks of the access points of the substation, AT substation, and section post on the line, as well as the length of the power supply line, etc.

[0110] The fault information includes the downlink T-line current, downlink F-line current, uplink T-line current, uplink F-line current voltage, the angles corresponding to each current, and the switch status, etc. when the substation, AT substation, and section post have faults.

[0111] 4) The fault information required for fault analysis can be entered offline to achieve offline analysis and display, or the fault information can be entered offline, and the fault location expert system can be run independently to implement functions such as fault current synchronization, data anomaly detection and completion, fault analysis, and ranging calculation, and the analysis results can be displayed on the traction network fault location expert system interface to assist on-site operation and maintenance personnel in quickly locating and handling faults.

[0112] 5) In addition to supporting offline analysis without being restricted by network anomalies, the system can also interact with the intelligent operation and maintenance system when the network is normal according to needs, and monitor the data of the operation and maintenance system online to achieve online analysis and display: The traction network fault location expert system listens in real time and automatically grabs fault information from the 6C operation and maintenance system online, implements functions such as fault current synchronization, data anomaly detection and completion, fault analysis, and ranging calculation, and returns the analysis results to the 6C operation and maintenance system, and displays the fault analysis results at the 6C operation and maintenance system end to provide data support for dispatchers to make quick decisions.

[0113] The above are only the preferred embodiments of the present invention, and do not impose any form of limitation on the present invention. Based on the technical essence of the present invention, any simple modifications, equivalent replacements, and improvements made to the above embodiments within the spirit and principles of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A railway traction network fault distance visualization monitoring method, characterized in that: The specific steps include: S1. Obtain power supply arm information and fault information; S2. Construct a basic block diagram of a fault analysis diagram corresponding to the power supply arm, and mark the power supply arm information and the switch information included in the fault information in the fault analysis diagram; S3. Perform fault distance analysis based on the fault information and power supply arm information to obtain a fault analysis result; S4. Locate the fault display position in the fault analysis diagram according to the fault analysis result, and mark the fault distance at the fault display position in the fault analysis diagram.

2. The railway traction network fault distance visualization monitoring method according to claim 1 is characterized in that: The power supply arm includes a power supply unit consisting of a substation, an AT station and a substation. The process of constructing the basic block diagram in step S2 is as follows: The fault analysis diagram includes a substation area, an AT area and a sub-district area corresponding to the power supply arm, a first fault interval area set between the substation area and the AT area, and a second fault interval area set between the AT area and the sub-district area; Draw the uplink and downlink lines that pass through the substation area, the first fault interval area, the AT area, the second fault interval area, and the substation area, and display the preset attributes of each line in the uplink and downlink lines; Add equipment graphics in the substation area, the first fault interval area, the AT station area, the second fault interval area, and the substation area, and display the preset graphics attributes of the equipment graphics.

3. The railway traction network fault distance visualization monitoring method according to claim 2 is characterized in that: The power supply arm information includes the status of each switch. The specific process of fault analysis in step S3 is as follows: The current operating mode of the power supply arm is identified according to the status of each switch, and the corresponding distance measurement analysis method is selected according to the operating mode and combined with the fault information to perform fault distance analysis to obtain the fault analysis results. The fault analysis results include fault type, fault line, fault interval and fault distance.

4. The railway traction network fault distance visualization monitoring method according to claim 3 is characterized in that: The ranging analysis method is selected from any one of the cross-connection current ratio, the suction current ratio, the uplink and downlink current ratio, and the reactance method.

5. The railway traction network fault distance visualization monitoring method according to claim 3 is characterized in that: The preset attributes of each line include: line type, line name, line length and line coordinate position in the fault analysis diagram. The lines include uplink and downlink, and both uplink and downlink include three lines, namely T line, R line and F line, arranged in parallel from top to bottom.

6. The railway traction network fault distance visualization monitoring method according to claim 5 is characterized in that: The fault lines include uplink and downlink, the fault types include TR, TF, and FR, and the fault intervals include the first fault interval and the second fault interval.

7. The railway traction network fault distance visualization monitoring method according to claim 5 is characterized in that: The specific process of step S4 is: According to the fault interval, locate the corresponding fault interval area in the fault analysis diagram; According to the fault type, locate the corresponding fault type in the corresponding fault interval area; According to the fault type, locate the corresponding fault line in the fault line category of the corresponding fault interval area; According to the positional relationship between the fault distance and the actual line and the scale when drawing the fault analysis diagram, the display position of the fault distance in the fault analysis diagram is determined, and the fault distance is marked at the display position of the fault analysis diagram using an identification graphic element.

8. The railway traction network fault distance visualization monitoring method according to claim 7 is characterized in that: The process of determining where the fault distance is displayed in the fault analysis diagram is: According to the ratio of the fault distance to the actual line and the determined line length of the fault line, the display length of the fault distance in the fault analysis diagram is determined; According to the positional relationship between the fault distance and the actual line, the display length and the fault type, the coordinates of the starting display position and the ending display position of the identification element in the display area of ​​the fault analysis diagram are determined; According to the coordinates of the starting display position and the end display position, the identification graphic element is drawn in the fault analysis diagram and the fault analysis result is displayed in text. The size of the identification graphic element corresponds to the area of ​​the display region.

9. A visual monitoring device for fault distance measurement of railway traction network, characterized in that: It includes railway traction network fault distance measurement expert system, intelligent operation and maintenance system and database server, among which: The railway traction network fault location expert system includes: Data entry module, used to enter power supply arm information and fault information; Fault information monitoring module, used to monitor in real time and automatically obtain online captured fault information from the intelligent operation and maintenance system; A fault analysis module is used to perform fault distance analysis based on fault information and power supply arm information to obtain fault analysis results; A fault analysis diagram drawing module is used to construct a basic block diagram of a fault analysis diagram corresponding to a power supply arm, mark the power supply arm information and switch information contained in the fault information in the fault analysis diagram, locate the fault display position in the fault analysis diagram according to the fault analysis result, and mark the fault display position in the fault analysis diagram; The fault information source module is used to determine the source of the fault information. When the fault information is input by the data input module, the fault analysis diagram is sent to the fault display module for display; when the fault information is obtained from the intelligent operation and maintenance system, the fault analysis diagram is sent to the intelligent operation and maintenance system; A fault display module is used to display the fault analysis diagram; The intelligent operation and maintenance system is used to obtain fault information in real time when a fault occurs and store the fault information in the fault data table of the database server, and display the fault analysis diagram when it is received.

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