Fault detection method and device, computer equipment and storage medium
By acquiring fault data of feeder current in heavy-haul railway traction networks, calculating the effective value of the current, and measuring fault location, the problem of difficult fault location detection in fully parallel traction networks has been solved, achieving efficient fault location and safe train operation.
Patent Information
- Application Number
- CN202511183038.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-22
- Publication Date
- 2025-11-21
AI Technical Summary
Existing technologies are insufficient to accurately detect fault locations in heavy-haul railway traction networks, especially in fully parallel traction networks, where the asymmetry of impedance parameters between the upstream and downstream traction networks causes the current ratio method to fail.
By acquiring fault data of feeder current in the traction network, calculating the effective value of feeder current, and using current ratio calculation and fault location methods, the fault area and distance are determined, thereby locating the fault position.
It improves the efficiency of fault location, reduces the workload of fault finding and troubleshooting, ensures train operation safety, and saves operating and maintenance costs.
Smart Images
Figure CN120993111A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of electrified railway traction power supply, and in particular to a fault detection method and device, a computer device and a storage medium. BACKGROUND
[0002] The heavy-load direction of a heavy-load railway is generally from inland to the coast, and the power supply mode thereof is mainly a double-track direct power supply mode with a return line and an AT power supply mode. In order to improve the network voltage, the up and down traction networks are often connected in parallel in the middle and at the end of the section to form a full-parallel operation mode.
[0003] At present, for the traction network without a parallel reinforcement line, the up and down current ratio method is used for the parallel double-track direct power supply traction network at the end, and the cross-line current ratio method is used for the full-parallel direct power supply traction network. For the full-parallel traction network with a single-side parallel reinforcement line, the up and down traction network impedance parameters are asymmetric, so that the up and down currents cannot meet the proportional relationship under the condition that the up and down impedance parameters are symmetric, thereby making it difficult to accurately detect the fault position in the traction network. SUMMARY
[0004] Therefore, it is necessary to provide a fault detection method, device, computer device and storage medium capable of accurately detecting the fault position in the traction network in view of the above technical problems.
[0005] In a first aspect, the present application provides a fault detection method. The method comprises:
[0006] obtaining fault data of feeder current in a traction network;
[0007] determining a feeder current effective value corresponding to the feeder current in the traction network according to the fault data;
[0008] performing fault detection on the traction network according to the feeder current effective value to obtain a fault position of the traction network.
[0009] In one of the embodiments, performing fault detection on the traction network according to the feeder current effective value to obtain a fault position of the traction network comprises:
[0010] obtaining a fault area of the traction network;
[0011] performing fault ranging on the traction network according to the feeder current effective value and the fault area to obtain a traction network fault distance;
[0012] determining the fault position of the traction network according to the fault area and the traction network fault distance.
[0013] In one of the embodiments, the fault distance of the traction network is determined according to the effective value of the feeder current, including:
[0014] The current ratio of the effective value of the feeder current is calculated to obtain the feeder current ratio.
[0015] The product of the length of the section corresponding to the fault area and the feeder current ratio is taken as the fault distance of the traction network.
[0016] In one of the embodiments, the fault data includes: the first down feeder current corresponding to the traction substation, the second up feeder current corresponding to the traction substation, the third up and down contact feeder current corresponding to the switch station, and the fourth up and down contact feeder current corresponding to the partition.
[0017] In one of the embodiments, the effective value of the feeder current corresponding to the feeder current in the traction network is determined according to the fault data, including:
[0018] The target effective value of the feeder current in the effective value of the feeder current is determined according to the first down feeder current and the second up feeder current.
[0019] The absolute value of the third up and down contact feeder current is taken as the third effective value of the feeder current in the effective value of the feeder current.
[0020] The absolute value of the fourth up and down contact feeder current is taken as the fourth effective value of the feeder current in the effective value of the feeder current.
[0021] In one of the embodiments, the target effective value of the feeder current in the effective value of the feeder current is determined according to the first down feeder current and the second up feeder current, including:
[0022] The absolute value of the difference between the first down feeder current and the second up feeder current is calculated to obtain the candidate effective value of the feeder current.
[0023] Half of the value of the candidate effective value of the feeder current is taken as the target effective value of the feeder current in the effective value of the feeder current.
[0024] Secondly, the application also provides a fault detection device. The device includes:
[0025] The acquisition module is used to acquire the fault data of the feeder current in the traction network.
[0026] The determination module is used to determine the effective value of the feeder current corresponding to the feeder current in the traction network according to the fault data.
[0027] detecting a fault of the traction network according to the feeder current effective value.
[0028] In a third aspect, the present application provides a computer device. The computer device comprises a memory and a processor. The memory stores a computer program. The processor implements the following steps when executing the computer program:
[0029] obtaining fault data of feeder current in the traction network;
[0030] determining a feeder current effective value corresponding to the feeder current in the traction network according to the fault data;
[0031] detecting a fault of the traction network according to the feeder current effective value, to obtain a fault position of the traction network.
[0032] In a fourth aspect, the present application provides a computer readable storage medium. The computer readable storage medium stores a computer program. The computer program is executed by a processor to implement the following steps:
[0033] obtaining fault data of feeder current in the traction network;
[0034] determining a feeder current effective value corresponding to the feeder current in the traction network according to the fault data;
[0035] detecting a fault of the traction network according to the feeder current effective value, to obtain a fault position of the traction network.
[0036] In a fifth aspect, the present application provides a computer program product. The computer program product comprises a computer program. The computer program is executed by a processor to implement the following steps:
[0037] obtaining fault data of feeder current in the traction network;
[0038] determining a feeder current effective value corresponding to the feeder current in the traction network according to the fault data;
[0039] detecting a fault of the traction network according to the feeder current effective value, to obtain a fault position of the traction network.
[0040] The fault detection method, device, computer device and storage medium, by obtaining the fault data of the feeder current in the traction network, the feeder current effective value corresponding to the feeder current in the traction network is determined according to the fault data; then, the traction network is detected according to the feeder current effective value, and the fault position of the traction network is obtained. According to the above content, in the process of detecting the fault of the traction network, the actual situation of the traction network is obtained by obtaining the fault data of the feeder current, and then the feeder current effective value corresponding to the feeder current in the traction network is determined, and the traction network is detected according to the feeder current effective value, so as to improve the efficiency of the traction network fault positioning, greatly reduce the workload of the traction network fault finding and elimination, ensure the train running safety, and the application only needs to modify the program of the original fault ranging device, without adding a new fault ranging device, the ranging principle is simple and easy to realize, and the later operation and maintenance cost is greatly saved. BRIEF DESCRIPTION OF DRAWINGS
[0041] Figure 1 An application environment diagram of a fault detection method provided by the embodiment of the application is shown in the figure;
[0042] Figure 2 A flowchart of the first fault detection method provided by the embodiment of the application is shown in the figure;
[0043] Figure 3 A simplified circuit and current distribution diagram of the full-parallel direct power supply traction network are shown in the figure;
[0044] Figure 4 A flowchart of the second fault detection method provided by the embodiment of the application is shown in the figure;
[0045] Figure 5 A flowchart of the third fault detection method provided by the embodiment of the application is shown in the figure;
[0046] Figure 6 A fault ranging diagram of the traction substation-switching station section downward fault is shown in the figure;
[0047] Figure 7 A fault ranging diagram of the traction substation-switching station section upward fault is shown in the figure;
[0048] Figure 8 A fault ranging diagram of the switching station-partition substation section downward fault is shown in the figure;
[0049] Figure 9 A fault ranging diagram of the switching station-partition substation section upward fault is shown in the figure;
[0050] Figure 10 A structure block diagram of the fault detection device provided by the embodiment of the application is shown in the figure;
[0051] Figure 11 Fig. 1 is a schematic diagram of an internal structure of a computer device according to an embodiment. DETAILED DESCRIPTION
[0052] In order to make the purposes, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not intended to limit the present application.
[0053] The fault detection method provided by the embodiments of the present application can be applied to an application environment as shown in Figure 1 . The terminal 102 communicates with the server 104 through a network. The data storage system can store data required to be processed by the server 104. The data storage system can be integrated on the server 104, or placed on a cloud or other network server. By obtaining the fault data of the feeder current in the traction network, the feeder current effective value corresponding to the feeder current in the traction network is determined according to the fault data; then, the traction network is fault detected according to the feeder current effective value, and the fault position of the traction network is obtained. The terminal 102 can be, but is not limited to, various personal computers, notebook computers, smart phones, tablet computers, Internet of Things devices and portable wearable devices. The Internet of Things device can be a smart speaker, a smart television, a smart air conditioner, a smart vehicle-mounted device, etc. The portable wearable device can be a smart watch, a smart bracelet, a head-mounted device, etc. The server 104 can be implemented by an independent server or a server cluster composed of multiple servers.
[0054] In one embodiment, as shown in Figure 2 , a fault detection method is provided. Taking the server 104 in Figure 1 as an example, the method includes the following steps:
[0055] S201, obtaining fault data of a feeder current in a traction network.
[0056] It should be noted that the traction network is as shown in Figure 3 . The uplink overhead line is connected in parallel with the reinforced line in the overhead line, and the horizontal connection line is used in the switch station and the substation to connect the overhead line and the steel rail in uplink and downlink. In addition, the fault data includes: a first downlink feeder current corresponding to a traction substation, a second uplink feeder current corresponding to the traction substation, a third uplink and downlink connection feeder current corresponding to the switch station, and a fourth uplink and downlink connection feeder current corresponding to the substation.
[0057] Further, when the fault data of the feeder current in the traction network needs to be obtained, different fault distance measuring devices can be called respectively to obtain the fault data of the feeder current in the traction network.
[0058] In an embodiment of the present application, the fault location device can include, but is not limited to, a traction substation fault location device, an interval switch station fault location device, and a substation fault location device. Therefore, when the fault data of the feeder current in the traction network needs to be obtained, the following can be included: the traction substation fault location device collects the first downward feeder current corresponding to the traction substation and the second upward feeder current corresponding to the traction substation at the fault confirmation time; the interval switch station fault location device collects the third upward and downward interconnection feeder current corresponding to the switch station at the fault confirmation time; and the substation fault location device collects the fourth upward and downward interconnection feeder current corresponding to the substation at the fault confirmation time.
[0059] S202, according to the fault data, determining the feeder current effective value corresponding to the feeder current in the traction network.
[0060] It should be noted that when the feeder current effective value corresponding to the feeder current in the traction network needs to be determined according to the fault data, the following can be included: according to the first downward feeder current and the second upward feeder current, the target feeder current effective value in the feeder current effective value is determined; the absolute value of the third upward and downward interconnection feeder current is taken as the third feeder current effective value in the feeder current effective value; and the absolute value of the fourth upward and downward interconnection feeder current is taken as the fourth feeder current effective value in the feeder current effective value.
[0061] Further, when the target feeder current effective value in the feeder current effective value needs to be determined according to the first downward feeder current and the second upward feeder current, the following can be included: the absolute value of the difference between the first downward feeder current and the second upward feeder current is calculated to obtain a candidate feeder current effective value; and half of the value of the candidate feeder current effective value is taken as the target feeder current effective value in the feeder current effective value.
[0062] In an embodiment of the present application, when the target feeder current effective value needs to be determined, the following calculation formula can be referred to:
[0063]
[0064] wherein, I 12 refers to the target feeder current effective value; refers to the first downward feeder current; refers to the second upward feeder current.
[0065] In an embodiment of the present application, when the third feeder current effective value needs to be determined, the following can be included:
[0066]
[0067] wherein, I3 refers to the third up-and-down interconnection feeder line current; I3 refers to the third feeder line current effective value.
[0068] In an embodiment of the application, when it is necessary to determine the fourth feeder line current effective value, the following can be included:
[0069]
[0070] I4 refers to the fourth up-and-down interconnection feeder line current; I4 refers to the fourth feeder line current effective value.
[0071] S203, performing fault detection on the traction network according to the feeder line current effective value to obtain a fault position of the traction network.
[0072] It should be noted that when it is necessary to perform fault detection on the traction network according to the feeder line current effective value to obtain a fault position of the traction network, a fault area of the traction network can be obtained; fault ranging of the traction network is performed according to the feeder line current effective value and the fault area to obtain a fault distance of the traction network; and the fault position of the traction network is determined according to the fault area and the fault distance of the traction network.
[0073] The above fault detection method, by obtaining fault data of the feeder line current in the traction network, realizes determining the feeder line current effective value corresponding to the feeder line current in the traction network according to the fault data; and then, performing fault detection on the traction network according to the feeder line current effective value to obtain a fault position of the traction network. According to the above content, it can be known that in the process of performing fault detection on the traction network, by obtaining fault data of the feeder line current, the actual situation of the traction network is obtained, and then, by determining the feeder line current effective value corresponding to the feeder line current in the traction network, fault detection on the traction network according to the feeder line current effective value is realized, so as to improve the efficiency of traction network fault positioning, greatly reduce the work load of traction network fault finding and elimination, ensure the train running safety, and the application only needs to modify the program of the original fault ranging device, without adding a new fault ranging device, the ranging principle is simple and easy to realize, greatly saving the later operation and maintenance cost.
[0074] In an embodiment, as shown in Figure 4 when it is necessary to perform fault detection on the traction network according to the feeder line current effective value to obtain a fault position of the traction network, the following can be included:
[0075] S401, obtaining a fault area of the traction network.
[0076] It should be noted that the fault area of the traction network can be determined according to the specific situation of the traction network and the fault type of the traction network.
[0077] S402, performing fault ranging of the traction network according to the feeder line current effective value and the fault area to obtain a fault distance of the traction network.
[0078] It should be noted that when it is necessary to perform fault ranging on the traction network according to the feeder current effective value and the fault area, the following can be included: performing current ratio calculation on the feeder current effective value to obtain a feeder current ratio; and taking a product operation result of the section length corresponding to the fault area and the feeder current ratio as the traction network fault distance.
[0079] Further, when it is necessary to perform current ratio calculation on the feeder current effective value to obtain a feeder current ratio, the current ratio calculation method for the feeder current effective value can be determined according to the fault area, and then the feeder current ratio for different fault areas can be determined according to different current ratio calculation methods.
[0080] In an embodiment of the present application, when the fault area is the downline catenary of the traction substation-switching station section, the feeder current ratio can be determined according to the following calculation formula:
[0081]
[0082] wherein Z I and Z II are the unit impedances of the downline and upline traction networks respectively; I3 refers to the third feeder current effective value; I 12 refers to the target feeder current effective value; Q 11 refers to the feeder current ratio.
[0083] Further, when it is necessary to determine the traction network fault distance, Q 11 refers to the feeder current ratio, and the traction substation-switching station section length D1 is substituted into l1=Q 11 D1 to obtain the traction network fault distance l1.
[0084] In an embodiment of the present application, when the fault area is the upline catenary of the traction substation-switching station section, the feeder current ratio can be determined according to the following calculation formula:
[0085]
[0086] wherein Z I and Z II are the unit impedances of the downline and upline traction networks respectively; I3 refers to the third feeder current effective value; I 12 refers to the target feeder current effective value; Q 12 refers to the feeder current ratio.
[0087] Further, when it is necessary to determine the traction network fault distance, Q 12 refers to the feeder current ratio, and the traction substation-switching station section length D1 is substituted into l1=Q 12D1, get the traction network fault distance l1.
[0088] In an embodiment of the present application, when the fault area is the downline catenary segmented by the switch station-subarea, the feeder current ratio can be determined according to the following calculation formula:
[0089]
[0090] wherein, I3 refers to the third feeder current effective value; I4 refers to the fourth feeder current effective value; Q 21 refers to the feeder current ratio.
[0091] Further, when the traction network fault distance needs to be determined, Q 21 refers to the feeder current ratio and the traction substation-switch station segment length D2 is substituted into l2=Q 21 D2, get the traction network fault distance l2.
[0092] In an embodiment of the present application, when the fault area is the upline catenary segmented by the switch station-subarea, the feeder current ratio can be determined according to the following calculation formula:
[0093]
[0094] wherein, I3 refers to the third feeder current effective value; I4 refers to the fourth feeder current effective value; Q 22 refers to the feeder current ratio.
[0095] Further, when the traction network fault distance needs to be determined, Q 22 refers to the feeder current ratio and the traction substation-switch station segment length D2 is substituted into l2=Q 22 D2, get the traction network fault distance l2.
[0096] The above fault detection method, by obtaining the fault area of the traction network, realizes fault ranging of the traction network according to the feeder current effective value and the fault area, gets the traction network fault distance, and further determines the fault position of the traction network according to the fault area and the traction network fault distance, improves the efficiency of traction network fault positioning, greatly reduces the workload of traction network fault finding and elimination, and ensures the train running safety.
[0097] In an embodiment, as Figure 5 shown, when the fault position of the traction network needs to be determined, the following contents can be included:
[0098] S501, obtaining the fault data of the feeder current in the traction network.
[0099] S502, performing absolute value operation on the difference between the first downline feeder current and the second upline feeder current, to get the candidate feeder current effective value.
[0100] S503, take half of the candidate feeder current effective value as the target feeder current effective value in the feeder current effective value.
[0101] S504 takes the absolute value of the third uplink / downlink interconnection feeder current as the third feeder current effective value in the feeder current effective value.
[0102] S505 uses the absolute value of the fourth uplink / downlink interconnection feeder current as the fourth feeder current effective value in the feeder current effective value.
[0103] S506, Obtain the fault area of the traction network.
[0104] S507 calculates the current ratio of the effective value of the feeder current to obtain the feeder current ratio.
[0105] S508 calculates the traction network fault distance based on the product of the section length corresponding to the fault area and the feeder current ratio.
[0106] S509, determine the location of the fault in the traction network based on the fault area and the distance to the fault in the traction network.
[0107] In one embodiment, such as Figure 6 As shown, a short-circuit fault occurred at k1 on the downlink side of the traction substation-switching station section of the traction network. The fault location device of the traction substation collected the downlink and uplink feeder currents at the time of the fault. Calculate current The effective values of the uplink and downlink feeder currents at the time of the fault are collected by the fault location devices of the traction substation and the section switching station and the section substation.
[0108] A simulation model was established, and short-circuit points were set every kilometer in the downlink traction network of the traction substation-switching station section. The simulation data and results are shown in Table 1.
[0109]
[0110] In one embodiment, such as Figure 7 As shown, a short-circuit fault occurred at k2 on the uplink side of the traction substation-switching station section of the traction network. The fault location device of the traction substation collected the downlink and uplink feeder currents at the time of the fault. Calculate current The effective values of the uplink and downlink feeder currents at the time of the fault are collected by the fault location devices of the traction substation and the section switching station and the section substation.
[0111] A simulation model is established, and a short-circuit point is set every kilometer on the uplink traction network of the traction substation-switching station section. The simulation data and simulation results are shown in Table 2.
[0112] Table 2: Simulation data and simulation results
[0113]
[0114] In an embodiment, as shown in Figure 8 , a short-circuit fault occurs on the downlink side k3 of the switching station-substation section of the traction network, and the traction substation fault location device collects the downlink and uplink feeder currents at the fault time as The effective value of the current is calculated, and the traction substation fault location device collects the effective values of the uplink and downlink tie feeder currents at the fault time collected by the switching station and substation fault location devices in the section as I3, I4.
[0115] A simulation model is established, and a short-circuit point is set every kilometer on the downlink traction network of the switching station-substation section. The simulation data and simulation results are shown in Table 3.
[0116] Table 3: Simulation data and simulation results
[0117]
[0118] In an embodiment, as shown in Figure 9 , a short-circuit fault occurs on the uplink side k4 of the switching station-substation section of the traction network, and the traction substation fault location device collects the downlink and uplink feeder currents at the fault time as The effective value of the current is calculated, and the traction substation fault location device collects the effective values of the uplink and downlink tie feeder currents at the fault time collected by the switching station and substation fault location devices in the section as I3, I4.
[0119] A simulation model is established, and a short-circuit point is set every kilometer on the uplink traction network of the switching station-substation section. The simulation data and simulation results are shown in Table 4.
[0120]
[0121]
[0122] The above fault detection method realizes, by acquiring the fault data of the feeder current in the traction network, determining the feeder current effective value corresponding to the feeder current in the traction network according to the fault data, and then performing fault detection on the traction network according to the feeder current effective value, to obtain the fault position of the traction network. According to the above content, in the process of detecting the fault of the traction network, the actual situation of the traction network is acquired by acquiring the fault data of the feeder current, and then the feeder current effective value corresponding to the feeder current in the traction network is determined, so that the fault detection on the traction network according to the feeder current effective value is realized, thereby improving the efficiency of the traction network fault positioning, greatly reducing the workload of the traction network fault finding and elimination, ensuring the train running safety, and the application only needs to modify the program of the original fault ranging device without adding a new fault ranging device. The ranging principle is simple and easy to implement, which greatly saves the operation and maintenance cost in the later period.
[0123] It should be understood that, although each step in the flowchart involved in the above embodiments is displayed in sequence according to the arrow, these steps are not necessarily executed in the order indicated by the arrow. Unless otherwise specified herein, the execution of these steps is not strictly limited in sequence, and these steps can be executed in other orders. Moreover, at least part of the steps in the flowchart involved in the above embodiments can include multiple steps or stages, which are not necessarily executed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily sequential, but can be alternately executed with at least part of other steps or steps or stages in other steps.
[0124] Based on the same inventive concept, the embodiments of the application also provide a fault detection device for implementing the above-mentioned fault detection method. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme described in the above method, so the specific limitations in one or more fault detection device embodiments provided below can refer to the limitations of the fault detection method in the above text, which will not be repeated here.
[0125] In one embodiment, as shown in Figure 10 A fault detection device is provided, comprising: an acquisition module 10, a determination module 20 and a detection module 30, wherein:
[0126] The acquisition module 10 is configured to acquire fault data of a feeder current in a traction network.
[0127] The determination module 20 is configured to determine a feeder current effective value corresponding to the feeder current in the traction network according to the fault data.
[0128] The detection module 30 is configured to detect a fault of the traction network according to the feeder current effective values, and obtain a fault position of the traction network.
[0129] In an embodiment, the fault region of the traction network is obtained;
[0130] The fault distance of the traction network is obtained according to the feeder current effective values and the fault region.
[0131] The fault position of the traction network is determined according to the fault region and the fault distance of the traction network.
[0132] In an embodiment, the current ratio of the feeder current effective values is calculated, and the feeder current ratio is obtained.
[0133] The product of the length of the section corresponding to the fault region and the feeder current ratio is taken as the fault distance of the traction network.
[0134] In an embodiment, the fault data includes a first down feeder current corresponding to a traction substation, a second up feeder current corresponding to the traction substation, a third up-down tie feeder current corresponding to a switch station, and a fourth up-down tie feeder current corresponding to a partition substation.
[0135] In an embodiment, the target feeder current effective value in the feeder current effective values is determined according to the first down feeder current and the second up feeder current.
[0136] The absolute value of the third up-down tie feeder current is taken as the third feeder current effective value in the feeder current effective values.
[0137] The absolute value of the fourth up-down tie feeder current is taken as the fourth feeder current effective value in the feeder current effective values.
[0138] In an embodiment, the absolute value of the difference between the first down feeder current and the second up feeder current is calculated, and a candidate feeder current effective value is obtained.
[0139] Half of the value of the candidate feeder current effective value is taken as the target feeder current effective value in the feeder current effective values.
[0140] The above fault detection device realizes, by acquiring the fault data of the feeder current in the traction network, determining the effective value of the feeder current corresponding to the feeder current in the traction network according to the fault data, and then performing fault detection on the traction network according to the effective value of the feeder current to obtain the fault position of the traction network. According to the above content, it can be known that, in the process of detecting the fault of the traction network, the actual situation of the traction network is acquired by acquiring the fault data of the feeder current, and then the effective value of the feeder current corresponding to the feeder current in the traction network is determined, so as to realize the fault detection on the traction network according to the effective value of the feeder current, thereby improving the efficiency of the fault positioning of the traction network, greatly reducing the workload of the fault finding and elimination of the traction network, ensuring the driving safety of the train, and the program of the original fault ranging device only needs to be modified, without the need of adding a new fault ranging device, the ranging principle is simple and easy to realize, and the operation and maintenance cost in the later period is greatly saved.
[0141] Each module in the above fault detection device can be realized by software, hardware and a combination thereof in whole or in part. The above modules can be embedded in or independent of the processor in the computer device in hardware form, or can be stored in the memory in the computer device in software form, so as to be called and executed by the processor to perform the operations corresponding to the above modules.
[0142] In one embodiment, a computer device, which can be a terminal, has an internal structure diagram as shown in Figure 11 The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operating system and the computer program in the non-volatile storage medium to run. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals in a wired or wireless manner. The wireless manner can be realized by WIFI, mobile cellular network, NFC (near field communication) or other technologies. The computer program is executed by the processor to realize a fault detection method. The display unit of the computer device is used to form a visually visible picture, which can be a display screen, a projection device or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen. The input device of the computer device can be a touch layer overlaid on the display screen, or can be a key, trackball or touchpad arranged on the shell of the computer device, or can be an external keyboard, touchpad or mouse, etc.
[0143] Those skilled in the art can understand that, Figure 11 The structure shown in the figure is only a block diagram of part of the structure related to the scheme of the present application, and does not constitute a limitation on the computer device to which the scheme of the present application is applied. The specific computer device can include more or fewer components than those shown in the figure, or combine certain components, or have a different arrangement of components.
[0144] In one embodiment, a computer device is provided, comprising a memory and a processor, the memory storing a computer program, and the processor implementing the following steps when executing the computer program:
[0145] Obtaining fault data of feeder current in a traction network;
[0146] According to the fault data, determining the effective value of the feeder current corresponding to the feeder current in the traction network;
[0147] According to the effective value of the feeder current, detecting the fault of the traction network to obtain the fault location of the traction network.
[0148] In one embodiment, the processor further implements the following steps when executing the computer program:
[0149] Obtaining a fault area of the traction network;
[0150] According to the effective value of the feeder current and the fault area, performing fault ranging on the traction network to obtain a fault distance of the traction network;
[0151] According to the fault area and the fault distance of the traction network, determining the fault location of the traction network.
[0152] In one embodiment, the processor further implements the following steps when executing the computer program:
[0153] Performing current ratio calculation on the effective value of the feeder current to obtain a feeder current ratio;
[0154] According to the product operation result of the length of the section corresponding to the fault area and the feeder current ratio, as the fault distance of the traction network.
[0155] In one embodiment, the processor further implements the following steps when executing the computer program:
[0156] The fault data includes: a first downlink feeder current corresponding to a traction substation, a second uplink feeder current corresponding to the traction substation, a third uplink and downlink tie feeder current corresponding to a switch station, and a fourth uplink and downlink tie feeder current corresponding to a partition substation.
[0157] In one embodiment, the processor further implements the following steps when executing the computer program:
[0158] determining a target feeder current effective value among the feeder current effective values according to the first down feeder current and the second up feeder current;
[0159] taking an absolute value of the third up and down tie feeder current as a third feeder current effective value among the feeder current effective values;
[0160] taking an absolute value of the fourth up and down tie feeder current as a fourth feeder current effective value among the feeder current effective values.
[0161] In one embodiment, the processor, when executing the computer program, also implements the following steps:
[0162] performing an absolute value operation on a difference between the first down feeder current and the second up feeder current to obtain a candidate feeder current effective value;
[0163] taking half of the value of the candidate feeder current effective value as the target feeder current effective value among the feeder current effective values.
[0164] In one embodiment, a computer readable storage medium is provided, and the computer readable storage medium has stored thereon a computer program, and the computer program, when executed by a processor, implements the following steps:
[0165] obtaining fault data of feeder currents in a traction network;
[0166] determining feeder current effective values corresponding to the feeder currents in the traction network according to the fault data;
[0167] performing fault detection on the traction network according to the feeder current effective values to obtain a fault location of the traction network.
[0168] In one embodiment, the computer program, when executed by the processor, also implements the following steps:
[0169] obtaining a fault area of the traction network;
[0170] performing fault ranging on the traction network according to the feeder current effective values and the fault area to obtain a fault distance of the traction network;
[0171] determining the fault location of the traction network according to the fault area and the fault distance of the traction network.
[0172] In one embodiment, the computer program, when executed by the processor, also implements the following steps:
[0173] performing current ratio calculation on the feeder current effective values to obtain feeder current ratios;
[0174] taking a product operation result of a section length corresponding to the fault area and the feeder current ratio as the fault distance of the traction network.
[0175] In one embodiment, the computer program, which is executed by the processor, further implements the following steps:
[0176] The fault data comprises: a first down-line feeder current corresponding to the traction substation, a second up-line feeder current corresponding to the traction substation, a third up-down tie feeder current corresponding to the switch station, and a fourth up-down tie feeder current corresponding to the partition substation.
[0177] In one embodiment, the computer program, which is executed by the processor, further implements the following steps:
[0178] According to the first down-line feeder current and the second up-line feeder current, a target feeder current effective value in the feeder current effective values is determined;
[0179] An absolute value of the third up-down tie feeder current is taken as a third feeder current effective value in the feeder current effective values;
[0180] An absolute value of the fourth up-down tie feeder current is taken as a fourth feeder current effective value in the feeder current effective values.
[0181] In one embodiment, the computer program, which is executed by the processor, further implements the following steps:
[0182] An absolute value of a difference between the first down-line feeder current and the second up-line feeder current is calculated to obtain a candidate feeder current effective value;
[0183] Half of a value of the candidate feeder current effective value is taken as the target feeder current effective value in the feeder current effective values.
[0184] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:
[0185] Obtaining fault data of feeder currents in a traction network;
[0186] According to the fault data, feeder current effective values corresponding to the feeder currents in the traction network are determined;
[0187] According to the feeder current effective values, fault detection is performed on the traction network to obtain a fault position of the traction network.
[0188] In one embodiment, the computer program, which is executed by the processor, further implements the following steps:
[0189] Obtaining a fault area of the traction network;
[0190] According to the feeder current effective values and the fault area, fault ranging is performed on the traction network to obtain a fault distance of the traction network;
[0191] According to the fault area and the fault distance of the traction network, a fault position of the traction network is determined.
[0192] In one embodiment, the computer program, when executed by the processor, further implements the following steps:
[0193] The current ratio is calculated by the current effective value of the feeder, and the feeder current ratio is obtained;
[0194] According to the product operation result of the length of the section corresponding to the fault area and the feeder current ratio, the traction network fault distance is obtained.
[0195] In one embodiment, the computer program, when executed by the processor, further implements the following steps:
[0196] The fault data includes: the first down feeder current corresponding to the traction substation, the second up feeder current corresponding to the traction substation, the third up and down contact feeder current corresponding to the switch station, and the fourth up and down contact feeder current corresponding to the partition station.
[0197] In one embodiment, the computer program, when executed by the processor, further implements the following steps:
[0198] According to the first down feeder current and the second up feeder current, the target feeder current effective value in the feeder current effective value is determined;
[0199] The absolute value of the third up and down contact feeder current is taken as the third feeder current effective value in the feeder current effective value;
[0200] The absolute value of the fourth up and down contact feeder current is taken as the fourth feeder current effective value in the feeder current effective value.
[0201] In one embodiment, the computer program, when executed by the processor, further implements the following steps:
[0202] The absolute value of the difference between the first down feeder current and the second up feeder current is calculated to obtain the candidate feeder current effective value;
[0203] Half of the value of the candidate feeder current effective value is taken as the target feeder current effective value in the feeder current effective value.
[0204] It should be noted that the user information (including but not limited to user equipment information, user personal information, etc.) and data (including but not limited to data for analysis, stored data, displayed data, etc.) involved in the present application are all information and data authorized by the user or authorized by all parties, and the collection, use and processing of related data need to comply with relevant national and regional laws, regulations and standards.
[0205] Those skilled in the art can understand that all or part of the processes in the above-mentioned embodiment methods can be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer readable storage medium, and when the computer program is executed, the processes of the above-mentioned embodiments of the methods can be included. Any reference to memory, database or other medium used in the embodiments provided in the present application can include at least one of non-volatile and volatile memory. The non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical storage, high-density embedded non-volatile memory, resistive memory (ReRAM), magnetoresistive random access memory (MRAM), ferroelectric memory (FRAM), phase change memory (PCM), graphene memory, etc. The volatile memory can include random access memory (RAM) or external cache memory, etc. As an illustration but not limitation, the RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM), etc. The database involved in the embodiments provided in the present application can include at least one of a relational database and a non-relational database. The non-relational database can include a distributed database based on a block chain, etc., without being limited thereto. The processor involved in the embodiments provided in the present application can be a general-purpose processor, a central processing unit, a graphics processing unit, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, etc., without being limited thereto.
[0206] Any combination of the technical features of the above embodiments can be made. In order to make the description simple, all possible combinations of the technical features in the above embodiments are not described, however, as long as the combination of the technical features does not exist, it should be considered as the scope of the present application.
[0207] The above embodiments only express several implementation manners of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of protection of the present application. Therefore, the protection scope of the present application should be subject to the appended claims.
Claims
1. A fault detection method, characterized in that, The method includes: Obtain fault data of feeder current in the traction network; Based on the fault data, determine the effective value of the feeder current corresponding to the feeder current in the traction network; The fault location of the traction network is obtained by performing fault detection on the traction network based on the effective value of the feeder current.
2. The method according to claim 1, characterized in that, The step of detecting faults in the traction network based on the effective value of the feeder current to obtain the fault location of the traction network includes: Obtain the fault area of the traction network; Based on the effective value of the feeder current and the fault area, the fault distance of the traction network is obtained by fault measurement of the traction network. The location of the fault in the traction network is determined based on the fault area and the distance to the fault in the traction network.
3. The method according to claim 2, characterized in that, The step of measuring the fault distance of the traction network based on the effective value of the feeder current to obtain the fault distance of the traction network includes: The feeder current ratio is obtained by calculating the current ratio of the effective value of the feeder current. The product of the section length corresponding to the fault area and the feeder current ratio is used as the fault distance of the traction network.
4. The method according to claim 1, characterized in that, The fault data includes: the first down-line feeder current corresponding to the traction substation, the second up-line feeder current corresponding to the traction substation, the third up-line and down-line tie feeder current corresponding to the switching station, and the fourth up-line and down-line tie feeder current corresponding to the section.
5. The method according to claim 4, characterized in that, The step of determining the effective value of the feeder current corresponding to the feeder current in the traction network based on the fault data includes: The target effective value of the feeder current is determined based on the first downlink feeder current and the second uplink feeder current. The absolute value of the third uplink / downlink interconnection feeder current is taken as the third effective value of the feeder current in the effective value of the feeder current. The absolute value of the fourth uplink / downlink interconnection feeder current is taken as the fourth feeder current effective value in the feeder current effective value.
6. The method according to claim 5, characterized in that, The step of determining the target effective value of the feeder current based on the first downlink feeder current and the second uplink feeder current includes: The absolute value of the difference between the first downlink feeder current and the second uplink feeder current is calculated to obtain the effective value of the candidate feeder current. Half of the candidate feeder current effective value is taken as the target feeder current effective value among the feeder current effective values.
7. A fault detection device, characterized in that, The device includes: The acquisition module is used to acquire fault data of feeder current in the traction network; The determination module is used to determine the effective value of the feeder current corresponding to the feeder current in the traction network based on the fault data. The detection module is used to detect faults in the traction network based on the effective value of the feeder current, and to obtain the fault location of the traction network.
8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.
10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 6.