Line fault positioning method, system and device and storage medium

Abstract

The invention provides a line fault positioning method, system and device and a storage medium, relates to the technical field of current collection line monitoring and is used for realizing fault positioning in a tail end area of a current collection line, the method is applied to control equipment in the line fault positioning system, and the line fault positioning system further comprises a traveling wave injection device. The method comprises the following steps: a control device obtains a first moment when a traveling wave injection device injects a traveling wave signal at the tail end of a current collection line and a second moment when the traveling wave injection device collects a reflected wave; furthermore, the control device determines a target distance between the fault point and the tail end of the current collection line according to the first moment, the second moment and the traveling wave speed of the traveling wave signal, and the target distance is used for representing the position of the fault point.

Description

Technical Field

[0001] The present application relates to the technical field of collector line monitoring, and in particular to a line fault location method, system, device and storage medium. Background Art

[0002] Collector lines are the lines used to collect and transmit electrical energy within a power system. They typically gather the energy generated by multiple power generation units (such as photovoltaic power generation equipment and wind turbines) to a centralized point, where it is then transmitted to the power grid or load center via transmission lines. To ensure the safe and stable operation of collector lines, condition monitoring and fault location are typically performed to promptly identify and address potential problems and faults. Accurately locating collector line faults is crucial, as collector line faults can quickly lead to major power safety incidents.

[0003] Related technologies primarily use traveling wave positioning to locate collector line faults, using traveling wave signals collected by distributed traveling wave detection devices along the line. However, due to total reflection at the end of the collector line, the traveling wave current cannot be detected, making it impossible to detect and locate faults in this region. This creates a blind spot at the end of the collector line. Currently, after a fault is identified at the end of the collector line, maintenance personnel can only perform blind patrols to locate the fault, which is inefficient. Summary of the Invention

[0004] The present application proposes a line fault location method, system, device and storage medium for locating faults in the terminal area of a collector line.

[0005] In order to achieve the above objectives, this application adopts the following technical solutions:

[0006] In a first aspect, a line fault location method is provided. The method is applied to a control device in a line fault location system, wherein the line fault location system also includes a traveling wave injection device. The method comprises: the control device obtains a first moment when the traveling wave injection device injects a traveling wave signal at the end of a collector line, and a second moment when the traveling wave injection device collects a reflected wave. Furthermore, the control device determines a target distance between the fault point and the end of the collector line based on the first moment, the second moment, and the traveling wave velocity of the traveling wave signal. The target distance is used to represent the location of the fault point.

[0007] In a possible design, the line fault location system further includes a plurality of traveling wave detection devices deployed on the collector line, and the method further includes: determining a first distance and a second distance, where the first distance is the distance between the first traveling wave detection device and the end of the collector line, and the second distance is the distance between the first traveling wave detection device and the fault point, and the first traveling wave detection device is the first traveling wave detection device among the plurality of traveling wave detection devices to collect the traveling wave signal; updating the target distance according to the first distance and the second distance.

[0008] In a possible design, determining the first distance includes: obtaining the third moment of the traveling wave signal collected by the first traveling wave detection device; determining the first distance according to the first moment, the third moment, and the traveling wave speed.

[0009] In a possible design, determining the second distance includes: obtaining a fourth moment and a fifth moment, where the fourth moment is the moment when the first traveling wave detection device collects the initial traveling wave zero-mode component, and the fifth moment is the moment when the first traveling wave detection device collects the initial traveling wave line-mode component; determining the second distance according to the zero-mode wave speed, the line-mode wave speed, the fourth moment, and the fifth moment.

[0010] In a possible design, updating the target distance according to the first distance and the second distance includes: determining the difference between the first distance and the second distance as the third distance; determining the average value of the third distance and the target distance as the updated target distance.

[0011] In a possible design, the above line fault location method further includes: after determining that there is a fault in the end area of the collector line, controlling the traveling wave injection device to inject a traveling wave signal.

[0012] In a second aspect, a line fault location system is provided, including a control device and a traveling wave injection device, and the traveling wave injection device is deployed at the end of the collector line. The control device sends a control instruction to the traveling wave injection device, and the control instruction is used to instruct the traveling wave injection device to inject a traveling wave signal. The traveling wave injection device responds to the control instruction, injects a traveling wave signal at the end of the collector line, and sends the first moment when the traveling wave signal is injected and the second moment when the reflected wave is collected to the control device. The control device determines the target distance between the fault point and the end of the collector line according to the first moment, the second moment, and the traveling wave speed of the traveling wave signal, and the target distance is used to characterize the position of the fault point.

[0013] In a possible design, the line fault location system further includes a plurality of traveling wave detection devices deployed on the collector line. The first traveling wave detection device sends the third moment, the fourth moment, and the fifth moment to the control device. The first traveling wave detection device is the first traveling wave detection device among the plurality of traveling wave detection devices to collect the traveling wave signal. The third moment is the moment when the first traveling wave detection device collects the traveling wave signal. The fourth moment is the moment when the first traveling wave detection device collects the initial traveling wave zero-mode component. The fifth moment is the moment when the first traveling wave detection device collects the initial traveling wave line-mode component. The control device determines a first distance according to the first moment, the third moment, and the traveling wave velocity. The first distance is the distance between the first traveling wave detection device and the end of the collector line. The control device determines a second distance according to the zero-mode wave velocity, the line-mode wave velocity, the fourth moment, and the fifth moment. The second distance is the distance between the first traveling wave detection device and the fault point. The control device updates the target distance according to the first distance and the second distance.

[0014] In a third aspect, a line fault location device is provided, which is deployed in a control device in a line fault location system. The line fault location system further includes a traveling wave injection device. The line fault location device includes an acquisition unit and a determination unit. The acquisition unit is configured to acquire a first moment when the traveling wave injection device injects a traveling wave signal at the end of the collector line, and a second moment when the traveling wave injection device collects a reflected wave. The determination unit is configured to determine a target distance between the fault point and the end of the collector line according to the first moment, the second moment, and the traveling wave velocity of the traveling wave signal. The target distance is used to characterize the position of the fault point.

[0015] In a possible design, the line fault location device further includes a processing unit. The determination unit is further configured to determine a first distance and a second distance. The first distance is the distance between the first traveling wave detection device and the end of the collector line. The second distance is the distance between the first traveling wave detection device and the fault point. The first traveling wave detection device is the first traveling wave detection device among the plurality of traveling wave detection devices to collect the traveling wave signal. The processing unit is configured to update the target distance according to the first distance and the second distance.

[0016] In a possible design, the determination unit is specifically configured to acquire a third moment of the traveling wave signal collected by the first traveling wave detection device; and determine the first distance according to the first moment, the third moment, and the traveling wave velocity.

[0017] In one possible design, the determination unit is specifically used to obtain a fourth moment and a fifth moment, where the fourth moment is the moment when the first traveling wave detection device collects the initial traveling wave zero-mode component, and the fifth moment is the moment when the first traveling wave detection device collects the initial traveling wave line-mode component; and the second distance is determined based on the zero-mode wave velocity, the line-mode wave velocity, the fourth moment, and the fifth moment.

[0018] In one possible design, the processing unit is specifically used to determine the difference between the first distance and the second distance as the third distance; and determine the average value of the third distance and the target distance as the updated target distance.

[0019] In a possible design, the processing unit is further configured to control the traveling wave injection device to inject a traveling wave signal after determining that a fault exists in the terminal area of the collector line.

[0020] In a fourth aspect, a computer-readable storage medium is provided, in which instructions are stored. When the instructions are executed on a control device, the control device executes the line fault location method provided in the first aspect or any possible design thereof.

[0021] In the line fault location method provided in the present application, the traveling wave injection device is controlled to inject a traveling wave signal at the end of the collector line. The first moment when the traveling wave injection device injects the traveling wave signal and the second moment when the reflected wave is collected can determine the time required for the reflected wave returned from the fault point after the traveling wave signal is emitted from the end of the collector line to reach the traveling wave injection device. Further, the target distance between the fault point and the end of the collector line can be calculated and determined based on the traveling wave velocity of the traveling wave signal and the time length, thereby realizing fault location in the end area of the collector line without the need for blind patrol by operation and maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram of the structure of a line fault location system provided in an embodiment of the present application;

[0023] Figure 2 A schematic diagram of a line fault location method provided in an embodiment of the present application Figure 1 ;

[0024] Figure 3 A schematic diagram of a line fault location method provided in an embodiment of the present application Figure 2 ;

[0025] Figure 4 A schematic diagram of a position relationship provided in an embodiment of the present application;

[0026] Figure 5 A schematic structural diagram of a line fault locating device provided in an embodiment of the present application;

[0027] Figure 6 A schematic structural diagram of a line fault locating device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0029] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0030] In the description of this application, unless otherwise specified, " / " means "or", for example, A / B can mean A or B. "And / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, "at least one" and "a plurality of" refer to two or more. Words such as "first" and "second" do not limit the quantity and execution order, and words such as "first" and "second" do not limit them to be different.

[0031] Related technologies primarily use traveling wave positioning to locate collector line faults, using traveling wave signals collected by distributed traveling wave detection devices along the line. However, due to total reflection at the end of the collector line, the traveling wave current cannot be detected, making it impossible to detect and locate faults in this region. This creates a blind spot at the end of the collector line. Currently, after a fault is identified at the end of the collector line, maintenance personnel can only perform blind patrols to locate the fault, which is inefficient.

[0032] To address the aforementioned issues, this application proposes a line fault location method, system, device, and storage medium. The line fault location method is applied to a control device within the line fault location system, which also includes a traveling wave injection device. The method comprises: the control device obtaining a first moment when the traveling wave injection device injects a traveling wave signal at the end of the collector line, and a second moment when the traveling wave injection device captures the reflected wave. Furthermore, the control device determines a target distance between the fault point and the end of the collector line based on the first and second moments and the traveling wave velocity of the traveling wave signal. The target distance is used to characterize the location of the fault point.

[0033] In this way, in the line fault location method provided by this application, the control traveling wave injection device injects a traveling wave signal at the end of the collector line. By the first moment when the traveling wave injection device injects the traveling wave signal and the second moment when the reflected wave is collected, it is possible to determine the time required for the reflected wave to return from the fault point after the traveling wave signal is sent from the end of the collector line and reach the traveling wave injection device. Further, based on the traveling wave speed of the traveling wave signal and this time duration, the target distance between the fault point and the end of the collector line can be calculated and determined, so that the fault location in the end area of the collector line can be achieved without the need for maintenance personnel to blindly patrol.

[0034] Figure 1 shows a line fault location system, and the line fault location method provided by the embodiments of this application can be applied to a line fault location system as Figure 1 shown, for realizing the fault location in the end area of the collector line. As Figure 1 shown, the line fault location system 10 includes a control device 11, a traveling wave injection device 12, and a plurality of traveling wave detection devices 13.

[0035] Among them, the control device 11 is respectively connected to the traveling wave injection device 12 and the plurality of traveling wave detection devices 13. In this connection relationship, a wired connection or a wireless connection can be adopted. The traveling wave injection device 12 is deployed at the end of the collector line, and the plurality of traveling wave detection devices 13 are distributedly deployed on the collector line.

[0036] The control device 11 is used to send a control instruction to the traveling wave injection device 12.

[0037] Among them, the control instruction is used to instruct the traveling wave injection device 12 to inject a traveling wave signal.

[0038] The traveling wave injection device 12 is used to inject a traveling wave signal at the end of the collector line in response to the control instruction.

[0039] The traveling wave injection device 12 is further used to send the first moment when the traveling wave signal is injected and the second moment when the reflected wave is collected to the control device 11;

[0040] The control device 11 is used to determine the target distance between the fault point and the end of the collector line according to the first moment, the second moment, and the traveling wave speed of the traveling wave signal.

[0041] Among them, the target distance is used to characterize the position of the fault point.

[0042] The first traveling wave detection device 13 is used to send the third moment, the fourth moment, and the fifth moment to the control device 11.

[0043] Among them, the first traveling wave detection device 13 is the first traveling wave detection device 13 among multiple traveling wave detection devices 13 to collect the traveling wave signal; the third moment is the moment when the first traveling wave detection device 13 collects the traveling wave signal, the fourth moment is the moment when the first traveling wave detection device 13 collects the initial traveling wave zero mode component, and the fifth moment is the moment when the first traveling wave detection device 13 collects the initial traveling wave line mode component.

[0044] The control device 11 is further configured to determine a first distance according to the third moment and the speed of the traveling wave, where the first distance is the distance between the first traveling wave detection device 13 and the end of the collector line.

[0045] The control device 11 is further configured to determine a second distance according to the zero mode wave velocity, the line mode wave velocity, the fourth moment and the fifth moment, where the second distance is the distance between the first traveling wave detection device 13 and the fault point.

[0046] The control device 11 is further configured to update the target distance according to the first distance and the second distance.

[0047] Figure 2 FIG. 1 is a flow chart of a line fault location method according to some exemplary embodiments. In some embodiments, the line fault location method can be applied to Figure 1 The control device 11 in the line fault location system 10 is shown. In the following, the line fault location method is described by taking the line fault location method applied to the control device 11 as an example.

[0048] like Figure 2 As shown, the line fault locating method provided in the embodiment of the present application includes the following S201-S202.

[0049] S201. The control device obtains the first moment when the traveling wave injection device injects a traveling wave signal at the end of the collector line, and the second moment when the traveling wave injection device collects a reflected wave.

[0050] It should be noted that the traveling wave injection device is deployed at the end of the collector line, so the traveling wave injection device can inject the traveling wave signal at the end of the collector line.

[0051] As a possible implementation, after injecting the traveling wave signal, the traveling wave injection device sends the injection time (i.e., the first time) to the control device. Furthermore, the traveling wave injected by the traveling wave injection device propagates along the collector line, passes through the fault point, and forms a reflected wave that travels back toward the end of the collector line. After collecting the reflected wave, the traveling wave injection device sends the collection time (i.e., the second time) to the control device.

[0052] Correspondingly, the control device receives the first moment and the second moment sent by the traveling wave injection device respectively.

[0053] In some embodiments, after determining that a fault exists in the terminal area of the collector line, the control device controls the traveling wave injection device to inject a traveling wave signal.

[0054] The control device determines whether there is a fault in the terminal area of the collector line by:

[0055] The control device uses a traveling wave location method based on multiple traveling wave detection devices to determine whether the fault is located in the terminal area. For example, if the control device can accurately locate the fault location, the fault is determined to be in the non-terminal area. If the traveling wave location method cannot accurately locate the fault, the fault is determined to be in the terminal area.

[0056] Optionally, the control device controls the traveling wave injection device to inject the traveling wave signal by sending a control instruction for instructing the traveling wave injection device to inject the traveling wave signal.

[0057] S202: The control device determines a target distance between the fault point and the end of the collector line according to the first moment, the second moment, and the traveling wave velocity of the traveling wave signal.

[0058] The target distance is used to represent the location of the fault point.

[0059] As one possible implementation, after obtaining the first and second moments, the control device can determine, based on the first and second moments, the duration from the start of injection of the traveling wave signal injected by the traveling wave injection device until the reflected wave, transmitted back from the fault point, reaches the end of the collector line. This is equivalent to twice the time required for the traveling wave signal to travel from the end of the collector line to the fault point. Furthermore, based on this duration and the traveling wave velocity of the traveling wave signal, the control device can calculate the target distance between the fault point and the end of the collector line.

[0060] Exemplarily, the control device may calculate the target distance according to the following formula.

[0061] x=[(t2-t1)*V] / 2

[0062] Where x is the target distance, t1 is the first moment, t2 is the second moment, and V is the velocity of the injected traveling wave.

[0063] In one design, in order to improve the accuracy of fault location, the line fault location method provided in the embodiment of the present application is as follows: Figure 3 As shown, it also includes S301-S303.

[0064] S301: A control device determines a first distance.

[0065] Wherein, the first distance is the distance between the first traveling wave detection device and the end of the collector line, and the first traveling wave detection device is the first traveling wave detection device among multiple traveling wave detection devices to collect the traveling wave signal.

[0066] As a possible implementation, the traveling wave signal injected by the traveling wave injection device continues to be transmitted after passing through the fault point. When passing through the first traveling wave detection device, the first traveling wave detection device sends the third moment when the traveling wave signal is collected to the control device.

[0067] Correspondingly, the control device obtains the third moment when the first traveling wave detection device collects the traveling wave signal. Further, the control device calculates the first distance according to the first moment, the third moment, and the traveling wave velocity.

[0068] Exemplarily, the control device can calculate the first distance by using the following formula.

[0069] L = V(t3 - t1)

[0070] Wherein, L is the first distance, V is the traveling wave velocity of the traveling wave signal, t1 is the first moment, and t3 is the third moment.

[0071] In some embodiments, a mapping relationship between the identifier of the traveling wave detection device and the distance to the end of the collector line is pre-stored in the control device. The traveling wave detection device is configured to send the identifier to the control device after collecting the traveling wave signal.

[0072] After receiving the identifier sent by the first traveling wave detection device, the control device queries the mapping relationship based on the identifier of the first traveling wave detection device to determine the distance between the first traveling wave detection device and the end of the collector line.

[0073] S302. The control device determines the second distance.

[0074] Wherein, the second distance is the distance between the first traveling wave detection device and the fault point.

[0075] As a possible implementation, after a fault occurs on the collector line, a traveling wave zero-mode component and a traveling wave line-mode component will be formed at the fault point and transmitted on the collector line. Therefore, the first traveling wave detection device can collect the traveling wave zero-mode component and the traveling wave line-mode component.

[0076] The first traveling wave detection device determines the moment when the initial traveling wave zero-mode component is collected as the fourth moment and sends the fourth moment to the control device; the first traveling wave detection device determines the moment when the initial traveling wave line-mode component is collected as the fifth moment and sends the fifth moment to the control device.

[0077] Correspondingly, the control device obtains the fourth moment and the fifth moment. Further, the control device calculates and determines the second distance according to the fourth moment, the fifth moment, the zero-mode wave velocity, and the line-mode wave velocity.

[0078] Exemplarily, the control device can calculate the second distance according to the following formula.

[0079] La = v0(t4 - t)

[0080] La = v1(t5 - t)

[0081] By combining the above two equations, we can get:

[0082] La = [v0 * v1 / (v0 - v1)] * (t4 - t5)

[0083] Among them, La is the second distance, v0 is the zero-mode wave velocity, v1 is the line-mode wave velocity, t4 is the fourth moment, t5 is the fifth moment, and t is the transmission moment of the assumed initial traveling wave zero-mode component and the initial traveling wave line-mode component.

[0084] In some embodiments, the embodiment of the present application further provides a method for determining the second distance.

[0085] Among them, it is assumed that there is a second traveling wave detection device at the end of the collector line. The second traveling wave detection device collects the initial traveling wave zero-mode component at the sixth moment and the initial traveling wave line-mode component at the seventh moment; the time required for the traveling wave zero-mode component to pass through the collector line of the first distance is the first time duration, and the time required for the traveling wave line-mode component to pass through the collector line of the first distance is the second time duration.

[0086] According to the above assumed data and the fourth moment and the fifth moment collected by the first traveling wave detection device, the following formula can be obtained:

[0087]

[0088] Since:

[0089]

[0090] Then:

[0091]

[0092] Among them, L is the first distance, La is the second distance, Lb is the distance between the fault point and the end of the collector line, v0 is the zero-mode wave velocity, v1 is the line-mode wave velocity, t A0 is the fourth moment, t A1 is the fifth moment, t B0 is the sixth moment, t B1 is the seventh moment, t A is the first time duration, tB For the second duration.

[0093] S303: The control device updates the target distance according to the first distance and the second distance.

[0094] As a possible implementation, the control device calculates the difference between the first distance and the second distance and determines the difference as the third distance. Further, the control device calculates an average value of the third distance and the target distance and determines the calculated average value as the updated target distance.

[0095] In some embodiments, as Figure 4 As shown, the traveling wave injection device is located at Figure 4 At point B, the distance between the traveling wave injection device and the fault point C is x. Figure 4 Point A is the first traveling wave detection device, the distance between the first traveling wave detection device and the fault point C is La, and the distance between the first traveling wave detection device and the end B of the collector line is L.

[0096] Understandably, Figure 4 As shown, the target distance x between the fault point C and the collector line terminal B is calculated based on steps S201-S202. The second distance La between the fault point C and the first traveling wave detection device A is calculated based on steps S301-S303. If the distance between the first traveling wave detection device A and the collector line terminal B is L, the third distance L-La can be obtained. Furthermore, since both x and L-La represent the distance between the fault point C and the collector line terminal B, averaging the values to update the target distance x can further accurately locate the fault point.

[0097] The above mainly introduces the solution provided by the embodiment of the present application from the perspective of method. In order to realize the above functions, it includes hardware structures and / or software modules corresponding to the execution of each function. Those skilled in the art should easily appreciate that, in combination with the units and algorithm steps of each example described in the embodiments disclosed herein, the embodiments of the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a function is executed in a hardware or computer software driven hardware manner depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0098] In the embodiments of the present application, the user equipment can be divided into functional modules according to the above method examples. For example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated modules can be implemented in the form of hardware or software functional modules. Optionally, the division of modules in the embodiments of the present application is illustrative and is only a logical functional division. In actual implementation, other division methods may be used.

[0099] Figure 5 This is a schematic diagram of the structure of a line fault locating device provided in an embodiment of the present application. The line fault locating device is used to execute the above-mentioned line fault locating method. Figure 5 As shown, the line fault locating device 50 includes an acquiring unit 501 and a determining unit 502 .

[0100] The acquisition unit 501 is used to acquire the first moment when the traveling wave injection device injects the traveling wave signal at the end of the collector line, and the second moment when the traveling wave injection device collects the reflected wave.

[0101] The determining unit 502 is configured to determine a target distance between the fault point and the end of the collector line according to the first moment, the second moment, and the traveling wave velocity of the traveling wave signal, where the target distance is used to represent the location of the fault point.

[0102] Optional, such as Figure 5 As shown, the line fault locating device 50 provided in the embodiment of the present application further includes a processing unit 503 .

[0103] The determination unit 502 is further used to determine a first distance and a second distance, where the first distance is the distance between the first traveling wave detection device and the end of the collector line, and the second distance is the distance between the first traveling wave detection device and the fault point. The first traveling wave detection device is the first traveling wave detection device among the multiple traveling wave detection devices to collect the traveling wave signal.

[0104] The processing unit 503 is configured to update the target distance according to the first distance and the second distance.

[0105] Optional, such as Figure 5 As shown, in the line fault locating device 50 provided in the embodiment of the present application, the determining unit 502 is specifically used to obtain the third moment of the traveling wave signal collected by the first traveling wave detection device; and determine the first distance according to the first moment, the third moment and the traveling wave speed.

[0106] Optional, such as Figure 5As shown in the figure, in the line fault location device 50 provided by the embodiment of the present application, the determining unit 502 is specifically configured to obtain a fourth moment and a fifth moment, where the fourth moment is the moment when the first traveling wave detection device collects the initial traveling wave zero-mode component, and the fifth moment is the moment when the first traveling wave detection device collects the initial traveling wave line-mode component; determine the second distance according to the zero-mode wave velocity, the line-mode wave velocity, the fourth moment, and the fifth moment.

[0107] Optionally, as Figure 5 shown in the figure, in the line fault location device 50 provided by the embodiment of the present application, the processing unit 503 is specifically configured to determine the difference between the first distance and the second distance as the third distance; determine the average value of the third distance and the target distance as the updated target distance.

[0108] Optionally, as Figure 5 shown in the figure, in the line fault location device 50 provided by the embodiment of the present application, the processing unit 503 is further configured to control the traveling wave injection device to inject a traveling wave signal after determining that a fault exists in the end area of the collector line.

[0109] In the case of implementing the functions of the above integrated modules in the form of hardware, the embodiment of the present application provides a possible structural schematic diagram of a control device. The control device is used to execute the line fault location method executed by the line fault location device in the above embodiment. As Figure 6 shown in the figure, the control device 60 includes a processor 601, a memory 602, and a bus 603. The processor 601 and the memory 602 can be connected through the bus 603.

[0110] The processor 601 is the control center of the control device, which can be a single processor or a collective term for multiple processing elements. For example, the processor 601 can be a general-purpose central processing unit (CPU), or other general-purpose processors. Among them, the general-purpose processor can be a microprocessor or any conventional processor, etc.

[0111] As an embodiment, the processor 601 may include one or more CPUs, such as Figure 6 the CPU 0 and CPU 1 shown in

[0112] The memory 602 can be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, a random access memory (RAM) or other types of dynamic storage devices that can store information and instructions, or can also be an electrically erasable programmable read-only memory (EEPROM), a magnetic disk storage medium, or other magnetic storage devices, or any other medium that can be used to carry or store the desired program code in the form of instructions or data structures and can be accessed by a computer, but is not limited thereto.

[0113] As a possible implementation, the memory 602 can exist independently of the processor 601. The memory 602 can be connected to the processor 601 through the bus 603 for storing instructions or program code. When the processor 601 calls and executes the instructions or program code stored in the memory 602, the line fault location method provided by the embodiments of the present application can be implemented.

[0114] In another possible implementation, the memory 602 can also be integrated with the processor 601.

[0115] The bus 603 can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, an Extended Industry Standard Architecture (EISA) bus, etc. This bus can be divided into an address bus, a data bus, a control bus, etc. For the sake of convenience of representation, Figure 6 only a thick line is used to represent it in the figure, but it does not mean that there is only one bus or one type of bus.

[0116] It should be noted that Figure 6 the structure shown does not constitute a limitation on the control device 60. In addition to Figure 6 the components shown, the control device 60 can include more or fewer components than Figure 6 shown, or combine some components, or have different component arrangements.

[0117] As an example, in combination with Figure 5 , the functions implemented by the acquisition unit 501, the determination unit 502, and the processing unit 503 in the line fault location device 50 are the same as those of Figure 6 the processor 601 in

[0118] Optional, such as Figure 6 As shown, the control device provided in the embodiment of the present application may further include a communication interface 604 .

[0119] The communication interface 604 is used to connect to other devices via a communication network. The communication network can be Ethernet, wireless access network, wireless local area network (WLAN), etc. The communication interface 604 can include an acquisition unit for receiving data and a transmission unit for sending data.

[0120] In one design, in the control device provided in an embodiment of the present application, the communication interface can also be integrated into the processor.

[0121] Through the description of the above embodiments, those skilled in the art will clearly understand that for the sake of convenience and brevity, only the division of the above-mentioned functional units is used as an example. In actual applications, the above-mentioned functions can be distributed and completed by different functional units as needed, that is, the internal structure of the device can be divided into different functional units to complete all or part of the functions described above. The specific working processes of the above-mentioned systems, devices, and units can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0122] An embodiment of the present application further provides a computer-readable storage medium, in which instructions are stored. When a computer executes the instructions, the computer executes each step in the method flow shown in the above method embodiment.

[0123] An embodiment of the present application provides a computer program product comprising instructions. When the instructions are executed on a computer, the computer is caused to execute the line fault location method in the above method embodiment.

[0124] Among them, a computer-readable storage medium may be, for example, but not limited to, a system, apparatus, or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (a non-exhaustive list) of the computer-readable storage medium include: an electrical connection having one or more wires, a portable computer disk, a hard disk. Random Access Memory (RAM), Read-Only Memory (ROM), Erasable Programmable Read Only Memory (EPROM), registers, hard disks, optical fibers, portable compact disc read-only memory (Compact Disc Read-Only Memory, CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the above, or any other form of computer-readable storage medium known in the art. An exemplary storage medium is coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Of course, the storage medium may also be a component of the processor. The processor and the storage medium may be located in an Application Specific Integrated Circuit (ASIC). In the embodiments of the present application, the computer-readable storage medium may be any tangible medium that contains or stores a program, and the program can be used by or in combination with an instruction execution system, apparatus, or device.

[0125] Since the apparatuses, devices, computer-readable storage media, and computer program products in the embodiments of the present application can be applied to the above method, the technical effects that can be obtained can also refer to the method embodiments above, and the embodiments of the present application will not be elaborated here.

[0126] As described above, only the specific embodiments of the present application are provided, but the protection scope of the present application is not limited thereto. Any change or replacement within the technical scope disclosed in the present application should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A line fault location method, characterized in that, A control device applied to a line fault location system, the line fault location system further comprising a traveling wave injection device, the method comprising: Obtaining a first moment when the traveling wave injection device injects a traveling wave signal at the end of the collector line, and a second moment when the traveling wave injection device collects a reflected wave; Determining a target distance between the fault point and the end of the collector line according to the first moment, the second moment, and the traveling wave velocity of the traveling wave signal, the target distance being used to characterize the position of the fault point.

2. The line fault location method according to claim 1, characterized in that The line fault location system further comprises a plurality of traveling wave detection devices deployed on the collector line, and the method further comprises: Determining a first distance and a second distance, the first distance being the distance between a first traveling wave detection device and the end of the collector line, and the second distance being the distance between the first traveling wave detection device and the fault point, the first traveling wave detection device being the first traveling wave detection device among the plurality of traveling wave detection devices to collect the traveling wave signal; Updating the target distance according to the first distance and the second distance.

3. The line fault location method according to claim 2, wherein Determining the first distance includes: Obtaining a third moment when the first traveling wave detection device collects the traveling wave signal; Determining the first distance according to the first moment, the third moment, and the traveling wave velocity.

4. The line fault location method according to claim 2, wherein Determining the second distance includes: Obtaining a fourth moment and a fifth moment, the fourth moment being the moment when the first traveling wave detection device collects the initial traveling wave zero-mode component, and the fifth moment being the moment when the first traveling wave detection device collects the initial traveling wave line-mode component; Determining the second distance according to the zero-mode wave velocity, the line-mode wave velocity, the fourth moment, and the fifth moment.

5. The line fault location method according to any one of claims 2-4, characterized in that The updating the target distance according to the first distance and the second distance includes: Determining a difference between the first distance and the second distance as a third distance; Determining an average value of the third distance and the target distance as the updated target distance.

6. The line fault location method according to any one of claims 1-4, characterized in that The method further comprises: After determining that there is a fault in the end area of the collector line, controlling the traveling wave injection device to inject the traveling wave signal.

7. A line fault location system, characterized in that, Comprising a control device and a traveling wave injection device, the traveling wave injection device being deployed at the end of the collector line; The control device sends a control instruction to the traveling wave injection device, the control instruction being used to instruct the traveling wave injection device to inject a traveling wave signal; The traveling wave injection device responds to the control instruction, injects a traveling wave signal at the end of the collector line, and sends the first moment when the traveling wave signal is injected and the second moment when the reflected wave is collected to the control device; The control device determines a target distance between the fault point and the end of the collector line according to the first moment, the second moment, and the traveling wave velocity of the traveling wave signal, the target distance being used to characterize the position of the fault point.

8. The line fault location system according to claim 7, characterized in that, The line fault location system further comprises a plurality of traveling wave detection devices, the plurality of traveling wave detection devices being deployed on the collector line; The first traveling wave detection device sends the third moment, the fourth moment, and the fifth moment to the control device, and the first traveling wave detection device is the first traveling wave detection device among the multiple traveling wave detection devices to collect the traveling wave signal; The third moment is the moment when the first traveling wave detection device collects the traveling wave signal, the fourth moment is the moment when the first traveling wave detection device collects the initial traveling wave zero-mode component, and the fifth moment is the moment when the first traveling wave detection device collects the initial traveling wave line-mode component; The control device determines a first distance according to the first moment, the third moment, and the traveling wave velocity, and the first distance is the distance between the first traveling wave detection device and the end of the collector line; The control device determines a second distance according to the zero-mode wave velocity, the line-mode wave velocity, the fourth moment, and the fifth moment, and the second distance is the distance between the first traveling wave detection device and the fault point; The control device updates the target distance according to the first distance and the second distance.

9. A line fault location device, characterized in that, A control device deployed in a line fault location system, the line fault location system further includes a traveling wave injection device, and the line fault location device includes an acquisition unit and a determination unit; The acquisition unit is configured to acquire a first moment when the traveling wave injection device injects a traveling wave signal at the end of the collector line, and a second moment when the traveling wave injection device collects a reflected wave; The determination unit is configured to determine a target distance between the fault point and the end of the collector line according to the first moment, the second moment, and the traveling wave velocity of the traveling wave signal, and the target distance is used to characterize the position of the fault point.

10. A computer-readable storage medium storing instructions therein, characterized in that, When the instruction runs on the control device, the control device is caused to execute the line fault location method according to any one of claims 1-6.

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