Traveling wave range finding method and device based on traveling wave positioning

Abstract

The invention provides a traveling wave distance measurement method and device based on traveling wave positioning, and relates to the field of power grid maintenance, and the method comprises the steps: collecting a traveling wave data signal received by an uplink port, so as to obtain a traveling wave data parameter; inputting the traveling wave data parameters into a pre-constructed traveling wave enhancement judgment model, and performing enhancement judgment; collecting the traveling wave data signal after enhancement judgment to obtain an enhanced traveling wave data parameter; and generating an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter, and sending the enhanced traveling wave data packet to obtain a signal waiting time parameter so as to carry out traveling wave distance measurement. The traveling wave fault location method can optimize or solve the problem of how to optimize or solve the problem existing in the existing traveling wave fault location method through a logic method for the power distribution network.

Description

Technical Field

[0001] The present application relates to the field of power grid maintenance, and specifically to a traveling wave ranging method and device based on traveling wave positioning. Background Art

[0002] Traveling wave refers to a transmission state of a plane wave on a transmission line. In this state, the amplitude of the wave changes exponentially along the propagation direction, while the phase changes linearly along the transmission line. If we observe from adjacent moments t1 and t1+△t, we can find that the waveform moves toward the end of the transmission line over time.

[0003] In the power system, when a high-voltage AC transmission line fails, the traveling wave positioning technology can quickly and accurately locate the fault point through the collected time information. Its positioning principle is mainly based on the principle of traveling wave reflection at the fault point. By applying a certain electrical pulse or signal at both ends of the cable, a reflected wave will be generated at the fault point, and then a specific test instrument is used to measure the time delay and amplitude difference of the reflected wave to determine the location of the fault point. The principle of traveling wave positioning is mainly based on the propagation characteristics of traveling waves in the power system. When a cable fault occurs in the power system, the electromagnetic wave will propagate along the cable and reflect at the fault point. The traveling wave positioning device determines the location of the fault point by measuring the arrival time and amplitude of these reflected waves and using the time-distance relationship.

[0004] Traveling wave positioning methods are generally divided into three types: type A, type B and type C. The principle of type A positioning is to use the traveling wave generated by the fault point to determine the distance of the fault point according to the round-trip time from the measurement point to the fault point and the speed of the traveling wave. The principle of type B positioning is to use the time difference between the traveling wave generated by the fault point and the two ends of the line to achieve positioning. The principle of type C positioning is to inject a high-voltage pulse signal into the offline fault line with the help of a pulse transmitter, and measure the distance according to the round-trip time from the device to the fault point. In the traveling wave positioning system, the key components include a transmitter, a receiver, a distance measuring device and a data processing unit. The transmitter is responsible for injecting a traveling wave signal into the faulty cable. Generally, a high-frequency pulse generator is used to generate a high-voltage and high-frequency pulse signal. The receiving device is used to receive the traveling wave signal reflected from the faulty cable, usually including a high-frequency voltage sensor and a high-frequency current sensor. The distance measuring device is responsible for measuring the arrival time of the reflected wave, generally using high-speed sampling and precise timing technology. The data processing unit receives and processes the waveform data and distance measuring information obtained from the distance measuring device and the receiving device, and calculates the specific location of the fault point through algorithm analysis and data processing.

[0005] However, it should be noted that the traveling wave location method may be limited in some cases. For example, in the distribution network, due to the complex structure and numerous branches, the traveling wave signal may not be effectively identified during multiple refraction and reflection processes. In addition, for multi-terminal distribution network fault location, the injected signal may have reflected waves at multiple branches before and after the fault point, which may make it impossible to effectively distinguish the fault point. Therefore, in practical applications, it is necessary to select a suitable traveling wave location method based on the specific power system structure and fault type, and combine it with other fault location technologies for comprehensive judgment.

[0006] However, due to the intricate arrangement of cables and the long-term use of cables, the cables connected at the corners have increased resistance due to bending, which causes the traveling wave to detect anomalies when passing through this place, which is the same as the situation where the local resistance of the cable increases when the cable is damaged. Error information is returned, resulting in a misjudgment of the actual situation of the cable. At the same time, because the type of traveling wave used for cable damage detection is generally an electrical signal output, it will be lost when transmitted in the cable. After a certain distance of transmission, its amplitude strength and transmission speed will be affected, reduced or slowed down, resulting in inaccurate monitoring of the cable condition.

[0007] This section is intended to provide a background or context to the embodiments of the invention recited in the claims. No admission is made that the description herein is prior art by inclusion in this section. Summary of the invention

[0008] In response to the problems in the prior art, the present application provides a traveling wave ranging method and device based on traveling wave positioning, which can optimize or solve the problems existing in the existing traveling wave fault ranging method for the distribution network through a logical method.

[0009] In order to solve the above technical problems, this application provides the following technical solutions:

[0010] In a first aspect, the present application provides a traveling wave ranging method based on traveling wave positioning, comprising:

[0011] Collecting the traveling wave data signal received by the uplink port to obtain the traveling wave data parameters;

[0012] Inputting the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment;

[0013] Collecting the enhanced and judged traveling wave data signal to obtain enhanced traveling wave data parameters;

[0014] An enhanced traveling wave data packet is generated and sent out according to the traveling wave data parameter and the enhanced traveling wave data parameter, and a signal waiting time parameter is obtained to perform traveling wave ranging.

[0015] Further, the traveling wave data parameters include traveling wave amplitude attenuation data parameters, traveling wave phase velocity attenuation data parameters and traveling wave transmission velocity data parameters; the collecting of the traveling wave data signal received by the uplink port to obtain the traveling wave data parameters includes:

[0016] Collecting a traveling wave amplitude attenuation signal to obtain the traveling wave amplitude attenuation data parameter;

[0017] Collecting a traveling wave phase velocity attenuation signal to obtain the traveling wave phase velocity attenuation data parameter;

[0018] The traveling wave transmission speed signal is collected to obtain the traveling wave transmission speed data parameter.

[0019] Furthermore, the inputting of the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment includes:

[0020] Setting the traveling wave enhancement standard judgment parameter according to the traveling wave data parameter;

[0021] Constructing the traveling wave enhancement judgment model according to the traveling wave data parameters and the traveling wave enhancement standard judgment parameters;

[0022] The traveling wave enhancement judgment model is used to perform enhancement judgment to obtain enhancement result parameters.

[0023] Further, the generating and sending out an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter to obtain a signal waiting time parameter for performing traveling wave ranging includes:

[0024] Determining whether it is necessary to enhance the traveling wave signal according to the traveling wave data parameter and the enhanced traveling wave data parameter;

[0025] If the traveling wave signal needs to be enhanced, the enhanced value is output, and the enhanced value, the enhanced traveling wave data parameter and the traveling wave data parameter are packaged into the enhanced traveling wave data packet and sent out.

[0026] Further, the generating and sending out an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter to obtain a signal waiting time parameter for performing traveling wave ranging includes:

[0027] Collecting the emission signal generated when the enhanced traveling wave data packet is emitted, and recording the start time to obtain the signal emission time point;

[0028] Collecting the emitted signal generated when the enhanced traveling wave data packet is terminated, and recording the end time to obtain the signal end time point;

[0029] The signal waiting time parameter is determined according to the signal sending time point and the signal ending time point.

[0030] Further, the generating and sending out an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter to obtain a signal waiting time parameter for performing traveling wave ranging includes:

[0031] Return the signal waiting time standard value according to the signal waiting time parameter setting;

[0032] Constructing a fault judgment model according to the return signal waiting time standard value and the signal waiting time parameter;

[0033] The return signal waiting time standard value and the signal waiting time parameter are input into the fault judgment model to obtain the fault judgment result parameter to perform traveling wave ranging.

[0034] In a second aspect, the present application provides a traveling wave ranging device based on traveling wave positioning, comprising:

[0035] An initial parameter acquisition unit, used for collecting the traveling wave data signal received by the uplink port to obtain the traveling wave data parameters;

[0036] An enhancement judgment unit, used for inputting the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment;

[0037] An enhanced parameter acquisition unit, used for collecting the traveling wave data signal after enhanced judgment to obtain enhanced traveling wave data parameters;

[0038] The traveling wave ranging unit is used to generate and send out an enhanced traveling wave data packet according to the traveling wave data parameters and the enhanced traveling wave data parameters, and obtain a signal waiting time parameter to perform traveling wave ranging.

[0039] Furthermore, the traveling wave data parameters include traveling wave amplitude attenuation data parameters, traveling wave phase velocity attenuation data parameters and traveling wave transmission velocity data parameters; the initial parameter acquisition unit includes:

[0040] An amplitude parameter acquisition module is used to collect the traveling wave amplitude attenuation signal and obtain the traveling wave amplitude attenuation data parameter;

[0041] A wave phase velocity acquisition module is used to collect the traveling wave phase velocity attenuation signal and obtain the traveling wave phase velocity attenuation data parameters;

[0042] The transmission speed acquisition module is used to collect the traveling wave transmission speed signal and obtain the traveling wave transmission speed data parameters.

[0043] Furthermore, the enhanced judgment unit includes:

[0044] A standard parameter setting module, used for setting the traveling wave enhancement standard judgment parameters according to the traveling wave data parameters;

[0045] A judgment model building module, used to build the traveling wave enhancement judgment model according to the traveling wave data parameters and the traveling wave enhancement standard judgment parameters;

[0046] The enhancement judgment module is used to perform enhancement judgment using the traveling wave enhancement judgment model to obtain enhancement result parameters.

[0047] Furthermore, the traveling wave ranging unit comprises:

[0048] An enhanced signal determination module, used for determining whether the traveling wave signal needs to be enhanced according to the traveling wave data parameter and the enhanced traveling wave data parameter;

[0049] The packing and sending module is used for outputting an enhancement value if the traveling wave signal needs to be enhanced, and packing the enhancement value, the enhanced traveling wave data parameter and the traveling wave data parameter into the enhanced traveling wave data packet for sending.

[0050] Furthermore, the traveling wave ranging unit comprises:

[0051] The sending time acquisition module is used to collect the sending signal generated when the enhanced traveling wave data packet is sent, and record the start time to obtain the signal sending time point;

[0052] An end time acquisition module is used to collect the emitted signal generated when the enhanced traveling wave data packet ends, and record the end time to obtain the signal end time point;

[0053] The waiting time determination module is used to determine the signal waiting time parameter according to the signal sending time point and the signal ending time point.

[0054] Furthermore, the traveling wave ranging unit comprises:

[0055] A waiting standard determination module, used for returning a signal waiting time standard value according to the signal waiting time parameter setting;

[0056] A fault model building module, used to build a fault judgment model according to the return signal waiting time standard value and the signal waiting time parameter;

[0057] The traveling wave ranging module is used to input the return signal waiting time standard value and the signal waiting time parameter into the fault judgment model to obtain the fault judgment result parameter for performing traveling wave ranging.

[0058] In a third aspect, the present application provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the steps of the traveling wave ranging method based on traveling wave positioning when executing the program.

[0059] In a fourth aspect, the present application provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the traveling wave ranging method based on traveling wave positioning.

[0060] In a fifth aspect, the present application provides a computer program product, including a computer program / instruction, which, when executed by a processor, implements the steps of the traveling wave ranging method based on traveling wave positioning.

[0061] In response to the problems in the prior art, the traveling wave ranging method and device based on traveling wave positioning provided by the present application can collect cable information parameters received by the power transmission port to obtain a cable data parameter set; collect traveling wave data signal parameters received by the uplink port to obtain a traveling wave data parameter set; set traveling wave enhancement standard judgment parameters according to the traveling wave data parameter set; substitute the traveling wave data parameter set into the traveling wave enhancement standard judgment parameters to obtain enhanced result parameters; collect traveling wave data signal parameters after enhancement judgment to obtain enhanced traveling wave data parameters; package the enhanced traveling wave data parameters and the traveling wave data parameter set into an enhanced traveling wave data packet for output; the downlink port waits for the uplink port to receive the traveling wave data signal parameters; sends out the enhanced traveling wave data packet as the traveling wave data signal parameters; sends out the traveling wave data, sends out a start timing signal, waits for the acquisition of the termination signal, and obtains the signal waiting time parameter; and according to the signal The signal waiting time setting returns the standard value of the signal waiting time; if the signal waiting time value does not meet the waiting time standard value, the cable error information signal is output, and the cable error information signal is sent as an abnormal signal; if an abnormal signal is sensed, a maintenance signal is sent; if the waiting time value meets the waiting time standard value, the signal transmission information is packaged and sent as a traveling wave data signal parameter to detect the abnormal signal; if an abnormal signal is detected, the two interconnected power transmission ports send detection electrical signals to each other to obtain the location information of the damaged point, and then enhance the strength of the traveling wave signal, so that the traveling wave will not attenuate with the increase of distance, making the measurement of the traveling wave more accurate; at the same time, whether the cable is faulty is determined based on whether the detection returns a signal; if a fault occurs, a detection electrical signal is sent through the power transmission port, and the damaged point is accurately located through information such as the voltage in the cable, thereby facilitating the maintenance of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0062] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0063] Figure 1This is a flow chart of a traveling wave ranging method based on traveling wave positioning in an embodiment of the present application;

[0064] Figure 2 This is a flow chart for obtaining traveling wave data parameters in an embodiment of the present application;

[0065] Figure 3 This is a flow chart of performing enhanced judgment in an embodiment of the present application;

[0066] Figure 4 This is one of the flow charts for performing traveling wave ranging in an embodiment of the present application;

[0067] Figure 5 This is the second flow chart of traveling wave ranging in the embodiment of the present application;

[0068] Figure 6 This is the third flow chart of traveling wave ranging in the embodiment of the present application;

[0069] Figure 7 It is a structural diagram of a traveling wave ranging device based on traveling wave positioning in an embodiment of the present application;

[0070] Figure 8 This is a structural diagram of the initial parameter acquisition unit in an embodiment of the present application;

[0071] Fig. 9 This is a structural diagram of the enhanced judgment unit in the embodiment of the present application;

[0072] Fig.10 This is one of the structural diagrams of the traveling wave ranging unit in the embodiment of the present application;

[0073] Fig.11 This is the second structural diagram of the traveling wave ranging unit in the embodiment of the present application;

[0074] Fig.12 This is the third structural diagram of the traveling wave ranging unit in the embodiment of the present application;

[0075] Fig.13 A schematic diagram of the structure of an electronic device in an embodiment of the present application;

[0076] Fig.14 This is a primary wiring diagram of the simulation model in the embodiment of the present application;

[0077] Fig.15 A schematic diagram of cable information parameters in an embodiment of the present application;

[0078] Fig.16 This is a schematic diagram of the process steps in the embodiment of this application;

[0079] Fig.17 It is a schematic diagram of the method structure in the embodiment of this application. DETAILED DESCRIPTION

[0080] To make the purpose, technical solution and advantages of the embodiments of the present invention more clear, the embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments of the present invention and their descriptions are used to explain the present invention, but are not intended to limit the present invention.

[0081] The information collected in the technical solution of this application is information and data authorized by the user or fully authorized by all parties, and the collection, storage, use, processing, transmission, provision, disclosure and application of relevant data comply with the relevant laws, regulations and standards of relevant countries and regions, take necessary confidentiality measures, do not violate public order and good morals, and provide corresponding operation entrances for users to choose to authorize or refuse.

[0082] Provide users with corresponding operation entrances for them to choose to agree or reject the automated decision-making results; if the user chooses to reject, the expert decision-making process will be entered.

[0083] In one embodiment, see Figure 1 In order to optimize or solve the problems existing in the existing traveling wave fault location method for the distribution network through a logical method, the present application provides a traveling wave location method based on traveling wave positioning, including:

[0084] S101: Collecting a traveling wave data signal received by an uplink port to obtain traveling wave data parameters;

[0085] S102: inputting the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment;

[0086] S103: collecting the enhanced and determined traveling wave data signal to obtain enhanced traveling wave data parameters;

[0087] S104: Generate an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter and send it out, and obtain a signal waiting time parameter to perform traveling wave ranging.

[0088] It is understandable that the method provided by the present application can be used in scenarios where the cable layout is intricate and the cables have been in use for a long time. Specifically, in the above scenario, the cables connected at the corners have increased resistance at the bends due to bending, and the traveling wave detects an abnormality when passing through the bends, which is the same as the situation where the local resistance of the cable increases and an abnormality is detected when the cable is damaged, resulting in the return of error information and misjudgment of the actual situation of the cable. The method provided by the present application can solve the following technical problems: Since the type of traveling wave used for cable loss detection is generally an electrical signal output, it will be lost when transmitted in the cable. After a certain distance of transmission, its amplitude strength and transmission speed will be affected, for example, reduced or slowed down, resulting in inaccurate monitoring of the cable condition.

[0089] During the specific implementation, first, the cable information parameters received by the power transmission port are collected. In the embodiment of the present application, the collection operations and processing operations performed will use the system as the execution subject, that is, when the system needs to collect data, it will mobilize the corresponding sensor to collect data or collect data from the database. As for how to collect, or the collection method can be the existing technology. For example, to collect voltage and resistance, during the power transmission process, the voltage and resistance parameters can be collected by installing an electrical measuring sensor at the transmission node, and then the data can be packaged and uploaded to the system database or directly sent to the system data processing unit for processing. In the embodiment of the present application, only how the distribution network optimizes or solves the problems existing in the existing traveling wave fault ranging method through logical methods.

[0090] See also Fig.17 , collect the parameters of the traveling wave data signal received by the uplink port, and obtain the traveling wave data parameter set. It can be seen that the uplink port here is a node for transmitting the traveling wave signal, and the parameters are collected for it, which is convenient for observing the traveling wave signal, so as to judge whether the cable is normal according to the traveling wave signal.

[0091] Further, according to the traveling wave data parameter set, the traveling wave enhancement standard judgment parameter is set, and the traveling wave data parameter set is substituted into the traveling wave enhancement standard judgment parameter to obtain the enhancement result parameter. The traveling wave data signal parameters after the enhancement judgment are collected to obtain the enhanced traveling wave data parameters. The enhanced traveling wave data parameters and the traveling wave data parameter set are packaged into an enhanced traveling wave data packet for output. Next, the downstream port waits for the upstream port to receive the traveling wave data signal parameters, and sends the enhanced traveling wave data packet as the traveling wave data signal parameters, as above, see Fig.17 As shown, it is used to receive traveling wave signals.

[0092] Further, the traveling wave data is sent out, a start timing signal is sent out, and a termination signal is waited for to be obtained, and a signal waiting time parameter is obtained, see Fig.17 The logical order of its execution is to start working when a downstream port sends a traveling wave signal to another upstream port. It is used to time the transmission of the traveling wave signal between two points and is a standard for judging whether the traveling wave is normal.

[0093] Furthermore, a standard value of the signal waiting time is returned according to the signal waiting time setting; if the signal waiting time value does not meet the standard value of the waiting time, a cable error information signal is output, and the cable error information signal is sent as an abnormal signal; if an abnormal signal is sensed, a maintenance signal is sent; if the waiting time value meets the standard value of the waiting time, the signal transmission information is packaged and sent as a traveling wave data signal parameter.

[0094] Finally, the abnormal signal is detected. If an abnormal signal is detected, the two interconnected power transmission ports send detection electrical signals to each other to obtain the location information of the damage point.

[0095] In summary, the embodiment of the present application first confirms the traveling wave strength under different transmission environments by collecting cable data, and then collects upstream port data to receive the traveling wave strength transmitted from the previous node to this node, and then determines whether it needs to be strengthened to ensure the accuracy of the traveling wave ranging and record it. Finally, according to the principle that when the cable fails, the traveling wave cannot be transmitted normally or the transmission speed is slow, a timing clock is set to observe the traveling wave transmission time. In this system, the various parameters of the cable and the traveling wave strength are known, so the transmission speed of the traveling wave is also known, so it can be determined whether there is an abnormality in the traveling wave transmission circuit, and then the fault point is located by sending a traveling wave signal through the double-end node of the cable.

[0096] From the above description, it can be seen that the traveling wave ranging method based on traveling wave positioning provided by the present application can collect the cable information parameters received by the power transmission port to obtain a cable data parameter set; collect the traveling wave data signal parameters received by the upstream port to obtain a traveling wave data parameter set; according to the traveling wave data parameter set, set the traveling wave enhancement standard judgment parameters; substitute the traveling wave data parameter set into the traveling wave enhancement standard judgment parameters to obtain the enhanced result parameters; collect the traveling wave data signal parameters after enhancement judgment to obtain enhanced traveling wave data parameters; package the enhanced traveling wave data parameters and the traveling wave data parameter set into an enhanced traveling wave data packet for output; the downstream port waits for the upstream port to receive the traveling wave data signal parameters; sends the enhanced traveling wave data packet as the traveling wave data signal parameters; sends the traveling wave data, sends a start timing signal, waits for the acquisition of the termination signal, and obtains the signal waiting time parameters; according to the signal waiting time The time setting returns the standard value of the signal waiting time; if the signal waiting time value does not meet the standard value of the waiting time, the cable error information signal is output, and the cable error information signal is sent as an abnormal signal; if an abnormal signal is sensed, a maintenance signal is sent; if the waiting time value meets the standard value of the waiting time, the signal transmission information is packaged and sent as a traveling wave data signal parameter to detect the abnormal signal; if an abnormal signal is detected, the two interconnected power transmission ports send detection electrical signals to each other to obtain the location information of the damaged point, and then enhance the strength of the traveling wave signal, so that the traveling wave will not attenuate with the increase of distance, making the measurement of the traveling wave more accurate; at the same time, whether the cable is faulty is determined based on whether the detection returns a signal; if a fault occurs, a detection electrical signal is sent through the power transmission port, and the damaged point is accurately located through information such as the voltage in the cable, thereby facilitating the maintenance of the cable.

[0097] In one embodiment, see Figure 2, the traveling wave data parameters include traveling wave amplitude attenuation data parameters, traveling wave phase velocity attenuation data parameters and traveling wave transmission velocity data parameters; the collecting of the traveling wave data signal received by the uplink port to obtain the traveling wave data parameters includes:

[0098] S201: collecting a traveling wave amplitude attenuation signal to obtain the traveling wave amplitude attenuation data parameter;

[0099] S202: Collecting a traveling wave phase velocity attenuation signal to obtain the traveling wave phase velocity attenuation data parameter;

[0100] S203: Collecting a traveling wave transmission speed signal to obtain the traveling wave transmission speed data parameter.

[0101] Understandably, see Fig.15 , Fig.16 As shown, step S100 refers to collecting the cable information parameters received by the power transmission port to obtain a cable data parameter set. Step S100 specifically includes:

[0102] ① Collect cable material information and obtain cable material information parameters;

[0103] ② Collect cable power transmission voltage information and obtain cable voltage information parameters;

[0104] ③ Collect cable power transmission current information and obtain cable current information parameters;

[0105] ④ Collect cable power transmission resistance information and obtain cable resistance information parameters.

[0106] In the embodiment of the present application, the cable material information parameter, the cable voltage information parameter, the cable current information parameter and the cable resistance information parameter are output as a set of cable data parameters. When actually collecting information on the cable through traveling waves, the current, voltage and resistance are different depending on the cable material. At this time, the traveling wave is transmitted in the cable and is also affected by the cable material, resulting in different transmission rates, and then the traveling wave intensity is controlled according to the different cable materials.

[0107] For example, when the conductive material in the cable is oxidized due to long-term use, the traveling wave using it as a medium will also be affected, resulting in a lower propagation rate. At the same time, the aging of the cable causes additional energy loss, which in turn hinders the propagation of the traveling wave in the cable, and the transmission distance of the traveling wave is shortened. With this information, the initial signal strength of the traveling wave can be appropriately strengthened to make the traveling wave propagate farther and faster.

[0108] Step S200 refers to collecting the parameters of the traveling wave data signal received by the uplink port to obtain a traveling wave data parameter set. Step S200 specifically includes:

[0109] ① Collect the traveling wave amplitude attenuation information and obtain the traveling wave amplitude attenuation information parameters;

[0110] ② Collect the traveling wave phase velocity attenuation information and obtain the traveling wave phase velocity attenuation information parameters;

[0111] ③ Collect traveling wave transmission speed information and obtain traveling wave transmission speed information parameters.

[0112] In the embodiment of the present application, the traveling wave amplitude attenuation information parameter, the traveling wave phase velocity attenuation information parameter and the traveling wave transmission velocity information parameter are output as a traveling wave data parameter set. When actually measuring the distance of the traveling wave, since the traveling wave moves in the cable in the form of a signal, it will be lost due to the cable material, which will cause the amplitude, phase velocity and transmission velocity of the traveling wave to attenuate. By monitoring the traveling wave signal, the traveling wave intensity can be controlled according to the strength of the traveling wave signal.

[0113] For example, when measuring the distance of a cable, a traveling wave signal is emitted from one end of the cable, at which time the traveling wave signal is the strongest. The traveling wave signal is then transmitted in the cable. As the propagation distance increases, the traveling wave signal is lost in the cable. At this time, the loss difference is collected, and the cable loss can be known in disguise, and the strength of the traveling wave signal can be controlled according to the cable loss.

[0114] It can be seen from the above description that the traveling wave ranging method based on traveling wave positioning provided in the present application can collect the traveling wave data signal received by the uplink port to obtain the traveling wave data parameters.

[0115] In one embodiment, see Figure 3 , the inputting of the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment includes:

[0116] S301: Setting a traveling wave enhancement standard judgment parameter according to the traveling wave data parameter;

[0117] S302: constructing the traveling wave enhancement judgment model according to the traveling wave data parameters and the traveling wave enhancement standard judgment parameters;

[0118] S303: Perform enhancement judgment using the traveling wave enhancement judgment model to obtain enhancement result parameters.

[0119] Understandably, see Fig.16 As shown, step S300 is to set the traveling wave enhancement standard judgment parameter according to the traveling wave data parameter set, substitute the traveling wave data parameter set into the traveling wave enhancement standard judgment parameter, and obtain the enhancement result parameter. Step S300 specifically includes:

[0120] ① Setting the traveling wave enhancement standard judgment parameters according to the traveling wave data parameter set;

[0121] ② Construct a judgment model based on the traveling wave data parameter set and the traveling wave enhancement standard judgment parameters, substitute the traveling wave data parameter set and the standard judgment parameters into the judgment model, arrange and calculate according to the judgment formula, and obtain the enhancement result parameters.

[0122] The judgment formula is as follows:

[0123]

[0124] Among them, F is the difference conversion symbol set, which converts the difference of the traveling wave signal into a numerical value that is convenient for calculation. ρ is the reference parameter preset by the user, which can be adjusted according to the actual situation. The traveling wave enhancement standard judgment parameter is set to judge whether the traveling wave signal is weakened; av is the traveling wave amplitude attenuation information parameter obtained based on the cable material information parameter; sv is the traveling wave phase velocity attenuation information parameter obtained based on the cable material information parameter; ts is the traveling wave transmission speed information parameter obtained based on the cable material information parameter; according to the different values ​​of av, sv and ts, the corresponding difference conversion parameters can be called for calculation, among which G / F (av+sv+ts) can be converted into G / Fav, G / Fsv and G / Fts according to the F symbol set; G is the setting of the traveling wave enhancement standard judgment parameter; K is the traveling wave data signal parameter after enhancement judgment.

[0125] In the embodiment of the present application, the intensity change of each component signal of the traveling wave signal is collected, and the traveling wave enhancement standard judgment parameter and the user-preset reference parameter are combined to judge the strength of the traveling wave signal. When the traveling wave data signal parameter after the enhanced judgment is greater than the preset reference value, it means that the traveling wave signal strength is high and the traveling wave signal does not need to be strengthened; when the traveling wave data signal parameter after the enhanced judgment is less than the preset reference value, it means that the traveling wave signal strength is weak, and a signal enhancement signal needs to be issued.

[0126] Exemplarily, when a traveling wave signal propagates in a cable, the traveling wave amplitude, phase velocity and transmission speed attenuation information of the starting point and receiving point of the traveling wave signal are collected, and this information is transformed by converting signs. At this time, the strength of the traveling wave signal can be judged in combination with the user-preset benchmark parameters.

[0127] It can be seen from the above description that the traveling wave ranging method based on traveling wave positioning provided in the present application can input the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhanced judgment.

[0128] In one embodiment, see Figure 4 , generating and sending an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter, and obtaining a signal waiting time parameter to perform traveling wave ranging, including:

[0129] S401: judging whether it is necessary to enhance the traveling wave signal according to the traveling wave data parameter and the enhanced traveling wave data parameter;

[0130] S402: If the traveling wave signal needs to be enhanced, an enhancement value is output, and the enhancement value, the enhanced traveling wave data parameter and the traveling wave data parameter are packaged into the enhanced traveling wave data packet and sent out.

[0131] Understandably, see Fig.16 As shown, step S400 refers to collecting the parameters of the traveling wave data signal after the enhanced judgment, obtaining the enhanced traveling wave data parameters, and packaging the enhanced traveling wave data parameters and the traveling wave data parameter set into an enhanced traveling wave data packet for output. Step S400 specifically includes: collecting the parameters of the traveling wave data signal after the enhanced judgment, and judging whether to enhance the traveling wave signal according to the parameters of the traveling wave data signal after the enhanced judgment. If the traveling wave signal needs to be enhanced, the enhanced value is output, and the enhanced value, the enhanced traveling wave signal and the traveling wave data parameter set are packaged into an enhanced traveling wave data packet for output.

[0132] In the embodiment of the present application, after the enhanced judgment is detected, the enhanced traveling wave data signal parameters are used to determine whether to send an enhanced traveling wave signal. If the traveling wave strength is sufficient, the sent enhanced traveling wave signal is a null value; if the traveling wave strength is insufficient, an enhanced traveling wave signal is sent to strengthen the weakened traveling wave, and the enhanced value, the enhanced traveling wave signal and the traveling wave data parameter set are packaged into an enhanced traveling wave data packet for output. By setting the enhanced value, the number of times the traveling wave signal is enhanced can be determined, and by the number of times the enhancement is performed, the length of the cable can be determined.

[0133] From the above description, it can be seen that the traveling wave ranging method based on traveling wave positioning provided in the present application can generate and send out an enhanced traveling wave data packet according to the traveling wave data parameters and the enhanced traveling wave data parameters, and obtain a signal waiting time parameter to perform traveling wave ranging.

[0134] In one embodiment, see Figure 5 , generating and sending an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter, and obtaining a signal waiting time parameter to perform traveling wave ranging, including:

[0135] S501: collecting a sending signal generated when the enhanced traveling wave data packet is sent, and recording the start time to obtain a signal sending time point;

[0136] S502: collecting the sending signal generated when the enhanced traveling wave data packet is terminated, and recording the end time to obtain the signal end time point;

[0137] S503: Determine a signal waiting time parameter according to the signal sending time point and the signal ending time point.

[0138] Understandably, see Fig.16 As shown, step S500 means that the downlink port waits for the uplink port to receive the traveling wave data signal parameter, and sends the enhanced traveling wave data packet as the traveling wave data signal parameter. Step S500 specifically includes:

[0139] ① Collect the signal generated when the traveling wave data is emitted, start recording the time, and obtain the time point when the signal is emitted;

[0140] ② Collect the signal generated when the traveling wave data is terminated, record the end time, and obtain the signal end time point;

[0141] ③According to the signal sending time point and signal ending time point, obtain the signal waiting time parameters.

[0142] In the embodiments of the present application, during the actual detection process, cable damage and aging will reduce the rate of traveling wave propagation, resulting in different traveling wave transmission speeds in the recording materials in the system, or even the inability to transmit the traveling wave due to damage. At this time, the traveling wave transmission rate is judged by recording the signal sending time and the return signal end information, thereby judging the cable damage.

[0143] From the above description, it can be seen that the traveling wave ranging method based on traveling wave positioning provided in the present application can generate and send out an enhanced traveling wave data packet according to the traveling wave data parameters and the enhanced traveling wave data parameters, and obtain a signal waiting time parameter to perform traveling wave ranging.

[0144] In one embodiment, see Figure 6 , generating and sending an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter, and obtaining a signal waiting time parameter to perform traveling wave ranging, including:

[0145] S601: Returning a standard signal waiting time value according to the signal waiting time parameter setting;

[0146] S602: constructing a fault judgment model according to the return signal waiting time standard value and the signal waiting time parameter;

[0147] S603: Input the return signal waiting time standard value and the signal waiting time parameter into the fault judgment model to obtain a fault judgment result parameter to perform traveling wave ranging.

[0148] Understandably, see Fig.16 As shown, step S600 refers to sending out the traveling wave data, sending out a start timing signal, waiting for obtaining a termination signal, and obtaining a signal waiting time parameter. Step S600 specifically includes:

[0149] ① According to the signal waiting time parameter, set the return signal waiting time standard value;

[0150] ② Set up a fault judgment model according to the return signal waiting time standard value and the signal waiting time parameter. Substitute the signal waiting time standard value and the signal waiting time parameter into the fault judgment model, arrange the data according to the fault judgment formula parameter position, and obtain the fault judgment result parameter. If the fault judgment result parameter is a negative number, it means that the traveling wave return time is too long, then the cable error information signal is output, and the cable error information signal is sent as an abnormal signal. If an abnormal signal is sensed, a maintenance signal is sent. If the fault judgment result parameter is a positive number, the signal transmission information is packaged and sent as a traveling wave data signal parameter, and the return signal waiting time standard value is set according to the signal waiting time. If the signal waiting time value does not meet the waiting time standard value, the cable error information signal is output, and the cable error information signal is sent as an abnormal signal. If an abnormal signal is sensed, a maintenance signal is sent. If the waiting time value meets the waiting time standard value, the signal transmission information is packaged and sent as a traveling wave data signal parameter; wherein, the fault judgment formula is:

[0151]

[0152] Among them, R is the traveling wave strength judgment value. When the traveling wave strength judgment value meets the traveling wave enhancement standard judgment parameter, it means that the traveling wave signal strength is qualified and there is no need to send an information package signal; if the traveling wave strength judgment value does not meet the traveling wave enhancement standard judgment parameter, it means that the traveling wave signal does not meet the requirements and a maintenance signal is sent. Among them, p is the return signal waiting time standard value, and p∈[0,4). The return signal waiting time standard value can be changed according to user needs, thereby changing the cable damage condition judgment. T is a preset judgment parameter, x is a set conversion parameter, which converts the time parameter into a value that is convenient for calculation. m is a preset fault judgment weight value, which can be changed by the user according to their own needs. The larger it is, the smaller the output value is, and the smaller it is, the larger the output value is, so that the user can make changes according to the actual requirements for the cable. ot is the signal end time point, and st is the signal sending time point.

[0153] The following is the principle analysis of the traveling wave ranging method based on traveling wave positioning:

[0154] m and n are the two ends of the line, F is the fault point, and its distance from the m end is L. Assuming that the initial fault wave surge propagates at the same propagation speed v, the time it takes for the traveling wave to reach the busbars at the m end and the n end is L respectively. 1 and L 2 ;t m The time it takes for the traveling wave to reach the m end divided by the traveling wave velocity is the actual propagation distance of the traveling wave to reach the m end; t nIt is the time it takes for the traveling wave to reach the n-end divided by the traveling wave velocity, which is the actual propagation distance of the traveling wave to reach the n-end.

[0155] Then the following relationship exists:

[0156]

[0157]

[0158] The distance between the fault point and the end point of the transmission line can be calculated by using formulas (1) and (2).

[0159] When the length of the transmission line is not negligible compared to the wavelength of the electromagnetic wave, the lumped parameter model cannot be used, and the distributed parameter model must be used. Since the line has distributed resistance, inductance, conductance, and capacitance, wave processes will be generated on the conductor. If it is a lumped parameter, there will be no wave process.

[0160] After using the traveling wave to measure the distance to the fault point, set the return signal waiting time standard value according to the signal waiting time parameter, and judge the distance to the fault point by the traveling wave return time. The following relationship exists:

[0161]

[0162] It can be concluded from formula (3) that if the traveling wave strength judgment value meets the traveling wave enhancement standard judgment parameter, it means that the traveling wave signal strength is qualified and there is no need to send an information packaging signal; if the traveling wave strength judgment value does not meet the traveling wave enhancement standard judgment parameter, it means that the traveling wave signal does not meet the requirements and a maintenance signal is sent. The specific process is as follows:

[0163]

[0164] In an embodiment of the present application, a preset fault judgment weight value is combined with the time difference between the signal end time point and the signal sending time point to judge the deviation between the traveling wave ranging and the normal traveling wave sequencing. Then, according to the time of the traveling wave measurement, it is judged whether the cable is damaged or aged, and different processing methods are selected according to the actual situation.

[0165] Next, step S700 refers to: detecting an abnormal signal, if an abnormal signal is detected, the two interconnected power transmission ports send detection electrical signals to each other to obtain the location information of the damaged point. Step S700 specifically includes: collecting abnormal signals, obtaining and sending detection signals, and determining the cable damaged point information according to the change of current in the cable.

[0166] In an embodiment of the present application, when an abnormal signal is collected, a control signal is issued to cause the power transmission port to issue a detection signal. The detection signal is an electrical signal, and the damaged and aged cable information of the damaged cable is detected through the electrical signal, thereby accurately locating the fault point and achieving rapid positioning of the fault point.

[0167] From the above description, it can be seen that the traveling wave ranging method based on traveling wave positioning provided in the present application can generate and send out an enhanced traveling wave data packet according to the traveling wave data parameters and the enhanced traveling wave data parameters, and obtain a signal waiting time parameter to perform traveling wave ranging.

[0168] The following is a specific example to simulate the fault distance measurement and positioning of the main line.

[0169] The simulation platform is used to simulate the A phase grounding fault, and the basic parameters are set as follows:

[0170] Fault type: Phase A ground fault

[0171] Fault location: 100 meters from 15 measurement points

[0172] Failure time: 0.225s

[0173] Traveling wave acquisition and detection parameter module parameter settings:

[0174] The delay time is set to 0.2s and the difference connection point; two inputs, one positive and one negative; the range comparator is set to two threshold values; a multi-input logic OR gate is used. After running the simulation platform, the output results of each module and their corresponding analysis are as follows:

[0175] See also Fig.14 As shown, 1 is the measuring point at the power supply end, where the length of the branch line is l1 = 100m; 2, 3, 4, 5, 6, 7, 8, 9, 10, 11 are the distribution network l2 = 300m, l3 = 250m, l4 = 100m, l5 = 350m, l6 = 200m, l7 = 250m, l8 = 300m, l9 = 200m, l10 = 300m, l11 = 100m; A, B, C, ..., G, H are the branch points of the line, and the distances between the two adjacent points are lAB = 600m, BC = 750m, lDE = 1500m, lEF = 300m, lEG = 600m, lGH = 700m; the speed of the traveling wave in the line is v = 3 × 108m / s. The sampling frequency is 10MHz, and the fault time is 0.225s.

[0176] The simulation diagram lists the voltage traveling waves measured at several representative measurement points within 0.2s after a metallic A-phase grounding fault occurs at a branch line 100m away from measurement point 5.

[0177] The times when the initial fault traveling wave arrives at each measuring point at the end of the distribution line are: T1=225005.7μs, T2=225000.4μs, T3=225002.6μs, T4=225005.1μs, T5=225010.4μs, T6=225014.1μs, T7=225013.8μs, T8=225007.4μs, T9=225009.4μs, T10=225009.7μs, T11=225014.4μs.

[0178] Step 1: Select a reference measurement point. Measurement point 5 is the measurement point where the initial fault traveling wave first arrives, and its corresponding arrival time of the initial fault traveling wave is T2 = 225000.2 μs, so measurement point 5 is selected as the reference measurement point.

[0179] Step 2: Preliminary fault location. Based on the basic principle of traveling wave fault location in distribution network, the possible location of the fault point is calculated using the line where measurement point 5 and measurement point 1 are located, that is, the distance d from the fault point to measurement point 5. 1 :

[0180]

[0181] Among them, l 1 and l 5 is the length of the branch line where the measuring point is located;

[0182] l AB , l BC , l SA are the distances between two adjacent points;

[0183] v is the speed of the traveling wave in the line;

[0184] T 1 and T 5 They are respectively used to obtain the time when the initial fault traveling wave arrives at each measuring point at the end of the distribution line.

[0185] Using the same method, we can use the lines where fault point 5 and other measuring points are located to calculate the distances from the fault point to measuring point 5: d2=90m, d3=95m, d4=95m, d5=0m, d6=95m, d7=90m, d8=100m, d9=95m, d10=95m, d11=90m.

[0186] Step 3: Accurate fault location. After calculating the preliminary fault location result, select the maximum value from the preliminary fault location result as the final accurate fault location result, that is, the distance 15k from the fault point to the measurement point 5 is: 15k = max (dj) = d1 = 95m, that is, the distance from the fault point to the reference measurement point on the line where the measurement point 5 and the measurement point 1 are located is 95m, and compared with the actual fault point, the measurement error is 5m.

[0187] Table 4-1 lists the fault location results of the A-phase transition resistance grounding fault, two-phase, and three-phase metallic faults that occurred at a distance of 100 meters from the branch line where the measuring point 5 is located to the measuring point 5.

[0188] Table 4-1 Location results for different types of metallic faults

[0189]

[0190] After the A-phase metallic grounding occurs at other branch lines and contacts, the simulation results are shown in Table 4-2.

[0191] Table 4-2 Simulation results of metallic ground fault on phase A

[0192]

[0193] It should be noted that when the network lines are relatively complex, it is difficult to obtain the initial fault traveling wave signal at a measurement point far away from the fault point, or the time to obtain the initial fault traveling wave is relatively long due to the attenuation of the initial fault traveling wave in the line, the method provided in this application can be applied.

[0194] In the above, the timing sensor records the time point when the signal is sent and the time point when the signal returns. A trigger reactor can be used. When the traveling wave passes, the sensor is triggered to start working, and a critical value is set. When the traveling wave signal does not return for a long time, it will automatically shut down, and the closing time is collected as the end time of the signal return.

[0195] It can be seen that the method provided by the present application can detect abnormal signals. If an abnormal signal is detected, the two interconnected power transmission ports send detection electrical signals to each other to obtain the location information of the damaged point, and then enhance the strength of the traveling wave signal, so that the traveling wave will not attenuate with the increase of distance, making the measurement of the traveling wave more accurate. At the same time, it is determined whether the cable is faulty based on whether the detection returns a signal. If a fault occurs, a detection electrical signal is sent through the power transmission port, and the damaged point is accurately located through the voltage and other information in the cable, so as to facilitate the maintenance of the cable.

[0196] It should be noted that the traveling wave ranging method based on traveling wave positioning provided in the embodiment of the present invention can be used in the financial field, and can also be used in any technical field other than the financial field. The embodiment of the present invention does not limit the application field of the traveling wave ranging method based on traveling wave positioning.

[0197] Based on the same inventive concept, the embodiment of the present application also provides a traveling wave ranging device based on traveling wave positioning, which can be used to implement the method described in the above embodiment, as described in the following embodiment. Since the principle of solving the problem by the traveling wave ranging device based on traveling wave positioning is similar to the traveling wave ranging method based on traveling wave positioning, the implementation of the traveling wave ranging device based on traveling wave positioning can refer to the implementation of the method based on software performance benchmark determination, and the repetitions will not be repeated. As used below, the term "unit" or "module" can be a combination of software and / or hardware that implements a predetermined function. Although the system described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceived.

[0198] In one embodiment, see Figure 7 In order to optimize or solve the problems of the existing traveling wave fault ranging method in the distribution network through logical methods, the present application provides a traveling wave ranging device based on traveling wave positioning, including: an initial parameter acquisition unit 701, an enhanced judgment unit 702, an enhanced parameter acquisition unit 703 and a traveling wave ranging unit 704.

[0199] The initial parameter acquisition unit 701 is used to collect the traveling wave data signal received by the uplink port to obtain the traveling wave data parameters;

[0200] An enhancement judgment unit 702 is used to input the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment;

[0201] The enhanced parameter acquisition unit 703 is used to collect the traveling wave data signal after the enhanced judgment to obtain the enhanced traveling wave data parameter;

[0202] The traveling wave ranging unit 704 is used to generate and send out an enhanced traveling wave data packet according to the traveling wave data parameters and the enhanced traveling wave data parameters, and obtain a signal waiting time parameter to perform traveling wave ranging.

[0203] In one embodiment, see Figure 8 The traveling wave data parameters include traveling wave amplitude attenuation data parameters, traveling wave phase velocity attenuation data parameters and traveling wave transmission velocity data parameters; the initial parameter acquisition unit 701 includes: an amplitude parameter acquisition module 801, a wave phase velocity acquisition module 802 and a transmission velocity acquisition module 803.

[0204] An amplitude parameter acquisition module 801 is used to collect a traveling wave amplitude attenuation signal and obtain the traveling wave amplitude attenuation data parameter;

[0205] The wave phase velocity acquisition module 802 is used to collect the traveling wave phase velocity attenuation signal and obtain the traveling wave phase velocity attenuation data parameters;

[0206] The transmission speed acquisition module 803 is used to collect the traveling wave transmission speed signal and obtain the traveling wave transmission speed data parameter.

[0207] In one embodiment, see Fig. 9 The enhanced judgment unit 702 includes: a standard parameter setting module 901, a judgment model building module 902 and an enhanced judgment module 903.

[0208] A standard parameter setting module 901 is used to set the traveling wave enhancement standard judgment parameters according to the traveling wave data parameters;

[0209] A judgment model building module 902 is used to build the traveling wave enhancement judgment model according to the traveling wave data parameters and the traveling wave enhancement standard judgment parameters;

[0210] The enhancement judgment module 903 is used to perform enhancement judgment using the traveling wave enhancement judgment model to obtain enhancement result parameters.

[0211] In one embodiment, see Fig.10 , the traveling wave ranging unit 704 comprises:

[0212] An enhanced signal determination module 1001 is used to determine whether the traveling wave signal needs to be enhanced according to the traveling wave data parameter and the enhanced traveling wave data parameter;

[0213] The packing and sending module 1002 is used to output an enhancement value if the traveling wave signal needs to be enhanced, and pack the enhancement value, the enhanced traveling wave data parameter and the traveling wave data parameter into the enhanced traveling wave data packet for sending.

[0214] In one embodiment, see Fig.11 The traveling wave ranging unit 704 includes: a sending time acquisition module 1101, an end time acquisition module 1102 and a waiting time determination module 1103.

[0215] The sending time acquisition module 1101 is used to collect the sending signal generated when the enhanced traveling wave data packet is sent, and record the start time to obtain the signal sending time point;

[0216] The end time acquisition module 1102 is used to collect the signal generated when the enhanced traveling wave data packet ends, and record the end time to obtain the signal end time point;

[0217] The waiting time determination module 1103 is used to determine the signal waiting time parameter according to the signal sending time point and the signal ending time point.

[0218] In one embodiment, see Fig.12 The traveling wave ranging unit 704 includes: a waiting standard determination module 1201, a fault model construction module 1202 and a traveling wave ranging module 1203.

[0219] A waiting standard determination module 1201 is used to set and return a signal waiting time standard value according to the signal waiting time parameter;

[0220] A fault model building module 1202 is used to build a fault judgment model according to the return signal waiting time standard value and the signal waiting time parameter;

[0221] The traveling wave ranging module 1203 is used to input the return signal waiting time standard value and the signal waiting time parameter into the fault judgment model to obtain the fault judgment result parameter for performing traveling wave ranging.

[0222] From the hardware level, in order to optimize or solve the problems existing in the existing traveling wave fault ranging method for the distribution network through a logical method, the present application provides an embodiment of an electronic device for implementing all or part of the contents of the traveling wave ranging method based on traveling wave positioning, and the electronic device specifically includes the following contents:

[0223] Processor, memory, communication interface and bus; wherein the processor, memory and communication interface communicate with each other through the bus; the communication interface is used to realize information transmission between the traveling wave ranging device based on traveling wave positioning and related equipment such as core business systems, user terminals and related databases; the logic controller can be a desktop computer, a tablet computer and a mobile terminal, etc., but the present embodiment is not limited thereto. In the present embodiment, the logic controller can be implemented with reference to the embodiment of the traveling wave ranging method based on traveling wave positioning and the embodiment of the traveling wave ranging device based on traveling wave positioning in the embodiment, and the contents thereof are incorporated herein, and the repeated parts are not repeated.

[0224] It is understandable that the user terminal may include a smart phone, a tablet electronic device, a network set-top box, a portable computer, a desktop computer, a personal digital assistant (PDA), a vehicle-mounted device, a smart wearable device, etc. Among them, the smart wearable device may include smart glasses, a smart watch, a smart bracelet, etc.

[0225] In practical applications, part of the traveling wave ranging method based on traveling wave positioning can be executed on the electronic device side as described above, or all operations can be completed in the client device. The specific selection can be based on the processing capability of the client device and the limitations of the user's usage scenario. This application does not limit this. If all operations are completed in the client device, the client device may also include a processor.

[0226] The client device may have a communication module (i.e., a communication unit) that can communicate with a remote server to achieve data transmission with the server. The server may include a server on the task scheduling center side, and other implementation scenarios may also include a server on an intermediate platform, such as a server on a third-party server platform that has a communication link with the task scheduling center server. The server may include a single computer device, or a server cluster consisting of multiple servers, or a server structure of a distributed device.

[0227] Fig.13 FIG. 9 is a schematic block diagram of the system structure of the electronic device 9600 according to an embodiment of the present application. Fig.13 As shown, the electronic device 9600 may include a central processor 9100 and a memory 9140; the memory 9140 is coupled to the central processor 9100. It is worth noting that Fig.13 This is exemplary only; other types of structures may also be used to supplement or replace this structure to implement telecommunication functions or other functions.

[0228] In one embodiment, the function of the traveling wave ranging method based on traveling wave positioning can be integrated into the central processing unit 9100. The central processing unit 9100 can be configured to perform the following control:

[0229] S101: Collecting a traveling wave data signal received by an uplink port to obtain traveling wave data parameters;

[0230] S102: inputting the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment;

[0231] S103: collecting the enhanced and determined traveling wave data signal to obtain enhanced traveling wave data parameters;

[0232] S104: Generate an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter and send it out, and obtain a signal waiting time parameter to perform traveling wave ranging.

[0233] From the above description, it can be seen that the traveling wave ranging method and device based on traveling wave positioning provided by the present application can collect cable information parameters received by the power transmission port to obtain a cable data parameter set; collect traveling wave data signal parameters received by the upstream port to obtain a traveling wave data parameter set; according to the traveling wave data parameter set, set the traveling wave enhancement standard judgment parameters; substitute the traveling wave data parameter set into the traveling wave enhancement standard judgment parameters to obtain the enhancement result parameters; collect the traveling wave data signal parameters after enhancement judgment to obtain enhanced traveling wave data parameters; package the enhanced traveling wave data parameters and the traveling wave data parameter set into an enhanced traveling wave data packet for output; the downstream port waits for the upstream port to receive the traveling wave data signal parameters; sends the enhanced traveling wave data packet as the traveling wave data signal parameters; sends the traveling wave data, sends a start timing signal, waits for the acquisition of the termination signal, and obtains the signal waiting time parameter; according to the signal, etc. The waiting time setting returns the standard value of the signal waiting time; if the signal waiting time value does not meet the waiting time standard value, the cable error information signal is output, and the cable error information signal is sent as an abnormal signal; if an abnormal signal is sensed, a maintenance signal is sent; if the waiting time value meets the waiting time standard value, the signal transmission information is packaged and sent as a traveling wave data signal parameter to detect the abnormal signal; if an abnormal signal is detected, the two interconnected power transmission ports send detection electrical signals to each other to obtain the location information of the damaged point, and then enhance the strength of the traveling wave signal, so that the traveling wave will not attenuate with the increase of distance, making the measurement of the traveling wave more accurate; at the same time, whether the cable is faulty is determined based on whether the detection returns a signal; if a fault occurs, a detection electrical signal is sent through the power transmission port, and the damaged point is accurately located through information such as the voltage in the cable, thereby facilitating the maintenance of the cable.

[0234] In another embodiment, the traveling wave ranging device based on traveling wave positioning can be configured separately from the central processing unit 9100. For example, the data composite transmission device based on the traveling wave ranging device based on traveling wave positioning can be configured as a chip connected to the central processing unit 9100, and the function of the traveling wave ranging method based on traveling wave positioning can be realized through the control of the central processing unit.

[0235] like Fig.13 As shown, the electronic device 9600 may also include: a communication module 9110, an input unit 9120, an audio processor 9130, a display 9160, and a power supply 9170. It is worth noting that the electronic device 9600 does not necessarily have to include Fig.13 In addition, the electronic device 9600 may also include Fig.13 For components not shown, reference may be made to the prior art.

[0236] like Fig.13As shown, the central processing unit 9100 is sometimes also referred to as a controller or an operation control, and may include a microprocessor or other processor device and / or logic device. The central processing unit 9100 receives input and controls the operation of various components of the electronic device 9600.

[0237] The memory 9140 may be, for example, one or more of a cache, a flash memory, a hard drive, a removable medium, a volatile memory, a non-volatile memory or other suitable devices. The above-mentioned information related to the failure may be stored, and a program for executing the relevant information may also be stored. The CPU 9100 may execute the program stored in the memory 9140 to implement information storage or processing, etc.

[0238] The input unit 9120 provides input to the central processing unit 9100. The input unit 9120 is, for example, a key or a touch input device. The power supply 9170 is used to provide power to the electronic device 9600. The display 9160 is used to display display objects such as images and texts. The display may be, for example, an LCD display, but is not limited thereto.

[0239] The memory 9140 may be a solid-state memory, such as a read-only memory (ROM), a random access memory (RAM), a SIM card, etc. It may also be a memory that saves information even when the power is off, can be selectively erased, and is provided with more data, examples of which are sometimes referred to as EPROMs, etc. The memory 9140 may also be some other type of device. The memory 9140 includes a buffer memory 9141 (sometimes referred to as a buffer). The memory 9140 may include an application / function storage unit 9142, which is used to store application programs and function programs or processes for executing the operation of the electronic device 9600 through the central processor 9100.

[0240] The memory 9140 may also include a data storage unit 9143 for storing data, such as contacts, digital data, pictures, sounds, and / or any other data used by the electronic device. The driver storage unit 9144 of the memory 9140 may include various drivers for communication functions of the electronic device and / or for executing other functions of the electronic device (such as messaging applications, address book applications, etc.).

[0241] The communication module 9110 is a transmitter / receiver 9110 that sends and receives signals via an antenna 9111. The communication module (transmitter / receiver) 9110 is coupled to the central processor 9100 to provide input signals and receive output signals, which may be the same as the case of a conventional mobile communication terminal.

[0242] Based on different communication technologies, multiple communication modules 9110 may be provided in the same electronic device, such as a cellular network module, a Bluetooth module and / or a wireless LAN module. The communication module (transmitter / receiver) 9110 is also coupled to a speaker 9131 and a microphone 9132 via an audio processor 9130 to provide an audio output via the speaker 9131 and receive an audio input from the microphone 9132, thereby realizing a common telecommunication function. The audio processor 9130 may include any suitable buffer, decoder, amplifier, etc. In addition, the audio processor 9130 is also coupled to the central processor 9100, so that recording can be performed on the local machine through the microphone 9132, and the sound stored on the local machine can be played through the speaker 9131.

[0243] The embodiments of the present application also provide a computer-readable storage medium capable of implementing all the steps of the traveling wave ranging method based on traveling wave positioning in the above embodiments, where the execution subject is a server or a client. The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, all the steps of the traveling wave ranging method based on traveling wave positioning in the above embodiments are implemented. For example, when the processor executes the computer program, the following steps are implemented:

[0244] S101: Collecting a traveling wave data signal received by an uplink port to obtain traveling wave data parameters;

[0245] S102: inputting the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment;

[0246] S103: collecting the enhanced and determined traveling wave data signal to obtain enhanced traveling wave data parameters;

[0247] S104: Generate an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter and send it out, and obtain a signal waiting time parameter to perform traveling wave ranging.

[0248] From the above description, it can be seen that the traveling wave ranging method and device based on traveling wave positioning provided by the present application can collect cable information parameters received by the power transmission port to obtain a cable data parameter set; collect traveling wave data signal parameters received by the upstream port to obtain a traveling wave data parameter set; according to the traveling wave data parameter set, set the traveling wave enhancement standard judgment parameters; substitute the traveling wave data parameter set into the traveling wave enhancement standard judgment parameters to obtain the enhancement result parameters; collect the traveling wave data signal parameters after enhancement judgment to obtain enhanced traveling wave data parameters; package the enhanced traveling wave data parameters and the traveling wave data parameter set into an enhanced traveling wave data packet for output; the downstream port waits for the upstream port to receive the traveling wave data signal parameters; sends the enhanced traveling wave data packet as the traveling wave data signal parameters; sends the traveling wave data, sends a start timing signal, waits for the acquisition of the termination signal, and obtains the signal waiting time parameter; according to the signal, etc. The waiting time setting returns the standard value of the signal waiting time; if the signal waiting time value does not meet the waiting time standard value, the cable error information signal is output, and the cable error information signal is sent as an abnormal signal; if an abnormal signal is sensed, a maintenance signal is sent; if the waiting time value meets the waiting time standard value, the signal transmission information is packaged and sent as a traveling wave data signal parameter to detect the abnormal signal; if an abnormal signal is detected, the two interconnected power transmission ports send detection electrical signals to each other to obtain the location information of the damaged point, and then enhance the strength of the traveling wave signal, so that the traveling wave will not attenuate with the increase of distance, making the measurement of the traveling wave more accurate; at the same time, whether the cable is faulty is determined based on whether the detection returns a signal; if a fault occurs, a detection electrical signal is sent through the power transmission port, and the damaged point is accurately located through information such as the voltage in the cable, thereby facilitating the maintenance of the cable.

[0249] It will be appreciated by those skilled in the art that embodiments of the present invention may be provided as methods, devices, or computer program products. Therefore, the present invention may take the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0250] The present invention is described with reference to flowcharts and / or block diagrams of methods, devices (apparatus), and computer program products according to embodiments of the present invention. It should be understood that each process and / or block in the flowchart and / or block diagram, as well as the combination of processes and / or blocks in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0251] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0252] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0253] The present invention uses specific embodiments to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present invention.

Claims

1. A traveling wave ranging method based on traveling wave positioning, characterized in that: include: Collecting the traveling wave data signal received by the uplink port to obtain the traveling wave data parameters; Inputting the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment; Collecting the enhanced and judged traveling wave data signal to obtain enhanced traveling wave data parameters; An enhanced traveling wave data packet is generated and sent out according to the traveling wave data parameter and the enhanced traveling wave data parameter, and a signal waiting time parameter is obtained to perform traveling wave ranging.

2. The traveling wave ranging method based on traveling wave positioning according to claim 1, characterized in that: The traveling wave data parameters include traveling wave amplitude attenuation data parameters, traveling wave phase velocity attenuation data parameters and traveling wave transmission velocity data parameters; The collecting of the traveling wave data signal received by the uplink port to obtain the traveling wave data parameter includes: Collecting a traveling wave amplitude attenuation signal to obtain the traveling wave amplitude attenuation data parameter; Collecting a traveling wave phase velocity attenuation signal to obtain the traveling wave phase velocity attenuation data parameter; The traveling wave transmission speed signal is collected to obtain the traveling wave transmission speed data parameter.

3. The traveling wave ranging method based on traveling wave positioning according to claim 1, characterized in that: The step of inputting the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment includes: Setting the traveling wave enhancement standard judgment parameter according to the traveling wave data parameter; Constructing the traveling wave enhancement judgment model according to the traveling wave data parameters and the traveling wave enhancement standard judgment parameters; The traveling wave enhancement judgment model is used to perform enhancement judgment to obtain enhancement result parameters.

4. The traveling wave ranging method based on traveling wave positioning according to claim 1, characterized in that: The step of generating and sending an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter, and obtaining a signal waiting time parameter to perform traveling wave ranging includes: Determining whether it is necessary to enhance the traveling wave signal according to the traveling wave data parameter and the enhanced traveling wave data parameter; If the traveling wave signal needs to be enhanced, the enhanced value is output, and the enhanced value, the enhanced traveling wave data parameter and the traveling wave data parameter are packaged into the enhanced traveling wave data packet and sent out.

5. The traveling wave ranging method based on traveling wave positioning according to claim 1, characterized in that: The step of generating and sending an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter, and obtaining a signal waiting time parameter to perform traveling wave ranging includes: Collecting the emission signal generated when the enhanced traveling wave data packet is emitted, and recording the start time to obtain the signal emission time point; Collecting the emitted signal generated when the enhanced traveling wave data packet is terminated, and recording the end time to obtain the signal end time point; The signal waiting time parameter is determined according to the signal sending time point and the signal ending time point.

6. The traveling wave ranging method based on traveling wave positioning according to claim 5, characterized in that: The step of generating and sending an enhanced traveling wave data packet according to the traveling wave data parameter and the enhanced traveling wave data parameter, and obtaining a signal waiting time parameter to perform traveling wave ranging includes: Return the signal waiting time standard value according to the signal waiting time parameter setting; Constructing a fault judgment model according to the return signal waiting time standard value and the signal waiting time parameter; The return signal waiting time standard value and the signal waiting time parameter are input into the fault judgment model to obtain the fault judgment result parameter to perform traveling wave ranging.

7. A traveling wave ranging device based on traveling wave positioning, characterized in that: include: An initial parameter acquisition unit, used for collecting the traveling wave data signal received by the uplink port to obtain the traveling wave data parameters; An enhancement judgment unit, used for inputting the traveling wave data parameters into a pre-built traveling wave enhancement judgment model to perform enhancement judgment; An enhanced parameter acquisition unit, used for collecting the traveling wave data signal after enhanced judgment to obtain enhanced traveling wave data parameters; The traveling wave ranging unit is used to generate and send out an enhanced traveling wave data packet according to the traveling wave data parameters and the enhanced traveling wave data parameters, and obtain a signal waiting time parameter to perform traveling wave ranging.

8. The traveling wave ranging device based on traveling wave positioning according to claim 7, characterized in that: The traveling wave data parameters include traveling wave amplitude attenuation data parameters, traveling wave phase velocity attenuation data parameters and traveling wave transmission velocity data parameters; The initial parameter acquisition unit includes: An amplitude parameter acquisition module is used to collect the traveling wave amplitude attenuation signal and obtain the traveling wave amplitude attenuation data parameter; A wave phase velocity acquisition module is used to collect the traveling wave phase velocity attenuation signal and obtain the traveling wave phase velocity attenuation data parameters; The transmission speed acquisition module is used to collect the traveling wave transmission speed signal and obtain the traveling wave transmission speed data parameters.

9. The traveling wave ranging device based on traveling wave positioning according to claim 7, characterized in that: The enhanced judgment unit comprises: A standard parameter setting module, used for setting the traveling wave enhancement standard judgment parameters according to the traveling wave data parameters; A judgment model building module, used to build the traveling wave enhancement judgment model according to the traveling wave data parameters and the traveling wave enhancement standard judgment parameters; The enhancement judgment module is used to perform enhancement judgment using the traveling wave enhancement judgment model to obtain enhancement result parameters.

10. The traveling wave ranging device based on traveling wave positioning according to claim 7, characterized in that: The traveling wave ranging unit comprises: An enhanced signal determination module, used for determining whether the traveling wave signal needs to be enhanced according to the traveling wave data parameter and the enhanced traveling wave data parameter; The packing and sending module is used for outputting an enhancement value if the traveling wave signal needs to be enhanced, and packing the enhancement value, the enhanced traveling wave data parameter and the traveling wave data parameter into the enhanced traveling wave data packet for sending.

11. The traveling wave ranging device based on traveling wave positioning according to claim 7, characterized in that: The traveling wave ranging unit comprises: The sending time acquisition module is used to collect the sending signal generated when the enhanced traveling wave data packet is sent, and record the start time to obtain the signal sending time point; An end time acquisition module is used to collect the emitted signal generated when the enhanced traveling wave data packet ends, and record the end time to obtain the signal end time point; The waiting time determination module is used to determine the signal waiting time parameter according to the signal sending time point and the signal ending time point.

12. The traveling wave ranging device based on traveling wave positioning according to claim 11, characterized in that: The traveling wave ranging unit comprises: A waiting standard determination module, used for returning a signal waiting time standard value according to the signal waiting time parameter setting; A fault model building module, used to build a fault judgment model according to the return signal waiting time standard value and the signal waiting time parameter; The traveling wave ranging module is used to input the return signal waiting time standard value and the signal waiting time parameter into the fault judgment model to obtain the fault judgment result parameter for performing traveling wave ranging.

13. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that: When the processor executes the program, the steps of the traveling wave ranging method based on traveling wave positioning according to any one of claims 1 to 6 are implemented.

14. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the traveling wave ranging method based on traveling wave positioning described in any one of claims 1 to 6 are implemented.

15. A computer program product comprising a computer program / instructions, characterized in that When the computer program / instructions are executed by a processor, the steps of the traveling wave ranging method based on traveling wave positioning as described in any one of claims 1 to 6 are implemented.

Images