A fault location device for collecting traveling wave current

Abstract

This utility model relates to the field of line fault location technology, specifically to a fault location device for collecting traveling wave current. The device includes a traveling wave sensor, installed at both ends of a specific transmission line, for capturing traveling wave signals generated by a transmission line fault; a data acquisition module, connected to the traveling wave sensor, for acquiring the captured traveling wave signals and performing digital processing; a traveling wave fault feature analyzer, connected to the data acquisition module, for determining the fault location and traveling wave amplitude; and a communication module, connected to the traveling wave fault feature analyzer, for transmitting the traveling wave amplitude and fault location to a task scheduling module. The task scheduling module adjusts the emergency repair management area based on the traveling wave amplitude and fault location. This fault location device for collecting traveling wave current can accurately locate the fault location and allocate emergency repair tasks to the most suitable emergency repair management area, offering the advantage of high repair efficiency.

Description

Technical Field

[0001] This utility model relates to the field of line fault location technology, specifically to a fault location device for collecting traveling wave current. Background Technology

[0002] Traveling wave current refers to the phenomenon where current propagates along a conductor in the form of a traveling wave when electromagnetic waves propagate through it. In high-frequency circuits, due to the extremely rapid changes in current and voltage, the current and voltage at different locations at the same moment are no longer the same, causing the current to propagate in the form of a traveling wave. This phenomenon has significant application value in power systems, especially in fault location, where traveling wave current has become a highly efficient and accurate fault detection technique.

[0003] Currently, the application of traveling wave current in power system fault location is mainly based on the propagation characteristics of traveling waves. When a power line fault occurs, the voltage and current at the fault point change abruptly, generating high-frequency transient traveling waves. These traveling wave signals propagate from the fault point to both ends of the line, and are reflected and refracted when they encounter points of impedance discontinuity (such as line ends or branch points). By measuring the propagation time of the traveling wave signal, the location of the fault point can be quickly determined. Subsequently, the task scheduling module schedules designated personnel within the management area based on the fault point location for management.

[0004] Despite the advantages of traveling wave fault feature analyzers, such as short positioning time, high accuracy, and wide applicability, some problems still exist in actual scheduling tasks:

[0005] Tasks are assigned only to designated management areas. However, this model leads to uneven task distribution. For example, staff in some areas may be unable to handle newly assigned faulty projects promptly due to urgent tasks, while staff in other areas may have lighter workloads. This unequal task allocation prolongs response times for fault handling, resulting in unnecessary problems. Utility Model Content

[0006] The purpose of this invention is to overcome the shortcomings of the prior art and provide a fault location device for collecting traveling wave current. This fault location device can accurately locate the fault point and assign the emergency repair task to the most suitable emergency repair management area, thus having the advantage of high emergency repair efficiency.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A fault location device for acquiring traveling wave current is provided, comprising:

[0009] Traveling wave sensors are installed at both ends of a specific power transmission line to capture traveling wave signals generated by power transmission line faults.

[0010] A data acquisition module, connected to the traveling wave sensor, is used to acquire the traveling wave signal captured by the traveling wave sensor and perform digital processing.

[0011] A traveling wave fault characteristic analyzer, connected to the data acquisition module, is used to determine the location of the fault point and the amplitude of the traveling wave.

[0012] The communication module, connected to the traveling wave fault characteristic analyzer, is used to transmit the traveling wave amplitude and fault location to the task scheduling module, which adjusts the emergency repair management area based on the traveling wave amplitude and fault location.

[0013] In some embodiments, the frequency response range of the traveling wave sensor is 1 kHz to 2 MHz.

[0014] In some implementations, the task scheduling module outputs the corresponding emergency repair level based on the traveling wave amplitude. The higher the emergency repair level, the higher the urgency of the emergency repair and the larger the corresponding emergency repair management area.

[0015] In some implementations, the distance between adjacent emergency repair management areas differs by 10 kilometers.

[0016] In some implementations, the task scheduling module is further equipped with a Zeo route planner, which outputs a travel route based on the location of the fault point.

[0017] In some implementations, the communication module is a wireless network.

[0018] In some embodiments, the traveling wave fault characteristic analysis instrument is the ROL-DFD100 transmission line traveling wave fault location device.

[0019] The advantages of this utility model for a fault location device for collecting traveling wave current are as follows:

[0020] This utility model discloses a fault location device for collecting traveling wave current. It is connected to a task scheduling module via a traveling wave fault feature analyzer. The traveling wave fault feature analyzer determines the fault location point and the traveling wave amplitude. The task scheduling module uses its own scheduling function to allocate different management areas based on the traveling wave amplitude and the fault location. This avoids the problem of losses caused by the small emergency repair management area and untimely allocation of manpower. If the traveling wave amplitude is lower, the emergency repair urgency is relatively low, and it can be mainly managed by the current management area. After the management area is determined, a suitable emergency repair team is selected within the management area. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the working operation of a fault location device for collecting traveling wave current according to an embodiment of the present invention. Detailed Implementation

[0022] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0023] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0024] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] Example 1

[0026] The fault location device for acquiring traveling wave current provided in this embodiment includes:

[0027] Traveling wave sensors are installed at both ends of a specific power transmission line to capture traveling wave signals generated by power transmission line faults.

[0028] Traveling wave sensors are available on the market. Their core function is to capture transient traveling wave signals generated at fault points in power lines. These signals include voltage traveling waves and current traveling waves.

[0029] A data acquisition module, connected to the traveling wave sensor, is used to acquire the traveling wave signal captured by the traveling wave sensor and perform digital processing.

[0030] The data acquisition module is a standard data acquisition component that can be purchased commercially. The data acquisition module samples and digitizes the traveling wave signal, and performs preprocessing such as filtering and amplification to facilitate subsequent processing.

[0031] A traveling wave fault characteristic analyzer, connected to the data acquisition module, is used to analyze the characteristics of the traveling wave signal and output the traveling wave amplitude based on the characteristics of the traveling wave signal, and calculate the fault location using a ranging formula; it is also connected to the data acquisition module to determine the fault location and the traveling wave amplitude.

[0032] The traveling wave fault feature analyzer is a conventional traveling wave fault feature analyzer. In the application of power transmission line fault location, it is often used to analyze the characteristics of the traveling wave signal and output the traveling wave amplitude and fault location based on the characteristics of the traveling wave signal.

[0033] Different faults generate different traveling wave signals. For example, when a fault occurs in a power transmission line or cable (such as a short circuit or grounding), a sudden change in voltage and current occurs at the fault point, thereby exciting high-frequency transient traveling waves. These traveling waves propagate along the line to both ends at near the speed of light and are reflected at points of impedance discontinuity (such as the fault point or the end of the line). Therefore, by analyzing the characteristics of the traveling wave signal, the amplitude of the traveling wave can be obtained; the more severe the fault, the larger the amplitude of the traveling wave signal. For example, in high-resistance grounding faults or zero-crossing faults, the amplitude of the traveling wave signal is relatively small, while in direct grounding faults, the amplitude of the traveling wave signal increases significantly, indicating a more severe fault.

[0034] The communication module, connected to the traveling wave fault feature analyzer, is used to transmit the traveling wave amplitude and fault location to the task scheduling module. The task scheduling module adjusts the emergency repair management area range based on the traveling wave amplitude and fault location. The lower the traveling wave amplitude, the lower the risk, and the larger the corresponding emergency repair management area range. The emergency repair management area range is the area radiated by the fault point.

[0035] The task scheduling module is a commercially available product, such as Worktile, PingCode, and SchedulerX. These commercial task scheduling modules can automatically schedule tasks based on the input ripple amplitude.

[0036] Therefore, during operation, the management area is determined by the traveling wave amplitude, and then tasks are assigned to the repair teams within the determined management area based on their workload.

[0037] Specifically, fault handling tasks are dynamically allocated based on their urgency and estimated completion time. If all teams within a management area have a high workload, cross-regional task scheduling can be considered to ensure timely fault handling.

[0038] Specifically, the communication module transmits fault location and traveling wave amplitude information from the traveling wave fault characteristic analyzer to the computer. This module enables real-time transmission of fault information, ensuring timely and efficient fault handling. The traveling wave amplitude is an indicator categorized based on the severity and urgency of the fault; a lower amplitude indicates a lower risk. In the task scheduling module, the traveling wave amplitude is used as a crucial basis for allocating emergency repair management areas. A larger amplitude corresponds to a larger emergency repair management area, allowing for more selection and more timely problem resolution.

[0039] Faults with low traveling wave amplitudes correspond to smaller emergency repair management areas, allowing for the handling of more urgent issues by repair teams closer to the fault location. Therefore, tasks should be rationally allocated to the appropriate repair teams based on the traveling wave amplitude and the scope of the emergency repair management area.

[0040] In this embodiment, the frequency response range of the traveling wave sensor is 1kHz to 2MHz. The frequency response range of the traveling wave sensor is sufficient to handle the frequency responses caused by various faults.

[0041] Based on practice, classifying the relevant traveling wave amplitude into 10 levels can cover a management area of ​​approximately 100 kilometers, enabling better fault handling.

[0042] In this embodiment, the distance difference between adjacent emergency repair management areas is 10 kilometers. This 10-kilometer distance difference effectively ensures processing efficiency.

[0043] In this embodiment, the task scheduling module is further equipped with a Zeo route planner, which outputs a walking route based on the location of the fault point.

[0044] In this embodiment, the Zeo route planner is equipped with a map service unit such as Baidu Maps, which plans a walking route based on the location of the fault point.

[0045] The circuit planning module can generate circuits in a timely manner, making it easier for the emergency repair team to carry out repairs.

[0046] Specifically, the map service unit is a core component of the route planning module. Its function is to plan the optimal walking route based on the coordinates of the fault point provided by the fault point location identification unit. Furthermore, it combines the geographical location information from the monitoring terminal to determine the specific location of the fault point. Based on the fault point location and the current location of the repair team, the map service unit plans the shortest or optimal path. The route planning module can dynamically adjust the walking route based on real-time traffic information and the dynamic location of the repair team.

[0047] In this embodiment, the communication module is a wireless network.

[0048] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0049] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0050] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0051] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0052] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A fault location device for acquiring traveling wave current, characterized in that, include: Traveling wave sensors are installed at both ends of the power transmission line to capture traveling wave signals generated by power transmission line faults. A data acquisition module, connected to the traveling wave sensor, is used to acquire the traveling wave signal captured by the traveling wave sensor and perform digital processing. A traveling wave fault characteristic analyzer, connected to the data acquisition module, is used to determine the location of the fault point and the amplitude of the traveling wave. The communication module, connected to the traveling wave fault characteristic analyzer, is used to transmit the traveling wave amplitude and fault location to the task scheduling module, which adjusts the emergency repair management area based on the traveling wave amplitude and fault location.

2. The fault location device for acquiring traveling wave current according to claim 1, characterized in that, The frequency response range of the traveling wave sensor is 1kHz to 2MHz.

3. The fault location device for acquiring traveling wave current according to claim 2, characterized in that, The task scheduling module outputs the corresponding emergency repair level through the traveling wave amplitude. The higher the emergency repair level, the higher the urgency of the emergency repair and the larger the corresponding emergency repair management area.

4. The fault location device for acquiring traveling wave current according to claim 3, characterized in that, The distance between adjacent emergency repair management areas is 10 kilometers.

5. The fault location device for acquiring traveling wave current according to claim 4, characterized in that, The task scheduling module also includes a Zeo route planner, which outputs a travel route based on the location of the fault point.

6. The fault location device for acquiring traveling wave current according to claim 1, characterized in that, The communication module is a wireless network.

7. The fault location device for acquiring traveling wave current according to claim 1, characterized in that, The traveling wave fault characteristic analysis instrument is the ROL-DFD100 transmission line traveling wave fault ranging device.

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