Grounding Wire Discovery Method and System Based on Real-Time State Topological Relationship of Grounding Wires

Abstract

The present invention relates to a method and system for discovering grounding wires based on the real-time state topological relationship of grounding wires. The key points of the technical solution are as follows: obtaining the characteristic information of each grounding wire; generating a plurality of characteristic points according to each of the characteristic information and constructing a first undirected graph; using a topological algorithm to match a preset anti-error rule through the first undirected graph to judge the accuracy of the grounding state of each characteristic point; if the grounding state of the characteristic point is judged to be correct, retaining the characteristic point; if the grounding state of the characteristic point is judged to be incorrect, removing the characteristic point; constructing and displaying a second undirected graph according to all the remaining characteristic points; the present application has the advantage of facilitating the judgment of the grounding state.

Description

Technical Field

[0001] The present invention relates to the technical field of electrical engineering, and more specifically, it relates to a method and system for discovering grounding wires based on the real-time state topological relationship of grounding wires. Background Art

[0002] Since the distribution network directly faces a large number of end-users, its grid structure is complex and the fault probability is high. Due to the low level of distribution network automation, the speed of fault location, isolation, and power supply restoration is also slow. Single-phase grounding fault is one of the common faults in the power grid system, and the probability of single-phase grounding fault occurring in the non-directly grounded neutral system is the highest. If the fault can be isolated in time after a permanent grounding fault occurs, it can not only maintain its advantage of being able to clear instantaneous grounding faults by itself, but also avoid the potential safety hazards of the distribution network operating with a grounding point for a long time. Therefore, the rapid identification and location of faults during power grid operation have become one of the most important means to ensure the safe and stable operation of the power grid. Summary of the Invention

[0003] Aiming at the deficiencies of the existing technology, the purpose of the present invention is to provide a method and system for discovering grounding wires based on the real-time state topological relationship of grounding wires, which has the advantage of facilitating the judgment of the grounding state.

[0004] The above technical purpose of the present invention is achieved through the following technical solutions: A method for discovering grounding wires based on the real-time state topological relationship of grounding wires, including:

[0005] Obtaining the characteristic information of each grounding wire;

[0006] Generating a plurality of characteristic points according to each of the characteristic information and constructing a first undirected graph;

[0007] Using the topological algorithm to match the preset anti-error rules through the first undirected graph to judge the accuracy of the grounding state of each characteristic point; if the grounding state of the characteristic point is judged to be correct, retain the characteristic point; if the grounding state of the characteristic point is judged to be incorrect, eliminate the characteristic point;

[0008] Constructing and displaying a second undirected graph according to all the remaining characteristic points.

[0009] Optionally, the obtaining the characteristic information of each grounding wire includes:

[0010] Obtaining the basic information of the grounding device;

[0011] Collecting the grounding wire state information through the grounding device;

[0012] Collecting the positioning information of the grounding device;

[0013] Obtaining the position information at the time of generating the grounding behavior according to the grounding wire state information and the positioning information of the grounding device.

[0014] Optionally, the step of collecting the status information of the grounding wire through the grounding device includes:

[0015] Generating single-sex charges through the grounding device;

[0016] Grounding the grounding device;

[0017] Measuring the grounding current and potential difference generated during the movement of the single-sex charges;

[0018] Obtaining the grounding resistance based on the grounding current and a preset potential difference;

[0019] Making a judgment based on the grounding resistance to obtain the status information of the grounding wire.

[0020] Optionally, the step of making a judgment based on the grounding resistance includes:

[0021] Comparing the grounding resistance with a preset resistance threshold range; if the grounding resistance is within the preset threshold range, sending out the status information indicating that the grounding wire is reliable; if the grounding resistance is outside the preset threshold range, sending out the status information indicating that the grounding wire is unreliable.

[0022] Optionally, the step of generating multiple feature points based on each of the feature information and constructing a first undirected graph includes:

[0023] Obtaining the detection points of each grounding wire based on the positioning information of the grounding device

[0024] Obtaining the grounding points of each grounding wire based on the grounding resistance of each grounding wire;

[0025] Drawing a first undirected graph based on each of the grounding points and each detection point.

[0026] Optionally, the step of using a topological algorithm to match a preset anti-error rule through the first undirected graph to judge the accuracy of the grounding status of each feature point includes:

[0027] Matching each feature point in the first undirected graph with a topological algorithm according to the power grid operation mode and the real-time grounding status; if they match, it is determined to be error-free; if they do not match, it is determined to be in error.

[0028] A grounding wire discovery system based on the real-time state topological relationship of the grounding wire includes: an information acquisition module for acquiring the feature information of each grounding wire;

[0029] A first graph construction module for generating multiple feature points based on each of the feature information and constructing a first undirected graph;

[0030] A topology judgment module, which is used to utilize a topology algorithm to match a preset anti-error rule through the first undirected graph, and judge the accuracy of the grounding status of each feature point; if the grounding status of the feature point is judged to be correct, the feature point is retained; if the grounding status of the feature point is judged to be incorrect, the feature point is removed;

[0031] A second graph construction module, which is used to construct and display a second undirected graph according to all the remaining feature points.

[0032] The information acquisition module includes:

[0033] A basic information acquisition unit, which is used to acquire the basic information of the grounding device;

[0034] A grounding status acquisition unit, which is used to acquire the grounding wire status information through the grounding device;

[0035] A positioning acquisition unit, which is used to collect the positioning information of the grounding device;

[0036] A grounding position acquisition unit, which is used to obtain the position information when the grounding behavior occurs according to the grounding wire status information and the positioning information of the grounding device.

[0037] The grounding status acquisition unit includes:

[0038] A charge generation unit, which is used to generate unipolar charges through the grounding device;

[0039] A grounding control unit, which is used to ground the grounding device;

[0040] A potential measurement unit, which is used to measure the grounding current and potential difference generated during the movement of the unipolar charges;

[0041] A resistance calculation unit, which is used to obtain the grounding resistance according to the grounding current and the preset potential difference;

[0042] A grounding judgment unit, which is used to make a judgment according to the grounding resistance to obtain the grounding wire status information.

[0043] The first graph construction module includes:

[0044] A detection point determination unit, which is used to obtain the detection points of each grounding wire according to the positioning information of the grounding device;

[0045] A grounding point determination unit, which is used to obtain the grounding points of each grounding wire according to the grounding resistance of each grounding wire;

[0046] A first drawing unit, which is used to draw a first undirected graph according to each of the grounding points and each of the detection points.

[0047] In summary, the present invention has the following beneficial effects: First, collect the characteristic information of each grounding wire that can be used for the topology algorithm, and then construct a first undirected graph based on these characteristic information; and match the undirected graph with the preset anti-error rules through the topology algorithm, and judge the accuracy of the grounding state of each characteristic point according to the matching degree. Since there may be incorrect information in the collected characteristic information, after excluding the incorrect information, construct a second undirected graph based on the remaining characteristic points and display it. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] Figure 1 It is a schematic flow chart of the grounding wire discovery method based on the real-time state topology relationship of the grounding wire of the present invention;

[0049] Figure 2 It is a structural block diagram of the grounding wire discovery system based on the real-time state topology relationship of the grounding wire of the present invention;

[0050] Figure 3 It is an internal structure diagram of the computer device in the embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0051] In order to make the objectives, features, and advantages of the present invention more obvious and understandable, the following will describe the specific embodiments of the present invention in detail with reference to the accompanying drawings. Several embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein.

[0052] In the present invention, unless otherwise clearly defined and limited, terms such as "installation", "connection", "connection", "fixation", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features.

[0053] In the present invention, unless otherwise clearly specified and defined, the first feature being "above" or "below" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but are in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature being "below", "beneath" and "underneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicates that the horizontal height of the first feature is lower than that of the second feature. The terms "vertical", "horizontal", "left", "right", "above", "below" and similar expressions are only for the purpose of illustration, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0054] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0055] The present invention provides a method for discovering grounding wires based on the real-time state topological relationship of grounding wires, as Figure 1 shown, including:

[0056] Step 100: Obtain the characteristic information of each grounding wire;

[0057] Step 200: Generate a plurality of feature points according to each of the characteristic information and construct a first undirected graph;

[0058] Step 300: Use the topological algorithm to match the preset anti-error rules through the first undirected graph to judge the accuracy of the grounding state of each feature point; if the grounding state of the feature point is judged to be correct, retain the feature point; if the grounding state of the feature point is judged to be incorrect, eliminate the feature point;

[0059] Step 400: Construct and display a second undirected graph according to all the remaining feature points.

[0060] In practical applications, first collect the characteristic information of each grounding wire that can be used for the topological algorithm, and then construct a first undirected graph according to these characteristic information; and match the undirected graph with the preset anti-error rules through the topological algorithm to judge the accuracy of the grounding state of each feature point. Since the collected characteristic information may contain incorrect information, after excluding the incorrect information, construct a second undirected graph according to the remaining feature points and display it.

[0061] Further, the obtaining of the characteristic information of each grounding wire includes:

[0062] Obtain the basic information of the grounding device;

[0063] Collect the status information of the grounding wire through the grounding device;

[0064] Collect the positioning information of the grounding device;

[0065] Obtain the position information when the grounding behavior occurs based on the status information of the grounding wire and the positioning information of the grounding device.

[0066] In practical applications,

[0067] Optionally, the collecting the status information of the grounding wire through the grounding device includes:

[0068] Generate unipolar charges through the grounding device;

[0069] Ground the grounding device;

[0070] Measure the grounding current and potential difference generated during the movement of the unipolar charges;

[0071] Obtain the grounding resistance based on the grounding current and the preset potential difference;

[0072] Make a judgment based on the grounding resistance to obtain the status information of the grounding wire.

[0073] Among them, the making a judgment based on the grounding resistance includes:

[0074] Compare the grounding resistance with the preset resistance threshold range; if the grounding resistance is within the preset threshold range, send the status information indicating that the grounding wire is reliable; if the grounding resistance is outside the preset threshold range, send the status information indicating that the grounding wire is unreliable.

[0075] In practical applications, due to the unipolarity of the charges, in order to avoid the influence of charges with different polarities on the detection data, unipolar charges, that is, unipolar charges, are used; after grounding the grounding device, under the tension of the charges, they are quickly released into the ground, and current and potential difference are generated during the movement of the charges. The grounding resistance of the grounding wire can be obtained through the current and potential difference, and the grounding resistance is compared with the preset threshold range for judgment, so as to infer whether the grounding is reliable, that is, to obtain the status information of the grounding wire.

[0076] Furthermore, the generating a plurality of feature points according to each of the feature information and constructing an undirected graph includes:

[0077] Obtain the detection points of each grounding wire according to the positioning information of the grounding device

[0078] Obtain the grounding points of each grounding wire according to the grounding resistance of each grounding wire;

[0079] Draw an undirected graph according to each of the grounding points and each of the detection points.

[0080] In practical applications, during the process of detecting at the docking location according to the wiring device, the detection points of the grounding device are obtained, and the corresponding grounding points are obtained based on the grounding resistance, so as to draw and organize the grounding wires to obtain a first undirected graph.

[0081] Furthermore, using the topological algorithm to match the preset anti-error rules through the first undirected graph to judge the accuracy of the grounding status of each feature point includes:

[0082] Using the topological algorithm to match each feature point in the first undirected graph according to the power grid operation mode and the real-time grounding status; if they match, it is determined to be error-free; if they do not match, it is determined to be in error.

[0083] In practical applications, a comprehensive anti-error check is carried out according to the power grid operation mode and the real-time grounding status, so as to realize the function of topological anti-error.

[0084] As Figure 2 shown, the present invention also provides a grounding wire discovery system based on the topological relationship of the real-time status of the grounding wire, including: an information acquisition module 10 for acquiring the characteristic information of each grounding wire;

[0085] A first graph construction module 20 for generating a plurality of feature points according to each of the characteristic information and constructing a first undirected graph;

[0086] A topological judgment module 30 for using the topological algorithm to match the preset anti-error rules through the first undirected graph to judge the accuracy of the grounding status of each feature point; if the grounding status of the feature point is judged to be error-free, the feature point is retained; if the grounding status of the feature point is judged to be in error, the feature point is eliminated;

[0087] A second graph construction module 40 for constructing and displaying a second undirected graph according to all the remaining feature points.

[0088] Furthermore, the information acquisition module 10 includes:

[0089] A basic information acquisition unit for acquiring the basic information of the grounding device;

[0090] A grounding status acquisition unit for collecting the grounding wire status information through the grounding device;

[0091] A positioning acquisition unit for collecting the positioning information of the grounding device;

[0092] A grounding position acquisition unit for obtaining the position information at the time of generating the grounding behavior according to the grounding wire status information and the positioning information of the grounding device.

[0093] Furthermore, the grounding status acquisition unit includes:

[0094] A charge generation unit for generating unipolar charges through a grounding device;

[0095] A grounding control unit for grounding the grounding device;

[0096] A potential measurement unit for measuring the grounding current and potential difference generated during the movement of the unipolar charges;

[0097] A resistance calculation unit for obtaining the grounding resistance based on the grounding current and a preset potential difference;

[0098] A grounding judgment unit for making a judgment based on the grounding resistance to obtain the grounding wire status information.

[0099] Further, the first composition module 20 includes:

[0100] A detection point determination unit for obtaining the detection points of each grounding wire according to the positioning information of the grounding device;

[0101] A grounding point determination unit for obtaining the grounding points of each grounding wire according to the grounding resistance of each grounding wire;

[0102] A first drawing unit for drawing a first undirected graph based on each of the grounding points and each of the detection points.

[0103] For the specific limitations of the grounding wire discovery system based on the real-time state topological relationship of the grounding wire, reference can be made to the limitations of the grounding wire discovery method based on the real-time state topological relationship of the grounding wire in the above text, which will not be elaborated here. Each module in the above grounding wire discovery system based on the real-time state topological relationship of the grounding wire can be implemented in whole or in part by software, hardware, and their combination. The above modules can be embedded in or independent of the processor in the computer device in the form of hardware, or stored in the memory of the computer device in the form of software, so that the processor can call and execute the operations corresponding to the above modules.

[0104] In one embodiment, a computer device is provided. The computer device can be a server, and its internal structure diagram can be as Figure 3 shown. The computer device includes a processor, a memory, a network interface, and a database connected through a system bus. Among them, the processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program, and a database. The internal memory provides an environment for the operation of the operating system and the computer program in the non-volatile storage medium. When the computer program is executed by the processor, it realizes the grounding wire discovery method based on the real-time state topological relationship of the grounding wire.

[0105] Those skilled in the art can understand,Figure 3 The structure shown is only a block diagram of some structures related to the solution of this application, and does not constitute a limitation on the computer device to which the solution of this application is applied. The specific computer device may include more or fewer components than those shown in the figure, or combine some components, or have different component arrangements.

[0106] In one embodiment, a computer device is provided, including a memory and a processor. A computer program is stored in the memory. When the processor executes the computer program, the following steps are implemented: obtaining characteristic information of each grounding wire; generating a plurality of characteristic points according to each piece of the characteristic information and constructing a first undirected graph; using a topology algorithm to match a preset anti-error rule through the first undirected graph to judge the accuracy of the grounding state of each characteristic point; if the grounding state of the characteristic point is judged to be correct, retaining the characteristic point; if the grounding state of the characteristic point is judged to be incorrect, removing the characteristic point; constructing and displaying a second undirected graph according to all the remaining characteristic points.

[0107] In one embodiment, the obtaining of the characteristic information of each grounding wire includes: obtaining basic information of the grounding device; collecting grounding wire state information through the grounding device; collecting positioning information of the grounding device; and obtaining position information at the time of generating a grounding behavior according to the grounding wire state information and the positioning information of the grounding device.

[0108] In one embodiment, the collecting of the grounding wire state information through the grounding device includes: generating single-sex charges through the grounding device; grounding the grounding device; measuring the grounding current and potential difference generated during the movement of the single-sex charges; obtaining a grounding resistance according to the grounding current and a preset potential difference; and making a judgment according to the grounding resistance to obtain the grounding wire state information.

[0109] In one embodiment, the making of a judgment according to the grounding resistance includes: comparing the grounding resistance with a preset resistance threshold range; if the grounding resistance is within the preset threshold range, sending out grounding wire state information indicating that the grounding wire is reliable; if the grounding resistance is outside the preset threshold range, sending out grounding wire state information indicating that the grounding wire is unreliable.

[0110] In one embodiment, the generating of a plurality of characteristic points according to each piece of the characteristic information and constructing a first undirected graph includes: obtaining detection points of each grounding wire according to the positioning information of the grounding device; obtaining grounding points of each grounding wire according to the grounding resistance of each grounding wire; and drawing a first undirected graph according to each of the grounding points and each of the detection points.

[0111] In one embodiment, the method of using a topological algorithm to match a preset anti-error rule through the first undirected graph to determine the accuracy of the grounding status of each feature point includes: matching each feature point in the first undirected graph with the topological algorithm according to the power grid operation mode and the real-time grounding status; if they match, it is determined to be error-free; if they do not match, it is determined to be in error.

[0112] Those of ordinary skill in the art can understand that all or part of the processes of implementing the methods in the above embodiments can be completed by instructing relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above methods. Among them, any reference to a memory, storage, database, or other medium used in the various embodiments provided in the present application can include non-volatile and / or volatile memories. Non-volatile memories can include read-only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memories can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in various forms, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous link DRAM (SLDRAM), Rambus direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and Rambus dynamic RAM (RDRAM), etc.

[0113] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0114] The above is only the preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A method for discovering grounding wires based on the real-time state topological relationship of grounding wires, characterized in that Including: Obtaining the characteristic information of each grounding wire; The obtaining of the characteristic information of each grounding wire includes: obtaining the basic information of the grounding device; collecting the grounding wire state information through the grounding device; collecting the positioning information of the grounding device; obtaining the position information at the time of grounding behavior according to the grounding wire state information and the positioning information of the grounding device; the collecting of the grounding wire state information through the grounding device includes: generating single-sex charges through the grounding device; grounding the grounding device; measuring the grounding current and potential difference generated during the movement of the single-sex charges; obtaining the grounding resistance according to the grounding current and potential difference; making a judgment according to the grounding resistance to obtain the grounding wire state information; Generating a plurality of characteristic points according to each of the characteristic information and constructing a first undirected graph; the generating of a plurality of characteristic points according to each of the characteristic information and constructing a first undirected graph includes: obtaining the detection points of each grounding wire according to the positioning information of the grounding device; obtaining the grounding points of each grounding wire according to the grounding resistance of each grounding wire; drawing a first undirected graph according to each of the grounding points and each detection point; the making of a judgment according to the grounding resistance includes: comparing the grounding resistance with a preset resistance threshold range; if the grounding resistance is within the preset threshold range, sending out the grounding wire state information indicating that the grounding wire is reliable; if the grounding resistance is outside the preset threshold range, sending out the grounding wire state information indicating that the grounding wire is unreliable; Using the first undirected graph to match a preset anti-error rule by means of a topology algorithm to judge the accuracy of the grounding state of each characteristic point; if the grounding state of this characteristic point is judged to be error-free, retaining this characteristic point; if the grounding state of this characteristic point is judged to be incorrect, removing this characteristic point; the using of the first undirected graph to match a preset anti-error rule by means of a topology algorithm to judge the accuracy of the grounding state of each characteristic point includes: matching each characteristic point in the first undirected graph by means of a topology algorithm according to the power grid operation mode and the grounding real-time state; if they match, it is judged to be error-free; if they do not match, it is judged to be incorrect; Constructing and displaying a second undirected graph according to all the remaining characteristic points.

2. The grounding wire discovery system based on the real-time state topological relationship of the grounding wire is characterized in that Including: An information acquisition module for obtaining the characteristic information of each grounding wire; The information acquisition module includes: a basic information acquisition unit for obtaining the basic information of the grounding device; a grounding state acquisition unit for collecting the grounding wire state information through the grounding device; a positioning acquisition unit for collecting the positioning information of the grounding device; a grounding position acquisition unit for obtaining the position information at the time of grounding behavior according to the grounding wire state information and the positioning information of the grounding device; the grounding state acquisition unit includes: a charge generation unit for generating single-sex charges through the grounding device; a grounding control unit for grounding the grounding device; a potential measurement unit for measuring the grounding current and potential difference generated during the movement of the single-sex charges; a resistance calculation unit for obtaining the grounding resistance according to the grounding current and potential difference; a grounding judgment unit for making a judgment according to the grounding resistance to obtain the grounding wire state information; A first mapping module is used to generate multiple feature points and construct a first undirected graph according to each of the feature information; the first mapping module includes: a detection point determination unit, used to obtain the detection point of each grounding wire according to the positioning information of the grounding device; a grounding point determination unit, used to obtain the grounding point of each grounding wire according to the grounding resistance of each grounding wire; a first drawing unit, used to draw a first undirected graph according to each of the grounding points and each detection point; the judgment based on the grounding resistance includes: comparing the grounding resistance with a preset resistance threshold range; if the grounding resistance is within the preset threshold range, issuing grounding wire status information that the grounding wire is reliable; if the grounding resistance is outside the preset threshold range, issuing grounding wire status information that the grounding wire is unreliable; A topology judgment module is used to match the preset error prevention rules by using the topology algorithm through the first undirected graph to judge the accuracy of the grounding state of each feature point; if the grounding state of the feature point is judged to be correct, the feature point is retained; if the grounding state of the feature point is judged to be incorrect, the feature point is removed; the method of matching the preset error prevention rules by using the topology algorithm through the first undirected graph to judge the accuracy of the grounding state of each feature point includes: matching the topology algorithm with each feature point in the first undirected graph according to the power grid operation mode and the real-time grounding state; if they match, it is judged to be correct; if they do not match, it is judged to be incorrect; The second graph construction module is used to construct and display a second undirected graph according to all the remaining feature points.

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