Detection method, device and electronic equipment of distribution network isolation equipment

Abstract

The present invention discloses a detection method, device and electronic equipment for distribution network isolation equipment, and relates to the field of equipment detection of power systems. The method includes: obtaining the topological relationship of the distribution network and the equipment ledger data of the distribution network, wherein the topological relationship is used to characterize the connection relationship between the power equipment in the distribution network, and the equipment ledger data is used to characterize the equipment information of the power equipment; based on the topological relationship, the cable ledger data of the target cable is determined from the equipment ledger data, wherein the target cable is the cable to be detected in the distribution network, and the cable ledger data is used to characterize the cable information of the target cable; based on the cable ledger data, the target equipment connected at both ends of the target cable is detected to obtain the detection result, wherein the detection result is used to characterize whether the target equipment is an isolation device. The present invention solves the technical problem in the related art that it is difficult to detect the isolation equipment of the cable in the distribution network.

Description

Technical Field

[0001] The present invention relates to the field of equipment detection of power systems, and in particular to a detection method, device and electronic equipment for distribution network isolation equipment. Background Art

[0002] With the development of power systems, cables are the main means of achieving power transmission. In order to enhance power supply reliability, isolation devices are usually installed at both ends of the cable to achieve fault isolation when the cable fails. However, due to historical construction and planning, there are still some cables in the existing distribution network that are not equipped with isolation devices, which will affect the safety of operators and reduce the reliability of power supply in the distribution network.

[0003] In the related technology, the operation and maintenance personnel usually manually comb the distribution network to detect whether isolation devices are installed on both sides of the cables in the distribution network so as to install them in time. However, due to the complex grid structure of the distribution network, the large scale of equipment, and the differences in the level of operation and maintenance personnel, it is difficult to timely detect the cables without isolation devices on both sides through manual inspection by the operation and maintenance personnel.

[0004] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0005] The embodiments of the present invention provide a method, an apparatus and an electronic device for detecting isolation equipment of a distribution network, so as to at least solve the technical problem in the related art that it is difficult to detect isolation equipment of cables in a distribution network.

[0006] According to one aspect of an embodiment of the present invention, a method for detecting isolation equipment in a distribution network is provided, comprising: obtaining a topological relationship of the distribution network and equipment inventory data of the distribution network, wherein the topological relationship is used to characterize the connection relationship between power equipment in the distribution network, and the equipment inventory data is used to characterize equipment information of the power equipment; based on the topological relationship, determining cable inventory data of a target cable from the equipment inventory data, wherein the target cable is a cable to be detected in the distribution network, and the cable inventory data is used to characterize cable information of the target cable; based on the cable inventory data, detecting target equipment connected to both ends of the target cable to obtain a detection result, wherein the detection result is used to characterize whether the target equipment is an isolation device.

[0007] Optionally, based on the topological relationship, the cable inventory data of the target cable is determined from the equipment inventory data, including: based on the equipment inventory data, determining the outgoing line switch in the distribution network, wherein the outgoing line switch is used to characterize the switch device that isolates the target cable from the substation in the distribution network; taking the outgoing line switch as the starting point, based on the topological relationship, determining the head end connector of the target cable; taking the head end connector as the starting point, based on the topological relationship, determining the end connector of the target cable; based on the head end connector, the end connector and the topological relationship, determining the cable inventory data of the target cable from the equipment inventory data.

[0008] Optionally, taking the outlet switch as the starting point and based on the topological relationship, determining the first end connector of the target cable includes: taking the outlet switch as the starting point and based on the topological relationship, determining the first device connected to the outlet switch; determining the intersection type of the first device based on the equipment inventory data; in response to the intersection type of the first device being the same as the first preset intersection type, determining the first device as the first end connector of the target cable.

[0009] Optionally, taking the head end connector as the starting point and based on the topological relationship, determining the end connector of the target cable includes: taking the head end connector as the starting point and based on the topological relationship, determining a second device connected to the head end connector; determining the intersection type of the second device based on the device inventory data; and determining that the second device is the end connector of the target cable in response to the intersection type of the second device being the same as the second preset intersection type.

[0010] Optionally, based on the head end connector, the end connector and the topological relationship, the cable inventory data of the target cable is determined from the equipment inventory data, including: based on the head end connector, the end connector and the topological relationship, determining the target cable equipment, wherein the target cable equipment is used to characterize the power equipment connected between the head end connector and the end connector; determining the inventory data associated with the target cable equipment from the equipment inventory data to obtain the cable inventory data.

[0011] Optionally, based on the cable inventory data, the target devices connected at both ends of the target cable are detected to obtain the detection results, including: determining the inventory data of the target device from the cable inventory data based on the topological relationship; determining the detection results based on the inventory data of the target device.

[0012] Optionally, based on the inventory data of the target device, the detection result is determined, including: based on the inventory data of the target device, determining the target device attributes of the target device; in response to the target device attributes being the same as preset device attributes, determining the detection result is that the target device is an isolated device, wherein the preset device attributes are device attributes of the isolated device; in response to the target device attributes being different from the preset device attributes, determining the detection result is that the target device is not an isolated device.

[0013] Optionally, the above method also includes: based on the detection results, determining a cable list of the target cable, wherein the cable list is used to characterize the cable information of the target cable; based on the detection results, counting the number of preset cables in the distribution network to obtain statistical results, wherein no isolation device is connected at both ends of the preset cable, and the statistical results are used to characterize the proportion of the preset cable in multiple cables in the distribution network; outputting the cable list and the statistical results.

[0014] According to another aspect of an embodiment of the present invention, a detection device for distribution network isolation equipment is also provided, including: an acquisition module, used to acquire the topological relationship of the distribution network, and equipment inventory data of the distribution network, wherein the topological relationship is used to characterize the connection relationship between the power equipment in the distribution network, and the equipment ledger data is used to characterize the equipment information of the power equipment; a determination module, used to determine the cable inventory data of the target cable from the equipment ledger data based on the topological relationship, wherein the target cable is a cable to be detected in the distribution network, and the cable ledger data is used to characterize the cable information of the target cable; a detection module, used to detect the target equipment connected to both ends of the target cable based on the cable ledger data, and obtain a detection result, wherein the detection result is used to characterize whether the target equipment is an isolation device.

[0015] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0016] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0017] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0018] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0019] According to another aspect of the embodiments of the present invention, a computer program is further provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0020] In an embodiment of the present application, a detection method for distribution network isolation equipment is provided, including: obtaining the topological relationship of the distribution network and the equipment inventory data of the distribution network; based on the topological relationship, determining the cable inventory data of the target cable from the equipment inventory data; based on the cable inventory data, detecting the target equipment connected at both ends of the target cable to obtain the detection result. It is easy to notice that the present application sorts out the cable information in the distribution network through the easily obtainable topological relationship and equipment inventory data of the distribution network, and automatically analyzes the cables in the distribution network that are not equipped with isolation equipment at both ends through the cable information, thereby achieving the purpose of automatically detecting cables in the distribution network that are not equipped with isolation equipment at both ends, and also providing data support for the transformation of distribution network equipment, thereby achieving the technical effect of timely and accurate detection of cable isolation equipment, and then solving the technical problem of the difficulty in detecting isolation equipment of cables in the distribution network in the related technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0022] Figure 1 is a flow chart of a method for detecting a distribution network isolation device according to an embodiment of the present invention;

[0023] Figure 2 is a schematic diagram of a detection method for a distribution network isolation device according to an embodiment of the present application;

[0024] Figure 3 It is a structural schematic diagram of a detection device for distribution network isolation equipment according to an embodiment of the present invention. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0027] According to an embodiment of the present invention, an embodiment of a detection method for distribution network isolation equipment is provided. It should be noted that the steps shown in the flowchart of the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although a logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0028] Figure 1 A detection method for a distribution network isolation device according to an embodiment of the present invention is as follows. Figure 1 As shown, the method comprises the following steps:

[0029] Step S102, obtaining the topological relationship of the distribution network and the equipment inventory data of the distribution network.

[0030] Among them, the topological relationship is used to characterize the connection relationship between power equipment in the distribution network, and the equipment ledger data is used to characterize the equipment information of the power equipment;

[0031] The above-mentioned distribution network can be an electricity distribution network in the process of transmitting electricity from the transmission network to the user. The above-mentioned distribution network can be a low-voltage distribution network, a medium-voltage distribution network or a high-voltage distribution network; the distribution network can also be a national grid or a microgrid. The type of distribution network is not limited here and can be determined according to actual needs. The distribution network can include but is not limited to substations, distribution cables, distribution equipment and distribution transformers, etc., which are only examples here and can be determined according to actual needs.

[0032] The above-mentioned topological relationship can be used to characterize the connection relationship between power equipment in the distribution network. The above-mentioned topological relationship can be a star topology, a ring topology or a hybrid topology. The type of topological relationship is not limited here and can be determined according to actual needs. In the star topology, each distribution node is directly connected to a central node. The central node can be, for example, a substation, and the central node is responsible for distributing electricity. In the ring topology, each distribution node is connected through a ring line to form a closed loop, and electricity flows along the loop. Different topological relationships will affect the stability, reliability and troubleshooting capabilities of the power grid. Through the topological relationship of the distribution network, the equipment that has a connection relationship with the target power equipment can be recursively analyzed to facilitate the subsequent determination of cables and their equipment in the distribution network.

[0033] The above-mentioned equipment ledger data can be used to characterize the equipment information of the power equipment. The above-mentioned equipment ledger data may include but is not limited to basic equipment information, equipment maintenance information, equipment failure information, etc., which are only examples here and can be determined according to actual needs. The above-mentioned equipment information may include but is not limited to equipment identification, equipment attributes, equipment name, etc., which are only examples here and can be determined according to actual needs. The equipment ledger data can be used to obtain detailed equipment information of the power equipment in the distribution network so as to subsequently identify the cable, that is, to determine the equipment type at both ends of the cable.

[0034] The above-mentioned power equipment may include but is not limited to switches, distribution transformers, knife switches, cable joints, overhead line segments, cable segments, fault indicators, voltage transformers, lightning arresters, busbars, compensators, high-voltage motors, cable terminals, station buildings and other equipment. These are only examples and can be determined according to actual needs.

[0035] In an optional embodiment, the topological relationship and equipment ledger data of the distribution network can be obtained through the Common Information Model (CIM model). The Common Information Model defines the power object model and its relationship, and gives the definition and domain description of the power equipment. The CIM model can be parsed using a parser to read the file content and obtain the equipment information and the connection relationship between the equipment.

[0036] In another optional embodiment, the topological relationship and equipment inventory data of the distribution network can also be obtained from the power system cloud storage platform. The topological relationship and equipment inventory data of the distribution network can also be drawn by manual on-site survey and analysis.

[0037] Step S104, based on the topological relationship, determine the cable inventory data of the target cable from the equipment inventory data.

[0038] Among them, the target cable is the cable to be tested in the distribution network, and the cable inventory data is used to characterize the cable information of the target cable.

[0039] The target cable mentioned above can be a cable to be detected in a power distribution network. The target cable can be a cable in a power distribution network that can be used to transmit power. Generally, connectors are installed at both ends of the target cable, and the connectors can be interfaces for connecting the target cable to a device. The connectors can help ensure that the cable connection is stable, and also help to transmit the accuracy of signals and data. Different types of target cables may require different types of connectors to meet different connection requirements.

[0040] The above-mentioned cable to be detected can be one or more sections of cables in the distribution network. In order to ensure the reliability of the distribution network, the cables in the distribution network can be tested to detect whether isolation devices are installed at both ends of the cables. The isolation devices can be used to cut off the connection in time when a power failure occurs, so as to reduce the scope of the failure and ensure the reliability of power supply. By testing the cable to be detected, it can be determined whether there are isolation devices at both ends of the cable to be detected. In response to detecting that there are no isolation devices at both ends of the cable to be detected, the operation and maintenance personnel can be reminded to install them in time to improve the reliability of the distribution network.

[0041] The above-mentioned cable inventory data can be used to characterize the cable information of the target cable. The above-mentioned cable inventory data may include but is not limited to the cable name, cable type, number of cable connectors, etc., which are only used as examples here and can be determined according to actual needs. The cable inventory data can be used to obtain detailed information on the cables in the distribution network in order to accurately identify whether isolation devices are connected to both ends of the cable.

[0042] In an optional embodiment, the distribution network can be analyzed with the outgoing line switch as the starting position, and the starting and ending ends of the cables in the distribution network can be determined based on the connection relationship between the devices; further, according to the topological relationship, a recursive analysis is performed to obtain the intermediate connected cable equipment starting from the starting end of the cable and ending at the ending end; the data related to the cable equipment is determined in the equipment inventory data, and the above-mentioned data related to the cable equipment is the cable inventory data of the cable.

[0043] In another optional embodiment, a cable field related to the target cable in the equipment inventory data can be extracted. Based on the cable field, cable data corresponding to the cable field is extracted from the equipment inventory data. Optionally, a data analysis tool or programming language is used to extract the cable data, and the cable data is the cable inventory data of the target cable.

[0044] Step S106, based on the cable inventory data, the target devices connected to both ends of the target cable are detected to obtain the detection results.

[0045] The detection result is used to indicate whether the target device is an isolated device.

[0046] The above-mentioned target device can be the device connected at both ends of the target cable, that is, the connector device at both ends of the target cable. The connector device may include but is not limited to switches, knife switches, grounding devices, insulators, voltage protection devices, etc., which are only examples here and can be determined according to actual needs. In fault repair, when the middle joint of the cable explodes or the cable body is damaged, and there are no isolation devices such as switches or knife switches at both ends of the cable, the operator needs to work live to untie the middle joint of the cable, which will prolong the operation time and there will be risks of danger to personnel and equipment. The equipment at both ends of the cable is tested. By testing the target equipment, it can be determined whether there are isolation devices at both ends of the cable, so as to facilitate timely installation.

[0047] The above-mentioned isolation equipment can be a device for isolating or cutting off the cable connection. The isolation equipment can be used to isolate or cut off the connection between the cable and the power equipment to ensure the normal operation of the cable line, and also facilitate the inspection and maintenance of the cable. The isolation equipment can include but is not limited to switches, knife switches, terminal boxes, etc., which are only examples here and can be determined according to actual needs. Through the isolation equipment, when a cable fails, the fault isolation effect can be achieved, thereby improving the power supply reliability of the distribution network.

[0048] The above detection results can be used to characterize whether the target device is an isolation device. For example, the detection result can be that the target devices connected at both ends of the target cable are isolation devices, indicating that isolation devices are installed at both ends of the cable segment; the detection result can also be that the target devices connected at both ends of the target cable are not isolation devices, indicating that isolation devices are not installed at both ends of the cable segment. Through the detection results, cables without isolation devices connected at both ends in the distribution network can be accurately detected, so as to count the situations where isolation devices are not connected at both ends of the cables in the distribution network.

[0049] In an optional embodiment, the target device can be input into a pre-trained first recognition model for recognition to obtain a detection result. The first recognition model can include at least one of the following: logistic regression, decision tree, random forest, support vector machine. The first recognition model is not limited here and can be determined according to actual needs. Alternatively, the operation and maintenance personnel can manually judge the target device to determine the detection result.

[0050] In another optional embodiment, the inventory data of the target cable can be determined from the cable inventory data based on the topological relationship, and the devices connected at both ends of the cable segment can be further determined based on the inventory data of the target cable. By identifying the device type of the device, it is detected whether the devices connected at both ends of the cable segment are isolation devices, thereby determining whether isolation devices are connected at both ends of the cable segment.

[0051] In an embodiment of the present application, a detection method for distribution network isolation equipment is provided, including: obtaining the topological relationship of the distribution network and the equipment inventory data of the distribution network; based on the topological relationship, determining the cable inventory data of the target cable from the equipment inventory data; based on the cable inventory data, detecting the target equipment connected at both ends of the target cable to obtain the detection result. It is easy to notice that the present application sorts out the cable information in the distribution network through the easily obtainable topological relationship and equipment inventory data of the distribution network, and automatically analyzes the cables in the distribution network that are not equipped with isolation equipment at both ends through the cable information, thereby achieving the purpose of automatically detecting cables in the distribution network that are not equipped with isolation equipment at both ends, and also providing data support for the transformation of distribution network equipment, thereby achieving the technical effect of timely and accurate detection of cable isolation equipment, and then solving the technical problem of the difficulty in detecting isolation equipment of cables in the distribution network in the related technology.

[0052] Optionally, based on the topological relationship, the cable inventory data of the target cable is determined from the equipment inventory data, including: based on the equipment inventory data, determining the outgoing line switch in the distribution network, wherein the outgoing line switch is used to characterize the switch device that isolates the target cable from the substation in the distribution network; taking the outgoing line switch as the starting point, based on the topological relationship, determining the head end connector of the target cable; taking the head end connector as the starting point, based on the topological relationship, determining the end connector of the target cable; based on the head end connector, the end connector and the topological relationship, determining the cable inventory data of the target cable from the equipment inventory data.

[0053] The above-mentioned outgoing line switch can be an electric device that connects the substation and the cable in the distribution network. The outgoing line switch can be used to control the on and off of the distribution network line, protect the line safety and perform fault isolation. The outgoing line switch is the last level of protection for the substation and the first level of protection for the distribution line. The outgoing line switch can be used as the starting point, and according to the topological relationship of the outgoing line switch, the cable connected to the outgoing line switch can be recursively analyzed to sort out the cables in the distribution network.

[0054] The above-mentioned substation can be an electric power equipment that converts high voltage power into low voltage power in the distribution network. The substation can include but is not limited to transformers, protection equipment and control equipment, etc., which are only examples here and can be determined according to actual needs.

[0055] The head end connector of the above-mentioned target cable can be a connector that connects cables to cables or cables to power equipment. The head end connector of the target cable can be one of the following: a terminal block, a connector, etc., which is not limited here and can be determined according to actual needs. In the topological relationship of the distribution network, the head end connector is analyzed and determined with the outgoing line switch as the starting point. Optionally, with the outgoing line switch as the starting point, a recursive analysis is performed to obtain the next level device connected to the outgoing line switch, and the intersection type in the device field is screened out as a connector type, which is regarded as the head end connector of the target cable.

[0056] The end connector of the target cable mentioned above can be a connector that connects cables to cables or cables to power equipment. The end connector of the target cable can be one of the following: a terminal block, a connector, etc., which is not limited here and can be determined according to actual needs. In the topological relationship of the distribution network, the end connector is analyzed and determined with the head end connector as the starting point. Optionally, with the head end connector as the starting point, a recursive analysis is performed to obtain the device connected to the head end connector, and the intersection type in the device field is screened out as a connector type, which is regarded as the end connector of the target cable.

[0057] In an optional embodiment, the equipment ledger data can be input into a pre-trained second recognition model for recognition, and the recognition result is the outgoing line switch. The second recognition model can include at least one of the following: logistic regression, decision tree, random forest, support vector machine. The second recognition model is not limited here and can be determined according to actual needs. Alternatively, the operation and maintenance personnel can manually judge the equipment ledger data to determine the outgoing line switch in the distribution network.

[0058] In an optional embodiment, taking the outgoing line switch as the starting point, based on the topological relationship, a depth-first search or breadth-first search algorithm is used to search for the next-level device connected to the outgoing line switch until the intersection type field value of the next-level device is "398" or "399", wherein the intersection type field value "398" is used to characterize the double-ended cable terminal head in the distribution station, and the intersection type field value "399" is used to characterize the double-ended cable terminal head of the distribution station, and the device is determined to be the first end connector of the target cable, and a first end identifier is generated for the device to identify the device as the first end connector of the cable.

[0059] In an optional embodiment, starting from the head end connector, based on the topological relationship, a depth-first search or breadth-first search algorithm is used to search for the device connected to the head end connector of the target cable until the intersection type field value of the next-level device is "398" or "399", wherein the intersection type field value "398" is used to characterize the double-ended cable terminal head in the distribution station, and the intersection type field value "399" is used to characterize the double-ended cable terminal head of the distribution station, and the device is determined to be the end connector of the target cable, and an end identifier is generated for the device to identify the device as the end connector of the cable.

[0060] In an optional embodiment, the target cable segment is determined starting from the head connector and ending with the end connector, and based on the topological relationship, a depth-first search or breadth-first search algorithm is used to search for the power equipment connected in the target cable segment; further, the equipment data of the power equipment is determined from the equipment inventory data, and these equipment data are the cable inventory data of the target cable.

[0061] Optionally, taking the outlet switch as the starting point and based on the topological relationship, determining the first end connector of the target cable includes: taking the outlet switch as the starting point and based on the topological relationship, determining the first device connected to the outlet switch; determining the intersection type of the first device based on the equipment inventory data; in response to the intersection type of the first device being the same as the first preset intersection type, determining the first device as the first end connector of the target cable.

[0062] The first device mentioned above may be an electric device connected to the outlet switch in the distribution network. The first device may include but is not limited to a connector device, a transformer, a circuit breaker, etc., which are only examples and can be determined according to actual needs. The outlet switch may be used as a starting point, and a depth-first search or breadth-first search algorithm may be used to search for the first device connected to the outlet switch.

[0063] The above-mentioned intersection type can be used to characterize the connector type of the equipment. In the power system, different connector types will affect the connection and performance of the power equipment. The connector type can include at least one of the following: cable connector, branch box, grounding box, etc., which is not limited here and can be determined according to actual needs.

[0064] The first preset intersection type can be used to characterize that the connector type of the device is a cable head-end connector. Through the first preset intersection type, it can be determined whether the connector in the cable in the distribution network is a head-end connector.

[0065] In an optional embodiment, starting from the outlet switch, a depth-first search or breadth-first search algorithm can be used to search for the first device connected to the outlet switch. Further, the intersection type of the first device is queried from the device ledger data, and the intersection type of the first device is compared with the first preset intersection type. Optionally, the hash value of the intersection type of the first device can be compared with the hash value of the first preset intersection type. If the hash values ​​are consistent, it means that the first device is the first end connector of the target cable.

[0066] Optionally, taking the head end connector as the starting point and based on the topological relationship, determining the end connector of the target cable includes: taking the head end connector as the starting point and based on the topological relationship, determining a second device connected to the head end connector; determining the intersection type of the second device based on the device inventory data; and determining that the second device is the end connector of the target cable in response to the intersection type of the second device being the same as the second preset intersection type.

[0067] The second device mentioned above may be an electric device connected to the cable head end connector in the distribution network. The second device may include but is not limited to connector equipment, transformers, lightning arresters, etc., which are only examples here and can be determined according to actual needs. The cable head end connector may be used as a starting point, and a depth-first search or breadth-first search algorithm may be used to search for the second device connected to the cable head end connector.

[0068] The second preset intersection type can be used to characterize that the connector type of the device is a cable end connector. Through the second preset intersection type, it can be determined whether the connector in the cable in the distribution network is an end connector.

[0069] In an optional embodiment, the cable head connector can be used as a starting point, and a depth-first search or breadth-first search algorithm can be used to search for the second device connected to the cable head connector. Further, the intersection type of the second device is queried from the device ledger data, and the intersection type of the second device is compared with the second preset intersection type. Optionally, the hash value of the intersection type of the second device can be compared with the hash value of the second preset intersection type. If the hash values ​​are consistent, it means that the second device is the end connector of the target cable.

[0070] Optionally, based on the head end connector, the end connector and the topological relationship, the cable inventory data of the target cable is determined from the equipment inventory data, including: based on the head end connector, the end connector and the topological relationship, determining the target cable equipment, wherein the target cable equipment is used to characterize the power equipment connected between the head end connector and the end connector; determining the inventory data associated with the target cable equipment from the equipment inventory data to obtain the cable inventory data.

[0071] The target cable equipment mentioned above can be used to characterize the power equipment connected between the head end connector and the end connector. The target cable equipment can include but is not limited to capacitors, transformers, lightning arresters, etc., which are only examples here and can be determined according to actual needs.

[0072] In an optional embodiment, the cable segment can be determined based on the head end connector and the end connector corresponding to the head end connector. Furthermore, based on the topological relationship, the equipment of the cable segment is determined, that is, the target cable equipment connected between the head end connector and the end connector is determined. Then, the equipment ledger data related to the target cable equipment is queried from the equipment ledger data to obtain the cable ledger data. In this embodiment, the cable ledger data can be obtained through the topological relationship of the distribution network and the equipment ledger data, thereby sorting out the cable data in the distribution network, so as to detect cables without isolation devices installed at both ends.

[0073] Optionally, based on the cable inventory data, the target devices connected at both ends of the target cable are detected to obtain the detection results, including: determining the inventory data of the target device from the cable inventory data based on the topological relationship; determining the detection results based on the inventory data of the target device.

[0074] The above-mentioned target device ledger data can be used to characterize the device information of the target device. The above-mentioned device information may include but is not limited to device identification, device attributes, device name, etc., which are only examples here and can be determined according to actual needs. The target device ledger data can be obtained from the cable ledger data. The ledger data of the device can be used to determine whether isolation devices are connected to both ends of the cable.

[0075] In an optional embodiment, the target cable to be detected and the device connected to the cable can be determined based on the topological relationship, and then the device information of the device obtained from the cable ledger data is the ledger data of the target cable. The devices connected to both ends of the cable segment are further determined based on the ledger data, and by identifying the device type of the device, it is detected whether the devices connected to both ends of the cable segment are isolation devices, thereby determining whether isolation devices are connected to both ends of the cable segment. Optionally, the device type is identified by a third recognition model, and the identification result obtained is the detection result. The third recognition model may include at least one of the following: logistic regression, decision tree, random forest, support vector machine. The third recognition model is not limited here and can be determined according to actual needs. Alternatively, the operation and maintenance personnel can manually judge the device type and detect whether the target device connected to both ends of the target cable is an isolation device.

[0076] Optionally, based on the inventory data of the target device, the detection result is determined, including: based on the inventory data of the target device, determining the target device attributes of the target device; in response to the target device attributes being the same as preset device attributes, determining the detection result is that the target device is an isolated device, wherein the preset device attributes are device attributes of the isolated device; in response to the target device attributes being different from the preset device attributes, determining the detection result is that the target device is not an isolated device.

[0077] The above-mentioned target device attributes can be used to characterize the type of the target device. The type of the target device may include at least one of the following: a circuit breaker, a load switch, an isolating switch, a grounding device, an insulator, and a voltage protection device, which are not limited here and can be determined according to actual needs. Through the target device attributes, the type of the target device can be accurately determined to determine whether the device connected at both ends of the cable is an isolating device.

[0078] The above-mentioned preset device attribute may be the type of the isolation device. The type of the isolation device may include at least one of the following: a circuit breaker, a load switch, and an isolation switch, which is not limited here and can be determined according to actual needs.

[0079] In an optional embodiment, the target device attribute of the target device can be queried from the ledger data based on the device identification; further, the target device attribute is identified to determine the type of the target device. Optionally, the target device attribute can be compared with the hash value of the preset device attribute. If the hash value is consistent, it means that the target device attribute is the same as the preset device attribute, and the target device is an isolated device. If the hash value is inconsistent, it means that the target device attribute is different from the preset device attribute, and the target device is not an isolated device. Alternatively, the target device attribute and the preset device attribute can also be input into a comparison model, and the output value of the comparison model is the comparison result. The comparison model can be one of the following: support vector machine, random forest, logistic regression, neural network, which is not limited here and can be determined according to actual needs. The comparison result can be one of the following: the target device attribute is the same as the preset device attribute, and the target device attribute is different from the preset device attribute. Then based on the comparison result, the detection result is determined, that is, when the target device attribute is the same as the preset device attribute, the target device is determined to be an isolated device, and when the target device attribute is different from the preset device attribute, the target device is determined not to be an isolated device.

[0080] Optionally, after detecting the target devices connected to both ends of the target cable based on the cable inventory data and obtaining the detection results, the method also includes: determining a cable list of the target cable based on the detection results, wherein the cable list is used to characterize the cable information of the target cable; based on the detection results, counting the number of preset cables in the distribution network to obtain statistical results, wherein no isolation devices are connected to both ends of the preset cables, and the statistical results are used to characterize the proportion of the preset cables in multiple cables in the distribution network; and outputting the cable list and the statistical results.

[0081] The above-mentioned cable list can be used to characterize the cable information of the target cable. The cable information may include but is not limited to the cable name, cable type, cable head end connector name, cable end connector name, and cable equipment, which are not limited here and can be determined according to actual needs. Through this cable list, cables with isolation devices connected at both ends of the cables in the distribution network can be accurately and quickly obtained, and cables without isolation devices connected at both ends of the cables in the distribution network can also be accurately screened out, providing data support for the transformation of distribution network equipment, so that operation and maintenance personnel can install isolation equipment in a timely manner.

[0082] The above-mentioned preset cable can be a cable in the distribution network. The two ends of the preset cable are not connected to isolation equipment, which will reduce the stability of the cable and is not conducive to maintenance by operation and maintenance personnel.

[0083] The above statistical results can be used to characterize the proportion of the preset cables in the multiple cables in the distribution network. Based on the statistical results, the cables without isolation devices installed on both sides of the distribution network can be accurately mined to facilitate the evaluation of the construction of the distribution network.

[0084] In an optional embodiment, the number of target cables in the distribution network can be determined based on the cable inventory data, the number of preset cables in the distribution network can be determined based on the detection results, and the number of preset cables can be divided by the number of target cables to obtain the proportion of preset cables in the multiple cables in the distribution network, that is, to obtain statistical results. Based on the statistical results, the proportion of cables without isolation devices at both ends of the distribution network can be accurately determined. Furthermore, the cable list and statistical results can be pushed to the operating personnel so that the operating personnel can understand the installation status of the isolation devices at both ends of the cables in the distribution network.

[0085] Figure 2 is a schematic diagram of a detection method for a distribution network isolation device according to an embodiment of the present application, such as Figure 2 As shown, the method comprises the following steps:

[0086] Step S202: acquiring the topological relationship of the distribution network based on the public information model.

[0087] Step S204: Based on the public information model, obtain the equipment inventory data of the distribution network.

[0088] Step S206, obtaining the outgoing line switch.

[0089] Step S208, taking the outgoing line switch as the starting point and based on the topological relationship, determine the cable inventory data.

[0090] Step S210, based on the cable inventory data, identify the devices connected to both ends of the target cable and determine the identification result.

[0091] Step S212: Determine a distribution network isolation equipment inspection list based on the identification result.

[0092] Step S214, based on the distribution network isolation equipment detection list, obtain the calculation results and display the calculation results.

[0093] This embodiment obtains the topological relationship and equipment inventory data of the distribution network based on the public information model of the equipment center system. Based on the topological relationship and equipment inventory data of the distribution network, the outgoing switch is obtained. Furthermore, taking the outgoing switch as the starting point, based on the topological relationship, the cables with a connection relationship between the head end connector and the end connector of the cable are analyzed, and then the cable inventory data is determined. Based on the cable inventory data, the devices connected at both ends of the target cable are identified, and the identification results are determined. Based on the identification results, the distribution network isolation equipment detection list is determined. Based on the distribution network isolation equipment detection list, the proportion of cables that are not connected to isolation devices at both ends of the distribution network is calculated among multiple cables, and the calculation results are obtained, and the calculation results are displayed.

[0094] Figure 3 is a schematic diagram of the structure of a detection device for a distribution network isolation device according to an embodiment of the present invention. Figure 3 As shown, the device includes: an acquisition module 32 , a determination module 34 , and a detection module 36 .

[0095] Among them, the acquisition module 32 is used to obtain the topological relationship of the distribution network and the equipment ledger data of the distribution network, wherein the topological relationship is used to characterize the connection relationship between the power equipment in the distribution network, and the equipment ledger data is used to characterize the equipment information of the power equipment.

[0096] Among them, the determination module 34 is used to determine the cable inventory data of the target cable from the equipment inventory data based on the topological relationship, wherein the target cable is a cable to be detected in the distribution network, and the cable inventory data is used to characterize the cable information of the target cable.

[0097] Among them, the detection module 36 is used to detect the target devices connected to both ends of the target cable based on the cable inventory data to obtain the detection result, wherein the detection result is used to characterize whether the target device is an isolation device.

[0098] It should be noted that the acquisition module 32, the determination module 34, and the detection module 36 correspond to steps S102 to S106 in the above embodiment, and the three modules and the corresponding steps implement the same examples and application scenarios, but are not limited to the contents disclosed in the above embodiment. It should be noted that the above modules or units can be hardware components or software components stored in a memory and processed by one or more processors.

[0099] Optionally, the above-mentioned determination module 34 is used to determine the outgoing line switch in the distribution network based on the equipment inventory data, wherein the outgoing line switch is used to characterize the switching device that isolates the target cable from the substation in the distribution network; taking the outgoing line switch as the starting point, based on the topological relationship, determine the first end connector of the target cable; taking the first end connector as the starting point, based on the topological relationship, determine the end connector of the target cable; based on the first end connector, the end connector and the topological relationship, determine the cable inventory data of the target cable from the equipment inventory data.

[0100] Optionally, the above-mentioned determination module 34 is also used to determine the first device connected to the outgoing line switch based on the topological relationship with the outgoing line switch as the starting point; determine the intersection type of the first device based on the equipment inventory data; in response to the intersection type of the first device being the same as the first preset intersection type, determine that the first device is the head end connector of the target cable.

[0101] Optionally, the above-mentioned determination module 34 is also used to determine the second device connected to the head end connector based on the topological relationship with the head end connector as the starting point; determine the intersection type of the second device based on the equipment inventory data; in response to the intersection type of the second device being the same as the second preset intersection type, determine that the second device is the end connector of the target cable.

[0102] Optionally, the above-mentioned determination module 34 is also used to determine the target cable equipment based on the head end connector, the end connector and the topological relationship, wherein the target cable equipment is used to characterize the power equipment connected between the head end connector and the end connector; determine the ledger data associated with the target cable equipment from the equipment ledger data to obtain the cable ledger data.

[0103] Optionally, the detection module 36 is used to determine the inventory data of the target device from the cable inventory data based on the topological relationship; and determine the detection result based on the inventory data of the target device.

[0104] Optionally, the above-mentioned detection module 36 is also used to determine the target device attributes of the target device based on the ledger data of the target device; in response to the target device attributes being the same as the preset device attributes, determine that the detection result is that the target device is an isolated device, wherein the preset device attributes are the device attributes of the isolated device; in response to the target device attributes being different from the preset device attributes, determine that the detection result is that the target device is not an isolated device.

[0105] Optionally, the above device further includes: an analysis module.

[0106] Among them, the analysis module is used to determine the cable list of the target cable based on the detection results, wherein the cable list is used to characterize the cable information of the target cable; based on the detection results, the number of preset cables in the distribution network is counted to obtain statistical results, wherein no isolation device is connected at both ends of the preset cable, and the statistical results are used to characterize the proportion of the preset cable in multiple cables in the distribution network; and the cable list and statistical results are output.

[0107] According to another aspect of an embodiment of the present invention, there is further provided an electronic device, comprising: a memory storing an executable program; and a processor for running the program, wherein the method in each embodiment of the present invention is executed when the program is running.

[0108] According to another aspect of an embodiment of the present invention, a computer-readable storage medium is provided. The computer-readable storage medium includes a stored executable program, wherein when the executable program is running, the device where the computer-readable storage medium is located is controlled to execute the methods in various embodiments of the present invention.

[0109] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a computer program. When the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0110] According to another aspect of an embodiment of the present invention, a computer program product is provided, including a non-volatile computer-readable storage medium, wherein the non-volatile computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method in each embodiment of the present invention is implemented.

[0111] According to another aspect of the embodiments of the present invention, a computer program is further provided. When the computer program is executed by a processor, the methods in the embodiments of the present invention are implemented.

[0112] In the above embodiments of the present invention, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0113] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0114] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed over multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0115] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0116] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server or network device, etc.) to perform all or part of the steps of the methods of each embodiment of the present invention. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk, etc. Various media that can store program codes.

[0117] The above are only preferred embodiments of the present invention. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A method for detecting a distribution network isolation device, characterized in that: include: Acquire the topological relationship of the distribution network and the equipment ledger data of the distribution network, wherein the topological relationship is used to characterize the connection relationship between the power equipment in the distribution network, and the equipment ledger data is used to characterize the equipment information of the power equipment; Based on the topological relationship, determining the cable inventory data of the target cable from the equipment inventory data, wherein the target cable is a cable to be detected in the distribution network, and the cable inventory data is used to characterize the cable information of the target cable; Based on the cable inventory data, the target devices connected to both ends of the target cable are detected to obtain a detection result, wherein the detection result is used to characterize whether the target device is an isolation device.

2. The detection method according to claim 1, characterized in that: The determining, based on the topological relationship, the cable inventory data of the target cable from the device inventory data comprises: Based on the equipment inventory data, determining an outgoing line switch in the distribution network, wherein the outgoing line switch is used to represent a switch device in the distribution network that isolates the target cable from the substation; Taking the outlet switch as a starting point and based on the topological relationship, determining the head end connector of the target cable; Taking the head end connector as a starting point and based on the topological relationship, determining the end connector of the target cable; Based on the head-end connector, the end connector and the topological relationship, the cable inventory data of the target cable is determined from the equipment inventory data.

3. The detection method according to claim 2, characterized in that: The method of determining the first end connector of the target cable based on the topological relationship and taking the outlet switch as the starting point includes: Taking the outgoing line switch as a starting point, and based on the topological relationship, determining a first device connected to the outgoing line switch; Based on the equipment ledger data, determining the intersection type of the first equipment; In response to the cross-point type of the first device being the same as a first preset cross-point type, the first device is determined to be a head-end connector of the target cable.

4. The detection method according to claim 2, characterized in that: The step of determining the end connector of the target cable based on the topological relationship and taking the head end connector as a starting point includes: Taking the head end connector as a starting point, based on the topological relationship, determining a second device connected to the head end connector; Based on the equipment ledger data, determining the intersection type of the second equipment; In response to the cross-point type of the second device being the same as a second preset cross-point type, the second device is determined to be a terminal connector of the target cable.

5. The detection method according to claim 2, characterized in that: The determining the cable inventory data of the target cable from the equipment inventory data based on the head end connector, the terminal connector and the topological relationship includes: Determine a target cable device based on the head-end connector, the end connector and the topological relationship, wherein the target cable device is used to characterize the power device connected between the head-end connector and the end connector; The inventory data associated with the target cable equipment is determined from the equipment inventory data to obtain the cable inventory data.

6. The detection method according to claim 1, characterized in that: The target devices connected to both ends of the target cable are detected based on the cable inventory data to obtain the detection results, including: Based on the topological relationship, determining the ledger data of the target device from the cable ledger data; Based on the ledger data of the target device, the detection result is determined.

7. The detection method according to claim 6, characterized in that: The determining the detection result based on the ledger data of the target device includes: Determining a target device attribute of the target device based on the ledger data of the target device; In response to the target device attribute being the same as a preset device attribute, determining that the detection result is that the target device is the isolated device, wherein the preset device attribute is a device attribute of the isolated device; In response to the target device attribute being different from a preset device attribute, it is determined that the detection result is that the target device is not the isolated device.

8. The detection method according to claim 1, characterized in that: After detecting the target devices connected to both ends of the target cable based on the cable inventory data and obtaining the detection results, the method further includes: Based on the detection result, determining a cable list of the target cable, wherein the cable list is used to characterize the cable information of the target cable; Based on the detection result, the number of preset cables in the distribution network is counted to obtain a statistical result, wherein the isolation device is not connected to both ends of the preset cable, and the statistical result is used to characterize the proportion of the preset cable in the multiple cables in the distribution network; Output the cable list and the statistical results.

9. A detection device for distribution network isolation equipment, characterized in that: include: An acquisition module, used to acquire the topological relationship of the distribution network and the equipment ledger data of the distribution network, wherein the topological relationship is used to characterize the connection relationship between the power equipment in the distribution network, and the equipment ledger data is used to characterize the equipment information of the power equipment; A determination module, configured to determine the cable inventory data of a target cable from the device inventory data based on the topological relationship, wherein the target cable is a cable to be detected in the distribution network, and the cable inventory data is used to characterize the cable information of the target cable; A detection module is used to detect the target devices connected to both ends of the target cable based on the cable inventory data to obtain a detection result, wherein the detection result is used to characterize whether the target device is an isolation device.

10. An electronic device, characterized in that: include: A memory storing an executable program; A processor, configured to run the program, wherein the program executes the method according to any one of claims 1 to 8 when running.

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