Distribution network fault analysis method and device

Abstract

The present application discloses a distribution network fault analysis method and device. The method includes: obtaining the first power-on state of the target device corresponding to each target node in the distribution network topology model, wherein the first power-on state includes: powered, de-powered, and unknown; determining the second power-on state of the upstream device corresponding to the upstream node of the target node according to the first power-on state; and analyzing the distribution network fault according to the comparison result between the first power-on state and the second power-on state. The present application solves the technical problem of the lack of active fault push in the existing distribution network emergency repair command.

Description

Technical Field

[0001] The present application relates to the field of power grid topology state analysis, and more specifically, to a distribution network fault analysis method and device. Background Art

[0002] In the existing technology, the perception of the distribution network operation status is traditionally realized by distribution network automation. Due to the large investment and difficult operation and maintenance, it is difficult to achieve full coverage of distribution network operation. Especially in the relatively backward western region, which is mainly based on overhead grids, the line radius is long, and the interconnection and transfer are difficult; the investment in the power grid is small and there is a lack of automation personnel. Therefore, in most areas, the distribution network is basically in a blind adjustment state, and passively copes with the fault repair mode based on user reports.

[0003] At present, with the development of smart grids, all regions have basically achieved full coverage of power metering systems, and obtained real-time / quasi-real-time data of the end-point operation of the power grid, but a large amount of power metering data cannot directly support the operation and management of the distribution network. Some regions have also carried out support for distribution network operation analysis based on the integration of marketing and distribution, but most of them use passive triggering applications, that is, for users' 95598 repair reports, reverse verification of the fault location and cause of the repair user, and fault location. After receiving the user's fault, some auxiliary analysis is provided, which delays the time of fault discovery and passive processing.

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

[0005] The embodiments of the present application provide a distribution network fault analysis method and device to at least solve the technical problem of lack of active fault push in the existing distribution network emergency repair command.

[0006] According to one aspect of an embodiment of the present application, a distribution network fault analysis method is provided, including: obtaining a first power-on state of a target device corresponding to each target node in a distribution network topology model, wherein the first power-on state includes: power-on, power-off, and unknown; determining a second power-on state of an upstream device corresponding to an upstream node of the target node according to the first power-on state; and performing distribution network fault analysis according to a comparison result between the first power-on state and the second power-on state.

[0007] Optionally, before obtaining the first power-on state of the target device corresponding to each target node in the power distribution network topology model, the method further includes: creating the power distribution network topology model based on the power equipment corresponding to the power distribution system and preset rules.

[0008] Optionally, the preset rules include: the distribution network topology model takes the substation outlet switch as the power supply point, and for the medium voltage distribution network, the distribution transformer is used as the target node; for the low voltage distribution network, the user's electricity meter is used as the target node.

[0009] Optionally, determining the second powered state of the upstream device corresponding to the upstream node of the target node according to the first powered state includes: judging whether the first powered state indicates that the target device is powered, and if so, determining that the second powered state is powered.

[0010] Optionally, distribution network fault analysis based on the comparison result of the first energized state and the second energized state includes: if the comparison result indicates that the first energized state is inconsistent with the second energized state, setting the state of the connecting switch corresponding to the upstream node to a closed state, and re-establishing the distribution network topology model.

[0011] Optionally, the distribution network fault analysis based on the comparison result of the first energized state and the second energized state includes: if the first energized state is consistent with the second energized state, the upstream node is used as the target node, and the first energized state of the target device corresponding to each target node in the distribution network topology model is obtained, until all nodes in the distribution network topology model are traversed to obtain the power failure area information in the distribution system. The consistency of the first energized state and the second energized state may mean that the first energized state and the second energized state do not conflict.

[0012] Optionally, before obtaining the first power-on state of the target device corresponding to each target node in the power distribution network topology model, the method also includes: creating a measurement model corresponding to each power device in the power distribution system, wherein the measurement model includes at least one of the following: the power equipment name, the power equipment model, the power equipment specification, and the power-on state of the power equipment.

[0013] According to one aspect of an embodiment of the present application, a distribution network fault analysis device is provided, including: an acquisition module, used to obtain a first power-on state of a target device corresponding to each target node in a distribution network topology model, wherein the first power-on state includes: power-on, power-off, and unknown; a determination module, used to determine a second power-on state of an upstream device corresponding to an upstream node of the target node according to the first power-on state; and a detection module, used to perform distribution network fault analysis based on a comparison result of the first power-on state and the second power-on state.

[0014] Optionally, the device further includes a first creation module, configured to create the power distribution network topology model based on power equipment corresponding to the power distribution system and preset rules.

[0015] Optionally, the preset rules include: the distribution network topology model takes the substation outlet switch as the power supply point, and for the medium voltage distribution network, the distribution transformer is used as the target node; for the low voltage distribution network, the user's electricity meter is used as the target node.

[0016] Optionally, the determination module includes a determination submodule, configured to determine whether the first powered state indicates that the target device is powered, and if so, determine that the second powered state is powered.

[0017] Optionally, the detection module includes a first detection module, which is used to set the state of the connecting switch corresponding to the upstream node to a closed state and re-establish the distribution network topology model if the comparison result indicates that the first energized state is inconsistent with the second energized state.

[0018] Optionally, the detection module includes a second detection module, which is used to use the upstream node as the target node if the first powered state is consistent with the second powered state, and continue to obtain the first powered state of the target device corresponding to each target node in the distribution network topology model until all nodes in the distribution network topology model are traversed to obtain the power outage area information in the distribution system.

[0019] Optionally, the device also includes a second creation module for creating a measurement model corresponding to each power equipment in the power distribution system, wherein the measurement model includes at least one of the following: power equipment name, power equipment model, power equipment specification, and power status of the power equipment.

[0020] According to one aspect of an embodiment of the present application, a storage medium is provided, wherein the storage medium includes a stored program, wherein when the program is executed, the device where the storage medium is located is controlled to execute the above-mentioned distribution network fault analysis method.

[0021] According to one aspect of an embodiment of the present application, a processor is provided, and the processor is used to run a program, wherein the program executes the above-mentioned distribution network fault analysis method when running.

[0022] In an embodiment of the present application, a method is adopted in which a first energized state of a target device corresponding to each target node in a distribution network topology model is obtained, wherein the first energized state includes: energized, de-energized, and unknown; a second energized state of an upstream device corresponding to an upstream node of the target node is determined according to the first energized state; a distribution network fault is analyzed and judged according to a comparison result between the first energized state and the second energized state, and the energized state of nodes in the distribution system is automatically identified through the distribution network topology model for fault detection, thereby achieving the technical effect of automatically performing fault detection based on the distribution network topology model and improving detection efficiency, thereby solving the technical problem of lack of active fault push in the existing distribution network emergency repair command. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0024] Figure 1 It is a flow chart of an optional distribution network fault analysis method according to an embodiment of the present application;

[0025] Figure 2 is a schematic diagram of an optional power distribution network topology model according to an embodiment of the present application;

[0026] Figure 3 A schematic diagram of establishing and accessing an optional measurement model according to an embodiment of the present application;

[0027] Figure 4 It is a flow chart of an optional distribution network fault analysis method according to an embodiment of the present application;

[0028] Figure 5 It is a structural schematic diagram of an optional distribution network fault analysis device according to an embodiment of the present application. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present application.

[0030] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application 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 interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0031] According to an embodiment of the present application, an embodiment of a distribution network fault analysis method 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.

[0032] Figure 1 is a flow chart of a distribution network fault analysis method according to an embodiment of the present application, such as Figure 1 As shown, the method comprises at least the following steps:

[0033] Step S102, obtaining a first power-on state of a target device corresponding to each target node in the power distribution network topology model, wherein the first power-on state includes: powered, de-powered, and unknown;

[0034] The power distribution network topology model is created based on the power equipment and preset rules in the power distribution system. That is, before obtaining the first power-on state of the target equipment corresponding to each target node in the power distribution network topology model, the method further needs to perform: creating the power distribution network topology model based on the power equipment corresponding to the power distribution system and the preset rules.

[0035] Optionally, the power distribution network topology model may be a topology tree, the target node may be an end node in the topology tree, and the target device may be a device corresponding to the end node.

[0036] Step S104, determining a second powered state of an upstream device corresponding to an upstream node of the target node according to the first powered state;

[0037] Optionally, the terminal node status can be analyzed based on the terminal device's status lifecycle. Specifically, the data status lifecycle can be determined based on the characteristics of the data source. When the lifecycle ends, the status enters an unknown state. For different real-time status sources, the system can set different lifecycles. Since the data sources of the analysis system include various real-time / quasi-real-time data, most devices will not actively send power failure signals. Therefore, the idea of ​​state analysis is the core idea of ​​implementing the analysis algorithm.

[0038] Step S106: Perform distribution network fault analysis based on the comparison result between the first energized state and the second energized state.

[0039] In some optional embodiments of the present application, if the target node is powered on, then the upstream node of the target node must be powered on, and if the target node loses power, then the upstream node of the target node may not necessarily lose power.

[0040] Optionally, distribution network fault analysis based on the comparison result of the first energized state and the second energized state can be achieved in the following way: if the comparison result indicates that the first energized state is inconsistent with the second energized state, the state of the connecting switch corresponding to the upstream node is set to a closed state, and the distribution network topology model is re-established.

[0041] Specifically, when the first energized state is energized, but the second energized state is de-energized, the first energized state is inconsistent with the second energized state, and the state of the contact switch corresponding to the upstream node can be set to a closed state, and the distribution network topology model can be re-established. After determining the state of the terminal device and some intermediate devices in the distribution network topology model, the solution of the present application can continue to perform state judgment on the topological nodes of unknown state based on the topological algorithm of the directed graph. The basic principle is that if the downstream device is energized, the upstream device must be energized. At the same time, the path backtracking in case of state conflict is considered, and finally the energized area and the suspected de-energized area within the topological range are determined, and the de-energized area information can be pushed to the interface. Among them, the path backtracking in case of state conflict means that if the comparison result indicates that the first energized state is inconsistent with the second energized state, the state of the contact switch corresponding to the upstream node is set to a closed state, and the distribution network topology model is re-established.

[0042] Optionally, the preset rule may be: the distribution network topology model takes the transformer outlet switch as the power supply point, and for a medium voltage distribution network, the distribution transformer is taken as the target node; for a low voltage distribution network, the user's electricity meter is taken as the target node.

[0043] Based on the unified data platform, this application combines the characteristics of distribution network operation to realize online analysis of distribution network faults. In the construction of the distribution network topology model: the distribution network topology model is a forest formed by interconnection with feeders as the basic topology tree, with substation outlet switches as power supply points, and distribution transformers as terminal nodes for medium-voltage distribution networks. For low-voltage distribution networks, the user's meter is the terminal node.

[0044] Figure 2 is a schematic diagram of a power distribution network topology model according to an embodiment of the present application, Figure 2 In the network, the substation outgoing line switch is used as the power source point, the medium-voltage topology network of the feeder uses multiple distribution transformers as the end nodes, and the low-voltage area topology uses multiple meters as the end nodes. The distribution transformer can be connected to the low-voltage area topology.

[0045] This application uses the feeder as the basic unit for analysis. First, it is assumed by default that the substation is the power source, and each contact switch is in a separate position. A directed topology tree is constructed and analyzed. The logic that if the child node is powered, the parent node is powered is iteratively analyzed. If the parent node of the outgoing line is in a clear separate state, a conflict occurs. At this time, the state of one of the contact switches is adjusted (it is assumed that there are other lines for power transfer), and the topology tree is reconstructed. Continue to analyze until all nodes are analyzed and no conflicts occur. Finally, the judgment status of each power equipment and the suspected power outage area are output. Among them, attempts can be made according to the possible power transfer methods of the line. When it is considered to be a power transfer, the power point of this topological area has changed, and the analysis topology tree needs to be rebuilt. Among them, each power equipment corresponds to each node.

[0046] Optionally, determining the second powered state of the upstream device corresponding to the upstream node of the target node based on the first powered state can be achieved in the following manner: judging whether the first powered state indicates that the target device is powered, and if so, determining that the second powered state is powered.

[0047] Optionally, distribution network fault analysis based on the comparison result of the first energized state and the second energized state can be achieved in the following way: if the first energized state is consistent with the second energized state, the upstream node is used as the target node, and the first energized state of the target device corresponding to each target node in the distribution network topology model is obtained, until all nodes in the distribution network topology model are traversed to obtain the power outage area information in the distribution system.

[0048] In some optional embodiments of the present application, the first charged state and the second charged state may be consistent in three cases, the first case is that the first charged state is de-energized and the second charged state is energized; the second case is that the first charged state is de-energized and the second charged state is de-energized; the third case is that the first charged state is energized and the second charged state is energized. The first charged state and the second charged state may be inconsistent in that the first charged state is energized and the second charged state is de-energized.

[0049] Optionally, before obtaining the first power-on state of the target device corresponding to each target node in the power distribution network topology model, the method further needs to perform the following steps: create a measurement model corresponding to each power device in the power distribution system, wherein the measurement model includes at least one of the following: power equipment name, power equipment model, power equipment specification, and power-on state of the power equipment.

[0050] There are many types of equipment in the distribution network system, the information sources are discrete and non-standard, and the demand for dynamic expansion or change is frequent. How to achieve standardized management of big data of distribution network applications, support dynamic adaptive expansion, and provide a unified data view for upper-level research and analysis algorithms is the basis for realizing online research and analysis based on distribution network big data.

[0051] This application proposes the concept and implementation mechanism of the measurement model, which is based on the definition of the measurement model based on the device type, that is, the metadata management of the measurement; when the device is instantiated, the measurement object is automatically created and dynamically managed by the real-time database of the supporting platform. The automatic creation and maintenance of relevant measurement data around the device object solves the drawbacks of the traditional monitoring system based on the management of remote signaling and remote measurement discrete measurement points, and also solves the workload of a large amount of manual maintenance.

[0052] In some optional embodiments of the present application, the establishment of the measurement model may include the following steps S302 to S304.

[0053] Step S302, model management stage;

[0054] Distribution network equipment is managed by type. Different types of equipment may have different measurement aspects. Therefore, this application uses the creation of corresponding measurement models based on equipment types. One equipment type can be associated with multiple measurement models. It also represents the management of the distribution network equipment measurement metadata model. Among them, the measurement model may include the name of the power equipment in the distribution system, domain information, etc. The measurement model is associated with the equipment type.

[0055] Step S304, device instance management;

[0056] When a device entity is created, the measurement model instance is automatically created based on the device type and the description of the measurement model, and various configuration management parameters are instantiated. Similarly, when a device instance has been created and a measurement model is added to the measurement model, the measurement model is automatically created for the instantiated device.

[0057] Step S306, real-time operation stage;

[0058] The measurement model is loaded into the real-time database during the operation phase, where the measurement model is converted into the definition of a two-dimensional data table, and the measurement instance is the record in the table. All records are associated with the device. Based on the device object, unified access to the measurement data can be achieved through the standardized class (SQL) language.

[0059] Figure 3 is a schematic diagram of establishing and accessing a measurement model according to an embodiment of the present application, Figure 3In the process, the model management stage may include defining a measurement model based on a resource object type; optionally, after the model management stage, a resource object instance needs to be created based on the resource object type; and the device instance management part may include deriving a measurement instance based on the resource object instance. The resource object type may be the type of power equipment in the power distribution system, and the type of power equipment may include a transformer, a switch, etc.

[0060] Optionally, after the measurement model is established, a two-dimensional data table needs to be created based on the measurement model; after the device instance management part derives the measurement instance based on the resource object instance, the derived measurement instance needs to be synchronously mapped to the data record set in the real-time database management system. In the real-time database management system, the data in the two-dimensional data table can be forwarded to the data record set; the data in the two-dimensional data table can also be processed and stored in the master device dictionary. When accessing the energized state of each power device, the data in the real-time database management system can be accessed through the data access view. Specifically, the master device dictionary can be accessed first, and then the detailed information in the data record set can be obtained according to the master device dictionary. In the real-time database management system, the two-dimensional data table, the master device dictionary, and the data record set are included. In each power device, there are common attributes: such as name, code, type, and voltage level. The master device dictionary extracts these common attributes to form a unified view, which is convenient for fast query and unified management. The data record set is the actual data entry. For example, the measurement model defines "switch operation data". There are 1,000 actual switches, and a record is generated for each switch, with 1,000 records.

[0061] The advantage of this application is that a large amount of discrete and non-directly related information in the distribution network is fitted into the equipment power-on logic, and the status of other unknown devices in the power grid is judged according to the principle of reverse reasoning of the terminal power-on, so as to obtain the operation status of the whole network and the suspected power outage area. On the one hand, it adopts the idea of ​​ubiquitous Internet of Things, makes full use of various information such as power grid monitoring status, communication status, data status, etc., combines professional power grid analysis algorithms, obtains an estimate of the global state of the distribution network, and quickly performs fault warning online to achieve active repair. Compared with the investment in distribution network automation, it has a higher cost-effectiveness, eliminates the cost of on-site equipment installation and operation and maintenance, and at the same time, based on the comprehensive application of information integration of distribution and operation, it generates higher application value. It can realize panoramic monitoring of distribution network operation and active fault prediction, thereby supporting active fault repair and improving the power supply service level. At the same time, the overall operation status of each power equipment can be grasped, and the cause and location of the fault can be accurately located, so as to effectively guide the fault repair work.

[0062] This application first realizes the construction of a unified topological model for the entire network that integrates operation, distribution, and regulation. It integrates the terminal perception data of the smart grid (smart meters, user terminals), some distribution network automation data, secondary equipment, and communication status data, with the concept of ubiquitous Internet of Things, and fits the data with the grid topology nodes. It uses professional grid analysis algorithms, based on incomplete measurement status, real-time / quasi-real-time data, to conduct online analysis of the distribution network operation status, and actively discovers possible suspected fault areas in the current distribution network, thereby realizing active early warning of distribution network faults and active fault repair. At the same time, the system also realizes the status analysis of all distribution network operating equipment, provides panoramic monitoring of distribution network operation, and basically solves the blind regulation dilemma of the distribution network.

[0063] In an embodiment of the present application, a method is adopted in which a first energized state of a target device corresponding to each target node in a distribution network topology model is obtained, wherein the first energized state includes: energized, de-energized, and unknown; a second energized state of an upstream device corresponding to an upstream node of the target node is determined according to the first energized state; a distribution network fault is analyzed and judged according to a comparison result between the first energized state and the second energized state, and the energized state of nodes in the distribution system is automatically identified through the distribution network topology model for fault detection, thereby achieving the technical effect of automatically performing fault detection based on the distribution network topology model and improving detection efficiency, thereby solving the technical problem of lack of active fault push in the existing distribution network emergency repair command.

[0064] Figure 4 is a flow chart of a distribution network fault analysis method according to an embodiment of the present application, such as Figure 4 As shown, the method comprises at least the following steps:

[0065] Step S402, constructing a topology tree according to the outgoing transformer switches;

[0066] Optionally, the topology tree of the distribution network topology model can use the transformer outlet switch as the power supply point, and for the medium voltage distribution network, the distribution transformer as the target node; for the low voltage distribution network, the user meter as the target node.

[0067] Step S404, setting the contact switch state;

[0068] Optionally, the state of each tie switch may be set to be disconnected by default.

[0069] Step S406, detecting whether the target topological node is powered;

[0070] Optionally, the target topology node is Figure 1 The target nodes in the corresponding embodiments are the same, and whether the target topological node is powered is detected. The target topological node can be a child node.

[0071] Step S408, obtaining the parent node status;

[0072] Optionally, the upstream node of the target topological node is the parent node.

[0073] Step S410, checking whether the rules are met;

[0074] Optionally, the rule may be that if the child node is powered, the parent node must be powered. If the rule is met, step S406 is continued to be executed; if the rule is not met, step S412 is executed.

[0075] Step S412, determining whether there is a conflict;

[0076] Optionally, the conflict may be that the child node is powered on and the parent node is powered off. If there is a conflict, step S414 is executed. If there is no conflict, it is determined that the analysis is completed, that is, step S418 is executed.

[0077] Step S414, setting one of the tie switches to closed;

[0078] Step S416, reconstructing the topology tree;

[0079] Step S418, analysis completed;

[0080] Step S420, the device analysis status is determined;

[0081] Step S422: outputting the suspected power outage area.

[0082] This application uses feeders as the basic unit for analysis. First, it assumes by default that the substation is the power source, and each contact switch is in a separate position. A directed topology tree is constructed for analysis. The logic that if the child node is powered, the parent node is powered is iterated. If the parent node of the outgoing line is in a clear separate state, a conflict occurs. At this time, the state of one of the contact switches is adjusted (it is assumed that there are other lines for power transfer), and the topology tree is reconstructed. The analysis continues until no conflict occurs after all node analyses are completed. Finally, the judgment status of each power equipment and the suspected power outage area are output. Among them, attempts can be made according to the possible power transfer methods of the line. When it is considered to be a power transfer, the power point of this topological area has changed, and the analysis topology tree needs to be reconstructed.

[0083] It should be noted that Figure 4 The preferred implementation of the illustrated embodiment can be found in Figure 1 The relevant description of the illustrated embodiment will not be repeated here.

[0084] According to an embodiment of the present application, a distribution network fault analysis device for implementing the above distribution network fault analysis method is also provided. Figure 5 As shown, the device includes: an acquisition module 52, a determination module 54, and a detection module 56; wherein:

[0085] An acquisition module 52 is used to acquire a first power-on state of a target device corresponding to each target node in a power distribution network topology model, wherein the first power-on state includes: powered, de-powered, and unknown;

[0086] A determination module 54, configured to determine a second powered state of an upstream device corresponding to an upstream node of the target node according to the first powered state;

[0087] The detection module 56 is used to analyze and judge the distribution network fault according to the comparison result of the first energized state and the second energized state.

[0088] Optionally, the device further includes a first creation module, configured to create the power distribution network topology model based on power equipment corresponding to the power distribution system and preset rules.

[0089] Optionally, the preset rule may be: the distribution network topology model takes the transformer outlet switch as the power supply point, and for a medium voltage distribution network, the distribution transformer is taken as the target node; for a low voltage distribution network, the user's electricity meter is taken as the target node.

[0090] Optionally, the determination module 54 includes a determination submodule, configured to determine whether the first powered state indicates that the target device is powered, and if so, determine that the second powered state is powered.

[0091] Optionally, the detection module 56 includes a first detection module, which is used to set the state of the connecting switch corresponding to the upstream node to a closed state and re-establish the distribution network topology model if the comparison result indicates that the first energized state is inconsistent with the second energized state.

[0092] Optionally, the detection module 56 includes a second detection module, which is used to take the upstream node as the target node if the first energized state is consistent with the second energized state, and continue to obtain the first energized state of the target device corresponding to each target node in the distribution network topology model until all nodes in the distribution network topology model are traversed to obtain the power outage area information in the distribution system.

[0093] Optionally, the device also includes a second creation module for creating a measurement model corresponding to each power equipment in the power distribution system, wherein the measurement model includes at least one of the following: power equipment name, power equipment model, power equipment specification, and power status of the power equipment.

[0094] It should be noted that Figure 5 The preferred implementation of the illustrated embodiment can be found in Figure 1 The relevant description of the illustrated embodiment will not be repeated here.

[0095] According to another aspect of an embodiment of the present application, a storage medium is further provided, the storage medium including a stored program. Optionally, in this embodiment, the storage medium is configured to store program codes for executing the following steps:

[0096] Obtain the first power-on state of the target device corresponding to each target node in the power distribution network topology model, wherein the first power-on state includes: power-on, power-off, and unknown; determine the second power-on state of the upstream device corresponding to the upstream node of the target node according to the first power-on state; and perform distribution network fault analysis based on the comparison result of the first power-on state and the second power-on state.

[0097] According to another aspect of the embodiment of the present application, a processor is further provided, and the processor is used to run a program, wherein when the program is running, the program code of the following steps in the distribution network fault analysis method of the application program can be executed:

[0098] Obtain the first power-on state of the target device corresponding to each target node in the power distribution network topology model, wherein the first power-on state includes: power-on, power-off, and unknown; determine the second power-on state of the upstream device corresponding to the upstream node of the target node according to the first power-on state; and perform distribution network fault analysis based on the comparison result of the first power-on state and the second power-on state.

[0099] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0100] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0101] 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.

[0102] 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.

[0103] In addition, each functional unit in each embodiment of the present application 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.

[0104] 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 application, 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, which is stored in a storage medium and includes 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 each embodiment method of the present application. 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.

[0105] The above are only preferred implementations of the present application. 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 application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A distribution network fault analysis method, characterized in that: include: Acquire a first power-on state of a target device corresponding to each target node in a power distribution network topology model, wherein the first power-on state includes: powered, de-powered, and unknown; Determine a second powered state of an upstream device corresponding to an upstream node of the target node according to the first powered state; The distribution network fault is analyzed and judged according to the comparison result of the first energized state and the second energized state, including: if the comparison result indicates that the first energized state is inconsistent with the second energized state, the state of the tie switch corresponding to the upstream node is set to a closed state, and the distribution network topology model is re-established; if the first energized state is consistent with the second energized state, the upstream node is used as the target node, and the first energized state of the target device corresponding to each target node in the distribution network topology model is continuously obtained until all nodes in the distribution network topology model are traversed to obtain the power failure area information in the distribution system; Among them, the consistency between the first charged state and the second charged state includes the following situations: the first situation is that the first charged state is de-powered, and the second charged state is energized; the second situation is that the first charged state is de-powered, and the second charged state is de-powered; the third situation is that the first charged state is energized, and the second charged state is energized; the inconsistency between the first charged state and the second charged state includes the following situations: the first charged state is energized, and the second charged state is de-powered.

2. The method according to claim 1, characterized in that Before obtaining the first powered state of the target device corresponding to each target node in the power distribution network topology model, the method further includes: creating the power distribution network topology model based on the power equipment corresponding to the power distribution system and preset rules.

3. The method according to claim 2, characterized in that The preset rules include: the distribution network topology model uses the transformer outlet switch as the power supply point, and for the medium voltage distribution network, the distribution transformer is used as the target node; for the low voltage distribution network, the user's meter is used as the target node.

4. The method according to claim 3, characterized in that Determining the second powered state of an upstream device corresponding to an upstream node of the target node according to the first powered state includes: judging whether the first powered state indicates that the target device is powered, and if so, determining that the second powered state is powered.

5. The method according to claim 1, characterized in that Before obtaining the first power-on state of the target device corresponding to each target node in the power distribution network topology model, the method also includes: creating a measurement model corresponding to each power device in the power distribution system, wherein the measurement model includes at least one of the following: the name of the power equipment, the model of the power equipment, the specification of the power equipment, and the power-on state of the power equipment.

6. A distribution network fault analysis device, characterized in that: include: An acquisition module, used to acquire a first power-on state of a target device corresponding to each target node in a power distribution network topology model, wherein the first power-on state includes: powered, de-powered, and unknown; A determination module, configured to determine a second powered state of an upstream device corresponding to an upstream node of the target node according to the first powered state; A detection module, used for analyzing distribution network faults according to the comparison result of the first energized state and the second energized state, wherein the detection module includes a first detection module, which is used to set the state of the connecting switch corresponding to the upstream node to a closed state and re-establish the distribution network topology model if the comparison result indicates that the first energized state is inconsistent with the second energized state; the detection module also includes a second detection module, which is used to take the upstream node as the target node if the first energized state is consistent with the second energized state, and continue to obtain the first energized state of the target device corresponding to each target node in the distribution network topology model until all nodes in the distribution network topology model are traversed to obtain the power outage area information in the distribution system; Among them, the consistency between the first charged state and the second charged state includes the following situations: the first situation is that the first charged state is de-powered, and the second charged state is energized; the second situation is that the first charged state is de-powered, and the second charged state is de-powered; the third situation is that the first charged state is energized, and the second charged state is energized; the inconsistency between the first charged state and the second charged state includes the following situations: the first charged state is energized, and the second charged state is de-powered.

7. The device according to claim 6, characterized in that The device also includes a first creation module, which is used to create the power distribution network topology model based on the power equipment corresponding to the power distribution system and preset rules.

8. The device according to claim 7, characterized in that The preset rules include: the distribution network topology model uses the transformer outlet switch as the power supply point, and for the medium voltage distribution network, the distribution transformer is used as the target node; for the low voltage distribution network, the user's meter is used as the target node.

9. The device according to claim 8, characterized in that The determination module includes a determination submodule, which is used to determine whether the first powered state indicates that the target device is powered, and if so, determine that the second powered state is powered.

10. The device according to claim 6, characterized in that The device also includes a second creation module for creating a measurement model corresponding to each power device in the power distribution system, wherein the measurement model includes at least one of the following: power device name, power device model, power device specification, and power status of the power device.

11. A storage medium, characterized in that: The storage medium includes a stored program, wherein when the program is running, the device where the storage medium is located is controlled to execute the distribution network fault analysis method according to any one of claims 1 to 5.

12. A processor, characterized in that: The processor is used to run a program, wherein the program executes the distribution network fault analysis method described in any one of claims 1 to 5 when running.

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