CN116154765A - Recognition method, device, computer equipment and storage medium for power topology relationship - Google Patents

Abstract

The application discloses a method, a device, a computer device and a storage medium for identifying a power topological relation, wherein the method comprises the following steps: issuing power utilization characteristic generation commands to each piece of sub-equipment in sequence; collecting real-time electricity utilization characteristic information of each piece of sub-equipment after issuing an electricity utilization characteristic generation command; determining the membership between the target sub-equipment indicated by the power utilization characteristic generation command and the associated equipment according to the real-time power utilization characteristic information of the sub-equipment under the same power utilization characteristic generation command; taking root equipment as a root node, and obtaining paths from the root equipment to each piece of sub equipment through traversal according to membership corresponding to each piece of sub equipment; selecting the longest path from all paths from the root device to the same sub-device as a topology path from the root device to the sub-device; and generating the power topological relation of the target area according to the topological path from the root equipment to each piece of sub equipment. The method and the device can be used for quickly carding the household change relation of the platform area, and are high in efficiency and accuracy.

Description

Recognition method, device, computer equipment and storage medium for power topology relationship

technical field

The present application relates to the technical field of power communication, and in particular to a method, device, computer equipment and storage medium for identifying power topology relationships.

Background technique

In the electric power industry under the current traditional model, the accuracy of the relationship between households and transformers is very important in the operation of business marketing. However, if the user information changes unstable, the meter is replaced due to failure, and the station area is updated and upgraded, etc., the relationship between households and households will often change. When the relationship between households and households changes, problems such as "the line does not match the household" are caused. In addition, there is currently a lack of unified verification methods for the relationship between stations and districts, which makes the data of the relationship between households and households established by the system insufficient. The inaccurate relationship between households and households will cause large data errors in the analysis of station area and phase line loss, which will make the new load arrangement for business expansion unreasonable, affect load balancing and other series of problems, and will also reduce remote cost control. And the success rate of remote recharge. All kinds of problems have directly affected the implementation and expansion of electric power business.

The traditional household change relationship identification method mainly relies on manual line hunting and power outage identification, which often requires experienced technicians to arrive at the scene for line inspection and inspection. This method is time-consuming and laborious, resulting in low execution efficiency and limited scope Restrictions apply only to overhead lines. However, power outage identification needs to cause short-term power outages for users. Although the identification effect is good, it affects the electricity consumption of residential users.

Contents of the invention

The main purpose of this application is to provide a method, device, computer equipment and storage medium for identifying power topology relationships, which can solve the problem of insufficient accuracy, low efficiency, and impact on the normal operation of users in the prior art through manual line hunting and power outage identification. Technical problems with electricity.

In order to achieve the above purpose, the first aspect of the present application provides a method for identifying the power topology relationship, which is applied to the root device under the jurisdiction of the target station area. The method includes:

Sequentially issue power consumption characteristic generation commands to each sub-device;

Collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is issued;

According to the real-time power consumption characteristic information of the sub-device under the same power consumption characteristic generation command, determine the potential affiliation between the target sub-device indicated by the power consumption characteristic generation command and the associated device, where the associated device includes the root device and other sub-devices part of

Take the root device as the root node, and obtain the path from the root device to each sub-device through traversal according to the potential affiliation relationship corresponding to each sub-device;

Select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device;

According to the topological path from the root device to each sub-device, the power topology relationship of the target station area is generated.

In order to achieve the above purpose, the second aspect of the present application provides a device for identifying power topology relationships, the device comprising:

The command sending module is used to send power consumption characteristic generating commands to each sub-equipment in turn;

The information collection module is used to collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is issued;

The affiliation determination module is used to generate real-time power consumption characteristic information of the sub-equipment under the command according to the same power consumption characteristic, and determine the potential affiliation between the target sub-equipment indicated by the power consumption characteristic generation command and the associated equipment, wherein the associated equipment Includes the root device as well as parts from other sub-devices;

The path search module is used to take the root device as the root node, and obtain the path from the root device to each sub-device through traversal according to the potential affiliation relationship corresponding to each sub-device;

A topological path determination module, configured to select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device;

The topology graph building module is used to generate the power topology relationship of the target station area according to the topology path from the root device to each sub-device.

In order to achieve the above object, the third aspect of the present application provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the processor performs the following steps:

Sequentially issue power consumption characteristic generation commands to each sub-device;

Collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is issued;

According to the real-time power consumption characteristic information of the sub-device under the same power consumption characteristic generation command, determine the potential affiliation between the target sub-device indicated by the power consumption characteristic generation command and the associated device, where the associated device includes the root device and other sub-devices part of

Take the root device as the root node, and obtain the path from the root device to each sub-device through traversal according to the potential affiliation relationship corresponding to each sub-device;

Select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device;

According to the topological path from the root device to each sub-device, the power topology relationship of the target station area is generated.

To achieve the above object, the fourth aspect of the present application provides a computer device, including a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the following steps:

Sequentially issue power consumption characteristic generation commands to each sub-device;

Collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is issued;

According to the real-time power consumption characteristic information of the sub-device under the same power consumption characteristic generation command, determine the potential affiliation between the target sub-device indicated by the power consumption characteristic generation command and the associated device, where the associated device includes the root device and other sub-devices part of

Take the root device as the root node, and obtain the path from the root device to each sub-device through traversal according to the potential affiliation relationship corresponding to each sub-device;

Select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device;

According to the topological path from the root device to each sub-device, the power topology relationship of the target station area is generated.

Using the embodiment of the present application has the following beneficial effects:

This application collects real-time power consumption characteristic information and realizes the identification of power topological relationship in the station area based on data analysis technology, that is, realizes the identification of the topological relationship of "substation-line-household" in the station area. There is no need for manual line hunting and power outage identification, which reduces labor costs, saves time and effort, and solves problems such as difficulty in sorting out the relationship between households and substations in the station area, low efficiency, slow update, and unbalanced three-phase loads without affecting the power consumption of users. , Quickly and accurately sort out the household change relationship in the station area, and can detect the change in the household change relationship in the station area in time, update the household change relationship in the station area in time, facilitate the visual inspection of the technical personnel, and reduce the implementation and expansion costs of marketing business. In addition, the accuracy of the power topology relationship of the station area through automatic construction is high, and human error is excluded. The accuracy of the power topology relationship is the accuracy of the household transformer relationship data, which can improve load balancing, ensure accurate analysis of the station area and phase line loss, and enable business The load arrangement at the end is reasonable, which can greatly improve the efficiency of the power system.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only These are some embodiments of the present application. Those skilled in the art can also obtain other drawings based on these drawings without creative work.

in:

Fig. 1 is the application environment figure of the identification method of power topological relationship in the embodiment of the present application;

Fig. 2 is the flow chart of the identification method of power topological relationship in the embodiment of the present application;

FIG. 3 is an effect diagram of the power topology diagram in the embodiment of the present application;

FIG. 4 is a schematic diagram of path search in an embodiment of the present application;

5 is a structural block diagram of an identification device for power topology in an embodiment of the present application;

FIG. 6 is a structural block diagram of a computer device in an embodiment of the present application.

Detailed ways

The following will clearly and completely describe the technical solutions in the embodiments of the application with reference to the drawings in the embodiments of the application. Apparently, the described embodiments are only some of the embodiments of the application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

FIG. 1 is an application environment diagram of a method for identifying power topology relationships in an embodiment. Referring to FIG. 1 , the method for identifying the power topology relationship is applied to the root device 10 of the station area. The platform includes a root device 10 capable of power communication, several sub-device 20 (sub-device 1, sub-device 2 . . . sub-device n), and the root device 10 can communicate with a master station 30 .

In one embodiment, a method for identifying a power topology relationship is provided. As shown in FIG. 2 , this embodiment is described by taking the root device under the jurisdiction of the target zone as an example. The method for identifying the power topology relationship specifically includes the following steps:

S100: Sending power consumption characteristic generation commands to each sub-device in sequence.

Specifically, the target zone includes a root device and multiple sub-devices. A sub-device is a device governed by the root device, and sub-devices also have a hierarchical relationship and a jurisdictional relationship.

According to the device address, the root device can issue power consumption characteristic generation commands to each sub-device in a certain order. How many sub-devices are controlled by the root device, and how many different power consumption characteristics generation commands will be issued.

The root device can be an intelligent terminal in the target station area, and the sub-device can include an intelligent measurement switch and a smart meter in the target station area.

The root device can send a power consumption feature generation command to the smart meter through the meter reading message according to the device address of the smart meter.

In addition, the root device may first send a power consumption characteristic generation command to the smart meter, and then send a power consumption characteristic generation command to the smart measurement switch.

The device address and command content of the target sub-device are carried in the power consumption feature generation command.

Wherein, each sub-device has the functions of receiving commands or data and sending data.

In addition, the commands for generating power consumption characteristics of each sub-equipment are issued at different times.

S200: Collect real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is issued.

Specifically, the target sub-equipment uses the resistance switching device contained in it to generate a power consumption characteristic signal such as a characteristic current signal in the power grid after receiving the power consumption characteristic generation command, and feeds back the characteristic current signal to the power line.

Generally, there is only one power supply in the entire low-voltage station area (that is, the transformer in the low-voltage station area). Therefore, all upper nodes of the node that generates and sends the characteristic current signal can detect the characteristic current signal, while the lower layer nodes of the node and other branch nodes can detect the characteristic current signal. The node cannot detect the characteristic current signal. Based on this principle, the upper-level sub-device of the target sub-device must also monitor the power consumption characteristic signal through the power line. The upper-level sub-device has the function of identifying the characteristic current signal. The upper-level sub-device detects the characteristic current signal, performs corresponding demodulation processing, and finally decodes the characteristic current signal on the power line to obtain data information. The upper-level sub-device can record and store the detected characteristic current signal. The relevant information includes the identification time when the characteristic current signal is detected, and may also include the phase to which the characteristic current signal belongs, the magnitude of the current, and the signal noise, etc., but is not limited thereto.

Based on this principle, after each power consumption characteristic generation command is issued, the target sub-device indicated by it will generate a power consumption characteristic signal, and the associated devices located at the upper level of the target sub-device will detect the power consumption characteristic signal. Thus, both the target sub-device and the associated device will generate their own real-time power consumption characteristic information under the action of the power consumption characteristic generation command.

Since the root device will send a power consumption characteristic generation command to each sub-device, each sub-device will upload the corresponding real-time power consumption characteristic information to the root device, and the number of real-time power consumption characteristic information uploaded by each sub-device is the same as Its position in the whole topology structure (that is, the included upper-level nodes and the number of upper-level nodes) is related. Alternatively, the root device may actively fetch the real-time power consumption characteristic information generated and stored by the sub-device from the sub-device.

S300: According to the real-time power consumption feature information of the sub-device under the same power usage feature generation command, determine the potential affiliation relationship between the target sub-device indicated by the power usage feature generation command and the associated device, wherein the associated device includes the root device and other section in the subdevice.

Specifically, all the devices under the jurisdiction that need to participate in the networking in the station area have the ability to read, detect and generate power consumption characteristics such as characteristic current. The same power consumption characteristic generation command will cause the indicated target sub-device to generate a power consumption characteristic signal, and the associated device associated with the target sub-device will also detect the power consumption characteristic signal generated by the target sub-device. Thus, the same device that uses electrical characteristics to generate a response to a command includes at least one sub-device.

According to the real-time power consumption characteristic information of all sub-devices, it can be determined which sub-devices respond to the command generated by the same power consumption characteristic, and the affiliation relationship between the target sub-devices and associated devices can be determined according to these real-time power consumption characteristic information.

S400: Take the root device as the root node, and obtain a path from the root device to each sub-device through traversal according to potential affiliation relationships corresponding to each sub-device.

Specifically, according to the affiliation relationship, all paths from the root device to any child device may be determined in a traversal manner one by one. According to the affiliation relationship, the path from the root device to any child device includes at least one path. Some of these paths may overlap, the lengths of the paths are not necessarily the same, and the sub-devices contained in the paths are not exactly the same.

S500: Select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device.

Specifically, in reality, there is only one topological path from the root device to the sub-device, and this topological path includes all other sub-devices that must pass through between the root device and the sub-device. the superior equipment. Therefore, by using the longest path principle, the longest path can be determined among all paths from the root device to the same sub-device as the topological path from the root device to the sub-device.

S600: Generate the power topology relationship of the target station area according to the topology path from the root device to each sub-device.

Specifically, some topological paths from the root device to all sub-devices have overlapping parts. Therefore, the shorter topological paths in the overlapping paths can be eliminated by merging, and only the longest topological path in the overlapping paths is kept, and then the root The device acts as the root node, and the power topology relationship of the target station area can be obtained according to all the longest overlapping paths.

In addition, the power topology relationship generated by the root device can be stored in the form of a table, a binary tree, etc., and the master station can actively go to the root device to pull the power topology relationship, or the root device can upload the generated power topology to the master station relation.

After the master station obtains the power topology relationship, it generates the power topology diagram by means of drawing and rendering according to the power topology relationship. The power topology diagram can be displayed and presented, which is convenient for users to view.

Fig. 3 is an effect diagram of the power topology diagram in the embodiment of the present application; referring to Fig. 3, the measurement switch 1 and the measurement switch 2 are directly under the jurisdiction of the terminal; the measurement switch 1 directly governs the measurement switch 3 and the measurement switch 4, Measuring switch 2 governs measuring switch 5; measuring switch 3 governs measuring switch 6 and ammeter 2; measuring switch 4 governs ammeter 3, measuring switch 7 and ammeter 5; measuring switch 5 governs ammeter 6 and measuring switch 8 and the ammeter 9; the measuring switch 6 governs the ammeter 1, the measuring switch 7 governs the ammeter 4, and the measuring switch 8 governs the ammeter 7 and the ammeter 8.

In this embodiment, by collecting real-time power consumption characteristic information and based on data analysis technology, the identification of the power topological relationship of the station area is realized, that is, the identification of the "substation-line-household" topological relationship of the station area is realized. There is no need for manual line hunting and power outage identification, which reduces labor costs, saves time and effort, and solves problems such as difficulty in sorting out the relationship between households and substations in the station area, low efficiency, slow update, and unbalanced three-phase loads without affecting the power consumption of users. , Quickly and accurately sort out the household change relationship in the station area, and can discover the change in the household change relationship in the station area in time, update the household change relationship in the station area in time, facilitate the visual inspection of the technical personnel, and reduce the implementation and expansion costs of marketing business. In addition, the accuracy of the power topology relationship of the station area through automatic construction is high, and human error is excluded. The accuracy of the power topology relationship is the accuracy of the household transformer relationship data, which can improve load balancing, ensure accurate analysis of the station area and phase line loss, and enable business The load arrangement at the end is reasonable, which can greatly improve the efficiency of the power system.

In one embodiment, if it is the target sub-equipment, the real-time power consumption characteristic information includes the switching occurrence time when the characteristic current signal is generated in the power grid by using the local resistance switching device;

If it is a root device or other sub-device, the real-time power consumption characteristic information includes the identification moment when the characteristic current signal on the power line is detected;

After step S100, the method further includes: recording the issuing time of each power consumption characteristic generation command;

S300 specifically includes:

Determine the target sub-equipment and associated equipment that respond to the power consumption characteristic generation command according to the issuing time of the power consumption characteristic generation command, the switching occurrence time of the target sub-equipment, and the identification time of the characteristic current signal. The order of the switching end time and the recognition time of the characteristic current signal by the associated equipment determines the affiliation relationship between the target sub-equipment indicated by the power consumption characteristic generation command and the associated equipment.

Specifically, the power consumption characteristic signal in this embodiment is a characteristic current signal. The root device sends a power usage characteristic generation command to the target sub-device according to the device address of the target sub-device, and at the same time, the root device also records the time when the power usage characteristic generation command is issued.

If the root device is a smart terminal and the target sub-device is a smart meter, the smart terminal sends a power consumption feature generation command to the target smart meter through a meter reading message according to the meter address of the target smart meter.

The target sub-device has the function of receiving and processing commands or instructions, and also has the function of sending data. After receiving the power consumption characteristic generation command, the target sub-equipment uses its own resistance switching device to generate a characteristic current signal in the power grid, and records the switching occurrence time locally. Of course, it can also record the switching end time and the generated characteristic current signal. Information about the current signal. Generate real-time power consumption characteristic information according to the time when switching occurs, and transmit the real-time power consumption characteristic information to the root device.

At the same time, if the target sub-device has an upper-level device, its upper-level device, that is, the associated device, can also detect the characteristic current signal through the power line. After the associated device detects the characteristic current signal, it will record the identification moment when the characteristic current signal is detected, and of course, it can also record the phase identification result of the detected characteristic current signal. Generate real-time power consumption characteristic information according to the identification moment, and transmit it to the root device.

For example, the measurement switch of the meter box where the smart meter is located, the branch switch where the meter box is located, and the smart terminal detect the target characteristic current signal on the power line. If the target characteristic current signal is successfully detected within the set time, the identification time will be saved locally on the device and uploaded to the root device. The root device then sends the transparent transmission to the next smart meter to send the characteristic current.

The root device sends power consumption characteristic generation commands to each sub-device sequentially at different times. Under the same command, the target sub-device responds to the command to generate the characteristic current signal first, and other associated devices detect the characteristic current signal in turn. Therefore, in the presence of delay Under the same command, the switching start time and the identification time of the characteristic current signal are different, but close, and the time difference is within a range. For example, at 12 minutes and 0 seconds, the switching of the target sub-equipment starts, and its associated equipment detects the characteristic current signal at 12 minutes and 5 seconds, 12 minutes and 10 seconds, 12 minutes and 14 seconds, and 12 minutes and 20 seconds. The time difference between these moments is within a preset range, therefore, it is determined that the sub-device corresponding to these moments is an associated device of the target sub-device. The preset range can be set according to the actual application scenario, for example, within 30s, within 1 minute, within 5 minutes, etc. are not limited thereto, and are specifically related to the time interval between two adjacent power consumption characteristic generation commands. Therefore, the target sub-equipment that responds to the same power-consumption characteristic generation command and its What are the associated devices. Then, according to the order in which the associated equipment recognizes the characteristic current signal, the affiliation relationship between the target sub-equipment and the associated equipment that responds to the same power consumption characteristic generation command can be determined. This affiliation is not necessarily an actual affiliation, but only a possible potential affiliation.

In addition, the affiliation relationship referred to in this embodiment is a possible affiliation relationship, and does not represent the real affiliation relationship between devices; the associated device in this embodiment does not directly respond to the power consumption characteristic generation command sent to the target sub-device , but the characteristic current signal generated by the target sub-device is detected by the associated device, making the associated device indirectly become the responding device.

The root device may store potential affiliations as a potential affiliation table. The parent-child relationship between child devices is stored in the potential affiliation table. For example, as shown in Table 1 below:

Table 1

parent member child member terminal Meter 1 Measuring switch 3 Meter 1 terminal Measuring switch 1 Measuring switch 1 Measuring switch 3 Measuring switch 3 Measuring switch 6 terminal Measuring switch 3 terminal Measuring switch 6 Measuring switch 6 Meter 1 Measuring switch 1 Meter 1 Measuring switch 1 Measuring switch 6 … …

Fig. 4 is a schematic diagram of path search in the embodiment of the present application; referring to Fig. 4, according to the potential affiliation relationship between the root device and the sub-device (that is, the parent-child relationship), all paths from the terminal to Table 1 are traversed from the terminal, and 4 paths are obtained , respectively:

Path 1: Terminal - Meter 1

Path 2: terminal-measurement switch 6-electric meter 1

Path 3: terminal-measurement switch 3-measurement switch 6-electric meter 1

Path 4: terminal-measurement switch 1-measurement switch 3-measurement switch 6-electric meter 1

According to the longest path principle, select the longest path 4 from path 1-path 4 as the topological path from the terminal to the meter 1.

In this embodiment, by collecting the issuing time of the power consumption characteristic generation command, the switching end time of the target sub-equipment, the identification time of other sub-equipment to the characteristic current signal and the phase identification result, the response time of the same power consumption characteristic generation command can be determined. The target sub-device and the associated device, and the possible affiliation relationship between the target sub-device and the associated device. It is of great significance to dig out the true affiliation relationship between the root device and the sub-device.

In one embodiment, step S100 specifically includes:

After receiving the device membership list issued by the master station, if the power consumption characteristic generation instruction issued by the master station is received, a command issuance task is generated, and the command issuance task is executed intermittently through task scheduling , so as to issue corresponding power consumption characteristic generation commands to target sub-devices indicated by different power consumption characteristic generation instructions at different times.

Specifically, based on the account set up in the station area, the master station will identify the devices contained in the target station area according to the device address, and these devices include a root device and multiple sub-devices.

The master station will generate a station area device member table according to the identification result of the station area to which the device belongs. The station area device member table records information such as the unique identifier of the target station area to which it belongs, and the device address of each device member.

The master station will send the device membership list of the station to the root device of the target station. After the master station starts the household change relationship identification process, it will transparently transmit the power consumption characteristic generation command to the root device.

The root device starts to initiate networking after receiving the station area device membership list issued by the master station, and after monitoring that all sub-devices have joined the network, it schedules and executes tasks.

After the master station starts the household-change relationship identification process, it will issue a power consumption characteristic generation command to the root device. The root device generates commands according to the power consumption characteristics and the device addresses of each sub-device, and produces command delivery tasks for sending different power consumption characteristics generation commands to different sub-devices. The task of issuing the command is executed intermittently at different times through task scheduling. Each time the task of issuing the command is executed, a power consumption characteristic generation command is issued, so it can ensure that different sub-devices are issued at different times. Electrical signatures generate commands. In addition, the command delivery task needs to be suspended when it is not executed.

After each power consumption feature generation command is issued, the corresponding target sub-device and associated equipment will need a certain response time. In order to avoid time confusion and make it difficult to distinguish the target sub-device and its associated The time interval for issuing commands generated by the electrical feature is to set the time interval for each scheduling of the command issuing task.

In addition, at present, most of the function implementation algorithms are completed in the main station, and cloud computing also has certain shortcomings such as insufficient security protection, network delay and interruption. This application performs edge computing processing and topology recognition through smart terminals, which has obvious advantages in speed. Compared with cloud computing, data processing in different stations is performed in corresponding terminals, which is safe and reliable.

In addition, the master station can first issue the electricity consumption characteristic generation instruction of the power meter, and then issue the electricity consumption characteristic generation instruction of the meter box switches (measurement switches) at all levels after the issuance is completed.

In one embodiment, the command sending task is executed intermittently by means of task scheduling, so as to send corresponding power consumption characteristic generation commands to target sub-devices indicated by different power consumption characteristic generation instructions at different times, including :

Determine whether it is currently in an idle time period;

If it is not currently in the idle time period, then suspend the task of issuing the command, and wait for the arrival of the idle time period;

If it is currently in an idle time period, execute the command issuing task, and issue a power consumption characteristic generation command to the current target sub-equipment indicated by the command issuing task;

If the command sending task is successfully sent to the current corresponding power consumption feature generation command and is still in the idle time period after the interval of the first preset time length, continue to execute the command sending task, and send the command to the The next target sub-device indicated by the task issues a power consumption characteristic generation command;

If within the second preset time length, the command issuing task fails to issue multiple times of the current corresponding power consumption characteristic generation command, then the command issuing task is suspended and waits for the next idle time period. arrival.

Specifically, after the root device schedules and executes tasks, since the root device needs to process heavy and complicated events, for example, there are many events that need to be processed at the time of daily freezing and monthly freezing, so the design of this embodiment Execute the command delivery task at the time. The command sending task is used to send power consumption characteristic generating commands to different target sub-devices.

If the current moment is not in the idle period, the root device will suspend the task of issuing commands and wait for the arrival of the idle time.

If the current moment is in an idle time period, the root device will perform a command sending task to send a corresponding power consumption characteristic generation command to the current target sub-device.

If the command sending task is successfully sent to the current target sub-device to generate a power consumption feature command, and the root device is still idle for the first preset time period, then the root device can continue to execute the command sending task to the next target sub-device The sub-device issues a power consumption characteristic generation command. The first preset duration can be set according to actual conditions, which is not limited in this application. That is, there is an execution cycle in the command sending task, and the command sending task is executed every time an execution cycle passes through. If it is not in the idle state when the execution cycle arrives, the command delivery task is suspended and waits for the idle time to arrive.

For example, in the idle time period, the task of issuing a command is executed every one minute to issue a power consumption characteristic generation command to a target sub-device, and when the next task period (the period of other system tasks) arrives, the execution of the command is suspended. Send tasks and wait for the next idle time period, avoiding the situation where the terminal crashes due to busy tasks.

If the command issuing task is no longer in the idle time period after the command is issued successfully due to the current power consumption characteristics, the command issuing task is suspended and waits for the arrival of the next idle time period.

In addition, if it is currently in an idle state, the command delivery task will be executed, but if multiple attempts to execute the command delivery task fail, the command delivery task will be suspended after the second preset time period for the trial period, and wait for the next Arrival of free time period.

In one embodiment, before step S100, the method further includes: receiving the station equipment member table of the target station sent by the master station;

After S600, the method also includes:

The root device and sub-devices in the power topology relationship are matched and verified according to the device membership table in the station area.

Specifically, the device member table of the station area records the root device and sub-device information contained in the target station area. After the power topology relationship of the target station area is constructed, the power topology relationship in the power topology relationship can be checked according to the device membership table of the station area. Whether it is complete or there are errors such as non-existing device members, when the matching verification fails, an error message can be reported to the master station. The error information includes data such as redundant device member information and/or missing device member information.

In one embodiment, after reporting the error information to the master station, the method further includes:

If the master station reissues the power consumption characteristic generation command, then reissues the corresponding power consumption characteristic generation command to the sub-equipment that has not issued the command;

Collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is reissued;

According to the real-time power consumption characteristic information of the sub-equipment under the same power consumption characteristic generation command, determine the subordinate relationship between the target sub-equipment indicated by the power consumption characteristic generation command and the associated equipment;

Take the root device as the root node, and obtain the path from the root device to each sub-device through traversal according to the affiliation relationship corresponding to each sub-device;

Select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device;

According to the topological path from the root device to each sub-device, the power topology relationship of the target station area is generated.

Specifically, after receiving the error information reported by the root device, the master station analyzes whether it has completed the issuance of the power consumption characteristic generation command for each sub-device, and if not, reissues the corresponding power consumption characteristic generation instruction to the root device instruction.

If the root device receives the power consumption feature generation command reissued by the master station, it will reissue the corresponding power consumption feature generation command to the sub-devices that have not issued the command. And collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is reissued.

The root device needs to re-construct the power topology relationship based on the real-time power consumption characteristic information collected after all power consumption characteristic generation commands are issued. Therefore, the root device needs to perform steps S300-S600 again. In this way, the power topology relationship can be improved and corrected.

In one embodiment, after the matching verification, the method further includes:

If the matching check fails, check whether it has successfully issued the power consumption characteristic generation command to all sub-devices;

If the power consumption characteristic generation command is not successfully issued to all sub-devices, the corresponding power consumption characteristic generation command is reissued to the sub-devices that have not received the power consumption characteristic generation command;

Collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is reissued;

According to the real-time power consumption characteristic information of the sub-equipment under the same power consumption characteristic generation command, determine the subordinate relationship between the target sub-equipment indicated by the power consumption characteristic generation command and the associated equipment;

Take the root device as the root node, and obtain the path from the root device to each sub-device through traversal according to the affiliation relationship corresponding to each sub-device;

Select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device;

According to the topological path from the root device to each sub-device, the power topology relationship of the target station area is generated.

Specifically, if the matching verification fails, the root device will verify whether it has completed sending the power consumption characteristic generation command to all sub-devices, and whether the power consumption characteristic generation command has been issued successfully.

If it is detected that there is an electricity usage characteristic generation command that has not been delivered successfully, then a corresponding power usage characteristic generation command is reissued to the sub-device that has not received the power usage characteristic generation command. And collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is reissued.

The root device needs to re-construct the power topology relationship based on the real-time power consumption characteristic information collected after all power consumption characteristic generation commands are issued. Therefore, the root device needs to perform steps S300-S600 again. In this way, the power topology relationship can be improved and corrected.

In one embodiment, the master station identifies the device members under the jurisdiction of the target station through ledger identification, builds the station device membership table, and sends it to the root device of the target station. The device member table of the station area is the device file of the target station area; among them, the sub-device member table of the station area is used to indicate the corresponding relationship between the target station area and the equipment members under its jurisdiction; the device members can include intelligent terminals, measurement switches and intelligent The electric meter and the like are not limited to this.

In a specific embodiment, the member list of station area equipment is as shown in the following table 2:

Table 2

The station area device member table in Table 1 stores the station area serial number of the target station area, which is the unique identifier, the smart terminal is the table address of the root device, and also stores measurement switches such as measurement switch 1, measurement switch 2 and measurement switch The meter address of switch 3 also stores the meter addresses of smart meters such as smart meter 1 , smart meter 2 , smart meter 3 and smart meter 4 .

Of course, the devices under the jurisdiction of the Taiwan District may not only include smart terminals, measurement switches, and smart meters in actual application scenarios, and this application does not limit this.

In addition, the HPLC technology (high-speed power line communication technology) can be used to realize the power line communication between the root device and the sub-device in this application. HPLC technology is a high-speed power line communication technology. The operating frequency range of broadband high-speed power line communication for power meter reading includes 2.4MHz~5.6MHz, 2MHz~12MHz, 0.7MHz~3MHz, 1.7MHz~3MHz, and has a relatively wide bandwidth. It can provide a data transmission rate of hundreds of kbps to several Mbps, and the noise of the power line in the high frequency band is relatively weak. Compared with the narrowband power line communication, the communication reliability and stability are significantly improved.

This application uses characteristic current signal decoding and HPLC for data transmission and reporting to realize the power topology identification of the station area. The terminal dispatching command scheduling algorithm is adopted to improve the accuracy and efficiency of command dispatching. According to the characteristic information of electricity consumption, the parent-child relationship of equipment is analyzed, and the topology relationship library of equipment is constructed. Generate the longest path algorithm based on the parent-child relationship, confirm each branch of the topology graph and finally generate a complete topology. The topology verification method is used to further confirm the accuracy of the topology identification of the equipment in the station area.

This application can improve the rapidity and accuracy of topology recognition, avoiding the abnormal situation of the terminal performing too many tasks, and adding the longest path algorithm for the topology recognition of the intelligent terminal database, compared with the traditional master station through the characteristic current signal decoding method , which shortens the time for topology identification. The retrieval comparison between the master station and the terminal database also ensures the accuracy of the power topology relationship.

In one embodiment, before step S100, the method also includes:

Broadcast the timing command to each sub-device, so that the root device itself and the sub-device under its jurisdiction can synchronize the clock.

Specifically, the terminal (root device) performs broadcast time calibration operations to identification devices (sub-devices) such as electric meters, circuit breakers, and measurement switches, using the standard DL/T 698.45 protocol and the broadcast time calibration message defined by the DL/T 645 protocol Format.

The communication modules of sub-devices such as energy meters and measuring switches listen to the application layer broadcast timing messages to synchronize their own clocks, so as to realize clock synchronization between the root device and sub-devices.

The synchronous clock can synchronize the time between each sub-device and the root device, which is convenient for accurately judging the potential affiliation relationship between devices.

In addition, the master station, concentrator, energy controller and other terminal equipment can also use the standard DL/T 698.45 protocol for time calibration.

In one embodiment, the present application also provides a power topology identification device, which is applied to the root device under the jurisdiction of the target station area. Referring to FIG. 5, the device includes:

The command sending module 100 is used to send power consumption characteristic generation commands to each sub-equipment in turn;

The information collection module 200 is configured to collect real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is issued;

The affiliation determination module 300 is configured to generate real-time power consumption characteristic information of sub-equipment under the same power consumption characteristic generation command, and determine the affiliation between the target sub-equipment indicated by the power consumption characteristic generation command and the associated equipment, wherein the associated equipment Includes the root device as well as parts from other sub-devices;

The path search module 400 is used to take the root device as the root node, and obtain the path from the root device to each sub-device through traversal according to the affiliation relationship corresponding to each sub-device;

A topological path determination module 500, configured to select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device;

The topology graph construction module 600 is configured to generate the power topology relationship of the target station area according to the topology path from the root device to each sub-device.

Figure 6 shows a diagram of the internal structure of a computer device in one embodiment. Specifically, the computer device may be a terminal or a server. As shown in FIG. 6, the computer device includes a processor, a memory, and a network interface connected through a system bus. Wherein, the memory includes a non-volatile storage medium and an internal memory. The non-volatile storage medium of the computer device stores an operating system, and may also store a computer program. When the computer program is executed by the processor, the processor may implement the steps in the above method embodiments. A computer program may also be stored in the internal memory, and when the computer program is executed by the processor, the processor may execute the steps in the above method embodiments. Those skilled in the art can understand that the structure shown in FIG. 6 is only a block diagram of a part of the structure related to the solution of this application, and does not constitute a limitation on the computer equipment to which the solution of this application is applied. The specific computer equipment can be More or fewer components than shown in the figures may be included, or some components may be combined, or have a different arrangement of components.

In one embodiment, a computer device is proposed, including a memory and a processor, the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the following steps: sending power consumption characteristics to each sub-device in sequence Generate commands;

Collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is issued;

According to the real-time power consumption characteristic information of the sub-device under the same power consumption characteristic generation command, determine the potential affiliation between the target sub-device indicated by the power consumption characteristic generation command and the associated device, where the associated device includes the root device and other sub-devices part of

Take the root device as the root node, and obtain the path from the root device to each sub-device through traversal according to the potential affiliation relationship corresponding to each sub-device;

Select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device;

According to the topological path from the root device to each sub-device, the power topology relationship of the target station area is generated.

In one embodiment, a computer-readable storage medium is provided, which stores a computer program, and when the computer program is executed by a processor, the processor performs the following steps:

Sequentially issue power consumption characteristic generation commands to each sub-device;

Collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is issued;

According to the real-time power consumption characteristic information of the sub-device under the same power consumption characteristic generation command, determine the potential affiliation between the target sub-device indicated by the power consumption characteristic generation command and the associated device, where the associated device includes the root device and other sub-devices part of

Take the root device as the root node, and obtain the path from the root device to each sub-device through traversal according to the potential affiliation relationship corresponding to each sub-device;

Select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device;

According to the topological path from the root device to each sub-device, the power topology relationship of the target station area is generated.

Those of ordinary skill in the art can understand that all or part of the processes in the methods of the above embodiments can be implemented through computer programs to instruct related hardware, and the programs can be stored in a non-volatile computer-readable storage medium. When the program is executed, it may include the procedures of the embodiments of the above-mentioned methods. Wherein, any references to memory, storage, database or other media used in the various embodiments provided in the present application may include non-volatile and/or volatile memory. Nonvolatile memory can include read only memory (ROM), programmable ROM (PROM), electrically programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), or flash memory. Volatile memory can include random access memory (RAM) or external cache memory. By way of illustration and not limitation, RAM is available in many forms such as Static RAM (SRAM), Dynamic RAM (DRAM), Synchronous DRAM (SDRAM), Double Data Rate SDRAM (DDRSDRAM), Enhanced SDRAM (ESDRAM), Synchronous Chain Synchlink DRAM (SLDRAM), memory bus (Rambus) direct RAM (RDRAM), direct memory bus dynamic RAM (DRDRAM), and memory bus dynamic RAM (RDRAM), etc.

The technical features of the above embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the technical features in the above embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, they should be It is considered to be within the range described in this specification.

The above examples only express several implementation modes of the present application, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the scope of protection of the patent application should be based on the appended claims.

Claims (10)

1. A method for identifying a power topology relationship, applied to a root device under the jurisdiction of a target station area, characterized in that the method comprises: Sequentially issue power consumption characteristic generation commands to each sub-device; Collecting the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is issued; According to the real-time power consumption feature information of the sub-device under the same power usage feature generation command, determine the potential affiliation between the target sub-device indicated by the power usage feature generation command and the associated device, wherein the associated device includes a root device and parts of other subdevices; Taking the root device as a root node, and obtaining a path from the root device to each sub-device through traversal according to the potential affiliation relationship corresponding to each sub-device; Selecting the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device; Generate the power topology relationship of the target station area according to the topology path from the root device to each sub-device. 2. The method according to claim 1, wherein, if it is the target sub-equipment, the real-time power consumption characteristic information includes the switching occurrence time when the characteristic current signal is generated in the power grid by using the local resistance switching device; If it is a root device or other sub-device, the real-time power consumption characteristic information includes the identification moment when the characteristic current signal on the power line is detected; After the power usage characteristic generation command is sequentially issued to each sub-device, the method further includes: recording the issuing time of each power usage characteristic generation command; According to the real-time power consumption characteristic information of the sub-equipment under the same power consumption characteristic generation command, determining the potential affiliation relationship between the target sub-equipment indicated by the power consumption characteristic generation command and the associated equipment includes: Determine the target sub-equipment and associated equipment that respond to the power consumption characteristic generation command according to the issuing time of the power consumption characteristic generation command, the switching occurrence time of the target sub-equipment, and the identification time of the characteristic current signal. The sequence of the switching occurrence time of the sub-device and the recognition time of the characteristic current signal by the associated device determines the potential affiliation relationship between the target sub-device indicated by the power consumption characteristic generation command and the associated device. 3. The method according to claim 1, wherein the sequentially issuing power consumption characteristic generation commands to each sub-device comprises: After receiving the device membership list issued by the master station, if the power consumption characteristic generation instruction issued by the master station is received, a command issuance task is generated, and the command issuance task is executed intermittently through task scheduling , so as to issue corresponding power consumption characteristic generation commands to target sub-devices indicated by different power consumption characteristic generation instructions at different times. 4. The method according to claim 3, wherein the task of sending commands is executed intermittently by way of task scheduling, so as to generate instructions to target sub-devices indicated by different power consumption characteristics at different times Issue the corresponding power consumption characteristic generation command, including: Determine whether it is currently in an idle time period; If it is not currently in the idle time period, then suspend the task of issuing the command, and wait for the arrival of the idle time period; If it is currently in an idle time period, execute the command issuing task, and issue a power consumption characteristic generation command to the current target sub-equipment indicated by the command issuing task; If the command sending task is successfully sent to the current corresponding power consumption feature generation command and is still in the idle time period after the interval of the first preset time length, continue to execute the command sending task, and send the command to the The next target sub-device indicated by the task issues a power consumption characteristic generation command; If within the second preset time length, the command issuing task fails to issue multiple times of the current corresponding power consumption characteristic generation command, then the command issuing task is suspended and waits for the next idle time period. arrival. 5. The method according to claim 1, characterized in that, before sending the power consumption characteristic generation command to each sub-equipment in sequence, the method further comprises: receiving the station area of the target station area issued by the master station device membership table; After generating the power topology relationship of the target station area according to the topology path from the root device to each sub-device, the method further includes: Perform matching verification on the root device and sub-devices in the power topology relationship according to the station device membership table. 6. The method according to claim 5, characterized in that, after the matching verification, the method further comprises: If the matching check fails, check whether it has successfully issued the power consumption characteristic generation command to all sub-devices; If the power consumption characteristic generation command is not successfully issued to all sub-devices, the corresponding power consumption characteristic generation command is reissued to the sub-devices that have not received the power consumption characteristic generation command; Collect the real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is reissued; According to the real-time power consumption characteristic information of the sub-equipment under the same power consumption characteristic generation command, determine the potential affiliation relationship between the target sub-equipment indicated by the power utilization characteristic generation command and the associated equipment; Taking the root device as a root node, and obtaining a path from the root device to each sub-device through traversal according to the potential affiliation relationship corresponding to each sub-device; Selecting the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device; Generate the power topology relationship of the target station area according to the topology path from the root device to each sub-device. 7. The method according to claim 1, characterized in that, before the sequentially sending power consumption characteristic generating commands to each sub-device, the method further comprises: Broadcast the time adjustment command to each sub-device, so that the root device and the sub-device under its jurisdiction can synchronize the clock. 8. A device for identifying a power topology relationship, applied to a root device under the jurisdiction of a target station area, characterized in that the device includes: The command sending module is used to send power consumption characteristic generating commands to each sub-equipment in turn; An information collection module, configured to collect real-time power consumption characteristic information of each sub-equipment after the power consumption characteristic generation command is issued; A potential affiliation determination module, configured to generate real-time power consumption characteristic information of sub-equipment under the same power consumption characteristic generation command, and determine the potential affiliation between the target sub-equipment indicated by the power consumption characteristic generation command and the associated device, wherein , the associated device includes the root device and parts in other sub-devices; A path search module, configured to take the root device as a root node, and obtain a path from the root device to each sub-device through traversal according to the potential affiliation relationship corresponding to each sub-device; a topological path determination module, configured to select the longest path from all paths from the root device to the same sub-device as the topological path from the root device to the sub-device; A topology graph building module, configured to generate the power topology relationship of the target station area according to the topology path from the root device to each sub-device. 9. A computer-readable storage medium storing a computer program, characterized in that, when the computer program is executed by a processor, the processor executes the steps of the method according to any one of claims 1 to 7 . 10. A computer device, comprising a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor is executed as claimed in claims 1 to 7. The steps of any one of the methods.

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