CN114257271A - Network topology double-verification method and system - Google Patents
Network topology double-verification method and system Download PDFInfo
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Abstract
The invention discloses a double verification method of power network topology, which comprises the following steps: step S10, the master station issues configuration information to each household meter device through the branch gateway according to the preliminarily identified topological structure; step S11, when the preset report time is up, each user meter device reports its own device identification to its corresponding branch gateway; step S12, each branch gateway fuses the waveforms of the characteristic currents reported by the user meter equipment and received by the branch gateway, and compares the waveforms with a pre-stored reference fusion result; reporting the comparison result and the identifier of the branch gateway to the master station; and step S13, the master station analyzes the comparison results sent by all the branch gateways to determine the final network topology. The invention also discloses a corresponding system. By implementing the invention, the accuracy of the verification of the network topology can be improved, the verification time is reduced, and the verification efficiency is improved.
Description
Technical Field
The invention relates to the technical field of topology identification, in particular to a network topology double-verification method and a network topology double-verification system.
Background
In an electrical power system, a transformer area refers to the supply range or area of a (single) transformer. At present, the network topology in the distribution area is mainly identified by sending a device identifier to the branch gateway through the user meter device, and then the branch gateway sends the branch gateway identifier and the received device identifier to the master station, so that the master station can determine the network topology according to the branch gateway identifier and the device identifier.
The user meter device reports the device identification to the branch gateway in the form of characteristic current. Specifically, the user meter device sends the characteristic current to the branch gateway in the form of a power line carrier, and the branch gateway determines the device identifier represented by the characteristic current according to the characteristic information of the characteristic current, so that the device identifier is reported. Specifically, the waveform of the characteristic current may be used as the characteristic information of the characteristic current, and the device identifier represented by the characteristic current may be determined according to the waveform of the characteristic current.
However, in the prior art, when the device identifier is reported to the branch gateway in the form of the characteristic current, the power system is prone to interfere with the characteristic current, so that the device identifier represented by the characteristic current is inaccurate or an identification error occurs.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method and a system for double verification of a network topology, which can improve the accuracy of the verification of the network topology, reduce the verification time, and improve the verification efficiency by using a double verification mechanism.
To solve the above technical problem, an aspect of the present invention provides a double verification method for a power network topology, which is applied to a network system including a master station, branch gateways and user meter devices, wherein the master station is connected to at least two branch gateways, and each branch gateway is connected to at least one user meter device, the method including:
step S10, the master station sends configuration information to each household meter device through the branch gateway according to the preliminarily recognized topological structure, wherein the configuration information comprises the preset reporting time of each household meter device reporting device identification, and the preset reporting time of each household meter device in the same branch gateway is the same;
step S11, each user meter device receives the configuration information forwarded by the branch gateway, and reports the device identification of itself to the corresponding branch gateway in the form of the waveform of the characteristic current when the preset reporting time is reached;
step S12, each branch gateway fuses the waveforms of the characteristic currents reported by the user meter equipment received by the branch gateway to obtain the current fusion result, and compares the current fusion result with the pre-stored reference fusion result; and reporting the comparison result and the identifier of the branch gateway to the master station;
and step S13, the master station analyzes the comparison results sent by all the branch gateways to determine the final network topology.
Preferably, the step S10 further includes:
the master station configures the same predicted reporting time for each user table device in each branch gateway according to the preliminarily identified topological structure; and the corresponding predicted reporting time of different branch gateways is the same.
Preferably, in step S12, the reference fusion result is a fusion result of the characteristic currents of the subscriber list devices under the current branch gateway, which is determined according to the preliminarily identified topology structure;
and when the current fusion result is the same as the pre-stored reference fusion result or the similarity reaches a preset threshold value, judging that the comparison is successful, otherwise, judging that the comparison is unsuccessful.
In the step S12, the step S13 further includes:
if all comparison results are successful, determining the preliminarily identified topological structure as a final network topological structure;
if the branch gateway with the unsuccessful comparison result exists, the master station reconfigures different preset reporting times for the user meter equipment of the branch gateway with the unsuccessful comparison result; and confirming the topology structure of the branch gateway which is unsuccessful in comparison according to the equipment identifier reported again by each user table equipment, thereby determining the final network topology structure.
Correspondingly, as another aspect of the present invention, a dual calibration system for a power network topology is further provided, which includes a master station, at least two branch gateways, and a plurality of user meter devices, where the master station is connected to the at least two branch gateways, and each branch gateway is connected to at least one user meter device; wherein:
each user meter device is used for receiving the configuration information forwarded by the branch gateway and reporting the device identification of the user meter device to the corresponding branch gateway in the form of the waveform of the characteristic current when the preset reporting time is up;
each branch gateway is used for forwarding the configuration information from the master station, fusing the waveforms of the characteristic currents received by the branch gateway and reported by the user meter equipment to obtain a current fusion result, and comparing the current fusion result with a pre-stored reference fusion result; and reporting the comparison result and the identifier of the branch gateway to the master station;
the master station is used for issuing configuration information to each household meter device through the branch gateways according to the preliminarily identified topological structure, receiving comparison results reported by all the branch gateways for analysis, and determining a final network topological structure; the configuration information includes a preset reporting time for reporting the device identifier by each user meter device.
Preferably, the master station further comprises:
the configuration information generation module is used for forming configuration information of each user meter device according to the preliminarily identified topological structure, and the preset reporting time of each user meter device in the same branch gateway is the same so as to be sent to the corresponding user meter device through the branch gateway; reconfiguring different preset reporting times for the user meter equipment of the branch gateway which is unsuccessful;
the receiving module is used for receiving the comparison result of each branch gateway, the branch gateway identification and the equipment identification of the user table equipment, which are reported by each branch gateway;
and the processing module is used for analyzing the comparison results sent by all the branch gateways and determining the final network topology structure by combining the equipment identification reported by the user table equipment.
In step S12, the reference fusion result stored in the branch gateway is a fusion result of the characteristic currents of the user table devices under the current branch gateway determined according to the preliminarily identified topology structure;
in the branch gateway, when the current fusion result is the same as the pre-stored reference fusion result or the similarity reaches a preset threshold, the comparison result is judged to be successful, otherwise, the comparison result is judged to be unsuccessful.
In step S12, the processing module further includes:
the first determining unit is used for determining the preliminarily identified topological structure as a final network topological structure when all comparison results are successful;
a second determining unit, configured to, when a branch gateway with an unsuccessful comparison result exists, control the configuration information generating module to reconfigure different preset reporting times for the subscriber identity module of the branch gateway with the unsuccessful comparison; and confirming the topology structure of the branch gateway which is unsuccessful in comparison according to the device identification reported again by each user table device, thereby determining the final network topology structure.
The embodiment of the invention has the following beneficial effects:
the invention provides a double verification method and a double verification system for network topology, which can improve the accuracy of the identified network topology by further verifying the network topology after the initial network topology is obtained.
In the embodiment of the invention, the master station configures the reporting time of each user table device under the same branch gateway to be the same time, so that the verification time can be shortened; at the side of the branch gateway, fusing the waveforms of the characteristic currents of the equipment identifiers reported by each household meter equipment, comparing the waveforms with a pre-stored reference fusion result, and reporting the comparison result to the master station; if all the comparison results are successful, determining the preliminary network topology as a final network topology structure; if the comparison result is unsuccessful, the master station only needs to check the user list equipment of the branch website with the unsuccessful comparison result again; the invention sets double checking processes, which can improve checking accuracy; meanwhile, after the first verification is successful, a secondary verification processing process is not needed, so that a verification result can be quickly obtained, and the verification time is reduced on the whole.
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In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is within the scope of the present invention for those skilled in the art to obtain other drawings based on the drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of an embodiment of a double checking method for a network topology according to the present invention;
fig. 2 is a schematic structural diagram of an embodiment of a double checking system of a network topology provided in the present invention;
FIG. 3 is a schematic diagram of the master station of FIG. 2;
fig. 4 is a schematic structural diagram of the processing module in fig. 2.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the accompanying drawings.
As shown in fig. 1, a double verification method for a power network topology provided by the present invention is shown, and is applied to a network system including a master station, branch gateways, and user meter devices, where the master station is connected to at least two branch gateways, and each branch gateway is connected to at least one user meter device. In this embodiment, the method includes:
step S10, the master station sends configuration information to each household meter device through the branch gateway according to the preliminarily recognized topological structure, wherein the configuration information comprises the preset reporting time of each household meter device reporting device identification, and the preset reporting time of each household meter device in the same branch gateway is the same;
in a specific example, preferably, the step S10 further includes:
the master station configures the same predicted reporting time for each user table device in each branch gateway according to the preliminarily identified topological structure; it can be understood that, in the embodiment of the present invention, the predicted reporting times corresponding to different branch gateways may be the same or different. In an example, the user meter devices a1, a2, A3 and a4 under the branch gateway a are all configured to report information at the time of T1; the other branch gateway B is provided with two user meter devices B1 and B2 which are configured to report information at the time of T2; branch C has 3 user meter devices C1, C2 and C3 all configured with T3 time report information; preferably, T1, T2 and T3 are the same; in other embodiments, at least two of the T1, T2, and T3 may be different.
Step S11, each user meter device receives the configuration information forwarded by the branch gateway, and reports the device identification of itself to the corresponding branch gateway in the form of the waveform of the characteristic current when the preset reporting time is reached; specifically, the user meter device sends the characteristic current to the branch gateway in the form of a power line carrier, and the waveform of the characteristic current can be used as the characteristic information of the characteristic current, so that the device identifier represented by the characteristic current can be determined according to the waveform of the characteristic current.
Step S12, each branch gateway fuses the received waveforms of the characteristic currents reported by the user meter equipment to obtain the current fusion result, and compares the current fusion result with the pre-stored reference fusion result; and reporting the comparison result and the identifier of the branch gateway to the master station; in a specific example, a reference fusion result is stored in each branch gateway in advance, wherein the reference fusion result is a fusion result of characteristic currents of each user table device under the current branch gateway determined according to a preliminarily identified topological structure;
the step S12 further includes:
and after receiving the characteristic current waveform corresponding to the equipment identifier, each branch gateway performs fusion processing to form a current fusion result, compares the current fusion result with a reference fusion result, and judges that the comparison is successful if the current fusion result is the same as the pre-stored reference fusion result or the similarity reaches a preset threshold value, or else, judges that the comparison is unsuccessful.
And step S13, the master station analyzes the comparison results sent by all the branch gateways to determine the final network topology.
In a specific example, the step S13 further includes:
if all comparison results are successful, determining the preliminarily identified topological structure as a final network topological structure;
if the branch gateway with the unsuccessful comparison result exists, the master station reconfigures different preset reporting times for the user meter equipment of the branch gateway with the unsuccessful comparison result; and confirming the topology structure of the branch gateway which is unsuccessful in comparison according to the equipment identifier reported again by each user table equipment, thereby determining the final network topology structure.
Fig. 2 is a schematic structural diagram illustrating an embodiment of a double checking system for a power network topology according to the present invention. Referring to fig. 3 to 4 together, in the present embodiment, the system includes: the system comprises a main station 1, at least two branch gateways 2 and a plurality of user meter devices 3, wherein the main station 1 is connected with the at least two branch gateways 2, and each branch gateway 2 is connected with at least one user meter device 3; more specifically, the master station 1 and the branch gateway 2 may communicate with each other in an RS485 bus manner, and the communication protocol is DLT 6452007. The master station 1 and the branch gateway 2, and the branch gateway 2 and the user meter device 3 can all adopt broadband power line carrier (HPLC carrier) communication. More specifically, wherein:
each user meter device 3 is configured to receive the configuration information forwarded by the branch gateway 2, and report a device identifier of the user meter device to the corresponding branch gateway 2 in the form of a waveform of a characteristic current when a preset reporting time is reached;
each branch gateway 2 is used for forwarding the configuration information from the master station 1, fusing the received waveforms of the characteristic currents reported by the household meter devices 3 to obtain a current fusion result, and comparing the current fusion result with a pre-stored reference fusion result; and reporting the comparison result and the identifier of the branch gateway to the master station 1;
the master station 1 is used for issuing configuration information to each household meter device 3 through the branch gateways 2 according to the preliminarily identified topological structure, receiving comparison results reported by all the branch gateways 2 for analysis, and determining a final network topological structure; the configuration information includes a preset reporting time for reporting the device identifier by each subscriber meter device 3.
The reference fusion result stored in the branch gateway 2 is the fusion result of the characteristic current of each user table device under the current branch gateway determined according to the preliminarily identified topological structure;
in the branch gateway 2, when the current fusion result is the same as the pre-stored reference fusion result or the similarity reaches a predetermined threshold, the comparison result is determined to be successful, otherwise, the comparison result is determined to be unsuccessful.
As shown in fig. 3, in one example, the primary station 1 further includes:
a configuration information generating module 10, configured to form configuration information of each user meter device according to the preliminarily identified topology structure, where the preset reporting time of each user meter device in the same branch gateway is the same, and the configuration information is sent to the corresponding user meter device through the branch gateway; reconfiguring different preset reporting times for the user meter equipment of the branch gateway which is unsuccessful;
a receiving module 11, configured to receive a comparison result of each branch gateway, a branch gateway identifier, and an equipment identifier of the user meter equipment, where the comparison result is reported by each branch gateway;
the processing module 12 analyzes the comparison results sent by all the branch gateways, and determines the final network topology structure by combining the device identifiers reported by the user table device
As shown in fig. 4, the processing module 12 further includes:
a first determining unit 120, configured to determine the preliminarily identified topology as a final network topology when all comparison results are successful;
a second determining unit 121, configured to, when a branch gateway with an unsuccessful comparison result exists, control the configuration information generating module to reconfigure different preset reporting times for the subscriber identity module of the branch gateway with the unsuccessful comparison; and confirming the topology structure of the branch gateway which is unsuccessful in comparison according to the device identification reported again by each user table device, thereby determining the final network topology structure.
For more details, reference may be made to the foregoing description of fig. 1, which is not repeated herein.
The embodiment of the invention has the following beneficial effects:
the invention provides a double verification method and a double verification system for network topology, which can improve the accuracy of the identified network topology by further verifying the network topology after the initial network topology is obtained.
In the embodiment of the invention, the master station configures the reporting time of each user table device under the same branch gateway to be the same time, so that the verification time can be shortened; at the side of the branch gateway, fusing the waveforms of the characteristic currents of the equipment identifiers reported by each household meter equipment, comparing the waveforms with a pre-stored reference fusion result, and reporting the comparison result to the master station; if all the comparison results are successful, determining the preliminary network topology as a final network topology structure; if the comparison result is unsuccessful, the master station only needs to check the user list equipment of the branch website with the unsuccessful comparison result again; the invention sets double checking processes, which can improve checking accuracy; meanwhile, after the first verification is successful, a secondary verification processing process is not needed, so that a verification result can be quickly obtained, and the verification time is reduced on the whole.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, apparatus, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While the invention has been described in connection with what is presently considered to be the most practical and preferred embodiment, it is to be understood that the invention is not to be limited to the disclosed embodiment, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.
Claims (7)
1. A double verification method of power network topology is applied to a network system comprising a main station, branch gateways and user meter equipment, wherein the main station is connected with at least two branch gateways, and each branch gateway is connected with at least one user meter equipment, and the method is characterized by comprising the following steps:
step S10, the master station sends configuration information to each household meter device through the branch gateway according to the preliminarily recognized topological structure, wherein the configuration information comprises the preset reporting time of each household meter device reporting device identification, and the preset reporting time of each household meter device in the same branch gateway is the same;
step S11, each user meter device receives the configuration information forwarded by the branch gateway, and reports the device identification of itself to the corresponding branch gateway in the form of the waveform of the characteristic current when the preset reporting time is reached;
step S12, each branch gateway fuses the waveforms of the characteristic currents reported by the user meter equipment received by the branch gateway to obtain the current fusion result, and compares the current fusion result with the pre-stored reference fusion result; and reporting the comparison result and the identifier of the branch gateway to the master station;
and step S13, the master station analyzes the comparison results sent by all the branch gateways to determine the final network topology.
2. The method according to claim 1, wherein in step S12, the reference fusion result is a fusion result of the feature currents of the respective subscriber table devices under the current branch gateway determined according to the preliminarily identified topology structure;
and when the current fusion result is the same as the pre-stored reference fusion result or the similarity reaches a preset threshold value, judging that the comparison is successful, otherwise, judging that the comparison is unsuccessful.
3. The method of claim 2, wherein the step S13 further comprises:
if all comparison results are successful, determining the preliminarily identified topological structure as a final network topological structure;
if the branch gateway with the unsuccessful comparison result exists, the master station reconfigures different preset reporting times for the user meter equipment of the branch gateway with the unsuccessful comparison result; and confirming the topology structure of the branch gateway which is unsuccessful in comparison according to the equipment identifier reported again by each user table equipment, thereby determining the final network topology structure.
4. A double-check system of power network topology is characterized by comprising a main station, at least two branch gateways and a plurality of user meter devices, wherein the main station is connected with the at least two branch gateways, and each branch gateway is connected with at least one user meter device; wherein:
each user meter device is used for receiving the configuration information forwarded by the branch gateway and reporting the device identification of the user meter device to the corresponding branch gateway in the form of the waveform of the characteristic current when the preset reporting time is up;
each branch gateway is used for forwarding the configuration information from the master station, fusing the waveforms of the characteristic currents received by the branch gateway and reported by the user meter equipment to obtain a current fusion result, and comparing the current fusion result with a pre-stored reference fusion result; and reporting the comparison result and the identifier of the branch gateway to the master station;
the master station is used for issuing configuration information to each household meter device through the branch gateways according to the preliminarily identified topological structure, receiving comparison results reported by all the branch gateways for analysis, and determining a final network topological structure; the configuration information includes a preset reporting time for reporting the device identifier by each user meter device.
5. The system according to claim 4, wherein the reference fusion result stored in the branch gateway is a fusion result of the characteristic currents of the respective subscriber table devices under the present branch gateway determined according to the preliminarily identified topology structure;
in the branch gateway, when the current fusion result is the same as the pre-stored reference fusion result or the similarity reaches a preset threshold, the comparison result is judged to be successful, otherwise, the comparison result is judged to be unsuccessful.
6. The system of claim 5, wherein the primary station further comprises:
the configuration information generation module is used for forming configuration information of each user meter device according to the preliminarily identified topological structure, and the preset reporting time of each user meter device in the same branch gateway is the same so as to be sent to the corresponding user meter device through the branch gateway; reconfiguring different preset reporting times for the user meter equipment of the branch gateway which is unsuccessful;
the receiving module is used for receiving the comparison result of each branch gateway, the branch gateway identification and the equipment identification of the user table equipment, which are reported by each branch gateway;
and the processing module is used for analyzing the comparison results sent by all the branch gateways and determining the final network topology structure by combining the equipment identification reported by the user table equipment.
7. The system of claim 6, wherein the processing module further comprises:
the first determining unit is used for determining the preliminarily identified topological structure as a final network topological structure when all comparison results are successful;
a second determining unit, configured to, when a branch gateway with an unsuccessful comparison result exists, control the configuration information generating module to reconfigure different preset reporting times for the subscriber identity module of the branch gateway with the unsuccessful comparison; and confirming the topology structure of the branch gateway which is unsuccessful in comparison according to the device identification reported again by each user table device, thereby determining the final network topology structure.
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| CN112491135A (en) * | 2020-10-26 | 2021-03-12 | 国电南瑞南京控制系统有限公司 | Power carrier and information fusion-based method and system for identifying low-voltage topology in power distribution network |
| US20210083944A1 (en) * | 2019-09-16 | 2021-03-18 | Juniper Networks, Inc. | Apparatus, system, and method for topology discovery across geographically redundant gateway devices |
| CN112671584A (en) * | 2020-12-25 | 2021-04-16 | 深圳深宝电器仪表有限公司 | Network topology identification method, device, system and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20210083944A1 (en) * | 2019-09-16 | 2021-03-18 | Juniper Networks, Inc. | Apparatus, system, and method for topology discovery across geographically redundant gateway devices |
| CN112491135A (en) * | 2020-10-26 | 2021-03-12 | 国电南瑞南京控制系统有限公司 | Power carrier and information fusion-based method and system for identifying low-voltage topology in power distribution network |
| CN112671584A (en) * | 2020-12-25 | 2021-04-16 | 深圳深宝电器仪表有限公司 | Network topology identification method, device, system and storage medium |
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