CN111953072B - Low-voltage distribution area topology identification method, device, equipment and storage medium - Google Patents

Low-voltage distribution area topology identification method, device, equipment and storage medium Download PDF

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CN111953072B
CN111953072B CN202010812204.0A CN202010812204A CN111953072B CN 111953072 B CN111953072 B CN 111953072B CN 202010812204 A CN202010812204 A CN 202010812204A CN 111953072 B CN111953072 B CN 111953072B
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identification
signal
topology
identified
terminals
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CN111953072A (en
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陈文�
胡春潮
张延旭
尤毅
张启然
宋旭东
顾博川
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China Southern Power Grid Power Technology Co Ltd
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China Southern Power Grid Power Technology Co Ltd
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
    • H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
    • H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
    • H02J13/00022—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission
    • H02J13/00024—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment using wireless data transmission by means of mobile telephony
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02B90/20—Smart grids as enabling technology in buildings sector
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
    • Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
    • Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
    • Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
    • Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission

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  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Remote Monitoring And Control Of Power-Distribution Networks (AREA)

Abstract

The invention discloses a method, a device, equipment and a storage medium for identifying low-voltage distribution area topology, which comprises the following steps: the method relates to a topology identification end, a plurality of signal forwarding nodes and a plurality of terminals to be identified which are connected in communication, and comprises the following steps: responding to registration requests of a terminal to be identified and a signal forwarding node, and respectively issuing unique identification codes to the terminal to be identified and the signal forwarding node through a topology identification end; broadcasting a topology identification request to a plurality of terminals to be identified through a topology identification terminal; responding to the topology identification request through a plurality of terminals to be identified, and respectively generating initial identification signals according to the unique identification codes of the terminals to be identified; updating the initial identification signal through a plurality of signal forwarding nodes, generating a plurality of target identification signals and sending the target identification signals to a topology identification end; the topology identification end determines the low-voltage distribution area topology structures corresponding to the terminals to be identified respectively according to the target identification signals, so that the topology identification cost is reduced, and the topology identification efficiency and accuracy are improved.

Description

Low-voltage distribution area topology identification method, device, equipment and storage medium
Technical Field
The invention relates to the technical field of topology identification, in particular to a low-voltage distribution area topology identification method, device, equipment and storage medium.
Background
The intelligent power grid aims to connect facilities of various links such as power generation, transmission, distribution, transformation, utilization, storage and the like together by a digital information network system, realize the maximization of resource benefits of a power supply side, a power grid side, a user side and the like through intelligent control, and realize the win-win situation.
Currently, big data, cloud computing, internet of things, mobile internet and artificial intelligence are new connotations for intelligent power grids, and numerous research institutions and numerous power grid companies at home and abroad begin to apply the new technology. For the fault equipment, an advanced data analysis and mining method is required to be utilized, information comprehensive display and linkage are realized based on a geographic map, three core functions of intelligent monitoring, fault research and judgment and command decision are formed, accurate and rapid positioning and root tracing of the fault equipment are realized, and safe and stable operation of a power grid system is ensured.
The existing method for positioning the fault equipment is generally based on a characteristic current method, a branch current analysis method and a characteristic signal method for topology identification, but the characteristic current method has higher cost due to the generation of characteristic current; the branch current analysis method cannot ensure that the branch current and the ammeter current are on the same time section, and the accuracy is low; the characteristic signal method has lower recognition efficiency and higher recognition cost due to the limitation of a communication mode. To sum up, the above-mentioned prior art's identification cost is higher, can't guarantee discernment efficiency and discernment degree of accuracy simultaneously.
Disclosure of Invention
The invention provides a method, a device, equipment and a storage medium for identifying topology of a low-voltage transformer area, and solves the technical problems that the cost of topology identification is high and the identification efficiency and the identification accuracy cannot be ensured simultaneously in the prior art.
The invention provides a low-voltage distribution area topology identification method, which relates to a topology identification end, a plurality of signal forwarding nodes and a plurality of terminals to be identified which are connected in a communication way, and comprises the following steps:
responding to the registration requests of the terminal to be identified and the signal forwarding node, and respectively issuing unique identification codes to the terminal to be identified and the signal forwarding node through a topology identification end;
broadcasting a topology identification request to the plurality of terminals to be identified through the topology identification terminal;
responding to the topology identification request through the plurality of terminals to be identified, respectively generating initial identification signals according to unique identification codes respectively corresponding to the plurality of terminals to be identified, and sending the initial identification signals to the plurality of signal forwarding nodes;
updating the initial identification signal through a plurality of signal forwarding nodes to generate a plurality of target identification signals, and sending the target identification signals to the topology identification end;
and determining the topological structures of the low-voltage areas corresponding to the terminals to be identified respectively by the topological identification end according to the target identification signals.
Optionally, the step of generating, by the plurality of terminals to be identified in response to the topology identification request, initial identification signals according to unique identification codes respectively corresponding to the plurality of terminals to be identified, and sending the initial identification signals to the plurality of signal forwarding nodes includes:
receiving the topology identification request through the plurality of terminals to be identified;
extracting a control code from the topology identification request;
respectively generating initial identification signals by adopting the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified;
and sending the initial identification signal to a plurality of the signal forwarding nodes.
Optionally, the step of updating the initial identification signal by a plurality of signal forwarding nodes, generating a plurality of target identification signals, and sending the target identification signals to the topology identification end includes:
receiving, by a plurality of the signal forwarding nodes, the initial identification signal;
detecting the signal receiving strength of the initial identification signal;
adding a unique identification code corresponding to the signal forwarding node, the signal receiving intensity and the signal sending intensity corresponding to the signal forwarding node into the initial identification signal to generate a target identification signal corresponding to each signal forwarding node one by one;
and sending the target identification signal to the topology identification end.
Optionally, the step of determining, by the topology identification terminal according to the plurality of target identification signals, low-voltage distribution area topology structures corresponding to the plurality of terminals to be identified includes:
receiving a plurality of target identification signals through the topology recognition terminal;
dividing a plurality of target identification signals into a plurality of identification signal groups according to the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified;
comparing the signal receiving intensity of target identification signals in the plurality of identification signal groups to determine the hierarchical relationship of the low-voltage distribution area topology;
determining the position relation between the plurality of terminals to be identified and the signal forwarding node based on the unique identification codes respectively corresponding to the plurality of terminals to be identified and the unique identification code corresponding to the signal forwarding node;
and determining the topological structure of the low-voltage transformer area by adopting the hierarchical relationship and the position relationship.
The invention also provides a low-voltage distribution area topology identification device, which relates to a topology identification end, a plurality of signal forwarding nodes and a plurality of terminals to be identified which are connected by communication, and comprises the following components:
the unique identification code issuing module is used for responding to the registration requests of the terminal to be identified and the signal forwarding node and respectively issuing unique identification codes to the terminal to be identified and the signal forwarding node through the topology identification end;
a topology identification request broadcasting module, configured to broadcast a topology identification request to the plurality of terminals to be identified through the topology identification terminal;
the initial identification signal generation module is used for responding to the topology identification request through the plurality of terminals to be identified, respectively generating initial identification signals according to unique identification codes respectively corresponding to the plurality of terminals to be identified, and sending the initial identification signals to the plurality of signal forwarding nodes;
the target identification signal generation module is used for updating the initial identification signal through a plurality of signal forwarding nodes, generating a plurality of target identification signals and sending the target identification signals to the topology identification end;
and the low-voltage distribution area topological structure determining module is used for determining the low-voltage distribution area topological structures corresponding to the terminals to be identified respectively through the topological identification end according to the target identification signals.
Optionally, the initial identification signal generating module includes:
a topology identification request receiving submodule, configured to receive the topology identification request through the plurality of terminals to be identified;
the control code extraction submodule is used for extracting a control code from the topology identification request;
the initial identification signal generation submodule is used for respectively generating initial identification signals by adopting the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified;
and the initial identification signal sending submodule is used for sending the initial identification signal to a plurality of signal forwarding nodes.
Optionally, the target identification signal generating module includes:
an initial identification signal receiving submodule, configured to receive the initial identification signal through a plurality of signal forwarding nodes;
a signal reception strength detection submodule for detecting the signal reception strength of the initial identification signal;
a target identification signal generation submodule, configured to add a unique identification code corresponding to the signal forwarding node, the signal receiving strength, and the signal sending strength corresponding to the signal forwarding node to the initial identification signal, and generate a target identification signal corresponding to each signal forwarding node one to one;
and the target identification signal sending submodule is used for sending the target identification signal to the topology recognition end.
Optionally, the low-voltage platform zone topology determining module includes:
a target identification signal receiving submodule, configured to receive a plurality of target identification signals through the topology recognition terminal;
the grouping submodule is used for dividing a plurality of target identification signals into a plurality of identification signal groups according to the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified;
the hierarchical relation determining submodule is used for comparing the signal receiving intensity of the target identification signals in the plurality of identification signal groups and determining the hierarchical relation of the low-voltage distribution area topology;
the position relation determining submodule is used for determining the position relation between the plurality of terminals to be identified and the signal forwarding node based on the unique identification codes respectively corresponding to the plurality of terminals to be identified and the unique identification code corresponding to the signal forwarding node;
and the low-voltage distribution area topological structure determining submodule is used for determining the low-voltage distribution area topological structure by adopting the hierarchical relationship and the position relationship.
The invention also provides an electronic device, which comprises a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the low-voltage distribution area topology identification method.
The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by the processor, implements the low-voltage station topology identification method described above.
According to the technical scheme, the invention has the following advantages:
in the embodiment of the invention, a topology identification terminal responds to a registration request to issue a unique identification code, and a plurality of signal forwarding nodes receive initial identification signals returned by a plurality of terminals to be identified in response to the topology identification request and update the initial identification signals to generate target identification signals; and finally, the topology recognition end receives the target identification signal and determines the low-voltage distribution area topology structures corresponding to the terminals to be recognized respectively according to the target identification signal, so that the technical problems that the topology recognition cost is high and the recognition efficiency and the recognition accuracy cannot be guaranteed simultaneously in the prior art are solved, and the topology recognition efficiency and the accuracy are improved.
Drawings
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 described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a flowchart illustrating steps of a low-voltage distribution area topology identification method according to an embodiment of the present invention;
fig. 2 is a flowchart illustrating steps of a method for identifying a low-voltage distribution area topology according to an alternative embodiment of the present invention;
fig. 3 is a schematic structural diagram of a low-voltage distribution area topology according to an embodiment of the present invention;
fig. 4 is a block diagram of a low-voltage distribution area topology identification apparatus according to an embodiment of the present invention.
Detailed Description
At present, the intelligent transformation of a main grid structure in a power grid is basically completed, the intelligent transformation of 400V is still insufficient, the problems of untimely low-voltage power rush repair, poor low-voltage power quality, high low-voltage line loss and the like are mainly presented, and the part of the power grid directly faces to a large number of power users. The construction success of this part of the grid will directly affect the customer service level and customer satisfaction. In addition, the low-voltage problem caused by various problems such as complex structure, multiple points, wide range and the like of the low-voltage grid structure is not solved well. Recently, with the proposition of the concepts of the ubiquitous power internet of things of the national power grid and the transparent power grid of the southern power grid, a plurality of research institutions propose corresponding solutions, all use the cloud pipe edge end of the internet of things as a basic framework, use a bottom sensing physical layer as a bottommost sensing terminal, use micro-power wireless or power carrier as a communication pipeline for platform area management, use a rack intelligent terminal as a management terminal of a low-voltage platform area, use a high-speed wireless network or an optical fiber as a connecting pipeline between the rack edge and a cloud end, realize the intelligentization and transparence transformation of the low-voltage platform area, and solve the problems of low voltage, unbalanced three phases, too high line loss, complex low-voltage grid structure, untimely rush repair and the like faced by the low-voltage platform area.
The embodiment of the invention provides a low-voltage distribution area topology identification method, a low-voltage distribution area topology identification device, low-voltage distribution area topology identification equipment and a storage medium, and aims to solve the technical problems that in the prior art, the topology identification cost is high, and the identification efficiency and the identification accuracy cannot be guaranteed at the same time.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating steps of a low-voltage distribution area topology identification method according to an embodiment of the present invention.
The invention provides a low-voltage distribution area topology identification method, which relates to a topology identification end, a plurality of signal forwarding nodes and a plurality of terminals to be identified which are connected in a communication way, and comprises the following steps:
step 101, responding to the registration requests of the terminal to be identified and the signal forwarding node, and respectively issuing unique identification codes to the terminal to be identified and the signal forwarding node through a topology identification end;
in a specific implementation, the installation of the terminal to be identified generally needs to be registered at the topology identification end to inform the topology identification end that a new terminal is installed in the mortgage zone topology. The terminal to be identified and the signal forwarding node can send a registration request to the topology identification end, and the topology identification end responds to the registration request and respectively issues unique identification codes, such as the unique identification codes in the 4-bit 16-system number format, for each terminal to be identified and each signal forwarding node.
It should be noted that the unique identification code is not changed before the terminal to be identified or the signal forwarding node is migrated and modified, and after the terminal to be identified or the signal forwarding node is migrated and modified, the unique identification code is re-issued by the topology identification end of the new low-voltage distribution area topology, so as to ensure the position accuracy of each terminal to be identified.
Step 102, broadcasting a topology identification request to the plurality of terminals to be identified through the topology identification terminal;
in the embodiment of the invention, the topology identification request is broadcasted to a plurality of terminals to be identified by the topology identification terminal so as to start the identification process of the low-voltage distribution area topology.
103, responding to the topology identification request through the plurality of terminals to be identified, respectively generating initial identification signals according to unique identification codes respectively corresponding to the plurality of terminals to be identified, and sending the initial identification signals to the plurality of signal forwarding nodes;
after receiving the topology identification request, the multiple terminals to be identified respond to the topology identification request, respectively generate respective initial identification signals, and send the initial identification signals to the multiple signal forwarding nodes, and the multiple signal forwarding nodes perform next forwarding.
104, updating the initial identification signal through a plurality of signal forwarding nodes to generate a plurality of target identification signals, and sending the target identification signals to the topology identification end;
in the embodiment of the invention, each signal forwarding node and each terminal to be identified have the unique identification code, but the forwarding relation between the signal forwarding nodes cannot be known only through the unique identification code. In order to identify the topology hierarchical relationship formed by the signal forwarding nodes, when the signal forwarding nodes receive the initial identification signals, the initial identification signals are updated, target identification signals are generated, and the target identification signals are sent to the topology identification end.
And 105, determining the low-voltage distribution area topological structures corresponding to the terminals to be identified respectively through the topological identification end according to the target identification signals.
In an example of the present invention, after the initial identification signal is updated by the multiple signal forwarding nodes to generate a target identification signal, the topology identification end receives the target identification signal, and then determines the low-voltage distribution area topology corresponding to the terminal to be identified according to the multiple target identification signals.
In the embodiment of the invention, a topology identification terminal responds to a registration request to issue a unique identification code, and a plurality of signal forwarding nodes receive initial identification signals returned by a plurality of terminals to be identified in response to the topology identification request and update the initial identification signals to generate target identification signals; and finally, the topology recognition end receives the target identification signal and determines the low-voltage distribution area topology structures corresponding to the terminals to be recognized respectively according to the target identification signal, so that the technical problems that the topology recognition cost is high and the recognition efficiency and the recognition accuracy cannot be guaranteed simultaneously in the prior art are solved, and the topology recognition efficiency and the accuracy are improved.
Referring to fig. 2, fig. 2 is a flowchart illustrating steps of a low-voltage station topology identification method according to an alternative embodiment of the present invention.
The invention provides a low-voltage distribution area topology identification method, which relates to a topology identification end, a plurality of signal forwarding nodes and a plurality of terminals to be identified, wherein the topology identification end is connected with the communication, and the method comprises the following steps:
step 201, responding to the registration requests of the terminal to be identified and the signal forwarding node, and respectively issuing unique identification codes to the terminal to be identified and the signal forwarding node through a topology identification end;
step 202, broadcasting a topology identification request to the plurality of terminals to be identified through the topology identification terminal;
in the embodiment of the present invention, the specific implementation process of steps 201-202 is similar to that of steps 101-102, and is not described herein again.
Optionally, the step 103 can be replaced by the following steps 203-206:
step 203, receiving the topology identification request through the plurality of terminals to be identified;
in the embodiment of the invention, the terminal to be identified can be a user ammeter, and because the topology identification request is broadcasted by the topology identification end, a plurality of terminals to be identified can receive the topology identification request.
Step 204, extracting a control code from the topology identification request;
in an example of the present invention, after receiving a topology identification request, a plurality of terminals to be identified may determine information requested to be returned by the topology identification request sent by the topology identification terminal by extracting a control code from the topology identification request.
Step 205, generating initial identification signals respectively by using the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified, and the signal transmission strengths respectively corresponding to the plurality of terminals to be identified;
in a specific implementation, in order to respond to a topology identification request, an initial identification signal of each terminal to be identified needs to be generated. The control code, the unique identification code corresponding to each terminal to be identified and the signal sending intensity are included, so that the subsequent topology identification end can identify the source of the signal, and the generated initial identification signal can be as follows:
C1 C2 R01 R02 R03 R04 S01 S02
wherein, C1And C2Represents the control code, the R01、R02、R03And R04The unique identification code representing the terminal to be identified is represented by a 4-bit 16-system number, and S is01And S02Indicating the signal transmission strength of the terminal to be identified.
Step 206, sending the initial identification signal to a plurality of the signal forwarding nodes.
In an optional embodiment of the present invention, after the terminal to be identified generates the initial identification signal, the initial identification signal is sent to a plurality of signal forwarding nodes, so as to enter a signal forwarding process of a low-voltage distribution area topology.
Step 207, updating the initial identification signal through a plurality of signal forwarding nodes, generating a target identification signal corresponding to each signal forwarding node one to one, and sending the target identification signal to the topology identification end;
as can be known from the signal relay characteristics, the signal strength captured by the directly connected node is different from the node strength signal captured by the indirectly connected node, so that the target identification signals updated by the plurality of signal forwarding nodes are also different, and the specific updating process may further include the following sub-steps S11-S14:
substep S11, receiving the initial identification signal by a plurality of the signal forwarding nodes;
a substep S12 of detecting a signal reception strength of the initial identification signal;
a substep S13, adding a unique identification code corresponding to the signal forwarding node, the signal receiving strength and the signal sending strength corresponding to the signal forwarding node to the initial identification signal, and generating a target identification signal corresponding to each signal forwarding node one to one;
and a substep S14, sending the target identification signal to the topology identification terminal.
In the embodiment of the invention, after a plurality of signal forwarding nodes receive the initial identification signal, the target identification signal corresponding to each signal forwarding node one to one is generated by detecting the signal receiving intensity of the initial identification signal and combining the unique identification code corresponding to the signal forwarding node and the signal sending intensity, and the target identification signal is sent to the topology identification end.
It is worth mentioning that the target identification signal after updating the initial identification signal can be as follows:
C1 C2 R01 R02 R03 R04 S01 S02 R11 R12 R13 R14 S11 S12 S11’ S12’ … …. …
wherein, all the data are 16-system code, C1And C2Represents the control code, the R01、R02、R03And R04The unique identification code representing the terminal to be identified is represented by a 4-bit 16-system number, and S is01And S02Representing the signal transmission intensity of the terminal to be identified; r11、R12、R13And R14A unique identification code, S, corresponding to said signal forwarding node11And S12Signal reception strength, S, for said signal forwarding node11' and S12' is the signal transmission strength of the signal forwarding node.
And 208, determining the low-voltage distribution area topological structures corresponding to the terminals to be identified respectively through the topology identification end according to the target identification signals.
In one example of the present invention, the step 208 may include the following sub-steps S21-S25:
a substep S21 of receiving a plurality of said target identification signals through said topology identification terminal;
a substep S22 of dividing the target identification signals into a plurality of identification signal groups according to the control code, the unique identification codes respectively corresponding to the terminals to be identified, and the signal transmission strengths respectively corresponding to the terminals to be identified;
in the embodiment of the invention, after a plurality of signal forwarding nodes are updated to obtain target identification signals, a plurality of target identification signals are received through a topology identification end, and whether the target identification signals are returned by a terminal to be identified for responding to a topology identification request is determined through the control code; and then determining the terminal to be identified corresponding to the target identification signal according to the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified. And dividing the target identification signals into a plurality of identification signal groups according to the identification signal groups so as to determine the topological structure of the low-voltage distribution area corresponding to each terminal to be identified.
A substep S23 of comparing the signal reception intensities of the target identification signals in the plurality of identification signal groups and determining the hierarchical relationship of the low-voltage distribution area topology;
in another example of the present invention, the terminal to be identified compares the signal receiving strength of the target identification signal in the plurality of identification signal groups to determine the hierarchical relationship of the low-voltage distribution area topology, and the specific comparison process is as follows:
the first 6-bit 16-ary number in the data segment is the unique identification code corresponding to the terminal to be identified and the signal transmission intensity thereof, the first 8-bit 16-ary number is the unique identification code corresponding to the initial identification code transmitted by the terminal to be identified through the penultimate second layer signal forwarding node, the signal receiving intensity and the signal transmission intensity, and so on until the next level branch of the topology identification terminal.
The method for directly connecting the penultimate nodes of the end electric meters is as follows: comparing the last two bits in the first 8-bit 16-ary number with the same first 6-bit 16-ary number, and knowing from the characteristics of signal relay that the signal intensity captured by the directly connected nodes is stronger than the node intensity signal captured by the non-directly connected nodes, so that the upper node of the terminal to be identified can be determined by comparing the second six bits with the same topology signal of the first six bits; by the analogy, the node … at the penultimate layer and the node … at the penultimate layer, which are directly connected with the terminal to be identified, can be determined until the topology identification terminal sorts the topology signals forwarded by the branch nodes, and then the signal forwarding nodes at each layer can be determined.
A substep S24, determining the position relationship between the multiple terminals to be identified and the signal forwarding node based on the unique identification codes corresponding to the multiple terminals to be identified respectively and the unique identification code corresponding to the signal forwarding node;
optionally, based on the respective unique identification codes of the multiple terminals to be identified and the signal forwarding nodes, the position relationship between each terminal to be identified and each signal forwarding node may be known.
And a substep S25, determining the topological structure of the low-voltage transformer area by adopting the hierarchical relationship and the position relationship.
Further, the topological structure of the low-voltage transformer area is determined by adopting the hierarchical relation and the position relation.
Referring to fig. 3, the determined topology of the low-voltage transformer area may be as shown in fig. 3, where the terminals to be identified may be an electricity meter 1, an electricity meter 2, an electricity meter 3 … … and an electricity meter 8; the branch topology 1, the branch topology 2 and the branch topology 3 comprise a plurality of topology forwarding nodes, and the low-voltage platform area topology structure further comprises a topology identification end.
In the embodiment of the invention, the topology identification end responds to the registration requests of the terminal to be identified and the signal forwarding node to respectively issue the unique identification codes, and simultaneously broadcasts the topology identification request to a plurality of terminals to be identified; after receiving the topology identification request, the multiple terminals to be identified extract the control code from the topology identification request, generate an initial identification signal by combining the corresponding unique identification code and the signal sending intensity, send the initial identification signal to the multiple signal forwarding nodes, update the initial identification signal through the multiple signal forwarding nodes to generate target identification signals corresponding to each signal forwarding node one by one, and finally send the target identification signals to the topology identification end, and the topology identification end determines the low-voltage station area topology structure according to the comparison condition of the signal receiving intensity in the target identification signals and the unique identification code. Therefore, the technical problems that in the prior art, the cost of topology identification is high, and the identification efficiency and the identification accuracy cannot be guaranteed at the same time are solved, and the efficiency and the accuracy of topology identification are improved.
Referring to fig. 4, fig. 4 shows a block diagram of a low-voltage distribution area topology identification apparatus according to an embodiment of the present invention, which relates to a topology identification end, a plurality of signal forwarding nodes, and a plurality of terminals to be identified in communication connection, and the apparatus includes:
a unique identifier issuing module 401, configured to respond to registration requests of the terminal to be identified and the signal forwarding node, and issue unique identifiers to the terminal to be identified and the signal forwarding node through a topology identification end respectively;
a topology identification request broadcasting module 402, configured to broadcast a topology identification request to the plurality of terminals to be identified through the topology identification terminal;
an initial identification signal generating module 403, configured to respond to the topology identification request through the multiple terminals to be identified, generate initial identification signals according to unique identification codes respectively corresponding to the multiple terminals to be identified, and send the initial identification signals to the multiple signal forwarding nodes;
a target identification signal generating module 404, configured to update the initial identification signal through a plurality of signal forwarding nodes, generate a plurality of target identification signals, and send the target identification signals to the topology identification end;
and a low-voltage distribution area topological structure determining module 405, configured to determine, by the topology recognizing end, low-voltage distribution area topological structures corresponding to the multiple terminals to be recognized, respectively, according to the multiple target identification signals.
Optionally, the initial identification signal generating module 403 includes:
a topology identification request receiving submodule, configured to receive the topology identification request through the plurality of terminals to be identified;
the control code extraction submodule is used for extracting a control code from the topology identification request;
the initial identification signal generation submodule is used for respectively generating initial identification signals by adopting the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified;
and the initial identification signal sending submodule is used for sending the initial identification signal to a plurality of signal forwarding nodes.
Optionally, the target identification signal generating module 404 includes:
an initial identification signal receiving submodule, configured to receive the initial identification signal through a plurality of signal forwarding nodes;
a signal reception strength detection submodule for detecting the signal reception strength of the initial identification signal;
a target identification signal generation submodule, configured to add a unique identification code corresponding to the signal forwarding node, the signal receiving strength, and the signal sending strength corresponding to the signal forwarding node to the initial identification signal, and generate a target identification signal corresponding to each signal forwarding node one to one;
and the target identification signal sending submodule is used for sending the target identification signal to the topology recognition end.
Optionally, the low-voltage station zone topology determining module 405 includes:
a target identification signal receiving submodule, configured to receive a plurality of target identification signals through the topology recognition terminal;
the grouping submodule is used for dividing a plurality of target identification signals into a plurality of identification signal groups according to the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified;
the hierarchical relation determining submodule is used for comparing the signal receiving intensity of the target identification signals in the plurality of identification signal groups and determining the hierarchical relation of the low-voltage distribution area topology;
the position relation determining submodule is used for determining the position relation between the plurality of terminals to be identified and the signal forwarding node based on the unique identification codes respectively corresponding to the plurality of terminals to be identified and the unique identification code corresponding to the signal forwarding node;
and the low-voltage distribution area topological structure determining submodule is used for determining the low-voltage distribution area topological structure by adopting the hierarchical relationship and the position relationship.
An embodiment of the present invention further provides an electronic device, which includes a memory and a processor, where the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of the low-voltage distribution area topology identification method according to any of the above embodiments.
The embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by the processor, implements the low-voltage platform topology identification method according to any of the above embodiments.
It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.
In the embodiments provided in the present invention, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (8)

1. A topology identification method for a low-voltage distribution area is characterized by involving a topology identification end, a plurality of signal forwarding nodes and a plurality of terminals to be identified which are connected in a communication manner, and comprises the following steps:
responding to the registration requests of the terminal to be identified and the signal forwarding node, and respectively issuing unique identification codes to the terminal to be identified and the signal forwarding node through a topology identification end;
broadcasting a topology identification request to the plurality of terminals to be identified through the topology identification terminal;
responding to the topology identification request through the plurality of terminals to be identified, respectively generating initial identification signals according to unique identification codes respectively corresponding to the plurality of terminals to be identified, and sending the initial identification signals to the plurality of signal forwarding nodes;
updating the initial identification signal through a plurality of signal forwarding nodes to generate a plurality of target identification signals, and sending the target identification signals to the topology identification end;
determining, by the topology identification terminal, a low-voltage distribution area topology structure corresponding to each of the terminals to be identified according to the target identification signals;
the step of responding to the topology identification request through the plurality of terminals to be identified, respectively generating initial identification signals according to unique identification codes respectively corresponding to the plurality of terminals to be identified, and sending the initial identification signals to the plurality of signal forwarding nodes comprises the following steps:
receiving the topology identification request through the plurality of terminals to be identified;
extracting a control code from the topology identification request;
respectively generating initial identification signals by adopting the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified;
and sending the initial identification signal to a plurality of the signal forwarding nodes.
2. The method of claim 1, wherein the step of updating the initial identification signal by a plurality of signal forwarding nodes to generate a plurality of target identification signals to be sent to the topology identification end comprises:
receiving, by a plurality of the signal forwarding nodes, the initial identification signal;
detecting the signal receiving strength of the initial identification signal;
adding a unique identification code corresponding to the signal forwarding node, the signal receiving intensity and the signal sending intensity corresponding to the signal forwarding node into the initial identification signal to generate a target identification signal corresponding to each signal forwarding node one by one;
and sending the target identification signal to the topology identification end.
3. The method according to claim 2, wherein the step of determining, by the topology identification terminal, the topology structures of the low-voltage transformer areas corresponding to the terminals to be identified according to the target identification signals includes:
receiving a plurality of target identification signals through the topology recognition terminal;
dividing a plurality of target identification signals into a plurality of identification signal groups according to the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified;
comparing the signal receiving intensity of target identification signals in the plurality of identification signal groups to determine the hierarchical relationship of the low-voltage distribution area topology;
determining the position relation between the plurality of terminals to be identified and the signal forwarding node based on the unique identification codes respectively corresponding to the plurality of terminals to be identified and the unique identification code corresponding to the signal forwarding node;
and determining the topological structure of the low-voltage transformer area by adopting the hierarchical relationship and the position relationship.
4. A topology identification device for a low-voltage transformer area is characterized by relating to a topology identification end, a plurality of signal forwarding nodes and a plurality of terminals to be identified which are connected in a communication manner, and the device comprises:
the unique identification code issuing module is used for responding to the registration requests of the terminal to be identified and the signal forwarding node and respectively issuing unique identification codes to the terminal to be identified and the signal forwarding node through the topology identification end;
a topology identification request broadcasting module, configured to broadcast a topology identification request to the plurality of terminals to be identified through the topology identification terminal;
the initial identification signal generation module is used for responding to the topology identification request through the plurality of terminals to be identified, respectively generating initial identification signals according to unique identification codes respectively corresponding to the plurality of terminals to be identified, and sending the initial identification signals to the plurality of signal forwarding nodes;
the target identification signal generation module is used for updating the initial identification signal through a plurality of signal forwarding nodes, generating a plurality of target identification signals and sending the target identification signals to the topology identification end;
the low-voltage distribution area topological structure determining module is used for determining the low-voltage distribution area topological structures corresponding to the terminals to be identified respectively through the topological identification end according to the target identification signals;
the initial identification signal generation module includes:
a topology identification request receiving submodule, configured to receive the topology identification request through the plurality of terminals to be identified;
the control code extraction submodule is used for extracting a control code from the topology identification request;
the initial identification signal generation submodule is used for respectively generating initial identification signals by adopting the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified;
and the initial identification signal sending submodule is used for sending the initial identification signal to a plurality of signal forwarding nodes.
5. The apparatus of claim 4, wherein the target identification signal generation module comprises:
an initial identification signal receiving submodule, configured to receive the initial identification signal through a plurality of signal forwarding nodes;
a signal reception strength detection submodule for detecting the signal reception strength of the initial identification signal;
a target identification signal generation submodule, configured to add a unique identification code corresponding to the signal forwarding node, the signal receiving strength, and the signal sending strength corresponding to the signal forwarding node to the initial identification signal, and generate a target identification signal corresponding to each signal forwarding node one to one;
and the target identification signal sending submodule is used for sending the target identification signal to the topology recognition end.
6. The apparatus of claim 5, wherein the low-pressure station zone topology determination module comprises:
a target identification signal receiving submodule, configured to receive a plurality of target identification signals through the topology recognition terminal;
the grouping submodule is used for dividing a plurality of target identification signals into a plurality of identification signal groups according to the control code, the unique identification codes respectively corresponding to the plurality of terminals to be identified and the signal sending strengths respectively corresponding to the plurality of terminals to be identified;
the hierarchical relation determining submodule is used for comparing the signal receiving intensity of the target identification signals in the plurality of identification signal groups and determining the hierarchical relation of the low-voltage distribution area topology;
the position relation determining submodule is used for determining the position relation between the plurality of terminals to be identified and the signal forwarding node based on the unique identification codes respectively corresponding to the plurality of terminals to be identified and the unique identification code corresponding to the signal forwarding node;
and the low-voltage distribution area topological structure determining submodule is used for determining the low-voltage distribution area topological structure by adopting the hierarchical relationship and the position relationship.
7. An electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and wherein the computer program, when executed by the processor, causes the processor to perform the steps of the low-voltage station topology identification method according to any one of claims 1 to 3.
8. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a low-voltage station topology identification method according to any one of claims 1 to 3.
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