Power supply topology identification method and system based on fusion terminal and dual-mode communication

Abstract

The application discloses a transformer area power topology identification method and system based on a fusion terminal and dual-mode communication, and is applied to the technical field of intelligent communication. The method comprises the following steps: a fusion terminal broadcasts a first networking signal; a dual-mode communication module sends a first time stamp; an end module is screened out; the end module broadcasts a second networking signal, and the dual-mode communication module sends a second time stamp; the fusion terminal screens out a communication branch corresponding to the end module according to the second time stamp; the fusion terminal repeatedly selects a new end module and sends the second networking signal to screen the communication branch until all the communication branches are screened out; and the fusion terminal constructs a transformer area power topology according to all the communication branches. The application collects time stamps generated by trigger signals in a wireless communication mode, and determines the relationship between each user in a transformer area power grid according to the time stamps to generate a topology network. The topology identification can be quickly completed in a low-voltage transformer area with complex wiring, and the application has strong applicability.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of intelligent communication technology, in particular to a transformer area power topology identification method and system based on a fusion terminal and dual-mode communication. BACKGROUND

[0002] Power line carrier communication technology is a technology that uses existing power lines as transmission media to superimpose high-frequency communication signals on the transmission of electric energy to realize data communication. Its core principle is to convert the data signal to be transmitted into a high-frequency carrier signal suitable for transmission on the power line through a modem, couple it to the low-voltage or medium-high voltage power line, and use the power line network for transmission. Compared with wireless communication technology, power line carrier communication has better transmission stability, so it has been widely promoted in transformer area data collection.

[0003] However, the topology of the current transformer area power grid needs to be known when power line carrier communication is networked. Although there are some adaptive power grid topology identification technologies, in some old transformer area lines, the wiring is more chaotic, and there are many line access points. The signals sent by the master control will frequently emit and refract in the line, affecting topology identification.

[0004] In the prior art, a routing method suitable for a power line carrier communication network is disclosed in Chinese Patent No. 201610402867.9; it includes the following steps: broadcasting a beacon frame with a degree parameter value from the master node as the starting point; the ordinary node updates the degree parameter value of the node according to the degree parameter value in the beacon frame, and establishes a gradient topology network with the degree parameter value increasing layer by layer after circulating the entire communication network; the ordinary node updates the parent-child relationship pair of the node according to the source node of the beacon frame, broadcasts a topology information frame with the parent-child relationship pair, and circulates until the master node receives the topology information frame, establishing a routing table of the entire communication network. When the master node communicates with the terminal node, the master node queries the routing table and transmits to the relay node according to the routing table and channel quality information, and in turn transmits until it is transmitted to the terminal node; when the terminal node communicates with the master node, the terminal node broadcasts the data packet to the relay node layer by layer according to the degree parameter value, and in turn transmits until it is transmitted to the master node. As can be seen from the above, if it is applied to a transformer area with many access points, the parent-child relationship between nodes is difficult to confirm through signal transmission. SUMMARY

[0005] In order to at least overcome the above-mentioned deficiencies in the prior art, the purpose of the present application is to provide a transformer area power topology identification method and system based on a fusion terminal and dual-mode communication.

[0006] In a first aspect, the embodiments of the present application provide a transformer area power topology identification method based on a fusion terminal and dual-mode communication, comprising:

[0007] The fusion terminal configured at the power distribution side broadcasts a first network signal to the transformer area in the form of power carrier communication;

[0008] The dual-mode communication module configured at the user side sends a first time stamp of the time when the first network signal is received to the fusion terminal in the form of wireless communication;

[0009] The fusion terminal screens out the end module according to the first time stamp; the end module is the dual-mode communication module with the latest time of the first time stamp;

[0010] The end module broadcasts a second network signal in the form of power carrier communication, and the dual-mode communication module sends a second time stamp to the fusion terminal in the form of wireless communication; the second time stamp is the time when the dual-mode communication module receives or sends the second network signal;

[0011] The fusion terminal screens out the communication branch corresponding to the end module according to the second time stamp;

[0012] The fusion terminal repeats selecting a new end module and sending the second network signal to screen the communication branch until all the communication branches are screened out; the new end module is the dual-mode communication module with the latest time of the first time stamp except the known communication branch;

[0013] The fusion terminal constructs the transformer area power topology according to all the communication branches.

[0014] In a possible implementation, the fusion terminal screens out the end module according to the first time stamp, which includes:

[0015] The fusion terminal sorts the dual-mode communication modules according to the first time stamp to form a first queue;

[0016] The fusion terminal takes the dual-mode communication module with the latest time of the first time stamp in the first queue as the end module.

[0017] In a possible implementation, the fusion terminal screens out the communication branch corresponding to the end module according to the second time stamp, which includes:

[0018] The fusion terminal sorts the dual-mode communication modules according to the second time stamp to form a second queue;

[0019] The fusion terminal screens out the communication branch corresponding to the end module according to the second queue.

[0020] In a possible implementation, the fusion terminal screens out the communication branch corresponding to the end module according to the second queue, which includes:

[0021] The fusion terminal takes the double-mode communication module that repeatedly appears in the second queue as a communication node of a communication branch in which the terminal module is located;

[0022] The fusion terminal sorts all the communication nodes in the second queue according to the order in which they first appear in the second queue to form the communication branch, and the terminal of the communication branch is the terminal module. In a possible implementation, repeatedly selecting a new terminal module includes:

[0023] Before each time a new terminal module is selected, the fusion terminal removes all known double-mode communication modules of the communication branch from the first queue to form a new first queue; the first queue is formed by sorting double-mode communication modules according to the first time stamp;

[0024] The fusion terminal takes the double-mode communication module with the latest first time stamp in the new first queue as a new terminal module.

[0025] In a possible implementation, the judgment that all communication branches have been screened out includes:

[0026] When the number of double-mode communication modules in the first queue is 0, the fusion terminal judges that all communication branches have been screened out.

[0027] In a possible implementation, the fusion terminal constructs the power supply area power topology according to all the communication branches includes:

[0028] The fusion terminal connects the communication branches in turn from the double-mode communication module at the head end to the double-mode communication module at the terminal to form a communication link;

[0029] The head end of all the communication links is connected to the fusion terminal to form the power supply area power topology.

[0030] In a second aspect, the embodiments of the present application provide a power supply area power topology identification system based on a fusion terminal and double-mode communication, which includes:

[0031] The fusion terminal is configured at the power distribution side;

[0032] The double-mode communication module is configured at the user side;

[0033] The fusion terminal is configured to:

[0034] broadcast a first networking signal in the power supply area in the form of power carrier communication;

[0035] receive a first time stamp of a moment when the double-mode communication module receives the first networking signal sent by the double-mode communication module in the form of wireless communication;

[0036] The fusion terminal screens out the end module according to the first timestamp; the end module is a dual-mode communication module with the latest time of the first timestamp;

[0037] The end module is controlled to broadcast a second network signal in a power carrier communication mode, and a second timestamp sent by the dual-mode communication module in a wireless communication mode is received; the second timestamp is the time when the dual-mode communication module receives or sends the second network signal; a communication branch corresponding to the end module is screened out according to the second timestamp;

[0038] The process of selecting a new end module and sending a second network signal to screen a communication branch is repeated until all communication branches are screened out; the new end module is a dual-mode communication module with the latest time of the first timestamp except for the known communication branch;

[0039] A power distribution area power topology is constructed according to all the communication branches.

[0040] In a possible implementation, the fusion terminal is further configured to:

[0041] The dual-mode communication modules are sorted according to the second timestamp to form a second queue;

[0042] The communication branch corresponding to the end module is screened out according to the second queue.

[0043] In a possible implementation, the fusion terminal is further configured to:

[0044] The dual-mode communication module that repeatedly appears in the second queue is taken as a communication node of the communication branch where the end module is located;

[0045] All the communication nodes in the second queue are sorted according to the order of first appearance in the second queue to form the communication branch, and the end of the communication branch is the end module.

[0046] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0047] The present application is based on a power distribution area power topology identification method and system of a fusion terminal and a dual-mode communication, time stamps generated by a trigger signal are collected in a wireless communication mode, and the relationship between each user in the power distribution area power grid is determined according to the time stamps to generate a topology network, which can quickly complete topology identification in a low-voltage power distribution area with complex wiring, and has strong applicability. BRIEF DESCRIPTION OF DRAWINGS

[0048] The accompanying drawings, which are included to provide a further understanding of the embodiments of the application and constitute a part of this application, do not constitute a limitation to the embodiments of the application. In the drawings:

[0049] Figure 1 For the embodiment method steps of the present application;

[0050] Figure 2 For the embodiment power grid of the present application. DETAILED DESCRIPTION

[0051] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. It should be understood that the drawings in the present application only serve the purpose of illustration and description, and do not limit the scope of protection of the present application. In addition, it should be understood that the schematic drawings are not drawn to scale. The flowchart shows the operations implemented according to some embodiments of the present application. It should be understood that the operations of the flowchart can not be implemented in sequence, and the steps without logical context relationship can be reversed in sequence or implemented simultaneously. In addition, one or more other operations can be added to the flowchart or removed from the flowchart under the guidance of the content of the present application.

[0052] In addition, the described embodiments are only some of the embodiments of the present application, not all. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0053] Please refer to Figure 1 The flowchart of the power topology identification method based on the fusion terminal and the dual-mode communication provided by the embodiments of the present application, further, the power topology identification method based on the fusion terminal and the dual-mode communication can specifically include the contents described in the following steps S1-S7.

[0054] S1: The fusion terminal configured at the power distribution side broadcasts a first networking signal to the power area in the form of power carrier communication;

[0055] S2: The dual-mode communication module configured at the user side sends a first time stamp of the moment when the first networking signal is received to the fusion terminal through wireless communication;

[0056] S3: The fusion terminal screens out the end module according to the first time stamp; the end module is the dual-mode communication module with the latest time of the first time stamp;

[0057] S4: The terminal module broadcasts a second networking signal via power carrier communication, and the dual-mode communication module sends a second timestamp to the converged terminal via wireless communication; the second timestamp is the moment when the dual-mode communication module receives or sends the second networking signal;

[0058] S5: The fusion terminal selects a communication branch corresponding to the terminal module according to the second timestamp;

[0059] S6: The fusion terminal repeatedly selects a new terminal module and sends a second network signal to filter communication branches until all communication branches are filtered out; when the new terminal module is a dual-mode communication module excluding the known communication branches, the dual-mode communication module with the latest first timestamp time;

[0060] S7: The fusion terminal constructs a substation power topology based on all the communication branches.

[0061] When the embodiments of the present application are implemented, the fusion terminal needs to have the capabilities of wireless communication and power carrier dual-mode communication; the fusion terminal is configured on the distribution side and the fusion terminal needs to be able to send power carrier communication signals on one phase or all phases on the distribution side; the fusion terminal and the dual-mode communication module need to be wirelessly networked after configuration, which belongs to the existing technology and is not limited in the embodiments of the present application.

[0062] In the embodiment of the present application, the fusion terminal also needs to be networked with the dual-mode communication module for power carrier communication. At this time, an accurate topological structure within the substation is required; when the fusion terminal broadcasts the first networking signal to the substation in the form of power carrier communication, it can broadcast to a single phase, or it can broadcast to two phases or three phases. The embodiment of the present application does not limit this. It should be understood that, due to the lack of substation power grid topology, power carrier communication has not yet been networked. The fusion terminal and the dual-mode communication module still have basic signal receiving and sending functions in power carrier communication, but do not have point-to-point or point-to-multi-communication capabilities and can only broadcast signals. The first broadcast networking signal will be received by the dual-mode communication modules configured on the user side of all the subordinate phases of the broadcast; the dual-mode communication module described here is a dual-mode module for wireless communication and power carrier communication; when the dual-mode communication module receives the first networking signal, it will generate a first timestamp; this timestamp can represent the distance from the dual-mode communication module to the fusion terminal.

[0063] In an embodiment of the present application, the dual-mode communication module with the latest time corresponding to the first timestamp indicates that at the physical level of the line, it must be the dual-mode communication module at the end of a branch path, that is, the end module; therefore, the embodiment of the present application identifies the branch link corresponding to the end module based on the end module.

[0064] In the embodiment of the present application, the end module also broadcasts the second network signal in the form of power carrier communication, and when the other dual-mode communication module receives the second network signal, a second time stamp is generated; the time stamp can represent the distance between the dual-mode communication module and the end module. Therefore, the communication branch where the end module is located can be identified according to the time stamp.

[0065] In the embodiment of the present application, by eliminating the known communication branch, the dual-mode communication module farthest from the fusion terminal among the remaining dual-mode communication modules can be re-screened, which is also the end dual-mode communication module of a certain branch path, and the corresponding communication branch can be screened out by the same way as described above. Linking based on all communication branches can form the power grid topology in the transformer area.

[0066] In a possible implementation, the fusion terminal screens out the end module according to the first time stamp, and the method comprises the following steps.

[0067] The fusion terminal sorts the dual-mode communication modules according to the first time stamp to form a first queue;

[0068] The fusion terminal takes the dual-mode communication module with the latest first time stamp in the first queue as the end module.

[0069] When the first network signal broadcast by the trunk line where the fusion terminal is located meets a branch, refraction and reflection occur, the refracted signal enters the branch, the reflected signal propagates back along the trunk line, and the transmitted signal continues to propagate forward along the trunk line; after the refracted signal enters the branch, it is detected by the dual-mode communication module configured on the user side in the branch, at this time, the dual-mode communication module obtains the first time stamp and sends it to the fusion terminal; although the refracted signal will refract or reflect again in the branch, but the intensity of the refracted signal and the reflected signal will be much lower than that of the transmitted signal, so after multiple refractions and reflections, the signal intensity will be very low and will be identified as noise at the dual-mode communication module and thus shielded. Generally speaking, for the first network signal, each dual-mode communication module receives the signal after twice refraction, and when an additional refraction or reflection occurs, the signal intensity will be greatly reduced. Therefore, for each dual-mode communication module, it can be considered that it will only receive the first network signal once, and send the first time stamp once. For the first time stamp, the sorting queue method is adopted, which can more easily find the end model with the latest time stamp.

[0070] In a possible implementation, the fusion terminal screens out the communication branch corresponding to the end module according to the second time stamp, and the method comprises the following steps.

[0071] The fusion terminal sorts the dual-mode communication modules according to the second time stamp to form a second queue;

[0072] The fusion terminal screens out a communication branch corresponding to the terminal module according to the second queue.

[0073] In a possible implementation, the screening out of the communication branch corresponding to the terminal module according to the second queue by the fusion terminal includes:

[0074] The fusion terminal takes the double-mode communication module repeatedly appearing in the second queue as a communication node of the communication branch in which the terminal module is located.

[0075] The fusion terminal sorts all the communication nodes in the second queue in the order of first appearance in the second queue to form the communication branch, and the terminal of the communication branch is the terminal module.

[0076] In the implementation of the embodiment of the present application, when the second network signal transmits from the branch into the trunk and propagates towards the fusion terminal, the second network signal will be refracted into other branches at the junctions of the other branches. The second network signal entering the other branches will be refracted into the user side of the corresponding branch. Since the second refraction has occurred, the second network signal entering the other branches will not be received twice by the user side of the branch due to refraction and reflection. Based on the above reasons, the double-mode communication module repeatedly appearing in the second queue can be selected as the communication node of the communication branch in which the terminal module is located. Through the above manner, the influence of the reflection and refraction of the signal in the line can be effectively avoided, and the signal generated by the reflection phenomenon can be fully utilized for the identification of the same communication branch.

[0077] Before selecting a new end module each time, the fusion terminal removes the dual-mode communication modules of all known communication branches from the first queue to form a new first queue; the first queue is formed by sorting the dual-mode communication modules according to the first time stamp;

[0078] The fusion terminal selects the dual-mode communication module with the latest first time stamp in the new first queue as the new end module.

[0079] When the new end module is selected, the first queue generated in the above embodiment can be used for processing, that is, the dual-mode communication modules of the known communication branches are removed from the first queue, and the dual-mode communication module at the end of the first queue, that is, the dual-mode communication module with the latest first time stamp, is the end module corresponding to this calculation.

[0080] In a possible implementation, the judgment that all communication branches are screened out includes:

[0081] When the number of dual-mode communication modules in the first queue is 0, the fusion terminal judges that all communication branches have been screened out.

[0082] In a possible implementation, the fusion terminal constructs the power supply area power topology according to all the communication branches includes:

[0083] The fusion terminal connects the communication branches from the dual-mode communication module at the beginning to the dual-mode communication module at the end to form a communication link;

[0084] The dual-mode communication module at the beginning of all the communication links is connected to the fusion terminal to form the power supply area power topology.

[0085] When each communication branch is obtained, the communication branches can be connected internally in sequence to form a communication link, and the dual-mode communication module at the beginning of the communication link can be connected to the fusion terminal to form the topology structure of the completed power supply area power grid.

[0086] For example, refer to Figure 2 A complete topology network construction technical solution is given here, and the fusion terminal is configured in the power distribution station and connected to the three-phase line. Figure 2 Only the branch state of the A-phase line is shown in FIG. 1, the A-phase line has four branches, and the corresponding users are A1-A4, B1-B4, C1-C4, and D1-D4. The dual-mode communication modules corresponding to the users are also numbered as A1-A4, B1-B4, C1-C4, and D1-D4 by the above method.

[0087] Before starting detection, the fusion terminal is taken as a master node and the dual-mode communication module is taken as a sub-node to perform Lora communication networking; after networking, the fusion terminal sends a 00 signal on the A-phase backbone, at this time the dual-mode communication module responds to the signal and sends a timestamp to the fusion terminal through the Lora network, and forms a first queue: A1, B1, D1, D2, C1, B2, B3, C2, A2, B4, C3, D3, D4, C4, A3, A4; the queue is sorted from early to late according to the first timestamp; at this time, the terminal module with the latest timestamp is A4, A4 broadcasts a second networking signal, and at the same time sends a second timestamp, and the second timestamp sequence generated is A4; the second networking signal reaches the A3 corresponding branch and is refracted into the user side, and is received by the dual-mode communication module A3, at the same time, the second networking signal also reflects at the branch and is received by A4, and the second timestamp sequence generated is A3, A4; the second networking signal transmitted through the A3 corresponding branch reaches the A2 corresponding branch and is refracted into the user side, and is received by the dual-mode communication module A2, at the same time, the second networking signal also reflects at the branch and is received by A3 and A4 in turn, and the second timestamp sequence generated is A2, A3, A4; the second networking signal transmitted through the A2 corresponding branch reaches the A1 corresponding branch and is refracted into the user side, and is received by the dual-mode communication module A1, at the same time, the second networking signal also reflects at the branch and is received by A2, A3 and A4 in turn, and the second timestamp sequence generated is A1, A2, A3, A4. When the second networking signal is transmitted from this branch to the backbone, the second networking signal also occurs, and the transmission signal is received by A1, A2, A3 and A4 in turn, forming the sequence A1, A2, A3, A4; in the above process, due to the different distances between A1-A4, the second timestamp sequence corresponding to this branch is A4, A3, A2, A4, A3, A1, A4, A2, A3, A4, A1, A2, A3, A4.

[0088] Since the second group network signal is refracted and enters the branch after being transmitted to the main line, the second group network signal is refracted into the user side and detected by the corresponding dual-mode communication module to form a second time stamp, and finally forms a sequence C1, C2, D1, C3, D2, D3, C4, D4. Due to the distance, the second time stamp of the branch where A1-A4 is located will cross. At this time, the second queue formed by the second time stamp received by the fusion terminal will be A4, A3, A2, A4, A3, A1, A4, A2, A3, A4, C1, A1, C2, D1, C3, A2, D2, D3, A3, C4, A4, D4. At this time, the dual-mode communication module A1-A4 that appears repeatedly is taken as a communication node, and the first appearance of the second time stamp is sorted to form a communication branch A4-A3-A2-A1. Since the end module of A4 has been determined, the end of the communication branch is A4 and the beginning is A1.

[0089] A1-A2-A3-A4 is removed from the first queue to form a new first queue: B1, D1, D2, C1, B2, B3, C2, B4, C3, D3, D4, C4. At this time, B1 continues to perform the above operation to form a communication link B4-B3-B2-B1. In this way, the remaining communication links C4-C3-C2-C1 and D4-D3-D2-D1 are obtained. The end modules A1, B1, C1 and D1 of the beginning of these communication links are connected to the fusion terminal to form the final distribution area power grid topology network. Based on the same inventive concept, the embodiments of the application also provide a distribution area power topology identification system based on a fusion terminal and a dual-mode communication, which comprises:

[0090] The fusion terminal is arranged at the power distribution side;

[0091] The dual-mode communication module is arranged at the user side;

[0092] The fusion terminal is configured to:

[0093] Broadcast a first group network signal in the distribution area in the form of power carrier communication;

[0094] Receive the first time stamp of the moment when the first group network signal is received sent by the dual-mode communication module through wireless communication;

[0095] The fusion terminal screens out the end module according to the first time stamp; the end module is the dual-mode communication module with the latest first time stamp;

[0096] Controlling the terminal module to broadcast a second networking signal in a power carrier communication manner, and receiving a second timestamp sent by the dual-mode communication module in a wireless communication manner; the second timestamp is the moment when the dual-mode communication module receives or sends the second networking signal;

[0097] Filtering the communication branch corresponding to the terminal module according to the second timestamp;

[0098] Repeatedly select a new terminal module and send a second network signal to filter the communication branches until all communication branches are filtered out; when the new terminal module is a dual-mode communication module excluding the known communication branches, the dual-mode communication module with the latest first timestamp time;

[0099] The power topology of the substation area is constructed based on all the communication branches.

[0100] In a possible implementation, the converged terminal is further configured to:

[0101] Sort the dual-mode communication modules according to the second timestamp to form a second queue;

[0102] The communication branch corresponding to the terminal module is screened out according to the second queue.

[0103] In a possible implementation, the converged terminal is further configured to:

[0104] The dual-mode communication module that appears repeatedly in the second queue is used as a communication node of the communication branch where the terminal module is located;

[0105] All the communication nodes in the second queue are sorted in the order of their first appearance in the second queue to form the communication branch, and the end of the communication branch is the end module.

[0106] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of the two. In order to clearly illustrate the interchangeability of hardware and software, the above description has generally described the composition and steps of each example according to function. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0107] In several embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented by other manners. For example, the apparatus embodiments described above are merely illustrative, for example, the division of the units is merely a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can also be electrical, mechanical or other form of connection.

[0108] The units described as separate components can or can not be physically separated, and it is obvious to those skilled in the art that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware, computer software or a combination of both. In order to clearly illustrate the interchangeability of hardware and software, the components and steps of each example have been described in the above description in general terms. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. The skilled person can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0109] In addition, each functional unit in each embodiment of the present application can be integrated into one processing unit, or each unit can exist physically, or two or more units can be integrated into one unit. The integrated unit can be realized in the form of hardware or software functional unit.

[0110] The integrated unit, if realized in the form of software functional unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part of the prior art that contributes to the technical solutions, or the whole or part of the technical solutions can be embodied in the form of software product, which is stored in a storage medium and includes a plurality of instructions for making a computer device (which can be a personal computer, a server, or a grid device, etc.) execute all or part of the steps of the method described in each embodiment of the present application. The foregoing storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic disk or optical disk and various program code storage media.

[0111] The above detailed description of the specific embodiments of the present application has been given to understand the purpose, technical solutions and beneficial effects of the present application. It should be understood that the above description is only a specific embodiment of the present application and is not used to limit the protection scope of the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for identifying substation power topology based on fusion terminal and dual-mode communication, characterized in that: include: The fusion terminal configured on the power distribution side broadcasts the first network signal to the substation area in the form of power carrier communication; The dual-mode communication module configured on the user side sends a first timestamp of the moment when the first network signal is received to the converged terminal through wireless communication; The fusion terminal selects the terminal module according to the first timestamp; The terminal module is the dual-mode communication module with the latest first timestamp; The terminal module broadcasts the second networking signal in a power carrier communication manner, and the dual-mode communication module sends a second timestamp to the fusion terminal in a wireless communication manner; the second timestamp is the moment when the dual-mode communication module receives or sends the second networking signal; The fusion terminal selects a communication branch corresponding to the terminal module according to the second timestamp; The fusion terminal repeatedly selects a new terminal module and sends a second network signal to filter communication branches until all communication branches are filtered out; when the new terminal module is a dual-mode communication module excluding the known communication branches, the dual-mode communication module with the latest first timestamp time; The fusion terminal constructs the area power topology according to all the communication branches; The fusion terminal screening out the communication branch corresponding to the terminal module according to the second timestamp includes: The fusion terminal sorts the dual-mode communication modules according to the second timestamp to form a second queue; the fusion terminal filters out the communication corresponding to the terminal module according to the second queue; The fusion terminal screening out the communication branch corresponding to the terminal module according to the second queue includes: The fusion terminal uses the dual-mode communication module that appears repeatedly in the second queue as a communication node of the communication branch where the terminal module is located; The fusion terminal arranges all the communication nodes in the second queue in the order of their first appearance in the second queue to form the communication branch, and the end of the communication branch is the end module.

2. The method for identifying substation power topology based on integrated terminal and dual-mode communication according to claim 1, characterized in that: The fusion terminal screening out the terminal module according to the first timestamp includes: the fusion terminal sorting the dual-mode communication modules according to the first timestamp to form a first queue; The fusion terminal uses the dual-mode communication module with the latest first timestamp in the first queue as the terminal module.

3. The method for identifying substation power topology based on integrated terminal and dual-mode communication according to claim 1, characterized in that: Repeated selection of new end modules includes: Before selecting a new terminal module each time, the fusion terminal removes the dual-mode communication modules of all known communication branches from the first queue to form a new first queue; the first queue is formed by sorting the dual-mode communication modules according to the first timestamp; The fusion terminal uses the dual-mode communication module with the latest first timestamp in the new first queue as a new terminal module.

4. The method for identifying substation power topology based on integrated terminal and dual-mode communication according to claim 3, characterized in that: The judgment that all communication branches are screened out includes: When the number of dual-mode communication modules in the first queue is 0, the converged terminal determines that all communication branches have been screened out.

5. The method for identifying substation power topology based on integrated terminal and dual-mode communication according to claim 1, characterized in that: The fusion terminal constructs the power topology of the substation area according to all the communication branches, including: The fusion terminal sequentially connects the communication branches from the dual-mode communication module at the head end to the dual-mode communication module at the end end to form a communication link; The head ends of all the communication links are connected to the fusion terminal to form the power topology of the substation area.

6. The power topology identification system based on fusion terminal and dual-mode communication is characterized by: include: Fusion terminal configured on the distribution side; A dual-mode communication module configured on the user side; The converged terminal is configured as follows: Broadcasting the first network signal to the substation area in a manner of power line carrier communication; receiving a first timestamp of a moment when the first networking signal is received, sent by the dual-mode communication module via wireless communication; The fusion terminal selects the terminal module according to the first timestamp; The terminal module is the dual-mode communication module with the latest first timestamp; Controlling the terminal module to broadcast a second networking signal in a power carrier communication manner, and receiving a second timestamp sent by the dual-mode communication module in a wireless communication manner; The second timestamp is the time when the dual-mode communication module receives or sends the second networking signal; and the communication branch corresponding to the terminal module is selected according to the second timestamp; Repeatedly select a new terminal module and send a second network signal to filter the communication branches until all communication branches are filtered out; when the new terminal module is a dual-mode communication module excluding the known communication branches, the dual-mode communication module with the latest first timestamp time; Constructing a power topology of the substation area according to all the communication branches; The converged terminal is further configured to: Sort the dual-mode communication modules according to the second timestamp to form a second queue; Filtering the communication branch corresponding to the terminal module according to the second queue; The converged terminal is further configured to: The dual-mode communication module that appears repeatedly in the second queue is used as a communication node of the communication branch where the terminal module is located; All the communication nodes in the second queue are sorted in the order of their first appearance in the second queue to form the communication branch, and the end of the communication branch is the end module.

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