A time slot allocation method and system for identifying a transformer area and a customer

Abstract

The application provides a time slot allocation method and system for transformer area and household identification, and belongs to the technical field of low-voltage power distribution network household identification. The time slot allocation method comprises the following steps: each terminal selects a different serial number; adjacent terminals are allocated identification time slots according to the arrangement relationship of the serial numbers, so that adjacent terminals respectively perform household identification in different identification time slots. The application compresses idle identification time slots and improves the identification efficiency by configuring the identification time slots based on the terminal serial numbers. The application solves the problem of low household identification efficiency caused by too many idle time slots in the traditional method of allocating terminals in a fixed number of time slots.

Description

Technical Field

[0001] This invention belongs to the field of transformer identification technology in low-voltage distribution networks, specifically relating to a time slot allocation method and system for transformer identification in distribution areas. Background Technology

[0002] A low-voltage distribution area refers to the power supply range or region from the high-voltage side drop-out switch of a public transformer to the user's power supply area, defined by the drop-out switch terminal. This includes equipment such as transformers, low-voltage lines, terminals, and electricity meters. Typically, a low-voltage distribution area has one terminal installed at the transformer outlet and one electricity meter installed at the user's location. The terminal communicates with the electricity meter via low-voltage power line carrier communication. The transformer-to-customer identification characteristic current method involves the electricity meter transmitting a characteristic current at a specified time, and the terminal detecting whether it receives this characteristic current. If the terminal receives the characteristic current at the time the meter transmits its current, the meter belongs to this distribution area; if the terminal does not detect the characteristic current, it cannot determine the meter's distribution area affiliation. However, when adjacent distribution areas simultaneously perform transformer-to-customer identification using the characteristic current method, the identical characteristic currents emitted by the meters can lead to cross-region identification by the two terminals. Therefore, the rational allocation of identification time slots is a crucial problem that needs to be solved in the transformer-to-customer identification characteristic current method.

[0003] In existing identification time slot allocation methods, since the number of time slots used for identification is fixed, different areas may have different degrees of idle time slots due to the different number of terminals, which leads to relatively low efficiency in identifying change users. Summary of the Invention

[0004] In view of this, the present invention aims to solve the problem of low efficiency in the existing process of identifying change of household relationships in transformer substations.

[0005] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0006] In a first aspect, the present invention provides a time slot allocation method for transformer substation identification, comprising:

[0007] The terminal randomly selects a serial number, and the serial numbers selected by adjacent terminals are not repeated. Adjacent terminals are several terminals that can communicate locally with each other.

[0008] The terminal is assigned a corresponding identification time slot based on the arrangement relationship of the serial numbers between adjacent terminals, and several adjacent terminals sequentially perform user identification in their respective identification time slots.

[0009] Furthermore, the terminal allocates corresponding identification time slots based on the arrangement relationship of serial numbers between adjacent terminals, specifically including:

[0010] The terminal uses the local communication network to identify neighboring network information and generate a set of relationships between neighboring terminals.

[0011] Select other terminals with serial numbers smaller than this terminal's serial number from the adjacent terminal relationship set, and generate a terminal dependency relationship set;

[0012] Based on the principle that this terminal must start identification after all other terminals have completed identification, this terminal is allocated an identification time slot in the terminal dependency set.

[0013] Furthermore, several adjacent terminals sequentially perform user change identification within their respective corresponding identification time slots, specifically including:

[0014] The terminal periodically exchanges identification information with other terminals whose serial numbers are lower than its own. Once all other terminals with serial numbers lower than its own have completed identification, this terminal begins identification.

[0015] After the identification is completed, this terminal will send the identification completion information to all other neighboring terminals in the neighboring terminal relationship set whose serial numbers are greater than its own, so that the other neighboring terminals can identify the new user according to the identification principles of this terminal.

[0016] Furthermore, it also includes:

[0017] The terminal receives non-local energy meter information from all adjacent terminals in the adjacent terminal relationship set, analyzes the non-local energy meter information, and returns all energy meter information with the same current transmission time to the original adjacent terminal, so that the original adjacent terminal can randomly reassign the current transmission time of the returned energy meter within the original terminal identification time slot, and re-identify it in the next identification time slot of the original terminal.

[0018] Furthermore, it also includes:

[0019] Each terminal needs to be synchronized daily to ensure that the time of each terminal is consistent.

[0020] Secondly, the present invention provides a time slot allocation system for transformer substation identification, comprising:

[0021] The serial number selection unit is used to randomly assign a serial number to a terminal, and the serial numbers assigned to adjacent terminals are not repeated. The adjacent terminals are several terminals that can communicate locally with each other.

[0022] The time slot allocation unit is used to allocate corresponding identification time slots to terminals based on the arrangement relationship of serial numbers between adjacent terminals, and to enable several adjacent terminals to perform user identification in their respective corresponding identification time slots in sequence.

[0023] Furthermore, in the time slot allocation unit, the terminal allocates a corresponding identification time slot based on the arrangement relationship of sequence numbers between adjacent terminals, specifically including:

[0024] The terminal uses the local communication network to identify neighboring network information and generate a set of relationships between neighboring terminals.

[0025] Select other terminals with serial numbers smaller than this terminal's serial number from the adjacent terminal relationship set, and generate a terminal dependency relationship set;

[0026] Based on the principle that this terminal must start identification after all other terminals have completed identification, this terminal is allocated an identification time slot in the terminal dependency set.

[0027] Furthermore, in the time slot allocation unit, several adjacent terminals sequentially perform user change identification within their respective corresponding identification time slots, specifically including:

[0028] The terminal periodically exchanges identification information with other terminals whose serial numbers are lower than its own. Once all other terminals with serial numbers lower than its own have completed identification, this terminal begins identification.

[0029] After the identification is completed, this terminal will send the identification completion information to all other neighboring terminals in the neighboring terminal relationship set whose serial numbers are greater than its own, so that the other neighboring terminals can identify the new user according to the identification principles of this terminal.

[0030] Furthermore, it also includes:

[0031] The current transmission time adjustment unit is used to analyze the non-local energy meter information of all adjacent terminals in the adjacent terminal relationship set after the terminal receives the non-local energy meter information and return the energy meter information with the same current transmission time to the original adjacent terminal, so that the original adjacent terminal can randomly reassign the current transmission time of the returned energy meter in the original terminal identification time slot, and re-identify it in the next identification time slot of the original terminal.

[0032] Furthermore, it also includes:

[0033] The time synchronization unit is used to synchronize the time of each terminal every day so that the time of each terminal is consistent.

[0034] In summary, this invention provides a time slot allocation method and system for substation change identification, including each terminal selecting a different serial number, and allocating identification time slots between adjacent terminals according to the arrangement of the serial numbers, thereby enabling adjacent terminals to perform change identification in different identification time slots. This invention improves identification efficiency by compressing idle identification time slots through a method of configuring identification time slots based on terminal serial numbers. It solves the problem of low change identification efficiency caused by excessive idle time slots when terminals are allocated to a fixed number of time slots in traditional methods. Attached Figure Description

[0035] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A flowchart illustrating a time slot allocation method for transformer substation identification provided in an embodiment of the present invention;

[0037] Figure 2 A schematic diagram illustrating the process of neighboring terminals identifying change users according to an embodiment of the present invention;

[0038] Figure 3 This is a schematic diagram of the identification of the serial station area of ​​the electricity meter provided in an embodiment of the present invention;

[0039] Figure 4 This is a schematic diagram of a terminal in the first power distribution room provided in an embodiment of the present invention;

[0040] Figure 5 This is a schematic diagram of the first adjacent terminal provided in an embodiment of the present invention;

[0041] Figure 6 This is a schematic diagram of the second adjacent terminal provided in an embodiment of the present invention;

[0042] Figure 7 This is a schematic diagram of the third adjacent terminal provided in an embodiment of the present invention. Detailed Implementation

[0043] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0044] A low-voltage distribution area refers to the power supply range or region from the high-voltage side drop-out switch of a public transformer to the user's outlet, using the drop-out switch as the boundary point. This includes equipment such as transformers, low-voltage lines, terminals, and electricity meters. Typically, a low-voltage distribution area has one terminal installed at the transformer outlet and one electricity meter installed at the user's location. The terminal communicates with the electricity meter via low-voltage power line carrier communication. The transformer-user identification characteristic current method involves the electricity meter transmitting a characteristic current at a specified time, and the terminal detecting whether it receives this characteristic current. If the terminal receives the characteristic current at the time the meter transmits its current, the meter belongs to this distribution area; if the terminal does not detect the characteristic current, the distribution area affiliation of the electricity meter cannot be determined.

[0045] When adjacent transformer substations are simultaneously identified using the characteristic current method, cross-substation identification may occur. For example... Figure 3 As shown, electricity meters 1, 2, and 3 physically belong to transformer area A, while electricity meters 4, 5, and 6 physically belong to transformer area B. However, terminal A's meter file includes electricity meters 1, 2, and 4, while terminal B's meter file includes electricity meters 3, 5, and 6. If terminal A and terminal B simultaneously activate transformer identification, and electricity meters 3 and 4 send characteristic currents at the same time, since the characteristic currents sent by electricity meters 3 and 4 are indistinguishable, terminal A receives the characteristic current sent by electricity meter 3 and mistakenly interprets it as the characteristic current sent by electricity meter 4, thus incorrectly identifying electricity meter 4 as transformer area A. Similarly, terminal B incorrectly identifies electricity meter 3 as transformer area B. The reasonable allocation of identification time slots becomes a problem that urgently needs to be solved by the characteristic current method for transformer identification.

[0046] In existing technology, each terminal establishes a carrier communication network. To distinguish different terminals' carrier communication networks, each carrier communication network randomly selects a SNID. Simultaneously, to ensure that SNIDs from adjacent transformer areas do not conflict, adjacent carrier communication networks negotiate to avoid SNID duplication. The terminal uses its local communication network to identify neighboring network information. The terminal sends neighbor detection information to all neighboring network terminals via power line carrier. The terminal records the logical address and SNID of the terminal responding to the neighbor detection information, forming a list of neighboring terminals. The master station configures a fixed identification duration T for each SNID. Assuming T0 is the start time of identification, the identification time slot T is determined when SNID = i (where 1 ≤ i ≤ 15). i = [T0 + (i-1) × T, T0 + i × T], as shown in Table 1. Since the SNIDs of adjacent carrier communication networks do not conflict, the identification time slots of adjacent terminals do not overlap, ensuring that cross-platform identification does not occur during the subscriber identification process. For example... Figure 4As shown, power distribution room 1 contains four terminals: A, B, C, and D. These four terminals can receive neighbor network detection information from each other, and are considered adjacent terminals. The terminal SNID information is shown in Table 2: Terminal A's SNID is 01, Terminal B's SNID is 05, Terminal C's SNID is 08, and Terminal D's SNID is 02. The terminal identification time slot arrangement is shown in Table 3: Terminal A's identification time slot T1 = [T0, T0+T], Terminal B's identification time slot T5 = [T0+4T, T0+5T], Terminal C's identification time slot T8 = [T0+7T, T0+8T], and Terminal D's identification time slot T2 = [T0+T, T0+2T].

[0047] Table 1 Examples of identification time slots corresponding to SNID

[0048] SNID Identify time slots 01 <![CDATA[T1=[T0,T0+T]]]> 02 <![CDATA[T2=[T0+T,T0+2T]]]> ...... ...... 15 <![CDATA[T 15 =[T0+14T,T0+15T]]]>

[0049] Table 2 Examples of Terminal SNIDs

[0050]

[0051]

[0052] Table 3 Example of Terminal Identification Time Slot Allocation

[0053] SNID Identify time slots terminal 01 <![CDATA[T1=[T0,T0+T]]]> Terminal A 02 <![CDATA[T2=[T0+T,T0+2T]]]> Terminal D 03 <![CDATA[T3=[T0+2T,T0+3T]]]> none 04 <![CDATA[T4=[T0+3T,T0+4T]]]> none 05 <![CDATA[T5=[T0+4T,T0+5T]]]> Terminal B 06 <![CDATA[T6=[T0+5T,T0+6T]]]> none 07 <![CDATA[T7=[T0+6T,T0+7T]]]> none 08 <![CDATA[T8=[T0+7T,T0+8T]]]> Terminal C ...... ...... none 15 <![CDATA[T 15 =[T0+14T,T0+15T]]]> none

[0054] Within the identification time slot, the terminal configures the current transmission times of the electricity meters according to a certain sequence. Each electricity meter transmits a characteristic current at the designated time, and the terminal detects whether it receives the characteristic current. If the terminal receives the characteristic current at a given electricity meter's current transmission time, the electricity meter belongs to this transformer substation; if the terminal does not detect the characteristic current, it cannot determine the transformer substation affiliation of the electricity meter. Through the above method, a transformer substation identification list is created for the electricity meters belonging to this transformer substation. After the terminal identification process is completed, the master station reads the transformer substation identification results from the terminal to obtain the transformer substation relationships for the transformer substation.

[0055] However, the aforementioned existing technologies suffer from low efficiency in changing user identification. Specifically, the number of time slots for changing user identification is fixed at 15 based on the SNID value range. When the number of terminals requiring changing user identification, n, is less than 15, some identification time slots have no corresponding terminals and remain idle. The fewer the number of terminals requiring changing user identification, n, the more idle identification time slots there are, and the longer the idle time (15-n)T, the lower the identification efficiency. As shown in Table 4, assuming that the number of terminals requiring changing user identification in Example 1 is 3, the idle identification time slots are {T3, T4, T5, T6, T7, ..., T...}. 14The idle time slot is 12T. As shown in Table 5, assuming that the number of terminals requiring user identification in Example 2 is 6, then the idle identification time slots are {T5, T6, T9, ..., T}. 14 The idle time is 9T. Example 1 has 3T more idle recognition slots than Example 2, with {T3, T4, T7} more idle time, resulting in lower recognition efficiency.

[0056] Table 4. Example of Terminal Identification Time Slot in Example 1

[0057] SNID Identify time slots terminal 01 <![CDATA[T1=[T0,T0+T]]]> Terminal B 02 <![CDATA[T2=[T0+T,T0+2T]]]> Terminal A 03 <![CDATA[T3=[T0+2T,T0+3T]]]> none 04 <![CDATA[T4=[T0+3T,T0+4T]]]> none 05 <![CDATA[T5=[T0+4T,T0+5T]]]> none 06 <![CDATA[T6=[T0+5T,T0+6T]]]> none 07 <![CDATA[T7=[T0+6T,T0+7T]]]> none 08 <![CDATA[T8=[T0+7T,T0+8T]]]> none ...... ...... none 14 <![CDATA[T 14 =[T0+13T,T0+14T]]]> none 15 <![CDATA[T 15 =[T0+14T,T0+15T]]]> Terminal C

[0058] Table 5 Example 2: Terminal Identification Time Slot Examples

[0059]

[0060]

[0061] Based on this, the present invention addresses the problem of low efficiency in identifying change of subscriber relationships in the transformer substation area by proposing a time slot allocation method and system for identifying change of subscriber relationships in the transformer substation area.

[0062] The following is a detailed description of an embodiment of a time slot allocation method for transformer substation identification provided by the present invention.

[0063] Please see Figure 1 This embodiment provides a time slot allocation method for transformer substation identification, including:

[0064] S100: The terminal randomly selects a serial number, and the serial numbers selected by adjacent terminals are not repeated. The adjacent terminals are several terminals that can communicate locally with each other.

[0065] S200: The terminal is assigned a corresponding identification time slot based on the arrangement relationship of the serial numbers between adjacent terminals, and several adjacent terminals sequentially perform user identification in their respective identification time slots.

[0066] This embodiment provides a time slot allocation method and system for substation change identification, including each terminal selecting a different serial number, and adjacent terminals being allocated identification time slots according to the arrangement of the serial numbers, so that adjacent terminals can perform change identification in different identification time slots. This invention improves identification efficiency by compressing idle identification time slots through a method of configuring identification time slots based on terminal serial numbers.

[0067] In an optional embodiment, the terminal allocates a corresponding identification time slot based on the sequence number arrangement relationship between adjacent terminals, specifically including:

[0068] S201: The terminal uses the local communication network to identify neighboring network information and generate a set of relationships between neighboring terminals.

[0069] The main station synchronizes the time of each terminal daily to ensure time consistency. Each terminal establishes a carrier communication network. To distinguish different terminal carrier communication networks, each carrier communication network randomly selects a SNID. Simultaneously, to ensure that SNIDs from adjacent transformer areas do not conflict, adjacent carrier communication networks negotiate to avoid SNID duplication. Terminals utilize their local communication network to identify neighboring network information. Terminals send neighbor detection information, their logical address, and SNID to all neighboring terminals via power line carrier. Terminals record the logical address and SNID of terminals responding to the neighbor detection information, forming a list of neighboring terminals. For example... Figure 3 As shown, there are six terminals in the power supply area: A, B, C, D, E, and F. Terminals A, B, and C can communicate locally; terminals D, E, and F can communicate locally; and terminals C and D can communicate locally. Examples of adjacent terminals are shown in Table 6. Figure 5 As shown, the SNID of terminal A is 01, the SNID of terminal B is 05, the SNID of terminal C is 08, the SNID of terminal D is 02, the SNID of terminal E is 11, and the SNID of terminal F is 01. The list of neighboring terminals of terminal C is shown in Table 7, and the list of neighboring terminals of terminal D is shown in Table 8.

[0070] Table 6 Example of Adjacent Terminal List

[0071]

[0072] Table 7 Example of a list of neighboring terminal SNID information for terminal C

[0073]

[0074] Table 8 Example of SNID information list for terminal D's neighboring terminals

[0075]

[0076] S202: Select other terminals with serial numbers smaller than this terminal's serial number from the set of adjacent terminal relationships, and generate a set of terminal dependency relationships.

[0077] S203: In the terminal dependency set, based on the principle that this terminal must start identification after all other terminals have completed identification, this terminal is allocated an identification time slot.

[0078] Terminal Z (whose SNID = z) sorts the terminals in the neighboring terminal SNID information list in ascending order of SNID, and selects the terminal with a SNID smaller than z. m1 ,X m2 ,……,X mnLet z be the set of adjacent terminals with SNID = m (where 1 ≤ m < z ≤ 15), and this set has n terminals. Terminal Z must wait for all terminals X with SNID smaller than z. mn Once recognition is complete, the recognition process begins, as shown in Table 9.

[0079] Table 9 Example of Terminal Z Dependency Information List

[0080]

[0081] like Figure 6 As shown, there are six terminals in the power supply area: A, B, C, D, E, and F. Terminals A, B, and C can communicate locally; terminals D, E, and F can communicate locally; and terminals C and D can communicate locally. Terminal A's SNID is 05, terminal B's SNID is 01, terminal C's SNID is 08, terminal D's SNID is 07, terminal E's SNID is 09, and terminal F's SNID is 15. The dependency information list for terminal C is shown in Table 10; terminal C can only begin identification after terminals B, A, and D have completed identification. The dependency information list for terminal E is shown in Table 11; terminal E can only begin identification after terminal D has completed identification.

[0082] Table 10 Example of Terminal C Dependency Information List

[0083]

[0084] Table 11 Example of Terminal E Dependency Information List

[0085] Terminal Name SNID This terminal E 09 Adjacent terminals D 07

[0086] like Figure 7 As shown, there are six terminals in the power supply area: A, B, C, D, E, and F. Terminals A, B, and C can communicate locally; terminals D, E, and F can communicate locally; and terminals C and D can communicate locally. Terminal A's SNID is 05, terminal B's SNID is 01, terminal C's SNID is 08, terminal D's SNID is 01, terminal E's SNID is 05, and terminal F's SNID is 08. The dependency information list for terminal C is shown in Table 12; terminal C can only begin identification after terminals B, D, and A have completed their identification processes. The dependency information list for terminal E is shown in Table 13; terminal E can only begin identification after terminal D has completed its identification processes.

[0087] Table 12 Example of Terminal C Dependency Information List

[0088]

[0089] Table 13 Example of Terminal E Dependency Information List

[0090] Terminal Name SNID This terminal E 05 Adjacent terminals D 01

[0091] In an optional embodiment, several adjacent terminals sequentially perform user change identification within their respective corresponding identification time slots, specifically including:

[0092] S203: The terminal periodically exchanges identification information with other terminals whose serial numbers are less than its own. After all other terminals with serial numbers less than its own have completed identification, this terminal begins identification.

[0093] S204: After the identification is completed, this terminal will send the identification completion information to all other adjacent terminals in the adjacent terminal relationship set whose serial numbers are greater than this terminal's serial number, so that the other adjacent terminals can identify the change of user according to this terminal's identification principle.

[0094] As shown in Table 14, in the list of SNID information of neighboring terminals Z (whose SNID = z), {X x1 ,X x2 ,……,X xn {Y} is the set of neighboring terminals with SNID = x (where 1 ≤ x < z ≤ 15), and this set has n terminals; y1 ,Y y2 ,……,Y yp Let z be the set of neighboring terminals with SNID = y (where 1 ≤ z < y ≤ 15), and this set has p terminals. Before terminal Z begins identification, it periodically interacts with terminals X whose SNID is smaller than z. xn To exchange identification information, when all adjacent terminals X xn After all terminals have completed identification, terminal Z begins its own identification process. Once terminal Z has completed its identification, it sends the identification completion message to all neighboring terminals Y with SNIDs greater than z. yp ,like Figure 2 As shown.

[0095] Table 14 Example of SNID information list for neighboring terminals Z

[0096]

[0097] In addition, to prevent incorrect identification of cross-stations, the time slot allocation method provided in this embodiment also includes adjusting the current transmission time of the electricity meter.

[0098] Specifically, at the moment a certain electricity meter transmits its current, if the terminal receives a characteristic current, the electricity meter belongs to this distribution area, and the terminal adds the electricity meter to the electricity meter list for this distribution area. If the terminal does not detect the characteristic current, it cannot determine the distribution area affiliation of the electricity meter, and the terminal adds the electricity meter to the list of electricity meters outside this distribution area. The terminal then sends the list of electricity meters outside this distribution area to all neighboring terminals. After the terminal receives the lists of electricity meters outside this distribution area from all neighboring terminals, it compares the transmission times of the characteristic currents of the electricity meters in the lists. If different electricity meters have the same current transmission time, then those electricity meters may have been misidentified. The terminal returns the list of those electricity meters to the original neighboring terminals, and the original terminals randomly reassign the current transmission times of those electricity meters within their original identification time slot, and re-identify them in the next identification time slot.

[0099] like Figure 7 As shown in Table 15, there are six terminals in the power supply area: A, B, C, D, E, and F. Terminals A, B, and C can communicate locally; terminals D, E, and F can communicate locally; and terminals C and D can communicate locally. When terminal C compares the lists of non-local electricity meters of terminals B and D, as shown in Table 15, the comparison reveals that the current transmission time T of electricity meter Di in area D is... Di The current transmission time T of the electricity meter Bj in transformer area B Bj If the current meters are the same, terminal C returns the list of these electricity meters to terminals D and B, as shown in Table 16. Terminal D then randomly reassigns the current transmission time for these electricity meters within its own identification time slot. The current transmission time T for electricity meter Di is... Di +n, where n is a random number; Terminal B re-randomly allocates the current transmission time of this part of the energy meters within the time slot of its own identification, and the current transmission time T of energy meter Bj is... Bj +m, where m is a random number, as shown in Table 17. Re-identification occurs in the next identification time slot of the terminal. After the terminal completes the change of subscriber identification, the main station reads the change of subscriber identification result from the terminal to obtain the change of subscriber relationship of the transformer area.

[0100] Table 15 Example of a list of non-local electricity meters received by Terminal C from Terminals D and B.

[0101]

[0102] Table 16 Example of a list of energy meters with the same current transmission time.

[0103]

[0104] Table 17 Example of a power meter list at the time of current transmission during terminal reconfiguration

[0105]

[0106] The following is an implementation example. Generate a list of neighboring terminal SNID information. For example... Figure 7 As shown, there are six terminals in the power supply area: A, B, C, D, E, and F. Terminals A, B, and C can communicate locally; terminals D, E, and F can communicate locally; and terminals C and D can communicate locally. The SNID of terminal A is 05, the SNID of terminal B is 01, the SNID of terminal C is 08, the SNID of terminal D is 01, the SNID of terminal E is 05, and the SNID of terminal F is 08. The list of SNID information of adjacent terminals of terminal C is shown in Table 18, and the list of SNID information of adjacent terminals of terminal D is shown in Table 19.

[0107] Table 18 Example of SNID information list for neighboring terminals of terminal C

[0108]

[0109] Table 19 Example of SNID information list for terminal E's neighboring terminals

[0110]

[0111] A terminal dependency information list is generated. Terminal C (SNID = 08) sorts the terminals in the adjacent terminal SNID information list in ascending order of SNID, and selects the terminals with SNIDs smaller than 08. The terminal C dependency information list is shown in Table 20. Terminal C can only begin identification after terminals B, D, and A have completed identification. Terminal E (SNID = 05) sorts the terminals in the adjacent terminal SNID information list in ascending order of SNID, and selects the terminals with SNIDs smaller than 05. The terminal E dependency information list is shown in Table 21. Terminal E can only begin identification after terminal D has completed identification.

[0112] Table 20 Example of Terminal C Dependency Information List

[0113]

[0114] Table 21 Example of Terminal E Dependency Information List

[0115] Terminal Name SNID This terminal E 05 Adjacent terminals D 01

[0116] Neighboring terminal identification information exchange mechanism. Before terminal C begins identification, it periodically exchanges identification information with terminals B, D, and A, whose SNIDs are smaller than 08. Terminal C begins identification only after terminals B, D, and A have all completed identification. Before terminal E begins identification, it periodically exchanges identification information with terminal D, whose SNID is smaller than 05. Terminal E begins identification only after terminal D has completed identification. After terminal E completes identification, it sends identification completion information to terminal F.

[0117] Adjust the current transmission time of the electricity meters. After terminal C receives the list of electricity meters not belonging to its local area from terminals B, D, and A, it compares the transmission times of the characteristic currents of the electricity meters in the list. The comparison reveals that the current transmission time T3 of electricity meter 3 in area D is the same as the current transmission time T5 of electricity meter 5 in area B, as shown in Table 22. Therefore, terminal C returns the list of electricity meters 3 to terminal D and the list of electricity meters 5 to terminal B. Terminal D randomly reassigns the current transmission time of electricity meter 3 within its own identification time slot: T3+n, where n is a random number. Terminal B randomly reassigns the current transmission time of electricity meter 5 within its own identification time slot: T5+m, where m is a random number, as shown in Table 23. Re-identification occurs in the next identification time slot for terminals B and D. When terminal E receives the list of non-local electricity meters from terminals D and F, it compares the transmission times of the characteristic currents of the electricity meters in the list and finds no electricity meters with the same current transmission time. After the terminal completes the transformer identification, the master station reads the transformer identification results from the terminal to obtain the transformer relationship of the area.

[0118] Table 22 Example of a list of non-local electricity meters received by terminal C from terminals D and B.

[0119]

[0120] Table 23 Example of energy meter list at the time of current transmission during terminal reconfiguration

[0121]

[0122] This embodiment provides a time slot allocation method for transformer substation identification. Through a dynamic time slot adjustment mechanism, it shortens the identification time and improves the efficiency of transformer substation identification within the power supply area. Furthermore, it configures the identification time slots according to SNID to ensure that the identification time slots of the terminal and adjacent terminals do not overlap. In addition, this allocation method also provides a fault-tolerant identification mechanism to improve identification accuracy. When the terminal receives a list of non-local energy meters from all adjacent terminals, it compares the transmission times of the characteristic currents of the energy meters in the list. If different energy meters have the same current transmission time, those energy meters may be misidentified. The terminal returns this list of energy meters to the original adjacent terminals, and the original terminals randomly reassign the current transmission times of those energy meters within their original identification time slots, re-identifying them in the next identification time slot.

[0123] The above is a detailed description of an embodiment of a time slot allocation method for substation identification according to the present invention. The following will provide a detailed description of an embodiment of a time slot allocation system for substation identification according to the present invention.

[0124] This embodiment provides a time slot allocation system for transformer substation identification, including: a sequence number selection unit and a time slot allocation unit.

[0125] In this embodiment, the serial number selection unit is used to randomly assign a serial number to the terminal and the serial numbers assigned to adjacent terminals are not repeated. The adjacent terminals are several terminals that can communicate locally with each other.

[0126] In this embodiment, the time slot allocation unit is used to allocate corresponding identification time slots to terminals based on the arrangement relationship of serial numbers between adjacent terminals, and to enable several adjacent terminals to perform user identification in their respective corresponding identification time slots in sequence.

[0127] Specifically, the terminal allocates corresponding identification time slots based on the arrangement relationship of serial numbers between adjacent terminals, including:

[0128] The terminal uses the local communication network to identify neighboring network information and generate a set of relationships between neighboring terminals.

[0129] Select other terminals with serial numbers smaller than this terminal's serial number from the adjacent terminal relationship set, and generate a terminal dependency relationship set;

[0130] Based on the principle that this terminal must start identification after all other terminals have completed identification, this terminal is allocated an identification time slot in the terminal dependency set.

[0131] Several adjacent terminals sequentially perform user change identification within their respective identification time slots, specifically including:

[0132] The terminal periodically exchanges identification information with other terminals whose serial numbers are lower than its own. Once all other terminals with serial numbers lower than its own have completed identification, this terminal begins identification.

[0133] After the identification is completed, this terminal will send the identification completion information to all other neighboring terminals in the neighboring terminal relationship set whose serial numbers are greater than its own, so that the other neighboring terminals can identify the new user according to the identification principles of this terminal.

[0134] In addition, the distribution system provided in this embodiment also includes a current transmission timing adjustment unit.

[0135] The current transmission time adjustment unit is used to analyze the non-local energy meter information of all adjacent terminals in the adjacent terminal relationship set after the terminal receives the non-local energy meter information and returns all energy meter information with the same current transmission time to the original adjacent terminal, so that the original adjacent terminal can randomly reassign the current transmission time of the returned energy meter in the original terminal identification time slot, and re-identify it in the next identification time slot of the original terminal.

[0136] In addition, it also includes:

[0137] The time synchronization unit is used to synchronize the time of each terminal every day so that the time of each terminal is consistent.

[0138] The time slot allocation system provided in this embodiment is used to implement the time slot allocation method provided in the aforementioned embodiment. The specific settings of each unit are based on the complete implementation of the method, and will not be described in detail here.

[0139] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A time slot allocation method for transformer substation identification, characterized in that, include: The terminal randomly selects a serial number, and the serial numbers selected by adjacent terminals are not repeated. The adjacent terminals are several terminals that can communicate locally with each other. The terminal is assigned a corresponding identification time slot based on the arrangement relationship of the serial numbers between adjacent terminals, and the adjacent terminals sequentially perform user identification in their respective corresponding identification time slots. The terminal allocates corresponding identification time slots based on the sequence number arrangement relationship between adjacent terminals, specifically including: The terminal uses the local communication network to identify neighboring network information and generate a set of relationships between neighboring terminals. From the set of adjacent terminal relationships, other terminals with serial numbers smaller than the current terminal's serial number are selected to generate a set of terminal dependency relationships; Based on the principle that this terminal needs to start identification after all other terminals have completed identification, this terminal is allocated an identification time slot in the terminal dependency set.

2. The time slot allocation method for transformer substation identification according to claim 1, characterized in that, The adjacent terminals sequentially perform user change identification within their respective corresponding identification time slots, specifically including: The terminal periodically exchanges identification information with other terminals whose serial numbers are less than its own. Once all other terminals with serial numbers less than its own have completed identification, the terminal begins identification. After the identification is completed, this terminal will send the identification completion information to all other adjacent terminals in the adjacent terminal relationship set whose serial numbers are greater than its own, so that the other adjacent terminals can identify the new user according to the identification principles of this terminal.

3. The time slot allocation method for transformer substation identification according to claim 1, characterized in that, Also includes: The terminal receives non-local area energy meter information from all adjacent terminals in the adjacent terminal relationship set, analyzes the non-local area energy meter information, and returns all energy meter information with the same current transmission time to the original adjacent terminal, so that the original adjacent terminal can randomly reassign the current transmission time of the returned energy meter within the original terminal identification time slot, and re-identify it in the next identification time slot of the original terminal.

4. The time slot allocation method for transformer substation identification according to claim 3, characterized in that, Also includes: Each terminal needs to be synchronized daily to ensure that the time of each terminal is consistent.

5. A time slot allocation system for transformer substation identification, characterized in that, include: The serial number selection unit is used to randomly assign a serial number to a terminal, and the serial numbers assigned to adjacent terminals are not repeated. The adjacent terminals are several terminals that can communicate locally with each other. The time slot allocation unit is used to allocate corresponding identification time slots to terminals based on the arrangement relationship of serial numbers between adjacent terminals, and to enable the adjacent terminals to perform user identification in their respective corresponding identification time slots in sequence. In the time slot allocation unit, the terminal obtains a corresponding identification time slot based on the arrangement relationship of serial numbers between adjacent terminals, specifically including: The terminal uses the local communication network to identify neighboring network information and generate a set of relationships between neighboring terminals. From the set of adjacent terminal relationships, other terminals with serial numbers smaller than the current terminal's serial number are selected to generate a set of terminal dependency relationships; Based on the principle that this terminal needs to start identification after all other terminals have completed identification, this terminal is allocated an identification time slot in the terminal dependency set.

6. The time slot allocation system for transformer substation identification according to claim 5, characterized in that, In the time slot allocation unit, adjacent terminals sequentially perform user change identification within their respective corresponding identification time slots, specifically including: The terminal periodically exchanges identification information with other terminals whose serial numbers are less than its own. Once all other terminals with serial numbers less than its own have completed identification, the terminal begins identification. After the identification is completed, this terminal will send the identification completion information to all other adjacent terminals in the adjacent terminal relationship set whose serial numbers are greater than its own, so that the other adjacent terminals can identify the new user according to the identification principles of this terminal.

7. The time slot allocation system for transformer substation identification according to claim 5, characterized in that, Also includes: The current transmission time adjustment unit is used to analyze the non-local energy meter information of all adjacent terminals in the adjacent terminal relationship set after the terminal receives the non-local energy meter information of all adjacent terminals and return the energy meter information with the same current transmission time to the original adjacent terminal, so that the original adjacent terminal can randomly reassign the current transmission time of the returned energy meter in the original terminal identification time slot, and re-identify it in the next identification time slot of the original terminal.

8. The time slot allocation system for transformer substation identification according to claim 7, characterized in that, Also includes: The time synchronization unit is used to synchronize the time of each terminal every day so that the time of each terminal is consistent.

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