A method for determining area topology and an area topology system

Abstract

The present application provides a substation topology determination method and substation topology system, which relate to the field of power grid technology. The substation topology determination method is applied to the main station of the substation topology system, and the substation topology system also includes a multi-way topology loop, each of which includes a filter, a concentrator and a plurality of power terminals. The filter is electrically connected to the main station and the concentrator respectively, and the concentrator is also electrically connected to the plurality of power terminals. First, the filter is controlled to be disconnected so that the plurality of power terminals send their own address information to the concentrator connected thereto; then the filter is controlled to be unidirectionally conducted to receive the address packet sent by the concentrator, and the substation topology is determined based on the address packet, wherein the address packet includes the address of the concentrator itself and the addresses of the plurality of power terminals. The substation topology determination method and substation topology system provided by the present application have the advantage of being able to quickly determine the substation topology.

Description

Technical Field

[0001] The present application relates to the field of power grid technology, and in particular to a method for determining a substation topology and a substation topology system. Background Art

[0002] Currently, substation identification technology has matured, but substation identification alone cannot fully meet maintenance needs, and line problems cannot be located immediately.

[0003] For example, in some large-scale substation topology systems, there are multiple concentrators. Each concentrator is connected to multiple power terminals, resulting in relatively complex lines. During daily maintenance, staff cannot quickly locate the substation topology relationship, making it difficult to locate line problems.

[0004] In summary, the existing technology has the disadvantage that it is difficult to locate line problems in the substation topology system. Summary of the Invention

[0005] The purpose of the present application is to provide a method for determining a substation topology and a substation topology system, so as to improve the disadvantage in the prior art that line problems in the substation topology system are difficult to locate.

[0006] In order to achieve the above objectives, the technical solutions adopted in the embodiments of the present application are as follows:

[0007] On the one hand, an embodiment of the present application provides a method for determining a substation topology, the method being applied to a master station of a substation topology system, the substation topology system further comprising a multi-path topology loop, each of the topology loops comprising a filter, a concentrator, and a plurality of power terminals, the filter being electrically connected to the master station and the concentrator, respectively, and the concentrator being further electrically connected to the plurality of power terminals; the method comprising:

[0008] controlling the filter to be disconnected so that the plurality of power terminals send their own address information to the concentrator connected thereto;

[0009] The filter is controlled to be unidirectional to receive the address packet sent by the concentrator, and the substation topology is determined according to the address packet, wherein the address packet includes the address of the concentrator itself and the addresses of the multiple power terminals.

[0010] Optionally, the step of controlling the filter to disconnect comprises:

[0011] A control instruction is broadcast to make the filter non-conductive in both directions.

[0012] Optionally, the step of controlling the filter to disconnect comprises:

[0013] A control instruction is broadcasted, and the designated characteristic code of the filter is controlled to be data other than all concentrator addresses; wherein the designated characteristic code is a signal identifier that can pass through the filter.

[0014] Optionally, the step of controlling the filter to disconnect comprises:

[0015] Controls at most one filter to conduct in both directions and controls the remaining filters to be turned off.

[0016] Optionally, the step of controlling the filter to be unidirectional includes:

[0017] A control instruction is broadcasted to control the filter to be unidirectional, and the designated characteristic code of the filter is the address of the concentrator connected thereto; wherein the designated characteristic code is a signal identifier that can pass through the filter.

[0018] Optionally, the step of controlling the filter to disconnect comprises:

[0019] Broadcasting a first control instruction to turn off the filter and control the power terminal to send its own address to the concentrator connected thereto after T1 time;

[0020] After the step of controlling the filter to be disconnected, the method further comprises:

[0021] After time T0, a second control instruction is broadcasted to turn off the filter and the concentrator stores the received address.

[0022] Optionally, the step of controlling the filter to be unidirectional includes:

[0023] After time T0, a third control instruction is broadcasted to control the filter to be unidirectional and the concentrator sends an address packet after time T2.

[0024] On the other hand, an embodiment of the present application further provides a substation topology system, the substation topology system includes a master station and a multi-way topology loop, each of the topology loops includes a filter, a concentrator, and a plurality of power terminals, the filter is electrically connected to the master station and the concentrator, respectively, and the concentrator is also electrically connected to the plurality of power terminals; wherein,

[0025] When the master station controls the filter to be disconnected, the plurality of power terminals are used to send their own address information to the concentrator;

[0026] When the master station controls the filter to be unidirectional, the concentrator is used to send an address packet to the master station, wherein the address packet includes the address of the concentrator itself and the addresses of the multiple power terminals.

[0027] The master station is used to determine the area topology according to the address packet.

[0028] Optionally, the master station is further configured to control a designated feature code of the filter, wherein the designated feature code is a signal identifier capable of passing through the filter.

[0029] Optionally, each of the filters includes an address, and the master station is further configured to control the on / off state of the filter according to the address of the filter in each topology loop.

[0030] Compared with the prior art, this application has the following beneficial effects:

[0031] The present application provides a method for determining a substation topology and a substation topology system. The method for determining a substation topology is applied to the main station of the substation topology system. The substation topology system also includes a multi-way topology loop, each of which includes a filter, a concentrator, and a plurality of power terminals. The filter is electrically connected to the main station and the concentrator respectively, and the concentrator is also electrically connected to the plurality of power terminals. First, the filter is controlled to be disconnected so that the plurality of power terminals send their own address information to the concentrator connected thereto; then the filter is controlled to be unidirectionally conducted to receive the address packet sent by the concentrator, and the substation topology is determined based on the address packet, wherein the address packet includes the concentrator's own address and the addresses of the plurality of power terminals. Since the present application adds a filter and the main station can control the conduction direction of the filter, directional filtering is achieved, ensuring that each concentrator will only send the address of the power terminal connected thereto to the main station, and there will be no signal crosstalk, so that the main station can quickly determine the substation topology, and thus the staff can quickly locate the line problem.

[0032] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without creative work.

[0034] Figure 1 This is a module diagram of the platform topology system in the existing technology.

[0035] Figure 2 A schematic diagram of the modules of the substation topology system provided in an embodiment of the present application.

[0036] Figure 3This is an exemplary flowchart of the method for determining the substation topology provided in an embodiment of the present application.

[0037] In the figure: 100 - substation topology system; 110 - master station; 120 - topology loop; 121 - filter; 122 - concentrator. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Generally, 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.

[0039] Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application for protection, but merely represents selected embodiments of the present application. All other embodiments obtained by persons of ordinary skill in the art based on the embodiments in the present application without creative work are within the scope of protection of the present application.

[0040] It should be noted that similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings. At the same time, in the description of this application, the terms "first", "second", etc. are only used to distinguish the description and should not be understood as indicating or implying relative importance.

[0041] It should be noted that, in this document, relational terms such as first and second, etc. are merely used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations.

[0042] The following describes some embodiments of the present application in detail with reference to the accompanying drawings. In the absence of conflict, the following embodiments and features therein may be combined with each other.

[0043] As mentioned in the background technology, the existing technology has the disadvantage that it is difficult to locate line problems in the area topology system. For example, see Figure 1 , Figure 1 The module diagram of the conventional substation topology system is shown, wherein the substation topology system includes three concentrators, namely concentrator 1, concentrator 2 and concentrator 3, and each concentrator is connected to four electricity meters.

[0044] The area topology described in this application refers to which meters are connected to concentrator 1, which meters are connected to concentrator 2, and which meters are connected to concentrator 3. Figure 1 As can be seen, concentrator 1 can obtain the addresses of meters 1-4, concentrator 2 can obtain the addresses of meters 5-8, and concentrator 3 can obtain the addresses of meters 9-12. However, because the concentrators are interconnected and bidirectional, concentrator 1 can receive not only the addresses of meters 1-4 but also data from concentrators 2 and 3. Consequently, concentrator 1 can actually obtain the addresses of meters 1-12. Similarly, concentrators 2 and 3 can also obtain the addresses of meters 1-12. Consequently, when the concentrators send these meter addresses to the master station, the master station cannot determine the topology of the substations. For example, when concentrator 1 sends data to the master station, it actually sends the addresses of meters 1-12; and when concentrator 2 sends data to the master station, it also sends the addresses of meters 1-12. Consequently, the master station cannot distinguish which meters are connected to concentrator 1 and which are connected to concentrator 2. When line problems occur, locating the line becomes difficult.

[0045] In view of this, in order to solve the above problems, an embodiment of the present application provides a method for determining a substation topology, which realizes rapid positioning of substation topology relationships by setting a directional filtering filter.

[0046] The following is an exemplary description of the method for determining the area topology provided in this application:

[0047] See also Figure 2 The method is applied to a master station 110 of a substation topology system 100. The substation topology system 100 also includes multiple topology loops 120. Each topology loop 120 includes a filter 121, a concentrator 122, and multiple power terminals. The filter 121 is electrically connected to the master station 100 and the concentrator 122, respectively. The concentrator 122 is also electrically connected to the multiple power terminals. The power terminals are electricity meters.

[0048] As an optional implementation, see Figure 3 , the method comprising:

[0049] S102 : Control the filter to be disconnected, so that the multiple power terminals send their own address information to the concentrator connected thereto.

[0050] S104 , controlling the filter to be unidirectional to receive the address packet sent by the concentrator, and determining the substation topology according to the address packet, wherein the address packet includes the address of the concentrator itself and the addresses of multiple power terminals.

[0051] It should be noted that the filters provided in this application are directional filters, meaning they filter out signals other than those with a specified signature, allowing only signals with that signature to pass through. For example, if the signature code for one of the filters is 000010, then signals carrying 000010 will pass through the filter. However, if a signal does not carry 000010, it will be rejected by the filter and will not pass through.

[0052] Please combine Figure 2 When determining the topology of the substations, the filter is first disconnected. This disconnects the concentrator from the master station. The concentrator can receive the addresses of each meter, but cannot send them to the master station. For example, concentrator 1 can only receive and store the addresses of meters 1 through 4, but cannot send them to the master station.

[0053] Only when the master station controls the filter to switch from the disconnected state to the unidirectional conduction state can the concentrator send an address packet to the master station through the filter. This address packet includes the concentrator's own address and the addresses of multiple power terminals. Moreover, since the filter is in the unidirectional conduction state at this time, the signal can only be transmitted from the concentrator to the master station, and cannot be transmitted between concentrators. The reason is:

[0054] Each filter's designated signature is the address of the connected concentrator. For example, filter 1's designated signature is concentrator 1's address, filter 2's is concentrator 2's address, and filter 3's is concentrator 3's address. Each concentrator's address is unique. For example, concentrator 1's address is 000000000001, concentrator 2's address is 000000000011, and concentrator 3's address is 0000000000111. During data transmission, filter 1 allows data from concentrator 1 to pass through, but blocks data from concentrator 2 due to their different designated signatures. This effectively isolates the concentrators and prevents signal crosstalk.

[0055] When the master station receives the address packet sent by the concentrator, it can parse the packet and determine that the addresses of concentrator 1 and meters 1-4 are in one packet, concentrator 2 and meters 5-8 are in another packet, and concentrator 3 and meters 9-12 are in another packet. This allows the master station to determine that concentrator 1 is connected to meters 1-4, concentrator 2 is connected to meters 5-8, and concentrator 3 is connected to meters 9-12. This allows the master station to quickly determine the topological relationships and, if a line problem occurs, quickly locate the line. For example, if a line fault occurs in meter 1, the master station can quickly identify the connection between meter 1 and concentrator 1, confirming that the fault must be in the line between meter 1 and the concentrator, enabling rapid location of the line problem.

[0056] As an implementation method, the step S102 includes:

[0057] A control instruction is broadcast to make the filter non-conductive in both directions.

[0058] That is, the master station directly sends a command to turn off the filter. At this time, no matter what specified feature code the signal carries, it is not allowed to pass.

[0059] As another implementation, the step of S102 includes:

[0060] The control instruction is broadcasted, and the designated characteristic code of the control filter is controlled to be data other than the addresses of all concentrators; wherein the designated characteristic code is a signal identifier that can pass through the filter.

[0061] For example, if the address of concentrator 1 is 000000000001, the address of concentrator 2 is 000000000011, and the address of concentrator 3 is 000000000111, then the designated signature code of filters 1 to 3 is set to 100000000000. In this case, although the filter allows signals with the signature code 100000000000, the signals cannot pass because the addresses of the concentrators do not correspond to it.

[0062] Of course, in addition to controlling the filter to be completely disconnected, the filter can also be controlled to be partially disconnected. As an implementation method, the step S102 includes:

[0063] Controls at most one filter to conduct in both directions and controls the remaining filters to be turned off.

[0064] Specifically, when controlling the filters, synchronization can be omitted; one filter can transmit a signal to the master station. Since the other two filters are disconnected, crosstalk between concentrators is eliminated, ensuring normal line operation. In this embodiment, concentrators 1-3 can be controlled to transmit signals to the master station one by one.

[0065] As an implementation method, the step of S104 includes:

[0066] A control command is broadcast to control the filter to conduct unidirectionally, with the filter's designated signature being the address of the connected concentrator. The designated signature identifies signals that can pass through the filter. By setting the designated signature to the address of the connected concentrator, signals are transmitted only through the concentrator to the master station, preventing crosstalk between concentrators and enabling faster determination of the topology of the substation.

[0067] In the complete control logic, the step S102 includes:

[0068] Broadcasting a first control instruction to turn off the filter and controlling the power terminal to send its own address to the concentrator connected thereto after T1 time;

[0069] After the step of controlling the filter to be disconnected, the method further comprises:

[0070] After time T0, a second control instruction is broadcasted to turn off the filter and the concentrator stores the received address.

[0071] The steps of S104 include:

[0072] The third control instruction is broadcasted after T0 time to control the filter to be unidirectional and the concentrator sends the address packet after T2 time.

[0073] That is, in this application, the master station broadcasts command 1, and after T1 time, all meters broadcast their own address information; due to the principle of directional filter, the meter address information cannot pass through the filter, so each concentrator can only receive the meter in its own area; then wait for T0 time, the master station broadcasts command 2, and the concentrator stores the meter address after receiving it; wait for T0 time, the master station broadcasts command 3, and after T2 time, the concentrator adds the received meter address to its own address to form a packet and reports it to the master station. The master station determines the area topology through the reported address, that is, determines which meter is connected to which concentrator. It should be noted that when the concentrator adds the received meter address to its own address to form an address packet and reports it to the master station, the concentrator's address can be used as the terminal of the address packet, thereby enabling it to pass the filter smoothly.

[0074] Based on the above implementation method, an embodiment of the present application also provides a substation topology system, which includes a main station and multi-way topology loops, each topology loop including a filter, a concentrator and multiple power terminals, the filters are electrically connected to the main station and the concentrator respectively, and the concentrator is also electrically connected to the multiple power terminals; wherein, when the main station controls the filter to disconnect, the multiple power terminals are used to send their own address information to the concentrator; when the main station controls the filter to be unidirectionally conducted, the concentrator is used to send an address packet to the main station, wherein the address packet includes the concentrator's own address and the addresses of the multiple power terminals, and the main station is used to determine the substation topology based on the address packet.

[0075] Optionally, the master station is further configured to control a designated feature code of the filter, wherein the designated feature code is a signal identifier capable of passing through the filter.

[0076] Optionally, each filter includes an address, and the master station is further configured to control the on / off state of the filter based on the address of the filter in each topological loop. That is, when independently controlling the on / off state of each filter, independent control instructions can be sent to control the execution of the corresponding filter.

[0077] The present application provides a method for determining a substation topology and a substation topology system. The method for determining a substation topology is applied to the main station of the substation topology system. The substation topology system also includes a multi-way topology loop, each of which includes a filter, a concentrator, and a plurality of power terminals. The filter is electrically connected to the main station and the concentrator respectively, and the concentrator is also electrically connected to the plurality of power terminals. First, the filter is controlled to be disconnected so that the plurality of power terminals send their own address information to the concentrator connected thereto; then the filter is controlled to be unidirectionally conducted to receive the address packet sent by the concentrator, and the substation topology is determined based on the address packet, wherein the address packet includes the concentrator's own address and the addresses of the plurality of power terminals. Since the present application adds a filter and the main station can control the conduction direction of the filter, directional filtering is achieved, ensuring that each concentrator will only send the address of the power terminal connected thereto to the main station, and there will be no signal crosstalk, so that the main station can quickly determine the substation topology, and thus the staff can quickly locate the line problem.

[0078] The above description is merely a preferred embodiment of the present application and is not intended to limit the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

[0079] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above and that the present application can be implemented in other specific forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present application is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

Claims

1. A method for determining a substation topology, characterized in that: The method is applied to a master station of a substation topology system, wherein the substation topology system further includes a multi-way topology loop, each of which includes a filter, a concentrator, and a plurality of power terminals, wherein the filter is electrically connected to the master station and the concentrator, respectively, and the concentrator is also electrically connected to the plurality of power terminals; the method includes: controlling the filter to be disconnected so that the plurality of power terminals send their own address information to the concentrator connected thereto; Controlling the filter to be unidirectional to receive an address packet sent by the concentrator, and determining a substation topology according to the address packet, wherein the address packet includes the address of the concentrator itself and the addresses of the plurality of power terminals; The step of controlling the filter to disconnect comprises: A control instruction is broadcasted, and the designated characteristic code of the filter is controlled to be data other than all concentrator addresses; wherein the designated characteristic code is a signal identifier that can pass through the filter.

2. The method for determining the area topology according to claim 1, wherein: The step of controlling the filter to disconnect comprises: A control instruction is broadcast to make the filter non-conductive in both directions.

3. The method for determining the area topology according to claim 1, wherein: The step of controlling the filter to disconnect comprises: Controls at most one filter to conduct in both directions and controls the remaining filters to be turned off.

4. The method for determining the area topology according to claim 1, wherein: The step of controlling the filter to be unidirectional comprises: A control instruction is broadcasted to control the filter to be unidirectional, and the designated characteristic code of the filter is the address of the concentrator connected thereto; wherein the designated characteristic code is a signal identifier that can pass through the filter.

5. The method for determining the area topology according to claim 1, wherein: The step of controlling the filter to disconnect comprises: Broadcasting a first control instruction to turn off the filter and control the power terminal to send its own address to the concentrator connected thereto after T1 time; After the step of controlling the filter to be disconnected, the method further comprises: After time T0, a second control instruction is broadcasted to turn off the filter and the concentrator stores the received address.

6. The method for determining the area topology according to claim 5, wherein: The step of controlling the filter to be unidirectional comprises: After T0, a third control instruction is broadcasted to control the filter to be unidirectional and the concentrator sends an address packet after T2.

7. A station area topology system, characterized in that: The substation topology system includes a master station and a multi-way topology loop, each of the topology loops includes a filter, a concentrator, and a plurality of power terminals, the filter is electrically connected to the master station and the concentrator respectively, and the concentrator is also electrically connected to the plurality of power terminals; the master station is used to perform the method according to any one of claims 1 to 6; wherein, When the master station controls the filter to be disconnected, the plurality of power terminals are used to send their own address information to the concentrator; When the master station controls the filter to be unidirectional, the concentrator is configured to send an address packet to the master station, wherein the address packet includes the address of the concentrator itself and the addresses of the multiple power terminals; The master station is used to determine the area topology according to the address packet.

8. The area topology system according to claim 7, wherein: The master station is further configured to control a designated feature code of the filter, wherein the designated feature code is a signal identifier capable of passing through the filter.

9. The area topology system according to claim 7, wherein: Each of the filters includes an address, and the master station is further configured to control the on / off state of the filter according to the address of the filter in each topology loop.

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