Method and system for associating primary equipment and secondary equipment of SSD (Solid State Disk) file of transformer substation

Abstract

The invention belongs to the field of equipment automatic association, and particularly relates to a transformer substation SSD file primary and secondary equipment association method and system. Comprising the steps of determining a specific type of primary equipment in each interval and updating an equipment name according to an interval wiring mode and primary equipment information in an SSD file; secondary equipment in each interval is determined according to secondary equipment IED names and device descriptions in the SCD file; obtaining a measurement class LN of the secondary equipment in the same interval by combining an established association rule base containing the secondary equipment and the LN associated with each primary equipment of the whole station and the primary equipment and the secondary equipment in each interval; for primary equipment of a circuit breaker type in a branch interval connected with a bus or a main transformer, taking bus protection LN or main transformer protection LN as cross-interval secondary equipment LN associated with the primary equipment; and adding the information of the secondary equipment and the LN in the same interval associated with the primary equipment and the information of the cross-interval secondary equipment and the LN into the SSD file so as to realize the association of the primary equipment and the secondary equipment in the SSD file.

Description

Technical Field

[0001] The present invention belongs to the field of automatic equipment association, and in particular relates to a method and system for associating primary and secondary equipment of an SSD file in a substation. Background Art

[0002] State Grid Corporation of China is accelerating the construction of a unique, internationally leading modern equipment management system. This system promotes intelligent equipment, digital operations, lean management, and a professionalized workforce, driving the transformation and upgrading of equipment management. This system also requires changes to traditional operations and maintenance models to improve the quality and efficiency of equipment management. To keep pace with the development of equipment management, those skilled in the art have recently proposed several equipment management technologies, including automatic association of primary and secondary equipment based on SSD files. This technology establishes associations between primary and secondary equipment within the substation's SSD file to generate an SSD file containing these associations.

[0003] This technology involves the substation SSD file, which is part of the SCD file content and contains the complete substation primary system topology, primary equipment model information, association information between primary equipment and secondary equipment LN (i.e., secondary equipment measurement points), and the functional configuration of various application systems in the substation.

[0004] Before the release of standard documents, SSD file-based automatic association technology for primary and secondary devices still had many technical flaws. For example, the configuration of individual services for primary and secondary device associations was fragmented, with a high degree of manufacturer-specific privatization. Currently, automatic association was not implemented, and there was no standardized configuration process. This high degree of manufacturer-specific privatization resulted in inconsistent interface configuration tools for SSD primary and secondary device associations, making automatic association difficult and requiring manual configuration. However, manual configuration methods were not standardized, and the primary and secondary associations lacked key technical support. Manual configuration was also prone to errors, complex, time-consuming, and inaccurate due to the varying skills of on-site personnel at various manufacturers. Summary of the Invention

[0005] The purpose of the present invention is to provide a method and system for associating primary and secondary devices in a substation SSD file, which is used to solve the problem in the prior art that associating primary and secondary devices in an SSD file through manual configuration is error-prone, complex, time-consuming and has low accuracy.

[0006] In order to achieve the above object, the present invention provides a method for associating primary and secondary devices of a substation SSD file, the method comprising:

[0007] Based on the bay wiring method and primary device information in the SSD file, determine the specific type of each primary device in each bay and update the primary device name accordingly; based on the secondary device IED name and device description in the SCD file, determine the secondary device in each bay;

[0008] Combined with the established association rule base containing all secondary devices and LNs associated with each primary device in the entire station, as well as the primary and secondary devices in each bay, the secondary device measurement class LN associated with each primary device in the same bay is obtained. Combined with the association rule base, the primary and secondary devices in each bay, and the similarity between the updated primary device naming and the DOI standardized naming of the secondary device model in the SCD, the secondary device switch controller class LN and interlocking class LN associated with each primary device in the same bay are obtained.

[0009] For a primary device of the circuit breaker type in a branch bay connected to a busbar or main transformer, determine the busbar branch or main transformer branch corresponding to the virtual terminal connection relationship of the busbar protection or main transformer protection of the bay to which the primary device belongs, and use the busbar protection LN of the corresponding busbar branch or the main transformer protection LN of the main transformer branch as the cross-bay secondary device LN associated with the primary device;

[0010] The specific devices of different secondary devices associated with the primary device are distinguished through the naming of IED;

[0011] The information of each secondary device and LN in the same interval and the cross-interval secondary device and LN associated with each primary device is added to the information corresponding to the primary device in the SSD file to realize the association between the primary and secondary devices in the SSD file.

[0012] Beneficial effects: The present invention provides a method for associating primary and secondary devices in a substation SSD file. In this method, for primary and secondary devices in the same bay, the association relationship between the primary device and the secondary device LN in the same bay can be determined based on the association relationship between the bay and the primary device determined by the standardized SSD file, the association relationship between the bay and the secondary device determined by the standardized SCD file, and the association relationship between the primary device and the secondary device LN; and for primary and secondary devices across bays, the association relationship between the primary device and the secondary device LN can be deduced using the virtual terminal connection relationship. After obtaining the association relationship between the primary device and the secondary device LN, different IED names can be given to the specific devices of different secondary devices to ensure that the primary device can be accurately associated with each specific secondary device to achieve the effect of distinguishing different specific devices. Finally, the substation SSD file is modified according to the association relationship between each primary device in the station and the secondary devices in the same bay and across bays, that is, the association relationship can be stored in the SSD file. Ultimately, the automatic association of primary and secondary devices can be achieved based on the association relationship.

[0013] In summary, when the association of primary and secondary devices is realized by this method, the association relationship of primary and secondary devices is gradually determined through the association relationship between different objects using standardized SSD files and SCD files. Therefore, the association relationship determined by this method is accurate and reliable; and after the association relationship is determined, it is only necessary to write the association relationship into the SSD file, so that the association can be realized automatically without the need to associate each device one by one. The efficiency of device association is significantly improved, and the automatic association of primary and secondary devices is convenient.

[0014] Furthermore, the method of establishing the association rule base includes:

[0015] According to the requirements of the SCD file technical specifications and the SSD modeling project implementation technical specifications for the association of primary and secondary equipment, an association rule library containing all secondary equipment and LNs associated with each primary equipment in the entire station is established.

[0016] Furthermore, based on the interval wiring mode and primary device information in the SSD file, the specific type of each primary device in each interval is determined in the following ways:

[0017] According to the positional relationship between the primary equipment and the main equipment and the busbar or main transformer in the interval in the SSD file, combined with the primary equipment naming in the SSD file and the primary equipment type code in the SSD modeling project implementation technical specifications, the specific type of each primary equipment in each interval is determined.

[0018] Furthermore, by combining the association rule base, the primary and secondary devices in each bay, and the similarity between the updated primary device naming and the DOI standardized naming of the secondary device model in the SCD, the switch controller class LN and interlock class LN of the secondary device in the same bay associated with each primary device are obtained. The following methods are included:

[0019] For each bay, from all secondary devices and LNs associated with the primary devices in this bay according to the association rule base, select the switch controller class LN and interlock class LN belonging to the secondary devices in this bay;

[0020] For the selected switch controller class LN belonging to the secondary equipment in this interval, calculate the similarity between the updated primary equipment name and the DOI standardized name of the secondary equipment model to which the selected switch controller class LN belongs. The switch controller class LN of the secondary equipment with the highest similarity is used as the switch controller class LN of the secondary equipment in the same interval associated with the primary equipment.

[0021] For the interlocking class LN selected for the secondary equipment within this interval, calculate the similarity between the updated primary equipment name and the DOI standardized name of the secondary equipment model to which the selected interlocking class LN belongs, and use the interlocking class LN of the secondary equipment with the highest similarity as the interlocking class LN of the secondary equipment in the same interval associated with the primary equipment.

[0022] Furthermore, by combining the established association rule base including all secondary devices and LNs associated with each primary device in the entire station, as well as the primary devices and secondary devices in each interval, the method of obtaining the measurement class LN of the secondary devices in the same interval associated with each primary device includes:

[0023] For each interval, from all secondary devices and LNs associated with each primary device in this interval according to the association rule base, the measurement class LN belonging to the secondary device in this interval is selected as the measurement class LN of the secondary device in the same interval associated with the primary device.

[0024] Furthermore, each primary device within each determined interval and each secondary device within each determined interval are associated with the interval to which they belong through a physical ID.

[0025] Furthermore, a method for determining the busbar branch or main transformer branch corresponding to the bay to which the primary equipment belongs in the virtual terminal connection relationship of the busbar protection or main transformer protection includes:

[0026] If, in the virtual terminal connection relationship of the busbar protection, the electrical parameters of a certain busbar protection branch are obtained from a collection execution unit corresponding to a certain bay, then the busbar branch corresponding to the bay in the virtual terminal connection relationship of the busbar protection is determined to be the busbar protection branch;

[0027] If, in the virtual terminal connection relationship of the main transformer protection, the electrical parameters of a main transformer protection branch on the high side, middle side or low side of the main transformer are taken from the acquisition execution unit corresponding to a certain interval, then the main transformer branch corresponding to the interval in the virtual terminal connection relationship of the main transformer protection is determined to be the main transformer protection branch.

[0028] Furthermore, the busbar protection LN of the busbar branch includes: MMXU measurement LN, PTRC protection trip LN and RBRF circuit breaker failure LN of busbar protection;

[0029] The main transformer protection LN of the main transformer branch includes: MMXU measurement LN of the main transformer protection, PTRC protection trip LN and RBRF circuit breaker failure LN.

[0030] The present invention also provides a substation SSD file primary and secondary equipment association system, including a processor, the processor is used to execute a computer program to implement the steps of the above-mentioned substation SSD file primary and secondary equipment association method.

[0031] The substation SSD file primary and secondary equipment association system can achieve the same beneficial effects as the above-mentioned substation SSD file primary and secondary equipment association method. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Flowchart of the method for associating SSD files with primary and secondary devices in a substation according to an embodiment of the present invention;

[0033] Figure 2 This is a topological diagram of the 125 line intervals in the implementation of the substation SSD file primary and secondary equipment association method of the present invention;

[0034] Figure 3 This is an example diagram of the naming of measurement points in the secondary equipment model in the implementation method of the substation SSD file-secondary equipment association method of the present invention;

[0035] Figure 4 This is a flowchart of the automatic association of the primary equipment with the switch controller class and interlocking class LN of the secondary equipment in the substation SSD file primary and secondary equipment association method of the present invention;

[0036] Figure 5 This is an example diagram of the SV virtual terminal connection relationship of the 220kV I / II bus protection P_M2212A in the implementation of the substation SSD file primary and secondary equipment association method of the present invention. DETAILED DESCRIPTION

[0037] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and implementation methods.

[0038] Implementation method for associating primary and secondary equipment in substation SSD files

[0039] This embodiment provides a technical solution for a method of associating primary and secondary devices in a substation SSD file. The main idea of ​​this solution is to establish a correspondence between the primary device and the measuring points of the secondary equipment used to serve the primary device (including the secondary equipment in this interval and across intervals), and update the SSD file according to the correspondence, and automatically associate the primary and secondary devices according to the updated SCD file (the SSD file is included in the SCD file, which is equivalent to updating the SCD file).

[0040] In this embodiment, the specific type of each primary device in each interval is determined and the primary device name is updated accordingly based on the interval wiring method and primary device information in the SSD file; the secondary device in each interval is determined based on the name of the secondary device IED and the device description of the secondary device in the SCD file.

[0041] Combined with the established association rule base containing all secondary devices and LNs associated with each primary device in the entire station, as well as the primary and secondary devices in each interval, the measurement class LN of the secondary devices in the same interval associated with each primary device is obtained;

[0042] Combining the association rule base, the primary and secondary devices in each bay, and the similarity between the updated primary device naming and the DOI standardized naming of the secondary device model in the SCD, the switch controller class LN and interlock class LN of the secondary device in the same bay associated with each primary device are obtained;

[0043] For a primary device of the circuit breaker type in a branch bay connected to a busbar or main transformer, determine the busbar branch or main transformer branch corresponding to the virtual terminal connection relationship of the busbar protection or main transformer protection of the bay to which the primary device belongs, and use the busbar protection LN of the corresponding busbar branch or the main transformer protection LN of the main transformer branch as the cross-bay secondary device LN associated with the primary device;

[0044] The specific devices of different secondary devices associated with the primary device are distinguished through the naming of IED;

[0045] The information of each secondary device and LN in the same interval and the cross-interval secondary device and LN associated with each primary device is added to the information corresponding to the primary device in the SSD file to realize the association between the primary and secondary devices in the SSD file.

[0046] refer to Figure 1 The order of "obtaining the measurement LN of the secondary device associated with each primary device within the same bay" and "obtaining the switch controller LN and interlock LN of the secondary device associated with each primary device within the same bay" is not fixed and can be flexibly selected in different embodiments. Even if two threads are used to perform both operations simultaneously, the basic logic of this method is not affected. Furthermore, the operation of associating the secondary device LN can be performed simultaneously on multiple primary devices.

[0047] Therefore, based on standardized substation information such as standardized SSD files and SCD files, the above method determines the association relationship between the primary equipment within the station and the secondary equipment and LNs within the same bay, the secondary equipment and LNs across bays, and the association relationship between the primary equipment and specific secondary equipment devices, and modifies the substation SSD file accordingly. This is equivalent to adding the secondary equipment information in the SCD file to the corresponding SSD file according to the corresponding association relationship, thereby realizing the association between the SSD file and the secondary equipment. The association relationships used include:

[0048] Relationship 1: The association relationship between all secondary devices associated with each primary device in the entire site, and the association relationship between all secondary device LNs associated with each primary device in the entire site (i.e., the association rule base);

[0049] Relationship 2: The association between each bay in the station and the primary equipment within the bay, determined using the standardized SSD file;

[0050] Relationship 3: The relationship between each bay in the station and the secondary equipment in the bay determined using the standardized SCD file;

[0051] Relationship 4: The relationship between each primary device in the station and the secondary device LN in the same bay (including measurement type LN, switch controller type LN and interlocking type LN);

[0052] Relationship 5: The association between some special primary devices (i.e., primary devices of the circuit breaker type in the branch bay connected to the busbar or main transformer) and the cross-bay secondary devices LN determined by virtual terminal connections;

[0053] Relationship 6: The correspondence between the primary equipment and the specific devices of different secondary equipment determined by using standardized IED naming.

[0054] In this method, for primary and secondary devices in the same bay, the association relationship between the primary and secondary devices (i.e., relationship 4) can be derived based on the association relationship between the bay and the primary device (i.e., relationship 2), the association relationship between the bay and the secondary device (i.e., relationship 3), and the association relationship between the primary and secondary device LNs (i.e., relationship 1). For primary and secondary devices across bays, the association relationship between the primary and secondary device LNs (i.e., relationship 1) and the virtual terminal connection relationship can be used to derive the association relationship between the primary and secondary devices (i.e., relationship 5). After obtaining the association relationship between the primary and secondary device LNs, the effect of distinguishing different specific devices can be achieved through relationship 6 (i.e., by naming the specific IEDs of different secondary devices differently, ensuring that the primary device can be accurately associated with each specific secondary device device). Finally, the substation SSD file is modified based on the association relationship between each primary device within the station and the secondary devices in the same bay and across bays, so that the association relationship can be stored in the SSD file. Ultimately, automatic association of primary and secondary devices can be achieved based solely on this association relationship.

[0055] In summary, when the association of primary and secondary devices is realized by this method, standardized SSD files and SCD files are used, and the association relationships between different objects (that is, the association relationships between the associated objects involved in relationships one to six) are gradually used to determine the association relationships of the primary and secondary devices. Therefore, the association relationships determined by this method are accurate and reliable; and after the association relationships are determined, it is only necessary to write the association relationships into the SSD file to facilitate automatic association without the need for one-to-one association for individual devices. The efficiency of device association is significantly improved, and it is convenient to realize the automatic association of primary and secondary devices.

[0056] Methods for determining the specific type of each primary device in each interval based on the interval wiring method and primary device information in the SSD file include:

[0057] According to the positional relationship between the primary equipment and the main equipment and the busbar or main transformer in the interval in the SSD file, combined with the primary equipment naming in the SSD file and the primary equipment type code in the SSD modeling project implementation technical specifications, the specific type of each primary equipment in each interval is determined.

[0058] In this embodiment, based on the requirements for the association of primary and secondary devices in the DL / T1873-2018 specification (i.e., the SCD file technical specification, where SCD stands for Substation Configuration Description, i.e., the entire station system configuration file) and the DL / T1874-2018 specification (i.e., the SSD modeling engineering implementation technical specification, where SSD stands for System Specification Description, i.e., the system specification description file), an association rule base for primary and secondary equipment LNs for all secondary equipment in the entire station (i.e., within the entire substation) is established. This association rule base is used to provide the association relationship between all secondary equipment and LNs associated with each primary equipment in the entire station (i.e., the rule base provides not only the association relationship between primary and secondary equipment, but also the association relationship between primary and secondary equipment LNs). It should be noted that the information that can be provided by this rule base includes all secondary equipment and LNs that different primary equipment may theoretically be associated with; however, when the association is actually performed, the specific associated secondary equipment and LNs have not yet been determined.

[0059] Specifically, for any primary device in the station, the rule base can provide the following associations:

[0060] 1) The relationship between the primary device and all the secondary devices it is to be associated with;

[0061] 2) The association relationship between the primary device and the LN (i.e., measuring points) corresponding to all the secondary devices it wants to associate with.

[0062] In summary, based on this rule base, we can obtain the association relationship between all "primary equipment-secondary equipment-secondary equipment LN" in the station. As shown in Table 1, the table shows the specific content of the association rule base:

[0063] Table 1

[0064]

[0065]

[0066] In the above table, taking the primary device with device type EBUS and device name bus as an example, all secondary devices (i.e., topologically connected devices) associated with this primary device include "measurement and control" and "busbar protection". Among them, there is only one measurement point (i.e., logical node) associated with "measurement and control" for the bus, namely MMXU (measurement type measurement point); and there are two measurement points associated with "busbar protection", namely PDIF and RBRF.

[0067] The SSD file contains the interval wiring method and primary device information under the voltage level, while the SCD file contains information about secondary devices. Therefore, in one embodiment of this embodiment, when the typical wiring of the interval primary devices is clear in the SSD file, the electrical network topology analysis rules (i.e., the electrical network topology analysis rules under the SSD file interval wiring method) can be formulated based on the obtained "primary device-secondary device-secondary device LN" association relationship, so as to define the specific type of the primary device according to the rule, and update the naming of the primary device according to its specific type (i.e., determine the specific type of each primary device in each interval and update the primary device naming accordingly). After the naming is updated, it is convenient to use the primary device naming in the future to achieve matching of the DOI and LN of the primary device and the secondary device.

[0068] Specifically, the methods for defining the detailed types of primary equipment according to the above rules include: taking the busbar or main transformer as the starting point, and analyzing based on the principle that only one main equipment is contained in an interval (that is, taking the busbar or main transformer as the source, locating the main equipment, and then defining an interval based on one main equipment), and distinguishing the detailed types of specific primary equipment based on the positional relationship between the primary equipment and the main equipment, the busbar and the main transformer, combined with the primary equipment type code defined in Appendix D of DL / T1874-2018.

[0069] Take the 125 bay in a substation SSD file as an example. The topology of the 125 bay is as follows: Figure 2 As shown in the figure, the busbar EBUS110kVIM is taken as the starting point, and the IFL125L outgoing line is used as the main equipment to define the 125 line interval.

[0070] Among them, IFL is the equipment type code of the feeding line, and the location is at the end of the wiring, so the detailed type defined by IFL125L is the outgoing line;

[0071] DIS is the equipment type code of the disconnector / earthing switch. The location is connected to the busbar EBUS110kVIM, so the detailed type defined by DIS5 is IM busbar switch.

[0072] CBR is the device type code of the circuit breaker, so CBR1 defines the detailed type as circuit breaker;

[0073] DIS4 is located between the circuit breaker (CBR1) and the busbar (EBUS110kVIM), so the detailed type of DIS4 is defined as the switch busbar side grounding switch.

[0074] Similarly, the detailed type of DIS3 is the switch line side ground knife, DIS2 is the line switch knife, and DIS1 is the line ground knife.

[0075] For secondary equipment measurement points, the published "Standardized Definition of Automation Equipment Model for 110kV Intelligent Substations in Zhejiang Power Grid" standardizes the naming, sorting, and reference paths of virtual terminals for measurement and control devices, protection and measurement devices, merging units, and intelligent terminals based on the typical wiring of primary equipment, and forms a solidified ICD version after testing. Figure 3 As shown in Figure 1, the naming of measurement points in the secondary equipment model is standardized and fixed.

[0076] In one embodiment of this embodiment, after each bay is defined in the SSD file, it is necessary to determine the primary and secondary devices under each bay. The determination method includes: according to the naming of the secondary device IED in the SCD file (for example Figure 3 All secondary devices within each bay are identified using the "Zhejiang Standard Name" in the SSD standard and the device description (which describes the device's function and purpose) in the actual project. All primary devices within each bay are identified through network topology analysis of the SSD bay wiring. Based on the identified primary and secondary devices, two correspondences are established: between the bay and its primary devices, and between the bay and its secondary devices.

[0077] In this embodiment, each primary device within each determined interval and each secondary device within each determined interval are associated with the interval to which they belong through a physical ID. Since the physical ID is unique (i.e., the physical ID is a unique identification attribute of the primary and secondary devices of the high-reliability substation), the above two correspondences are established based on the physical ID. After the correspondences between the interval and the secondary device, and between the interval and the primary device are established based on the physical ID, even if the interval is renamed, the device is renamed, the primary and secondary device descriptions and the measurement point instantiations occur during the construction of the substation, the correspondence between the interval and the secondary device will not be affected. In other embodiments, other unique identifiers can also be used to establish the correspondences between the interval and the secondary device, and between the interval and the primary device.

[0078] Taking the 125 bay of a 110kV line as an example, based on the naming and functional usage of the 125 measurement and control, protection, merging units, and intelligent terminals in actual projects, it is clarified that the 125 measurement and control, protection, merging units, and intelligent terminals should be assigned to the 125 bay of the 110kV line. Through the aforementioned 125 bay network topology analysis, it is clarified that the primary equipment subordinate to the 125 bay includes the CBR1 circuit breaker, DIS5 busbar switch, DIS2 line switch, DIS4 busbar-side earthing switch, DIS3 switch line-side earthing switch, and DIS1 line earthing switch. This establishes the relationship between the bay, its subordinate primary equipment, and its subordinate secondary equipment as follows:

[0079] Table 2

[0080]

[0081] Table 2 shows all the primary and secondary equipment in the 125-bay 110kV line. The relationships in Table 2 include:

[0082] a) The relationship between the 110kV line 125 bay and its six subordinate primary devices;

[0083] b) The relationship between the 110kV line 125 bay and its four subordinate secondary devices.

[0084] After determining the primary and secondary devices within each bay, you can use these devices to determine the association between the primary devices and the LNs of the secondary devices within that bay. Note that Table 2 does not include the association between primary and secondary devices; that is, the second and third columns in Table 2 do not correspond.

[0085] However, the LNs for different attributes of the secondary equipment in this interval are associated differently with the primary equipment. Secondary equipment measurement LNs can be directly associated with primary equipment, meaning that all measurement attributes of the secondary equipment are used to display the relevant attributes of the primary equipment. However, there is a distinction between secondary equipment switch controller and interlocking LNs. If there are multiple switch controller LNs for the same secondary equipment, the control functions and controlled objects of the different LNs will differ. Therefore, the secondary equipment switch controller and interlocking LNs corresponding to the primary equipment need to be further identified as specific individual LNs. For example, CSWI1 and CSWI2 of the measurement and control device are often used for remote control of different primary equipment. For DIS1, it is not yet clear whether it is associated with CSWI1 or CSWI2 of the measurement and control device. Similarly, CILO1 and CILO2 of the same secondary equipment are often used for interlocking different primary equipment, and the primary equipment associated with CILO1 and CILO2 needs to be further determined.

[0086] In this embodiment, the switch controller class LN and interlock class LN of the secondary device in the same bay associated with each primary device are obtained by combining the association rule base, the primary and secondary devices in each bay, and the similarity between the updated primary device names and the DOI standardized names of the secondary device models in the SCD. The method includes:

[0087] For each bay, the switch controller type LN and interlock type LN belonging to the secondary equipment in this bay are selected from all the secondary equipment and LNs associated with the primary equipment in this bay according to the association rule base.

[0088] For the selected switch controller class LN belonging to the secondary equipment within this interval, calculate the similarity between the updated primary equipment name and the DOI standardized name of the secondary equipment model to which the selected switch controller class LN belongs, and use the switch controller class LN of the secondary equipment with the highest similarity as the switch controller class LN of the secondary equipment in the same interval associated with the primary equipment.

[0089] For the interlocking class LN selected for the secondary equipment within this interval, calculate the similarity between the updated primary equipment name and the DOI standardized name of the secondary equipment model to which the selected interlocking class LN belongs, and use the interlocking class LN of the secondary equipment with the highest similarity as the interlocking class LN of the secondary equipment in the same interval associated with the primary equipment.

[0090] In this embodiment, the method of obtaining the secondary device measurement class LN associated with each primary device in the same interval by combining the established association rule base containing all secondary devices and LNs associated with each primary device in the entire station, as well as the primary devices and secondary devices in each interval, includes:

[0091] For each interval, from all secondary devices and LNs associated with each primary device in this interval according to the association rule base, the measurement class LN belonging to the secondary device in this interval is selected as the measurement class LN of the secondary device in the same interval associated with the primary device.

[0092] In one embodiment of this embodiment, the automatic association method between the primary equipment and the secondary equipment switch controller type and interlock type LN of this interval is as follows: Figure 4 As shown, the specific contents of this method include:

[0093] 1) If the LN is the LN of the measurement class of the secondary equipment in this interval (that is, all the secondary equipment and LNs in this interval associated with the primary equipment according to the association rule base), it can be directly associated with the primary equipment. In other words, the measurement class LN of the secondary equipment in this interval is directly used as the measurement class LN of the secondary equipment in the same interval associated with the primary equipment;

[0094] 2) If the LN is the switch controller class and interlocking class LN of the secondary equipment in this interval (that is, all secondary equipment and LNs associated with the primary equipment according to the association rule library), then association is performed according to the following association rules: If the key information of the primary equipment name in a certain SSD (this name is the updated name) and the standardized naming of the DOI of the secondary equipment model in the SCD has the highest degree of match (that is, the standardized naming similarity between the primary equipment name in the SSD and the DOI of the secondary equipment model in the SCD is the highest), then the LN belonging to the secondary equipment model DO is automatically associated with the primary equipment in the SSD (that is, the LN is used as the secondary equipment interlocking class LN in the same interval associated with the primary equipment).

[0095] Among them, when matching key information, a key information similarity matching algorithm is used to automatically select the DOI of the secondary device with the largest similarity value with the primary device name.

[0096] For example, when the primary devices and topological relationships in the SSD have been standardized according to the Zhejiang model,

[0097] The name of the primary device of the circuit breaker in the 110kV line bay in SSD is "circuit breaker position".

[0098] The description of the switch position DOI of the 110kV line measurement and control device in the SCD is also "circuit breaker position" or "circuit breaker", which also complies with the standard naming. Its ref is "CTRL / CBCSWI1.Pos.stVal". Therefore, the switch controller class LN automatically associated with the primary equipment of the circuit breaker in the 110kV line interval in the SSD is "CTRL / CBCSWI1" of the 110kV line measurement and control.

[0099] In fact, some primary devices may be associated with LNs of secondary devices in the same bay as well as LNs of secondary devices across bays. These primary devices have the following two characteristics:

[0100] ① The busbar branch or main transformer branch corresponding to the bay to which the primary equipment belongs in the virtual terminal connection relationship of the busbar protection or main transformer protection;

[0101] ②The device type of this primary device is a circuit breaker.

[0102] In this embodiment, a method for determining the busbar branch or main transformer branch corresponding to the bay to which the primary equipment belongs in the virtual terminal connection relationship of the busbar protection or main transformer protection includes:

[0103] If, in the virtual terminal connection relationship of the busbar protection, the electrical parameters of a certain busbar protection branch are obtained from a collection execution unit corresponding to a certain bay, then the busbar branch corresponding to the bay in the virtual terminal connection relationship of the busbar protection is determined to be the busbar protection branch;

[0104] If, in the virtual terminal connection relationship of the main transformer protection, the electrical parameters of a main transformer protection branch on the high side, middle side or low side of the main transformer are taken from the acquisition execution unit corresponding to a certain interval, then the main transformer branch corresponding to the interval in the virtual terminal connection relationship of the main transformer protection is determined to be the main transformer protection branch.

[0105] In one embodiment of this implementation, feature ① arises from the fact that when a line acts as a busbar branch, the busbar protection voltage is derived from the TVTR associated with the bay, and the branch current is derived from the TCTR associated with the same bay, also associated with the PTRC. Furthermore, the line bay circuit breaker protection is provided through both the line protection PTRC output and the busbar protection PTRC output. Therefore, the busbar performs current acquisition and protective tripping on the line branch. Therefore, for secondary devices (LN) associated with a single-bay branch circuit breaker, busbar protection for both the bay's secondary devices and the cross-bay secondary devices must be considered.

[0106] Similarly, for feature ②, since the currents and voltages on the high, middle, and low sides of the main transformer protection are taken from the TCTR and TVTR on the same side associated with the PTRC, the high, middle, and low side branches of the main transformer can be determined through the connection relationship of the main transformer protection SV virtual terminals, and the LN of the main transformer protection corresponding to the circuit breaker on each side can be further determined.

[0107] For this type of primary equipment associated with the LN of cross-bay secondary equipment, since it is connected to the cross-bay secondary equipment through virtual terminals to achieve data interaction, the IEDNAME and LN of the associated secondary equipment can be determined based on the virtual terminal connection relationship.

[0108] Therefore, in this embodiment, for a primary device of the circuit breaker type in a branch bay connected to a busbar or a main transformer (i.e., a primary device that satisfies characteristics ① and ②), the busbar branch or main transformer branch corresponding to the virtual terminal connection relationship of the busbar protection or main transformer protection of the bay to which the primary device belongs is determined, and the busbar protection LN of the corresponding busbar branch (the busbar protection LN of the busbar branch includes: MMXU measurement LN of busbar protection, PTRC protection trip LN and RBRF circuit breaker failure LN) or the main transformer protection LN of the main transformer branch (the main transformer protection LN of the main transformer branch includes: MMXU measurement LN of main transformer protection, PTRC protection trip LN and RBRF circuit breaker failure LN) is used as the cross-bay secondary device LN associated with the primary device. Reference Figure 5Taking the SV virtual terminal connections of the 220kV I / II busbar protection P_M2212A as an example, the corresponding "receiving device" and "transmitting device" information indicates that line 264 is a busbar protection branch, and the current of busbar branch 7 is obtained from the 264-line bay acquisition and execution unit A. Therefore, the busbar protection MMXU measurement LN associated with the 264-line bay circuit breaker is the MMXU of busbar protection branch 7. Furthermore, since the busbar branch current is obtained from the TCTR of the same bay associated with the PTRC, the busbar protection PTRC trip LN and RBRF breaker failure LN associated with the 264-line bay circuit breaker are the PTRC and RBRF of busbar protection branch 7.

[0109] Different secondary device types are distinguished based on highly reliable secondary device naming rules, and primary devices are automatically associated and clearly located with the IEDNAME and LN of the secondary devices to obtain the association relationship between the primary and secondary devices.

[0110] The association relationships in 1) and 2) are obtained through the association rule library, that is, for each primary device, all its specific secondary device LNs to be associated are listed; by determining the association relationship between the primary device and the secondary device LN of the same interval, the automatic association of the primary device and the secondary device LN of the same interval can be achieved; by determining the association relationship between the primary device and the cross-interval secondary device LN, the automatic association of the primary device and the cross-interval secondary device LN can be achieved. At the same time, the interval, the primary device belonging to the interval, and the secondary device belonging to the interval are also clarified.

[0111] In this embodiment, the specific devices of different secondary devices associated with the primary device are distinguished by naming the IED; the information of each secondary device and LN in the same interval and the cross-interval secondary device and LN associated with each primary device are added to the information corresponding to the primary device in the SSD file to realize the association between the primary and secondary devices in the SSD file.

[0112] In one embodiment of this embodiment, after obtaining the above information, the standardized IED naming rules can be used to distinguish the devices between the secondary devices belonging to the bay, and the primary device can be automatically associated and clearly located to the IEDNAME and LN of the secondary device to obtain the association relationship between the primary device and the secondary device.

[0113] The naming of secondary devices (i.e., IED names) in the high-reliability monitoring system complies with the requirements of Appendix B of DL / T 1873-2018, which is a standardized IED naming system. Therefore, protection, measurement and control, merging units, and intelligent terminals of the same bay secondary device type can be distinguished by IED names, thereby achieving differentiation between different devices. Specifically, some standardized IED naming rules are shown in Table 3:

[0114] Table 3

[0115] P_ Protect C_ measurement and control M_ Merge cells I_ Smart Terminal MI Merging unit and smart terminal into one PC_ Protection and measurement and control in one

[0116] In summary, in addition to the above relationships 1) and 2), the following association relationship can also be obtained through this embodiment:

[0117] 1) The relationship between each bay and its subordinate primary equipment;

[0118] II) The relationship between each bay and its subordinate secondary equipment;

[0119] III) The relationship between the primary equipment and the secondary equipment LN of this interval;

[0120] IV) The relationship between the primary equipment and the cross-bay secondary equipment LN;

[0121] V) The relationship between primary equipment and secondary equipment.

[0122] Specifically, based on the association relationships in 1), 2), I), II), III), IV), and V), combined with the association relationship between the secondary device itself and the secondary device LN that can be directly determined through the standardized SCD file, the association relationship between the primary device and a specific single secondary device and its LN can be determined. That is, it is possible to clearly identify which secondary device the primary device is associated with, and also to clearly identify the secondary device LN associated with the primary device. The resulting relationship between the secondary device IEDNAME and LN is shown in Table 4:

[0123] Table 4

[0124]

[0125] The table above shows a primary device with a device type of CBR and a device name of "264 Line Bay Circuit Breaker". All of its subordinate secondary devices (i.e., topologically connected devices) are:

[0126] Device 1: Measurement and control equipment. The IEDNAME of this device is C_L2201A, where "C_" indicates that the secondary device is a measurement and control device, and "L" indicates that the primary device associated with this device is a line. There are three LNs associated with the 264 line bay circuit breaker: CBCSWI1, CILO1, and MMXU. These three LNs correspond to the measurement and control device.

[0127] Device 2: Line protection device. The IEDNAME of this device is P_L2201A, where "P_" indicates that the secondary device is a protection device, and "L" indicates that the primary device associated with this device is a line. The 264 line bay circuit breaker has two associated LNs: PTRC and RREC. Both LNs correspond to the line protection device and may represent one of the following: line protection, transformer protection, busbar protection, reactor protection and control, and capacitor protection and control.

[0128] Device three: busbar protection device. The IEDNAME of this device is P_M2212A, where "P_" indicates that the secondary device is a protection device, and "M" indicates that the primary device associated with this device is the busbar. There are two LNs associated with the 264 line bay circuit breaker: PTRC8 (branch 7) and RBRF8 (branch 8). Similar to device two, these two LNs correspond to line protection devices, and may represent one of the following: line protection, transformer protection, busbar protection, reactor protection and control, and capacitor protection and control.

[0129] Device 4: Intelligent terminal device. The IEDNAME of this device is I_L2201A, where "I_" indicates that the secondary device is an intelligent terminal, and "L" indicates that the primary device associated with this device is a line. The 264 line bay circuit breaker has only one LN associated with this device, namely XCBR; this LN is the LN corresponding to the intelligent terminal.

[0130] In one embodiment of this implementation, the automatic association between the primary device and the secondary device can be ultimately achieved through the association relationship between the primary device, the secondary device associated with the primary device (including the secondary device IEDNAME), and the specific secondary device LN associated with the primary device, as shown in Table 4.

[0131] Implementation method of substation SSD file primary and secondary equipment association system

[0132] This embodiment provides a technical solution for a substation SSD file primary and secondary equipment association system, which includes a processor having executable program instructions stored therein, and the executable program instructions are used to implement the substation SSD file primary and secondary equipment association method in the above-mentioned substation SSD file primary and secondary equipment association method embodiment.

[0133] Since the specific working mode and working principle of the substation SSD file primary and secondary equipment association system of this embodiment have been described in detail in the above-mentioned substation SSD file primary and secondary equipment association method embodiment, they will not be repeated here.

[0134] It should be understood that the above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention.

Claims

1. A method for associating primary and secondary devices of a substation SSD file, characterized in that: include: Based on the bay wiring method and primary device information in the SSD file, determine the specific type of each primary device in each bay and update the primary device name accordingly; based on the secondary device IED name and device description in the SCD file, determine the secondary device in each bay; Combined with the established association rule base containing all secondary devices and LNs associated with each primary device in the entire station, as well as the primary and secondary devices in each bay, the secondary device measurement class LN associated with each primary device in the same bay is obtained. Combined with the association rule base, the primary and secondary devices in each bay, and the similarity between the updated primary device naming and the DOI standardized naming of the secondary device model in the SCD, the secondary device switch controller class LN and interlocking class LN associated with each primary device in the same bay are obtained. For a primary device of the circuit breaker type in a branch bay connected to a busbar or main transformer, determine the busbar branch or main transformer branch corresponding to the virtual terminal connection relationship of the busbar protection or main transformer protection of the bay to which the primary device belongs, and use the busbar protection LN of the corresponding busbar branch or the main transformer protection LN of the main transformer branch as the cross-bay secondary device LN associated with the primary device; The specific devices of different secondary devices associated with the primary device are distinguished through the naming of IED; The information of each secondary device and LN in the same interval and the cross-interval secondary device and LN associated with each primary device is added to the information corresponding to the primary device in the SSD file to realize the association between the primary and secondary devices in the SSD file.

2. The method for associating primary and secondary devices of a substation SSD file according to claim 1 is characterized in that: The method of establishing the association rule base includes: According to the requirements of the SCD file technical specifications and the SSD modeling project implementation technical specifications for the association of primary and secondary equipment, an association rule library containing all secondary equipment and LNs associated with each primary equipment in the entire station is established.

3. The method for associating primary and secondary devices of a substation SSD file according to claim 1, characterized in that: Based on the interval wiring method and primary device information in the SSD file, the specific type of each primary device in each interval can be determined in the following ways: According to the positional relationship between the primary equipment and the main equipment and the busbar or main transformer in the interval in the SSD file, combined with the primary equipment naming in the SSD file and the primary equipment type code in the SSD modeling project implementation technical specifications, the specific type of each primary equipment in each interval is determined.

4. The method for associating primary and secondary devices of a substation SSD file according to claim 1, characterized in that: Combining the association rule base, the primary and secondary devices in each bay, and the similarity between the updated primary device naming and the DOI standardized naming of the secondary device model in the SCD, the following methods are used to obtain the switch controller class LN and interlock class LN of the secondary device in the same bay associated with each primary device: For each bay, from all secondary devices and LNs associated with the primary devices in this bay according to the association rule base, select the switch controller class LN and interlock class LN belonging to the secondary devices in this bay; For the selected switch controller class LN belonging to the secondary equipment in this interval, calculate the similarity between the updated primary equipment name and the DOI standardized name of the secondary equipment model to which the selected switch controller class LN belongs. The switch controller class LN of the secondary equipment with the highest similarity is used as the switch controller class LN of the secondary equipment in the same interval associated with the primary equipment. For the interlocking class LN selected for the secondary equipment within this interval, calculate the similarity between the updated primary equipment name and the DOI standardized name of the secondary equipment model to which the selected interlocking class LN belongs, and use the interlocking class LN of the secondary equipment with the highest similarity as the interlocking class LN of the secondary equipment in the same interval associated with the primary equipment.

5. The method for associating primary and secondary devices of a substation SSD file according to claim 1, characterized in that: Combining the established association rule base containing all secondary devices and LNs associated with each primary device in the entire station, as well as the primary and secondary devices in each interval, the methods for obtaining the measurement class LN of the secondary devices in the same interval associated with each primary device include: For each interval, from all secondary devices and LNs associated with each primary device in this interval according to the association rule base, the measurement class LN belonging to the secondary device in this interval is selected as the measurement class LN of the secondary device in the same interval associated with the primary device.

6. The method for associating primary and secondary devices of a substation SSD file according to claim 1, characterized in that: Each primary device within each determined interval and each secondary device within each determined interval are associated with the interval to which they belong through a physical ID.

7. The method for associating primary and secondary devices of a substation SSD file according to claim 1, characterized in that: Methods for determining the busbar branch or main transformer branch corresponding to the bay to which the primary equipment belongs in the virtual terminal connection relationship of the busbar protection or main transformer protection include: If, in the virtual terminal connection relationship of the busbar protection, the electrical parameters of a certain busbar protection branch are obtained from a collection execution unit corresponding to a certain bay, then the busbar branch corresponding to the bay in the virtual terminal connection relationship of the busbar protection is determined to be the busbar protection branch; If, in the virtual terminal connection relationship of the main transformer protection, the electrical parameters of a main transformer protection branch on the high side, middle side or low side of the main transformer are taken from the acquisition execution unit corresponding to a certain interval, then the main transformer branch corresponding to the interval in the virtual terminal connection relationship of the main transformer protection is determined to be the main transformer protection branch.

8. The method for associating primary and secondary devices of a substation SSD file according to claim 1, characterized in that: The busbar protection LN of the busbar branch includes: MMXU measurement LN of busbar protection, PTRC protection trip LN and RBRF circuit breaker failure LN; The main transformer protection LN of the main transformer branch includes: MMXU measurement LN of the main transformer protection, PTRC protection trip LN and RBRF circuit breaker failure LN.

9. A substation SSD file primary and secondary equipment association system, characterized in that: It includes a processor, characterized in that the processor is used to execute a computer program to implement the steps of the substation SSD file primary and secondary equipment association method according to any one of claims 1 to 8.

Images