CN113626998A - Intelligent substation secondary system communication frame design method and system based on integrated intelligent terminal - Google Patents
Intelligent substation secondary system communication frame design method and system based on integrated intelligent terminal Download PDFInfo
- Publication number
- CN113626998A CN113626998A CN202110841244.2A CN202110841244A CN113626998A CN 113626998 A CN113626998 A CN 113626998A CN 202110841244 A CN202110841244 A CN 202110841244A CN 113626998 A CN113626998 A CN 113626998A
- Authority
- CN
- China
- Prior art keywords
- intelligent
- module
- ied
- virtual
- connection
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004891 communication Methods 0.000 title claims abstract description 46
- 238000013461 design Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 title claims abstract description 43
- 238000010586 diagram Methods 0.000 claims abstract description 20
- 238000012545 processing Methods 0.000 claims description 14
- 238000012544 monitoring process Methods 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 7
- 238000007906 compression Methods 0.000 claims description 7
- 238000013507 mapping Methods 0.000 claims description 5
- 125000006850 spacer group Chemical group 0.000 claims description 5
- 241000272814 Anser sp. Species 0.000 claims description 3
- 230000008676 import Effects 0.000 claims description 3
- 230000006870 function Effects 0.000 description 25
- 238000004590 computer program Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 4
- 230000003993 interaction Effects 0.000 description 3
- 238000004364 calculation method Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2113/00—Details relating to the application field
- G06F2113/04—Power grid distribution networks
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2119/00—Details relating to the type or aim of the analysis or the optimisation
- G06F2119/02—Reliability analysis or reliability optimisation; Failure analysis, e.g. worst case scenario performance, failure mode and effects analysis [FMEA]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention provides a method and a system for designing a communication framework of an intelligent substation secondary system based on an integrated intelligent terminal, which comprises the following steps: step S1: the method comprises the steps that given power system model design information comprises a main wiring diagram of a primary system and modeling data of the main wiring diagram; establishing a primary system of the digital substation, describing through UML and storing in a database; step S2: configuring each IED on a model of a main system, and configuring each device with an ICD file provided by a manufacturer; step S3: forming configuration information of the IED through a Common Information Model (CIM) of a main system and an ICD file; step S4: establishing a virtual terminal based on signals between virtual secondary line connection IEDs; step S5: generating an interoperation relation between IEDs configured in a power grid according to a finished secondary system signal loop, and simultaneously automatically generating an SCD file; step S6: the relationship between the device and the communication network is described by means of the functional interoperation module, and the communication network is kept consistent with the interoperation module.
Description
Technical Field
The invention relates to the technical field of power system simulation, in particular to a method and a system for designing a secondary system communication framework of an intelligent substation based on an integrated intelligent terminal.
Background
In recent years, advanced application technologies for operation and maintenance of intelligent substations have been developed, and functions based on secondary device information, such as online monitoring of secondary device states, are not clear, so that data of state information between devices is disordered, the device configuration efficiency is low, and errors are prone to occur. Substation Configuration Description (SCD) plays an important role in IEC-61850 intelligent substations.
The intelligent substation is a key component of the intelligent power grid. At present, an intelligent substation is mainly based on an IEC61850 standard, and a three-layer two-network architecture framework is adopted to realize the information digitization and high-level application functions of the substation. "three layers" refers to the device configuration of the station control layer, the spacer layer, and the process layer. Although the intelligent substation solves the problems of information sharing and the like, the early substation is not mature enough in aspects of construction concept, technical innovation, standard making and the like, and particularly, a plurality of system functions in the intelligent substation are scattered and are mainly reflected on equipment related to substation protection, measurement, control and data acquisition. With the continuous development of the intelligent substation technology, especially the application of advanced technologies such as intelligent substation operation and maintenance based on secondary equipment information, the weakness of the equipment model foundation increasingly becomes a main problem hindering the development of the intelligent technology of the substation.
Disclosure of Invention
Aiming at the defects and shortcomings in the prior art, the invention provides a method and a system for designing an intelligent substation secondary system communication framework based on an integrated intelligent terminal, analyzes the application of SCD, provides an effective solution for the intelligent substation secondary system communication based on the integrated intelligent terminal, and adopts a reliable SCD model. Based on the complete SCD model, the management of various high-level applications of the intelligent substation is realized, the information interaction efficiency is improved, and the project configuration work is simplified. By concentrating the information of each device in the process layer on one hardware platform, the optimal information interaction and protection control of the transformer substation device are realized, so that the transformer substation can provide more reasonable protection and control strategies for the power system.
The technical scheme is as follows:
a design method of an intelligent substation secondary system communication framework based on an integrated intelligent terminal is characterized by comprising the following steps:
step S1: the method comprises the steps that given power system model design information comprises a main wiring diagram of a primary system and modeling data of the main wiring diagram; establishing a primary system of a digital substation on the basis of IEC61970-CIM, describing through UML and storing in a database;
step S2: configuring each IED on a model of a main system, and configuring each device with an ICD file provided by a manufacturer;
step S3: forming configuration information of the IED through a Common Information Model (CIM) of a main system and an ICD file;
step S4: establishing a virtual terminal based on a signal between virtual secondary line connection IEDs, wherein a circuit based on the signal connection comprises: the device comprises a current circuit, a voltage circuit, a control circuit and a signal monitoring circuit;
step S5: generating an interoperation relation between IEDs configured in a power grid according to a finished secondary system signal loop, and simultaneously automatically generating an SCD file;
step S6: the relationship between the device and the communication network is described by means of the functional interoperation module, and the communication network is kept consistent with the interoperation module.
Further, in step S2, an initial IED design template is established according to the type of the device, so as to implement an original protection configuration based on the device; establishing a logical node LN instance of an initial ICD template on the basis of the protection type, wherein the LN is configured to be a data object DO; all function descriptions and DO example descriptions are enumerated, the descriptions of the examples are selected from a semantic definition database, modeling is carried out according to a relay protection application model of an IEC61850 project, and for the same protection type with different voltage levels, the voltage levels are distinguished when the protection type is established; after the protection configuration is finished, importing an ICD file provided by a manufacturer, and performing template matching; each ICD file has a template for the data type.
Furthermore, the ICD file is imported in a mode of combining the same data types, the data types of the ICD file are checked during import, and repeated data types are not imported; the initial IED design template should be associated with the ICD file of the manufacturer, the adjustment of parameters is performed in the ICD file provided by the manufacturer, and the template matching adopts an automatic or manual mode.
Further, in step S4, defining attributes related to the application of the intelligent secondary device to implement automatic association of the virtual circuit, where the defined attributes include: applied voltage class, main wiring form, spacing and protection type; device standardization is achieved by IED naming, which indicates the definition of IED name fields, including: IED information, bay information, voltage class, and bay number.
Further, in step S5, the automatic design of the logic loop in the SCD file is divided into two steps, including: and establishing a standard connection expert base and a virtual circuit connection.
The system of the intelligent substation secondary system communication frame design method based on the integrated intelligent terminal is characterized by comprising the following steps: the intelligent substation secondary system comprises a virtual terminal configuration module, a virtual terminal connection module, an intelligent equipment connection module and a function interoperation module which are connected, wherein the virtual terminal configuration module, the virtual terminal connection module, the intelligent equipment connection module and the function interoperation module are used for describing the overall configuration and structure of the intelligent substation secondary system;
the virtual terminal configuration module is used for acquiring a virtual terminal of the display device according to the ICD file, and the virtual terminal describes the function information provided by the IED;
the virtual terminal connection module is formed by drawing on the virtual terminal configuration module and is used for describing signal connection between intelligent equipment;
the function interoperation module is obtained by extracting and summarizing the signals in the virtual terminal connection module and is used for displaying the logical relationship of the intelligent equipment on the function;
the intelligent device connection module is formed according to design requirements and a communication mode.
Further, mapping the logical connection port of the virtual terminal to a specific intelligent device port through port mapping, connecting the logical topology of the intelligent substation with the intelligent device to build a relationship, and obtaining a substation communication network module according to the virtual terminal configuration module and the intelligent device connection module, wherein the substation communication network module is used for describing a communication structure of the digital substation.
Further, a standardized unit of the substation is formed by adopting the standard interval, and the standardized unit comprises: line spacing, bus spacing and transformer spacing; standardizing protection configuration on the same voltage class, the same wiring mode and the same interval type; and a fixed interval type is formed by the combination of the type of the main wiring of the transformer substation and the type of the equipment; forming corresponding standard secondary equipment virtual circuit connection templates at standard intervals; when a standard secondary virtual circuit connection library is constructed, firstly, standard secondary equipment and secondary equipment terminal information are established, and then virtual terminals are associated to form a standard interval connection library; when creating a secondary device, the added device is named according to the standard device definition IED name field, and the device has its own voltage class and device type.
Further, according to a standard connection expert library formed by national, industrial and power grid enterprise standards, designing virtual terminal connection and intelligent physical port configuration between intelligent secondary equipment is carried out, and an SCD file is generated; and matching the IED name of the equipment with standard equipment in an expert library, and designing and obtaining a virtual terminal through virtual terminal definition description and a reference address thereof according to a virtual circuit connection template of the standard secondary equipment in the expert library.
Further, in the process level, an integrated intelligent terminal IIT is constructed to replace MU and IT equipment used in the traditional intelligent substation,
the method comprises the following steps of completing information acquisition and control operation by utilizing an object-oriented general substation event GOOSE network, compressing signals acquired by the intelligent terminal, and introducing two parameters: compression factor and mean square error percentage; wherein the compression factor is defined as the ratio between the size of the original file and the size of the compressed signal:
the percentage mean square error is then defined as:
wherein ,
and
respectively an original signal and a compressed signal;
signals such as current, voltage, etc. are included in the data packet, and the flow rate of the data packet is as follows:
D＝nLmft (3)
wherein D is the data flow rate and the unit bits/sec; n is the number of merging units; l ismIs the data length, unit bit; f. oftIs the transmission frequency of the packet, in Hz;
the total communication time is calculated according to the following formula:
t＝tMU+tIED+tD (4)
wherein ,tMUProcessing time for the merge unit; t is tIEDProcessing time for the IED; t is tDIs the packet delay time;
the delay time is constructed as follows:
tD＝tG+tS+tL+tP (5)
wherein ,tGGenerating a delay for the data; t is tSA data transmission delay; t is tLDelay for transmission connection; t is tPDelay for data parsing;
the intelligent terminal is composed of four modules: the intelligent circuit breaker comprises a main processor module, a DSP comprehensive processing module, an FPGA data acquisition module and a circuit breaker intelligent control module;
in the spacer layer, station area protection, monitoring, control, fault recording, power quality and online monitoring are realized through different discrete devices.
An electronic device comprising a memory, a processor and a computer program stored on the memory and operable on the processor, wherein the processor implements the steps of the method for analyzing the design method of the intelligent substation secondary system communication framework based on the integrated intelligent terminal when executing the program.
A non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the method for analyzing an integrated intelligent terminal based intelligent substation secondary system communication framework design method as described above.
Compared with the prior art, the invention and the optimal scheme thereof adopt the reliable SCD model, realize the management of various high-level applications of the intelligent substation based on the complete SCD model, improve the information interaction efficiency and simplify the engineering configuration work:
1. according to a secondary system signal loop, a design system automatically generates an interoperation relation between IEDs configured in a power grid, and simultaneously automatically generates an SCD file, and describes a relation between equipment and a communication network by using a functional interoperation module.
2. The IIT is divided into functional modules such as a merging unit and an intelligent terminal according to specific logic functions. The IIT adopts a high-performance general hardware platform, can be flexibly configured according to different functions, and meets corresponding functional requirements, such as line protection, capacitor protection, transformer protection and the like.
3. In the spacer layer, the functions of station area protection, monitoring, control, fault recording, power quality, online detection and the like are realized through different discrete devices.
Drawings
The invention is described in further detail below with reference to the following figures and detailed description:
FIG. 1 is a schematic diagram of a secondary system design flow according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating relationships among modules of a secondary system according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a method for matching an initial ICD file with a manufacturer ICD file according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a method for constructing a secondary circuit connection library according to an embodiment of the present invention;
fig. 5 is a simplified communication system structure diagram according to an embodiment of the present invention.
Detailed Description
In order to make the features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail as follows:
the embodiment provides a design method of an intelligent substation secondary system communication framework based on an integrated intelligent terminal and a design method of the system, wherein the design method comprises the following steps:
step S1: and (4) giving power system model design information, including a main wiring diagram of a primary system and modeling data thereof. A primary system of a digital substation is established on the basis of IEC61970-CIM, and is described by UML (unified Modeling language) and stored in a database.
Step S2: each IED is configured on a model of the primary system. Each device has an ICD file provided by the manufacturer.
Step S3: IED configuration information is formed through a main system and an ICD file Common Information Model (CIM).
Step S4: and establishing a virtual terminal based on signals between the virtual secondary line connection IEDs. The signal connections are based on conventional circuits such as current circuits, voltage circuits, control circuits and signal monitoring circuits.
Step S5: according to the finished secondary system signal loop, the design system automatically generates the interoperation relation between IEDs configured in the power grid, and simultaneously automatically generates an SCD file.
Step S6: the relationship between the device and the communication network is described by means of the functional interoperation module, and the communication network is kept consistent with the interoperation module. The design flow is shown in fig. 1.
The entire design process is explained with four modules: the system comprises a virtual terminal configuration module, a virtual terminal connection module, an intelligent device connection module and a function interoperation module. The four modules are mainly drawn by AutoCAD software, and the overall configuration and structure of the secondary system of the intelligent substation are described. The module relationships are shown in fig. 2.
And displaying the virtual terminal of the equipment through the virtual terminal configuration module. The virtual terminal describes a function information provided by the IED. And the virtual terminal configuration module automatically obtains the configuration information according to the ICD file.
And drawing a virtual terminal connection module on the virtual terminal configuration module according to the realization of different functions. The virtual terminal connection module describes signal connections between the intelligent devices.
The functional interoperation module is obtained by extracting and summarizing the signals in the virtual terminal connection module, and displays the logical relationship of the intelligent equipment in function.
And forming an intelligent equipment connection module of the intelligent substation according to the design requirement and the communication mode.
In the embodiment, the logical connection port of the virtual terminal is mapped to a specific intelligent device port through port mapping, and the logical topology of the digital substation is connected with the intelligent device. And meanwhile, obtaining a transformer substation communication network module according to the virtual terminal configuration module and the intelligent equipment connection module. It describes the communication structure of a digital substation.
The embodiment establishes an initial IED design template according to the type of the device, and realizes the original protection configuration of the device based on the current mainstream manufacturer.
A Logical Node (LN) instance of an initial ICD template is established on the basis of the protection type, the LN configured as a Data Object (DO).
Enumerate all functional descriptions and DO instance descriptions. The descriptions of the examples are selected from a semantic definition database and modeled according to a relay protection application model of an IEC61850 project. For the same protection type with different voltage grades, the voltage grades are distinguished when the protection type is established.
And after the protection configuration is finished, importing an ICD file provided by a manufacturer for template matching. Each ICD file has a template for the data type. The ICD file is generally imported in a manner of merging the same data types. At import time, the design system will check the data type of the ICD file. Duplicate data types need not be imported.
The initial IED design template should be associated with the manufacturer's ICD file. The adjustment of the parameters is performed in an ICD file provided by the manufacturer. The template matching adopts an automatic or manual mode, and the automatic matching of the same ICD file can be realized as long as one ICD file completes the manual matching. This process is illustrated in fig. 3.
In this embodiment, the standard connection expert library formed according to the relevant standards of the country, industry, and power grid enterprise realizes automatic design of virtual terminal connection and intelligent configuration of physical ports between intelligent secondary devices, and generates the SCD file.
The automatic design of the logic loop in the SCD file is divided into two steps: and establishing a standard connection expert base and a virtual circuit connection.
Attributes of the intelligent secondary device related to its application are defined to enable automatic association of the virtual circuit. The defined attributes include the voltage level of the application, the main wiring form, the spacing and the protection type. Device standardization is achieved by IED naming. The naming of the IED indicates the definition of the IED name field, which includes: IED information, bay information, voltage class, bay number, etc.
The substation is composed of different standard bays. The bay can be regarded as a standardized unit constituting a substation, and mainly includes a line pitch, a bus bar pitch, a transformer pitch, and the like. The configuration of the secondary system differs depending on the voltage or the interval. And standardizing protection configuration for the same voltage class, the same wiring mode and the same interval type.
The general type of partitioning of interval protection requires two levels to be considered. The transformer substation main wiring type and the equipment type are adopted. Depending on the voltage class, substation capacity and importance in the system, the main wiring includes three main wiring modes: double bus connection mode, single bus connection mode and single half connection mode. These two dimensions can be freely combined to form a fixed type of spacing.
The secondary information flow is mainly among the equipment for interval protection, the monitoring control equipment, the merging unit and the intelligent terminal, and basically no information flow exists among other interval equipment. Taking a standard interval as an example, a corresponding standard secondary device virtual circuit connection template may be formed.
When a standard secondary virtual circuit connection library is constructed, firstly, standard secondary equipment and secondary equipment terminal information are established, and then virtual terminals are associated to form a standard interval connection library. The construction process is shown in FIG. 4.
The present embodiment considers that in engineering design, when creating a secondary device, the added device is named according to the standard device definition IED name field, and the device has its own voltage class and device type. By adding the IED name of the device, it is matched with the standard device in the expert library. And automatically designing the virtual terminal according to the virtual circuit connection template of the standard secondary equipment in the expert library and through the definition description and the reference address of the virtual terminal.
In a conventional intelligent substation, an Intelligent Terminal (IT) and a Merging Unit (MU) are the main devices of the process layer. IT is used for device status acquisition and remote command execution. The MU is mainly used for digital merging, processing and protocol conversion functions.
In the embodiment, by means of integrated design, an Integrated Intelligent Terminal (IIT) is constructed in a process layer to replace MU and IT equipment used in a traditional intelligent substation. The IIT is installed near the host device and can obtain information required by the host device.
The intelligent substation utilizes a generic substation event (GOOSE) network oriented to the object to complete information acquisition and control operations. Compressing the signal acquired by the intelligent terminal, and introducing two parameters for evaluating the compression effect: compression factor and mean square error percentage. The compression factor is defined as the ratio between the size of the original file and the size of the compressed signal:
and the percentage of mean square error is defined as:
wherein ,
and
respectively, the original signal and the compressed signal.
Signals such as current, voltage, etc. are included in the data packet, and the flow rate of the data packet is as follows:
D＝nLmft (3)
wherein D is the data flow rate and the unit bits/sec; n is the number of merging units; l ismIs the data length, unit bit; f. oftIs the transmission frequency of the packet in Hz.
The total communication time is calculated according to the following formula:
t＝tMU+tIED+tD (4)
wherein ,tMUProcessing time for the merge unit; t is tIEDProcessing time for the IED; t is tDIs the packet delay time.
The delay time is constructed as follows:
tD＝tG+tS+tL+tP (5)
wherein ,tGGenerating a delay for the data; t is tSA data transmission delay; t is tLDelay for transmission connection; t is tPThe delay is parsed for the data.
The IIT is divided into functional modules such as a merging unit and an intelligent terminal according to specific logic functions. Due to the integrated design of software and hardware configuration, the IIT consists of four main modules: the intelligent circuit breaker comprises a main processor module, a DSP comprehensive processing module, an FPGA data acquisition module and an intelligent circuit breaker control module. The IIT adopts a high-performance general hardware platform, can be flexibly configured according to different functions, and meets corresponding functional requirements, such as line protection, capacitor protection, transformer protection and the like.
In the spacer layer, the functions of station area protection, monitoring, control, fault recording, power quality, online monitoring and the like are realized through different discrete devices.
The station layer mainly provides a human-computer contact interface, and forms the operation control and management functions of all equipment of the transformer substation. A simplified communication system is shown in fig. 5.
The above system and method provided by this embodiment can be stored in a computer readable storage medium in a coded form, and implemented in a computer program, and inputs basic parameter information required for calculation through computer hardware, and outputs a calculation result.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the above embodiments, those of ordinary skill in the art should understand that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
The present invention is not limited to the above-mentioned preferred embodiments, and any person can derive other various types of methods and systems for designing the secondary system communication framework of the intelligent substation based on the integrated intelligent terminal according to the teaching of the present invention.
Claims (10)
1. A design method of an intelligent substation secondary system communication framework based on an integrated intelligent terminal is characterized by comprising the following steps:
step S1: the method comprises the steps that given power system model design information comprises a main wiring diagram of a primary system and modeling data of the main wiring diagram; establishing a primary system of a digital substation on the basis of IEC61970-CIM, describing through UML and storing in a database;
step S2: configuring each IED on a model of a main system, and configuring each device with an ICD file provided by a manufacturer;
step S3: forming configuration information of the IED through a Common Information Model (CIM) of a main system and an ICD file;
step S4: establishing a virtual terminal based on a signal between virtual secondary line connection IEDs, wherein a circuit based on the signal connection comprises: the device comprises a current circuit, a voltage circuit, a control circuit and a signal monitoring circuit;
step S5: generating an interoperation relation between IEDs configured in a power grid according to a finished secondary system signal loop, and simultaneously automatically generating an SCD file;
step S6: the relationship between the device and the communication network is described by means of the functional interoperation module, and the communication network is kept consistent with the interoperation module.
2. The intelligent substation secondary system communication framework design method based on the integrated intelligent terminal according to claim 1, characterized in that: in step S2, an initial IED design template is established according to the type of the device, so as to implement an original protection configuration based on the device; establishing a logical node LN instance of an initial ICD template on the basis of the protection type, wherein the LN is configured to be a data object DO; all function descriptions and DO example descriptions are enumerated, the descriptions of the examples are selected from a semantic definition database, modeling is carried out according to a relay protection application model of an IEC61850 project, and for the same protection type with different voltage levels, the voltage levels are distinguished when the protection type is established; after the protection configuration is finished, importing an ICD file provided by a manufacturer, and performing template matching; each ICD file has a template for the data type.
3. The intelligent substation secondary system communication framework design method based on the integrated intelligent terminal according to claim 2, is characterized in that: the ICD file is imported in a mode of combining the same data types, the data types of the ICD file are checked during import, and repeated data types are not imported; the initial IED design template should be associated with the ICD file of the manufacturer, the adjustment of parameters is performed in the ICD file provided by the manufacturer, and the template matching adopts an automatic or manual mode.
4. The intelligent substation secondary system communication framework design method based on the integrated intelligent terminal according to claim 1, characterized in that: in step S4, defining attributes of the smart secondary device related to its application to implement automatic association of the virtual circuit, the defined attributes including: applied voltage class, main wiring form, spacing and protection type; device standardization is achieved by IED naming, which indicates the definition of IED name fields, including: IED information, bay information, voltage class, and bay number.
5. The intelligent substation secondary system communication framework design method based on the integrated intelligent terminal according to claim 1, characterized in that: in step S5, the automatic design of the logic loop in the SCD file is divided into two steps, including: and establishing a standard connection expert base and a virtual circuit connection.
6. The system for designing the communication framework of the intelligent substation secondary system based on the integrated intelligent terminal according to the claim 1, is characterized by comprising the following steps: the intelligent substation secondary system comprises a virtual terminal configuration module, a virtual terminal connection module, an intelligent equipment connection module and a function interoperation module which are connected, wherein the virtual terminal configuration module, the virtual terminal connection module, the intelligent equipment connection module and the function interoperation module are used for describing the overall configuration and structure of the intelligent substation secondary system;
the virtual terminal configuration module is used for acquiring a virtual terminal of the display device according to the ICD file, and the virtual terminal describes the function information provided by the IED;
the virtual terminal connection module is formed by drawing on the virtual terminal configuration module and is used for describing signal connection between intelligent equipment;
the function interoperation module is obtained by extracting and summarizing the signals in the virtual terminal connection module and is used for displaying the logical relationship of the intelligent equipment on the function;
the intelligent device connection module is formed according to design requirements and a communication mode.
7. The system of the design method of the intelligent substation secondary system communication framework based on the integrated intelligent terminal according to claim 6, is characterized in that: and mapping the logical connection port of the virtual terminal to a specific intelligent equipment port through port mapping, connecting the logical topology of the intelligent substation with the intelligent equipment to establish contact, and obtaining a substation communication network module for describing the communication structure of the digital substation according to the virtual terminal configuration module and the intelligent equipment connection module.
8. The system of the design method of the intelligent substation secondary system communication framework based on the integrated intelligent terminal according to claim 6, is characterized in that: adopt standard interval to constitute the standardized unit of transformer substation, include: line spacing, bus spacing and transformer spacing; standardizing protection configuration on the same voltage class, the same wiring mode and the same interval type; and a fixed interval type is formed by the combination of the type of the main wiring of the transformer substation and the type of the equipment; forming corresponding standard secondary equipment virtual circuit connection templates at standard intervals; when a standard secondary virtual circuit connection library is constructed, firstly, standard secondary equipment and secondary equipment terminal information are established, and then virtual terminals are associated to form a standard interval connection library; when creating a secondary device, the added device is named according to the standard device definition IED name field, and the device has its own voltage class and device type.
9. The system of the design method of the intelligent substation secondary system communication framework based on the integrated intelligent terminal according to claim 6, is characterized in that: designing virtual terminal connection and intelligent physical port configuration between intelligent secondary equipment according to a standard connection expert library formed by national, industrial and power grid enterprise standards to generate an SCD file; and matching the IED name of the equipment with standard equipment in an expert library, and designing and obtaining a virtual terminal through virtual terminal definition description and a reference address thereof according to a virtual circuit connection template of the standard secondary equipment in the expert library.
10. The system of the design method of the intelligent substation secondary system communication framework based on the integrated intelligent terminal according to claim 6, is characterized in that: in the process level, an integrated intelligent terminal IIT is constructed to replace MU and IT equipment used in the traditional intelligent substation,
the method comprises the following steps of completing information acquisition and control operation by utilizing an object-oriented general substation event GOOSE network, compressing signals acquired by the intelligent terminal, and introducing two parameters: compression factor and mean square error percentage; wherein the compression factor is defined as the ratio between the size of the original file and the size of the compressed signal:
the percentage mean square error is then defined as:
wherein ,
and
respectively an original signal and a compressed signal;
signals such as current, voltage, etc. are included in the data packet, and the flow rate of the data packet is as follows:
D＝nLmft (3)
wherein D is the data flow rate and the unit bits/sec; n is the number of merging units; l ismIs the data length, unit bit; f. oftIs the transmission frequency of the packet, in Hz;
the total communication time is calculated according to the following formula:
t＝tMU+tIED+tD (4)
wherein ,tMUProcessing time for the merge unit; t is tIEDProcessing time for the IED; t is tDIs the packet delay time;
the delay time is constructed as follows:
tD＝tG+tS+tL+tP (5)
wherein ,tGGenerating a delay for the data; t is tSA data transmission delay; t is tLDelay for transmission connection; t is tPDelay for data parsing;
the intelligent terminal is composed of four modules: the intelligent circuit breaker comprises a main processor module, a DSP comprehensive processing module, an FPGA data acquisition module and a circuit breaker intelligent control module;
in the spacer layer, station area protection, monitoring, control, fault recording, power quality and online monitoring are realized through different discrete devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110841244.2A CN113626998B (en) | 2021-07-23 | 2021-07-23 | Intelligent substation secondary system communication framework design method and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110841244.2A CN113626998B (en) | 2021-07-23 | 2021-07-23 | Intelligent substation secondary system communication framework design method and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113626998A true CN113626998A (en) | 2021-11-09 |
| CN113626998B CN113626998B (en) | 2023-08-04 |
Family
ID=78380968
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110841244.2A Active CN113626998B (en) | 2021-07-23 | 2021-07-23 | Intelligent substation secondary system communication framework design method and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113626998B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105095600A (en) * | 2015-09-01 | 2015-11-25 | 国网天津市电力公司 | Intelligent substation and regulation and control center coordinative modeling method |
| CN106372301A (en) * | 2016-08-29 | 2017-02-01 | 西电通用电气自动化有限公司 | Method and system for detecting visualization and configuration consistency of configuration file of intelligent substation |
| CN107147688A (en) * | 2017-03-17 | 2017-09-08 | 中国电力科学研究院 | A kind of system configuration utility and the two-way check interactive approach of model cloud system and system |
| JP6279703B1 (en) * | 2016-09-29 | 2018-02-14 | 北京東土科技股▲ふん▼有限公司Ｋｙｌａｎｄ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｔｄ． | Software definition realization method based on protection control system of smart substation |
| CN112949228A (en) * | 2021-03-09 | 2021-06-11 | 南京南瑞继保电气有限公司 | Automatic SCD file configuration method and device for intelligent substation |
-
2021
- 2021-07-23 CN CN202110841244.2A patent/CN113626998B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105095600A (en) * | 2015-09-01 | 2015-11-25 | 国网天津市电力公司 | Intelligent substation and regulation and control center coordinative modeling method |
| CN106372301A (en) * | 2016-08-29 | 2017-02-01 | 西电通用电气自动化有限公司 | Method and system for detecting visualization and configuration consistency of configuration file of intelligent substation |
| JP6279703B1 (en) * | 2016-09-29 | 2018-02-14 | 北京東土科技股▲ふん▼有限公司Ｋｙｌａｎｄ Ｔｅｃｈｎｏｌｏｇｙ Ｃｏ．， Ｌｔｄ． | Software definition realization method based on protection control system of smart substation |
| CN107147688A (en) * | 2017-03-17 | 2017-09-08 | 中国电力科学研究院 | A kind of system configuration utility and the two-way check interactive approach of model cloud system and system |
| CN112949228A (en) * | 2021-03-09 | 2021-06-11 | 南京南瑞继保电气有限公司 | Automatic SCD file configuration method and device for intelligent substation |
Non-Patent Citations (1)
| Title |
|---|
| 王轩;杨文丽;汪凤月;李惠民;王乐挺;高云生;钱春;: "智能变电站中SCD管控系统的研究", 电网与清洁能源, no. 02 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113626998B (en) | 2023-08-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2017036244A1 (en) | Digital simulation system of power distribution network | |
| CN102521398B (en) | Modeling method for substation-dispatching center two-level distributed type power grid | |
| CN102929911B (en) | Substation and scheduling station method of integrated modeling | |
| CN105117532B (en) | A kind of modeling method of secondary equipment of intelligent converting station interval information model | |
| CN106130185B (en) | A kind of monitoring system of electric substation modeling method based on status monitoring information | |
| CN102622463A (en) | Drawing-model uniformity based method for automatic check of design drawings | |
| CN102723775A (en) | Reliability assessment method for secondary system of intelligent substation | |
| CN111625964B (en) | Method, system and equipment for constructing transformer substation graph model based on logical relationship | |
| CN104463696A (en) | Power grid operating risk recognition and prevention method and system | |
| CN108054719A (en) | Intelligent substation networking secondary circuit modeling method and method for diagnosing faults | |
| CN103455554A (en) | Intelligent power distribution network model base system | |
| CN102403718A (en) | Generating method for power grid topological relationship based on Arcgis | |
| CN112328323B (en) | Relay protection device capability description file generation system | |
| CN101364733A (en) | Electric power digital integrated management system | |
| CN110766263A (en) | Automatic acceptance method for secondary equipment of transformer substation and terminal equipment | |
| CN106355298A (en) | Intelligent watt-hour meter reliability prediction cloud service platform | |
| CN115643316A (en) | Data processing method and device for Internet of things gateway, gateway equipment and storage medium | |
| CN108388704A (en) | Intelligent distribution area extension modeling based on CIM and integrated platform construction method | |
| CN111062110A (en) | CIM-based method for rapidly constructing transformer substation model and generating in-station wiring diagram by using interval template | |
| CN113626998B (en) | Intelligent substation secondary system communication framework design method and system | |
| CN112910086A (en) | Intelligent substation data verification method and system | |
| CN109687985B (en) | Automatic configuration method and system for process level network of transformer substation | |
| CN114417633B (en) | Network shooting range scene construction method and system based on parallel simulation six-tuple | |
| CN110209722A (en) | A kind of data-interface for data exchange | |
| CN104732449A (en) | Method for establishing operation mode model of information system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |