CN114268675B - Communication method and system based on IEC61850 model and electronic equipment - Google Patents
Communication method and system based on IEC61850 model and electronic equipmentInfo
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Abstract
The application provides a communication method, a communication system and electronic equipment based on an IEC61850 model, which have the advantages of high efficiency in communication data analysis, high network utilization rate and safe and reliable output and transmission. The method comprises the following steps: constructing a device tree diagram model according to the IEC61850 model file corresponding to the target device; when the target device is in a communication sending state, determining data to be sent according to the device tree diagram model; encoding the data to be transmitted according to an ANS.1 encoding and decoding rule, generating first protocol information and transmitting the first protocol information; when the target device is in a communication receiving state, receiving second protocol information; and analyzing the second protocol information according to the ANS.1 coding and decoding rule, determining request data corresponding to the second protocol information, and responding to the request data. The system comprises a device tree diagram construction module, a communication sending module and a communication receiving module. The electronic equipment is used for executing the communication method based on the IEC61850 model.
Description
Technical Field
One or more embodiments of the present application relate to the technical field of power system automation, and in particular, to a communication method, a system and an electronic device based on an IEC61850 model.
Background
With the wide application of IEC61850 standard in domestic substations, an object-oriented scheme is adopted to manage the whole digital substation, great convenience is brought to engineering construction and debugging, but because the device is in different scenes, the requirements on functions are different, and IEC61850-7-2 proposes various functions required by the substation to form an ACSI service function set, and interaction and interoperation of model information can be realized through various protocol mapping. At present, various services of ACSI are mapped to MMS communication protocol through SCSM, because MMS is more complicated in coding and adopts TCP transmission, network utilization rate is lower, and MMS adopts TLV format framing coding, MMS is easy to attack by network abnormal MMS message, thereby causing unsafe factors, therefore, new communication protocol needs to be developed on the premise of unchanged IEC61850 model, and safer and more efficient device interconnection is satisfied.
Disclosure of Invention
In view of the above, one or more embodiments of the present application are directed to a communication method, system and electronic device based on IEC61850 model, so as to solve the problems of low network utilization and poor data security.
With the above object in view, in a first aspect one or more embodiments of the present application provide a communication method based on the IEC61850 model, comprising:
constructing a device tree diagram model for a target device according to an IEC61850 model file corresponding to the target device;
Determining data to be transmitted according to the device tree graph model when the target device is in a communication transmission state;
encoding the data to be transmitted according to an ANS.1 encoding and decoding rule, generating first protocol information, and transmitting the protocol information to be transmitted to a corresponding communication opposite terminal device of the target device;
Receiving second specification information in response to the target device being in a communication reception state;
and analyzing the second protocol information according to the ANS.1 coding and decoding rule, determining request data corresponding to the second protocol information, and responding to the request data.
Optionally, the building a device tree graph model for the target device according to the IEC61850 model file corresponding to the target device includes:
determining a hierarchical logic relationship among logic equipment, logic nodes, data objects and data attributes in the target device according to the IEC61850 model file;
constructing the device tree graph model according to the hierarchical logic relationship;
In the plant tree graph model, the data objects are built as linear hash table structures.
Optionally, the encoding the data to be sent according to an ans.1 codec rule, generating first protocol information includes:
Determining a request service corresponding to the data to be sent, and determining a first service code according to the request service;
Encoding the data to be transmitted according to the ANS.1 encoding and decoding rule, and determining a first service data unit corresponding to the data to be transmitted;
The first service code is combined with the first service data unit to generate the first specification information.
Optionally, the analyzing the second protocol information according to the ans.1 codec rule, determining request data corresponding to the second protocol information, and responding to the request data includes:
determining a service function set of the target device according to the device data model;
Extracting and determining a second service code from the second protocol information, and determining a service function corresponding to the second service code in the service function set;
Determining a second service data unit according to the second protocol information, analyzing the second service data unit according to the ANS.1 coding and decoding rule, and determining the request data;
and calling the service function to respond to the request data.
Optionally, the method further comprises:
Determining a plurality of subscribers and subscription item information of the target device in response to the target device being in a communication subscription state;
And determining corresponding information to be distributed of the subscription item information according to the device tree diagram model, and sending the information to be distributed to the subscriber.
Optionally, the transmission layer of the target equipment communication network adopts a user datagram protocol to perform data transmission.
Optionally, the method further comprises:
The target equipment performs serial number authentication verification on the first protocol information and the second protocol information;
The target equipment communication network performs communication link testing at an application layer;
the target equipment communication network performs network security authentication at a network layer.
Optionally, the target equipment communication network performs a communication link test at an application layer, including:
The test code of the communication link test is determined according to the ans.1 codec rule.
With the above object in view, in a second aspect one or more embodiments of the present application provide a communication system based on the IEC61850 model, comprising:
the device tree diagram construction module is used for constructing a device tree diagram model for the target device according to the IEC61850 model file corresponding to the target device;
The communication sending module is used for determining data to be sent according to the device tree graph model when the target device is in a communication sending state;
The communication sending module is further configured to encode the data to be sent according to an ans.1 codec rule, generate first protocol information, and send the protocol information to be sent to a communication peer device corresponding to the target device;
And a communication receiving module for receiving second protocol information in response to the target device being in a communication receiving state;
The communication receiving module is further configured to parse the second protocol information according to the ans.1 codec rule, determine request data corresponding to the second protocol information, and respond to the request data.
In view of the above object, in a third aspect, one or more embodiments of the present application provide a communication electronic device based on the IEC61850 model, including a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the communication method based on the IEC61850 model according to the first aspect when executing the program.
From the foregoing, it can be seen that one or more embodiments of the present application provide a communication method, system and electronic device based on the IEC61850 model, which have the following beneficial technical effects:
(1) And creating a device tree diagram model according to the IEC61850 model file and configuration file data of the target device, wherein the device tree diagram model comprehensively covers corresponding logic level data of the target device, and the device tree diagram model is used for conveniently and accurately analyzing the data in a high-efficiency manner. When the target device transmits and receives communication, the data is subjected to frame decoding and framing by adopting an ANS.1 coding and decoding rule, so that the consistency of communication data formats is ensured, the target device corresponds to object-oriented structured data of intelligent electronic equipment of a digital transformer substation, the NS.1 coding and decoding mode can realize perfect restoration of structural relation of the structured data in network transmission, and the effectiveness and accuracy of data transmission are ensured.
(2) The UDP protocol is used by the communication network transmission layer of the target device, and the high-efficiency and safe transmission of network data can be ensured by matching with the receiving and transmitting serial numbers and the network verification in the Test link Test frame and the APDU of the application layer.
Drawings
In order to more clearly illustrate one or more embodiments of the present application or the prior art solutions, the following description will briefly describe the drawings used in the embodiments or the prior art descriptions, and it should be apparent that the drawings in the following description are only one or more embodiments of the present application and that other drawings can be obtained according to these drawings without inventive effort to those skilled in the art.
FIG. 1 is a schematic diagram of a communication method based on an IEC61850 model according to one or more embodiments of the present application;
FIG. 2 is a schematic diagram of a communication sending method in a communication method based on an IEC61850 model according to one or more embodiments of the present application;
FIG. 3 is a schematic diagram of a communication receiving method in a communication method based on an IEC61850 model according to one or more embodiments of the present application;
FIG. 4 is a schematic diagram of a communication system based on an IEC61850 model according to one or more embodiments of the present application;
Fig. 5 is a schematic diagram of a communication electronic device based on an IEC61850 model according to one or more embodiments of the present application.
Detailed Description
For the purposes of promoting an understanding of the principles and advantages of the disclosure, reference will now be made to the embodiments illustrated in the drawings and specific language will be used to describe the same.
It is noted that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present application should be given the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of the terms "first," "second," and the like in one or more embodiments of the present application does not denote any order, quantity, or importance, but rather the terms "first," "second," and the like are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that elements or items preceding the word are included in the element or item listed after the word and equivalents thereof, but does not exclude other elements or items. The terms "connected" or "connected," and the like, are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", etc. are used merely to indicate relative positional relationships, which may also be changed when the absolute position of the object to be described is changed.
The technical scheme of the application is described below with reference to specific embodiments.
In one aspect, an alternative embodiment of the application provides a communication method based on the IEC61850 model.
As shown in fig. 1, a communication method based on an IEC61850 model provided in one or more alternative embodiments of the present application includes:
S1: and constructing a device tree diagram model for the target device according to the IEC61850 model file corresponding to the target device.
In some alternative embodiments, a hierarchical logical relationship between logical devices (Logic Devie, LD), logical nodes (Logic Node, LN), data Objects (DO), and Data Attributes (DA) in the target device IED may be determined from the IEC61850 model file.
And constructing the device tree graph model according to the hierarchical logic relationship.
In the plant tree graph model, the data objects are built as linear hash table structures. The data object is stored by adopting a binary file, so that the data output analysis is convenient.
S2: and determining the communication state of the security device.
S3: and determining data to be transmitted according to the device tree graph model when the target device is in a communication transmission state.
S4: encoding the data to be transmitted according to an ANS.1 encoding and decoding rule, generating first protocol information, and transmitting the protocol information to be transmitted to a corresponding communication opposite terminal device of the target device;
s5: second specification information is received in response to the target device being in a communication reception state.
S6: and analyzing the second protocol information according to the ANS.1 coding and decoding rule, determining request data corresponding to the second protocol information, and responding to the request data.
The communication transmission state and the communication reception state of the target device are not mutually exclusive, and data may be transmitted while data is received.
And creating a device tree diagram model according to the IEC61850 model file and configuration file data of the target device, wherein the device tree diagram model comprehensively covers corresponding logic level data of the target device, and the device tree diagram model is used for conveniently and accurately analyzing the data in a high-efficiency manner. When the target device transmits and receives communication, the data is subjected to frame decoding and framing by adopting an ANS.1 coding and decoding rule, so that the consistency of communication data formats is ensured, the target device corresponds to object-oriented structured data of intelligent electronic equipment of a digital transformer substation, the NS.1 coding and decoding mode can realize perfect restoration of structural relation of the structured data in network transmission, and the effectiveness and accuracy of data transmission are ensured.
As shown in fig. 2, in a communication method based on the IEC61850 model according to one or more alternative embodiments of the present application, the encoding the data to be transmitted according to an ans.1 codec rule generates first protocol information, including:
S201: determining a request service corresponding to the data to be sent, and determining a first service code according to the request service;
S202: encoding the data to be transmitted according to the ANS.1 encoding and decoding rule, and determining a first service data unit corresponding to the data to be transmitted;
S203: the first service code is combined with the first service data unit to generate the first specification information.
As shown in fig. 3, in a communication method based on the IEC61850 model according to one or more alternative embodiments of the present application, the parsing the second protocol information according to the ans.1 codec rule, determining request data corresponding to the second protocol information, and responding to the request data includes:
S301: a set of service functions (Abstract Communication SERIVICE INTERFACE, ACSI) for the target device is determined from the device data model.
S302: extracting and determining a second service code from the second protocol information (APDU), and determining a service function (ASDU) corresponding to the second service code in the service function set;
S303: determining a second service data unit according to the second protocol information, analyzing the second service data unit according to the ANS.1 coding and decoding rule, and determining the request data;
s304: and calling the service function to respond to the request data.
The communication method based on the IEC61850 model provided by one or more optional embodiments of the application further comprises the following steps:
Determining a plurality of subscribers and subscription item information of the target device in response to the target device being in a communication subscription state;
And determining corresponding information to be distributed of the subscription item information according to the device tree diagram model, and sending the information to be distributed to the subscriber.
The communication subscription state of the target device has no mutual exclusion relation with the communication receiving state and the communication sending state.
In a communication method based on the IEC61850 model provided in one or more alternative embodiments of the present application, the transmission layer of the target equipment communication network uses a user datagram (User Datagram Protocol, UDP) protocol to perform data transmission. In some alternative embodiments, in cooperation with the UDP protocol of the transport layer, test link Test may be performed at the application layer, and logic judgment such as authentication and network verification may be performed on the sequence numbers received and transmitted in the APDU. The test code for the communication link test at the application layer is determined according to the ans.1 codec rule, for example, BER codec, DER codec, and PER codec in the ans.1 rule base may be selected. Different network ports may be tested using different codecs.
It should be noted that the method of the embodiments of the present disclosure may be performed by a single device, such as a computer or a server. The method of the embodiment can also be applied to a distributed scene, and is completed by mutually matching a plurality of devices. In the case of such a distributed scenario, one of the devices may perform only one or more steps of the methods of embodiments of the present disclosure, the devices interacting with each other to accomplish the methods.
It should be noted that the foregoing describes some embodiments of the present disclosure. Other embodiments are within the scope of the following claims. In some cases, the actions or steps recited in the claims may be performed in a different order than in the embodiments described above and still achieve desirable results. In addition, the processes depicted in the accompanying figures do not necessarily require the particular order shown, or sequential order, to achieve desirable results. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.
Based on the same inventive concept, the disclosure also provides a communication device based on an IEC61850 model, corresponding to the method of any embodiment.
Referring to fig. 4, the IEC61850 model-based communication apparatus includes:
The device tree diagram construction module 401 is configured to construct a device tree diagram model for a target device according to an IEC61850 model file corresponding to the target device;
A communication sending module 402, configured to determine, when the target device is in a communication sending state, data to be sent according to the device tree graph model;
the communication sending module 402 is further configured to encode the data to be sent according to an ans.1 codec rule, generate first protocol information, and send the protocol information to be sent to a corresponding communication peer device of the target device;
And a communication receiving module 403, configured to receive second protocol information in response to the target device being in a communication receiving state;
The communication receiving module 403 is further configured to parse the second protocol information according to the ans.1 codec rule, determine request data corresponding to the second protocol information, and respond to the request data.
For convenience of description, the above devices are described as being functionally divided into various modules, respectively. Of course, the functions of the various modules may be implemented in the same one or more pieces of software and/or hardware when implementing the present disclosure.
The device of the foregoing embodiment is configured to implement the corresponding IEC61850 model-based communication method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.
Based on the same inventive concept, the present disclosure also provides an electronic device corresponding to the method of any embodiment, including a memory, a processor, and a computer program stored on the memory and capable of running on the processor, where the processor implements the communication method based on the IEC61850 model according to any embodiment when executing the program.
Fig. 5 shows a more specific hardware architecture of an electronic device according to this embodiment, where the device may include: a processor 1010, a memory 1020, an input/output interface 1030, a communication interface 1040, and a bus 1050. Wherein processor 1010, memory 1020, input/output interface 1030, and communication interface 1040 implement communication connections therebetween within the device via a bus 1050.
The processor 1010 may be implemented by a general-purpose CPU (Central Processing Unit ), a microprocessor, an Application SPECIFIC INTEGRATED Circuit (ASIC), or one or more integrated circuits, etc. for executing related programs to implement the technical solutions provided in the embodiments of the present disclosure.
The Memory 1020 may be implemented in the form of ROM (Read Only Memory), RAM (Random Access Memory ), static storage, dynamic storage, etc. Memory 1020 may store an operating system and other application programs, and when the embodiments of the present specification are implemented in software or firmware, the associated program code is stored in memory 1020 and executed by processor 1010.
The input/output interface 1030 is used to connect with an input/output module for inputting and outputting information. The input/output module may be configured as a component in a device (not shown) or may be external to the device to provide corresponding functionality. Wherein the input devices may include a keyboard, mouse, touch screen, microphone, various types of sensors, etc., and the output devices may include a display, speaker, vibrator, indicator lights, etc.
Communication interface 1040 is used to connect communication modules (not shown) to enable communication interactions of the present device with other devices. The communication module may implement communication through a wired manner (such as USB, network cable, etc.), or may implement communication through a wireless manner (such as mobile network, WIFI, bluetooth, etc.).
Bus 1050 includes a path for transferring information between components of the device (e.g., processor 1010, memory 1020, input/output interface 1030, and communication interface 1040).
It should be noted that although the above-described device only shows processor 1010, memory 1020, input/output interface 1030, communication interface 1040, and bus 1050, in an implementation, the device may include other components necessary to achieve proper operation. Furthermore, it will be understood by those skilled in the art that the above-described apparatus may include only the components necessary to implement the embodiments of the present description, and not all the components shown in the drawings.
The electronic device of the foregoing embodiment is configured to implement the corresponding IEC61850 model-based communication method in any of the foregoing embodiments, and has the beneficial effects of the corresponding method embodiment, which is not described herein.
Based on the same inventive concept, corresponding to any of the above embodiments of the method, the present disclosure also provides a non-transitory computer readable storage medium storing computer instructions for causing the computer to perform the IEC61850 model based communication method according to any of the above embodiments.
The computer readable media of the present embodiments, including both permanent and non-permanent, removable and non-removable media, may be used to implement information storage by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device.
The storage medium of the above embodiment stores computer instructions for causing the computer to execute the communication method based on the IEC61850 model according to any of the above embodiments, and has the advantages of the corresponding method embodiments, which are not described herein.
Those of ordinary skill in the art will appreciate that: the discussion of any of the embodiments above is merely exemplary and is not intended to suggest that the scope of the disclosure, including the claims, is limited to these examples; combinations of features of the above embodiments or in different embodiments are also possible within the spirit of the present disclosure, steps may be implemented in any order, and many other variations of the different aspects of one or more embodiments of the application as described above exist, which are not provided in detail for conciseness.
Additionally, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures, in order to simplify the illustration and discussion, and so as not to obscure one or more embodiments of the application. Furthermore, the apparatus may be shown in block diagram form in order to avoid obscuring the embodiment(s) of the present application, and also in view of the fact that specifics with respect to implementation of such block diagram apparatus are highly dependent upon the platform on which the embodiment(s) of the present application are to be implemented (i.e., such specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the disclosure, it should be apparent to one skilled in the art that one or more embodiments of the application can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative in nature and not as restrictive.
While the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations of those embodiments will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may use the embodiments discussed.
The present application is intended to embrace all such alternatives, modifications and variances which fall within the broad scope of the appended claims. Accordingly, any omissions, modifications, equivalents, improvements, and the like, which are within the spirit and principles of the one or more embodiments of the application, are intended to be included within the scope of the present disclosure.
Claims (8)
1. A communication method based on an IEC61850 model, comprising:
constructing a device tree diagram model for a target device according to an IEC61850 model file corresponding to the target device;
Determining data to be transmitted according to the device tree graph model when the target device is in a communication transmission state;
encoding the data to be transmitted according to an ASN.1 encoding and decoding rule, generating first protocol information, and transmitting the protocol information to be transmitted to a corresponding communication opposite terminal device of the target device;
Receiving second specification information in response to the target device being in a communication reception state;
analyzing the second protocol information according to the ASN.1 coding and decoding rule, determining request data corresponding to the second protocol information, and responding to the request data;
the encoding the data to be sent according to the asn.1 encoding and decoding rule, generating first protocol information, including:
Determining a request service corresponding to the data to be sent, and determining a first service code according to the request service;
Encoding the data to be transmitted according to the ASN.1 encoding and decoding rule, and determining a first service data unit corresponding to the data to be transmitted;
Combining the first service code with the first service data unit to generate the first protocol information;
The analyzing the second protocol information according to the asn.1 encoding and decoding rule, determining request data corresponding to the second protocol information, and responding to the request data, including:
Determining a service function set of the target device according to the target device data model;
Extracting and determining a second service code from the second protocol information, and determining a service function corresponding to the second service code in the service function set;
Determining a second service data unit according to the second protocol information, analyzing the second service data unit according to the ASN.1 coding and decoding rule, and determining the request data;
and calling the service function to respond to the request data.
2. The method of claim 1, wherein the step of determining the position of the substrate comprises,
The constructing a device tree diagram model for the target device according to the corresponding IEC61850 model file of the target device comprises the following steps:
determining a hierarchical logic relationship among logic equipment, logic nodes, data objects and data attributes in the target device according to the IEC61850 model file;
constructing the device tree graph model according to the hierarchical logic relationship;
In the plant tree graph model, the data objects are built as linear hash table structures.
3. The method as recited in claim 1, further comprising:
Determining a plurality of subscribers and subscription item information of the target device in response to the target device being in a communication subscription state;
And determining corresponding information to be distributed of the subscription item information according to the device tree diagram model, and sending the information to be distributed to the subscriber.
4. The method of claim 1, wherein the step of determining the position of the substrate comprises,
The transmission layer of the target device communication network adopts the user datagram protocol to carry out data transmission.
5. The method as recited in claim 1, further comprising:
the target device performs serial number authentication verification on the first protocol information and the second protocol information;
the target device communication network performs communication link testing at an application layer;
The target device communication network performs network security authentication at a network layer.
6. The method of claim 5, wherein the step of determining the position of the probe is performed,
The target device communication network performs communication link testing at an application layer, and comprises:
and the test code of the communication link test is determined according to the ASN.1 coding and decoding rule.
7. A communication system based on the IEC61850 model, comprising:
the device tree diagram construction module is used for constructing a device tree diagram model for the target device according to the IEC61850 model file corresponding to the target device;
The communication sending module is used for determining data to be sent according to the device tree graph model when the target device is in a communication sending state;
The communication sending module is further configured to encode the data to be sent according to an asn.1 encoding and decoding rule, generate first protocol information, and send the protocol information to be sent to a corresponding communication peer device of the target device;
And a communication receiving module for receiving second protocol information in response to the target device being in a communication receiving state;
The communication receiving module is further configured to parse the second protocol information according to the asn.1 codec rule, determine request data corresponding to the second protocol information, and respond to the request data;
the encoding the data to be sent according to the asn.1 encoding and decoding rule, generating first protocol information, including:
Determining a request service corresponding to the data to be sent, and determining a first service code according to the request service;
Encoding the data to be transmitted according to the ASN.1 encoding and decoding rule, and determining a first service data unit corresponding to the data to be transmitted;
Combining the first service code with the first service data unit to generate the first protocol information;
The analyzing the second protocol information according to the asn.1 encoding and decoding rule, determining request data corresponding to the second protocol information, and responding to the request data, including:
Determining a service function set of the target device according to the target device data model;
Extracting and determining a second service code from the second protocol information, and determining a service function corresponding to the second service code in the service function set;
Determining a second service data unit according to the second protocol information, analyzing the second service data unit according to the ASN.1 coding and decoding rule, and determining the request data;
and calling the service function to respond to the request data.
8. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, characterized in that,
The processor, when executing the program, implements the method of any one of claims 1 to 6.
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| CN105429781A (en) * | 2015-11-02 | 2016-03-23 | 华东交通大学 | Network communication design method based on IEC1850/MMS |
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| CN104821936A (en) * | 2015-03-24 | 2015-08-05 | 广东电网有限责任公司电力科学研究院 | System for realizing IEC61850 station level communication protocol based on socket and ASN.1 |
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