CN114006954B - GOOSE message receiving and sending method and device - Google Patents
GOOSE message receiving and sending method and device Download PDFInfo
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- CN114006954B CN114006954B CN202111216778.2A CN202111216778A CN114006954B CN 114006954 B CN114006954 B CN 114006954B CN 202111216778 A CN202111216778 A CN 202111216778A CN 114006954 B CN114006954 B CN 114006954B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/03—Protocol definition or specification
Abstract
The invention relates to a method and a device for receiving and sending GOOSE messages, which change the time-consuming problem caused by the fact that in the prior art, a sending queue is searched through character string matching, data are put into the queue, and then a corresponding module is required to match relevant pins according to the character string after receiving the data, and the values are assigned to the pins. According to the technical scheme provided by the invention, the CCD file is analyzed before the GOOSE message is sent, and the mapping relation between the data and the receiver is established before the message is sent, so that time-consuming operations such as character string matching and the like are avoided, and the efficiency and accuracy of message receiving and sending can be effectively improved under the condition of large data volume.
Description
Technical Field
The invention relates to the technical field of data transmission of power systems, in particular to a method and a device for receiving and transmitting GOOSE messages.
Background
In the original IEC61850 protocol processing GOOSE receiving and transmitting message processing process, firstly, according to user information fields in a control block structure, corresponding mapping relations are needed to be searched through character strings, then internal data are converted into corresponding external display data content according to the corresponding mapping relations, then the data content is processed according to external function block receiving pins to form format data of pin name length+pin name+value length+value, the format data are sent to a function block, after the function block receives the format data, specific pins are matched according to the pin names, and the values are stored and displayed.
Because a large number of GOOSE messages exist on the embedded equipment, the user information fields in the control block structure body are utilized to search through character string matching, when the messages are sent to an external functional block, the message in a character string format is required to be formed, the analysis processing is required to be carried out on the character string on the side of the functional block, the serial character string processing has great influence on performance, and the requirements of IEC61850 protocol on performance cannot be met.
Disclosure of Invention
Based on the above situation in the prior art, the invention aims to provide a method and a device for sending and receiving a GOOSE message, which are used for analyzing and processing a CCD file before sending the GOOSE message and establishing a mapping relation between data and a receiver, so that the efficiency and the accuracy of sending and receiving the message are improved.
In order to achieve the above object, according to one aspect of the present invention, there is provided a method for sending GOOSE messages, including the steps of:
analyzing the CCD file to obtain file original data information, wherein the original data information comprises multiple paths of data to be transmitted;
establishing a mapping relation according to the original data information;
calculating an offset value of each data in the original data information;
and placing the original data in a GOOSE message according to the mapping relation and the offset value for sending.
Further, the establishing the mapping relation includes:
acquiring a control data block;
classifying each path of data in the multiple paths of data by adopting the control data block;
and establishing a mapping relation between each receiving party of each path of data and the classified data.
Further, classifying each path of data includes classifying according to a value, a quality and a time stamp.
Further, the acquiring the control data block includes:
judging whether a control data block exists or not; if yes, directly calling the control data block; if not, applying for space according to the structure size of the control data block, creating a control data block node, and adding the control data block node to a control data block linked list.
Further, the calculating the offset value of each data in the original data information includes:
if the data type is a value, a serial number is allocated to the value, and an offset value of the value is calculated according to a CPU number of a format 1 byte, a function block name of a 31 byte, a function block pin number of a 1 byte, a change mark of a 2 byte, a quality of a 12 byte and a value type of a 1 byte;
if the data type is quality, finding a corresponding offset first address according to the control data block, and calculating an offset value of the quality according to a CPU number of a format 1 byte, a function block name of a 31 byte, a function block pin number of a 1 byte and a change mark of the 1 byte;
if the data type is a time stamp, finding the corresponding offset head address, and calculating the offset value of the time stamp according to the CPU number of the format 1 byte, the function block name of the 31 bytes, the function block pin number of the 1 bytes, the change mark of the 1 bytes and the quality of the 2 bytes.
According to a second aspect of the present invention, there is provided a method for receiving GOOSE messages, including the steps of:
in the received GOOSE message, searching corresponding control block data in a control data block linked list according to a user number, wherein the received data corresponds to nodes on a GOOSE receiving data item linked list in the control block data one by one, and processing is carried out according to the linked list node sequence;
and according to the offset value in the GOOSE receiving data item linked list node, converting the data in the message according to the actual size and type, and then placing the data in the message into the corresponding offset address.
According to a third aspect of the present invention, there is provided a GOOSE message sending device, including a file parsing module, a mapping relation establishing module, an offset value calculating module and a sending module; the file analysis module is used for analyzing the CCD file to obtain file original data information, wherein the original data information comprises multiple paths of data to be sent;
the mapping relation establishing module is used for establishing a mapping relation according to the original data information;
the offset value calculation module is used for calculating the offset value of each data in the original data information;
the sending module is used for placing the original data in a GOOSE message according to the mapping relation and the offset value for sending.
According to a fourth aspect of the present invention, there is provided a GOOSE message receiving device, including a data searching module and a data placing module; wherein, the liquid crystal display device comprises a liquid crystal display device,
the data searching module is used for searching corresponding control block data in the received GOOSE message;
the data placement module is used for placing the data in the message into the corresponding offset address after converting the data in the message according to the actual size and type according to the offset value.
In summary, the invention provides a method and a device for sending and receiving a GOOSE message, which change the time-consuming problem caused by the fact that in the prior art, a sending queue is searched through character string matching, data is put into the queue, and then a corresponding module needs to match relevant pins according to the character string after receiving the data, and the values are assigned to the pins. According to the technical scheme provided by the invention, the CCD file is analyzed before the GOOSE message is sent, and the mapping relation between the data and the receiver is established before the message is sent, so that time-consuming operations such as character string matching and the like are avoided, and the efficiency and accuracy of message receiving and sending can be effectively improved under the condition of large data volume.
Drawings
FIG. 1 is a flow chart of a method for sending GOOSE messages according to the present invention;
FIG. 2 is a schematic diagram of a GOOSE receiving message model structure in a CCD file;
FIG. 3 is a schematic diagram of a GOOSE control data block linked list and control data block data items according to the present invention;
fig. 4 is a flowchart of a method for receiving GOOSE messages according to the present invention.
Detailed Description
The objects, technical solutions and advantages of the present invention will become more apparent by the following detailed description of the present invention with reference to the accompanying drawings. It should be understood that the description is only illustrative and is not intended to limit the scope of the invention. In addition, in the following description, descriptions of well-known structures and techniques are omitted so as not to unnecessarily obscure the present invention.
The following describes the technical scheme of the present invention in detail with reference to the accompanying drawings. According to an embodiment of the present invention, there is provided a method for sending GOOSE messages, where a flowchart of the method is shown in fig. 1, and the method includes the following steps:
analyzing the CCD file to obtain file original data information, wherein the original data information comprises multiple paths of data to be sent. Before IEC61850 protocol is processed, a loop instance configuration file (Configured Circuit Description, hereinafter referred to as a CCD file) needs to be analyzed, analysis of the CCD file is completed through an analysis function, the CCD file adopts an XML file format encoded by UTF-8, and the expansion name adopts a progressive scanning of (CCD), and then analysis is performed according to the XML format to obtain file original data information.
And establishing a mapping relation according to the original data information. The mapping relation is established, which comprises the following steps: acquiring a control data block; in the process of acquiring the control data block, firstly judging whether the control data block exists or not; if yes, directly calling the control data block; if not, applying for space according to the structure size of the control data block, creating a control data block node, and adding the control data block node to a control data block linked list. The control data block structure comprises an application number, a receiving data address pointer, a transmitting data address pointer, a GOOSE receiving data item linked list and a GOOSE transmitting control block linked list. And searching in the control data block linked list according to the application number to judge whether the control data block exists. Each data item of the GOOSE receiving data item linked list in the control data block comprises a CPU number, a function block name, a function block pin number, a data type, a data sequence number, a type identifier and a data offset address. Wherein the data type is used to identify that the data value is of the Boolean type, floating point type, integer type, or the like; the type identifier is used to indicate that the data is a value, quality, or time stamp. Each item of data storage is based on the CPU number of the format 1 byte+the function block name of the 31 bytes+the function block pin number of the 1 bytes+the change mark of the 1 bytes+the quality of the 2 bytes+the time stamp of the 12 bytes+the value type of the 1 bytes+the value of the x bytes, the offset address of the quality of the 2 bytes or the offset address of the time stamp of the 12 bytes or the offset address of the value of the x bytes can be calculated according to the identification content when calculating the offset address through the type identification, and an address space with proper size can be allocated to the value of the x bytes through the data type. And then classifying each path of data in the multipath data by adopting the control data block, wherein the specific steps include classifying each path of data include classifying according to values, qualities and time stamps. The value comprises a quality attribute and a time stamp attribute, when the data type of the path is identified as a value, a serial number is allocated to the value, and an offset value of the value is calculated according to a CPU number of a format 1 byte, a function block pin number of a 31 byte, a function block pin number of a 1 byte, a change mark of the 1 byte, a quality of a 2 byte and a time stamp of a 12 byte and a value type of the 1 byte; when the data is of quality, firstly finding out the corresponding offset head address according to the control data block, and then calculating the offset value of the quality according to the CPU number of the format 1 byte and the change mark of the function block pin number of the function block name of the function block number of the format 1 byte and the function block pin number of the function block number of the format 1 byte; when the data is a time stamp, the corresponding offset first address is found, and then the offset value of the time stamp is calculated according to the CPU number of the format 1 byte, the function block name of the 31 bytes, the function block pin number of the 1 bytes, the change mark of the 1 bytes and the quality of the 2 bytes.
Before IEC61850 protocol is processed, a mapping relation is established through a GOOSE mapping processing function. Based on CCD original data information, a control block data structure taking a user number (Applid) as a Key (Key) is established, and a linked list storage is generated. Classifying according to the use condition of each path of data in each group of data according to the value, the quality and the time stamp, extracting the index, and processing the mapping relation according to the consistency of the index.
And establishing a mapping relation between each receiving party of each path of data and the classified data.
And calculating the offset value of each data in the original data information. The offset value of each data is calculated using an offset processing function.
The following is illustrative: for example, as shown in fig. 2, each application id includes multiple paths of data, as shown in fig. 2, and each path of data is used by multiple users (i.e., data receivers), for example, a first path of data is a value and can be used by three users V1, V2 and V3, a second path of data is a quality and can be used by two users Q1 and Q3, and because the value, the quality and the time stamp are a set of data, the data corresponding to Q1 in the first path and the data corresponding to Q1 in the second path are a set of data. After the analysis of the CCD file is completed, the function goose_gen_association_from CCD is called, and the content of the structure before processing is shown in FIG. 2. Firstly, acquiring CCD file data according to a CPU number (CPU Id); and then searching whether the GOOSE mapping control data block exists or not according to the Applid. If not, the method is created according to the following XJ_GOOSE_MANAGE structure, and takes the user number Applid as a Key word Key:
if so, the data control block is acquired, and then classified according to the value or quality or time stamp of each path in fig. 2, and the user of each path of data is processed according to the corresponding relation. type indicates the data type, seq indicates the data sequence number, i.e. the number of data (this field will be processed only if this way is a value), the type identification flag indicates a value or quality or timestamp, and offset indicates the data offset address. The XJ_GOOSE_Item structures are stored as follows and added to the gooseITE linked list in the corresponding XJ_GOOSE_MANAGE structure. Fig. 3 shows a schematic diagram of a GOOSE control block list and a control block data item according to the present invention.
The GOOSE receiving data item in the control data block comprises information such as nodes, data types, data sequence numbers, type identifiers, data offset addresses and the like.
And placing the original data in a GOOSE message according to the mapping relation and the offset value for sending.
According to a second embodiment of the present invention, there is provided a method for receiving GOOSE messages, a flowchart of the method is shown in fig. 4, and the method includes the following steps:
searching corresponding control block data in the received GOOSE message;
and converting the data in the message according to the actual size and type and then placing the converted data into the corresponding offset address according to the offset value.
May further include: and comparing the received data with the originally stored message data, and modifying the originally stored message data according to the comparison result. If the received data is changed compared with the originally stored message data, the time stamp of the originally stored message data is updated, and the quality value of the originally stored message data is modified according to the connection state of the link.
The data needs to be converted according to the type and the actual size, for example, the externally presented data is of a Boolean type, but the data used in the program is of a non-Boolean type such as integer type, and when the data is assigned to the externally presented data, the data needs to be converted into a corresponding data format.
After receiving the GOOSE message, the IEC61850 protocol processing function searches the linked list to find corresponding control block data according to the app id, converts the data in the GOOSE message according to the actual size and type according to the offset value of each path of data, and then places the converted data in the GOOSE message into the corresponding offset address. The time stamp of the data can also be updated if there is a change according to the comparison of the latest received message data with the originally stored message data. The quality value of the data is modified according to the connection state of the link. And respectively sending the names and the types of the functional blocks to the functional blocks for analysis processing. Data is stored on the output pin variables directly on the functional block side according to the index and the data type.
According to a third embodiment of the present invention, a sending device of a GOOSE packet is provided, which includes a file parsing module, a mapping relation establishing module, an offset value calculating module and a sending module.
The file analysis module is used for analyzing the CCD file to obtain file original data information, wherein the original data information comprises multiple paths of data to be sent;
the mapping relation establishing module is used for establishing a mapping relation according to the original data information;
the offset value calculation module is used for calculating the offset value of each data in the original data information;
the sending module is used for placing the original data in a GOOSE message according to the mapping relation and the offset value for sending.
According to a fourth embodiment of the present invention, a GOOSE packet receiving device is provided, which includes a data searching module and a data placing module.
The data searching module is used for searching corresponding control block data in the received GOOSE message;
the data placement module is used for placing the data in the message into the corresponding offset address after converting the data in the message according to the actual size and type according to the offset value.
The specific steps for implementing the corresponding functions of the modules in the apparatus provided in the third and fourth embodiments are the same as those provided in the first and second embodiments of the present invention, and are not described herein.
In summary, the present invention relates to a method and an apparatus for sending and receiving GOOSE messages, which changes the time-consuming problem caused by searching a sending queue through character string matching and placing data into the queue, and then the corresponding module needs to match relevant pins according to the character string after receiving the data, and assign values to the pins. According to the technical scheme provided by the invention, the CCD file is analyzed before the GOOSE message is sent, and the mapping relation between the data and the receiver is established before the message is sent, so that time-consuming operations such as character string matching and the like are avoided, and the efficiency and accuracy of message receiving and sending can be effectively improved under the condition of large data volume.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explanation of the principles of the present invention and are in no way limiting of the invention. Accordingly, any modification, equivalent replacement, improvement, etc. made without departing from the spirit and scope of the present invention should be included in the scope of the present invention. Furthermore, the appended claims are intended to cover all such changes and modifications that fall within the scope and boundary of the appended claims, or equivalents of such scope and boundary.
Claims (8)
1. The GOOSE message sending method is characterized by comprising the following steps:
analyzing the CCD file to obtain file original data information, wherein the original data information comprises multiple paths of data to be transmitted;
establishing a mapping relation according to the original data information, wherein the mapping relation comprises the following steps: acquiring a control data block; classifying each path of data in the multiple paths of data by adopting the control data block; establishing a mapping relation between each receiving party of each path of data and the classified data;
calculating an offset value of each data in the original data information, including:
if the data type is a value, a serial number is allocated to the value, and an offset value of the value is calculated according to a CPU number of a format 1 byte, a function block name of a 31 byte, a function block pin number of a 1 byte, a change mark of a 2 byte, a quality of a 12 byte and a value type of a 1 byte;
if the data type is quality, finding a corresponding offset first address according to the control data block, and calculating an offset value of the quality according to a CPU number of a format 1 byte, a function block name of a 31 byte, a function block pin number of a 1 byte and a change mark of the 1 byte;
if the data type is a time stamp, finding a corresponding offset first address, and calculating an offset value of the time stamp according to the CPU number of the format 1 byte, the function block name of the 31 bytes, the function block pin number of the 1 bytes, the change mark of the 1 bytes and the quality of the 2 bytes;
and placing the original data in a GOOSE message according to the mapping relation and the offset value for sending.
2. The method of claim 1, wherein classifying each path of data comprises classifying by value, quality, and time stamp.
3. The method of claim 1, wherein the acquiring the control data block comprises:
judging whether a control data block exists or not; if yes, directly calling the control data block; if not, applying for space according to the structure size of the control data block, creating a control data block node, and adding the control data block node to a control data block linked list.
4. A method for receiving GOOSE messages, comprising the steps of:
in the received GOOSE message, searching corresponding control block data in a control data block linked list according to a user number, wherein the received data corresponds to nodes on a GOOSE receiving data item linked list in the control block data one by one, and processing is carried out according to the linked list node sequence; wherein the control block data before sending the GOOSE message is: based on CCD original data information, establishing a control block data structure with a user number as a key word, generating a linked list for storage, classifying according to values, quality and time stamps according to the use condition of each path of data in each group of data, extracting indexes, and processing mapping relations according to the consistency of the indexes;
and according to the offset value in the GOOSE receiving data item linked list node, converting the data in the message according to the actual size and type, and then placing the data in the message into the corresponding offset address.
5. The method as recited in claim 4, further comprising:
and comparing the received data with the originally stored message data, and modifying the originally stored message data according to the comparison result.
6. The method of claim 5, wherein modifying the originally stored message data based on the comparison result comprises:
if the received data is changed compared with the originally stored message data, the time stamp of the originally stored message data is updated, and the quality value of the originally stored message data is modified according to the connection state of the link.
7. The GOOSE message sending device is characterized by comprising a file analysis module, a mapping relation establishment module, an offset value calculation module and a sending module; wherein, the liquid crystal display device comprises a liquid crystal display device,
the file analysis module is used for analyzing the CCD file to obtain file original data information, wherein the original data information comprises multiple paths of data to be sent;
the mapping relation establishing module is used for establishing a mapping relation according to the original data information, and comprises the following steps: acquiring a control data block; classifying each path of data in the multiple paths of data by adopting the control data block; establishing a mapping relation between each receiving party of each path of data and the classified data;
the offset value calculating module is configured to calculate an offset value of each data in the original data information, and includes:
if the data type is a value, a serial number is allocated to the value, and an offset value of the value is calculated according to a CPU number of a format 1 byte, a function block name of a 31 byte, a function block pin number of a 1 byte, a change mark of a 2 byte, a quality of a 12 byte and a value type of a 1 byte;
if the data type is quality, finding a corresponding offset first address according to the control data block, and calculating an offset value of the quality according to a CPU number of a format 1 byte, a function block name of a 31 byte, a function block pin number of a 1 byte and a change mark of the 1 byte;
if the data type is a time stamp, finding a corresponding offset first address, and calculating an offset value of the time stamp according to the CPU number of the format 1 byte, the function block name of the 31 bytes, the function block pin number of the 1 bytes, the change mark of the 1 bytes and the quality of the 2 bytes;
the sending module is used for placing the original data in a GOOSE message according to the mapping relation and the offset value for sending.
8. The GOOSE message receiving device is characterized by comprising a data searching module and a data placing module; wherein, the liquid crystal display device comprises a liquid crystal display device,
the data searching module is configured to search corresponding control block data in a received GOOSE packet, where before sending the GOOSE packet, the control block data is: based on CCD original data information, establishing a control block data structure with a user number as a key word, generating a linked list for storage, classifying according to values, quality and time stamps according to the use condition of each path of data in each group of data, extracting indexes, and processing mapping relations according to the consistency of the indexes;
the data placement module is used for placing the data in the message into the corresponding offset address after converting the data in the message according to the actual size and type according to the offset value.
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