CN109713791B - Diagnostic method for remote control command abnormity of smart power grid - Google Patents
Diagnostic method for remote control command abnormity of smart power grid Download PDFInfo
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Abstract
The invention relates to a method for diagnosing remote control command abnormity of an intelligent power grid, and belongs to the technical field of digital information transmission. The method comprises the steps of establishing a protocol information matching rule table of a remote control command transmission process among communication layers of a power grid, establishing a corresponding transmission process queue table, comparing a message monitored in real time with the matching rule table, extracting protocol information conforming to the message of the rule table to generate information of a remote control step, summarizing the information of the remote control step, comparing the summarized information with the matching rule table again, and storing the information of the remote control step into the transmission process queue table; then the information of all remote control steps is formed into the whole transmission process information of the remote control command; when a message containing failure information appears in a monitoring remote control command, the information of the whole transmission process of the remote control command is searched, the remote control step corresponding to the message, two adjacent communication layers associated with the remote control step and associated fault equipment are found, and therefore diagnosis is completed.
Description
Technical Field
The invention relates to a method for diagnosing remote control command abnormity of an intelligent power grid, and belongs to the technical field of digital information transmission.
Background
With the continuous promotion of the construction of the intelligent power grid, the construction of the intelligent transformer substation and the intelligent power grid regulation and control technology support system is completed in succession, and important technical support is provided for the integrated construction of the dispatching and regulation and control of the large-operation area of the regional power grid. In an electric power system, a scheduling master station executes a remote control command on elements such as a disconnecting link or a switch and the like, the remote control command is sent to a scheduling network through a control front end, a plurality of network switches (a plurality of regional dispatching substations) connected with the scheduling network receive the remote control command from the scheduling network and then transmit the remote control command to a measurement and control device and an intelligent terminal, and finally, a control device terminal (the disconnecting link or the switch) executes an action. The remote control process comprises a selection request, a selection response, an operation request, an operation response, a trip (switch-on), position information and the like, and the remote control steps are transmitted layer by layer in a message mode around the remote control command through a network. The protocol standards followed by the network messages of each communication layer are different, such as: the communication between the front-end of the regulation and control device and the dispatching network and the communication between the dispatching network and the network shutdown device are 104 messages, the communication between the network shutdown device and the measurement and control device is an MMS message, and the communication between the measurement and control device and the intelligent terminal is a GOOSE message.
Massive data or messages such as 104, MMS, GOOSE and the like are received and sent at any moment among the communication layers, particularly, message data is huge under the condition of a plurality of gateway machines linked with a scheduling network, and the same remote control command is scattered and disordered among the messages of different communication layers, so that which remote control step belongs to which remote control process cannot be clearly expressed; because the semantics in each layer of messages are different, the current method extracts each layer of messages for respective analysis, which not only has large workload, but also cannot timely and comprehensively acquire the power grid regulation and control interaction data. In particular, if the remote control command is abnormal (failed or lost), the remote control command cannot be traced back, so that a corresponding fault point and a corresponding fault device cannot be found.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the method can be used for quickly and effectively diagnosing the remote control command abnormity of the intelligent power grid, so that powerful support is provided for power grid regulation and control.
The technical scheme provided by the invention for solving the technical problems is as follows: a diagnostic method for remote control command abnormity of a smart power grid comprises five communication layers, namely a regulation and control preposition layer, a scheduling network layer, a station control layer, a spacing layer and a process layer, wherein the remote control command is sent by a scheduling master station and is transmitted among the five communication layers in sequence by messages of three protocols, namely 104, MMS and GOOOSE; the messages are obtained in real time through a power communication protocol detector, the messages monitored in the four communication layers of the dispatching network layer, the station control layer, the spacer layer and the process layer are first messages, and the messages monitored in the two communication layers of the regulation and control front layer and the dispatching network layer are second messages; the following steps are carried out:
1) Establishing a protocol information matching rule table of the whole process of transmitting the remote control command between the five communication layers according to the corresponding relation of the remote control command between the three protocols, wherein the matching rule table comprises corresponding protocol information of the remote control command between the five communication layers and forms a protocol information entry;
2) Establishing transmission whole process queue lists of the remote control commands in five communication layers of the regulation and control preposition layer, the scheduling network layer, the station control layer, the spacing layer and the process layer according to the matching rule table and protocol information items thereof, establishing first transmission process queue lists of the remote control commands in four communication layers of the scheduling network layer, the station control layer, the spacing layer and the process layer, and establishing second transmission process queue lists of the remote control commands in two communication layers of the regulation and control preposition layer and the scheduling network layer;
3) Filtering and classifying the messages according to the three conventions, and extracting convention information of the messages after syntactic and semantic analysis;
4) Comparing the protocol information of the first message and the second message with the protocol information items of the matching rule table respectively, if the protocol information items are matched with the protocol information items, taking one-time one-way transmission of the first message or the second message between corresponding communication layers as a qualified remote control step, extracting the protocol information of the first message or the second message, storing the protocol information into the first transmission process queue list or the second transmission process queue list as the information of the remote control step, and otherwise, discarding the message;
5) Summarizing the information of the remote control step, comparing the information with the protocol information items of the matching rule table again, if protocol information contained in the information of the remote control step is matched with the protocol information items, storing the information into the transmission whole process queue list, otherwise, discarding the information of the remote control step;
6) Sorting the information of each remote control step in the transmission overall process queue list according to time, calculating the time interval from the information of the first remote control step to the information of the last remote control step, and if the time interval exceeds the set time, extracting the information of each remote control step in the transmission overall process queue list to form the transmission overall process information of the remote control command, and storing and displaying the transmission overall process information;
7) When the remote control command is monitored to generate a message containing failure information, a remote control step corresponding to the message is found by searching the whole transmission process information of the remote control command, two adjacent communication layers associated with the remote control step are found according to the information of the remote control step, and finally, the fault equipment associated with the two adjacent communication layers is positioned to complete diagnosis.
Further, the protocol information entry is a row and column formed by arranging the protocol information of the correspondence relationship of the remote control command in the communication layer in the matching rule, and the first transmission process queue table, the second transmission process queue table and the transmission overall process queue table are all empty tables completely corresponding to the row and column of the matching rule table.
Further, the set time range is 5 to 30 seconds.
Further, the matching rule table is a semantic association table of different conventions.
Further, the messages are 104 messages from the control front layer to the scheduling network layer, 104 messages from the scheduling network layer to the station control layer, MMS messages from the station control layer to the spacer layer, and GOOSE messages from the spacer layer to the process layer.
The beneficial effects of the invention are: because different protocols of remote control commands among different communication layers form a matching rule table of corresponding relation, and an overall process queue table of all remote control commands is established according to entries of the matching rule table, different protocol messages formed by the remote control commands on different communication layers are captured in real time through the existing electric power communication protocol detector to be classified and analyzed to extract protocol information, the protocol information of the messages matched with the matching rule table is extracted to form information of a remote control step, the information of the remote control step is stored into a first transmission queue table and a second transmission queue table, the information of the remote control step is collated with the matching rule table and then is compared for the second time, the information of the remote control step with the protocol information matched with the matching rule table is stored into the overall process queue table, and finally, the overall process information of the remote control commands which are transmitted in time sequence among different communication layers after being sent from a scheduling master station is established and stored; when the remote control command is abnormal (namely the remote control command contains failure information in a certain remote control step), the corresponding communication layer transmission position can be easily and quickly found through the established information of the whole remote control command transmission process, so that the fault equipment positioned in a specific communication layer is found, and the diagnosis is completed. And then, quick and effective help is provided for fault clearing, the full-process closed-loop monitoring management and analysis of the remote control command are realized, the equipment fault can be quickly eliminated, and powerful support is further provided for further power grid regulation and control.
Drawings
The method for diagnosing the abnormal remote control command of the smart grid according to the present invention is further described with reference to the accompanying drawings.
Fig. 1 is a schematic diagram of a remote control command transmission process in an embodiment of the present invention.
Fig. 2 is a schematic diagram showing an abnormality in the remote control command transmission process of fig. 1.
Detailed Description
Examples
In the method for diagnosing the abnormality of the remote control command of the smart power grid according to the embodiment, the communication of the smart substation is sequentially divided into five communication layers including a regulation front layer, a scheduling network layer, a station control layer, a spacer layer and a process layer, the remote control command is transmitted in messages formed by different protocols on each communication layer, and the messages specifically include: the method comprises the steps of regulating and controlling 104 messages from a front layer to a scheduling network layer, 104 messages from the scheduling network layer to a station control layer, MMS messages from the station control layer to a spacer layer and GOOSE messages from the spacer layer to a process layer, wherein the messages are obtained in real time through a power communication protocol detector. As shown in fig. 1, the specific monitoring method includes the following steps:
1) And establishing a protocol information matching rule table for transmitting the whole process of the remote control command among five communication layers according to the corresponding relation of the remote control command among the three protocols. The matching rules table is shown in table 1 below:
TABLE 1
In table 1, four remote control commands for picking up a certain intelligent substation in Nanjing at present are respectively synchronously closed of a Baixin 4R74 switch, synchronously closed of a Shijing 24F2 switch, opened and closed of a 1# main transformer 220kV switch and opened and closed of a Xingao 1999 switch. Each remote control command forms corresponding protocol information of a corresponding relationship among five communication layers of a regulation and control front layer, a dispatching network layer, a station control layer, a spacer layer and a process layer, and is arranged in a matching rule table to form protocol information entries (namely rows and columns in the rule table, for example, an entry formed by the first row and columns in table 1 is: baixin 4R74 open-245677-CL 2201CTRL/CBSynCSW-CL2201CTRL/LLN0$ BR-001A 1/00B1), so that a protocol information matching rule table for transmitting the whole process among the five communication layers by the four remote control commands is established.
2) According to the matching rule table and the protocol information items thereof, establishing transmission whole process queue lists of the four remote control commands on five communication layers of a regulation and control preposition layer, a scheduling network layer, a station control layer, a spacing layer and a process layer, establishing first transmission process queue lists of the four remote control commands on the four communication layers of the scheduling network layer, the station control layer, the spacing layer and the process layer, and establishing second transmission process queue lists of the four remote control commands on two communication layers of the regulation and control preposition layer and the scheduling network layer; the first transfer process queue table, the second transfer process queue table, and the transfer overall process queue table are empty tables that completely correspond to the rows and columns of the matching rule table.
3) And filtering and classifying each monitored message according to three conventions, and extracting convention information of each message after syntactic and semantic analysis. For example, for 104 messages, 104 remote control point numbers are extracted as specification information, for MMS messages, MMS references are extracted as specification information, and for GOOSE messages, GOOSE virtual terminals are extracted as specification information.
4) Comparing the protocol information of each of the first message and the second message with the protocol information items of the matching rule table, if the protocol information of the message is matched with the protocol information items, judging one-way transmission of the message (the first message or the second message) between corresponding communication layers as a qualified remote control step, extracting the protocol information of the message (the first message or the second message) and storing the protocol information into a first transmission process queue list or a second transmission process queue list as the information of the remote control step, and otherwise discarding the message (the first message or the second message).
For example: the power communication protocol detector monitors an MMS message from the station control layer to the spacing layer in real time, and the MMS message is judged to be a qualified remote control step from the station control layer to the spacing layer once by comparing protocol information items of the matching rule table, if the MMS message is matched, control reference ykdesc and report reference ykref protocol information in the MMS message are extracted and stored in a second transmission process queue table to serve as information of the qualified remote control step.
5) Summarizing the information generated in the step 4) in the remote control step, comparing the summarized information with the protocol information items of the matching rule table, if protocol information contained in the information in the remote control step is matched with the protocol information items, storing the information in a transmission whole-process queue list, otherwise, discarding the information in the remote control step;
6) And sorting the information of each remote control step in the transmission overall process queue list according to time, calculating the time interval from the information of the first remote control step to the information of the last remote control step, and if the time interval exceeds the set time, extracting the information of each remote control step in the transmission overall process queue list to form the transmission overall process information of the remote control command, and storing and displaying the transmission overall process information.
7) When a message containing failure information appears in a certain remote control command, a remote control step corresponding to the message is found by searching the whole transmission process information of the remote control command, two adjacent communication layers related to the remote control step can be found according to the information of the remote control step, and finally, the fault equipment related to the two adjacent communication layers is positioned to complete diagnosis.
For example: when a message containing 'MMS operation response, failure' information appears, the message of the transmission process of the established remote control command is searched, the 'MMS operation response' is found to correspond to the remote control step between the station control layer and the spacing layer (the specific remote control step is confirmed by specifically searching the information of the remote control step corresponding to the MMS operation response in the information of each remote control step), namely the network shutdown receives the message of the 'MMS operation response, failure' information from the measurement and control device, the abnormity of the remote control command caused by the fault of the measurement and control device can be judged, and powerful help is provided for further eliminating the fault of the measurement and control device.
In this embodiment, generally, the setting time range is 5 to 30 seconds; the matching rule table is a semantic association table formed by associating the semantics of different conventions.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and all the technical solutions and the concepts of the present invention are equivalent to or changed within the scope of the present invention.
Claims (5)
1. A diagnostic method for the abnormity of a remote control command of an intelligent power grid is disclosed, wherein the intelligent power grid comprises five communication layers of a regulation and control preposition layer, a scheduling network layer, a station control layer, a spacing layer and a process layer, the remote control command is sent by a scheduling master station and is transmitted among the five communication layers in sequence by messages of three protocols of 104, MMS and GOOSE; the messages are obtained in real time through a power communication protocol detector, the messages monitored in the four communication layers of the scheduling network layer, the station control layer, the spacer layer and the process layer are first messages, and the messages monitored in the two communication layers of the regulation and control front layer and the scheduling network layer are second messages; the method is characterized by comprising the following steps:
1) Establishing a protocol information matching rule table of the whole process of transmitting the remote control command between the five communication layers according to the corresponding relation of the remote control command between the three protocols, wherein the matching rule table comprises corresponding protocol information of the remote control command on the five communication layers and forms protocol information items;
2) Establishing transmission whole process queue lists of the remote control commands in five communication layers of the regulation and control preposition layer, the scheduling network layer, the station control layer, the spacing layer and the process layer according to the matching rule table and protocol information items thereof, establishing first transmission process queue lists of the remote control commands in four communication layers of the scheduling network layer, the station control layer, the spacing layer and the process layer, and establishing second transmission process queue lists of the remote control commands in two communication layers of the regulation and control preposition layer and the scheduling network layer;
3) Filtering and classifying the messages according to the three protocols, and extracting protocol information of the messages after syntactic and semantic analysis;
4) Comparing the protocol information of the first message and the second message with the protocol information items of the matching rule table respectively, if the protocol information items are matched with the protocol information items, taking one-way transmission of the first message or the second message between corresponding communication layers as a qualified remote control step, extracting the protocol information of the first message or the second message, storing the protocol information into the first transmission process queue list or the second transmission process queue list as the information of the remote control step, and if not, discarding the message;
5) Summarizing the information of the remote control step, comparing the information with the protocol information items of the matching rule table again, if protocol information contained in the information of the remote control step is matched with the protocol information items, storing the information into the transmission whole-process queue list, otherwise, discarding the information of the remote control step;
6) Sorting the information of each remote control step in the transmission whole-process queue list according to time, calculating the time interval from the information of the first remote control step to the information of the last remote control step, and if the time interval exceeds the set time, extracting the information of each remote control step in the transmission whole-process queue list to form the transmission whole-process information of the remote control command, and storing and displaying the transmission whole-process information;
7) When the remote control command is monitored to generate a message containing failure information, a remote control step corresponding to the message is found by searching the whole transmission process information of the remote control command, two adjacent communication layers associated with the remote control step are found according to the information of the remote control step, and finally, the fault equipment associated with the two adjacent communication layers is positioned to complete diagnosis.
2. The method for diagnosing the abnormality of the remote control command of the smart grid according to claim 1, wherein: the protocol information entry is a row and column formed by arranging the protocol information of the corresponding relation of the remote control command in the communication layer in the matching rule table, and the first transmission process queue table, the second transmission process queue table and the transmission whole process queue table are all empty tables completely corresponding to the row and column of the matching rule table.
3. The smart grid remote control command abnormality diagnosis method according to claim 1 or 2, characterized in that: the set time range is 5-30 seconds.
4. The smart grid remote control command abnormality diagnosis method according to claim 1 or 2, characterized in that: the matching rule table is a semantic association table of different conventions.
5. The smart grid remote control command abnormality diagnosis method according to claim 1 or 2, characterized in that: the messages are 104 messages from the regulation and control front layer to the scheduling network layer, 104 messages from the scheduling network layer to the station control layer, MMS messages from the station control layer to the spacing layer and GOOSE messages from the spacing layer to the process layer.
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