CN111092419A - Information protection substation and priority response method thereof for master station command - Google Patents
Information protection substation and priority response method thereof for master station command Download PDFInfo
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- CN111092419A CN111092419A CN201911415842.2A CN201911415842A CN111092419A CN 111092419 A CN111092419 A CN 111092419A CN 201911415842 A CN201911415842 A CN 201911415842A CN 111092419 A CN111092419 A CN 111092419A
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/261—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations
- H02H7/262—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured involving signal transmission between at least two stations involving transmissions of switching or blocking orders
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/26—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured
- H02H7/28—Sectionalised protection of cable or line systems, e.g. for disconnecting a section on which a short-circuit, earth fault, or arc discharge has occured for meshed systems
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/20—Systems supporting electrical power generation, transmission or distribution using protection elements, arrangements or systems
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- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention relates to a letter protection substation and a priority response method thereof aiming at a main station command.A management application module sends a channel state query message, a communication module receives the channel state query message, if the channel state is not lower than the priority level and is a channel waiting for execution by a command, a channel number, a channel state and a channel priority corresponding to the channel are written into a query confirmation message, and the query confirmation message is returned; otherwise, not returning the query confirmation message; if receiving the inquiry confirmation message, the application management module sends an execution permission message; the communication module receives the execution permission message and controls the state of the corresponding channel to be switched into a state that a command is being executed; if the inquiry confirmation message is not received, the priority level is reduced step by step, and the channel state inquiry message is retransmitted, so that the problem that how to process the command in the main station and the substation according to different priority levels does not exist in the prior art is solved.
Description
Technical Field
The invention relates to an information protection substation and a priority response method thereof for a main station command, and belongs to the technical field of power system automation.
Background
The relay protection fault information processing system is more and more important in the stable operation process of a power grid, stable operation of the power system cannot be achieved without various relay protection devices, and the information protection substation is responsible for remotely transmitting information of the relay protection devices at a plant station end to dispatching and receiving various calling and control commands of dispatching. At present, unattended transformer stations become a development trend, and the information protection substation becomes a key means for a main station end to know the operation condition of a protection device in the station in time.
The application scene of the existing information protection substation is that a general plant station end is provided with an information protection substation, and a plurality of main stations such as national tone, network tone, provincial tone, local tone and the like are simultaneously connected according to different requirements of voltage levels. The information protection substation needs to simultaneously forward information such as protection actions and wave recording bulletins in the substation to a plurality of main stations and simultaneously receive calling and control commands of the plurality of main stations. Especially, when the station has an internal fault, a plurality of main stations can simultaneously send commands for calling fault history information, a wave recording file list and a wave recording file. In general, different priorities are assigned to different master channels, and the master command with the highest priority is usually set for national dispatching, and then the master command with the highest priority should be processed preferentially by the network dispatching, provincial dispatching and the like.
However, the prior art does not disclose how to implement a method for processing commands according to different priority levels in the master station and the slave station.
Disclosure of Invention
The invention aims to provide an information protection substation and a priority response method thereof for a main station command, and solves the problem that the prior art does not have a mode of how to process commands in different priority levels in a main station and a substation.
In order to achieve the purpose, the technical scheme of the invention is as follows: the invention provides a priority response method of a letter protection substation for a main station command, which comprises the following steps:
an application management module sends a channel state query message, wherein the channel state query message comprises a priority level;
the communication module receives the channel state query message and queries each channel controlled by the communication module, and each channel is preset with a channel priority; if the priority level is not lower than the priority level and the channel state is a channel with a command waiting for execution, writing a channel number, a channel state and a channel priority corresponding to the channel into an inquiry confirmation message, and returning the inquiry confirmation message; if no channel with the priority lower than the priority level exists or the channel state is not the channel with the command waiting for execution, the inquiry confirmation message is not returned;
if the application management module receives the inquiry confirmation message, the application management module sends an execution permission message; the communication module receives the execution permission message and controls the state of the corresponding channel to be switched into a state that a command is being executed;
and if the application management module does not receive the query confirmation message, the priority level is reduced step by step, and the channel state query message is retransmitted.
According to the invention, through the interactive process of the application management module and the communication module, the priority level which is not lower than that in the channel state query message is determined, and the channel state is a channel with a command waiting for execution, so that the calling and control commands of the master station corresponding to the priority level can be responded preferentially, and the processing process of the master station command is regular and ordered.
Further, in order to process the command of the highest priority channel in time, the instantaneity of the system for processing important tasks is maintained, and in the execution permission message, the channel permitted to be executed is the channel with the highest priority level.
Further, in order to realize the interlocking among different channels and avoid the simultaneous execution of multi-channel commands so as to improve the command processing effect, the application management module firstly detects the execution state of the substation before sending the channel state query message, and sends the channel state query command if the execution state of the substation is no command execution or the command execution is overtime; if the execution status is that a command is being executed, no status query command is sent.
Furthermore, in order to improve the fluency of the processing process, when the execution state of the substation is that a command is being executed, the timing is started, and after the timeout time is reached, the execution state of the substation is switched to no command execution.
Furthermore, the priority is set for the channels corresponding to the main stations of national dispatching, network dispatching, provincial dispatching and local dispatching according to the sequence of the priority from high to low.
The invention also provides an information protection substation, comprising: the system comprises an application management module and a communication module, wherein the communication module controls more than two channels, and each channel is used for communicating with a corresponding master station; each channel is preset with a channel priority;
the management module and the communication module are interacted to realize the following method:
an application management module sends a channel state query message, wherein the channel state query message comprises a priority level;
the communication module receives the channel state inquiry message, inquires each channel controlled by the communication module, and if the channel state is not lower than the priority level and is a channel which has a command to wait for execution, writes a channel number, a channel state and a channel priority corresponding to the channel into the inquiry confirmation message and returns the inquiry confirmation message; if no channel with the priority lower than the priority level exists or the channel state is not the channel with the command waiting for execution, the inquiry confirmation message is not returned;
if the application management module receives the inquiry confirmation message, the application management module sends an execution permission message; the communication module receives the execution permission message and controls the state of the corresponding channel to be switched into a state that a command is being executed;
and if the application management module does not receive the query confirmation message, the priority level is reduced step by step, and the channel state query message is retransmitted.
According to the invention, through the interactive process of the application management module and the communication module, the priority level which is not lower than that in the channel state query message is determined, and the channel state is a channel with a command waiting for execution, so that the calling and control commands of the master station corresponding to the priority level can be responded preferentially, and the processing process of the master station command is regular and ordered.
Further, in order to process the command of the highest priority channel in time, the instantaneity of the system for processing important tasks is maintained, and in the execution permission message, the channel permitted to be executed is the channel with the highest priority level.
Further, in order to realize the interlocking among different channels and avoid the simultaneous execution of multi-channel commands so as to improve the command processing effect, the application management module firstly detects the execution state of the substation before sending the channel state query message, and sends the channel state query command if the execution state of the substation is no command execution or the command execution is overtime; if the execution status is that a command is being executed, no status query command is sent.
Furthermore, in order to improve the fluency of the processing process, when the execution state of the substation is that a command is being executed, the timing is started, and after the timeout time is reached, the execution state of the substation is switched to no command execution.
Furthermore, the priority is set for the channels corresponding to the main stations of national dispatching, network dispatching, provincial dispatching and local dispatching according to the sequence of the priority from high to low.
Drawings
FIG. 1 is a flow chart of a method in an embodiment of an information protection substation of the present invention;
FIG. 2 is a schematic diagram of channel state switching in an embodiment of the information protection substation of the present invention;
fig. 3 is a schematic diagram of the substation executing state switching in the information protecting substation embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The features and properties of the present invention are described in further detail below with reference to examples.
An embodiment of an information protection substation:
in this embodiment, taking a priority response process of the information protection substation to a plurality of master station commands as an example, an application management module and a communication module are added in the information protection substation. The communication module controls more than two channels, each channel is communicated with a corresponding main station, and the communication process between the two modules realizes the priority response of the information protection substation to a plurality of main station commands.
In this embodiment, the channel is a national network 103 channel, and as another embodiment, other channel types may be adopted, for example, a national network 104 channel.
As shown in fig. 1, the principle of the communication process between the application management module and the communication module in this embodiment is as follows:
in this embodiment, the application management module communicates with the communication module through a message, where the message includes two parts, namely a message type and a message body, and the message type includes a state query message, a query confirmation message, a state switching message, and an execution permission message of a channel of the national network 103. The inquiry message comprises a priority level, the inquiry confirmation message comprises a channel number, a channel state and a corresponding priority level, the state switching message comprises the channel number, the channel state and the corresponding priority level, and the execution permission message comprises the channel number.
1) The application management module sends a channel state query message, wherein the channel state query message comprises a priority level.
2) The communication module receives the channel state query message and queries each channel controlled by the communication module, and each channel is preset with a channel priority. If the priority level is not lower than the priority level and the channel state is a channel with a command waiting for execution, writing a channel number, a channel state and a channel priority corresponding to the channel into an inquiry confirmation message, and returning the inquiry confirmation message; and if no channel with the priority lower than the priority level exists or the channel state is not that a command is waiting to be executed, the inquiry confirmation message is not returned.
In this embodiment, different priorities are set for communication channels of a plurality of master stations and slave stations, such as a national tone, a network tone, a provincial tone, and a local tone, and different priority levels are given to the national network 103 channels of the national tone, the network tone, the provincial tone, and the local tone during initialization, and the national tone channel has the highest priority and is sequentially the network tone, the provincial tone, and the local tone. For example, the priority levels of the national network 103 channels assigned to the national tone, the network tone, the provincial tone and the local tone are 4, 3, 2 and 1.
In this embodiment, as shown in the figure, 4 different states are set for each channel: lane exceptions, no commands are executing, and commands are waiting to execute. And after the initialization of the channel of the national network 103 is completed, setting the channel state as channel abnormity. For example, after the substation receives the connection request from the master station and establishes connection, the communication module sets the channel state of the national network 103 channel corresponding to the master station to be executed without command. And if the communication is interrupted, setting the channel state as channel abnormity. The channel is in a command waiting execution state, if the execution permission message is received, the channel state is set to be that a command is being executed, if all commands of the channel wait overtime, the channel state is set to be command-free execution, and if the communication is interrupted at the moment, the channel state is set to be abnormal. When the channel has a command in the executing state, judging whether a subsequent command exists after the command is executed or the execution is overtime, and respectively setting the channel state as no command execution or command waiting execution.
For example, the application management module sends a priority level of 3 in the channel status query message, at this time, the channel statuses of the channels with priority levels of 3 and 4 are queried, and if the status of the channel with priority level of 4 is that there is a command to wait for execution, and the status of the channel with priority level of 3 is that there is no command to execute, the channel number, the channel status, and the channel priority level of the channel with priority level of 4 are written in the query message, and a query confirmation message is sent. If the channel status of the channels with the priority levels of 3 and 4 is queried as no command execution, the query confirm message is not sent.
3) The application module judges whether the inquiry confirmation message sent by the communication module is received.
If the application management module receives the inquiry confirmation message, the application management module sends an execution permission message; the communication module receives the execution permission message and controls the state of the corresponding channel to be switched into a state that a command is being executed;
and if the application management module does not receive the query confirmation message, the priority level is reduced step by step, and the channel state query message is retransmitted.
For example, when the communication module queries that the channel states of the channels with the priority levels of 3 and 4 are both executed without command, the communication module does not send the query confirmation message, the application management module does not receive the query confirmation message, and in the next message sending period, the communication module lowers the priority level to 2 and sends the channel state query message.
In order to process the command of the highest priority channel in time, the instantaneity of the system for processing important tasks is maintained, and the allowed channel in the execution message is the channel with the highest priority level.
As an improvement of the above embodiment, as shown in the drawing, in the present embodiment, the sub-station execution state is set with no-command execution, with a command being executed, and a command execution timeout. In order to realize the interlocking among different channels and avoid the simultaneous execution of multi-channel commands so as to improve the command processing effect, the application management module firstly detects the execution state of the substation before sending the channel state query message, and if the execution state of the substation is no command execution or the command execution is overtime, the application management module sends the channel state query command; if the execution status is that a command is being executed, no status query command is sent. The sending process of all the messages is limited to be in a no-command execution state or a command execution overtime state, so that the simultaneous execution of multi-channel commands can be effectively avoided, the pressure of the substation is reduced, and the reliability of the messages is improved.
And interlocking between the substation and the interactive channel is realized, and when the substation is in a no-command execution state, if the channel state is that a command is being executed at the moment, the interlocking state is set as that the command is being executed. And when the substation is in a command executing state, if the inquiry shows that the channel state corresponding to interaction is changed into no command executing, a command waiting for executing or channel abnormity, setting the interlocking state as no command executing, and if the channel state is not detected to change within the overtime time, setting the interlocking state as command executing overtime. And under the command execution overtime state, the inquiry confirmation message cannot be received, and the interlocking state is set to be the no-command execution state.
Meanwhile, in order to improve the fluency of the processing process, when the execution state of the substation is that a command is being executed, timing is started, and after the timeout time is reached, the execution state of the substation is switched to no command execution.
The above description is only a preferred embodiment of the present invention, and not intended to limit the present invention, the scope of the present invention is defined by the appended claims, and all structural changes that can be made by using the contents of the description and the drawings of the present invention are intended to be embraced therein.
Claims (10)
1. A priority response method of a letter protection substation for a main station command is characterized in that,
an application management module sends a channel state query message, wherein the channel state query message comprises a priority level;
the communication module receives the channel state query message and queries each channel controlled by the communication module, and each channel is preset with a channel priority; if the priority level is not lower than the priority level and the channel state is a channel with a command waiting for execution, writing a channel number, a channel state and a channel priority corresponding to the channel into an inquiry confirmation message, and returning the inquiry confirmation message; if no channel with the priority lower than the priority level exists or the channel state is not the channel with the command waiting for execution, the inquiry confirmation message is not returned;
if the application management module receives the inquiry confirmation message, the application management module sends an execution permission message; the communication module receives the execution permission message and controls the state of the corresponding channel to be switched into a state that a command is being executed;
and if the application management module does not receive the query confirmation message, the priority level is reduced step by step, and the channel state query message is retransmitted.
2. The method for responding to the priority of the master station command by the information protection substation according to claim 1, wherein the channel allowed to be executed is the channel with the highest priority level in the execution allowing message.
3. The priority response method of the information protection substation for the master station command according to claim 1, wherein the application management module first detects the execution state of the substation before sending the channel state query message, and sends the channel state query command if the execution state of the substation is no command execution or the command execution is overtime; if the execution status is that a command is being executed, no status query command is sent.
4. The method of claim 3, wherein when the execution state of the slave station is command execution, the slave station starts to count time, and when the timeout period is reached, the slave station switches the execution state to command-less execution.
5. The priority response method of the information protection substation for the master station command according to claim 1, wherein priorities are set for channels corresponding to the master stations of national, network, provincial, and regional dispatches in order of priority from high to low.
6. An information protection substation, comprising: the system comprises an application management module and a communication module, wherein the communication module controls more than two channels, and each channel is used for communicating with a corresponding master station; each channel is preset with a channel priority;
the management module and the communication module are interacted to realize the following method:
an application management module sends a channel state query message, wherein the channel state query message comprises a priority level;
the communication module receives the channel state inquiry message, inquires each channel controlled by the communication module, and if the channel state is not lower than the priority level and is a channel which has a command to wait for execution, writes a channel number, a channel state and a channel priority corresponding to the channel into the inquiry confirmation message and returns the inquiry confirmation message; if no channel with the priority lower than the priority level exists or the channel state is not the channel with the command waiting for execution, the inquiry confirmation message is not returned;
if the application management module receives the inquiry confirmation message, the application management module sends an execution permission message; the communication module receives the execution permission message and controls the state of the corresponding channel to be switched into a state that a command is being executed;
and if the application management module does not receive the query confirmation message, the priority level is reduced step by step, and the channel state query message is retransmitted.
7. The information protection substation of claim 6, wherein the channel allowed to be executed in the execution allowing message is a channel with the highest priority level.
8. The information protection substation of claim 6, wherein the application management module first detects the execution state of the substation before sending the channel state query message, and sends the channel state query command if the execution state of the substation is no command execution or command execution timeout; if the execution status is that a command is being executed, no status query command is sent.
9. The information protection substation of claim 8, wherein when the execution state of the substation is that a command is being executed, the timing is started, and when the timeout period is reached, the execution state of the substation is switched to no-command execution.
10. The information protection substation of claim 6, wherein the priority is set for the channels corresponding to the master stations of national, network, provincial and local dispatches in order of priority from high to low.
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| CN201911415842.2A CN111092419B (en) | 2019-12-31 | 2019-12-31 | Information protection substation and priority response method thereof for master station command |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111639876A (en) * | 2020-06-07 | 2020-09-08 | 杨益 | Main station connection and calculation system |
| CN112532694A (en) * | 2020-11-12 | 2021-03-19 | 许继集团有限公司 | Remote centralized control method and system suitable for master station communication |
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| CN111092419B (en) | 2022-01-07 |
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