CN111478433A - Safe intelligent substation sequence control method and system - Google Patents

Abstract

The invention provides a safe intelligent substation sequence control method, which comprises the following steps: acquiring a real-time running state of the power system; controlling and transmitting an execution operation order to a communication gateway based on the real-time running state of the power system and the pre-expanded 104 protocol sequence; the communication gateway compares the execution operation ticket with a prestored operation ticket, generates an execution ticket according to the compared execution operation ticket and executes the execution ticket, and otherwise forms a sequential control process message and sends the sequential control process message to the regulation and control system; the sequence control function can help operators to execute complex operation tasks, traditional operation tickets are converted into task tickets, extra manual intervention is not needed in the whole process, the operation efficiency is improved to the maximum extent, and the misoperation risk is reduced; the power failure time caused by manual operation is shortened, and the effect is remarkable particularly in a high-voltage-grade transformer substation.

Description

A safe intelligent substation sequence control method and system

technical field

The invention belongs to the field of remote control of electric power dispatching automation systems, and relates to a safe sequence control method and system for an intelligent substation.

Background technique

The traditional sequence control operation tickets are all stored in the communication gateway machine. When the monitoring center needs to perform tasks remotely, it issues sequence control instructions. The communication gateway machine selects the corresponding operation tickets according to the received instructions, and forms operation instructions according to the content of the operation ticket. to the corresponding measurement and control device. In the realization method of this kind of sequential control, the correctness of the control function completely depends on the correctness of the self-storage operation ticket in the gateway machine. Seriously reduces the security of sequence control.

SUMMARY OF THE INVENTION

For the existing traditional sequential control operation tickets are stored in the communication gateway machine, the correctness of the control function completely depends on the correctness of the self-stored operation tickets in the gateway machine. The verification of the current operation mode of the power grid seriously reduces the safety of the sequence control. The invention provides a safe sequence control method and system for an intelligent substation, which maximizes the operation efficiency and reduces the risk of misoperation, and also shortens the The specific plan is as follows:

Obtain the real-time operating status of the power system;

Based on the real-time operating state of the power system and the pre-expanded 104 protocol sequence control, transmit the execution operation ticket to the communication gateway;

The communication gateway compares the execution operation ticket with the pre-stored operation ticket, generates the execution operation ticket through the comparison and executes the execution operation ticket, otherwise forms a sequence control process message and sends it to the regulation system.

Preferably, the sequential control of transmitting the execution operation ticket to the communication gateway based on the pre-expanded 104 protocol includes:

Based on the pre-expanded 104 protocol, the control message formed by the execution operation ticket is sequentially controlled to be transmitted to the communication gateway, and the task content of the execution operation ticket is mapped to the message of the corresponding type of the 104 protocol.

Preferably, the pre-expanded 104 protocol includes:

Based on ASDU52 transmission definition single interval sequence control data;

Based on ASDU53 transmission, data that defines sequence control across intervals;

Based on ASDU54 transmission, the data defining the sequence of the switch knife control sequence in the sequence control;

The execution operation ticket or execution ticket transmitted in the single interval and the execution operation ticket or execution ticket across the interval are stored separately in the control system;

Wherein, the ASDU52 and the ASDU53 both include: a transmission reason, a variable qualifier structure, an information body address and a sequence control information element format;

The transfer reasons include: sequence control activation, sequence control confirmation, sequence control deactivation, and sequence control termination.

Preferably, the format of the sequence control information element includes:

The sequence control information element is composed of multiple 8-bit groups to express the control content of an interval:

The first eight bits are used for the selection or execution of sequential control, the highest being 1 for sequential control selection, and 0 for sequential control execution;

The following 8-bit groups represent sequence control related intervals, the control information of the relevant intervals adopts the ACSII encoding method, and each 8-bit group expresses a scheduling number.

Preferably, the ASDU54 includes:

Burst or spontaneous transmission reason, body address and body element.

Preferably, the real-time operating status of the power system includes: status information of relevant switch switches, line current, bus voltage, and operating status of the protection monitoring and control device.

Preferably, the execution of generating an execution ticket through the comparison of the execution operation ticket includes:

The communication gateway machine will carry out step-by-step execution operation tickets through the comparison, and step-by-step send control commands to the corresponding measurement and control devices in the control system;

After each execution of the control command, the communication gateway machine judges whether the status information, line current, and bus voltage of the switch switch are consistent with the control command;

If the result is consistent, proceed to the next step to send the control command to the measurement and control device in the corresponding control system and execute the control command;

After the execution is completed, the execution ticket and the message of the execution ticket are stored in the regulation system.

Preferably, before the sequence control of transmitting the execution ticket to the communication gateway based on the real-time operating state of the power system and the pre-expanded 104 protocol, includes:

Generate an electronic draft operation ticket based on the current operation mode of the power system and the operation tasks of the substation;

The control system of the substation verifies the electronic draft operation ticket with the five prevention rules, and generates an execution operation ticket from the electronic draft operation ticket that has passed the verification.

Preferably, the electronic draft operation ticket is verified by five prevention rules, and an execution operation ticket is generated from the electronic draft operation ticket that has passed the verification, including:

Forming the verified execution operation ticket into a control message;

Return the electronic draft operation ticket that has not passed the verification to the wrong operation item of the electronic draft operation ticket for modification operation, and continue to verify after modification;

The verified electronic draft operation ticket includes the verified execution operation ticket and the failed verification electronic draft operation ticket.

Preferably, before the sequence control based on the pre-expanded 104 stipulation transmits the execution operation ticket to the communication gateway, the method further includes:

The control system judges whether the communication link for transmitting the 104 protocol is complete, and if it is complete, the transmission is performed; otherwise, the transmission is not performed;

It is judged whether there is information with a higher priority that needs to be transmitted in the 104 protocol for transmitting, and if there is a priority that needs to be transmitted, the information with a higher priority is transmitted first.

Based on the same concept, the present invention provides a safe intelligent substation sequence control system, including: an acquisition module, a transmission module and a comparison module;

The obtaining module is used to obtain the real-time operating state of the power system;

the transmission module, configured to sequentially control and transmit the execution operation ticket to the communication gateway based on the real-time operating state of the power system and the pre-expanded 104 protocol;

The comparison module is used for the communication gateway to compare the execution operation ticket with the pre-stored operation ticket, and generate an execution ticket through the comparison execution operation ticket for execution, otherwise a sequence control process message is formed and sent to the control system .

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention provides a safe sequence control method for an intelligent substation, which includes: acquiring the real-time operating state of the power system; based on the real-time operating state of the power system and the pre-expanded 104 protocol, the sequence control transmits an execution operation ticket to the communication gateway. ; The communication gateway compares the execution operation ticket with the pre-stored operation ticket, and generates an execution ticket for execution through the compared execution operation ticket, otherwise a sequence control process message is formed and sent to the control system; the sequence control function can help the operation Personnel perform complex operation tasks and convert traditional operation tickets into task tickets. No additional manual intervention is required in the whole process, which maximizes operation efficiency and reduces the risk of misoperation;

2. The present invention provides a safe sequence control method and system for an intelligent substation, which shortens the power outage time caused by manual operation, and is especially effective in high-voltage substations.

Description of drawings

1 is a flow chart of a method provided by the present invention;

2 is a diagram of 104 protocol transmission data provided by an embodiment of the present invention;

3 is a sequence control step diagram provided by an embodiment of the present invention;

FIG. 4 is a system structure diagram provided by the present invention.

Detailed ways

The embodiments of the present invention will be further described below with reference to the accompanying drawings.

Example 1:

The present invention provides a safe intelligent substation sequence control method and system, which is introduced in conjunction with the flowchart of the method provided by the present invention in FIG. 1 , and the specific steps are as follows:

Step 1: Obtain the real-time operating status of the power system;

Step 2: based on the real-time operating state of the power system and the pre-expanded 104 protocol sequence control to transmit an execution operation ticket to the communication gateway;

Step 3: the communication gateway compares the execution operation ticket with the pre-stored operation ticket, and generates an execution ticket for execution through the comparison execution operation ticket, otherwise a sequence control process message is formed and sent to the control system;

Wherein, step 1: obtaining the real-time operating status of the power system;

The traditional sequence control method is to send the sequence control operation ticket stored in the factory station to the dispatching master station through the file service in the 104 protocol, and the controller will verify the content in the sequence control operation ticket. Send an execution command to the factory station, and the communication gateway machine will decompose and execute the operation. This method requires the dispatcher to spend a lot of energy in reviewing the sequence control operation tickets, and also requires the dispatch center to record the naming of a large number of sequence control operation tickets. Since the operation ticket formats of each manufacturer are not exactly the same, a lot of work needs to be done at the dispatching end to unify the operation tickets of different formats before the unified five-proof verification and other measures to ensure operation safety are carried out, which is not conducive to the advanced dispatching end. Application expansion and development.

The present invention adopts the method of extending the 104 statute, maps the operation tickets that have been rehearsed and verified by the dispatcher to the standard scheduling 104 statute, and uses standardized data types to describe the entire transmission process, which can shield the difference between the equipment of each plant and station. , greatly reducing the workload of the master station system. At the factory site, different manufacturers parse the standardized sequence control message according to their own technical conditions, and compare the content of the message with the content of the pre-stored operation ticket. This method reduces the complexity of the master station system and reduces the load on the transmission channel.

In conjunction with the 104 protocol transmission data diagram in FIG. 2 , the specific implementation is described in detail:

1) Since the ASDU data type defined in the standard scheduling 104 communication protocol cannot express all the content of the sequence control in this method, the 104 protocol must be extended in order to complete the remote sequence control. The reserved ASDU52, ASDU53, and ASDU54 (52, 53, and 54 are decimal numbers) are used to transmit sequence control commands and sequence control information respectively in the IEC104 protocol control direction.

The two transmission data types ASDU52 and ASDU53 are used to define the single-interval sequence control and the cross-interval sequence control respectively, and the single-interval and cross-interval sequence control operation tickets are stored separately at the factory site, which can reduce the time when the communication gateway machine receives the operation command. After that, shorten the time to search for operation tickets. The following lists the specific definitions of the two data types:

Data Type: ASDU 52: Single Interval Sequence Control; ASDU 53: Across Interval Sequence Control

Variable qualifier structure: 01H

Transmission reason: 0600: Sequence control activated; 0700: Sequence control confirmed; 0800: Sequence control cancelled; 0A00: Sequence control ended

Message body address: 000000H

Sequence control information element format:

8 7-1 1/0 Isolation switch number

The sequence control information element uses multiple 8-bit groups to express the control content of an interval. The first octet is used for the selection/execution operation of the sequence control. The highest value is 1 for sequence control selection, and 0 for sequence control execution. There are several 8-bit groups behind to represent the sequence control related interval. Since there are some special scheduling names with English letters in the power system, when expressing the control information of the related interval, the ACSII encoding method is used, and each 8-bit Group expresses a one-digit schedule number. The ASDU 54 data type is used to define the sequence of the switch knife control sequence in the sequence control.

Data Type: ASDU 54

Transmission Reason: 0300: Burst/Spontaneous

Body address: three sets of octets

Information Body Elements:

8-2 1 reserve 0/1

Step 2: Based on the real-time operating state of the power system and the pre-expanded 104 stipulation, the sequence control transmits the execution operation ticket to the communication gateway:

1) Introduced in conjunction with the sequence control step diagram in Figure 3. The address of the information body is used to mark the position of the switch or knife switch in the remote control information point table in each step of the sequence control, and the last bit in the information body element is used to indicate the switch , The opening and closing operation of the knife switch, 1 means closing operation, 0 means opening operation. After receiving the complete operation sequence, the factory station side forms a sequence operation ticket that conforms to its own manufacturer's technical standards, which is used to compare with the operation ticket pre-stored at the factory station side.

2) The dispatcher should carefully check the current operating state of the system before performing sequence control, simulate the operation process at the dispatching end and generate an electronic draft operation ticket for sequence control according to the current operating mode and operation tasks of the power system.

3) Send the draft operation ticket to the five-proof system for logical verification of the entire operation process, and check whether all operation items meet the five-proof rules. If the listed operation content meets the five-proof blocking logic, the draft ticket will be processed in the next step; if the five-proof logic is not met, the error operation item will be returned and written into the "sequential control process report" file, which is convenient for the dispatcher to modify the operation process. mistake.

4) The execution operation ticket is generated through the draft ticket verified by the five-proof, and archived and stored after the operation is completed. According to the extension rules of the IEC104 communication protocol, the sequence control type and sequence control content in the execution ticket are mapped to the three types of messages ASDU52, ASDU53, and ASDU54 defined in step 1.

Step 3: The communication gateway compares the execution operation ticket with the pre-stored operation ticket, and generates an execution ticket for execution through the comparison execution operation ticket, otherwise a sequence control process message is formed and sent to the control system:

5) Before sending the sequence control command, the master station needs to judge the status of the communication link, whether the communication link is complete, and whether there is information with higher priority to be transmitted on the link. When the conditions are met, firstly send ASDU52 and ASDU53 type messages to the communication gateway for single-interval or cross-interval sequence control command selection. The content of the text contains the control sequence and control information of all switch switches in the entire sequence control process.

6) After verifying that the data in the ASDU54 type message is correct, the substation compares the operation sequence in the frame message with the corresponding operation ticket content in the ASDU52/ASDU53 type message. If the operation content issued by the master station is completely consistent with the content of the operation ticket stored in the communication gateway machine, the sequence control selection confirmation message will be returned to the master station; if the content is inconsistent, the sequence control selection failure message will be sent to the master station, and the Inconsistent information in the comparison results is written into the "sequential control process report" file, and is sent to the master station by the file transfer service in the IEC104 protocol for problem analysis, and timely arrangement of operation and maintenance personnel to maintain the equipment.

7) After the master station receives the sequence control selection confirmation message, it transmits the ASDU52/53 type message executed by the sequence control to the slave station. The communication gateway machine decomposes the content of the operation ticket, and sends control commands to the corresponding measurement and control devices step by step. After each step of operation, the communication gateway machine checks whether the state change of the switch knife is consistent with the control command, the current in the relevant lines, and the bus voltage. It is judged whether the changes of the controller conform to the operation logic. If the conditions for executing the next operation are met, the relevant control commands will be sent to the measurement and control; Write the result of the logic check into the "sequential control process report" file, and send it to the master station using the file transfer service in the IEC104 protocol. The operator can deal with it according to the content of the report.

8) In the process of executing the sequence control by the communication gateway machine, after each step is executed, a certain time interval is reserved before entering the next operation. On the one hand, this time interval is used for the refresh of remote signaling and telemetry data, so that the communication gateway machine can better judge whether the logic conditions of the next logical step are satisfied. In abnormal operation state, control commands such as cancellation and emergency stop are issued in time.

9) After the communication gateway machine executes all the operation items in the operation ticket, it collects the status information, line current, bus voltage, operation status of the protection measurement and control device, etc. The file transfer service in the IEC104 statute is sent to the master station, and the sequence control execution completion message with the message type ASDU52/53 is returned to the master station at the same time.

10) After the dispatcher receives the total success message of sequence control, the dispatcher stores the sequence control operation ticket together with the sequence control report file sent by the factory, and archives it to provide convenient conditions for future inquiry.

The invention provides a remote sequence control method, which ensures the correctness and accuracy of the sequence control process through various means such as master station simulation billing, master station five-proof verification, sequence control ticket comparison, and monitoring during execution. sex. Combined with remote fixed value area switching, the operation efficiency of the substation can be maximized under the premise of ensuring safety, and the power outage time caused by manual operation can be shortened.

Example 2:

Step 1: Since the ASDU data type defined in the standard scheduling 104 communication protocol cannot fully express the entire content of the sequence control in this scheme, the 104 protocol must be extended in order to complete the remote sequence control. The ASDU52, ASDU53, and ASDU54 of the optional reserved field in the control direction of the IEC104 protocol are used to transmit sequence control commands and sequence control information, respectively.

Step 2: The dispatcher simulates the operation process on the dispatcher side and generates a sequence control electronic draft operation ticket according to the current operation mode and operation tasks of the power system.

Step 3: Send the draft operation ticket to the dispatching five defense system to verify the entire simulated operation process, and check whether all operation items meet the five defense rules. If the listed operation items satisfy the five-proof locking logic, the draft ticket will be processed in the next step; if the five-proofing logic is not met, the error operation item will be returned, which is convenient for the dispatcher to modify the operation process in time.

Step 4: The draft ticket that has passed the five-proof verification will generate an execution ticket, which will be archived and stored after the operation is completed. According to the extension rules of the IEC104 communication protocol, the operation sequence in the execution ticket is mapped to the messages of the ASDU52, ASDU53, and ASDU54 data types.

Step 5: The master station first sends ASDU52 and ASDU53 data type messages to the communication network management machine for sequence control selection. After the frame information is sent, the master station continues to transmit ASDU54 messages with sequence control information to the slave station.

Step 6: After verifying that the received ASDU54 data type message is correct, the substation compares the sequence operation information in the frame message with the corresponding operation ticket content in the ASDU52/ASDU53 data message. If the operation sequence issued by the master station is completely consistent with the content of the operation ticket stored in the communication gateway machine, the sequence control selection confirmation message will be returned to the master station; if the content is inconsistent, the sequence control selection failure message will be returned and the error content will be formed as "Sequence control process report" file, which is sent to the master station using the file transfer service in the IEC104 protocol for analyzing specific problems.

Step 7: After receiving the sequence control selection confirmation message, the master station transmits the ASDU52/53 type message for sequence control execution to the slave station. After the communication network management machine receives the execution message, it decomposes the content of the operation ticket, and sends control commands to the corresponding measurement and control device step by step. If the conditions for executing the next operation are met, if the conditions for executing the next operation are met; if not, the result of the logic check will be recorded in the "sequential control process report" file, and sent to the file transmission service in the IEC104 statute. On the master station side, the operator can perform corresponding processing according to the report content. At the same time of returning the report, it returns the sequence control total failure message to the master station, and the message type is ASDU52/53.

Step 8: During the process of the communication gateway machine executing the sequence control, the dispatcher needs to monitor the intermediate process, and issue operation commands such as cancellation and emergency stop according to the grid state after each step is executed.

Step 9: After the communication gateway machine completes all the operations in the operation ticket, it collects the status information, line current, bus voltage, and operation status of the protection measurement and control device of the relevant switch switches to form a "sequential control process report" file. The file transfer service is sent to the host side. While transmitting the report, it returns a sequence control case success message to the master station, and the message type is ASDU52/53.

Step 10: After receiving the sequence control total success message, the scheduler stores the sequence control operation ticket together with the report file, and archives it for easy query and retrieval.

The invention provides a remote sequence control method, which ensures the correctness and accuracy of the sequence control process through various means such as master station simulation billing, master station five-proof verification, sequence control ticket comparison, and monitoring during execution. sex. Combined with remote fixed value area switching, the operation efficiency of the substation can be maximized under the premise of ensuring safety, and the power outage time caused by manual operation can be shortened.

Example 3:

1. A safe sequence control method for an intelligent substation, comprising the following steps:

Step 1: Extend the IEC-60970-5-104 statute to meet the sequence control related content that needs to be transmitted in the present invention;

Step 2: The dispatcher simulates the operation process at the dispatching end and generates a sequence control electronic draft operation ticket according to the current operation mode and operation tasks of the power system;

Step 3: Send the draft operation ticket to the dispatching five-defense system for verification of the five-defense rules, and perform corresponding processing according to the verification result;

Step 4: According to the extension rules of the IEC104 communication protocol, map the operation sequence in the execution ticket to the messages of the ASDU52, ASDU53, and ASDU54 data types;

Step 5: According to the relevant state of the communication link, the master station is dispatched to transmit 104 sequence control messages of ASDU52, ASDU53, and ASDU54 data types to the factory station communication gateway machine, which is used for the selection operation of sequence control;

Step 6: The communication gateway machine checks the sequence control content according to the received sequence control message. If it passes the check, it returns the sequence control selection confirmation message to the master station. If the check fails, it returns the sequence control selection failure message. arts;

Step 7: After receiving the sequence control selection confirmation message, the dispatcher sends the sequence control execution message to the factory site. The factory station decomposes and executes the sequence control operation ticket, and judges the execution result of each step. If the conditions are met, the sequence control of one step can be performed;

Step 8: In the process of the communication gateway machine executing the sequence control, the dispatcher needs to monitor the intermediate process, and issue operation instructions such as cancellation and emergency stop according to the state of the power grid after each step is executed;

Step 9: After the communication gateway machine completes all the operations in the operation ticket, it collects the status information, line current, bus voltage, and operation status of the protection measurement and control device of the relevant switch switches to form a "sequential control process report" file. The file transfer service is sent to the master station;

Step 10: After receiving the sequence control total success message, the scheduler stores the sequence control operation ticket together with the report file, and archives it for easy query and retrieval.

2. a kind of safe intelligent substation sequence control method according to claim 1 is characterized in that: step 1, the IEC-60970-5-104 statute is extended, the ASDU52, ASDU53 of the selection reserved field in the control direction , ASDU54 are used to transmit sequence control commands and sequence control information respectively.

3. A kind of safe sequence control method of intelligent substation according to claim 1, is characterized in that: step 4, map the execution operation ticket by dispatching five defense systems to the data type newly defined in step 1, adopt This method can shield the difference of each plant and station equipment, and this method reduces the complexity of the master station system and the load of the transmission channel.

4. A kind of safe sequence control method of intelligent substation according to claim 1, is characterized in that: Step 5, dispatch adopts the process similar to remote control operation in completing the whole sequence control process, and adds a "" "Sequence Control Process Report" file, which is used to record relevant information in the entire sequence control process.

5. A kind of safe sequence control method of intelligent substation according to claim 1 is characterized in that: in step 6, compared with traditional sequence control, the communication gateway machine will switch the knife switch according to the The state and the changes of line current and bus voltage are used to judge whether the conditions for executing the next step are met, and the conditions are automatically executed without manual intervention.

Example 4:

Based on the same inventive concept, the present invention provides a safe intelligent substation sequence control system, which is introduced in conjunction with the system structure diagram in FIG. 4 , including: an acquisition module, a transmission module and a comparison module;

The obtaining module is used to obtain the real-time operating state of the power system;

the transmission module, configured to sequentially control and transmit the execution operation ticket to the communication gateway based on the real-time operating state of the power system and the pre-expanded 104 protocol;

The comparison module is used for the communication gateway to compare the execution operation ticket with the pre-stored operation ticket, and generate an execution ticket through the comparison execution operation ticket for execution, otherwise a sequence control process message is formed and sent to the control system .

Preferably, the transmission module includes: a pre-expansion sub-module and a protocol message sub-module;

The pre-expanded submodule is used to expand the 104 protocol;

The protocol message sub-module is configured to sequentially control and transmit the control message formed by the execution operation ticket to the communication gateway based on the pre-expanded 104 protocol, and send the execution operation based on the pre-extended 104 protocol. The task content of the ticket is mapped to the message of the corresponding type of the 104 protocol.

Preferably, the pre-expanded sub-module includes: ASDU52 unit, ASDU53 unit and ASDU54 unit;

The ASDU52 unit is used to transmit data that defines single-interval sequence control;

The ASDU53 unit is used to transmit the data that defines the cross-interval sequence control;

The ASDU54 unit is used to transmit the data defining the sequence of the switch knife control sequence in the sequence control;

The execution operation ticket or execution ticket transmitted in the single interval and the execution operation ticket or execution ticket across the interval are stored separately in the control system;

Wherein, the ASDU52 unit and the ASDU53 unit both include: transmission reason, variable qualifier structure, information body address and sequence control information element format;

The transfer reasons include: sequence control activation, sequence control confirmation, sequence control deactivation, and sequence control termination.

Preferably, the format of the sequence control information element includes:

The sequence control information element is composed of multiple 8-bit groups to express the control content of an interval:

The first eight bits are used for the selection or execution of sequential control, the highest being 1 for sequential control selection, and 0 for sequential control execution;

The following 8-bit groups represent sequence control related intervals, the control information of the relevant intervals adopts the ACSII encoding method, and each 8-bit group expresses a scheduling number.

Preferably, the ASDU 54 unit includes: a burst or spontaneous transmission reason, an information body address and an information body element.

Preferably, the alignment module includes: a sub-module that passes the alignment and a sub-module that does not pass the alignment;

The comparison is performed by a sub-module, which is used to generate an execution ticket and execute the execution operation ticket that has passed the comparison;

The comparison failure sub-module is configured to send operation tickets that fail the comparison to form a sequence control process message and send it to the regulation system.

Preferably, the comparison passes through a sub-module, including: a step-by-step sending unit, a step-by-step judgment unit, a matching execution unit, and a storage unit;

The step-by-step sending unit is used for the communication gateway machine to perform step-by-step comparison of the execution operation ticket, and step-by-step to send a control command to the corresponding measurement and control device in the control system;

The step-by-step judging unit is used for each time the control command is executed, the communication gateway machine judges whether the status information, line current, and bus voltage of the switch switch are consistent with the control command;

The matching execution unit is used to send the control command to the measurement and control device in the corresponding control system and execute the control command in the next step if the result is consistent;

The storage unit is configured to store the execution ticket and the message of the execution ticket into the regulation system for storage after the execution ends.

Preferably, the system further includes: a draft module, a five-proof verification module and a link judgment module;

The draft module is used to generate an electronic draft operation ticket based on the current operation mode of the power system and the operation task of the substation;

The five-proof verification module is used for the control system of the substation to verify the five-proof rules for the electronic draft operation ticket, and generates an execution operation ticket from the electronic draft operation ticket that has passed the verification;

The link judgment module is used for the control system to judge whether the communication link for transmitting the content in the 104 protocol is complete, and whether there is information with a higher priority to be transmitted.

Preferably, the five-proof verification module includes: a verification pass sub-module and a verification fail sub-module;

The verification passing sub-module is used to form the execution operation ticket that has passed the verification into a control message;

The verification failure sub-module is used to return the electronic draft operation ticket that has not passed the verification to the wrong operation item of the electronic draft operation ticket for modification operation, and continue the verification after modification.

Preferably, the link judgment module includes: a complete judgment sub-module and a priority transmission sub-module;

The complete judgment submodule is used for the control system to judge whether the communication link for transmitting the 104 protocol is complete, and if complete, the transmission is performed, otherwise, the transmission is not performed;

The priority transmission sub-module is used for judging whether there is information with a higher priority to be transmitted in the 104 protocol, and if there is a priority to be transmitted, the information with a higher priority is transmitted first.

As will be appreciated by those skilled in the art, the embodiments of the present application may be provided as a method, a system, or a computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the present application. It will be understood that each flow and/or block in the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to the processor of a general purpose computer, special purpose computer, embedded processor or other programmable data processing device to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing device produce Means for implementing the functions specified in a flow or flow of a flowchart and/or a block or blocks of a block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions The apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

These computer program instructions can also be loaded on a computer or other programmable data processing device to cause a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process such that The instructions provide steps for implementing the functions specified in the flow or blocks of the flowcharts and/or the block or blocks of the block diagrams.

The above are only examples of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention are included in the application for pending approval of the present invention. within the scope of the claims.

Claims (11)

1. a safe intelligent substation sequence control method, is characterized in that, comprises: Obtain the real-time operating status of the power system; Based on the real-time operating state of the power system and the pre-expanded 104 protocol sequence control, transmit the execution operation ticket to the communication gateway; The communication gateway compares the execution operation ticket with the pre-stored operation ticket, generates the execution operation ticket through the comparison and executes the execution operation ticket, otherwise forms a sequence control process message and sends it to the regulation system. 2 . The method according to claim 1 , wherein the orderly control of transmitting the execution operation ticket to the communication gateway based on the pre-expanded 104 protocol comprises: 2 . Based on the pre-expanded 104 protocol, the control message formed by the execution operation ticket is sequentially controlled to be transmitted to the communication gateway, and the task content of the execution operation ticket is mapped to the message of the corresponding type of the 104 protocol. 3. The method of claim 2, wherein the pre-expanding 104 protocol comprises: Based on ASDU52 transmission definition single interval sequence control data; Based on ASDU53 transmission, data that defines sequence control across intervals; Based on ASDU54 transmission, the data defining the sequence of the switch knife control sequence in the sequence control; The execution operation ticket or execution ticket transmitted in the single interval and the execution operation ticket or execution ticket across the interval are stored separately in the control system; Wherein, the ASDU52 and the ASDU53 both include: a transmission reason, a variable qualifier structure, an information body address and a sequence control information element format; The transfer reasons include: sequence control activation, sequence control confirmation, sequence control deactivation, and sequence control termination. 4. The method of claim 3, wherein the sequence control information element format comprises: The sequence control information element is composed of multiple 8-bit groups to express the control content of an interval: The first eight bits are used for the selection or execution of sequential control, the highest being 1 for sequential control selection, and 0 for sequential control execution; The following 8-bit groups represent sequence control related intervals, the control information of the relevant intervals adopts the ACSII encoding method, and each 8-bit group expresses a scheduling number. 5. The method of claim 3, wherein the ASDU 54 comprises: Burst or spontaneous transmission reason, body address and body element. 6 . The method according to claim 1 , wherein the real-time operating status of the power system comprises: status information of relevant switch switches, line current, bus voltage, and operating status of protection monitoring and control devices. 7 . 7. The method according to claim 1, characterized in that, generating an execution ticket for execution by comparing an execution operation ticket, comprising: The communication gateway machine will carry out step-by-step execution operation tickets through the comparison, and step-by-step send control commands to the corresponding measurement and control devices in the control system; After each execution of the control command, the communication gateway machine judges whether the status information, line current, and bus voltage of the switch switch are consistent with the control command; If the result is consistent, proceed to the next step to send the control command to the measurement and control device in the corresponding control system and execute the control command; After the execution is completed, the execution ticket and the message of the execution ticket are stored in the regulation system. 8 . The method of claim 1 , wherein, before the sequence control based on the real-time operating state of the power system and the pre-expanded 104 protocol, the execution ticket is transmitted to the communication gateway, comprising: 8 . Generate an electronic draft operation ticket based on the current operation mode of the power system and the operation tasks of the substation; The control system of the substation verifies the electronic draft operation ticket with the five prevention rules, and generates an execution operation ticket from the electronic draft operation ticket that has passed the verification. 9 . The method according to claim 8 , wherein the verification of the five-proof rule is performed on the electronic draft operation ticket, and an execution operation ticket is generated from the electronic draft operation ticket that has passed the verification, comprising: 10 . : Forming the verified execution operation ticket into a control message; Return the electronic draft operation ticket that has not passed the verification to the wrong operation item of the electronic draft operation ticket for modification operation, and continue to verify after modification; The verified electronic draft operation ticket includes the verified execution operation ticket and the failed verification electronic draft operation ticket. 10 . The method of claim 8 , wherein, before the sequence control based on the pre-expanded 104 protocol is transmitted to the communication gateway, the method further comprises: 10 . The control system judges whether the communication link for transmitting the 104 protocol is complete, and if it is complete, the transmission is performed; otherwise, the transmission is not performed; It is judged whether there is information with a higher priority that needs to be transmitted in the 104 protocol for transmitting, and if there is a priority that needs to be transmitted, the information with a higher priority is transmitted first. 11. A safe sequence control system for an intelligent substation, comprising: an acquisition module, a transmission module and a comparison module; The obtaining module is used to obtain the real-time operating state of the power system; the transmitting module, configured to sequentially control and transmit an execution operation ticket to the communication gateway based on the real-time operating state of the power system and the pre-expanded 104 protocol; The comparison module is used for the communication gateway to compare the execution operation ticket with the pre-stored operation ticket, and generate an execution ticket through the comparison execution operation ticket for execution, otherwise a sequence control process message is formed and sent to the control system .

Images