CN111478433A - Safe intelligent substation sequence control method and system - Google Patents
Safe intelligent substation sequence control method and system Download PDFInfo
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- CN111478433A CN111478433A CN202010179840.4A CN202010179840A CN111478433A CN 111478433 A CN111478433 A CN 111478433A CN 202010179840 A CN202010179840 A CN 202010179840A CN 111478433 A CN111478433 A CN 111478433A
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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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
Technical Field
The invention belongs to the field of remote control of power dispatching automation systems, and relates to a safe intelligent substation sequence control method and system.
Background
The traditional sequential control operation order is stored in the communication network shutdown machine, when a monitoring center needs to execute tasks remotely, a sequential control instruction is issued, the communication network shutdown machine selects a corresponding operation order according to the received instruction, an operation instruction is formed according to the content of the operation order and is sent to a corresponding measurement and control device. According to the method for realizing the sequence control, the correctness of the control function completely depends on the correctness of the self-stored operation ticket in the gateway, and no program is used for verifying whether the operation steps conform to the current operation mode of the power grid before the control operation is executed, so that the safety of the sequence control is seriously reduced.
Disclosure of Invention
Aiming at the problems that the conventional sequence control operation tickets are stored in a communication gateway machine, the correctness of the control function completely depends on the correctness of the self-stored operation tickets in a gateway machine, and no program is used for verifying whether the operation steps conform to the current operation mode of a power grid before the control operation is executed, so that the shortage of the safety of the sequence control is seriously reduced, the invention provides a safe intelligent substation sequence control method and a safe intelligent substation sequence control system, the operation efficiency is improved to the maximum extent, the misoperation risk is reduced, and the power failure time caused by manual operation is also shortened, and the specific scheme is as follows:
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;
and 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 otherwise forms a sequential control process message and sends the sequential control process message to the regulation and control system.
Preferably, the controlling and transmitting the execution operation ticket to the communication gateway based on the pre-expanded 104 protocol sequence includes:
and controlling and transmitting a control message formed by the execution operation order to a communication gateway based on the pre-expanded 104 protocol sequence, and mapping the task content of the execution operation order to the message of the type corresponding to the 104 protocol.
Preferably, the pre-expanded 104 protocol includes:
transmitting data defining single interval sequential control based on the ASDU 52;
transmitting data defining sequential control across intervals based on the ASDUs 53;
transmitting data defining the sequence of switch knife control in sequence control based on the ASDU 54;
the execution operation tickets or execution tickets transmitted at the single interval and the execution operation tickets or execution tickets transmitted at the cross intervals are respectively stored in the regulation and control system;
wherein, the ASDU52 and the ASDU53 both comprise: a transmission reason, a variable qualifier structure, a body address, and a sequence control information element format;
the transmission reason includes: sequence control activation, sequence control confirmation, sequence control revocation and sequence control termination.
Preferably, the sequential control information element format includes:
the sequential control information element expresses the control content of an interval by a plurality of 8-bit groups:
the first eight bits are used for selection or execution of sequential control, the highest 1 represents sequential control selection, and 0 represents sequential control execution;
the latter 8-bit groups represent sequential control correlation intervals, control information of the correlation intervals adopts an ACSII coding mode, and each 8-bit group expresses a one-bit scheduling number.
Preferably, the ASDU54 includes:
burst or spontaneous transmission cause, body address and body element.
Preferably, the real-time operation state of the power system includes: and state information of the relevant switch knife switch, line current, bus voltage and the running state of the protection measurement and control device.
Preferably, the generating of the execution ticket by the compared execution operation ticket includes:
the communication gateway machine carries out step-by-step operation through the compared execution operation tickets and sends control commands to the corresponding measurement and control devices in the regulation and control system step by step;
after the control command is executed each time, the communication gateway machine judges whether the state information of the switch disconnecting link, the line current and the bus voltage accord with the control command or not;
if the result is consistent, the next step is carried out, the control command is sent to the corresponding measurement and control device in the regulation and control system, and the control command is executed;
and after the execution is finished, the execution ticket and the message of the execution ticket are stored in the regulation and control system.
Preferably, before controlling and 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 sequence, the method includes:
generating an electronic draft operation ticket based on the current operation mode of the power system and the operation task of the transformer substation;
and the regulation and control system of the transformer substation carries out five-prevention rule verification on the electronic draft operation ticket and generates an execution operation ticket according to the verified electronic draft operation ticket.
Preferably, the verifying the electronic draft operation ticket according to the five-prevention rule and generating an execution operation ticket from the verified electronic draft operation ticket includes:
forming a control message by the verified execution operation ticket;
returning the electronic draft operation ticket which is not verified to the error operation item of the electronic draft operation ticket for modification operation, and continuing verification after modification;
the verified electronic draft operation ticket comprises the verified execution operation ticket and the electronic draft operation ticket which is not verified.
Preferably, before the controlling and transmitting the execution operation ticket to the communication gateway based on the pre-expanded 104 protocol sequence, the method further includes:
the regulation and control system judges whether a communication link for transmitting the 104 protocol is complete, if so, the communication link is transmitted, otherwise, the communication link is not transmitted;
and judging whether the information with higher priority is transmitted in the 104 protocol, if so, transmitting the information with higher priority first.
Based on the same conception, the invention provides a safe intelligent substation sequence control system, which comprises: the device comprises an acquisition module, a transmission module and a comparison module;
the acquisition module is used for acquiring the real-time running state of the power system;
the transmission module is used for controlling and transmitting the 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;
and the comparison module is used for comparing the execution operation ticket with a prestored operation ticket by the communication gateway, generating an execution ticket through the compared execution operation ticket and executing the execution ticket, and otherwise, forming a sequential control process message and sending the sequential control process message to the regulation and control system.
Compared with the prior art, the invention has the beneficial effects that:
1. 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;
2. the invention provides a safe intelligent substation sequence control method and system, which shorten the power failure time caused by manual operation, and particularly have obvious effect in a high-voltage substation.
Drawings
FIG. 1 is a flow chart of a method provided by the present invention;
fig. 2 is a diagram of 104 protocol transmission data provided by an embodiment of the present invention;
FIG. 3 is a diagram of sequential control steps provided in accordance with an embodiment of the present invention;
fig. 4 is a system configuration diagram provided by the present invention.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
the invention provides a safe intelligent substation sequence control method and a system, which are introduced by combining a method flow chart provided by the invention in figure 1, and specifically comprise the following steps:
step 1: acquiring a real-time running state of the power system;
step 2: 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;
and step 3: 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;
wherein, the step 1: acquiring a real-time running state of the power system;
the traditional sequential control method is that a sequential control operation order stored in a plant station is uploaded to a dispatching master station end through a file service in a 104 protocol, a regulator verifies the content in the sequential control operation order, an execution command is sent to the plant station after no problem is verified, and the communication network shutdown decomposes and executes the operation. This method requires a great deal of effort by the dispatcher in reviewing the sequence control operation tickets, and also requires the dispatch center to record the names of a large number of sequence control operation tickets. Because the operation ticket formats of each manufacturer are not completely the same, the scheduling end needs to do a lot of work to unify the operation tickets with different formats, and then the unified five-prevention check and other measures for ensuring the operation safety can be carried out, which is not beneficial to the expansion and development of the advanced application of the scheduling end.
The invention adopts a mode of expanding 104 protocols, maps the operation tickets of the scheduling end which are previewed and verified into the standard scheduling 104 protocols, adopts standardized data types to describe in the whole transmission process, can shield the difference of each plant station device, and greatly reduces the workload of the main station system. And different factories at the factory station end analyze the standardized sequence control message according to the technical conditions thereof, and compare the content in the message with the content of the prestored operation order. The method reduces the complexity of the master station system and simultaneously reduces the load of the transmission channel.
The detailed description will be made in conjunction with the 104 protocol transmission data diagram of fig. 2:
1) since the ASDU data types defined in the standard schedule 104 communication protocol cannot express all the contents of the sequence control in the method, the 104 protocol must be expanded in order to complete the remote sequence control. Reserved ASDUs 52, ASDUs 53 and ASDUs 54(52, 53 and 54 are decimal numbers) are selected in the IEC104 protocol control direction for transmitting commands and sequence control information for sequence control, respectively.
The two transmission data types of the ASDU52 and the ASDU53 are respectively used for defining single-interval sequential control and cross-interval sequential control, and single-interval and cross-interval sequential control operation tickets are respectively stored at a station terminal, so that the time for searching the operation tickets after the communication network shutdown receives an operation command can be shortened. Specific definitions of two data types are listed below:
data type: ASDU 52: single interval sequential control; ASDU 53: cross-interval sequential control
Variable qualifier structure: 01H
The transmission reason is as follows: 0600: sequence control activation; 0700: sequence control confirmation; 0800: the sequential control is cancelled; 0A 00: sequence control ends
Information body address: 000000H
Sequential control information element format:
| 8 | 7-1 |
| 1/0 | number of isolating switch |
The sequential control information element uses a plurality of 8-bit bits to express the control content of an interval, the first octet is used for the selection/execution operation of sequential control, the highest 1 represents the sequential control selection, and 0 represents the sequential control execution. The back is provided with a plurality of 8-bit groups to represent the sequence control related intervals, and because some special scheduling names with English letters exist in the power system, when the control information of the related intervals is expressed, an ACSII coding mode is adopted, and each 8-bit group expresses one-bit scheduling number. The ASDU54 data type is used to define the switch blade control order in the sequence control.
Data type: ASDU54
The transmission reason is as follows: 0300: burst/spontaneous
Information body address: three groups of octets
Information body elements:
| 8-2 | 1 |
| retention | 0/1 |
Step 2: 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:
1) referring to the sequence control step diagram of fig. 3, the address of the information body is used to mark the position of the switch or the knife switch in each step of operation in the sequence control in the remote control information point table, the last bit in the element of the information body is used to represent the opening and closing operation of the switch or the knife switch, 1 represents the closing operation, and 0 represents the opening operation. And the plant station end forms a sequential operation order which accords with the technical standard of the plant after receiving the complete operation order and is used for comparing with the operation order prestored in the plant station end.
2) The dispatcher should carefully check the current operation state of the system before performing sequence control, and simulate the operation process and generate a sequence control electronic draft operation order at the dispatching end according to the current operation mode and operation task of the power system.
3) And (4) sending the draft operation ticket to a five-prevention system to carry out logic verification on the whole operation process and checking whether all operation items meet the five-prevention rule or not. If the listed operation contents meet the five-prevention locking logic, carrying out next processing on the draft ticket; if the five-prevention logic is not satisfied, an error operation item is returned, and a sequence control process report file is written, so that a dispatcher can conveniently modify errors in the operation process.
4) And generating an execution operation ticket through the draft ticket subjected to five-prevention verification, and filing and storing after the operation is finished. According to the expansion rule of the IEC104 communication protocol, the sequence control type and the sequence control content in the execution ticket are mapped into the three types of messages, namely ASDU52, ASDU53 and ASDU54, defined in step 1.
And step 3: 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 otherwise forms a sequential control process message to be sent to the regulation and control system:
5) before sending the sequence control command, the master station needs to determine the state of the communication link, determine whether the communication link is complete, and determine whether there is information with higher priority to be transmitted on the link. When the conditions are met, ASDU52 and ASDU53 type messages are sent to the communication network shutdown machine for single-interval or cross-interval sequential control command selection, after the frame information is sent, the master station continues to transmit ASDU54 type messages to the substation, and the message content contains the control sequence and control information of all switch switches in the whole sequential control process.
6) After checking 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 transmitted by the master station is completely consistent with the self-stored operation ticket content in the communication gateway machine, returning a sequence control selection confirmation message to the master station; if the contents are inconsistent, transmitting a sequence control selection failure message to the master station, writing inconsistent information contents in the comparison result into a sequence control process report file, and transmitting the file to the master station by using a file transmission service in an IEC104 protocol for problem analysis and timely arranging operation and maintenance personnel to maintain the equipment.
7) After receiving the sequence control selection acknowledgement message, the master station transmits an ASDU52/53 type message for sequence control execution to the slave station. The communication network shutdown machine decomposes the content of the operation ticket, sends control commands to corresponding measurement and control devices step by step, judges whether the state change of a switch disconnecting link accords with the control commands and whether the change conditions of current and bus voltage in related circuits accord with operation logic after each step of operation is executed, and sends the related control commands to the measurement and control devices if the next step of operation conditions are met; if the condition is not met, the message type is ASDU52/53 sequence control execution failure message, the result of logic verification is written into a sequence control process report file, the message is sent to the master station end by using the file transmission service in the IEC104 protocol, and the operator can perform corresponding processing according to the report content.
8) In the process of executing sequence control by the communication network shutdown, after each step is executed, a certain time interval is reserved before the next step of operation is carried out. The time interval is used for refreshing remote signaling and telemetering data, so that whether logic conditions are met in the next step can be better judged by a communication gateway machine, and a dispatcher can monitor the intermediate process of sequence control and timely send control instructions such as cancellation and emergency stop according to needs or abnormal operation states.
9) After the communication network shutdown executes all operation items in the operation ticket, the state information of the relevant switch disconnecting link, the line current, the bus voltage, the running state of the protection measurement and control device and the like are collected to form a 'sequential control process report' file, the file transmission service in the IEC104 protocol is used for transmitting the file transmission service to the master station, and a sequential control execution completion message with the message type of ASDU52/53 is returned to the master station.
10) After receiving the sequence control assembly success message, the scheduling end stores the sequence control operation order and the sequence control report file sent by the plant station together for filing, thereby providing convenience conditions for later inquiry and retrieval.
The invention provides a remote sequence control method, which ensures the correctness and the accuracy of a sequence control process by various means such as the simulation billing of a main station, the five-prevention check of the main station, the comparison of sequence control tickets, the monitoring in an execution process and the like. The switching of remote definite value district is combined, the operating efficiency of transformer substation can furthest be improved under the prerequisite of guaranteeing safety, the power off time that leads to because of manual operation is shortened.
Example 2:
step 1: since the ASDU data types defined in the standard schedule 104 communication protocol cannot fully express all the contents of the sequence control in the present scheme, the 104 protocol must be expanded in order to complete the remote sequence control. The ASDU52, ASDU53, ASDU54, which employ optional reserved fields in the IEC104 protocol control direction, are used to transmit sequence control commands and sequence control information, respectively.
Step 2: and simulating an operation process and generating a sequential control electronic draft operation order at a dispatching end by a dispatcher according to the current operation mode and operation task of the power system.
And step 3: and (4) the draft operation ticket is delivered to a scheduling five-prevention system to check the whole simulation operation process, and whether all operation items meet the five-prevention rule is checked. If the listed operation items meet the five-prevention locking logic, the draft ticket is processed in the next step; if the five-prevention logic is not satisfied, an error operation item is returned, so that a dispatcher can modify the operation process in time conveniently.
And 4, step 4: and generating an execution ticket through the draft ticket verified by the five-prevention system, and filing and storing after the operation is finished. According to the expansion rule of IEC104 communication protocol, the operation sequence in the execution ticket is mapped to the messages of ASDU52, ASDU53 and ASDU54 data types.
And 5: the master station firstly sends ASDU52 and ASDU53 data type messages to the communication network pipe machine for sequence control selection, and after the frame information is sent, the master station continuously transmits the messages with sequence control information in the ASDU54 to the substation.
Step 6: after checking that the received ASDU54 data type message is correct, the substation compares the sequential operation information in the frame message with the corresponding operation ticket content in the ASDU52/ASDU53 data message. If the operation sequence transmitted by the master station is completely consistent with the self-stored operation ticket content in the communication gateway machine, returning a sequence control selection confirmation message to the master station; if the contents are inconsistent, returning a sequence control selection failure message, forming error contents into a sequence control process report file, and sending the file to the master station end by using a file transmission service in the IEC104 protocol for analyzing specific problems.
And 7: after receiving the sequence control selection acknowledgement message, the master station transmits an ASDU52/53 type message for sequence control execution to the slave station. After receiving the execution message, the communication network pipe machine decomposes the content of the operation ticket, sends control commands to corresponding measurement and control devices step by step, and after each step of operation is executed, the communication network pipe machine judges whether the conditions for executing the next step of operation are met or not according to the state of a switch knife switch, the change conditions of line current and bus voltage, and if the conditions for executing the next step of operation are met; and if the logic verification result is not satisfied, recording the logic verification result into a sequence control process report file, and sending the logic verification result to the master station end by using a file transmission service in the IEC104 protocol, so that an operator can perform corresponding processing according to the report content. And returning a total sequence control failure message to the master station while returning the report, wherein the message type is ASDU 52/53.
And 8: in the process of executing sequential control during the communication network shutdown, a dispatcher needs to monitor the intermediate process and send out operation instructions such as cancellation, emergency stop and the like according to the state of the power grid after each step of execution.
And step 9: after the communication gateway machine executes all operations in the operation ticket, the state information of the relevant switch disconnecting link, the line current, the bus voltage and the operation state of the protection measurement and control device are collected to form a 'sequence control process report' file, and the file transmission service in the IEC104 protocol is used for transmitting the file to the master station. And returning a success message of the sequence control file to the master station while transmitting the report, wherein the message type is ASDU 52/53.
Step 10: after the sequence control assembly success message is received, the scheduling stores the sequence control operation ticket and the report file together for filing, so that the query and the retrieval are facilitated.
The invention provides a remote sequence control method, which ensures the correctness and the accuracy of a sequence control process by various means such as the simulation billing of a main station, the five-prevention check of the main station, the comparison of sequence control tickets, the monitoring in an execution process and the like. The switching of remote definite value district is combined, the operating efficiency of transformer substation can furthest be improved under the prerequisite of guaranteeing safety, the power off time that leads to because of manual operation is shortened.
Example 3:
1. a safe intelligent substation sequence control method comprises the following steps:
step 1: the IEC-60970-5-104 protocol is expanded to meet the requirement of the invention on the transmission sequence control related content;
step 2: a dispatcher simulates an operation process at a dispatching end and generates a sequential control electronic draft operation order according to the current operation mode and operation task of the power system;
and step 3: the draft operation ticket is sent to a scheduling five-prevention system for five-prevention rule verification, and corresponding processing is carried out according to a verification result;
and 4, step 4: according to the expansion rule of the IEC104 communication protocol, mapping the operation sequence in the execution ticket to the messages of the data types of the ASDU52, the ASDU53 and the ASDU 54;
and 5: according to the relevant state of a communication link, a scheduling master station transmits 104 sequence control messages of ASDU52, ASDU53 and ASDU54 data types to a station communication network shutdown machine for selection operation of sequence control;
step 6: the communication gateway machine checks the sequence control content according to the received sequence control message, if the sequence control content passes the check, the communication gateway machine returns a sequence control selection confirmation message to the master station, and if the sequence control selection confirmation message does not pass the check, the communication gateway machine returns a sequence control selection failure message;
and 7: and after receiving the sequence control selection confirmation message, the scheduling end sends a sequence control execution message to the station end. The plant station performs decomposition and execution on the sequence control operation order, judges the execution result of each step, and can perform one-step sequence control if the conditions are met;
and 8: in the process of executing sequential control by the communication network shutdown machine, a dispatcher needs to monitor the intermediate process and sends out operation instructions such as cancellation, emergency stop and the like according to the state of the power grid after each step of execution;
and step 9: after the communication gateway machine executes all operations in the operation ticket, acquiring state information of a related switch disconnecting link, line current, bus voltage and operation states of a protection measurement and control device to form a 'sequence control process report' file, and sending the file to a master station end by using a file transmission service in an IEC104 protocol;
step 10: after the sequence control assembly success message is received, the scheduling stores the sequence control operation ticket and the report file together for filing, so that the query and the retrieval are facilitated.
2. A method for safe intelligent substation sequence control according to claim 1, characterized by: step 1, the IEC-60970-5-104 protocol is extended, and ASDU52, ASDU53, and ASDU54, which select reserved fields in the control direction, are used to transmit sequence control commands and sequence control information, respectively.
3. A method for safe intelligent substation sequence control according to claim 1, characterized by: and 4, mapping the execution operation ticket of the five-prevention system to the newly defined data type in the step 1, and shielding the difference of each station device by adopting the method, thereby reducing the complexity of the main station system and reducing the load of a transmission channel.
4. A method for safe intelligent substation sequence control according to claim 1, characterized by: and 5, scheduling, wherein the process similar to remote control operation is adopted in the process of finishing the whole sequence control, and a sequence control process report file is added for recording relevant information in the whole sequence control process.
5. A method for safe intelligent substation sequence control according to claim 1, characterized by: and 6, comparing with the traditional sequential control, after each step of manufacturing is executed, the communication gateway judges whether the conditions for executing the next operation are met or not according to the states of the switch disconnecting link, the line current and the bus voltage, the conditions are automatically executed, and manual intervention is not needed.
Example 4:
based on the same inventive concept, the invention provides a safe intelligent substation sequence control system, which is introduced by combining the system structure diagram of fig. 4, and comprises the following steps: the device comprises an acquisition module, a transmission module and a comparison module;
the acquisition module is used for acquiring the real-time running state of the power system;
the transmission module is used for controlling and transmitting the 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;
and the comparison module is used for comparing the execution operation ticket with a prestored operation ticket by the communication gateway, generating an execution ticket through the compared execution operation ticket and executing the execution ticket, and otherwise, forming a sequential control process message and sending the sequential control process message to the regulation and control system.
Preferably, the transfer module includes: pre-expanding a submodule and a protocol message submodule;
the pre-expansion submodule is used for expanding the 104 protocol;
and the protocol message submodule is used for controlling and transmitting a control message formed by the execution operation order to a communication gateway based on the 104 protocol after the pre-expansion, and mapping the task content of the execution operation order to the message of the type corresponding to the 104 protocol based on the 104 protocol after the pre-expansion.
Preferably, the pre-expansion submodule includes: an ASDU52 unit, an ASDU53 unit, and an ASDU54 unit;
the ASDU52 unit, which is used for transmitting data defining single interval sequence control;
the ASDU53 unit, which is used for transmitting data defining the cross-interval sequence control;
the ASDU54 unit is used for transmitting data defining the sequence of switch blade control in sequence control;
the execution operation tickets or execution tickets transmitted at the single interval and the execution operation tickets or execution tickets transmitted at the cross intervals are respectively stored in the regulation and control system;
wherein the ASDU52 unit and the ASDU53 unit each include: a transmission reason, a variable qualifier structure, a body address, and a sequence control information element format;
the transmission reason includes: sequence control activation, sequence control confirmation, sequence control revocation and sequence control termination.
Preferably, the sequential control information element format includes:
the sequential control information element expresses the control content of an interval by a plurality of 8-bit groups:
the first eight bits are used for selection or execution of sequential control, the highest 1 represents sequential control selection, and 0 represents sequential control execution;
the latter 8-bit groups represent sequential control correlation intervals, control information of the correlation intervals adopts an ACSII coding mode, and each 8-bit group expresses a one-bit scheduling number.
Preferably, the ASDU54 unit includes: burst or spontaneous transmission cause, body address and body element.
Preferably, the alignment module includes: the comparison passing submodule and the comparison failing submodule;
the comparison passing sub-module is used for generating an execution ticket from the compared execution operation ticket and executing the execution ticket;
and the comparison failed submodule is used for forming a sequential control process message by the failed operation tickets and sending the sequential control process message to the regulation and control system.
Preferably, the alignment is by a submodule comprising: the step-by-step transmission unit, the step-by-step judgment unit, the corresponding execution unit and the storage unit;
the step-by-step sending unit is used for the communication gateway machine to step by step through the compared execution operation tickets and send control commands to the corresponding measurement and control devices in the regulation and control system step by step;
the step-by-step judgment unit is used for judging whether the state information, the line current and the bus voltage of the switch disconnecting link conform to the control command or not by the communication gateway machine after the control command is executed each time;
the conforming execution unit is used for sending the control command to the corresponding measurement and control device in the regulation and control system and executing the control command in the next step if the result conforms to the result;
and the storage unit is used for storing the execution ticket and the message of the execution ticket into the regulation and control system after the execution is finished.
Preferably, the system further comprises: the system comprises a draft module, a five-prevention checking module and a link judging module;
the draft module is used for generating an electronic draft operation ticket based on the current operation mode of the power system and the operation task of the transformer substation;
the five-prevention verification module is used for verifying the five-prevention rule of the electronic draft operation ticket by a regulation and control system of the transformer substation and generating an execution operation ticket of the verified electronic draft operation ticket;
and the link judgment module is used for judging whether a communication link for transmitting the content in the 104 protocol is complete or not and whether information with higher priority needs to be transmitted or not by the regulation and control system.
Preferably, the five-prevention verification module includes: the checking passing sub-module and the checking failing sub-module;
the verification passing sub-module is used for forming the execution operation ticket passing the verification into a control message;
and the verification failed sub-module is used for returning the electronic draft operation ticket which is failed to be verified to the error operation item of the electronic draft operation ticket for modification operation, and continuing verification after modification.
Preferably, the link determining module includes: a complete judgment submodule and a priority transmission submodule;
the integrity judgment submodule is used for judging whether a communication link for transmitting the 104 protocol is intact or not by the regulation and control system, if so, transmitting the communication link, and otherwise, not transmitting the communication link;
the priority transmission submodule is used for judging whether the 104 protocol is transmitted with information with higher priority to be transmitted, and if the 104 protocol has the priority to be transmitted, the information with higher priority is transmitted first.
As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or 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, and the like) 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 application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The present invention is not limited to the above embodiments, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention are included in the scope of the claims of the present invention which are filed as the application.
Claims (11)
1. A safe intelligent substation sequence control method is characterized by comprising 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;
and 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 otherwise forms a sequential control process message and sends the sequential control process message to the regulation and control system.
2. The method of claim 1, wherein said controlling the transmission of said execution operation ticket to a communication gateway based on said 104 protocol sequence after pre-expansion comprises:
and controlling and transmitting a control message formed by the execution operation order to a communication gateway based on the pre-expanded 104 protocol sequence, and mapping the task content of the execution operation order to the message of the type corresponding to the 104 protocol.
3. The method of claim 2, wherein said pre-expanding 104 specification comprises:
transmitting data defining single interval sequential control based on the ASDU 52;
transmitting data defining sequential control across intervals based on the ASDUs 53;
transmitting data defining the sequence of switch knife control in sequence control based on the ASDU 54;
the execution operation tickets or execution tickets transmitted at the single interval and the execution operation tickets or execution tickets transmitted at the cross intervals are respectively stored in the regulation and control system;
wherein, the ASDU52 and the ASDU53 both comprise: a transmission reason, a variable qualifier structure, a body address, and a sequence control information element format;
the transmission reason includes: sequence control activation, sequence control confirmation, sequence control revocation and sequence control termination.
4. The method of claim 3, wherein the sequential control information element format comprises:
the sequential control information element expresses the control content of an interval by a plurality of 8-bit groups:
the first eight bits are used for selection or execution of sequential control, the highest 1 represents sequential control selection, and 0 represents sequential control execution;
the latter 8-bit groups represent sequential control correlation intervals, control information of the correlation intervals adopts an ACSII coding mode, and each 8-bit group expresses a one-bit scheduling number.
5. The method of claim 3, wherein the ASDU54 comprises:
burst or spontaneous transmission cause, body address and body element.
6. The method of claim 1, wherein the power system real-time operating state comprises: and state information of the relevant switch knife switch, line current, bus voltage and the running state of the protection measurement and control device.
7. The method of claim 1, wherein generating the execution ticket execution from the compared execution operation tickets comprises:
the communication gateway machine carries out step-by-step operation through the compared execution operation tickets and sends control commands to the corresponding measurement and control devices in the regulation and control system step by step;
after the control command is executed each time, the communication gateway machine judges whether the state information of the switch disconnecting link, the line current and the bus voltage accord with the control command or not;
if the result is consistent, the next step is carried out, the control command is sent to the corresponding measurement and control device in the regulation and control system, and the control command is executed;
and after the execution is finished, the execution ticket and the message of the execution ticket are stored in the regulation and control system.
8. The method of claim 1, wherein prior to said controlling delivery of an execution ticket to a communications gateway based on said real-time operating state of said power system and said pre-expanded 104 protocol sequence, comprising:
generating an electronic draft operation ticket based on the current operation mode of the power system and the operation task of the transformer substation;
and the regulation and control system of the transformer substation carries out five-prevention rule verification on the electronic draft operation ticket and generates an execution operation ticket according to the verified electronic draft operation ticket.
9. The method of claim 8, wherein the verifying the electronic draft operation ticket against the five-prevention rule and generating the electronic draft operation ticket passing the verification into an execution operation ticket comprises:
forming a control message by the verified execution operation ticket;
returning the electronic draft operation ticket which is not verified to the error operation item of the electronic draft operation ticket for modification operation, and continuing verification after modification;
the verified electronic draft operation ticket comprises the verified execution operation ticket and the electronic draft operation ticket which is not verified.
10. The method of claim 8, wherein before said controlling the transmission of said execution operation ticket to the communication gateway based on said 104 protocol sequence after pre-expansion, further comprises:
the regulation and control system judges whether a communication link for transmitting the 104 protocol is complete, if so, the communication link is transmitted, otherwise, the communication link is not transmitted;
and judging whether the information with higher priority is transmitted in the 104 protocol, if so, transmitting the information with higher priority first.
11. A safe intelligent substation sequence control system is characterized by comprising: the device comprises an acquisition module, a transmission module and a comparison module;
the acquisition module is used for acquiring the real-time running state of the power system;
the transmission module is used for controlling and transmitting the 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;
and the comparison module is used for comparing the execution operation ticket with a prestored operation ticket by the communication gateway, generating an execution ticket through the compared execution operation ticket and executing the execution ticket, and otherwise, forming a sequential control process message and sending the sequential control process message to the regulation and control system.
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| CN202010179840.4A CN111478433A (en) | 2020-03-16 | 2020-03-16 | Safe intelligent substation sequence control method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112104075A (en) * | 2020-09-07 | 2020-12-18 | 南京南瑞继保电气有限公司 | Sequential control operation order uninterrupted checking method and system based on remote control message comparison of measurement and control device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112104075A (en) * | 2020-09-07 | 2020-12-18 | 南京南瑞继保电气有限公司 | Sequential control operation order uninterrupted checking method and system based on remote control message comparison of measurement and control device |
| CN112104075B (en) * | 2020-09-07 | 2022-08-26 | 南京南瑞继保电气有限公司 | Sequential control operation order uninterrupted checking method and system based on remote control message comparison of measurement and control device |
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