CN106209418A - A kind of intelligent substation GOOSE message simulation generates and detection method - Google Patents
A kind of intelligent substation GOOSE message simulation generates and detection method Download PDFInfo
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- 238000001514 detection method Methods 0.000 title claims abstract description 52
- 238000004088 simulation Methods 0.000 title claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 18
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000004891 communication Methods 0.000 claims description 25
- 239000011800 void material Substances 0.000 claims description 5
- 238000012423 maintenance Methods 0.000 claims description 4
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- 238000012360 testing method Methods 0.000 abstract description 7
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- 238000005516 engineering process Methods 0.000 description 2
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/14—Network analysis or design
- H04L41/145—Network analysis or design involving simulating, designing, planning or modelling of a network
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- H02J13/0013—
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/0604—Management of faults, events, alarms or notifications using filtering, e.g. reduction of information by using priority, element types, position or time
- H04L41/0622—Management of faults, events, alarms or notifications using filtering, e.g. reduction of information by using priority, element types, position or time based on time
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/06—Management of faults, events, alarms or notifications
- H04L41/069—Management of faults, events, alarms or notifications using logs of notifications; Post-processing of notifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing data switching networks
- H04L43/08—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters
- H04L43/0823—Errors, e.g. transmission errors
- H04L43/0829—Packet loss
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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Abstract
The present invention relates to a kind of message simulation generate and detection method, belong to intelligent grid field, be specifically related to a kind of intelligent substation GOOSE message simulation and generate and detection method.Including: GOOSE simulates and generates and detection device, is placed in process layer and/or wall, is used for receiving parsing, generating transmission GOOSE message；Wherein: when described GOOSE simulation generates and is positioned at process layer with detection device, receive the GOOSE message carrying trip signal, send the GOOSE message carrying circuit-breaker status information；When described GOOSE simulation generates and is positioned at wall with detection device, send the GOOSE message carrying trip signal, receive the GOOSE message carrying circuit-breaker status information.Therefore, present invention have the advantage that and be capable of the GOOSE message of cell device with process layer device is sent the test with receive capabilities, improve efficiency and the standardization of intelligent substation test.
Description
Technical field
The present invention relates to a kind of message simulation generate and detection method, belong to intelligent grid field, be specifically related to a kind of intelligence
Can transformer station's GOOSE message simulation generate and detection method.
Background technology
(Generic Object Oriented Substation Event, towards transformer station's thing of general object for GOOSE
Part) be a kind of rapid message transmission mechanism of regulation in IEC61850, be used for transmitting in intelligent substation IED (smart machine) it
Between signal of interest (such as breaker tripping and closing order).The hardwire that GOOSE uses network service to replace between tradition transforming plant apparatus leads to
Letter, simplifies the secondary connection of transformer station.The device sent and receive GOOSE message specifically includes that cell device is (such as protection
Device and measure and control device) and process layer device (such as intelligent terminal).
In order to ensure the normal work of intelligent substation, need the transmission to cell device and process layer device and reception
The function of GOOSE message is tested.How to be capable of cell device and process layer device being sent and receiving GOOSE report
The function of literary composition is rapidly and effectively tested, and is those skilled in the art's technical issues that need to address.
Summary of the invention
The present invention mainly solves being difficult to existing for prior art and cell device and process layer device is sent and connect
Receive the problem that the function of GOOSE message is quickly tested, it is provided that a kind of intelligent substation GOOSE message simulation generates and inspection
Survey method.The method is capable of the GOOSE message of cell device with process layer device is sent the test with receive capabilities,
Improve efficiency and the standardization of intelligent substation test.
The above-mentioned technical problem of the present invention is mainly addressed by following technical proposals:
A kind of intelligent substation GOOSE message simulation generates and detection method, including:
GOOSE simulates and generates and detection device, is placed in process layer and/or wall, is used for receiving parsing, generating transmission
GOOSE message；Wherein:
When described GOOSE simulation generates and is positioned at process layer with detection device, receive the GOOSE report carrying trip signal
Literary composition, sends the GOOSE message carrying circuit-breaker status information；
When described GOOSE simulation generates and is positioned at wall with detection device, send the GOOSE report carrying trip signal
Literary composition, receives the GOOSE message carrying circuit-breaker status information.
Optimizing, above-mentioned a kind of intelligent substation GOOSE message simulation generates and detection method, and described GOOSE simulates
Generate and perform following steps generation with detection device and receive GOOSE message:
A1: resolve intelligent substation SCD configuration file, obtains GOOSE message data set information about firms；
The simulation of a2:GOOSE message generates and initializes with detection device void terminal；
The communication function that the simulation of a3:GOOSE message generates with detection device initializes；
A4: judge whether to receive GOOSE message, if yes then enter step a5, if otherwise entering step a6；
A5: resolve the GOOSE message received；
A6: whether the communication of judging is interrupted, if yes then enter step a8, if otherwise entering step a7；
A7: judge whether message dropping, if yes then enter step a9, if otherwise entering step a10；
A8: device sends communication disruption and reports to the police；
A9: device sends message dropping and reports to the police；
A10: generate GOOSE message；
A11: judge whether the value of data set member changes, if yes then enter step a13, if otherwise entering step
Rapid a12；
A12: send GOOSE message for the cycle with 5000ms, is then back to step a4；
A13: continuously repeat 5 GOOSE message of transmission, be spaced apart 2ms, 2ms, 4ms, 8ms；After having sent, return step
a4。
Optimizing, above-mentioned a kind of intelligent substation GOOSE message simulation generates and detection method, uses Ethernet data
Frame transmits application layer protocol data cell GOOSE-PDU of GOOSE, and GOOSE-PDU is positioned over the application data of Frame
In field, wherein, the structure of described GOOSE message is:
Address for the purpose of 1st field, a length of 6 bytes；2nd field source address, a length of 6 bytes；3rd field
Identify for priority tag, a length of 2 bytes；4th field is tag control information, a length of 2 bytes；5th field is
Ethernet type, a length of 2 bytes, value is fixed as 0x88B8；6th field is application identities, a length of 2 bytes, the 7th word
Section is length, a length of 2 bytes；8th, 9 fields are the first reserved bit, the second reserved bit, and length is respectively 2 bytes；10th word
Section is GOOSE-PDU.
Optimizing, above-mentioned a kind of intelligent substation GOOSE message simulation generates and detection method, in GOOSE message
Application layer protocol data cell GOOSE-PDU form is:
1st field is the Tag value of GOOSE-PDU, and a length of 1 byte, value is fixed as 0x61；2nd field is
The length value of GOOSE-PDU, value has two kinds of selections: long the form more than short format of 1 byte and 2 bytes；
3rd field is the content of GOOSE-PDU, is made up of successively following 12 fields: GOOSE controls block and quotes, reports
Literary composition allows life span, the quoting of GOOSE data set, GOOSE message mark, event markers, number of state indexes, serial number, maintenance
Mark, configuration version number, configuration needs, data set entry and data.
Optimizing, above-mentioned a kind of intelligent substation GOOSE message simulation generates and detection method, and described GOOSE simulates
Generate and include, with lower module, being used for detection device
Configuration file parsing module, is used for resolving intelligent substation SCD configuration file, obtains GOOSE message data integration
Member's information；
Terminal initialization module, generates for GOOSE message simulation and initializes with detection device void terminal；
Communication initialization module, the communication function generated with detection device for GOOSE message simulation initializes；
Message receiver module, is used for judging whether to receive GOOSE message, if it is enters to call packet parsing module,
If for otherwise calling communication detection module；
Packet parsing module, for resolving the GOOSE message received；
Communication check module, whether being used for judges to communicate interrupts, if it is calling communication alarm module, for if not
Then call message dropping detection module；
Message dropping detection module, is used for judging whether message dropping, if it is calls, if otherwise called
GOOSE message generation module；
Communication alarm module, is used for sending communication disruption and reports to the police；
Message dropping alarm module, sends message dropping for device and reports to the police；
GOOSE message generation module, is used for generating GOOSE message；
Data variation detection module, for judging whether the value of data set member changes, if it is calls continuously
Sending module, if for otherwise calling cycle sending module；
Cycle sending module, for sending GOOSE message with 5000ms for the cycle, then calls message receiver module；
Continuously transmit module, be used for continuously repeating 5 GOOSE message of transmission, be spaced apart 2ms, 2ms, 4ms, 8ms；Send
After complete, call message receiver module.
Therefore, present invention have the advantage that and be capable of the GOOSE message of cell device with process layer device is sent out
Send the test with receive capabilities, improve efficiency and the standardization of intelligent substation test.
Accompanying drawing explanation
The simulation of Fig. 1 intelligent substation GOOSE message generates and detection device position in Substation Communication System.
The structure of Fig. 2 GOOSE message.
The structure of Fig. 3 GOOSE-PDU.
The simulation of Fig. 4 intelligent substation GOOSE message generates and the flow process of detection.
Detailed description of the invention
Below by embodiment, and combine accompanying drawing, technical scheme is described in further detail.
Embodiment:
As it is shown in figure 1, the simulation of intelligent substation GOOSE message generates and detection device, both can be used to simulation process
Bed device such as intelligent terminal, it is possible to dummy spacers bed device such as protection device and measure and control device.In intelligent substation GOOSE message
Simulation generate with detection unit simulation intelligent terminal time, reception is the GOOSE message carrying trip signal, and transmission is to take
GOOSE message with circuit-breaker status information；Simulation in intelligent substation GOOSE message generates and detection unit simulation mistake
During journey bed device, transmission is the GOOSE message carrying trip signal, reception carry circuit-breaker status information
GOOSE message.
As in figure 2 it is shown, when generating GOOSE message, use the ethernet data frame of ISO/IEC8802-3 standard to transmit
Application layer protocol data cell GOOSE-PDU of GOOSE, IEC61850 specifies, GOOSE-PDU is positioned over the application of Frame
In data field.The structure of GOOSE message is as follows: address for the purpose of the 1st field, a length of 6 bytes；2nd field seedbed
Location, a length of 6 bytes；3rd field is priority tag mark, a length of 2 bytes；4th field is tag control information,
A length of 2 bytes；5th field is ethernet type, and a length of 2 bytes, value is fixed as 0x88B8；6th field is application
Mark, a length of 2 bytes, the 7th field is length, a length of 2 bytes；8th, 9 fields are reserved bit 1, reserved bit 2, long
Degree is respectively 2 bytes；10th field is GOOSE-PDU.Carrying out GOOSE message parsing when, enter by the structure of GOOSE message
Row resolves.
As it is shown on figure 3, when generating GOOSE message, by the application layer protocol number of ASN.1 grammar rule definitions GOOSE
According to unit AP DU (GOOSE-PDU).In GOOSE-PDU: the 1st field is the Tag value of GOOSE-PDU, a length of 1 byte, value
It is fixed as 0x61；2nd field is the length value of GOOSE-PDU, and value has two kinds of selections: more than the short format of 1 byte and 2 bytes
Long form, in ASN.1 grammer, the unit of length value is byte；3rd field is the content of GOOSE-PDU, successively by GOOSE
Control that block is quoted, message allows life span, the quoting of GOOSE data set, GOOSE message mark, event markers, state sequence
Number, these 12 fields compositions of serial number, maintenance mark, configuration version number, configuration needs, data set entry and data, each word
Section is all made up of Tag, length and content.
It is 0x80 that GOOSE control block quotes the Tag value of (gocbRef), and its content is by the implementor name in hierarchical logic, logic
Node name, functional restraint and control block name composition, use ACII representation.
Message allows the Tag value of life span (timeAllowedtoLive) to be 0x81, and its content shaping represents, single
Position is ms.
The Tag value quoting (datSet) of GOOSE data set is 0x82, and its content is by implementor name, logical node name sum
Form according to set name, use ACII representation.
The Tag value of GOOSE message mark (goID) is 0x83, and its content is the unique identification of each GOOSE message,
The content of GOOSE message mark is defaulted as GOOSE control block and quotes the content of (gocbRef), uses ACII representation.
The Tag value of event markers (t) is 0x84, and its content is the difference of current time and day in January, 1970 00:00:00,
Representing with shaping, unit is s, and content is finally with byte representation time quality.
The Tag value of number of state indexes (StNum) is 0x85, and its content occurs the number of times of displacement for recording GOOSE data, uses
Shaping represents, scope is 1-4294967295；When device powers on, StNum=1, the GOOSE data set member of the first frame message
Value often change once, StNum adds 1.
The Tag value of serial number (SqNum) is 0x86, and its content, for recording the number of times that message under stable situation sends, is used
Shaping represents, scope is 0-4294967295；Device often sends a frame GOOSE message, and SqNum adds 1, becomes when there being GOOSE data
During change, SqNum returns 0.
The Tag value of maintenance mark (Test) is 0x87, and length value is 0x01, and its content is used for representing transmission GOOSE message
Device whether be in inspecting state, represent with Boolean type.
The Tag value of configuration version number (confRev) is 0x88, and its content is used for representing that the configuration of GOOSE data set is changed
Number of times, represent with shaping.
The Tag value of configuration needs (ndsCom) is 0x89, and length value is 0x01.Its content is used for representing whether GOOSE needs
To configure further, to represent with Boolean type.
The Tag value of data set entry (numDatSetEntries) is 0x8a, the membership of its internal representation data collection,
Represent with shaping.
The Tag value of data (allData) is 0xab, its content by each member fields of data set, each field by Tag,
Length and content composition.When GOOSE message carries breaker tripping and closing order, the Tag value of data set member is 0x83, and length value is
0x01, its content is used for representing breaker tripping and closing order, and 0x00 represents that tripping operation, 0x01 represent combined floodgate；When GOOSE message carries chopper
During status information, the Tag value of data set member is 0x85, and length value is 0x01, and its content is used for representing circuit-breaker status, 0x00
Point position, 0x01 closes position, 0x02 represents that intermediateness, 0x3 represent damage.
As shown in Figure 4, specific implementation method is as follows:
A1: resolve intelligent substation SCD configuration file, obtains GOOSE message data set information about firms；
The simulation of a2:GOOSE message generates and initializes with detection device void terminal；
The communication function that the simulation of a3:GOOSE message generates with detection device initializes；
A4: judge whether to receive GOOSE message, if yes then enter step a5, if otherwise entering step a6；
A5: resolve the GOOSE message received；
A6: whether the communication of judging is interrupted, if yes then enter step a8, if otherwise entering step a7；
A7: judge whether message dropping, if yes then enter step a9, if otherwise entering step a10；
A8: device sends communication disruption and reports to the police；
A9: device sends message dropping and reports to the police；
A10: generate GOOSE message；
A11: judge whether the value of data set member changes, if yes then enter step a13, if otherwise entering step
Rapid a12；
A12: send GOOSE message for the cycle with 5000ms, is then back to step a4；
A13: continuously repeat 5 GOOSE message of transmission, be spaced apart 2ms, 2ms, 4ms, 8ms；After having sent, return step
a4。
Wherein:
In step a6, when distance the last time receive the GOOSE message time more than 1s time, device judges communication disruption.Step
In rapid a7, when in the GOOSE message that in this GOOSE message received, StNum and last time time receive, the difference of StNum is more than
When 1, or when in this GOOSE message received SqNum be not 0 and with the difference of SqNum in the GOOSE message received last time
During more than 1, device judges to there is message dropping.
In step a12, whether device judging distance sent more than 5000ms last time, if it is send GOOSE message and
Rear return step a4, directly returns step a4 if not sending.In step a13, device prolongs after the 1st GOOSE message
2ms sends GOOSE message the 2nd time late, the 3rd transmission GOOSE message of delay 2ms after sending GOOSE message at the 2nd time, the 3rd time
After sending GOOSE message, time delay 4ms the 4th sends GOOSE message, and after the 4th sends GOOSE message, time delay 8ms the 5th sends
GOOSE message, sends for 5 times and returns step a4 after being fully completed.
Specific embodiment described herein is only to present invention spirit explanation for example.Technology neck belonging to the present invention
Described specific embodiment can be made various amendment or supplements or use similar mode to replace by the technical staff in territory
Generation, but without departing from the spirit of the present invention or surmount scope defined in appended claims.
Claims (5)
1. an intelligent substation GOOSE message simulation generates and detection method, it is characterised in that including:
GOOSE simulates and generates and detection device, is placed in process layer and/or wall, is used for receiving parsing, generating transmission GOOSE
Message；Wherein:
When described GOOSE simulation generates and is positioned at process layer with detection device, receive the GOOSE message carrying trip signal, send out
Send the GOOSE message carrying circuit-breaker status information；
When described GOOSE simulation generates and is positioned at wall with detection device, send the GOOSE message carrying trip signal, connect
Receive the GOOSE message carrying circuit-breaker status information.
A kind of intelligent substation GOOSE message simulation the most according to claim 1 generates and detection method, and its feature exists
In, described GOOSE simulation generation and detection device perform following steps and generate and reception GOOSE message:
A1: resolve intelligent substation SCD configuration file, obtains GOOSE message data set information about firms；
The simulation of a2:GOOSE message generates and initializes with detection device void terminal；
The communication function that the simulation of a3:GOOSE message generates with detection device initializes；
A4: judge whether to receive GOOSE message, if yes then enter step a5, if otherwise entering step a6；
A5: resolve the GOOSE message received；
A6: whether the communication of judging is interrupted, if yes then enter step a8, if otherwise entering step a7；
A7: judge whether message dropping, if yes then enter step a9, if otherwise entering step a10；
A8: device sends communication disruption and reports to the police；
A9: device sends message dropping and reports to the police；
A10: generate GOOSE message；
A11: judge whether the value of data set member changes, if yes then enter step a13, if otherwise entering step
a12；
A12: send GOOSE message for the cycle with 5000ms, is then back to step a4；
A13: continuously repeat 5 GOOSE message of transmission, be spaced apart 2ms, 2ms, 4ms, 8ms；After having sent, return step a4.
A kind of intelligent substation GOOSE message simulation the most according to claim 1 generates and detection method, and its feature exists
In,
Use ethernet data frame to transmit application layer protocol data cell GOOSE-PDU of GOOSE, GOOSE-PDU is placed
In the application data field of Frame, wherein, the structure of described GOOSE message is:
Address for the purpose of 1st field, a length of 6 bytes；2nd field source address, a length of 6 bytes；3rd field is excellent
First level tag identifier, a length of 2 bytes；4th field is tag control information, a length of 2 bytes；5th field is ether
Net type, a length of 2 bytes, value is fixed as 0x88B8；6th field is application identities, a length of 2 bytes, and the 7th field is
Length, a length of 2 bytes；8th, 9 fields are the first reserved bit, the second reserved bit, and length is respectively 2 bytes；10th field is
GOOSE-PDU。
A kind of intelligent substation GOOSE message simulation the most according to claim 1 generates and detection method, and its feature exists
In, the application layer protocol data cell GOOSE-PDU form in GOOSE message is:
1st field is the Tag value of GOOSE-PDU, and a length of 1 byte, value is fixed as 0x61；2nd field is GOOSE-PDU
Length value, value has two kinds of selections: long the form more than short format of 1 byte and 2 bytes；
3rd field is the content of GOOSE-PDU, is made up of successively following 12 fields: GOOSE control block is quoted, message is permitted
Permitted life span, the quoting of GOOSE data set, GOOSE message mark, event markers, number of state indexes, serial number, maintenance identify,
Configuration version number, configuration needs, data set entry and data.
A kind of intelligent substation GOOSE message simulation the most according to claim 1 generates and detection method, and its feature exists
In, described GOOSE simulation generates and includes, with lower module, being used for detection device
Configuration file parsing module, is used for resolving intelligent substation SCD configuration file, obtains GOOSE message data set member letter
Breath；
Terminal initialization module, generates for GOOSE message simulation and initializes with detection device void terminal；
Communication initialization module, the communication function generated with detection device for GOOSE message simulation initializes；
Message receiver module, is used for judging whether to receive GOOSE message, if it is enters to call packet parsing module, is used for
If otherwise calling communication detection module；
Packet parsing module, for resolving the GOOSE message received；
Communication check module, whether being used for judges to communicate interrupts, if it is calling communication alarm module, if for otherwise adjusting
Use message dropping detection module；
Message dropping detection module, is used for judging whether message dropping, if it is calls, if otherwise calling GOOSE
Message generation module；
Communication alarm module, is used for sending communication disruption and reports to the police；
Message dropping alarm module, sends message dropping for device and reports to the police；
GOOSE message generation module, is used for generating GOOSE message；
Data variation detection module, for judging whether the value of data set member changes, if it is calls and continuously transmits
Module, if for otherwise calling cycle sending module；
Cycle sending module, for sending GOOSE message with 5000ms for the cycle, then calls message receiver module；
Continuously transmit module, be used for continuously repeating 5 GOOSE message of transmission, be spaced apart 2ms, 2ms, 4ms, 8ms；After having sent,
Call message receiver module.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106953813A (en) * | 2017-03-14 | 2017-07-14 | 哈尔滨工业大学 | A kind of GOOSE message receive-transmit system and its control method |
| CN107835091A (en) * | 2017-09-29 | 2018-03-23 | 中国电力科学研究院 | The process-level network data parameters optimization method and system of a kind of intelligent substation |
| CN110995588A (en) * | 2019-12-25 | 2020-04-10 | 华南理工大学 | Method suitable for converting GOOSE message into R-GOOSE message |
| CN112491811A (en) * | 2020-11-10 | 2021-03-12 | 南京国电南自电网自动化有限公司 | SV-GSE automatic transmutation method and system for process layer of relay protection device |
| CN114268571A (en) * | 2017-02-15 | 2022-04-01 | 西门子公司 | Test method, device and system |
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