CN109698734A - Abnormal judgment method based on GOOSE dual-network receiving mechanism - Google Patents
Abnormal judgment method based on GOOSE dual-network receiving mechanism Download PDFInfo
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- 230000005856 abnormality Effects 0.000 claims description 14
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0056—Systems characterized by the type of code used
- H04L1/0061—Error detection codes
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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
- H04L41/0631—Management of faults, events, alarms or notifications using root cause analysis; using analysis of correlation between notifications, alarms or events based on decision criteria, e.g. hierarchy, tree or time analysis
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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
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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
- H04L43/0805—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability
- H04L43/0811—Monitoring or testing based on specific metrics, e.g. QoS, energy consumption or environmental parameters by checking availability by checking connectivity
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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
- H04L43/10—Active monitoring, e.g. heartbeat, ping or trace-route
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
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Abstract
The invention discloses an abnormity judgment method based on a GOOSE dual-network receiving mechanism, which comprises the steps of processing a GOOSE network storm, counting GOOSE frames in each second, judging whether the network storm exists or not, and filtering storm messages by a CRC (cyclic redundancy check) filtering method to ensure the transmission of normal GOOSE frames; secondly, processing the GOOSE abnormal messages, independently counting the abnormal judgment of StNum and SqNum of the GOOSE messages in each network to select correct GOOSE messages, if the two networks are abnormal at the same time, considering that the opposite side is restarted or the network loses frames, and receiving message updating data; and thirdly, processing the heterogeneous source data, and judging whether the heterogeneous source data caused by configuration errors exists on the network or not by counting the GOOSE heartbeat messages. The method of the invention finds the abnormity in time and informs the operation and maintenance personnel to provide a solution.
Description
Technical field
Present invention relates particularly to a kind of abnormality judgment method based on the bis- net reception mechanisms of GOOSE, belong to electric system after
Electric protection technical field.
Background technique
The relationships such as the starting in Digitized transformation between protective device and intelligent terminal, protective device, movement, tripping at present
Important information to safe operation of electric network is all made of GOOSE mode and transmits, and GOOSE transmission is not had based on publication and subscribing mode
There is mutual affirmation mechanism.It can only guarantee the reliability of GOOSE signal by double net transmission, retransmission mechanism.
The normal bis- net reception mechanisms of GOOSE are: 1) when receiving StNum greater than the machine StNum, updating GOOSE data.2) when
It receives StNum and is less than the machine StNum, if publication end device is restarted, more new data.Conversely, abandoning data.3) as reception StNum
Equal to the machine StNum, judges that SqNum, SqNum become larger and abandon data.SqNum is constant or becomes smaller, if publication end device is restarted, more
New data.Conversely, abandoning data.
It is that publishing side sends StNum=1 that the criterion restarted of end device is issued in the above method, the message of SqNum=1, once
Network Abnormal, which may cause, in publishing side message exception or substation restarts message loss, for a long time not so as to cause GOOSE message
It can update, protection cannot be acted correctly when failure occurs.
In addition the above method is not account for reality based on the reception mechanism of GOOSE transmission under normal circumstances in substation
Reception under the uncertainty at border scene, such as network storm, interchanger exception, unexpected message, different source data abnormal conditions
Judgment mechanism.And GOOSE message transmission is the important information for being related to power grid security, once there is above situation, protection dress
Setting through current double net judgment mechanisms is that not can guarantee correctly to act.After unusual condition disappears, protective device can not be certainly
It is dynamic to restore the original bis- net reception mechanisms of GOOSE.
Therefore, according to the current bis- net reception mechanisms of GOOSE, need to be judged for various abnormal conditions in substation.
Summary of the invention
It is an object of the invention to overcome deficiency in the prior art, provide a kind of based on the bis- net reception mechanisms of GOOSE
Abnormality judgment method, solve in substation operation, it is different if there is network storm, transmitting terminal random ordering, different source data etc.
Exception can be judged when reason condition in time, changes reception mechanism, it is accurate to handle GOOSE data.
In order to solve the above technical problems, the abnormal judgement side that the present invention provides a kind of based on the bis- net reception mechanisms of GOOSE
Method, characterized in that the following steps are included:
Step A, network storm judgement:
A1, if the message number received in per second is more than setting value, then it is assumed that there are storms for network, into next step；
A2 calculates the crc value of message data area content, by the CRC in the crc value of message data area content and crc value cache table
It compares, if less consistent, this crc value is stored in crc value cache table, otherwise abandon this message；
A3, more than the message that setting time can not receive crc value identical as in cache table, then it is new to receive to empty crc value cache table
Crc value；
Step B, exception message judgement:
B1 judges unexpected message whether is received in each network, if there is unexpected message, enters in next step；
B2 directly abandons this message, the message more new data netted using another when only single net receives unexpected message；
B3 then forces more new data when double nets receive unexpected message；
Step C, different source data judgement:
Allow to receive identical message more than heterologous frame number threshold value in the time in existence, judges on network that there are different source datas simultaneously
Alarm.
Further, in step A2, the crc value of GOOSE message data zone content is calculated using the algorithm of CRC-32.
Further, step A network storm judgement in, every 9ms at most handles 2 frame messages, be respectively 9ms head frame and with head
The inconsistent first frame of frame message crc value.
Further, in step A, the interior message number received per second is less than setting value, the then storm that exits network judgement.
Further, in step B, when subscription end initial power-on or double network chain roads are interrupted, then any one net of subscription end
Network receives after message all more new datas.
Further, in step B1, the GOOSE message number of state indexes StNum of consolidated network, same GoCB becomes smaller, or same
The GOOSE message number of state indexes StNum of one network, same GoCB is constant, and sequence serial number SqNum, which becomes smaller, thinks unexpected report
Text.
Further, in step B, in the case where double any one network interruption of net, the bis- net reception mechanisms of GOOSE are switched to
Single net reception mechanism.
Compared with prior art, the beneficial effects obtained by the present invention are as follows being: the method for the present invention have versatility, safety,
The characteristics of self-healing property, specific manifestation is as follows,
(1) versatility, although different substation Network status is different, this method is suitable for all GOOSE and receives data
Substation；
(2) safety, by being received to the GOOSE when network storm, interchanger exception, abnormal data, different source data
Judged, making protective device, behavior is safer in abnormal cases；
(3) self-healing property, after there is of short duration exception on network, protective device can be found in time, and can not participated in manually
In the case of voluntarily restore.
Detailed description of the invention
Fig. 1 is GOOSE network storm judgment mechanism；
Fig. 2 is the bis- unexpected judgment mechanisms of net of GOOSE.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.Following embodiment is only used for clearly illustrating the present invention
Technical solution, and not intended to limit the protection scope of the present invention.
The bis- net reception mechanisms of GOOSE provide only normal in two network states at present, and publishing side GOOSE message meets pre-
In the case where phase, method that how subscription end receives GOOSE data.However the Network status in real digital transformer substation is complicated
Changeable, the comprehensive practical site problems of the present invention exist respectively: storm message how is filtered in the case where single double net storms of net storm,
Obtain the GOOSE message normally sent；In publishing side message exception or after restarting in the case where important message loss, how to judge
It is unexpected that message obtain correct GOOSE message；It configures and malfunctions in engineering, when causing different source data occur in station, how in time
It notes abnormalities and notifies operation maintenance personnel；Give solution.
A kind of abnormality judgment method based on the bis- net reception mechanisms of GOOSE of the invention, the first step, to GOOSE network wind
Sudden and violent processing counts interior GOOSE frame per second, judges whether there is network storm, then passes through the method that CRC is filtered, and filters wind
Sudden and violent message guarantees the transmission of normal GOOSE frame；Second step, the processing to GOOSE exception message pass through GOOSE in each network
The abnormal judgement of the StNum and SqNum of message carry out independent statistics, to select correct GOOSE message, if two nets are different simultaneously
Often, then it is assumed that opposite side is restarted or network frame losing, receives message more new data；Third step, the processing to different source data, by right
The counting of GOOSE heartbeat message, to judge different source data caused by whether there is on the net because of configuration error.To three of the above exception
Situation carries out effective judgement identification, specifically includes following procedure:
Step A, network storm judgment mechanism, detailed process as shown in Figure 1,
A1 counts the interior message number received per second, and network is thought if being more than setting value, and there are storms, opens storm and inhibits function
Energy；
The GoCB(Goose control block on network is distinguished with GoID according to the GOOSE mark in network message, represents every group
GOOSE message).Each GoCB interior GOOSE message number received per second is calculated, if the message number received in per second is more than
(this value can be set 200 frames, be capable of handling lower than 200 frame devices, do not needed to filter, and all illustrate Network Abnormal one time 50 or more
), it is believed that it may be storm message, into storm suppression mode.
A2 calculates CRC to the data zone content of this GoCB message into after storm suppression mode, by calculated result difference
CRC be stored in crc value cache table.
Into after storm suppression mode, the CRC of GOOSE message data zone content is calculated using the algorithm of CRC-32, because
Strobe utility in storm is exactly in order to by the consistent packet loss of GOOSE message data zone content of same GoCB, so only
The value of calculation data area, quality, time.The result of calculating compares one by one with the CRC being stored in crc value cache table, such as
Fruit is less consistent to be just recorded in table, otherwise abandons this message.
A3 establishes ageing timer, more than the duplicate message that 1s can not receive crc value identical as in cache table, empties the CRC
It is worth cache table, receives the message of new crc value.
Ageing timer (aging refer to old, replacement can be abandoned) is established, timer time is set as 1s(and effectively reports
Text can be mixed in storm message, can guarantee that effective message will not be lost by the setting of 1s).More than 1s, it is slow to empty CRC
Table is deposited, the CRC for calculating GOOSE message data zone content directly inserts new CRC cache table；
A4 filters storm message into after storm suppression mode, and every 9ms at most handles 2 frame GOOSE messages.It is 9ms head respectively
Frame and the first frame inconsistent with first region frame data crc value.
Into after storm suppression mode, in order to guarantee cpu performance, CPU is not seized all by storm message, therefore every
9ms only handles 2 frame GOOSE messages, is inconsistent the in first frame message that every 9ms is received and crc value and cache table respectively
One frame message.Message more than 2 frames then abandons.
The every 9ms processing of storm message is primary, is no any pressure for corresponding CPU.If had in 9ms simultaneously correct
Message transmissions, because the CRC of CRC and storm message are inconsistent, device also can be handled correctly.It is normal under storm environment to guarantee
The processing of GOOSE message had not only been able to satisfy normal trip operation time requirement, but also storm message can be inhibited to the shadow of CPU efficiency
It rings.
Step B, exception message judgment mechanism, process are as shown in Figure 2:
When subscription end initial power-on or double network chain roads are interrupted, number of state indexes StNum and sequence serial number SqNum are defaulted as 0.This
When publishing side GOOSE message in StNum be centainly greater than default value, according to fig. 2, the unexpected counter O resets of the bis- nets of A, B connect
Receive GOOSE message, more new data.Purpose is prevented when re-powering or link down restores, because message loss leads to data
It can not update for a long time.
The GOOSE message StNum of B1, consolidated network, same GoCB become smaller or consolidated network, the GOOSE report of same GoCB
Literary StNum is constant, and SqNum, which becomes smaller, thinks unexpected message, when receiving unexpected message, according to belonging network number to non-
It is expected that packet counting adds up.
B2, when only one network receives unexpected message, at this time still using double net reception mechanisms.In any case not
It will use unexpected message more new data, and can be responded at once if another network receives correct displacement message at this time.
B3, if double nets receive unexpected message, double unexpected counters of net are judged as opposite side device weight also above two frames
It opens or caused by Network Abnormal leads to frame losing, GOOSE message abandons for a long time after occurring this situation in order to prevent, and data always can not be more
Newly, therefore unexpected counter is emptied, forced more new data (message data area content).
In the case where double any one network interruption of net, the bis- net reception mechanisms of GOOSE are switched to single net reception mechanism.
Different source data judgment mechanism: step C allows to receive the identical report of GoID in the time in the existence of GoCB setting
Text is more than heterologous frame number threshold value (3 frame), judges on network there are different source data and alerts.
The GOOSE publication of substation, the country and subscription configuration flow are to be led by engineering staff by system configuration utility at present
CCD file out, then under be attached in device.The case where being set if there is misloading under CCD file, it is possible to different source data is generated,
It is exactly to occur that multiple GoCB are identical on network, but the message that source address is different with data.If judged by source address, need
The mapping relations of maintenance device source address and GoCB need to modify mapping, are not easy to manage once changing.
The present invention recommends to allow the message number received in the time to judge by existence, the substation network of normal operation
On GOOSE message be usually to send a frame heartbeat message every T0 moment, generating allows the time to be 2 times of T0, in this time most
Receive 3 frame messages more.Illustrate that there may be different source datas on network, notify operation maintenance personnel timely by alarm signal more than 3 frames
Processing.
In conclusion the present invention is the abnormality judgment method based on the bis- net reception mechanisms of GOOSE, analyzing practical substation can
The GOOSE abnormal conditions that can occur increase network wind based on the bis- net reception mechanisms of original GOOSE under normal circumstances
Cruelly, unexpected message, the judgement of the abnormal conditions such as different source data.For digital transformer substation safe operation propose it is a kind of feasible
Method.
The method of the present invention can guarantee that the bis- nets of GOOSE receive, either network storm, unexpected message, different source data etc.
Under abnormal conditions, subscription end can note abnormalities in time, use correct GOOSE data according to its judgment mechanism.
It should be understood by those skilled in the art that, embodiments herein can provide as method, system or computer program
Product.Therefore, complete hardware embodiment, complete software embodiment or reality combining software and hardware aspects can be used in the application
Apply the form of example.Moreover, it wherein includes the computer of computer usable program code that the application, which can be used in one or more,
The computer program implemented in usable storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.) produces
The form of product.
The application is referring to method, the process of equipment (system) and computer program product according to the embodiment of the present application
Figure and/or block diagram describe.It should be understood that every one stream in flowchart and/or the block diagram can be realized by computer program instructions
The combination of process and/or box in journey and/or box and flowchart and/or the block diagram.It can provide these computer programs
Instruct the processor of general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices to produce
A raw machine, so that being generated by the instruction that computer or the processor of other programmable data processing devices execute for real
The device for the function of being specified in present one or more flows of the flowchart and/or one or more blocks of the block diagram.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvement and deformations can also be made, these improvement and deformations
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. the abnormality judgment method based on the bis- net reception mechanisms of GOOSE, characterized in that the following steps are included:
Step A, network storm judgement:
A1, if the message number received in per second is more than setting value, then it is assumed that there are storms for network, into next step；
A2 calculates the crc value of message data area content, by the CRC in the crc value of message data area content and crc value cache table
It compares, if less consistent, this crc value is stored in crc value cache table, otherwise abandon this message；
A3, more than the message that setting time can not receive crc value identical as in cache table, then it is new to receive to empty crc value cache table
Crc value；
Step B, exception message judgement:
B1 judges unexpected message whether is received in each network, if there is unexpected message, enters in next step；
B2 directly abandons this message, the message more new data netted using another when only single net receives unexpected message；
B3 then forces more new data when double nets receive unexpected message；
Step C, different source data judgement:
Allow to receive identical message more than heterologous frame number threshold value in the time in existence, judges on network that there are different source datas simultaneously
Alarm.
2. the abnormality judgment method according to claim 1 based on the bis- net reception mechanisms of GOOSE, characterized in that step A2
In, the crc value of GOOSE message data zone content is calculated using the algorithm of CRC-32.
3. the abnormality judgment method according to claim 1 based on the bis- net reception mechanisms of GOOSE, characterized in that step A net
In the judgement of network storm, every 9ms at most handles 2 frame messages, is 9ms head frame and inconsistent with first frame message crc value first respectively
Frame.
4. the abnormality judgment method according to claim 1 based on the bis- net reception mechanisms of GOOSE, characterized in that step A
In, the interior message number received per second is less than setting value, the then storm that exits network judgement.
5. the abnormality judgment method according to claim 1 based on the bis- net reception mechanisms of GOOSE, characterized in that step B
In, when subscription end initial power-on or double network chain roads are interrupted, then any one network of subscription end all updates number after receiving message
According to.
6. the abnormality judgment method according to claim 1 based on the bis- net reception mechanisms of GOOSE, characterized in that step B1
In, the GOOSE message number of state indexes StNum of consolidated network, same GoCB becomes smaller or consolidated network, the GOOSE report of same GoCB
Literary number of state indexes StNum is constant, and sequence serial number SqNum, which becomes smaller, thinks unexpected message.
7. the abnormality judgment method according to claim 1 based on the bis- net reception mechanisms of GOOSE, characterized in that step B
In, in the case where double any one network interruption of net, the bis- net reception mechanisms of GOOSE are switched to single net reception mechanism.
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| CN111447149A (en) * | 2020-06-17 | 2020-07-24 | 广东电网有限责任公司佛山供电局 | Shared storage-based GOOSE message dual-network inhibition method |
| CN113037740A (en) * | 2021-03-04 | 2021-06-25 | 南京国电南自电网自动化有限公司 | GOOSE message sender restart frame judging method |
| CN113259491A (en) * | 2021-07-01 | 2021-08-13 | 华自科技股份有限公司 | GOOSE dual-network communication data processing method and device |
| CN113691400A (en) * | 2021-08-20 | 2021-11-23 | 南方电网数字电网研究院有限公司 | GOOSE message abnormity monitoring method |
| CN114244749A (en) * | 2021-12-31 | 2022-03-25 | 国电南京自动化股份有限公司 | Dual-network GOOSE message suppression method and device |
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| CN115580557A (en) * | 2022-09-22 | 2023-01-06 | 国家电网有限公司 | GOOSE abnormal message detection method based on counting sequence analysis |
| CN117896258A (en) * | 2024-03-14 | 2024-04-16 | 南京智联达科技有限公司 | Receiving and processing method based on large-scale GOOSE message |
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