CN101521406B - GOOSE dual-net redundant communication signal transmission method - Google Patents
GOOSE dual-net redundant communication signal transmission method Download PDFInfo
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- CN101521406B CN101521406B CN2008100598734A CN200810059873A CN101521406B CN 101521406 B CN101521406 B CN 101521406B CN 2008100598734 A CN2008100598734 A CN 2008100598734A CN 200810059873 A CN200810059873 A CN 200810059873A CN 101521406 B CN101521406 B CN 101521406B
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Abstract
A GOOSE dual-net redundant communication signal transmission method relates to the application field of 'Substation Communication Network and System' standard (IEC61850) facing the relay protection ofa substation event (GOOSE) of a general object in the substation. The prior art has the defect of low reliability, and the method comprises the steps of StNum comparison and SqNum comparison of a rec eiving party, restart judgment of a sending party, and the like, avoids the loss of relay protection function caused by single network system fault or breakdown by adopting a dual-net redundant mechanism for automatically judging whether the information is correct, and improves the reliability of the system.
Description
[technical field]
The present invention relates to the application of the transformer substation case towards general object (GOOSE) of " substation communication network and system " standard (IEC61850) at substation relay protection, specifically is a kind of GOOSE dual-net redundant communication signal transmission method.
[background technology]
The IEC61850 standard is a TC57 working group of International Electrotechnical Commission at " substation communication network and the system " series standard that solves the up-to-date formulation of interoperability issue that electric substation automation system faces, this standard obtains the support of domestic and international most of main flow producer, becomes the unified standard of the whole world in automation of transformation substations field.Transformer substation case GOOSE towards general object is that IEC61850 is solution transformer station high-speed traffic demand, especially relaying protection tripping operation message transmission, and a kind of rapid message mechanism that proposes.The GOOSE message maps directly to link layer and physical layer behind presentation layer, and adopts and to have the switching Ethernet technology of priority and virtual LAN VLAN sign (IEEE 802.1Q), has guaranteed the real-time of message transmissions.
But the IEC61850 standard is not considered network redundancy mechanism, adopts single Netcom news, in case communication network breaks down or paralyses, relaying protection system will lose defencive function, and this can have serious consequences to the safe and stable operation of electric power system, and reliability is lower.
[summary of the invention]
In order to overcome the above-mentioned defective that exists in the prior art; the invention provides a kind of GOOSE dual-net redundant communication signal transmission method; under the prerequisite of guaranteeing GOOSE message rapidity; the network redundancy function is provided; to avoid causing the relaying protection afunction, improve system reliability because of single network system failures or paralysis.
For this reason, the present invention by the following technical solutions: the GOOSE dual-net redundant communication signal transmission method is characterized in that it comprises the steps:
1) transmit leg links to each other by two nets with reciever, and a network is used for transmission signals, and another network then is in stand-by state;
2) in the GOOSE message, the increase of StNum sequence number represents to transmit the renewal of data, and the increase of SqNum sequence number represents to retransmit increasing progressively of message, and message StNum and previous frame that reciever will newly receive compare;
3) if StNum greater than the previous frame message, then is judged as new data, more the old and new's data;
4), be re-transmission message and abandoning if SqNum more than or equal to previous frame, then judges if StNum equals the previous frame message and SqNum and previous frame compared again; If SqNum, then judges whether rebooting device of transmit leg less than previous frame, be new data more then, otherwise dropping packets;
5) if StNum, then judges whether rebooting device of transmit leg less than the previous frame message, be new data more then, otherwise dropping packets;
6) under the situation of dropping packets, judge this network failure, switch to backup network by the network switching device shifter and transmit.
The pattern that the present invention has adopted two nets to work simultaneously, guaranteed the rapidity of transmission, whether differentiate whether more new data of communication disruption and decision by the recipient, when receiving the error message that retransmits or transmit because of a certain network failure, new data more, thus the reliability of data guaranteed.Transmit leg of the present invention, reciever all can adopt information processor process information automatically.
Of the present invention pair of net can adopt the separate double net, and the message SqNum that receives as individual network recipient is during less than the previous frame message, judges that then dispensing device restarts, and judges fast reliable.
Beneficial effect: the present invention is by adopting the double-network redundant mechanism of automatic identification information correctness, avoided causing the relaying protection afunction because of single network system failures or paralysis, improved the reliability of system.
[description of drawings]
Fig. 1 is a principle process schematic diagram of the present invention.
[embodiment]
GOOSE dual-net redundant communication signal transmission method as shown in Figure 1, the recipient adopts the automatic information processing device with transmit leg and links to each other by two nets, receiving system carries out initialization earlier, and making the StNum of previous frame and SqNum all is zero, and two then net beginnings are transmission signals simultaneously.
After receiving system is received the GOOSE message, with StNum and previous frame relatively, if StNum is greater than previous frame, direct new data more then; If StNum is less than previous frame, judge then whether dispensing device restarts, restarting under the situation more new data, do not restarting dropping packets under the situation; If StNum equals previous frame, the size of SqNum and previous frame relatively then is when SqNum then direct dropping packets during more than or equal to previous frame, when SqNum need judge also whether dispensing device restarts during less than previous frame, restarting under the situation more new data, do not restarting dropping packets under the situation.
Wherein, under the situation of separate double net, the message SqNum that receives as individual network recipient is during less than the previous frame message, judges that then dispensing device restarts.
Claims (2)
1.GOOSE dual-net redundant communication signal transmission method is characterized in that it comprises the steps:
1) transmit leg links to each other by two nets with reciever, and a network is used for transmission signals, and another network then is in stand-by state;
2) in the GOOSE message, the increase of StNum sequence number represents to transmit the renewal of data, and the increase of SqNum sequence number represents to retransmit increasing progressively of message, and message StNum and previous frame that reciever will newly receive compare;
3) if StNum greater than the previous frame message, then is judged as new data, more the old and new's data;
4), be re-transmission message and abandoning if SqNum more than or equal to previous frame, then judges if StNum equals the previous frame message and SqNum and previous frame compared again; If SqNum, then judges whether rebooting device of transmit leg less than previous frame, be new data more then, otherwise dropping packets;
5) if StNum, then judges whether rebooting device of transmit leg less than the previous frame message, be new data more then, otherwise dropping packets;
6) under the situation of dropping packets, judge this network failure, switch to backup network by the network switching device shifter and transmit.
2. GOOSE dual-net redundant communication signal transmission method according to claim 1 is characterized in that described pair of net is the separate double net, and the message SqNum that receives as the single network recipient is during less than the previous frame message, judges that then dispensing device restarts.
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| CN2008100598734A CN101521406B (en) | 2008-02-26 | 2008-02-26 | GOOSE dual-net redundant communication signal transmission method |
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| CN2008100598734A CN101521406B (en) | 2008-02-26 | 2008-02-26 | GOOSE dual-net redundant communication signal transmission method |
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| CN101521406B true CN101521406B (en) | 2011-05-04 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101753584B (en) * | 2010-01-09 | 2012-05-23 | 东方电子股份有限公司 | Method for improving rapid message processing speed of intelligent transformer substation under VxWorks system |
| CN104301166A (en) * | 2013-07-18 | 2015-01-21 | 国家电网公司 | Intelligent terminal GOOSE dual-network mechanism detection method |
| CN105610246B (en) * | 2015-05-12 | 2019-02-12 | 广东电网有限责任公司电力调度控制中心 | Substation information based on information redundancy verifies error correction method |
| CN109725565A (en) * | 2018-12-07 | 2019-05-07 | 深圳供电局有限公司 | A kind of master is with collaboration real-time control exchange method |
| CN113037740B (en) * | 2021-03-04 | 2023-08-18 | 南京国电南自电网自动化有限公司 | GOOSE message sending Fang Chongqi frame discrimination method |
| CN113259491B (en) * | 2021-07-01 | 2021-11-02 | 华自科技股份有限公司 | GOOSE dual-network communication data processing method and device |
| CN113691400B (en) * | 2021-08-20 | 2022-05-06 | 南方电网数字电网研究院有限公司 | GOOSE message abnormity monitoring method |
| CN113572266B (en) * | 2021-09-26 | 2022-01-25 | 广东电网有限责任公司中山供电局 | Mother-to-difference position indicating device and mother-to-difference position indicating system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687930A (en) * | 2005-05-25 | 2005-10-26 | 北京四方继保自动化股份有限公司 | Method of implementing IEC 61850 information indirect access real-time database |
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- 2008-02-26 CN CN2008100598734A patent/CN101521406B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1687930A (en) * | 2005-05-25 | 2005-10-26 | 北京四方继保自动化股份有限公司 | Method of implementing IEC 61850 information indirect access real-time database |
Non-Patent Citations (3)
| Title |
|---|
| 操丰梅等.基于数字化变电站过程层的分布式母线保护的研制.《电力系统自动化》.2008,第32卷(第4期),69-72. * |
| 沈健等.IEC61850GOOSE在变电站综合自动化系统中的应用.《电网技术》.2006,第30卷433-436. * |
| 贺振华等.IEC61850标准下通用变电站事件模型与采样值传输模型的比较.《继电器》.2008,第36卷(第1期),80-83. * |
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