CN103281171A - Multi-clock synchronization method of distributed type sampling value network - Google Patents
Multi-clock synchronization method of distributed type sampling value network Download PDFInfo
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- CN103281171A CN103281171A CN2013101705433A CN201310170543A CN103281171A CN 103281171 A CN103281171 A CN 103281171A CN 2013101705433 A CN2013101705433 A CN 2013101705433A CN 201310170543 A CN201310170543 A CN 201310170543A CN 103281171 A CN103281171 A CN 103281171A
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Abstract
The invention relates to a multi-clock synchronization method of a distributed type sampling value network, which is applied to a protecting and measuring/controlling system comprising a sampling unit, merging units and a function unit. The method is applied to three scenes: (1) when the sampling unit, the merging units and the function unit are in connection networking and no global time injection exists, establishing time rhythm systems in the merging units, releasing time to the sampling unit and controlling the function unit; (2) when the sampling unit, the merging units and the function unit are in connection networking and global time injection exists, releasing time to the sampling unit or controlling the function unit by the merging units according to global time injection signals; and (3) when the sampling unit, the merging units and the function unit are in connection networking and the global time injection fails, generating main time by a specific merging unit and receiving signals of the main time by other merging units. According to the multi-clock synchronization method disclosed by the invention, needed time synchronization of internal data of the protecting and measuring/controlling system is realized without depending on a global time synchronization system, and the automaticity and the timeliness are high.
Description
Technical field
The present invention relates to the method for synchronous of clock for a long time that adopts in a kind of transforming plant protecting in the networking of distributed sample value and the TT﹠C system.
Background technology
Time synchronized is the basis of transforming plant protecting and TT﹠C system; though do not having adopted distributed frame even formed distributed sample value network in the synchronous system settling time; still rely on the clock synchronization system in the global set to be each self-contained unit standard time service; and the inefficacy of clock synchronization system will directly influence protection and TT﹠C system, and limit structural is succinct, advanced technology, the protection of operation maintenance distributed sample value networking easily and the application of TT﹠C system.
The method for synchronous of clock for a long time of distributed sample value networking will rely on external time to be converted into built-in many principals and subordinates clock synchronously and drive system, isolate length of a game synchronously to the direct influence of protection with TT﹠C system.
Protection mainly contains following several with the method for synchronizing time of TT﹠C system:
One, the same footwork of message data and commutator pulse
Set up a cover length of a game standardized signalling system; for each table apparatus in protection and the TT﹠C system provides a timing pulse signal and a time message interface; device is adjusted the time by message data when being subjected to; press the commutator pulse calibration, namely by the system time signal of a cover overall situation realized the time calibration of all devices synchronously.
Two, network message method for synchronizing time
In network, insert or set up a time server, with the NTP (Network Time Protocol) issuing time, device or equipment of all calibrations that take time carry out time synchronized as standard with net, this method can with NTP (Network Time Protocol) general accuracy is arranged and is applicable to the branch of the Precision Time Protocol of measurement and control system.Adopt general time during the accuracy agreement; the multiple factor affecting that timing tracking accuracy is transmitted by network message is relatively low; usually only be adapted at less conventional type monitoring system of electric substation etc. as the operation of recording time of the act, do not satisfy the protection of distributed sample and execution and the requirement of the synchronous internal time beat of TT﹠C system.And; though this method has satisfied the requirement to time synchronized and time accuracy; transforming plant protecting and the TT﹠C system that can be used for networking; but the hardware and software of equipment had all proposed higher requirement when it reached and be subjected to the network equipment, and also no standard kept the network internal clock to continue normally after master clock loses efficacy.
Summary of the invention
The purpose of this invention is to provide a kind ofly when adopting the networking of distributed sample value, do not rely on length of a game's synchro system and satisfy internal data method for synchronizing time on demand to adapt to protection and TT﹠C system functional requirement.
For achieving the above object, the technical solution used in the present invention is:
The method for synchronous of clock for a long time of a kind of distributed sample value networking, be applied to adopt in the transforming plant protecting and TT﹠C system of distributed sample value networking, described transforming plant protecting and TT﹠C system comprise follows the sampling unit that grid cyclic wave is sampled, be connected with described sample devices and transmit the merge cells of sampled data, be connected with described merge cells and receive described sampled data to realize the functional unit of corresponding function, the method for synchronous of clock for a long time of described distributed sample value networking is applied in three scenes, and three described scenes are respectively: (1) described sampling unit, described merge cells, the be connected networking and move and when not having length of a game and injecting synchronously of described functional unit; (2) be connected networking and move and when having length of a game to inject synchronously of described sampling unit, described merge cells, described functional unit; (3) described sampling unit, described merge cells, described functional unit are connected, and networking also moves and length of a game injected when losing efficacy synchronously;
When the be connected networking and move and when not having length of a game and injecting synchronously of described sampling unit, described merge cells, described functional unit, in described merge cells according to it from free settling time of beat system, by described merge cells to described sampling unit issuing time, make described sampling unit under the control of described merge cells by described time the beat system beat sample, described merge cells control described functional unit by described time the beat system beat improve the sampled data that receives;
When the be connected networking and move and when having length of a game to inject synchronously of described sampling unit, described merge cells, described functional unit, accept mechanism and detect coupled length of a game and inject signal synchronously in the built-in time synchronized of described merge cells, and inject the signal correction time synchronously according to described length of a game, again to described sampling unit issuing time or control the beat of described functional unit;
When the be connected networking and operation and length of a game of described sampling unit, described merge cells, described functional unit injected when losing efficacy synchronously, specify a certain specific merge cells that the main time of the overall situation takes place to drive, other described merge cellses receive the signal of described main time and follow its beat; If the Signal Fail of described specific merge cells main time of sending, then each described merge cells according to it from free settling time of beat system.
In the such scheme, described functional device is protection and measuring and controlling or logical block.
Because technique scheme is used; the present invention compared with prior art has following advantage: the method for synchronous of clock for a long time of distributed sample value provided by the invention networking; realize protection and TT﹠C system not to rely on length of a game's synchro system and satisfied the time synchronized of internal data needs; need not under the situation of any manual intervention; judge the current application scene; according to the scene characteristics; automatically using corresponding time synchronized scheme is that system is synchronous settling time, has automaticity, ageing higher characteristics.
Embodiment
Following embodiment is, and the present invention is further described.
Embodiment one: the method for synchronous of clock for a long time of a kind of distributed sample value networking is applied to adopt in the transforming plant protecting and TT﹠C system of distributed sample value networking.Transforming plant protecting and TT﹠C system comprise the sampling unit of following grid cyclic wave and sampling, are connected with sample devices and transmit the merge cells of sampled data, are connected with merge cells and receive sampled data to realize the functional unit of corresponding function.Wherein, sampling unit is electric mutual inductor, and functional device is protection and measuring and controlling or logical block.
The method for synchronous of clock for a long time of above-mentioned distributed sample value networking is applied in three scenes:
(1) be connected networking and move and when not having length of a game and injecting synchronously of sampling unit, merge cells, functional unit.Transforming plant protecting and the TT﹠C system of the networking of distributed sample value; with the built-in time beat of merge cells (data source device); control sampling unit (electric mutual inductor) is done the sampling of regulation beat; and transmitting data according to beat to functional unit (accepting protection and the measuring and controlling equipment of data), each functional unit is by the beat running of the merge cells (data source device) of its connection.The merge cells (data source device) that adds the sampled value network master clock of respectively doing for oneself drives sampling unit and the functional unit of its connection.
(2) be connected networking and move and when having length of a game to inject synchronously of sampling unit, merge cells, functional unit.When the transforming plant protecting of distributed sample value networking and TT﹠C system had length of a game's standard to inject at network, merge cells (data source device) was accepted time standard alignment time beat, and drives sampling unit and the functional unit of its connection by beat.
(3) sampling unit, merge cells, functional unit are connected, and networking also moves and length of a game injected when losing efficacy synchronously.Transforming plant protecting and the TT﹠C system of the networking of distributed sample value specify specific merge cells (data source device) that the main time of the overall situation takes place to drive by method, and the remainder data source apparatus is accepted its time beat and followed running.
Concrete, this for a long time the clock method for synchronous comprise the steps:
(1) when the be connected networking and move and when not having length of a game and injecting synchronously of sampling unit, merge cells, functional unit:
In each merge cells according to it from free settling time of beat system, by the sampling unit issuing time of merge cells to its connection, make sampling unit under the control of corresponding merge cells on time the beat of segmentum intercalaris shooting system sample, the functional unit that merge cells is controlled its connection beat of segmentum intercalaris shooting system on time improves the sampled data that receives.
(2) when the be connected networking and move and when having length of a game to inject synchronously of sampling unit, merge cells, functional unit:
Accept mechanism and detect coupled length of a game and inject signal synchronously in the built-in time synchronized of merge cells, merge cells injects the signal correction time synchronously according to length of a game, again to its sampling unit issuing time that connects or control functional unit beat.
(3) inject synchronously when losing efficacy when the be connected networking and operation and length of a game of sampling unit, merge cells, functional unit:
Specify a certain specific merge cells that the main time of the overall situation takes place to drive, other merge cellses receive the signal of main time and follow its beat; If the Signal Fail of the main time that specific merge cells sends, then each merge cells according to it from free settling time of beat system.
The above-mentioned method for synchronous of clock for a long time not only can provide support for transforming plant protecting and the TT﹠C system application function of distributed sample value group; can also provide time synchronized to support for the data acquisition system of other distributed networkings; realize the modularization of function, have good portability.Simultaneously, it is integrated by existing method is studied to handle, and has realized reducing time-delay, and improves time synchronized efficient.
Above-described embodiment only is explanation technical conceive of the present invention and characteristics, and its purpose is to allow the personage who is familiar with this technology can understand content of the present invention and enforcement according to this, can not limit protection scope of the present invention with this.All equivalences that spirit essence is done according to the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (2)
1. the method for synchronous of clock for a long time of distributed sample value networking, be applied to adopt in the transforming plant protecting and TT﹠C system of distributed sample value networking, described transforming plant protecting and TT﹠C system comprise follows the sampling unit that grid cyclic wave is sampled, be connected with described sample devices and transmit the merge cells of sampled data, be connected with described merge cells and receive described sampled data to realize the functional unit of corresponding function, it is characterized in that: the method for synchronous of clock for a long time of described distributed sample value networking is applied in three scenes, and three described scenes are respectively: (1) described sampling unit, described merge cells, the be connected networking and move and when not having length of a game and injecting synchronously of described functional unit; (2) be connected networking and move and when having length of a game to inject synchronously of described sampling unit, described merge cells, described functional unit; (3) described sampling unit, described merge cells, described functional unit are connected, and networking also moves and length of a game injected when losing efficacy synchronously;
When the be connected networking and move and when not having length of a game and injecting synchronously of described sampling unit, described merge cells, described functional unit, in described merge cells according to it from free settling time of beat system, by described merge cells to described sampling unit issuing time, make described sampling unit under the control of described merge cells by described time the beat system beat sample, described merge cells control described functional unit by described time the beat system beat improve the sampled data that receives;
When the be connected networking and move and when having length of a game to inject synchronously of described sampling unit, described merge cells, described functional unit, accept mechanism and detect coupled length of a game and inject signal synchronously in the built-in time synchronized of described merge cells, and inject the signal correction time synchronously according to described length of a game, again to described sampling unit issuing time or control the beat of described functional unit;
When the be connected networking and operation and length of a game of described sampling unit, described merge cells, described functional unit injected when losing efficacy synchronously, specify a certain specific merge cells that the main time of the overall situation takes place to drive, other described merge cellses receive the signal of described main time and follow its beat; If the Signal Fail of described specific merge cells main time of sending, then each described merge cells according to it from free settling time of beat system.
2. the method for synchronous of clock for a long time of distributed sample value according to claim 1 networking, it is characterized in that: described functional device is protection and measuring and controlling or logical block.
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| CN103795790A (en) * | 2014-01-23 | 2014-05-14 | 国电南瑞科技股份有限公司 | Distributed synchronous sampling and control system and method based on communication |
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Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: STATE GRID JIANGSU ELECTRIC POWER Co. Patentee after: SUZHOU POWER SUPPLY COMPANY OF STATE GRID JIANGSU ELECTRIC POWER Co. Patentee after: JIANGSU FANGTIAN POWER TECHNOLOGY Co.,Ltd. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: JIANGSU ELECTRIC POWER Co. Patentee before: STATE GRID SUZHOU POWER SUPPLY Co. Patentee before: JIANGSU FANGTIAN POWER TECHNOLOGY Co.,Ltd. |
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Address after: 215004 Suzhou labor Road, Jiangsu, No. 555 Patentee after: SUZHOU POWER SUPPLY COMPANY OF STATE GRID JIANGSU ELECTRIC POWER Co. Patentee after: JIANGSU FANGTIAN POWER TECHNOLOGY Co.,Ltd. Patentee after: STATE GRID JIANGSU ELECTRIC POWER Co. Patentee after: State Grid Corporation of China Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: STATE GRID JIANGSU ELECTRIC POWER Co. Patentee before: SUZHOU POWER SUPPLY COMPANY OF STATE GRID JIANGSU ELECTRIC POWER Co. Patentee before: JIANGSU FANGTIAN POWER TECHNOLOGY Co.,Ltd. |