CN103281171B - The multi-clock synchronization method of distributed sample value networking - Google Patents
The multi-clock synchronization method of distributed sample value networking Download PDFInfo
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- CN103281171B CN103281171B CN201310170543.3A CN201310170543A CN103281171B CN 103281171 B CN103281171 B CN 103281171B CN 201310170543 A CN201310170543 A CN 201310170543A CN 103281171 B CN103281171 B CN 103281171B
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Abstract
The present invention relates to the multi-clock synchronization method of a kind of distributed sample value networking, be applied in the protection and test system that comprises sampling unit, merge cells, functional unit, the method is applied to three scenes: when (1) sampling unit, merge cells, functional unit connect networking and inject without length of a game; In merge cells Time Created beat system, to sampling unit issuing time and control functional unit; (2) when sampling unit, merge cells, functional unit connect networking and have length of a game to inject; Merge cells according to length of a game's Injection Signal to sampling unit issuing time or control functional unit; (3) when sampling unit, merge cells, functional unit connect networking and length of a game's injection inefficacy; There is the main time in specific merge cells, other merge cellses receive the signal of main time. Method of the present invention has realized that protection and test system does not rely on length of a game's synchro system and the time synchronized that meets internal data needs, automaticity, ageing height.
Description
Technical field
The present invention relates to a kind of multi-clock synchronization method adopting in transforming plant protecting in the networking of distributed sample value and TT&C system.
Background technology
Time synchronized is the basis of transforming plant protecting and TT&C system; although not having adopted distributed frame even to form distributed sample value network in synchronous system settling time; still relying on the clock synchronization system in global set is each self-contained unit standard time service; and the inefficacy of clock synchronization system will directly affect protection and test system, limit the application of the protection and test system of simple for structure, advanced technology, operation maintenance distributed sample value networking easily.
The multi-clock synchronization method of distributed sample value networking, is synchronously converted into built-in many master-salve clocks by dependence external time and drives system, has isolated the synchronously direct impact on protection and test system of length of a game.
The method for synchronizing time of protection and test system mainly contains following several:
One, the same footwork of message data and commutator pulse
Set up a set of length of a game standardized signalling system; for each table apparatus in protection and test system provides a timing pulse signal and a time message interface; be subject to timer to adjust the time by message data; press commutator pulse calibration, by the system time signal of a set of overall situation, realized synchronously the time calibration of all devices.
Two, network message method for synchronizing time
In network, access or set up a time server, with NTP issuing time, with net all take time calibration device or equipment carry out time synchronized as standard, this method can with NTP have general accuracy and be applicable to measurement and control system Precision Time Protocol point. Adopt general time when accuracy agreement; the various factors that timing tracking accuracy is transmitted by network message is relatively low; conventionally be only suitable for being used as operation of recording time of the act at less conventional type monitoring system of electric substation etc., do not meet the requirement of the protection and test system synchronization internal time beat of distributed sample and execution. And; although the method has met the requirement to time synchronized and time accuracy; can be for the transforming plant protecting of networking and TT&C system; but its to the network equipment and and while being subject to the hardware and software of equipment higher requirement has all been proposed, after master clock lost efficacy and no standard keep network internal clock to continue normally.
Summary of the invention
The object of this invention is to provide a kind ofly in the time adopting the networking of distributed sample value, do not rely on length of a game's synchro system and meet internal data method for synchronizing time on demand to adapt to protection and test system functional requirement.
For achieving the above object, the technical solution used in the present invention is:
The multi-clock synchronization method of a kind of distributed sample value networking, be applied in the transforming plant protecting and TT&C system that adopts the networking of distributed sample value, 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 multi-clock synchronization method of described distributed sample value networking is applied in three scenes, scene described in three is respectively: the sampling unit that (1) is described, described merge cells, described functional unit be connected networking operation and during without length of a game's simultaneous implantation, (2) be connected networking when moving and having length of a game's simultaneous implantation of described sampling unit, described merge cells, described functional unit, (3) when described sampling unit, described merge cells, described functional unit are connected networking operation and length of a game's simultaneous implantation inefficacy,
When described sampling unit, described merge cells, described functional unit be connected networking operation and during without length of a game's simultaneous implantation, in described merge cells according to it from free Time Created of beat system, by described merge cells to described sampling unit issuing time, described sampling unit is sampled by the beat of described time beat system under the control of described merge cells, and the functional unit described in described merge cells control improves by the beat of described time beat system the sampled data receiving;
When the be connected networking when moving and having length of a game's simultaneous implantation of described sampling unit, described merge cells, described functional unit, at the built-in time synchronized acceptance mechanism of described merge cells and detect coupled length of a game's simultaneous implantation signal, and according to described length of a game's simultaneous implantation signal correction time, then to described sampling unit issuing time or control the beat of described functional unit;
In the time that described sampling unit, described merge cells, described functional unit are connected networking operation and length of a game's simultaneous implantation inefficacy, specify a certain specific merge cells that the main time of the overall situation occurs to drive, the merge cells described in other receives the signal of described main time and follows its beat; If the Signal Fail of the main time that described specific merge cells sends, the merge cells described in each according to it from free Time Created of beat system.
In 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 advantages: the multi-clock synchronization method of distributed sample value provided by the invention networking; realize that protection and test system does not rely on length of a game's synchro system and the time synchronized that meets internal data needs; without any manual intervention in the situation that; judge current application scene; according to scene feature; automatically the corresponding Time Synchronizing of application is system made time synchronized, has automaticity, ageing higher feature.
Detailed description of the invention
The invention will be further described for embodiment below.
Embodiment mono-: the multi-clock synchronization method of a kind of distributed sample value networking, is applied in the transforming plant protecting and TT&C system that adopts the networking of distributed sample value. Transforming plant protecting and TT&C system comprise the sampling unit of following grid cyclic wave and sampling, are connected and transmit the merge cells of sampled data, be connected with merge cells and receive sampled data to realize the functional unit of corresponding function with sample devices. Wherein, sampling unit is electric mutual inductor, and functional device is protection and measuring and controlling or logical block.
The multi-clock synchronization method of above-mentioned distributed sample value networking is applied in three scenes:
(1) be connected networking operation and during without length of a game's simultaneous implantation 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) and do the sampling of regulation beat; and transmitting data according to beat to functional unit (accepting the protection and test equipment of data), each functional unit is by the beat running of the merge cells (data source device) of its connection. Add the merge cells (data source device) of the sampled value network master clock of respectively doing for oneself to drive sampling unit and the functional unit of its connection.
(2) be connected networking when moving and having length of a game's simultaneous implantation of sampling unit, merge cells, functional unit. When the transforming plant protecting of distributed sample value networking and TT&C system inject in network Shang You length of a game standard, merge cells (data source device) is accepted time standard alignment time beat, and drives sampling unit and the functional unit of its connection by beat.
(3) when sampling unit, merge cells, functional unit are connected networking operation and length of a game's simultaneous implantation inefficacy. 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 occurs to drive by method, and remainder data source apparatus is accepted its time beat and followed running.
Concrete, this multi-clock synchronization method comprises the steps:
(1) when sampling unit, merge cells, functional unit be connected networking operation and during without length of a game's simultaneous implantation:
In each merge cells according to it from free Time Created of beat system, sampling unit issuing time by from 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 of its connection of the merge cells control on time beat of segmentum intercalaris shooting system improves the sampled data receiving.
(2) when the be connected networking when moving and having length of a game's simultaneous implantation of sampling unit, merge cells, functional unit:
At the built-in time synchronized acceptance mechanism of merge cells and detect coupled length of a game's simultaneous implantation signal, merge cells is according to length of a game's simultaneous implantation signal correction time, then the beat of the sampling unit issuing time connecting to it or control functional unit.
(3) in the time that sampling unit, merge cells, functional unit are connected networking operation and length of a game's simultaneous implantation inefficacy:
Specify a certain specific merge cells that the main time of the overall situation occurs 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, each merge cells according to it from free Time Created of beat system.
Above-mentioned multi-clock synchronization method not only can provide support for transforming plant protecting and the TT&C system application function of distributed sample value group; can also support for the data collecting system of other distributed networkings provides time synchronized; the modularization of practical function, has good portability. Meanwhile, it is integrated by existing method is studied to process, and has realized reduction time delay, and has improved time synchronized efficiency.
Above-described embodiment is only explanation technical conceive of the present invention and feature, and its object is to allow person skilled in the art can understand content of the present invention and implement according to this, can not limit the scope of the invention with this. All equivalences that Spirit Essence is done according to the present invention change or modify, within all should being encompassed in protection scope of the present invention.
Claims (2)
1. the multi-clock synchronization method of distributed sample value networking, be applied in the transforming plant protecting and TT&C system that adopts the networking of distributed sample value, described transforming plant protecting and TT&C system comprise follows the sampling unit that grid cyclic wave is sampled, be connected with described sampling unit 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 multi-clock synchronization method of described distributed sample value networking is applied in three scenes, scene described in three is respectively: the sampling unit that (1) is described, described merge cells, described functional unit be connected networking operation and during without length of a game's simultaneous implantation, (2) be connected networking when moving and having length of a game's simultaneous implantation of described sampling unit, described merge cells, described functional unit, (3) when described sampling unit, described merge cells, described functional unit are connected networking operation and length of a game's simultaneous implantation inefficacy,
When described sampling unit, described merge cells, described functional unit be connected networking operation and during without length of a game's simultaneous implantation, in described merge cells according to it from free Time Created of beat system, by described merge cells to described sampling unit issuing time, described sampling unit is sampled by the beat of described time beat system under the control of described merge cells, and the functional unit described in described merge cells control improves by the beat of described time beat system the sampled data receiving;
When the be connected networking when moving and having length of a game's simultaneous implantation of described sampling unit, described merge cells, described functional unit, at the built-in time synchronized acceptance mechanism of described merge cells and detect coupled length of a game's simultaneous implantation signal, and according to described length of a game's simultaneous implantation signal correction time, then to described sampling unit issuing time or control the beat of described functional unit;
In the time that described sampling unit, described merge cells, described functional unit are connected networking operation and length of a game's simultaneous implantation inefficacy, specify a certain specific merge cells that the main time of the overall situation occurs to drive, the merge cells described in other receives the signal of described main time and follows its beat; If the Signal Fail of the main time that described specific merge cells sends, the merge cells described in each according to it from free Time Created of beat system.
2. the multi-clock synchronization method of distributed sample value according to claim 1 networking, is characterized in that: described functional unit is protection and measuring and controlling or logical block.
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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. |