CN101881939A - Time synchronization device for electrical power system - Google Patents
Time synchronization device for electrical power system Download PDFInfo
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- CN101881939A CN101881939A CN2009100508412A CN200910050841A CN101881939A CN 101881939 A CN101881939 A CN 101881939A CN 2009100508412 A CN2009100508412 A CN 2009100508412A CN 200910050841 A CN200910050841 A CN 200910050841A CN 101881939 A CN101881939 A CN 101881939A
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- synchronization device
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- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims abstract description 27
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- 238000001514 detection method Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000001360 synchronised effect Effects 0.000 description 4
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- 230000007175 bidirectional communication Effects 0.000 description 2
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- 229910052701 rubidium Inorganic materials 0.000 description 2
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
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- 239000013078 crystal Substances 0.000 description 1
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- 230000004048 modification Effects 0.000 description 1
- 230000005622 photoelectricity Effects 0.000 description 1
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/126—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wireless data transmission
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- Electric Clocks (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
The invention discloses a time synchronization device for an electrical power system, which comprises a centre station system, a master clock, a follow clock and a monitoring system, wherein the centre station system and the master clock are wirelessly connected through a Big Dipper satellite, the master clock is connected with the follow clock, and the follow clock is in serial connection with the monitoring system. The invention obtains a satellite standard time signal, and then adjusts a local clock to ensure that the time difference is controlled to be within a definite accuracy range for providing a standard time source for peripheral devices.
Description
Technical field
The present invention relates to a kind of Time synchronization technique, particularly relate to a kind of time synchronization device for electrical power system.
Background technology
Inner each delivery end of electric system at present, receiving end widely distributed and disperseing, automation equipment inside all has real-time clock, time service device based on GPS (global location navigational system) is perhaps arranged in the station, its inherent error is difficult to avoid, increase along with working time, accumulated error can be increasing, can lose correct time measurement effect.
Along with the raising of operation of power networks technical merit, most of transformer station adopts the comprehensive automation scheme, and distant place centralized control and operation had both improved labour productivity, has reduced again to think the possibility of maloperation.Therefore, to require be the basic demand of electric substation automation system to the time synchronized of automated system real-time clock.In order to guarantee power grid security and economical operation, various automation equipment widespread uses, the operate as normal of these devices and the performance of effect, too busy to get away equally unified the whole network time reference based on the computer technology and the communication technology.Some basic operation system times are inconsistent if inconsistent meeting of time directly causes electric power, cause data statistics error to occur, and analysis result is nonsensical, and fault analysis device can't be located, and even more seriously must bring some security incidents to electric power.
The electrical network of electric power more than 90% all is to adopt the gps system time service at present, and a spot of GPS and the passive time service of the Big Dipper are also arranged simultaneously.At present time service equipment can't be known and As time goes on obtains the running status of self and the precision of time service, and in a single day clock is made mistakes and can be brought great potential safety hazard.
Summary of the invention
The technical problem to be solved in the present invention is in order to overcome the defective of prior art, a kind of time synchronization device for electrical power system is provided, it is to be that bimodulus design is carried out on the basis with satellite system of the Big Dipper and global location navigational system (GPS), obtain the satellite time reference signal, adjust local clock then the time difference is controlled in the definite accuracy (nanosecond), the clock apparatus in standard time source is provided to peripheral hardware.
The present invention solves above-mentioned technical matters by following technical proposals: a kind of time synchronization device for electrical power system, it is characterized in that, it comprises central station system, major clock, from clock and supervisory system, central station system and major clock carry out wireless connections by a big-dipper satellite, major clock with link to each other from clock, carry out serial ports from clock and supervisory system and be connected.
Preferably, described major clock with link to each other by optical fiber cable from clock.
Preferably, described major clock with link to each other by signal cable from clock.
Preferably, described central station system is connected with big-dipper satellite.
Positive progressive effect of the present invention is: the present invention adopts the advantage of Big Dipper bi-directional communication function, the status information of equipment time service precision error amount, each module of device interior and the warning information of equipment are reported central station in real time by big-dipper satellite, central station can be compared according to the situation of central atom clock or rubidium clock simultaneously, send warning information, automatic/hand carries out the time source control of equipment, the drift compensation of time precision, the operations such as collection of module status information reach synchronous fully, running status real-time monitoring of whole network equipment time.The present invention simultaneously makes each time source can reach good synchronization for various time source load modules provide the compensation of delay function.
Description of drawings
Fig. 1 is the module frame chart of time synchronization device for electrical power system of the present invention.
Fig. 2 is the major clock theory diagram (Big Dipper list/two-way time service and GPS time service) among the present invention.
Embodiment
Provide preferred embodiment of the present invention below in conjunction with accompanying drawing, to describe technical scheme of the present invention in detail.
As shown in Figure 1, time synchronization device for electrical power system of the present invention comprises central station system, major clock, from clock and supervisory system, central station system comprises center applications system and center receiving system, central station system and major clock carry out communication by a big-dipper satellite, be that central station system and major clock carry out wireless connections by a big-dipper satellite, major clock with link to each other with IRIG-B sign indicating number (a kind of timing code) by optical fiber cable or signal cable (such as 422/485 model) from clock, from clock is to carry out serial ports with supervisory system to be connected, central station system also is connected with big-dipper satellite, deposit database in after the status information of coming receiver terminal device to send by gps satellite or the big system of big-dipper satellite is also analyzed, transmit the instruction of each end device of control simultaneously; Major clock is to receive the satellite time signal, through resolving, keep and the outputting standard temporal information, provides the comparison function, and the various states with clock apparatus send to central station by big-dipper satellite simultaneously; The ability that has expansion major clock output various interface from clock; Supervisory system is carried out the control function of unit state Data Detection and device instruction, supervisory system receives corresponding status data by serial ports and analyzes and deposit in database, if unit state is non-compliant then to be alarmed, carry out local statistical study simultaneously.
As shown in Figure 2, the principle of work of major clock of the present invention (Big Dipper list/two-way time service and GPS time service) is: time service is the time source module via satellite, the centre management control module, the time source detection module, time source control module and IRIG-B sign indicating number time message generative circuit etc. are finished, satellite time source module and Big Dipper antenna, the gps antenna connection also receives wired benchmark, and two-way time service application of timed sending and time source contrast, mutual send state information between satellite time source module and the centre management control module, the time source detection module sends detection information to the centre management control module, mutual send state information between centre management control module and the time source control module, IRIG-B sign indicating number time message generative circuit is isolated to sent information such as B sign indicating number and time message by time service device by photoelectricity.
Wherein the satellite time source module comprises GPS receiving unit, Big Dipper receiving unit, this three parts function of wired B sign indicating number time source importation.The GPS receiving unit receives the gps satellite broadcast singal, calculates the output of correct time information according to satellite information.Big Dipper receiving unit receives the big-dipper satellite broadcast singal, calculates the output of correct time information according to satellite information.Wired time B coded signal is inserted in wired B sign indicating number time source importation, offers the time source control module and selects output.
Time synchronization device for electrical power system of the present invention has following function:
A. the whole network remote monitoring and administration function
The present invention adopts the advantage of Big Dipper bi-directional communication function, the status information of equipment time service precision error amount, each module of device interior and the warning information of equipment are reported central station in real time by big-dipper satellite, central station can be compared according to the situation of central atom clock or rubidium clock simultaneously, send warning information, automatic/hand carries out the time source control of equipment, the drift compensation of time precision, the operations such as collection of module status information.Reach synchronous fully, running status real-time monitoring of whole network equipment time.
B. the two-way time service function of the Big Dipper
Send two-way time service application regularly for the big system of the Big Dipper, the big system of the Big Dipper is calculated local clock compensation of delay value, thereby revises local time precision, improves clock absolutely accurate precision.
C. time source calculates the comparison function
Punctual circuit provides an internal oscillator for system, and this can measure equipment simultaneously to the precision of time source.Satellite-signal and crystal inside mutually combine and complement one another, but the shake of elimination satellite-signal, the output that assurance equipment is stable.A second phenomenon can not appear interrupting and lacking in the transmission that guarantees temporal information simultaneously.Compare according to all time source signals of device simultaneously, give corresponding difference in real time, report to centring system.
D. control and management function
The control and management function mainly contains the function of two aspects: the state real-time report of each module is given the control and management module on the one hand, reports to center monitoring management platform or monitoring of tools management system according to the frequency of setting simultaneously; Finish Distribution Center's monitoring management platform or the directly instruction assigned of the monitoring management system of connection device on the other hand.
E. time source measuring ability
Time source detects and mainly to be divided into two aspects: the one, the degree of convergence of pulse per second (PPS) is detected, and promptly test the shake of 1PPS (pps pulse per second signal), this can reflect the quality of a satellite clock.Be the test of absolute error on the other hand, promptly use this device to compare, mainly detect the precision and the fault of clock as standard time source and tested time source.
F. time source control function
Judge and selection output time signal according to set time source priority orders of time.
G. high precision time service, punctual function
Synchronous master clock of the present invention adopts advanced technology algorithm, cooperates the mode of thinking of innovation, makes the precision of its time service higher, and the GPS time service precision is better than 100ns, and the two-way time service precision of the Big Dipper is better than 100ns, and the unidirectional time service precision of the Big Dipper is better than 200ns.
Though more than described the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, under the prerequisite that does not deviate from principle of the present invention and essence, can make numerous variations or modification to these embodiments.Therefore, protection scope of the present invention is limited by appended claims.
Claims (4)
1. time synchronization device for electrical power system, it is characterized in that it comprises central station system, major clock, from clock and supervisory system, central station system and major clock carry out wireless connections by a big-dipper satellite, major clock with link to each other from clock, carry out serial ports from clock and supervisory system and be connected.
2. time synchronization device for electrical power system as claimed in claim 1 is characterized in that, described major clock with link to each other by optical fiber cable from clock.
3. time synchronization device for electrical power system as claimed in claim 1 is characterized in that, described major clock with link to each other by signal cable from clock.
4. time synchronization device for electrical power system as claimed in claim 1 is characterized in that described central station system is connected with big-dipper satellite.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100508412A CN101881939A (en) | 2009-05-08 | 2009-05-08 | Time synchronization device for electrical power system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100508412A CN101881939A (en) | 2009-05-08 | 2009-05-08 | Time synchronization device for electrical power system |
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| CN101881939A true CN101881939A (en) | 2010-11-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2009100508412A Pending CN101881939A (en) | 2009-05-08 | 2009-05-08 | Time synchronization device for electrical power system |
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| CN (1) | CN101881939A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520609A (en) * | 2011-12-16 | 2012-06-27 | 四川省电力公司通信自动化中心 | Multifunctional electric power system time synchronization calibration instrument |
| CN102621954A (en) * | 2012-03-22 | 2012-08-01 | 上海许继电气有限公司 | Self-adaptive multi-signal-source time synchronization card device for smart grid and message analysis system |
| CN103513569A (en) * | 2013-09-17 | 2014-01-15 | 国家电网公司 | Method for synchronizing redundant time of intelligent substation |
| CN104460314A (en) * | 2014-11-26 | 2015-03-25 | 江汉大学 | Time correcting method and system |
-
2009
- 2009-05-08 CN CN2009100508412A patent/CN101881939A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102520609A (en) * | 2011-12-16 | 2012-06-27 | 四川省电力公司通信自动化中心 | Multifunctional electric power system time synchronization calibration instrument |
| CN102621954A (en) * | 2012-03-22 | 2012-08-01 | 上海许继电气有限公司 | Self-adaptive multi-signal-source time synchronization card device for smart grid and message analysis system |
| CN103513569A (en) * | 2013-09-17 | 2014-01-15 | 国家电网公司 | Method for synchronizing redundant time of intelligent substation |
| CN104460314A (en) * | 2014-11-26 | 2015-03-25 | 江汉大学 | Time correcting method and system |
| CN104460314B (en) * | 2014-11-26 | 2017-04-05 | 江汉大学 | A kind of method and system of proof time |
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Application publication date: 20101110 |