CN204389910U - A kind of calibration system of power information acquisition system master clock - Google Patents
A kind of calibration system of power information acquisition system master clock Download PDFInfo
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- CN204389910U CN204389910U CN201420805203.3U CN201420805203U CN204389910U CN 204389910 U CN204389910 U CN 204389910U CN 201420805203 U CN201420805203 U CN 201420805203U CN 204389910 U CN204389910 U CN 204389910U
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Abstract
The calibration system of a kind of power information acquisition system master clock that the utility model proposes, described system comprises satellite receiver, atomic clock, micro-meter, precision counter and data processor of jumping; Described precision counter respectively with satellite receiver, micro-jump meter be connected with data processor; Described satellite receiver, atomic clock, micro-meter that jumps, precision counter are connected successively with data processor.The utility model utilizes the mode of satellite common vision to measure electric system each province power information acquisition system clock synchronization system master clock, achieve the remote calibration to time/frequency metering system, utilize the utility model can complete tracing to the source and transmission of quantity value of this time/frequency metering system time/frequency value, calibration value can be traceable to national time/frequency benchmark.The utility model can carry out remote calibration to the tested time synchronism equipment of network system, solves the variety of problems that long distance is carried and wire transmission brings, realizes the accurate unification of power information acquisition system temporal frequency value.
Description
Technical field
The utility model relates to a kind of calibration system, specifically relates to a kind of calibration system of power information acquisition system master clock.
Background technology
Along with the fast development that China's intelligent grid is built, the characteristic feature such as safety, self-healing, high-quality, interaction of intelligent grid embodies more and more outstanding.The self-healing of intelligent grid shows carries out the online self-assessment of continuous print to the running status of electrical network, and takes preventative control device, Timeliness coverage quick diagnosis and elimination potential faults.Interconnective complex electric network means, any yardman cannot solve single-handedly or isolate power transmission failure together, real-time management modern power network, need to use more automated monitor, yardman, computer system, between communication network and data sampling sensor cooperatively interact also must be more tacit, the basis that above-mentioned functions and management expectancy realize is electric system Time Synchronization Network.
Acquisition terminal and intelligent electric meter operational reliability directly affect the interests of Electricity customers, in senior electricity consumption system, intelligent electric meter trade settlement etc. are to time quantum primary system one be proposed very high requirement accurately and reliably, each province's power information acquisition system master clock as the source of unified local time-frequency value, its accuracy, degree of stability and and other province power information acquisition system master clock between consistance decisive role is played to the overall power information acquisition system fault diagnosis of company and decision-making.
At present, the above-mentioned constitution system of intelligent grid adopts respective method establishment time standard respectively, there are differences to a certain extent between these time standards, unified markers cannot be established, simultaneously, can not magnitude tracing being made to be subject to traditional carrying formula mode limit, bring inconvenience to the operation of electrical network by discontinuity charging operation of time.Wired transfer mode of value is subject to circuit distance limit, and loss of accuracy is larger.
Utility model content
For the deficiencies in the prior art, the utility model proposes a kind of calibration system of power information acquisition system master clock, provide a kind of new alignment time frequency measurement equipment as synchronized clock system, i.e. a kind of remote Time transfer receiver based on satellite common vision technology and transmission calibration system.Take satellite time signals as medium, measure the clock correction of two places clock relatively far apart, obtain good technical indicator.Utilize method of looking altogether to take satellite time signals as medium, eliminate the impact of the effects such as travel path, Doppler shift, troposphere, measure the clock correction of two places clock relatively far apart, find that receiver is abnormal, obtain good technical indicator.What is called is looked altogether, namely power information acquisition system in two places observes same satellite (satellite such as GPS, Galileo, Big Dipper) at one time, its implication is in the visual angle of a satellite, and on the earth, the clock in any two places can utilize the time signal of same the satellite be simultaneously subject to carry out Time transfer receiver with synchronous.The utility model can calibrate the time and frequency system be made up of atomic clock (or crystal clock), satellite receiver, computing machine etc., and calibration uncertainty can reach 5 × 10
?14, calibration result can be traceable to national Time and frequency standard.
The object of the invention is to adopt following technical proposals to realize:
A calibration system for power information acquisition system master clock, its improvements are, described system comprises satellite receiver, atomic clock, micro-meter, precision counter and data processor of jumping;
Described precision counter respectively with satellite receiver, micro-jump meter be connected with data processor;
Described satellite receiver, atomic clock, micro-meter that jumps, precision counter are connected successively with data processor.
Preferably, described system comprises first ground satellite receiver, first ground standard cesium-beam atomic clock, the micro-meter that jumps in first ground, first ground precision counter, first ground data processor, the satellite receiver of second ground master clock, the atomic clock of second ground master clock, micro-meter that jumps of second ground master clock, the second ground precision counter of master clock and the second ground data processor of master clock;
Described first ground standard cesium-beam atomic clock and first ground is micro-to jump to count and is connected; Described first ground precision counter respectively micro-with first ground jump count, first ground satellite receiver, first data processor be connected;
Micro-score that jumps of described second ground master clock is not connected with the data processor of second ground master clock with the atomic clock of second ground master clock; The precision counter of described second ground master clock jump with second ground master clock micro-respectively count, the satellite receiver of second ground master clock, second the data processor of master clock be connected.
Preferably, described first ground data processor is connected with the data processor of second ground master clock.
Preferably, micro-meter that jumps of described second ground master clock is connected with the data processor of second ground master clock.
Preferably, the satellite receiver of described first ground satellite receiver and second ground master clock respectively has 16 passages, observes the continuous free of discontinuities comparison of multi-satellite simultaneously.
Preferably, described first ground satellite receiver, the micro-score that jumps in first ground are not connected with first ground precision counter; The satellite receiver of described second ground master clock, the micro-of second ground master clock jump to score and are not connected with second ground precision counter.
Compared with the prior art, the beneficial effects of the utility model are:
The utility model utilizes the mode of satellite common vision to measure electric system each province power information acquisition system clock synchronization system master clock, achieve the remote calibration to time/frequency metering system, utilize the utility model can complete tracing to the source and transmission of quantity value of this time/frequency metering system time/frequency value, calibration value can be traceable to national time/frequency benchmark.
The utility model can carry out remote calibration to the tested time synchronism equipment of network system, solves the variety of problems that long distance is carried and wire transmission brings, realizes the accurate unification of power information acquisition system temporal frequency value.
Laboratory, the utility model first, second two places is receiving satellite signal simultaneously, and measurement data can carry out later stage exchange process, and not by satellite clock error effect, time uncertainty is better than 10ns.
The utility model eliminates the impact that signal propagation path is brought, and has very high uncertainty, and frequency uncertainty is better than 5 × 10
-14.
The utility model satellite receiver has 16 passages, and first, second two places can observe multi-satellite realize continuous free of discontinuities comparison simultaneously, have high reliability.
The utility model can keep high-precision time/frequency, utilizes method of looking altogether to eliminate the impacts such as satellite motion, travel path, satellite clock correction, Doppler shift simultaneously, finds the error that receiver may exist to complete the time/frequency comparison of pin-point accuracy.Native system to the clock synchronization system master clock time service of electric system each province, can realize the remote calibration to time/frequency metering system, also can utilize satellite common vision law and state time service center comparison, realize tracing to the source to time/frequency value.Native system is the critical system improving electric system time/frequency transmission of quantity value chain; the accurate, unified of electric system time measurement can be ensured; for electric energy acquisition, calculating fee of electric energy, safeguard protection, fault analysis provide reliable basis, there is important actual value.
Accompanying drawing explanation
The calibration system structural drawing of a kind of power information acquisition system master clock that Fig. 1 provides for the utility model.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model is described in further detail.
For solve power information acquisition system Time Synchronization Network pair time and magnitude tracing and problem of transmission, the utility model provides a kind of calibration system of power information acquisition system master clock, system is made up of cesium-beam atomic clock, satellite receiver, precision counter, micro-meter that jumps, computing machine and supporting calibration procedure thereof, when can carry out remote calibration pair to strange land clock, calibration result can be traceable to national Time and frequency standard simultaneously.
The calibration system of a kind of power information acquisition system of the utility model master clock comprises first ground satellite receiver 1, first ground cesium-beam atomic clock 2, the micro-meter 3 that jumps in first ground, the satellite receiver 6 of first ground precision counter 4, first ground data processor 5, second ground master clock, the tested atomic clock 7 of second ground master clock, micro-meter 8 that jumps of second ground master clock, the precision counter 9 of second ground master clock, the data processor 10 of second ground master clock.
Wherein, first ground standard cesium-beam atomic clock and first ground is micro-to jump count and is connected, first ground precision counter respectively micro-with first ground jump count, first satellite receiver, first data processor be connected; ,
Wherein, micro-score that jumps of second ground master clock is not connected with the data processor of second ground master clock with the atomic clock of second ground master clock, the precision counter of second ground master clock jump with second ground master clock micro-respectively count, the satellite receiver of second ground master clock, second the data processor of master clock be connected;
Wherein, first ground data processor is connected with the data processor of second ground master clock.
Wherein, micro-meter that jumps of second ground master clock is connected with the data processor of second ground master clock.
Wherein, the satellite receiver of first ground satellite receiver and second ground master clock respectively has 16 passages, observes the continuous free of discontinuities comparison of multi-satellite simultaneously.
The calibration system specific implementation flow process of a kind of power information acquisition system of the utility model master clock is:
First ground satellite receiver 1 receives the pps pulse per second signal of the satellite-signal generation 1pps of locking;
First ground cesium-beam atomic clock 2 produces the signal of 10MHz in this locality;
The signal of the 10MHz that the micro-meter 3 that jumps in first ground produces according to first ground cesium-beam atomic clock 2 generates the pps pulse per second signal of 1pps and the signal of 10MHz, and wherein 1pps signal is the time signal on first ground;
The pps pulse per second signal that the micro-meter 3 that jumps of the pps pulse per second signal that first ground satellite receiver 1 produces and first ground produces accesses first ground precision counter 4 and compares;
First ground data processor 5 calculation process draws the difference of first ground standard time clock and satellite clock time;
The satellite receiver 6 of second ground master clock receives satellite-signal that first ground satellite receiver 1 locks and produces the pps pulse per second signal of 1pps;
The atomic clock 7 of second ground master clock produces the signal of 10MHz in this locality;
Micro-meter 8 that jumps of second ground master clock generates the pps pulse per second signal of 1pps and the signal of 10MHz according to the signal of the 10MHz of atomic clock 7 generation of second ground master clock, and wherein 1pps signal is as the time signal of Yi Di main website;
The precision counter 9 that the pps pulse per second signal that the pps pulse per second signal of satellite receiver 6 generation of second ground master clock and micro-meter 8 that jumps of second ground master clock produce accesses second ground master clock compares;
Data processor 10 calculation process of second ground master clock draws the time of Yi Di main website and the difference of satellite clock time;
The difference of first ground time and satellite clock time and the difference of second ground time and satellite clock time compare;
Comparative result is inputted the micro-meter that jumps in second ground and adjusts the second ground time by the data processor 10 of second ground master clock, and the deadline calibrates.
The utility model can carry out remote calibration to the tested temporal frequency equipment of each province's power information acquisition system, avoids the variety of problems that long-distance transportation brings.
The utility model can observe multi-satellite realize continuous free of discontinuities comparison simultaneously, has quite high reliability.
Laboratory, the utility model first, second two places receives same or several satellite-signals simultaneously, and measurement data can carry out later stage exchange process.
The utility model satellite essence plays instrumentality, and the impact that satellite-signal brings to measurement result due to atmospheric ionized layer and troposphere in transmitting procedure almost can be ignored.
The utility model first, second two places power equipment adopt simultaneously this time/frequency calibration modular system is when carrying out time/frequency comparison, measurement data can carry out later stage exchange process, not by the impact of the factors such as satellite clock error, propagation path delay, time uncertainty is better than 10ns, and frequency uncertainty is better than 5 × 10
-14.
Embodiment
If T
a(t), T
bt (), GPS (t) is respectively the clock of first, second two places power information acquisition system and satellite clock at the reading of t, records the time difference of each self-clock and gps clock, then in first, second two places simultaneously
ΔT
AG(t)＝T
A(t)-GPS(t)
ΔT
BG(t)＝T
B(t)-GPS(t)
Through exchanging data afterwards, can obtain first, second two places clock correction is
ΔT
AB(t)＝T
A(t)-T
B(t)＝ΔT
AG(t)-ΔT
BG(t)
Then t second ground clock actual value is
T
B(t)＝T
A(t)-ΔT
AB(t)
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit, although be described in detail the utility model with reference to above-described embodiment, those of ordinary skill in the field are to be understood that: still can modify to embodiment of the present utility model or equivalent replacement, and not departing from any amendment of the utility model spirit and scope or equivalent replacement, it all should be encompassed in the middle of right of the present utility model.
Claims (6)
1. a calibration system for power information acquisition system master clock, is characterized in that, described system comprises satellite receiver, atomic clock, micro-meter, precision counter and data processor of jumping;
Described precision counter respectively with satellite receiver, micro-jump meter be connected with data processor;
Described satellite receiver, atomic clock, micro-meter that jumps, precision counter are connected successively with data processor.
2. the calibration system of a kind of power information acquisition system master clock as claimed in claim 1, it is characterized in that, described system comprises first ground satellite receiver, first ground standard cesium-beam atomic clock, the micro-meter that jumps in first ground, first ground precision counter, first ground data processor, the satellite receiver of second ground master clock, the atomic clock of second ground master clock, micro-meter that jumps of second ground master clock, the second ground precision counter of master clock and the second ground data processor of master clock;
Described first ground standard cesium-beam atomic clock and first ground is micro-to jump to count and is connected; Described first ground precision counter respectively micro-with first ground jump count, first ground satellite receiver, first data processor be connected;
Micro-score that jumps of described second ground master clock is not connected with the data processor of second ground master clock with the atomic clock of second ground master clock; The precision counter of described second ground master clock jump with second ground master clock micro-respectively count, the satellite receiver of second ground master clock, second the data processor of master clock be connected.
3. the calibration system of a kind of power information acquisition system master clock as claimed in claim 1, is characterized in that, first ground data processor is connected with the data processor of second ground master clock.
4. the calibration system of a kind of power information acquisition system master clock as claimed in claim 1, is characterized in that, micro-meter that jumps of second ground master clock is connected with the data processor of second ground master clock.
5. the calibration system of a kind of power information acquisition system master clock as claimed in claim 1, is characterized in that, the satellite receiver of first ground satellite receiver and second ground master clock respectively has 16 passages, observes the continuous free of discontinuities comparison of multi-satellite simultaneously.
6. the calibration system of a kind of power information acquisition system master clock as claimed in claim 1, is characterized in that, the micro-score that jumps in first ground satellite receiver, first ground is not connected with first ground precision counter; The satellite receiver of second ground master clock, the micro-of second ground master clock jump to score and are not connected with second ground precision counter.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137751A (en) * | 2015-09-06 | 2015-12-09 | 中国电力科学研究院 | Calibration system for measuring production scheduling platform time value and calibration method thereof |
| CN105182273A (en) * | 2015-09-08 | 2015-12-23 | 中国电力科学研究院 | Calibration system used for verifying assembly line time value |
| CN105974787A (en) * | 2016-06-27 | 2016-09-28 | 中国电力科学研究院 | Onsite time test device based on satellite common-view technology and method |
| CN106059621A (en) * | 2016-06-27 | 2016-10-26 | 中国电力科学研究院 | Method, equipment and system for carrying out site testing on accuracy of wired time transmission |
| CN107300849A (en) * | 2017-06-13 | 2017-10-27 | 国网山东省电力公司青岛供电公司 | The measuring method and on-line monitoring system of a kind of precision clock |
| WO2020140939A1 (en) * | 2019-01-02 | 2020-07-09 | ***通信有限公司研究院 | Time synchronization method, device and system and storage medium |
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2014
- 2014-12-17 CN CN201420805203.3U patent/CN204389910U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105137751A (en) * | 2015-09-06 | 2015-12-09 | 中国电力科学研究院 | Calibration system for measuring production scheduling platform time value and calibration method thereof |
| CN105182273A (en) * | 2015-09-08 | 2015-12-23 | 中国电力科学研究院 | Calibration system used for verifying assembly line time value |
| CN105974787A (en) * | 2016-06-27 | 2016-09-28 | 中国电力科学研究院 | Onsite time test device based on satellite common-view technology and method |
| CN106059621A (en) * | 2016-06-27 | 2016-10-26 | 中国电力科学研究院 | Method, equipment and system for carrying out site testing on accuracy of wired time transmission |
| CN105974787B (en) * | 2016-06-27 | 2020-03-27 | 中国电力科学研究院 | On-site time testing device and method based on satellite common-view technology |
| CN106059621B (en) * | 2016-06-27 | 2021-04-02 | 中国电力科学研究院 | Method, equipment and system for testing wired time transmission accuracy on site |
| CN107300849A (en) * | 2017-06-13 | 2017-10-27 | 国网山东省电力公司青岛供电公司 | The measuring method and on-line monitoring system of a kind of precision clock |
| WO2020140939A1 (en) * | 2019-01-02 | 2020-07-09 | ***通信有限公司研究院 | Time synchronization method, device and system and storage medium |
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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: China Electric Power Research Institute Patentee after: STATE GRID JIANGSU ELECTRIC POWER COMPANY Research Institute Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: China Electric Power Research Institute Patentee before: JIANGSU ELECTRIC POWER COMPANY Research Institute |
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Effective date of registration: 20170123 Address after: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee after: State Grid Corporation of China Patentee after: China Electric Power Research Institute Patentee after: STATE GRID JIANGSU ELECTRIC POWER COMPANY Research Institute Patentee after: STATE GRID ZHEJIANG ELECTRIC POWER Co. Address before: 100031 Xicheng District West Chang'an Avenue, No. 86, Beijing Patentee before: State Grid Corporation of China Patentee before: China Electric Power Research Institute Patentee before: STATE GRID JIANGSU ELECTRIC POWER COMPANY Research Institute |