CN203101856U - Time synchronization system used for electric power communication - Google Patents
Time synchronization system used for electric power communication Download PDFInfo
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- CN203101856U CN203101856U CN 201220621143 CN201220621143U CN203101856U CN 203101856 U CN203101856 U CN 203101856U CN 201220621143 CN201220621143 CN 201220621143 CN 201220621143 U CN201220621143 U CN 201220621143U CN 203101856 U CN203101856 U CN 203101856U
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Abstract
The utility model provides a time synchronization system used for electric power communication. The time synchronization system used for electric power communication comprises a center station, time equipment I, time equipment II, a PTP switch box I, a PTP switch box II, BITS equipment and relay protection equipment, wherein the center station controls the time equipment I and the time equipment II through an IP network, the time equipment I realizes mutual communication with the time equipment II through SD network communication after carrying out signal conversion through the PTP switch box I, the BITS equipment is taken as a frequency reference source and is respectively connected with the time equipment I and the time equipment II, and the relay protection equipment is connected with the time equipment I or the time equipment II through a B-mode interface. The time synchronization system used for electric power communication can realize a function of interface butting though the B-mode interface from a clock and electric power protection equipment, realizes time comparison of electric power protection equipment. The clock has two paths of air and ground time service signals, so reliability of the clock is improved.
Description
Technical field
The utility model belongs to the power communication field of synchronization, is specifically related to a kind of clock synchronization system that is used for power communication.
Background technology
In electric power communication synchronization network, clockwork mainly adopts the mode of GPS time service to realize time synchronized, and minority is introduced Big Dipper receiver.GPS is difficult for control, has serious potential safety hazard.And the big-dipper satellite system is easily controlled with respect to GPS, and open civilian, introduces the big-dipper satellite system, is purpose to replace GPS fully finally, thereby breaks away from the dependence to the aerial time service of GPS.
The utility model content
At the deficiencies in the prior art, the utility model proposes a kind of clock synchronization system that is used for power communication, improved the reliability of time synchronized.
A kind of clock synchronization system that is used for power communication that the utility model provides, its improvements are that described clock synchronization system comprises central station, clockwork I, clockwork II, PTP interconnecting device I, PTP interconnecting device II, BITS equipment and relay protection device;
Described central station is controlled described clockwork I and described clockwork II by IP network;
Described clockwork I intercoms with described clockwork II mutually by SDH network service after through described PTP interconnecting device I signal being transformed;
Described BITS equipment is connected with clockwork II with described clockwork I respectively as the frequency reference source;
Described relay protection device is connected with clockwork I or clockwork II by B sign indicating number interface.
Wherein, described clockwork I and described clockwork II have GPS and Big Dipper receiving antenna, and according to priority level initializing or press signal quality and select GPS or Big Dipper time source as output reference.
Wherein, described clockwork I and described clockwork II comprise E1 interface, B sign indicating number interface, network time interface and protocol interface.
Wherein, described clockwork I and described clockwork II are made as major clock according to the rank of priority and from clock;
Described major clock is placed on the scheduling building, is placed on transformer station from clock.
Wherein, described clock synchronization system comprises clockwork III one or more to clockwork N, and the number of its clockwork is determined according to engineering.
Wherein, described relay protection device passes through B sign indicating number interface and is connected from clock.
Wherein, provide 2M passage during described SDH network service.
Compared with the prior art, the beneficial effects of the utility model are:
System can realize from clock and electrical protection apparatus by the function that B sign indicating number interface docks, be implemented on the electrical protection apparatus to the time.Have aerial and ground two-way time signal from clock, 1. part in the air: directly accept the aerial time signal of the GPS/ Big Dipper from clock, send the electric power secondary device to by B sign indicating number interface.2. terrestrial links part: major clock receives the time signal that sends from GPS or big-dipper satellite, and time signal sends to from clock through the SDH network, sends in the electric power secondary device through the B coding mode again.It has strengthened the reliability of clock.
The SDH network only provides the 2M passage, to the time signal transparent transmission, so the SDH network is very little to the time output influence from clock in active and standby usefulness routing switch process, has improved efficient.
Aloft time signal under the condition of empty usefulness, is not introduced the mode of SDH terrestrial links time service, forms the time synchronizing method of " world is equipped with mutually ", strengthens the clock synchronization system reliability.
Description of drawings
The structural representation of the clock synchronization system that is used for power communication 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.
" world is equipped with mutually " system is meant the system that aerial time service and terrestrial links time service function combine, and comprises two kinds of time signal transmission modes of time signal of overhead satellites time signal and ground SDH transmission, so be called " world is equipped with mutually ".This system mainly is made up of clock source and transmission network (SDH network), and wherein, the clock source is by external antenna equipment, clock equipment, form from equipment such as clockwork, PTP interconnecting devices.The SDH network provides 2M passage, transmits high-precision PTP time signal.
The system architecture synoptic diagram as shown in Figure 1.Among the figure, clock synchronization system comprises central station, clockwork I, clockwork II, PTP interconnecting device I, PTP interconnecting device II, BITS equipment and relay protection device;
Described central station is equipped with system network management, by IP network management system clockwork;
Described clockwork I intercoms with described clockwork II mutually by SDH network service after through described PTP interconnecting device I ethernet signal being changed into the transmissible E1 signal of SDH network;
Described BITS equipment is connected with clockwork II with described clockwork I respectively as the frequency reference source, prevents shake that the adjustment of SDH pointer causes etc.;
Described relay protection device is connected with clockwork I or clockwork II by B sign indicating number interface.
Principal and subordinate's clock is except having GPS and Big Dipper receiving antenna, should have B sign indicating number optical fiber interface at least and be used for the connection of standby clock, should have the E1 interface and be used for the access in stabilized frequency source, should have protocol interface, as PTP agreement input/output port, be used for the output of protocol interaction and time synchronizing signal etc.
The SDH network provides the 2M passage to the time signal transparent transmission, receive the time synchronizing signal of major clock (be placed on usually province transfers or communications equipment room is transferred on ground) from clock (being placed on transformer station usually) by the SDH network, this ground link signal and the GPS/ Big Dipper signal that receives from clock form the pattern of " world is equipped with mutually ".
In system's construction scheme, the time synchronized source comprises the reference clock on upper strata and the slave clock of following one deck, and reference clock (major clock) is placed on province's accent usually or ground is transferred, and slave clock (from clock) is placed on transformer station.
Reference clock extracts the reference time synchronizing signal as the major clock of the whole network from big-dipper satellite or GPS, realizes the time synchronized between the whole network clockwork, and output lock in time is provided.Synchronous by the SDH network delivery time, backup each other with the existing Big Dipper of electrical network/GPS time service, (Big Dipper/GPS) (transmission) is equipped with mutually to set up the sky of electrical network time dissemination system, realize that a plurality of clocks source switches flexibly, aerial and ground time service is equipped with mutually, thereby improve the reliability and the signal accuracy of system, support the power telecommunication network network better.
The unidirectional 100ns of Big Dipper time service precision, the two-way 20ns that reaches, GPS time service precision 20ns; The numerous business of electric system require as power grid control class business (business such as the guarantor that continues, stable, dispatching automation, dispatching telephone) that the communication port propagation delay time is little, real-time is high, require very high to time synchronized.This system has the high precision clock source, can be all clock source time services of electric system.And switch flexibly in a plurality of clocks source, forms the mode that the world is equipped with mutually, breaks away from the dependence to GPS.
For guaranteeing the stable, reliable of system, self punctual precision of principal and subordinate's clock should be able to be according to demand 5 * 10
-9~ 2 * 10
-11Between select.The configuration of principal and subordinate's clock is as follows:
1. power supply is 2: guarantee 1+1 backup;
2. alarm indication: the abnormal conditions that can in time reflect equipment and signal;
3. master control borad is 1: link to each other with network management system, guarantee the parameter that network management system can the Remote configuration clock, and the state of monitoring clock;
4. GPS interface: the band antenna, can accept the gps satellite time signal;
5. Big Dipper interface: the band antenna, can accept the big-dipper satellite time signal;
6. network time interface: ethernet signal that can input and output PTP agreement;
7. E1 interface: have 75 Ω interfaces, can introduce stable frequency source BITS as a reference.
8. B sign indicating number interface: can realize the input and output of B sign indicating number, so that being equipped with mutually between the clock for a long time to be provided.
Should be noted that at last: above embodiment only is not intended to limit in order to the explanation the technical solution of the utility model, although the utility model is had been described in detail with reference to the foregoing description, those of ordinary skill in the field are to be understood that: still can make amendment or be equal to replacement embodiment of the present utility model, and do not break away from any modification of the utility model spirit and scope or be equal to replacement, it all should be encompassed in the middle of the claim scope of the present utility model.
Claims (7)
1. a clock synchronization system that is used for power communication is characterized in that, described clock synchronization system comprises central station, clockwork I, clockwork II, PTP interconnecting device I, PTP interconnecting device II, BITS equipment and relay protection device;
Described central station is controlled described clockwork I and described clockwork II by IP network;
Described clockwork I intercoms with described clockwork II mutually by SDH network service after through described PTP interconnecting device I signal being transformed;
Described BITS equipment is connected with clockwork II with described clockwork I respectively as the frequency reference source;
Described relay protection device is connected with clockwork I or clockwork II by B sign indicating number interface.
2. clock synchronization system as claimed in claim 1 is characterized in that, described clockwork I and described clockwork II have GPS and Big Dipper receiving antenna, and according to priority level initializing or press signal quality and select GPS or Big Dipper time source as output reference.
3. as the arbitrary described clock synchronization system of claim 1-2, it is characterized in that described clockwork I and described clockwork II comprise E1 interface, B sign indicating number interface, network time interface and protocol interface.
4. clock synchronization system as claimed in claim 2 is characterized in that, described clockwork I and described clockwork II are made as major clock according to the rank of priority and from clock;
Described major clock is placed on the scheduling building, is placed on transformer station from clock.
5. clock synchronization system as claimed in claim 1 is characterized in that, described clock synchronization system comprises clockwork III one or more to clockwork N, and the number of its clockwork is determined according to engineering.
6. clock synchronization system as claimed in claim 1 is characterized in that, described relay protection device passes through B sign indicating number interface and is connected from clock.
7. clock synchronization system as claimed in claim 1 is characterized in that, provides 2M passage during described SDH network service.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621143 CN203101856U (en) | 2012-11-21 | 2012-11-21 | Time synchronization system used for electric power communication |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220621143 CN203101856U (en) | 2012-11-21 | 2012-11-21 | Time synchronization system used for electric power communication |
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| CN203101856U true CN203101856U (en) | 2013-07-31 |
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| CN 201220621143 Expired - Lifetime CN203101856U (en) | 2012-11-21 | 2012-11-21 | Time synchronization system used for electric power communication |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744284A (en) * | 2014-01-08 | 2014-04-23 | 国家电网公司 | Two-end time synchronization triggering system and method applied to parameter measurement of power transmission line |
| CN105162544A (en) * | 2015-09-30 | 2015-12-16 | 南京务本信息科技有限责任公司 | System time keeping method based on SDH network |
| CN105553109A (en) * | 2016-02-29 | 2016-05-04 | 许昌学院 | Method for remotely transmitting image monitoring signals of transformer substation |
| CN106850117A (en) * | 2017-04-05 | 2017-06-13 | 深圳市太铭科技有限公司 | A kind of miniature high-precision time synchronism apparatus |
| 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 |
| CN107817676A (en) * | 2017-09-27 | 2018-03-20 | 中国科学院长春光学精密机械与物理研究所 | A kind of time terminal system |
| CN113595667A (en) * | 2021-06-28 | 2021-11-02 | 北京中电飞华通信有限公司 | Time synchronization system and method for power terminal and base station |
-
2012
- 2012-11-21 CN CN 201220621143 patent/CN203101856U/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103744284A (en) * | 2014-01-08 | 2014-04-23 | 国家电网公司 | Two-end time synchronization triggering system and method applied to parameter measurement of power transmission line |
| CN103744284B (en) * | 2014-01-08 | 2016-04-06 | 国家电网公司 | A kind of two ends time synchronized triggering system for power transmission line parameter measurement and method |
| CN105162544A (en) * | 2015-09-30 | 2015-12-16 | 南京务本信息科技有限责任公司 | System time keeping method based on SDH network |
| CN105553109A (en) * | 2016-02-29 | 2016-05-04 | 许昌学院 | Method for remotely transmitting image monitoring signals of transformer substation |
| CN106850117A (en) * | 2017-04-05 | 2017-06-13 | 深圳市太铭科技有限公司 | A kind of miniature high-precision time synchronism apparatus |
| 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 |
| CN107817676A (en) * | 2017-09-27 | 2018-03-20 | 中国科学院长春光学精密机械与物理研究所 | A kind of time terminal system |
| CN113595667A (en) * | 2021-06-28 | 2021-11-02 | 北京中电飞华通信有限公司 | Time synchronization system and method for power terminal and base station |
| CN113595667B (en) * | 2021-06-28 | 2024-05-07 | 北京中电飞华通信有限公司 | Time synchronization system for power terminal, method thereof and base station |
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Granted publication date: 20130731 |
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