CN203455626U - Time service system guaranteeing full-grid time synchronization of power grid - Google Patents
Time service system guaranteeing full-grid time synchronization of power grid Download PDFInfo
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- CN203455626U CN203455626U CN201320533629.3U CN201320533629U CN203455626U CN 203455626 U CN203455626 U CN 203455626U CN 201320533629 U CN201320533629 U CN 201320533629U CN 203455626 U CN203455626 U CN 203455626U
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- 229910052701 rubidium Inorganic materials 0.000 claims abstract description 47
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 claims abstract description 47
- 230000001360 synchronised effect Effects 0.000 claims description 14
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 11
- 238000004891 communication Methods 0.000 abstract description 4
- 238000012544 monitoring process Methods 0.000 abstract description 2
- 238000012806 monitoring device Methods 0.000 abstract 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012163 sequencing technique Methods 0.000 description 1
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Abstract
The utility model relates to a time service system guaranteeing full-grid time synchronization of a power grid. The time service system includes substations disposed in the power grid. Each substation is provided with a time synchronizing module used for synchronizing time with the GPS/Beidou satellite and a controllable rubidium atomic clock. The substation is further provided with a clock monitoring device which is used for monitoring two paths of GPS/Beidou clocks of the time synchronizing module. The clock monitoring device is provided with a controllable rubidium clock interface for calibrating a rubidium clock time synchronizing vehicle. The clock monitoring device is further connected with the controllable rubidium atomic clock in the substation. The time service system further includes a special power communication network. Clock monitoring devices in all transformer substations are all connected with the special power communication network. The time service system is simple in structure, high in accuracy and capable of meeting requirements for safe operation of the power grid for a long time.
Description
Technical field
The utility model relates to the clock synchronization system in electrical network, refers to particularly a kind of time dissemination system that ensures electrical network the whole network time synchronized.
Background technology
Along with the expansion of electrical network scale and the raising of automatization level, not only as the transformer station of electrical network basic composition unit, generating plant and dispatching center inner numerous with the time have the automation equipment of substantial connection and Digitizing And Control Unit more and more higher to the degree of dependence of unification, precision time service, and the record to generation event in electrical network, as more and more higher to the requirement of time precision in the accurate unification of electric network fault confirmation, logout and alarm time constantly, system operation situation, performance evaluation etc.In order to guarantee the unitarity of system time, in electrical network, be mainly to utilize GPS (GPS)/Big Dipper precision time service to be provided, system clock is calibrated at present.
Yet GPS is controlled by US military. its availability and time service precision are limited by the GPS policy of the U.S., have certain risk and non-reliability.The Big Dipper satellite navigation system of China is because number of satellite is limited, and precision does not still meet electric system requirement, uses not yet on a large scale.In this case, very likely occur that network system clock does not have the situation of calibration for a long time, accumulated error, causes appreciable clocking error, will be to power grid security, economy, high-quality operation, and crash analysis and operation scientific management cause and have a strong impact on.For example: always adjust EMS system to send to netting interior inter-provincial interconnection the examination that is subject to electric power, the clock system of the EMS system of adjusting due to each province (district) and mutual error, send every 10min that scheduling EMS main website collections at different levels record print and be subject to power components and total value added difference that has; When have an accident Shi， EMS main website collection to record time of the relevant isolating switch of accident plant stand action inconsistent actuation time with the isolating switch of relay protection device record of electrical network, and the even relative breaker that occurs is moved sequencing and actual act order and is not inconsistent; Power grid electric quantity acquisition and charge system, per minute gathers correlometer gauge point electric weight and statistical computation goes out to settle accounts the electricity charge, also due to the source of error of different main station system clock systems, for the charge value in a certain moment, always has difference etc.
In a word, on the basis of GPS/ Big Dipper the whole network unified standard clock, establish and improve standard time clock that the whole network is unified standby to time system be very important, be also badly in need of.In addition, the mode of DCLS delay compensation, NTP (Network Time Protocol NTP (Network Time Protocol)) and P (Precision Time Protocol precise time to time) equal time synchro system networking, can guarantee the time unification of regional power grid, but realize the whole network time unification, by expending a large amount of communication resources, be unfavorable for electric power netting safe running.
Summary of the invention
The purpose of this utility model provides a kind of time dissemination system that ensures electrical network the whole network time synchronized with regard to being to overcome above-mentioned the deficiencies in the prior art, and this time dissemination system is simple in structure, and precision is high, is beneficial to the application in actual electric network.
The technical scheme that realizes the employing of the utility model object is: a kind of time dissemination system that ensures electrical network the whole network time synchronized, comprise the transformer station being located in electrical network, described transformer station be provided with for GPS/ big-dipper satellite carry out to time to time module and controlled rubidium atomic clock.
In technique scheme, described transformer station is also provided with clock supervision device, described clock supervision device for monitor to time module 2 road GPS/ big dipper clocks.
In technique scheme, described clock supervision device be provided with for rubidium clock to time the car controlled rubidium clock interface calibrated.
In technique scheme, the controlled rubidium atomic clock in the transformer station of described clock supervision device Hai Yuqi place connects.
Further, ensure that the time dissemination system of electrical network the whole network time synchronized also comprises electric power private wire network, the clock supervision device in each transformer station is all connected in this electric power private wire network.
The utility model to time module normal operation situation under, in electrical network transformer substation system by time module and GPS/ big-dipper satellite carry out to time, obtain high precision clock, and in the cycle, calibrate controlled rubidium atomic clock in this transformer station at certain hour; To time module operation abnormal condition under, in net, in transformer substation system slave station, controlled rubidium atomic clock obtains high precision clock, because rubidium atomic clock time precision is 1.6 * 10
-6s, with respect to the time precision ms level of network system demand, can guarantee to meet electric power netting safe running requirement within longer a period of time.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model ensures the time dissemination system of electrical network the whole network time synchronized.
Syndeton schematic diagram in Tu2Wei Tu1Zhong transformer station.
Another kind of syndeton schematic diagram in Tu3Wei Tu1Zhong transformer station.
Fig. 4 is the networking structural representation that the utility model ensures the time dissemination system of electrical network the whole network time synchronized.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment 1
As shown in Figure 1, ensure that the time dissemination system of electrical network the whole network time synchronized comprises the transformer station being located in electrical network, described transformer station be provided with for GPS/ big-dipper satellite carry out to time to time module and controlled rubidium atomic clock.
In the present embodiment, can, by configuring a controlled rubidium atomic clock at important transformer station/current conversion station or all transformer stations, ensure Wang Nei transformer station time unification.To time module normal operation situation under, in electrical network transformer substation system by with GPS/ big-dipper satellite carry out to time, obtain high precision clock, and in the cycle, calibrate controlled rubidium atomic clock in this transformer station at certain hour; To time module operation abnormal condition under, in net, in transformer substation system slave station, controlled rubidium atomic clock obtains high precision clock, because rubidium atomic clock time precision is 1.6 * 10
-6s, with respect to the time precision ms level of network system demand, can guarantee to meet electric power netting safe running requirement within longer a period of time; In addition, consider may exist to time module ultra-long time in abnormal running and all transformer stations controlled rubidium atomic clock life period cycle and scheduling are installed, adopt rubidium clock to time truck mobile to time mode, to not yet install the transformer station of controlled rubidium atomic clock carry out to time and to controlled rubidium atomic clock in the unregulated station of ultra-long time carry out to time, rubidium clock to time car execute the task Qian，Xu Yu dispatching center cesium-beam atomic clock to time.
Embodiment 2
In order to ensure the confidence level of time dissemination system in station, in standing, time dissemination system adopts two GPS/ big dipper clock Redundancy Design, in ensureing the transformer station of time dissemination system of electrical network the whole network time synchronized, embodiment 1 increases by a clock supervising device, by clock supervision device monitoring 2 tunnels to time module clock, and analysis judgement, consider that transformer station installs the time cycle of controlled rubidium clock, clock supervision device retains a controlled rubidium clock interface, ensures that clock supervision device exports the clock of expanding clock to credible, accurate.
The present embodiment system architecture as shown in Figure 2, clock supervision device to the output signal of expanding clock with to time module major clock I consistent.Clock supervision device transformer substation system each to time the cycle in, respectively to time module major clock I, major clock II obtain clock signal, be analyzed, control output: if major clock I, major clock II normal operation, clock, in permissible error, keeps clock output signal constant; If major clock I or major clock II operation step-out, two-way major clock deviation is larger, clock supervision device notice dispatching center, dispatching center arrange rubidium clock to time pull in, the controlled rubidium atomic clock incoming clock of movable type supervising device spare interface is analyzed, the clock signal that clock supervision device is got the controlled rubidium atomic clock of movable type of access is usingd the clock of the controlled rubidium clock of this movable type and is compared as benchmark, deviation is large is step-out clock, and clock supervision device switches immediately output signal and keeps with normally major clock is consistent; If to time module be interfered or major clock damages, signal output when two-way Huo Yi road major clock is unmatchful, clock supervision device notice dispatching center, dispatching center arrange rubidium clock to time pull in, by the controlled rubidium atomic clock incoming clock of movable type supervising device spare interface, clock supervision device switches immediately output signal and keeps consistent with portable controlled rubidium atomic clock.
Embodiment 3
In order further to ensure the confidence level of time dissemination system in station, the present embodiment is on the basis of embodiment 2 time dissemination systems, and the controlled rubidium atomic clock in clock supervision device Hai Yu transformer station connects.
The present embodiment system architecture as shown in Figure 3, clock supervision device to the output signal of expanding clock with to time module major clock I consistent.Clock supervision device transformer substation system each to time the cycle in, respectively to time module major clock I, major clock II, controlled rubidium clock obtain clock signal, be analyzed, control output: if major clock I, major clock II normal operation, clock is in permissible error, keep clock output signal constant, and judge whether to reach rubidium clock calibration cycle, calibrate controlled rubidium clock; If major clock I or major clock II operation step-out, two-way major clock deviation is larger, the clock signal that clock supervision device is got controlled rubidium clock is usingd the clock of controlled rubidium clock and is compared as benchmark, deviation is large is step-out clock, clock supervision device switches immediately output signal and keeps consistent with normal major clock, and notifies dispatching center; If to time module by signal be interfered or major clock damages, signal output when two-way Huo Yi road major clock is unmatchful, clock supervision device switches immediately output signal and keeps consistent with controlled rubidium atomic clock, and notify dispatching center, dispatching center arrange rubidium clock to time pull in, by the controlled rubidium atomic clock incoming clock of movable type supervising device spare interface, clock supervision device switches immediately output signal and keeps consistent with portable controlled rubidium atomic clock.
As shown in Figure 4, the utility model can also be by the existing electric power dedicated communications network of transformer station, one the whole network clock monitoring center is set in dispatching center, by the clock supervision device in each transformer station in station to time module the control information of step-out, damage information and controlled rubidium clock be uploaded to monitoring center, so that operation maintenance personnel take necessary measure in time, ensure electrical network time unification; To add up the error of in-service controlled rubidium clock, find and change in time the rubidium atomic clock of bigger error.
Claims (5)
1. ensure a time dissemination system for electrical network the whole network time synchronized, comprise the transformer station being located in electrical network, it is characterized in that: described transformer station be provided with for GPS/ big-dipper satellite carry out to time to time module and controlled rubidium atomic clock.
2. ensure according to claim 1 the time dissemination system of electrical network the whole network time synchronized, it is characterized in that: described transformer station is also provided with clock supervision device, described clock supervision device for monitor to time module 2 road GPS/ big dipper clocks.
3. ensure according to claim 2 the time dissemination system of electrical network the whole network time synchronized, it is characterized in that: described clock supervision device be provided with for rubidium clock to time the car controlled rubidium clock interface calibrated.
4. according to the time dissemination system that ensures electrical network the whole network time synchronized described in claim 2 or 3, it is characterized in that: the controlled rubidium atomic clock in the transformer station of described clock supervision device Hai Yuqi place connects.
5. ensure according to claim 4 the time dissemination system of electrical network the whole network time synchronized, it is characterized in that: also comprise electric power private wire network, the clock supervision device in each transformer station is all connected in this electric power private wire network.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320533629.3U CN203455626U (en) | 2013-08-29 | 2013-08-29 | Time service system guaranteeing full-grid time synchronization of power grid |
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| CN201320533629.3U CN203455626U (en) | 2013-08-29 | 2013-08-29 | Time service system guaranteeing full-grid time synchronization of power grid |
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| CN203455626U true CN203455626U (en) | 2014-02-26 |
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| CN201320533629.3U Expired - Lifetime CN203455626U (en) | 2013-08-29 | 2013-08-29 | Time service system guaranteeing full-grid time synchronization of power grid |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412477A (en) * | 2013-08-29 | 2013-11-27 | 国家电网公司 | Timing system capable of guaranteeing full-grid time synchronization of power grid |
| CN104065935A (en) * | 2014-06-27 | 2014-09-24 | 山东山大电力技术有限公司 | Automatic time synchronization system for transformer substation video monitoring mainframe and time synchronization method thereof |
| CN105068418A (en) * | 2015-08-27 | 2015-11-18 | 保定维特瑞交通设施工程有限责任公司 | Time synchronization control system of traffic management system |
| CN112327765A (en) * | 2020-10-20 | 2021-02-05 | 中国核电工程有限公司 | Design method for redundant time service architecture of distributed control system of nuclear power plant |
| CN112327598A (en) * | 2020-11-06 | 2021-02-05 | 国网山东省电力公司信息通信公司 | IRIG-B code-based ground link time service test system and method for time synchronization device |
| CN113489599A (en) * | 2021-05-27 | 2021-10-08 | 国网浙江省电力有限公司湖州供电公司 | Substation time synchronization verification system and time synchronization defect elimination method |
-
2013
- 2013-08-29 CN CN201320533629.3U patent/CN203455626U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103412477A (en) * | 2013-08-29 | 2013-11-27 | 国家电网公司 | Timing system capable of guaranteeing full-grid time synchronization of power grid |
| CN103412477B (en) * | 2013-08-29 | 2016-09-07 | 国家电网公司 | Ensure the time dissemination system of electrical network the whole network time synchronized |
| CN104065935A (en) * | 2014-06-27 | 2014-09-24 | 山东山大电力技术有限公司 | Automatic time synchronization system for transformer substation video monitoring mainframe and time synchronization method thereof |
| CN105068418A (en) * | 2015-08-27 | 2015-11-18 | 保定维特瑞交通设施工程有限责任公司 | Time synchronization control system of traffic management system |
| CN112327765A (en) * | 2020-10-20 | 2021-02-05 | 中国核电工程有限公司 | Design method for redundant time service architecture of distributed control system of nuclear power plant |
| CN112327598A (en) * | 2020-11-06 | 2021-02-05 | 国网山东省电力公司信息通信公司 | IRIG-B code-based ground link time service test system and method for time synchronization device |
| CN112327598B (en) * | 2020-11-06 | 2022-03-04 | 国网山东省电力公司信息通信公司 | IRIG-B code-based ground link time service test system and method for time synchronization device |
| CN113489599A (en) * | 2021-05-27 | 2021-10-08 | 国网浙江省电力有限公司湖州供电公司 | Substation time synchronization verification system and time synchronization defect elimination method |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20140226 Effective date of abandoning: 20160907 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |