CN104734338A - Clock monitoring method, device and system of transformer substations - Google Patents
Clock monitoring method, device and system of transformer substations Download PDFInfo
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- CN104734338A CN104734338A CN201310713816.4A CN201310713816A CN104734338A CN 104734338 A CN104734338 A CN 104734338A CN 201310713816 A CN201310713816 A CN 201310713816A CN 104734338 A CN104734338 A CN 104734338A
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
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Abstract
The invention discloses a clock monitoring method, device and system of transformer substations. The clock monitoring method of the transformer substations comprises the steps that time signals of all the transformer substations are collected to obtain multiple instation time signals; a standard time signal is received; whether each instation time signal is in accordance with the standard time signal is judged; the standard time signal is utilized to calibrate a target instation time signal, wherein the target instation time signal is a judged instation time signal which is not in accordance with the standard time signal. According to the clock monitoring method, device and system of the transformer substations, the problem that in the prior art, clocks in the power grid transformer substations are difficult to keep accordant is solved, and therefore the effect of ensuring the clock accordance and improving the clock accuracy is achieved.
Description
Technical field
The present invention relates to transformer station field, in particular to a kind of clock monitoring method of transformer station, device and system.
Background technology
Time synchronized is a key technology in automated system.Time synchronization error causes the observation error of automated system, reduces the precision of the elements such as measurement and control unit, electric energy meter power calculation, WAMS analysis, failure wave-recording, differential protection, and protection act sequential confusion is made troubles to accident analysis.Especially along with the construction of intelligent substation is promoted, to the demand of timing tracking accuracy higher (Microsecond grade) after a signal sampling digitlization.
Substantially all clock synchronization apparatus has been installed in current electrical network transformer station at different levels, has achieved the synchronous of the interior each system clock in station; But clock synchronization apparatus all is at present all respective independent operating, lack necessary operation monitoring means, be difficult to keep the clock of transformer station at different levels consistent, and the time synchronism apparatus run at present due to the reason of history is time source mainly with GPS System in USA, there is certain strategic security hidden danger.
Along with the construction of extra-high voltage grid and the propelling of " three Hua Lian nets " engineering, domestic integrated power system is progressively formed.The relevance of electrical network is tightr; system is more complicated; it is main key electric power transmission network that current each province has defined based on 500kV, and when the accident analysis location of this interconnected power network needs each regional power system, discontinuity surface is unified and to proterctive equipment accurate time transmission precision more.
Be difficult to the problem be consistent for clock in electricity grid substation in correlation technique, not yet propose effective solution at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of clock monitoring method of transformer station, device and system, is difficult to solve in prior art clock in electricity grid substation the problem be consistent.
To achieve these goals, according to an aspect of the present invention, a kind of clock monitoring method of transformer station is provided.
Clock monitoring method according to transformer station of the present invention comprises: the time signal gathering each transformer station, obtains time signal in multiple station; Receive time reference signal; Judge that in each station, whether time signal is consistent with time reference signal; And utilize time signal in time reference signal calibration target station, wherein, in Target Station, time signal is time signal in the station inconsistent with time reference signal judged.
Further, the time signal gathering each transformer station comprises: the time signal gathering time service device in each transformer station.
Further, the time signal gathering each transformer station comprises: the triggering signal gathering event sequence recording system SOE in each transformer station; And the temporal information extracted in each triggering signal, obtain time signal in multiple station.
Further, the time signal gathering each transformer station comprises: the telemetered signal gathering proterctive equipment in each transformer station; Extract the temporal information in each telemetered signal, obtain time signal in multiple station.
Further, receive time reference signal to comprise: receive the time reference signal from Beidou II satellite; And/or the time reference signal received from gps satellite.
Further, time signal in time reference signal calibration target station is utilized to comprise: to drive layer to utilize time signal in time reference signal calibration target station at Ethernet; Or utilize time signal in time reference signal calibration target station in data link layer; Or utilize time signal in time reference signal calibration target station in physical layer.
To achieve these goals, according to a second aspect of the invention, a kind of clock monitor device of transformer station is provided.
Clock monitor device according to transformer station of the present invention comprises: collecting unit, for gathering the time signal of each transformer station, obtains time signal in multiple station; Receiving element, for receiving time reference signal; Judging unit, for judging that in each station, whether time signal is consistent with time reference signal; And alignment unit, for utilizing time signal in time reference signal calibration target station, wherein, in Target Station, time signal is time signal in the station inconsistent with time reference signal judged.
Further, collecting unit comprises: the first acquisition module, for gathering the time signal of time service device in each transformer station.
Further, collecting unit comprises: the second acquisition module, for gathering the triggering signal of event sequence recording system SOE in each transformer station; And first extraction module, for extracting the temporal information in each triggering signal, obtain time signal in multiple station.
Further, collecting unit comprises: the 3rd acquisition module, for gathering the telemetered signal of proterctive equipment in each transformer station; Second extraction module, for extracting the temporal information in each telemetered signal, obtains time signal in multiple station.
Further, receiving element comprises: the first receiver module, for receiving the time reference signal from Beidou II satellite; And/or second receiver module, for receiving the time reference signal from gps satellite.
Further, alignment unit comprises: the first calibration module, for driving layer to utilize time signal in time reference signal calibration target station at Ethernet; Or second calibration module, for utilizing time signal in time reference signal calibration target station in data link layer; Or the 3rd calibration module, for utilizing time signal in time reference signal calibration target station in physical layer.
To achieve these goals, according to a third aspect of the invention we, a kind of clock monitor system of transformer station is provided.
The clock monitor device of any one transformer station that foregoing of the present invention provides is comprised according to the clock monitor system of transformer station of the present invention.
The present invention adopts the time signal gathering each transformer station, obtains time signal in multiple station; Receive time reference signal; Judge that in each station, whether time signal is consistent with time reference signal; And utilize time signal in time reference signal calibration target station, wherein, in Target Station, time signal is time signal in the station inconsistent with time reference signal judged.By the clock monitor device monitored the time signal of each transformer station, judge and calibrate, achieve the clock of unified each transformer station of monitoring, to solve in prior art clock in electricity grid substation and be difficult to the problem be consistent, and then reach the effect ensureing clock consistency, improve clock accuracy.
Accompanying drawing explanation
The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram of the clock monitor system of transformer station according to the embodiment of the present invention;
Fig. 2 is the schematic diagram of the clock monitor device of transformer station according to the embodiment of the present invention; And
Fig. 3 is the flow chart of the clock monitoring method of transformer station according to the embodiment of the present invention.
Embodiment
It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.
Embodiments provide a kind of clock monitor system of transformer station, below concrete introduction done to the clock monitor system that the embodiment of the present invention provides:
Fig. 1 is the schematic diagram of the clock monitor system of transformer station according to the embodiment of the present invention, as shown in Figure 1, this clock monitor system mainly comprises 101 to transformer station of transformer station 10n and clock monitor device 200, wherein, clock monitor device 200 is mainly used in receiving time reference signal, and utilize time reference signal judge the time signal of target substation in 101 to transformer station of transformer station 10n and calibrate, wherein, time reference signal also can be the time reference signal from Beidou II satellite, also can be the time reference signal from gps satellite, if in the station of certain transformer station 10i time signal and time reference signal inconsistent, then determine that this transformer station 10i is a target substation, namely clock monitor device 200 carries out time calibration to this target substation.
By arranging the clock monitor device can monitored, judge and calibrate the time signal of each transformer station, achieve the clock of unified each transformer station of monitoring, to solve in prior art clock in electricity grid substation and be difficult to the problem be consistent, and then reach the effect ensureing clock consistency, improve clock accuracy.
Below in conjunction with the clock monitor device of the transformer station of the invention process shown in Fig. 2, concrete introduction is done to the clock monitor device of the transformer station of the embodiment of the present invention:
As shown in Figure 2, the clock monitor device of the transformer station of the embodiment of the present invention mainly comprises collecting unit 10, receiving element 20, judging unit 30 and alignment unit 40, wherein:
Collecting unit 10 is for gathering the time signal of each transformer station, obtain time signal in multiple station, particularly, each transformer station comprises time synchronism apparatus in station, it is interior by time service device and time management unit device TMU stand, collecting unit 10, mainly through communicating with time management unit device TMU, gathers the time signal of transformer station.
Receiving element 20 is for receiving time reference signal, particularly, this time reference signal can be the time reference signal from Beidou II satellite, also can be the time reference signal from gps satellite, can also be from transformer station the wired time reference signal of higher level (namely, PTP temporal information, atomic time).
Judging unit 30 is all connected with receiving element 20 with collecting unit 10, for judging that in each station, whether time signal is consistent with time reference signal, that is, the time in each station represented by time signal is judged one by one, whether identical with the time represented by time reference signal.
Alignment unit 40 is for utilizing time signal in time reference signal calibration target station, wherein, in Target Station, time signal is time signal in the station inconsistent with time reference signal judged, namely, when judging that in the station determining which transformer station, time signal and time reference signal are inconsistent, in the station determining this transformer station, time signal is time signal in Target Station, and time signal in this Target Station is set to time reference signal.
By monitoring the time signal of each transformer station, judge and calibrate, achieve the clock of unified each transformer station of monitoring, to solve in prior art clock in electricity grid substation and be difficult to the problem be consistent, and then reach the effect ensureing clock consistency, improve clock accuracy.
Further, collecting unit 10 can comprise the first acquisition module, the time management unit device TMU of this first acquisition module and each transformer station writes to each other, and for gathering the time signal of time service device in each transformer station, obtains time signal in multiple station.
Collecting unit 10 can also comprise the second acquisition module and the first extraction module, wherein, second acquisition module is same writes to each other with the time management unit device TMU of each transformer station, for to event sequence recording system SOE(Sequence Of Event in each transformer station) triggering signal gather, first extraction module then for extracting the temporal information in each triggering signal, obtains time signal in multiple station.
Collecting unit 10 can also comprise the 3rd acquisition module and the second extraction module; wherein; 3rd acquisition module is same writes to each other with the time management unit device TMU of each transformer station; for gathering the telemetered signal (also claiming remote signals) of proterctive equipment in each transformer station; the telemetered signal of proterctive equipment is with markers; second extraction module, for extracting the temporal information in each telemetered signal, obtains time signal in multiple station.
Further, in receiving element 20 first receiver module, the second receiver module and the 3rd receiver module one of at least, wherein, first receiver module is for receiving the time reference signal from Beidou II satellite, second receiver module is for receiving the time reference signal from gps satellite, 3rd receiver module is for receiving wired time reference signal (that is, PTP temporal information) of the host computer from transformer station.
Wherein, if clock monitor device receives the time reference signal from Beidou II satellite by the first receiver module, and utilize this time reference signal as calibration basis, time signal in the station of transformer station is calibrated, there is the advantage that fail safe is high.
Further, alignment unit 40 mainly comprises the first calibration module, the second calibration module and the 3rd calibration module, and carrying out in calibration process to time signal in Target Station, clock monitor device can be calibrated by arbitrary calibration module,
Wherein, the first calibration module is used for driving layer to utilize time signal in time reference signal calibration target station at Ethernet, that is, in the mode that Ethernet drives layer to utilize timestamp to add a cover, provide the PTP message time reference signal that transmission and reception are arrived to PTP program.
Second calibration module is used for utilizing time signal in time reference signal calibration target station at data link layer MAC, namely, in the mode that data link layer MAC utilizes timestamp to add a cover, calibrate time signal in Target Station, this kind of calibrating mode has the high advantage of precision.
3rd calibration module is used for utilizing time signal in time reference signal calibration target station at physical layer PHY, that is, in the mode that physical layer PHY utilizes timestamp to add a cover, calibrate time signal in Target Station, the precision of this kind of calibrating mode is the highest.
The embodiment of the present invention additionally provides a kind of clock monitoring method of transformer station, the clock monitor device that this clock monitoring method can be provided by embodiment of the present invention foregoing performs, and the clock monitoring method provided the embodiment of the present invention below does concrete introduction:
Fig. 3 is the flow chart of the clock monitoring method of transformer station according to the embodiment of the present invention, and as shown in Figure 3, this clock monitoring method mainly comprises the steps that S302 is to step S308:
S302: the time signal gathering each transformer station, obtain time signal in multiple station, particularly, each transformer station comprises time synchronism apparatus in station, it is interior by time service device and time management unit device TMU stand, mainly through communicating with time management unit device TMU, gather the time signal of transformer station.
S304: receive time reference signal, particularly, this time reference signal can be the time reference signal from Beidou II satellite, also can be the time reference signal from gps satellite, it can also be the wired time reference signal of higher level (that is, PTP temporal information) from transformer station.
Whether S306: judge that in each station, whether time signal is consistent with time reference signal, that is, judge the time in each station represented by time signal is one by one identical with the time represented by time reference signal.
S308: utilize time signal in time reference signal calibration target station, wherein, in Target Station, time signal is time signal in the station inconsistent with time reference signal judged, namely, when judging that in the station determining which transformer station, time signal and time reference signal are inconsistent, in the station determining this transformer station, time signal is time signal in Target Station, and time signal in this Target Station is set to time reference signal.
By monitoring the time signal of each transformer station, judge and calibrate, achieve the clock of unified each transformer station of monitoring, to solve in prior art clock in electricity grid substation and be difficult to the problem be consistent, and then reach the effect ensureing clock consistency, improve clock accuracy.
Particularly, in embodiments of the present invention, can in the following ways in the time signal of either type to each transformer station gather:
Mode one: communicate with the time management unit device TMU of each transformer station, by time management unit device TMU, gather the time signal of time service device in each transformer station, obtain time signal in multiple station.
Mode two: communicate with the time management unit device TMU of each transformer station, by time management unit device TMU, gather event sequence recording system SOE(Sequence Of Event in each transformer station) triggering signal, and the temporal information in each triggering signal collected is extracted, obtain time signal in multiple station.
Mode three: communicate with the time management unit device TMU of each transformer station; by time management unit device TMU; gather the telemetered signal (also claiming remote signals) of proterctive equipment in each transformer station; the telemetered signal of proterctive equipment is with markers; and the temporal information in each telemetered signal collected is extracted, obtain time signal in multiple station.
Further, the source of time reference signal comprise following one of at least: the host computer of Beidou II satellite, gps satellite and transformer station, correspondingly, receive time reference signal comprise receive in following time signal one of at least: receive the time reference signal from Beidou II satellite, receive the time reference signal from gps satellite, receive the wired time reference signal (that is, PTP temporal information) from the host computer of transformer station.
To when time signal is calibrated in Target Station, a kind of time reference signal is adopted to calibrate.Wherein, if utilize the time reference signal from Beidou II satellite basic as calibration, time signal in the station of transformer station is calibrated, there is the advantage that fail safe is high.
Further, in embodiments of the present invention, can in the following ways in either type time signal in Target Station is calibrated:
Mode one: drive layer to utilize time signal in time reference signal calibration target station at Ethernet, that is, in the mode that Ethernet drives layer to utilize timestamp to add a cover, provide the PTP message time reference signal that transmission and reception are arrived to PTP program.
Mode two: utilize time signal in time reference signal calibration target station at data link layer MAC, that is, in the mode that data link layer MAC utilizes timestamp to add a cover, calibrate time signal in Target Station, and this kind of calibrating mode has the high advantage of precision.
Mode three: utilize time signal in time reference signal calibration target station at physical layer PHY, that is, in the mode that physical layer PHY utilizes timestamp to add a cover, calibrate time signal in Target Station, the precision of this kind of calibrating mode is the highest.
From above description, can find out, present invention achieves the clock of unified each transformer station of monitoring, to solve in prior art clock in electricity grid substation and be difficult to the problem be consistent, and then reach the effect ensureing clock consistency, improve clock accuracy.
It should be noted that, can perform in the computer system of such as one group of computer executable instructions in the step shown in the flow chart of accompanying drawing, and, although show logical order in flow charts, but in some cases, can be different from the step shown or described by order execution herein.
Obviously, those skilled in the art should be understood that, above-mentioned of the present invention each module or each step can realize with general calculation element, they can concentrate on single calculation element, or be distributed on network that multiple calculation element forms, alternatively, they can realize with the executable program code of calculation element, thus, they can be stored and be performed by calculation element in the storage device, or they are made into each integrated circuit modules respectively, or the multiple module in them or step are made into single integrated circuit module to realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (13)
1. a clock monitoring method for transformer station, is characterized in that, comprising:
Gather the time signal of each described transformer station, obtain time signal in multiple station;
Receive time reference signal;
Judge that in each described station, whether time signal is consistent with described time reference signal; And
Utilize time signal in described time reference signal calibration target station, wherein, in described Target Station, time signal is time signal in the described station inconsistent with described time reference signal judged.
2. clock monitoring method according to claim 1, is characterized in that, the time signal gathering each described transformer station comprises:
Gather the time signal of time service device in each described transformer station.
3. clock monitoring method according to claim 1, is characterized in that, the time signal gathering each described transformer station comprises:
Gather the triggering signal of event sequence recording system SOE in each described transformer station; And
Extract the temporal information in each described triggering signal, obtain time signal in multiple described station.
4. clock monitoring method according to claim 1, is characterized in that, the time signal gathering each described transformer station comprises:
Gather the telemetered signal of proterctive equipment in each described transformer station; And
Extract the temporal information in each described telemetered signal, obtain time signal in multiple described station.
5. clock monitoring method according to claim 1, is characterized in that, receives time reference signal and comprises:
Receive the described time reference signal from Beidou II satellite; And/or
Receive the described time reference signal from gps satellite.
6. clock monitoring method according to claim 1, is characterized in that, utilizes time signal in described time reference signal calibration target station to comprise:
Layer is driven to utilize time signal in described time reference signal calibration target station at Ethernet; Or
Time signal in described time reference signal calibration target station is utilized in data link layer; Or
Time signal in described time reference signal calibration target station is utilized in physical layer.
7. a clock monitor device for transformer station, is characterized in that, comprising:
Collecting unit, for gathering the time signal of each described transformer station, obtains time signal in multiple station;
Receiving element, for receiving time reference signal;
Judging unit, for judging that in each described station, whether time signal is consistent with described time reference signal; And
Alignment unit, for utilizing time signal in described time reference signal calibration target station, wherein, in described Target Station, time signal is time signal in the described station inconsistent with described time reference signal judged.
8. clock monitor device according to claim 7, is characterized in that, described collecting unit comprises:
First acquisition module, for gathering the time signal of time service device in each described transformer station.
9. clock monitor device according to claim 7, is characterized in that, described collecting unit comprises:
Second acquisition module, for gathering the triggering signal of event sequence recording system SOE in each described transformer station; And
First extraction module, for extracting the temporal information in each described triggering signal, obtains time signal in multiple described station.
10. clock monitor device according to claim 7, is characterized in that, described collecting unit comprises:
3rd acquisition module, for gathering the telemetered signal of proterctive equipment in each described transformer station; And
Second extraction module, for extracting the temporal information in each described telemetered signal, obtains time signal in multiple described station.
11. clock monitor devices according to claim 7, it is characterized in that, described receiving element comprises:
First receiver module, for receiving the described time reference signal from Beidou II satellite; And/or
Second receiver module, for receiving the described time reference signal from gps satellite.
12. clock monitor devices according to claim 7, it is characterized in that, described alignment unit comprises:
First calibration module, for driving layer to utilize time signal in described time reference signal calibration target station at Ethernet; Or
Second calibration module, for utilizing time signal in described time reference signal calibration target station in data link layer; Or
3rd calibration module, for utilizing time signal in described time reference signal calibration target station in physical layer.
The clock monitor system of 13. 1 kinds of transformer stations, is characterized in that, comprises the clock monitor device of the transformer station according to any one of claim 7 to 12.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310713816.4A CN104734338A (en) | 2013-12-20 | 2013-12-20 | Clock monitoring method, device and system of transformer substations |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310713816.4A CN104734338A (en) | 2013-12-20 | 2013-12-20 | Clock monitoring method, device and system of transformer substations |
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| CN104734338A true CN104734338A (en) | 2015-06-24 |
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| CN201310713816.4A Pending CN104734338A (en) | 2013-12-20 | 2013-12-20 | Clock monitoring method, device and system of transformer substations |
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| CN105388751A (en) * | 2015-11-26 | 2016-03-09 | 株洲南车时代电气股份有限公司 | Method and system used for preventing clock jump in motor train unit |
| CN105824233A (en) * | 2016-06-02 | 2016-08-03 | 南京林洋电力科技有限公司 | Initiative time service module based on Beidou/GPS and ammeter initiative time service method |
| CN106569404A (en) * | 2016-11-01 | 2017-04-19 | 国电南瑞科技股份有限公司 | Secondary device clock out-of-step online monitoring system and secondary device clock out-of-step online monitoring method |
| CN109613818A (en) * | 2018-12-29 | 2019-04-12 | 广西电网有限责任公司南宁供电局 | Time service method and system, storage medium and electronic equipment based on big-dipper satellite |
| CN114384787A (en) * | 2021-11-29 | 2022-04-22 | 国网北京市电力公司 | Calibration method and device for electric energy meter clock |
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| CN109613818A (en) * | 2018-12-29 | 2019-04-12 | 广西电网有限责任公司南宁供电局 | Time service method and system, storage medium and electronic equipment based on big-dipper satellite |
| CN114384787A (en) * | 2021-11-29 | 2022-04-22 | 国网北京市电力公司 | Calibration method and device for electric energy meter clock |
| CN114384787B (en) * | 2021-11-29 | 2024-01-23 | 国网北京市电力公司 | Method and device for calibrating clock of electric energy meter |
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