CN109150887A - A kind of power matching network ground elapsed time synchronous method and system - Google Patents
A kind of power matching network ground elapsed time synchronous method and system Download PDFInfo
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- CN109150887A CN109150887A CN201811015343.XA CN201811015343A CN109150887A CN 109150887 A CN109150887 A CN 109150887A CN 201811015343 A CN201811015343 A CN 201811015343A CN 109150887 A CN109150887 A CN 109150887A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
- H04L69/28—Timers or timing mechanisms used in protocols
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
- H04L67/01—Protocols
- H04L67/12—Protocols specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks
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Abstract
The invention discloses a kind of power matching network ground elapsed time synchronous method and system, this method includes according to clock source as clock place acquisition time synchronization signal；It is power port B code interface by the time mouthful outside the clock source BITs；According to the time synchronizing signal and the power port B code interface, realize that power matching network ground elapsed time is synchronous.This method can be using PTN product form as the transmission device of IPization, support PTP 1588v2 time synchronization international standard, pass through wire communication, split-second precision source is introduced from the equipment for being located at higher network level, it is end-to-end that temporal information is passed into power matching network secondary terminals, realize the time synchronization of power matching network secondary terminals.It solves the problems, such as to dispose mass GPS or Beidou in access layer, whole net only need to dispose active and standby time source in higher network level, and timing tracking accuracy is end-to-end to reach+- 1.5us, much meets the timing tracking accuracy requirement of power matching network.
Description
Technical field
The present invention relates to field of power communication, and in particular to a kind of power matching network ground elapsed time synchronous method and system.
Background technique
Power transmission and transformation grid company substation's business is the route protection of representative because of its working mechanism using optical fiber differential protective
Particularity proposes time synchronization requirement to communication network.
Optical fiber differential protective is also known as longitudinal differential protection, is one kind by means of circuit optical fiber channel, passes in real time to opposite side
Sampled data is passed, while receiving the sampled data of opposite side, each side Sustainable use is local differential by mutually carrying out with opposite side current data
Electric current calculates, and is differentiated according to the braking characteristic equation of current differential protection, is judged to movement tripping when troubles inside the sample space, is judged to area
The relay protection being failure to actuate is protected when outer failure.
Differential protection advantage is distinct, with the development of fiber optic communication, it has also become the protection of high-tension line mainstream.
1. the differential principle based on Kirchhoff's current law (KCL) has natural selectivity, prevent from acting outside area, Yi Miankuo
Major break down range；
2. poor stream is quick on the draw, differential protection movement is simple, reliable, quick；
3. split-phase calculates difference stream, it does not interfere with each other between phase and phase, there is natural phase-selecting function, is overhauled convenient for electric system
Route is separate；
4. not influenced by power system oscillation, no matter how system shakes when non-faulting, flows in and out equal always, keeps away
Exempt from malfunction；
5. not influenced by open-phase operation (phase-deficient operation), split-phase is differential to be made not to be associated between phase and phase.
It needs to receive and dispatch both ends in principle to be compared in the current sampling data of synchronization, otherwise can cause to calculate error,
Even malfunction.1.8 ° of phase angle sampling errors between the corresponding transmitting-receiving both ends of the time precision of 100us.
Currently, the existing time synchronization of electricity substation introduces time source GPS from the sky using website or Beidou is realized, but
Often website constructional difficulties, need feeder line it is through walls go out family；Power matching network magnanimity accesses scene, construction cost, project installation, dimension
All there is very big cost in shield, actual deployment is unrealistic.
Therefore, the protection field that optical fiber differential protective technology is extended to electric intelligent distribution, how to power matching network
Secondary terminals realize time synchronization, are urgent problems to be solved of the same trade.
Summary of the invention
In view of the above problems, the present invention provides a kind of miniaturization technical grade PTN communication system, and power matching network communication can be improved
Intelligence, accomplish can to tie up it is controllable, easily tie up easy-to-use, strong graphically managing, reach technical grade, light-weighted effect.
In a first aspect, the present invention provides a kind of power matching network ground elapsed time synchronous method, comprising:
According to clock source as clock place acquisition time synchronization signal；
It is power port B code interface by the time mouthful outside the clock source BITs；
According to the time synchronizing signal and the power port B code interface, realize that power matching network ground elapsed time is synchronous.
Further, the clock source is synchronous ethernet interface, external definition interface or 1588v2 time synchronization interface.
Second invention, the present invention also provides a kind of power matching network ground elapsed time synchronization systems, comprising: central station, master clock
Source, secondary clock source, the first PTP interconnecting device, the 2nd PTP interconnecting device, BITS equipment and relay protection device；
The central station controls the master clock source and time clock source by IP network；
The master clock source passes through SDH network communication and described time after the first PTP interconnecting device converts signal
Clock source is in communication with each other；
The BITS equipment is connect with the master clock source and time clock source respectively as frequency reference source；
The relay protection device is connect by B code interface with the master clock source and time clock source；
The master clock source and the secondary clock source respectively include: obtain module, power port B code interface and synchronization module；
The acquisition module is used for according to clock source as clock place acquisition time synchronization signal；
The clock source BITs outer time mouthful is power port B code interface；
The synchronization module is used for according to the time synchronizing signal and the power port B code interface, with realizing power matching network
Face time synchronization.
Further, the clock source is synchronous ethernet interface, external definition interface or 1588v2 time synchronization interface.
Compared with prior art, the beneficial effect of the embodiment of the present invention includes: that PTN product form is set as the transmission of IPization
It is standby, it supports PTP 1588v2 time synchronization international standard, can be introduced by wire communication from the equipment for being located at higher network level
Split-second precision source, it is end-to-end that temporal information is passed into power matching network secondary terminals, realize the time of power matching network secondary terminals
Synchronous, timing tracking accuracy is end-to-end to reach+- 1.5us, much meets the timing tracking accuracy requirement of power matching network.
Other features and advantages of the present invention will be illustrated in the following description, also, partial becomes from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention can be by written explanation
Specifically noted structure is achieved and obtained in book, claims and attached drawing.
Below by drawings and examples, technical scheme of the present invention will be described in further detail.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is a kind of flow chart of power matching network ground elapsed time synchronous method provided in an embodiment of the present invention；
Fig. 2 is a kind of block diagram of power matching network ground elapsed time synchronization system provided in an embodiment of the present invention；
Fig. 3 is the block diagram of synchronization module provided in an embodiment of the present invention.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Shown in referring to Fig.1, a kind of power matching network ground elapsed time synchronous method provided by the invention, comprising:
S101, according to clock source as clock place acquisition time synchronization signal；
It S102, by time mouthful outside the clock source BITs is power port B code interface；
S103, according to the time synchronizing signal and the power port B code interface, realize that power matching network ground elapsed time is synchronous.
In above-mentioned steps S101, clock source is synchronous ethernet interface, external definition interface or 1588v2 time synchronization
Interface.
Power matching network ground elapsed time synchronous method provided by the invention, using PTN product form as the transmission device of IPization,
It supports PTP 1588v2 time synchronization international standard, by wire communication, is introduced from the equipment for being located at higher network level high-precision
Time source is spent, it is end-to-end that temporal information is passed into power matching network secondary terminals, realize the time synchronization of power matching network secondary terminals.
It solving the problems, such as to dispose mass GPS or Beidou in access layer, whole net only need to dispose active and standby time source in higher network level, when
Between synchronization accuracy is end-to-end reaches+- 1.5us, much meet the timing tracking accuracy requirement of power matching network.
Second aspect, the present invention also provides power matching network ground elapsed time synchronization systems, referring to shown in Fig. 2, central station, master
Clock source, secondary clock source, the first PTP interconnecting device, the 2nd PTP interconnecting device, BITS equipment and relay protection device；
The central station controls the master clock source and time clock source by IP network；
The master clock source passes through SDH network communication and described time after the first PTP interconnecting device converts signal
Clock source is in communication with each other；
The BITS equipment is connect with the master clock source and time clock source respectively as frequency reference source；
The relay protection device is connect by B code interface with the master clock source and time clock source；
The master clock source and the secondary clock source, respectively include: obtain module, power port B code interface and synchronization module；
The acquisition module is used for according to clock source as clock place acquisition time synchronization signal；Clock source be it is synchronous with
Too network interface, external definition interface or 1588v2 time synchronization interface.
The clock source BITs outer time mouthful is power port B code interface；
The synchronization module is used for according to the time synchronizing signal and the power port B code interface, with realizing power matching network
Face time synchronization.
Wherein: system provided by the invention, wherein synchronization module, referring to shown in Fig. 3, can support any clock source as when
Zhong Su, optional clock source include synchronous ethernet interface, external definition interface, 1588v2 time synchronization interface.Operating mode packet
It includes, tracks, keeps, free oscillation.Lossless clock source is supported to switch.
Electric power 220kV and the above substation at present, the outer time mouth of clock source BITs generally be that (lamp is bright right for optical port B code
High level is answered, low corresponding bottom level, the jump correspondence for turning bright is prolonged on time by going out, using IRIG-B000 format).IR1G-B code symbol
The regulation of IRIG Standard 200-04 is closed, and containing time and time signal quality information (referring to IEEE C 37.118-
2005).But outer time optical port B code is changed to power port B under the scene of distribution magnanimity access in power port by optical port high failure rate
Code improves the reliability of outer time mouthful.
Therefore, the present invention avoids access point magnanimity deployment GPS or north in distribution by the Time synchronization technique of wire communication
Struggle against time source, realizes the time synchronization of electric intelligent terminal room, is the more efficient protection of power matching network and more accurate electric power mould
Quasi- parameter detecting provides may.Communication equipment PTN goes out the outer time B code of power port, also improves port reliability.
That is: in power matching network by wire communication PTN product form, when realizing the ground of distribution magnanimity Power Secondary terminal
Between it is synchronous.While meeting distribution intelligentized time synchronization demand, and avoid the high construction of magnanimity access terminal deployment GPS
Investment and high maintenance investment.
The outer time mouthful of communication equipment is transformed, out power port B code in the scene for adapting to industry.Realize communication equipment and electric power two
The direct outer time mouthful docking of secondary terminal, reduces the risk that docking is realized.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art
Mind and range.In this way, if these modifications and changes of the present invention belongs to the range of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to include these modifications and variations.
Claims (4)
1. a kind of power matching network ground elapsed time synchronous method characterized by comprising
According to clock source as clock place acquisition time synchronization signal；
It is power port B code interface by the time mouthful outside the clock source BITs；
According to the time synchronizing signal and the power port B code interface, realize that power matching network ground elapsed time is synchronous.
2. a kind of power matching network ground elapsed time synchronous method as described in claim 1, which is characterized in that the clock source is same
Walk Ethernet interface, external definition interface or 1588v2 time synchronization interface.
3. a kind of power matching network ground elapsed time synchronization system characterized by comprising central station, master clock source, secondary clock source,
First PTP interconnecting device, the 2nd PTP interconnecting device, BITS equipment and relay protection device；
The central station controls the master clock source and time clock source by IP network；
The master clock source passes through SDH network communication and the secondary clock after the first PTP interconnecting device converts signal
Source is in communication with each other；
The BITS equipment is connect with the master clock source and time clock source respectively as frequency reference source；
The relay protection device is connect by B code interface with the master clock source and time clock source；
The master clock source and the secondary clock source respectively include: obtain module, power port B code interface and synchronization module；
The acquisition module is used for according to clock source as clock place acquisition time synchronization signal；
The clock source BITs outer time mouthful is power port B code interface；
The synchronization module is used for according to the time synchronizing signal and the power port B code interface, when realizing power matching network ground
Between it is synchronous.
4. such as a kind of power matching network ground elapsed time synchronization system of claim 3, which is characterized in that the clock source is synchronous ether
Network interface, external definition interface or 1588v2 time synchronization interface.
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| CN201811015343.XA CN109150887A (en) | 2018-08-31 | 2018-08-31 | A kind of power matching network ground elapsed time synchronous method and system |
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| CN201811015343.XA CN109150887A (en) | 2018-08-31 | 2018-08-31 | A kind of power matching network ground elapsed time synchronous method and system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113113921A (en) * | 2021-04-08 | 2021-07-13 | 国网河北省电力有限公司沧州供电分公司 | MMC-HVDC-based offshore shore power flexible-direct system frequency fluctuation suppression device and method |
| 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 |
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