CN106230537B - A kind of method of data synchronization and device of intelligent substation - Google Patents
A kind of method of data synchronization and device of intelligent substation Download PDFInfo
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- CN106230537B CN106230537B CN201610569101.XA CN201610569101A CN106230537B CN 106230537 B CN106230537 B CN 106230537B CN 201610569101 A CN201610569101 A CN 201610569101A CN 106230537 B CN106230537 B CN 106230537B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J3/00—Time-division multiplex systems
- H04J3/02—Details
- H04J3/06—Synchronising arrangements
- H04J3/0635—Clock or time synchronisation in a network
- H04J3/0685—Clock or time synchronisation in a node; Intranode synchronisation
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Abstract
The invention discloses a kind of method of data synchronization of intelligent substation and devices, wherein the described method includes: obtaining the message collection of intelligent substation, and concentrates from the message of acquisition and extracts feature message；Determine the transmission exchange delay generated when the feature message transmits in the intelligent substation；Determine the transmission line delay generated when the feature message transmits between different intelligent substation；The transmission is exchanged into delay and transmission line delay mark in the preset field of the feature message；According to the delay marked in the preset field, the feature message is synchronized in the intelligent substation or between different intelligent substation.The method of data synchronization and device of a kind of intelligent substation provided by the invention can provide a kind of unified method of data synchronization between interior or station and station to stand in the case where not depending on external clock reference.
Description
Technical field
The present invention relates to data synchronization technology fields, and in particular to a kind of method of data synchronization and dress of intelligent substation
It sets.
Background technique
Currently, domestic each power grid provincial company is all provided with intelligent substation pilot, future, in the big back of smart grid construction
Under scape, the fast development of intelligent substation is inexorable trend, how more efficiently to utilize intelligent substation bring big data
Information is that the further development and application of intelligent substation technology will solve the problems, such as.
With the popularization, rapid development and application of intelligent substation, advantage of the intelligent substation relative to traditional substation
Gradually show, intelligent substation can provide data information more abundant and apply for analysis.However, for the further of data
Using intelligent substation at this stage exposes two comparison distinct issues:
1, data synchronize mainly in such a way that clock is synchronous in current substation, i.e., station equipment passes through access unification
Thus clock synchronization clock source guarantees that the data between distinct device are synchronous.Clock synchronisation source is mainly GPS etc. at this stage, but this
Mode depends on external clock source device unduly, once clock source breaks down, the data of station equipment just not can guarantee together
Step even results in and protects equipment failure in station.
2, due between different substation clock source device have nothing in common with each other, and data inside each substation are synchronous often
It is synchronous that the data for relying on respective clock source, therefore standing between station due to clock source disunity not can guarantee data more.
In addition, often being generated different when substation data in substation or between substation when being transmitted
Transmission delay.And the method that substation data is synchronized by clock source in the prior art, it can not prolong to transmission is generated
When data synchronize.
By upper analysis it is found that all having no idea to find a suitable reliably data in no matter standing or between station and station same
Step mode, therefore while further applying to intelligent substation data, just faces very big constraint.Therefore it provides a kind of effective
Intelligent substation in or intelligent substation between the data method of synchronization be further to solve the application of intelligent substation big data
It is crucial.
It should be noted that the above description of the technical background be intended merely to it is convenient to the technical solution of the application carry out it is clear,
Complete explanation, and facilitate the understanding of those skilled in the art and illustrate.Cannot merely because these schemes the application's
Background technology part is expounded and thinks that above-mentioned technical proposal is known to those skilled in the art.
Summary of the invention
The purpose of the present invention is to provide a kind of method of data synchronization of intelligent substation and devices, can be outside not depending on
In the case where portion's clock source, a kind of unified method of data synchronization is provided between interior or station and station to stand.
To achieve the above object, one aspect of the present invention provides a kind of method of data synchronization of intelligent substation, the method
It include: to obtain the message collection of intelligent substation, and concentrate from the message of acquisition and extract feature message；Determine the feature report
The transmission that text generates when transmitting in the intelligent substation exchanges delay；Determine the feature message in different intelligent substation
Between transmit when generate transmission line delay；The transmission is exchanged into delay and transmission line delay mark in described
In the preset field of feature message；According to the delay marked in the preset field, the feature message is become in the intelligence
It is synchronized in power station or between different intelligent substation.
To achieve the above object, another aspect of the present invention also provides a kind of data synchronization unit of intelligent substation, described
Device includes: feature message extraction unit, is mentioned for obtaining the message collection of intelligent substation, and from the message of acquisition concentration
Take feature message；Transmission exchange delay determination unit, when for determining that the feature message transmits in the intelligent substation
The transmission of generation exchanges delay；Transmission line delay determination unit, determines the feature message between different intelligent substation
The transmission line delay generated when transmission；Unit is marked, for the transmission to be exchanged delay and transmission line delay
It marks in the preset field of the feature message；Synchronization unit, for according to the delay marked in the preset field, by institute
Feature message is stated to synchronize in the intelligent substation or between different intelligent substation.
Therefore the method for data synchronization and device of a kind of intelligent substation provided by the invention, determining intelligence
After feature message in substation, Time delay measurement can be carried out to feature message.The delay of measurement not only covers intelligent substation
Interior exchange delay, the transmission delay also comprising route between different intelligent substation.The data method of synchronization in the present invention is not
Data have simultaneously provided a kind of new method in only standing, and also the data further between intelligent substation have simultaneously provided one kind
Effective solution, to improve to the validity that intelligent substation data utilize in region, convenient for the system of information
One utilization and management, reduce the operation and maintenance intensity of intelligent station.
Referring to following description and accompanying drawings, specific implementations of the present application are disclosed in detail, specify the original of the application
Reason can be in a manner of adopted.It should be understood that presently filed embodiment is not so limited in range.In appended power
In the range of the spirit and terms that benefit requires, presently filed embodiment includes many changes, modifications and is equal.
The feature for describing and/or showing for a kind of embodiment can be in a manner of same or similar one or more
It uses in a other embodiment, is combined with the feature in other embodiment, or the feature in substitution other embodiment.
It should be emphasized that term "comprises/comprising" refers to the presence of feature, one integral piece, step or component when using herein, but simultaneously
It is not excluded for the presence or additional of one or more other features, one integral piece, step or component.
Detailed description of the invention
Fig. 1 is a kind of flow chart of the method for data synchronization for intelligent substation that the application embodiment provides；
Fig. 2 is a kind of functional block diagram of the data synchronization unit for intelligent substation that the application embodiment provides.
Specific embodiment
In order to make those skilled in the art better understand the technical solutions in the application, below in conjunction with the application reality
The attached drawing in mode is applied, the technical solution in the application embodiment is clearly and completely described, it is clear that described
Embodiment is only a part of embodiment of the application, rather than whole embodiments.Based on the embodiment party in the application
Formula, all other embodiment obtained by those of ordinary skill in the art without making creative efforts, is all answered
When the range for belonging to the application protection.
The application embodiment provides a kind of method of data synchronization of intelligent substation.Referring to Fig. 1, the method includes
Following steps.
Step S1: the message collection of intelligent substation is obtained, and is concentrated from the message of acquisition and extracts feature message.
In the present embodiment, the data in the intelligent substation can follow IEC61850 standard, IEC61850 mark
It will definitely be the communication system of intelligent substation be divided into 3 layers: substation level, wall and process layer.Wherein, in substation
Network between layer and wall is mapped to manufacture message specification, transmission control protocol/internet using Abstract Common Service Interface
Agreement Ethernet or optical network.Network between wall and process layer uses one-way transmission Ethernet of the single-point to multiple spot.
Electronic equipment in intelligent substation can carry out information exchange by network using unified agreement.
In the present embodiment, the message in IEC61850 standard may include sampling value message, towards general object
Transformer substation case message, time synchronization message, the ACSI service message of core and general substation state event message etc..Its
In, the sampling value message can be indicated with SV, and the transformer substation case message towards general object can use GOOSE table
Show.
In the present embodiment, the sampling value message and the transformer substation case towards general object can be directed to
Message is synchronous to carry out data.Specifically, the message collection of available intelligent substation, and mentioned from the message of acquisition concentration
Feature message is taken, the feature message can be the sampling value message and the transformer substation case report towards general object
Text.
In the present embodiment, different types of message can often correspond to different Ethernet protocol types.For example, institute
Stating the corresponding Ethernet protocol type of sampling value message can be 0X88BA, and the transformer substation case report towards general object
The corresponding Ethernet protocol type of text can be 0X88B8.Based on this, in the present embodiment, in order to be mentioned from message concentration
Take out the sampling value message and the transformer substation case message towards general object, it may be predetermined that target protocol class
Type.The target protocol type can be 0X88BA and 0X88B8.In this way, the message concentration that can be will acquire meets institute
The message for stating target protocol type is determined as the feature message.
Step S2: the transmission exchange delay generated when the feature message transmits in the intelligent substation is determined.
In the present embodiment, the feature message can transmit in intelligent substation, can also be in different intelligence
It is transmitted between substation.It may include the interchanger of preset quantity in the intelligent substation, in order to determine the feature message
The transmission exchange delay generated when transmitting in the intelligent substation, can determine the feature message in each exchange respectively
The delay generated when being transmitted at machine.
Specifically, when the default interchanger in the feature message transmissions to the intelligent substation, can recorde into
Enter the initial time stamp of the default interchanger.When the feature message forwards outward from the default interchanger, Ke Yiji
The termination timestamp of the default interchanger is left in record.So, it is described terminate between timestamp and the initial time stamp when
Between difference can delay to be generated when being transmitted at the default interchanger for the feature message.
In this way, corresponding transmission delay is determined at each interchanger that the feature message passes through, so as to incite somebody to action
The delay summation that the feature message generates when transmitting at respective switch is determined as the feature message and becomes in the intelligence
The transmission exchange delay generated when being transmitted in power station.
Step S3: the transmission line delay generated when the feature message transmits between different intelligent substation is determined.
In the present embodiment, the feature message, can also be not in addition to that can be transmitted in intelligent substation
It is transmitted between same intelligent substation.In this way, when route of the feature message between different intelligent substation uploads
When defeated, transmission line delay can be correspondingly generated.In the present embodiment, when the intelligent substation turns the feature message
When being sent to Intelligent target substation, the corresponding first time stamp of the forwarding feature message can recorde.When the Intelligent target
When substation receives the feature message, acknowledgement message can be returned to the intelligent substation immediately.The intelligence power transformation
After station receives the acknowledgement message, it can recorde and receive corresponding second timestamp of the acknowledgement message.In this way, from described
Intelligent substation forwards the feature start of heading, and to the acknowledgement the message ends are received, message is in the intelligent substation
Round-trip transmission process is completed on route between the Intelligent target substation, it therefore, in the present embodiment can be with
It determines and is produced when the feature message transmits between the intelligent substation and the Intelligent target substation according to the following equation
Raw transmission line delay:
Tl=(t2-t1)/2
Wherein, TlIndicate the transmission line delay, t2Indicate second timestamp, t1Indicate the first time stamp.
In the present embodiment, in order to guarantee measurement the transmission exchange delay and the transmission line delay it is accurate
Property, measurement result can be compared with standard delay, to examine the reasonability of measurement result.Specifically, institute can be determined
State the first error between transmission exchange delay and the delay of the first standard, wherein the first standard delay is become by the intelligence
The standard delay parameter of respective switch determines in power station.For example, respective switch before factory, can be surveyed by delay
Examination, and the parameter obtained after delay test can be used as the standard delay parameter.The standard delay parameter can reflect
The time that message should expend when transmitting in the interchanger.In this way, passing through each exchange for passing through the feature message
The standard delay of machine adds up, and can obtain the first standard delay.During actual transmissions, true measurement knot
Often there is inevitable error in fruit and standard delay, as long as and the error can think measurement result within the allowable range
It is reasonable.
Likewise, the second error between the transmission line delay and the delay of the second standard can be determined, wherein described
The delay of second standard is determined by the line length between different intelligent substation.Line length is often directly proportional to transmission delay,
Therefore the second standard delay can be determined according to the line length between different intelligent substation.
In the present embodiment, when at least one of the first error and second error are greater than default error threshold
When value, Delayed Alarm information can be generated, to prompt current measurement result unreasonable.It can re-measure so described
The corresponding transmission exchange delay of feature message and transmission line delay.
Step S4: by the transmission exchange delay and transmission line delay mark in the default of the feature message
In field.
In the present embodiment, when in step S3 the first error and second error be respectively less than or be equal to institute
When stating default error threshold, the transmission can be exchanged to delay and transmission line delay mark in the feature message
Preset field in.The preset field can be the reserved field in the feature message, can distinguish in the preset field
Record the transmission exchange delay and transmission line delay that the feature message generates in transmission process.
Step S5: according to the delay marked in the preset field, by the feature message in the intelligent substation
Or it is synchronized between different intelligent substation.
In the present embodiment, when the feature message transmits in the intelligent substation, the delay generated is only
It is related to the interchanger in intelligent substation.It therefore can be according to the transmission exchange delay marked in the preset field, by institute
Feature message is stated to synchronize in the intelligent substation.Specifically synchronous method can be on the basis of current point in time
The time for retrodicting the transmission exchange delay forward, it may thereby determine that the start transmission time of this feature message, in order to incite somebody to action
Different feature messages are aligned in time.
And when the feature message transmits between different intelligent substation, generate delay not only with intelligent power transformation
Interchanger in standing is related, and also the route between different intelligent substation is related.It therefore, can be according in the preset field
The sum of the transmission exchange delay of mark and transmission line delay, the feature message are carried out between different intelligent substation same
Step.The specific method of synchronization is also possible to retrodict the transmission exchange delay and the biography forward on the basis of current point in time
The time of the sum of defeated circuit delay may thereby determine that the start transmission time of this feature message, in order to by different features
Message is aligned in time.
Therefore a kind of method of data synchronization of intelligent substation provided by the invention, determining intelligent substation
After interior feature message, Time delay measurement can be carried out to feature message.The delay of measurement not only covers the friendship in intelligent substation
Delay is changed, the transmission delay also comprising route between different intelligent substation.The data method of synchronization in the present invention is not only to stand
Interior data have simultaneously provided a kind of new method, and also the data further between intelligent substation have simultaneously provided a kind of having for row
The solution of effect, to improve to the validity that intelligent substation data utilize in region, unified convenient for information is utilized
With management, the operation and maintenance intensity of intelligent station is reduced.
The present invention also provides a kind of data synchronization units of intelligent substation.Referring to Fig. 2, the apparatus may include:
Feature message extraction unit 100 is concentrated for obtaining the message collection of intelligent substation, and from the message of acquisition
Extract feature message；
Transmission exchange delay determination unit 200, when for determining that the feature message transmits in the intelligent substation
The transmission of generation exchanges delay；
Transmission line delay determination unit 300, determines production when the feature message transmits between different intelligent substation
Raw transmission line delay；
Unit 400 is marked, for the transmission to be exchanged delay and transmission line delay mark in the feature
In the preset field of message；
Synchronization unit 500, for according to the delay marked in the preset field, by the feature message in the intelligence
It is synchronized in substation or between different intelligent substation.
In one preferred embodiment of the application, including the interchanger of preset quantity in the intelligent substation, correspondingly,
The transmission exchange delay determination unit 200 specifically includes:
Initial time stamp logging modle, for when the default exchange in the feature message transmissions to the intelligent substation
When machine, record enters the initial time stamp of the default interchanger；
Timestamp logging modle is terminated, for recording when the feature message forwards outward from the default interchanger
Leave the termination timestamp of the default interchanger；
Be delayed determining module, for the time difference between the termination timestamp and the initial time stamp to be determined as institute
State the delay generated when feature message transmits at the default interchanger；
Transmission exchange delay determining module, the delay generated when for transmitting the feature message at respective switch
Summation is determined as the transmission generated when the feature message transmits in the intelligent substation exchange delay.
In one preferred embodiment of the application, before the mark unit 400, described device further include:
First error determination unit 310, for determining first between the transmission exchange delay and the delay of the first standard
Error, the first standard delay are determined by the standard delay parameter of respective switch in the intelligent substation；
Second error determination unit 320, for determining second between the transmission line delay and the delay of the second standard
Error, the second standard delay are determined by the line length between different intelligent substation；
Delayed Alarm information generating unit 330, for working as at least one of the first error and second error
When greater than default error threshold, Delayed Alarm information is generated；
Correspondingly, the mark unit 400 is used to work as the first error and second error is respectively less than or is equal to
When the default error threshold, the transmission is just exchanged into delay and transmission line delay mark in the feature message
Preset field in.
It should be noted that each embodiment in this specification is described in a progressive manner, each embodiment party
Same and similar part may refer to each other between formula, what each embodiment stressed be with other embodiments not
Same place.For device embodiments, since it is substantially similar to method implementation, so the comparison of description
Simply, related place illustrates referring to the part of method implementation.
Therefore the method for data synchronization and device of a kind of intelligent substation provided by the invention, determining intelligence
After feature message in substation, Time delay measurement can be carried out to feature message.The delay of measurement not only covers intelligent substation
Interior exchange delay, the transmission delay also comprising route between different intelligent substation.The data method of synchronization in the present invention is not
Data have simultaneously provided a kind of new method in only standing, and also the data further between intelligent substation have simultaneously provided one kind
Effective solution, to improve to the validity that intelligent substation data utilize in region, convenient for the system of information
One utilization and management, reduce the operation and maintenance intensity of intelligent station.
Although above having used general explanation and specific embodiment, the present invention is described in detail, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
These modifications or improvements without departing from theon the basis of the spirit of the present invention are fallen within the scope of the claimed invention.
Claims (6)
1. a kind of method of data synchronization of intelligent substation, which is characterized in that the described method includes:
The message collection of intelligent substation is obtained, and is concentrated from the message of acquisition and extracts feature message；
Determine the transmission exchange delay generated when the feature message transmits in the intelligent substation；
Determine the transmission line delay generated when the feature message transmits between different intelligent substation；
The transmission is exchanged into delay and transmission line delay mark in the preset field of the feature message；
According to the delay marked in the preset field, by the feature message in the intelligent substation or in different intelligence
It can be synchronized between substation；
Wherein, the interchanger in the intelligent substation including preset quantity correspondingly determines the feature message in the intelligence
The transmission exchange delay generated when transmitting in energy substation specifically includes:
When the default interchanger in the feature message transmissions to the intelligent substation, record enters the default interchanger
Initial time stamp；
When the feature message forwards outward from the default interchanger, record leaves the termination time of the default interchanger
Stamp；
Time difference between the termination timestamp and the initial time stamp is determined as the feature message described default
The delay generated when being transmitted at interchanger；
The delay summation generated when the feature message is transmitted at respective switch is determined as the feature message described
The transmission exchange delay generated when transmission in intelligent substation；
Wherein, the transmission is being exchanged into delay and transmission line delay mark in the preset field of the feature message
In before, the method also includes:
Determine the first error between the transmission exchange delay and the delay of the first standard, the first standard delay is by the intelligence
The standard delay parameter of respective switch determines in energy substation；
Determine the second error between the transmission line delay and the delay of the second standard, the second standard delay is by different intelligence
Line length between energy substation determines；
When at least one of the first error and second error are greater than default error threshold, Delayed Alarm letter is generated
Breath；
Correspondingly, the transmission is exchanged into delay and transmission line delay mark in the preset field of the feature message
In specifically include:
When the first error and second error are respectively less than or are equal to the default error threshold, just by the transmission
Exchange delay and transmission line delay mark are in the preset field of the feature message.
2. the method according to claim 1, wherein concentrating extraction feature message specific from the message of acquisition
Include:
Predefine target protocol type；
The message that will acquire concentrates the message for meeting the target protocol type to be determined as the feature message.
3. method according to claim 1 or 2, which is characterized in that the feature message include sampling value message and towards
At least one of transformer substation case message of general object.
4. the method according to claim 1, wherein determining the feature message between different intelligent substation
The transmission line delay generated when transmission specifically includes:
When the feature message is forwarded to Intelligent target substation by the intelligent substation, record forwards the feature message
Corresponding first time stamp；
When the Intelligent target substation receives the feature message, acknowledgement message is returned to the intelligent substation；
The intelligent substation record receives corresponding second timestamp of the acknowledgement message；
Determine that the feature message transmits between the intelligent substation and the Intelligent target substation according to the following equation
When generate transmission line delay:
Tl=(t2-t1)/2
Wherein, TlIndicate the transmission line delay, t2Indicate second timestamp, t1Indicate the first time stamp.
5., will be described the method according to claim 1, wherein according to the delay marked in the preset field
Feature message is being synchronized in the intelligent substation or between different intelligent substation and is being specifically included:
According to the transmission exchange delay marked in the preset field, the feature message is carried out in the intelligent substation
It is synchronous；
According to the sum of the transmission exchange delay marked in the preset field and transmission line delay, by the feature message not
It is synchronized between intelligent substation.
6. a kind of data synchronization unit of intelligent substation, which is characterized in that described device includes:
Feature message extraction unit for obtaining the message collection of intelligent substation, and is concentrated from the message of acquisition and extracts spy
Levy message；
Transmission exchange delay determination unit, the biography generated when for determining that the feature message transmits in the intelligent substation
Defeated exchange delay；
Transmission line delay determination unit, determines the transmission generated when the feature message transmits between different intelligent substation
Circuit delay；
Unit is marked, for the transmission to be exchanged delay and transmission line delay mark in the pre- of the feature message
If in field；
Synchronization unit, for according to the delay marked in the preset field, by the feature message in the intelligent substation
It is interior or synchronized between different intelligent substation；
It wherein, include the interchanger of preset quantity in the intelligent substation, correspondingly, the transmission exchange delay determination unit
It specifically includes:
Initial time stamp logging modle, for when the default interchanger in the feature message transmissions to the intelligent substation
When, record enters the initial time stamp of the default interchanger；
Timestamp logging modle is terminated, for when the feature message forwards outward from the default interchanger, record to be left
The termination timestamp of the default interchanger；
Be delayed determining module, for the time difference between the termination timestamp and the initial time stamp to be determined as the spy
The delay that sign message generates when transmitting at the default interchanger；
Transmission exchange delay determining module, the delay summation generated when for transmitting the feature message at respective switch
It is determined as the transmission generated when the feature message transmits in the intelligent substation exchange delay；
Wherein, before the mark unit, described device further include:
First error determination unit, for determining the first error between the transmission exchange delay and the delay of the first standard, institute
The delay of the first standard is stated to be determined by the standard delay parameter of respective switch in the intelligent substation；
Second error determination unit, for determining the second error between the transmission line delay and the delay of the second standard, institute
The delay of the second standard is stated to be determined by the line length between different intelligent substation；
Delayed Alarm information generating unit, for being preset when at least one of the first error and second error are greater than
When error threshold, Delayed Alarm information is generated；
Correspondingly, the mark unit is used to be respectively less than or be equal to described preset when the first error and second error
When error threshold, the transmission is just exchanged into delay and transmission line delay mark in the predetermined word of the feature message
Duan Zhong.
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| CN108667686B (en) * | 2018-04-11 | 2021-10-22 | 国电南瑞科技股份有限公司 | Credibility evaluation method for network message time delay measurement |
| CN113341680B (en) * | 2021-06-30 | 2022-05-27 | 广东电网有限责任公司 | Time synchronization method and device for distribution Internet of things end device |
| CN115277498B (en) * | 2022-06-24 | 2023-06-13 | 珠海优特电力科技股份有限公司 | Timing method based on waveform parameters, related equipment, system and storage medium |
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| CN103236744A (en) * | 2013-05-07 | 2013-08-07 | 国家电网公司 | Intelligent transformer substation information optical fiber transmission delay detection method |
| CN103607267A (en) * | 2013-07-23 | 2014-02-26 | 王健 | End-to-end transmission delay carrying measurement method of data network message |
| CN105376115A (en) * | 2015-12-01 | 2016-03-02 | 北京博维亚讯技术有限公司 | Hardware-based sampling value clock transparent transmission device and method for mutual inductor of transformer substation |
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