CN106921458A - Intelligent substation SV sampling step-out monitoring methods based on SV messages - Google Patents
Intelligent substation SV sampling step-out monitoring methods based on SV messages Download PDFInfo
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- CN106921458A CN106921458A CN201710051853.1A CN201710051853A CN106921458A CN 106921458 A CN106921458 A CN 106921458A CN 201710051853 A CN201710051853 A CN 201710051853A CN 106921458 A CN106921458 A CN 106921458A
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- sampling
- sampling step
- out monitoring
- intelligent substation
- messages
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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
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The present invention discloses a kind of intelligent substation SV sampling step-out monitoring methods based on SV messages, and step is as follows：1）The relevant configuration information of reading device；2）Sampled data is read, sync id is judged, sentenced once per frame；When sample-synchronous be designated false be judged as it is asynchronous, the SV links do not perform sampling step-out monitoring criterion, otherwise then carry out sampling step-out monitoring；3）When carrying out sampling step-out monitoring, to every group of sampling sequence number of SV links in the same second for the markers of the sampled point of N is compared.The above-mentioned intelligent substation SV sampling step-out monitoring methods based on SV messages; real-time diagnosis alarm is carried out to SV samplings step-out in intelligent substation; intelligent substation operation maintenance personnel thereby can in time find abnormal conditions of sampling, and reduce or even avoid that false protection or the serious consequence caused by tripping occur so as to take necessary measure.
Description
Technical field
The invention belongs to intelligent substation technical field, and in particular to a kind of intelligent substation SV samplings based on SV messages
Step-out monitoring method.
Background technology
Since 2010, the intelligent substation of each voltage class puts into operation in succession.With intelligent substation construction
Deeply, more old station carries out intellectualized reconstruction, and digital sample is being realized on the spot by routine transformer.By combining unit
Time synchronized is carried out to multi-path digital collection capacity and merges output to use for other equipment.
Intelligent substation master clock typically uses triones navigation system and global positioning system (GPS) conduct simultaneously at this stage
Clock source, and use master/backup clock redundancy of effort mode.Even so, satellite clock source often also suffers from ambient weather, barrier
Hindering thing and electromagnetic interference etc. influences, add clock on when internal system hardware or the influence such as link failure, it may appear that clock is lost
Become estranged abnormal saltus step the problems such as.
If when saltus step occurs in clock satellite-signal, or before synchronizing signal recovery, combining unit is in punctual state
In the case of, just very likely there is step-out, to protection in the disunity on to synchronous mark treatment and pulse per second (PPS) affirmation mechanism
Normal operation brings and has a strong impact on.
Intelligent substation merging unit is configured by interval, at present both at home and abroad for the analog quantity channel in interval, is closed
And unit has been achieved with the sample-synchronous in time series, but for the combining unit across compartment, but lack necessary prison
Survey means, can only could often find after false protection.
In view of this, the present inventor is studied this, specially develops a kind of intelligent substation SV based on SV messages
Thus sampling step-out monitoring method, this case produces.
The content of the invention
It is an object of the invention to provide a kind of intelligent substation SV sampling step-out monitoring methods based on SV messages, to solve
Different interval sampled data step-out causes to influence the problem of power system security reliability service.
In order to realize the above object the technical solution adopted in the present invention is：
A kind of intelligent substation SV sampling step-out monitoring methods based on SV messages, step is as follows：
（1）The relevant configuration information of reading device；
（2）Sampled data is read, sync id is judged, sentenced once per frame；It is judged as difference when sample-synchronous are designated false
Step, the SV links do not perform sampling step-out monitoring criterion, otherwise then carry out sampling step-out monitoring；
（3）When carrying out sampling step-out monitoring, to every group of sampling sequence number of SV links in the same second for the markers of the sampled point of N is carried out
Compare, the link identification max_SvAppid of record maximum time stamp value maxnsec and the sampled point, the minimum time stamp value of record
The link identification min_SvAppid of minnsec and the sampled point, if（maxnsec-minnsec）>2ms, then judge SV samplings
Step-out；
When two groups of SV links sampling step-outs are taken office in monitoring, that is, provide SV sampling step-out warning information and record link identification, while
Record correlation SV original sampling datas；
Preferably, the step（1）In relevant configuration information include sampling step-out monitoring criterion throw move back control word.
Intelligent substation SV sampling step-out monitoring methods based on SV messages of the present invention, it is uninterrupted to differentiate SV synchronizations
State, if criterion puts into, to every group of sync id for the SV sampled datas of true carry out step-out judgement.The method is to intelligent change
SV samplings step-out carries out real-time diagnosis alarm in power station, and intelligent substation operation maintenance personnel thereby can in time find abnormal feelings of sampling
Condition, reduces or even avoids that false protection or the serious consequence caused by tripping occur so as to take necessary measure.
The present invention is described in further detail below in conjunction with drawings and the specific embodiments.
Brief description of the drawings
Fig. 1 is the flow chart of the sampling step-out monitoring method of the present embodiment.
Specific embodiment
The flow chart of the intelligent substation SV sampling step-out monitoring methods of SV messages is based on for the present invention as shown in Figure 1, by
Figure understands, as follows the step of the method：
（1）Reading device relevant configuration information, relevant configuration information here includes that control word is moved back in sampling step-out monitoring criterion throwing
Deng the settable information of correlation；
（2）Read SV sampled datas and judge whether SV is synchronous, is calculated once per frame, when sample identification for false is judged as difference
Step, the SV links do not perform sampling step-out monitoring criterion, otherwise then carry out sampling step-out monitoring；
（3）If sampling step-out monitoring criterion input, when carrying out sampling step-out monitoring, only adopts to each SV link in the same second
The markers of the sampled point of sample serial number N is compared, the link identification max_ of record maximum time stamp value maxnsec and the sampled point
The link identification min_SvAppid of SvAppid, record minimum time stamp value minnsec and the sampled point.If（maxnsec-
minnsec）>2ms, then judge SV sampling step-outs.
Wherein, the same second refer to sampling markers absolute time date Hour Minute Second all same, for example：Sampled data when be marked on
2016-04-28 10:39:20.000000~2016-04-28 10:39:It is considered between 20.999999 in the same second.
As long as in addition, when two groups of SV links sampling step-outs are taken office in monitoring, that is, providing SV sampling step-out warning information and recording
Link information, while recording correlation SV original sampling datas.
The above-mentioned intelligent substation SV sampling step-out monitoring methods based on SV messages, it is uninterrupted to differentiate SV synchronous regimes, if
Criterion puts into, then to every group of sync id for the SV sampled datas of true carry out step-out judgement.The method is in intelligent substation
SV samplings step-out carries out real-time diagnosis alarm, and intelligent substation operation maintenance personnel thereby can in time find abnormal conditions of sampling, so that
Take necessary measure and false protection or the serious consequence caused by tripping occur to reduce or even avoid.
Above-described embodiment and schema and non-limiting product form of the invention and style, any art it is common
Appropriate change or modification that technical staff is done to it, all should be regarded as not departing from patent category of the invention.
Claims (2)
1. it is a kind of based on SV messages intelligent substation SV sampling step-out monitoring method, it is characterised in that step is as follows：
（1）The relevant configuration information of reading device；
（2）Sampled data is read, sync id is judged, sentenced once per frame；It is judged as difference when sample-synchronous are designated false
Step, the SV links do not perform sampling step-out monitoring criterion, otherwise then carry out sampling step-out monitoring；
（3）When carrying out sampling step-out monitoring, to every group of sampling sequence number of SV links in the same second for the markers of the sampled point of N is carried out
Compare, the link identification max_SvAppid of record maximum time stamp value maxnsec and the sampled point, the minimum time stamp value of record
The link identification min_SvAppid of minnsec and the sampled point, if（maxnsec-minnsec）>2ms, then judge SV samplings
Step-out；
When two groups of SV links sampling step-outs are taken office in monitoring, that is, provide SV sampling step-out warning information and record link identification, while
Record correlation SV original sampling datas.
2. a kind of intelligent substation SV sampling step-out monitoring methods based on SV messages as claimed in claim 1, its feature exists
In the step（1）In relevant configuration information include sampling step-out monitoring criterion throw move back control word.
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| CN201710051853.1A CN106921458A (en) | 2017-01-21 | 2017-01-21 | Intelligent substation SV sampling step-out monitoring methods based on SV messages |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395306A (en) * | 2017-07-06 | 2017-11-24 | 中国南方电网有限责任公司 | A kind of network samples data syn-chronization method of discrimination based on temporal quality |
| CN114089038A (en) * | 2021-11-16 | 2022-02-25 | 许昌许继软件技术有限公司 | Time scale second-bit jump processing method and system for dynamic data of synchrophasor measuring device |
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| CN103236893A (en) * | 2013-03-22 | 2013-08-07 | 南京南瑞继保电气有限公司 | Network message synchronizing method for process levels of intelligent substation |
| CN104297593A (en) * | 2014-10-13 | 2015-01-21 | 国家电网公司 | Punctuality error detection method for intelligent substation merging unit |
| CN104333426A (en) * | 2014-09-25 | 2015-02-04 | 国电南瑞科技股份有限公司 | Pulse per second synchronization method based on merging unit SV message sampling sequence number learning |
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2017
- 2017-01-21 CN CN201710051853.1A patent/CN106921458A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103236893A (en) * | 2013-03-22 | 2013-08-07 | 南京南瑞继保电气有限公司 | Network message synchronizing method for process levels of intelligent substation |
| CN104333426A (en) * | 2014-09-25 | 2015-02-04 | 国电南瑞科技股份有限公司 | Pulse per second synchronization method based on merging unit SV message sampling sequence number learning |
| CN104297593A (en) * | 2014-10-13 | 2015-01-21 | 国家电网公司 | Punctuality error detection method for intelligent substation merging unit |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395306A (en) * | 2017-07-06 | 2017-11-24 | 中国南方电网有限责任公司 | A kind of network samples data syn-chronization method of discrimination based on temporal quality |
| CN107395306B (en) * | 2017-07-06 | 2019-06-21 | 中国南方电网有限责任公司 | A kind of network samples data synchronization method of discrimination based on temporal quality |
| CN114089038A (en) * | 2021-11-16 | 2022-02-25 | 许昌许继软件技术有限公司 | Time scale second-bit jump processing method and system for dynamic data of synchrophasor measuring device |
| CN114089038B (en) * | 2021-11-16 | 2024-04-16 | 许昌许继软件技术有限公司 | Time scale second bit jump processing method and system for dynamic data of synchronous phasor measurement device |
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