CN101241635B - Trans-interval sampling method adopting centralized combiner - Google Patents
Trans-interval sampling method adopting centralized combiner Download PDFInfo
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- CN101241635B CN101241635B CN2008100244195A CN200810024419A CN101241635B CN 101241635 B CN101241635 B CN 101241635B CN 2008100244195 A CN2008100244195 A CN 2008100244195A CN 200810024419 A CN200810024419 A CN 200810024419A CN 101241635 B CN101241635 B CN 101241635B
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Abstract
The present invention relates to a span sampling method using centralized combiner. The method has characteristics in that: the input interface of the centralized combiner is compatible with point-to-point protocol prescribed by IEC61850-9-1 and IEC60044-8 electron type mutual inductor digital output interface protocol, the output interface uses point-to-point protocol prescribed by IEC61850-9-1; the centralized combiner receives span sampling synchronous clock signal, if sampling synchronous clock signal working normally, a hardware synchronous technique is used; if sampling synchronous clock signal inexistence or working abnormally, software synchronous technique based on PLL is used. The method can solve the problem of synchronous span sampling, and also can solve the problem that the hardware synchronous technique and the technique based on software PLL are redundant each other. The method increases system reliability greatly. The input/output ports of the centralized combiner using protocol prescribed by international general standard has better compatibility and flexible structure, and is used for many situations.
Description
Technical field
The present invention relates to a kind of data sampling method, specifically relate to a kind of trans-interval sampling method of concentrating combiner that adopts, belong to the power system automation technology field.
Background technology
At present, the engineering practice stage has been arrived in the application of digital transformer substation and electronic mutual inductor, manufacturer has all made number of research projects in the digital transformer substation field both at home and abroad, and electronic mutual inductor outputting standard and the monospace product that is based upon on this standard base all come out.Company such as ABB, Siemens in the world, domestic Xinning photoelectricity, Xi'an have all been released with the electronic mutual inductor product of companies such as dimension, and have corresponding second interface equipment.
In digital transformer substation system, sampling is carried out with the unit of being spaced apart.How the data that secondary devices such as the tranformer protection in the transformer station, bus protection, fault oscillograph need multi-compartment at this moment, realize that these interval sampling data synchronization just become current problem demanding prompt solution.
The digital transformer substation of sampled I EC 61850-9-2 agreement Network Based is technical also not to be realized, IEC61850-9-1 is the basis of existing digital transformer substation sampled data transmission, because IEC 61850-9-1 agreement is the point-to-point agreement of monospace multichannel, so stride the key that the exploitation of the concentrated combiner of interval sampling and the method for sampling has become digital transformer substation on this basis.
Summary of the invention
For solving the deficiencies in the prior art, the trans-interval sampling method of combiner is concentrated in the employing that the object of the present invention is to provide a kind of solution to stride the stationary problem of interval sampling.
For achieving the above object, the present invention is achieved by the following technical solutions:
A kind of trans-interval sampling method of concentrating combiner that adopts, it is characterized in that the concentrated combiner that adopted, the point-to-point protocol and the IEC60044-8 Electrical Instrument Transducers with Digital output interface agreement of its input interface compatible to IEC 61850-9-1 regulation, output interface adopts the point-to-point protocol of IEC61850-9-1 regulation; Concentrate combiner to receive and stride the interval sampling synchronizing clock signals,, then adopt the hardware synchronization technology if the sampling clock synchronizing signal is working properly; If the sampling clock synchronizing signal does not exist or operation irregularity, then adopt software synchronization technology based on phaselocked loop.Concentrated combiner possesses a plurality of inputs, with the input of a plurality of interval sampling data, carry out synchronous processing after, export again.
The trans-interval sampling method of combiner is concentrated in aforesaid employing, it is characterized in that striding the angular difference of interval sampling in 100ns (0.1 minute).
The trans-interval sampling method of combiner is concentrated in aforesaid employing, it is characterized in that described input, output interface all adopt the optical fiber form.
The trans-interval sampling method of combiner is concentrated in aforesaid employing, it is characterized in that described PHASE-LOCKED LOOP PLL TECHNIQUE, and implementation step is as follows:
(1) time of arrival of record interval data;
(2), adjust the corresponding timer of concentrating combiner according to the time of arrival of interval data;
(3) adopt the second-degree parabola interpolation algorithm, improve interpolation precision and frequency response characteristic;
(4), guarantee that linear phase, waveform are undistorted based on the FIR filtering algorithm of hamming code window.
The invention has the beneficial effects as follows: the present invention adopts and concentrates the sampled data of combiner reception from multi-compartment, and according to the Synchronization Status Message in the message, adopts different synchronized algorithms to guarantee the synchronous of output data.Have following characteristics:
1. hardware synchronization and software synchronization are redundant mutually, the reliability height;
2. software synchronization adopts PHASE-LOCKED LOOP PLL TECHNIQUE, and precision is high and do not rely on hardware synchronization, in hardware synchronization
Still can reliably working during fault;
3. hardware synchronization signal in can receiving station;
4. the angular difference of striding interval sampling is in 100ns (0.1 minute);
5. input, output interface all adopt the optical fiber form, the reliability height;
6. the iec60044-8 standard is adopted in input, and the iec61850-9-1 standard is adopted in output, and is compatible good.
7. structure is flexible, can the unit independent operating, and also can the plug-in unit mode be embedded in the secondary device and move
8. alleviate the burden of secondary device, improved its reliability, and reduced cost.
Description of drawings
Fig. 1 is a concentrated combiner block diagram of the present invention.
Embodiment
Below in conjunction with accompanying drawing the present invention is done concrete introduction.
Fig. 1 is a concentrated combiner block diagram of the present invention.As shown in the figure, each interval sampling data both can be the sampled data that satisfies the IEC60044-8 agreement among the figure, also can be the sampled data that satisfies IEC61850-9-1 regulation agreement, and the output data interface protocol is the regulation agreement of IEC61850-9-1.
That concentrates the combiner device to receive to satisfy the IEC60044-8 regulation strides the interval sampling synchronizing clock signals, if this signal is working properly, adopts the hardware synchronization technology.
If the synchronized sampling clock signal does not exist or operation irregularity, then adopt software synchronization technology based on phaselocked loop.The performing step of PHASE-LOCKED LOOP PLL TECHNIQUE is as follows:
1. note down the time of arrival of interval data;
2. according to the time of arrival of interval data, adjust the corresponding timer of concentrating combiner;
3. the second-degree parabola interpolation algorithm has improved interpolation precision and frequency response characteristic;
4. based on the FIR filtering algorithm of hamming code window, undistorted to guarantee linear phase, waveform.
Below announced the present invention with preferred embodiment, so it is not in order to restriction the present invention, and all technical schemes that scheme obtained of taking to be equal to replacement or equivalent transformation all drop in protection scope of the present invention.
Claims (4)
1. adopt the trans-interval sampling method of concentrating combiner, it is characterized in that the concentrated combiner that adopted, the point-to-point protocol and the IEC60044-8 Electrical Instrument Transducers with Digital output interface agreement of its input interface compatible to IEC 61850-9-1 regulation, output interface adopts the point-to-point protocol of IEC61850-9-1 regulation; Concentrate combiner to receive and stride the interval sampling synchronizing clock signals,, then adopt the hardware synchronization technology if the sampling clock synchronizing signal is working properly; If the sampling clock synchronizing signal does not exist or operation irregularity, then adopt software synchronization technology based on phaselocked loop.
2. the trans-interval sampling method of combiner is concentrated in employing according to claim 1, it is characterized in that striding the angular difference of interval sampling in 100ns.
3. the trans-interval sampling method of combiner is concentrated in employing according to claim 1, it is characterized in that described input, output interface all adopt the optical fiber form.
4. the trans-interval sampling method of combiner is concentrated in employing according to claim 1, it is characterized in that described PHASE-LOCKED LOOP PLL TECHNIQUE, and implementation step is as follows:
(1) time of arrival of logging interval data;
(2), adjust the corresponding timer of concentrating combiner according to the time of arrival of interval data;
(3) adopt the second-degree parabola interpolation algorithm, improve interpolation precision and frequency response characteristic;
(4), guarantee that linear phase, waveform are undistorted based on the FIR filtering algorithm of hamming code window.
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| CN2008100244195A CN101241635B (en) | 2008-03-21 | 2008-03-21 | Trans-interval sampling method adopting centralized combiner |
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| CN2008100244195A CN101241635B (en) | 2008-03-21 | 2008-03-21 | Trans-interval sampling method adopting centralized combiner |
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| CN101241635A CN101241635A (en) | 2008-08-13 |
| CN101241635B true CN101241635B (en) | 2011-06-08 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101707130B (en) * | 2009-11-10 | 2012-12-05 | 深圳市科陆电子科技股份有限公司 | Combined electronic transformer |
| CN102495313B (en) * | 2011-12-05 | 2013-08-07 | 山东电力研究院 | Testing method for synchronization performance of IEC61850-based digital measurement and control device |
| CN103986129B (en) * | 2014-05-30 | 2018-04-20 | 广西电网公司 | Bus bar protecting method based on voltage lock phase networking sampling |
| CN109946513B (en) * | 2019-03-26 | 2021-01-08 | 江苏凌创电气自动化股份有限公司 | Cross-interval digital metering method, device and system based on network sampling absolute delay compensation |
| CN110940855B (en) * | 2019-11-11 | 2022-07-15 | 国网安徽省电力有限公司电力科学研究院 | Electric energy metering method and device suitable for three-second wiring of intelligent substation |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5654698A (en) * | 1996-03-18 | 1997-08-05 | The United States Of America As Represented By The Secretary Of The Navy | Missile telemetry data interface circuit |
| CN1536538A (en) * | 2003-04-09 | 2004-10-13 | 百利通电子(上海)有限公司 | Multichannel remote control device |
| CN1536882A (en) * | 2003-04-10 | 2004-10-13 | �Ҵ���˾ | Method for providing hardware component acdess whose data value group is not limited, its system and synchronous circuit |
| CN1862970A (en) * | 2005-05-11 | 2006-11-15 | 松下电器产业株式会社 | Audio decoding device |
-
2008
- 2008-03-21 CN CN2008100244195A patent/CN101241635B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5654698A (en) * | 1996-03-18 | 1997-08-05 | The United States Of America As Represented By The Secretary Of The Navy | Missile telemetry data interface circuit |
| CN1536538A (en) * | 2003-04-09 | 2004-10-13 | 百利通电子(上海)有限公司 | Multichannel remote control device |
| CN1536882A (en) * | 2003-04-10 | 2004-10-13 | �Ҵ���˾ | Method for providing hardware component acdess whose data value group is not limited, its system and synchronous circuit |
| CN1862970A (en) * | 2005-05-11 | 2006-11-15 | 松下电器产业株式会社 | Audio decoding device |
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Application publication date: 20080813 Assignee: Nanjing Guodian Nanjing Grid Automation Co., Ltd. Assignor: Nanjing Automation Co., Ltd., China Electronics Corp. Contract record no.: 2012320000943 Denomination of invention: Trans-interval sampling method adopting centralized combiner Granted publication date: 20110608 License type: Common License Record date: 20120911 |
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