CN103575971B - A kind of intelligent substation universal data collection method - Google Patents
A kind of intelligent substation universal data collection method Download PDFInfo
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- CN103575971B CN103575971B CN201310571558.0A CN201310571558A CN103575971B CN 103575971 B CN103575971 B CN 103575971B CN 201310571558 A CN201310571558 A CN 201310571558A CN 103575971 B CN103575971 B CN 103575971B
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Classifications
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00002—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by monitoring
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00006—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network characterised by information or instructions transport means between the monitoring, controlling or managing units and monitored, controlled or operated power network element or electrical equipment
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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
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
- H02J13/00032—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for
- H02J13/00034—Systems characterised by the controlled or operated power network elements or equipment, the power network elements or equipment not otherwise provided for the elements or equipment being or involving an electric power substation
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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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- 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
- Y04S10/30—State monitoring, e.g. fault, temperature monitoring, insulator monitoring, corona discharge
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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
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
Abstract
The invention provides a kind of intelligent substation universal data collection method, comprise the steps: that step 1, high frequency gather voltage signal and the current signal of intelligent substation, obtain high frequency sampled data; The frequency division data of step 2, acquisition high frequency sampled data; Step 3, standardized transmission is carried out to frequency division data.Compared to the prior art; a kind of intelligent substation universal data collection method provided by the invention; realize intelligent substation by means of only a set of Acquisition Circuit and entirely stand all kinds of different application such as protection, measurement, metering and PMU to the demand of different sample frequency; reduce data acquisition equipment configuration quantity; simplified intelligent Substation Design, reduces the construction cost of transformer station.
Description
Technical field
The present invention relates to substation data acquisition method, be specifically related to a kind of intelligent substation universal data collection method.
Background technology
The series of advantages such as in recent years, along with the develop rapidly of electronic technology and Fibre Optical Communication Technology, electronic mutual inductor is widely applied in transformer station, and compared with conventional electromagnetic mutual inductor, electronic mutual inductor has good in anti-interference performance, and measuring accuracy is high.Merge cells is as the bridge connecting electronic mutual inductor or routine transformer and wall secondary device, and for protecting, the reliability operation of measure and control device provides safeguard.Current, the important component part being applied as intelligent substation construction of electronic mutual inductor; But along with the difference of application demand in intelligent substation is specifically built, the requirement of all kinds of wall secondary devices to sample frequency is also not quite similar.Due to employing in tradition transformer station is the mode that cable connects, and the data of each secondary device are gathered respectively by respective device, causes gathering resource repeated configuration, also increases the complexity of Substation Design simultaneously.And at digital transformer substation and even current intelligent substation, the collection of data is all realized by merge cells, and protective device, measure and control device, PMU device, equipment for monitoring power quality, fault wave recording device and the requirement of electrical energy metering device to data acquiring frequency different, result causes for the respective independently merge cells of demand needs different separately configuration, although the application of merge cells achieves the digital collection of data, but the configuration of redundancy also causes the repetition and the waste that gather resource distribution, add the construction cost of transformer station, add the complexity of Substation Design, bring difficulty also to the operation maintenance of transformer station from now on.
Therefore, provide one can meet whole transformer station Various types of data by a set of Acquisition Circuit and gather demand, the intelligent substation universal data collection method effectively simplifying substation data collecting device quantity and minimizing transmitted data on network flow seems particularly important.
Summary of the invention
In order to meet the needs of prior art, a kind of method described in intelligent substation universal data collection method that the invention provides comprises the steps:
Step 1: high frequency gathers voltage signal and the current signal of described intelligent substation, obtains high frequency sampled data;
Step 2: the frequency division data obtaining described high frequency sampled data; And
Step 3: standardized transmission is carried out to described frequency division data.
Preferably, described high frequency sampled data is gathered by high frequency collection CPU board or high frequency acquisition module in described step 1; Described high frequency gathers CPU board or described high frequency acquisition module is connected with electronic mutual inductor by optical fiber, receives the described high frequency sampled data that described electronic mutual inductor sends;
Described high frequency gathers CPU board and the 256 points/cycle high frequency sampled data gathered is outputted to respectively high-frequency transmission CPU board and frequency division transmission CPU board; Described 256 points/cycle high frequency sampled data is outputted to high-frequency transmission module and frequency division transport module by described high frequency acquisition module respectively; The number of described frequency division transmission CPU board and described frequency division transport module is N, and N is at least 1; The number of described high-frequency transmission CPU board and described high-frequency transmission module is 1;
Described high frequency gathers CPU board and described high frequency acquisition module includes high frequency collecting circuit board; Described high frequency collecting circuit board comprises high-frequency crystal oscillator circuit and high frequency sampling FPGA circuit; Described high-frequency crystal oscillator circuit is for generation of 256 points/all wave impulses; Described high frequency sampling FPGA circuit sends high frequency sampling pulse according to the crystal oscillator frequency of described high-frequency crystal oscillator circuit to described electronic mutual inductor, and receives the described high frequency sampled data of described electronic mutual inductor feedback;
Preferably, obtain described frequency division data in described step 2 to comprise:
Step 2-1: customize described frequency division data; Described frequency division transmission CPU board or described frequency division transport module customize described frequency division data by hardware dial-up; Described frequency division transmission CPU board or described frequency division transmission CPU module export the sampled data of different frequency by arranging different frequency division dial-ups;
Step 2-2: by the digital signal processor of described frequency division transmission CPU board or described frequency division transport module, interpolation is carried out to described high frequency sampled data, obtain described frequency division data; Described digital signal processor adopts sectional parabola interpolation algorithm to carry out mathematic interpolation to described 256 points/cycle high frequency sampled data;
Preferably, described frequency division transmission CPU board and described frequency division transport module include frequency division FPGA circuit and frequency division crystal oscillating circuit; Described frequency division crystal oscillating circuit is for generation of the divided pulse corresponding with described frequency division dial-up; Described frequency division FPGA circuit carries out data transmission according to described divided pulse;
Preferably, frequency division data described in described step 3 are by meeting the point-to-point of IEC61850-9-2 standard or networking mode transmits;
Preferably, described high frequency gathers CPU board, described high-frequency transmission CPU board and described frequency division transmission CPU board and is integrated on a device, and when the clock sync signal that unified employing meets IRIG-B or IEEE1588 standard carries out synchronous pair;
Described high frequency acquisition module, described high-frequency transmission module and described frequency division transport module are integrated in a CPU board, and when the clock sync signal that unified employing meets IRIG-B or IEEE1588 standard carries out synchronous pair.
Compared with immediate prior art, excellent effect of the present invention is:
1, in technical solution of the present invention, adopt collecting method disclosed in the present application, intelligent electronic device (IntelligentElectronicDevice in intelligent substation, IED) sample frequency of needs can directly be received, do not need to carry out data difference calculating voluntarily, not only simplify circuit design, decrease the workload of device self, also improve the treatment effeciency of each equipment of intelligent substation, the real-time of the device promoted further simultaneously;
2, in technical solution of the present invention, adopt and meet the point-to-point of IEC61850-9-2 standard or networking transmission mode; Adopt 80 points/cycle transmission 126byte length message in prior art, transmission 4000 packet voice per second, bandwidth is 3.84M/s; And after adopting collecting method disclosed in the present application, high-frequency data is interpolated to 24 points/cycle, same message length, transmission 1200 packet voice per second, bandwidth is only 1.15M/s, effectively reduces network bandwidth use amount, is conducive to the stability and the reliability that improve network communication and transmission;
3, in technical solution of the present invention, by reducing the network bandwidth, improve the data of the merge cells that network can be accessed by; When transmission 80 points/cycle data, the data of accessible merge cells improve 3 times, significantly can reduce the usage quantity of switch, reduce the investment construction cost of transformer station further under the prerequisite ensureing legacy network reliability and security;
4, in technical solution of the present invention, a high-frequency transmission CPU board is set and high-frequency transmission module does not carry out interpolation, only the sampled data of 256 points/cycle is transmitted, high-frequency transmission CPU board alleviates the load that high frequency gathers CPU board, ensures that high frequency gathers the stable operation that CPU board carries out data acquisition timer; High-frequency transmission module alleviates the load of high frequency acquisition module, ensure that the stability that high frequency acquisition module runs and reliability.
5, a kind of intelligent substation universal data collection method provided by the invention; realize intelligent substation by means of only a set of Acquisition Circuit and entirely stand all kinds of different application such as protection, measurement, metering and PMU to the demand of different sample frequency; reduce data acquisition equipment configuration quantity; simplified intelligent Substation Design, reduces the construction cost of transformer station.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention is further described.
Fig. 1 is: a kind of intelligent substation universal data collection method process flow diagram in the embodiment of the present invention;
Fig. 2 is: multi-CPU plate Organization Chart in the embodiment of the present invention;
Fig. 3 is: single CPU board part Organization Chart in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present application, the technical scheme in the embodiment of the present application is clearly and completely described.
The invention provides a kind of intelligent substation universal data collection method, as Fig. 1 shows collecting method process flow diagram, be specially:
Step 1, high frequency gather voltage signal and the current signal of intelligent substation, thus obtain high frequency sampled data;
In tradition transformer station, it is 32 points/cycle (1600Hz) that measure and control device commonly uses sample frequency; In intelligent substation, it is 80 points/cycle (4000kHz) that electronic mutual inductor and merge cells commonly use sample frequency; Protective relaying device (as route protection etc.), conventional sample frequency comprises 24 points/cycle (1200Hz), 32 points/cycle (1600Hz), 48 points/cycle (2400Hz); PMU device is commonly used sample frequency and is comprised 80 points/cycle (4000Hz), 96 points/cycle (4800Hz), 100 points/cycle (5000Hz) and 200 points/cycle (10kHz); Equipment for monitoring power quality, according to the standard-required accurately can measuring more than 50 times harmonic waves, sample frequency should be not less than 128 points/cycle (6400Hz); Fault wave recording device, sample frequency is not less than 100 points/cycle (5000Hz); Digitizing watt-hour meter, comprising precision is 0.01 grade standard watt-hour meter and 0.05 grade standard watt-hour meter, common metering sample frequency is 160 points/cycle (8000Hz), and to reach higher accuracy requirement, its sample frequency should reach 256 points/cycle (12.8kHz); For meeting actual condition demand, the Acquisition Circuit high frequency based on FPGA is adopted to gather voltage signal and the current signal of intelligent substation in the present embodiment, obtain the high frequency sampled data of 256 points/cycle (12.8kHz), the time interval between each high frequency sampled data is 78.125us(20ms/256);
The frequency division data of step 2, acquisition high frequency sampled data; 24 o'clock/cycle, minute audio data such as 100 o'clock/cycle and 128 o'clock/cycle is obtained at 32 o'clock/cycle, 48 o'clock/cycle, 80 o'clock/cycle, 96 o'clock/cycle according to the actual demand of different intelligent electronic installation in intelligent substation;
When the sample frequency transmission mode of employing 80 points/cycle, intelligent substation line protective devices of the prior art are by becoming 24 points/cycle according to its device internal demands by data interpolating after network reception sample frequency; And line protective devices directly can receive 24 points/cycle sampled data in the present embodiment, do not need to carry out data interpolating voluntarily, improve work efficiency; When adopting 80 points/cycle transmission length to be the IEC61850-9-2 typical case message of 126byte in prior art, transmission 4000 packet voice per second, bandwidth is 3.84M/s, and transmission 1200 packet voice per second in the present embodiment, bandwidth is only 1.15M/s.
Step 3, by meeting the point-to-point of IEC61850-9-2 standard or networking mode carries out standardized transmission to frequency division data.
The present embodiment comprises and gathers by high frequency the method that CPU board and the two kinds of high frequency collections of high frequency acquisition module and data transmit;
(1) Fig. 2 shows the concrete structure figure adopting high frequency collection CPU board, high-frequency transmission CPU board and frequency division transmission CPU board intelligent substation to be carried out to high frequency collection and data transmission; Based on the intelligent substation universal data collection method shown in Fig. 2 be:
Step 1: high frequency is gathered CPU board and is connected with electronic mutual inductor by optical fiber, receives the high-frequency data that electronic mutual inductor sends; High frequency gathers CPU board and the 256 points/cycle high-frequency data gathered is outputted to respectively high-frequency transmission CPU board and frequency division transmission CPU board; High frequency gathers CPU board, high-frequency transmission CPU board and frequency division transmission CPU board and is integrated on a device, data interaction is carried out by the high-speed serial bus in speeder, and when the clock sync signal that unified employing meets IRIG-B or IEEE1588 standard carries out synchronous pair; High frequency gathers CPU board and comprises high frequency collecting circuit board; High frequency collecting circuit board comprises high-frequency crystal oscillator circuit and high frequency sampling FPGA circuit; High-frequency crystal oscillator circuit is for generation of 256 points/cycle (i.e. 12.8kHz) pulse; High frequency sampling FPGA circuit sends high frequency sampling pulse according to the crystal oscillator frequency of high-frequency crystal oscillator circuit to electronic mutual inductor, and receives the high frequency sampled data of electronic mutual inductor feedback;
When universal data collection method disclosed by the invention is only for measuring the used time, namely only needing high frequency collection (256 points/all wave impulses), and during high-frequency transmission, frequency division transmission CPU board not to be configured or the number of frequency division transmission CPU board is set to 0; When if desired carrying out frequency division transmission, the number of frequency division transmission CPU board is that N, N are at least 1; The number of high-frequency transmission CPU board is 1; High-frequency transmission CPU board does not carry out interpolation calculation, only the high frequency sampled data of 256 points/cycle is transmitted, thus alleviates the load that high frequency gathers CPU board, ensures that high frequency gathers CPU board and gathers the stable operation of high frequency sampled data timer.
Step 2: obtain frequency division data by different frequency divisions transmission CPU board; Concrete steps are:
Step 2-1: customization frequency division data; Frequency division transmission CPU board is by hardware dial-up customization frequency division data; Frequency division transmission CPU board exports the sampled data of different frequency by arranging different frequency division dial-ups; Each frequency division transmission CPU board both can be printed separately, also can unify to print, and when adopting unified printing, the hardware configuration of each frequency division transmission CPU board is identical; Different frequency division transmission CPU board realize the output of different frequency by means of only hardware dial-up, guarantee the interchangeability after different frequency division transmission CPU board fault;
Step 2-2: by the digital signal processor of frequency division transmission CPU board, interpolation is carried out to high-frequency data, obtain frequency division data; Digital signal processor adopts sectional parabola interpolation algorithm to carry out mathematic interpolation to high-frequency data; Frequency division transmission CPU board comprises frequency division FPGA circuit and frequency division crystal oscillating circuit.
(2) Fig. 3 shows and adopts high frequency acquisition module, high-frequency transmission module and frequency division transport module to carry out the concrete structure figure of high frequency collection and data transmission to intelligent substation; Based on the intelligent substation universal data collection method shown in Fig. 3 be:
Step 1: high frequency acquisition module is connected with electronic mutual inductor by optical fiber, receives the high-frequency data that electronic mutual inductor sends; 256 points/cycle high frequency sampled data is outputted to high-frequency transmission module and frequency division transport module by high frequency acquisition module respectively; High frequency acquisition module, high-frequency transmission module and frequency division transport module are integrated in a CPU board, and when the clock sync signal that unified employing meets IRIG-B or IEEE1588 standard carries out synchronous pair; The number of frequency division transport module is N; The number of high-frequency transmission module is 1; High-frequency transmission module does not carry out interpolation calculation, only the high frequency sampled data of 256 points/cycle is transmitted, thus alleviates the load of high frequency acquisition module, ensures that high frequency acquisition module height gathers the stable operation of audio data timer; High frequency acquisition module comprises high frequency collecting circuit board; High frequency collecting circuit board comprises high-frequency crystal oscillator circuit and high frequency sampling FPGA circuit;
Step 2: obtain frequency division data by different frequency division transport modules, concrete steps are:
The concrete steps obtaining frequency division data are:
Step 2-1: customization frequency division data; Frequency division transport module is by hardware dial-up customization frequency division data; Frequency division transmission CPU module exports the sampled data of different frequency by arranging different frequency division dial-ups; The hardware configuration of each frequency division transport module is identical, and different frequency division transmission CPU module realize the output of different frequency by means of only hardware dial-up, guarantees the interchangeability after different frequency division transmission CPU module fault;
Step 2-2: carry out interpolation to high-frequency data by the digital signal processor of frequency division transport module, obtains frequency division data; Digital signal processor adopts sectional parabola interpolation algorithm to carry out mathematic interpolation to high-frequency data; Frequency division transport module comprises frequency division FPGA circuit and frequency division crystal oscillating circuit.
In the present embodiment when 256 points/cycle high frequency sampled data is interpolated to 80 points/cycle, its truncation error is 7.28*10-5, and relative error is 9.28*10-4, meets the accuracy requirement of sampling.
The present embodiment adopt unified synchronizing clock signals to guarantee the sampled data of different frequency in 24 points/cycle ~ 256 point/cycle is all transmitted in 1s, effectively can avoid frequency division the crystal oscillating circuit accumulation of self clocking error and data transmission exception of causing in situation when to lack pair; By bus backplane by pair time synchronous pulse signal circuit walk abreast, so can ensure when pair time signal come interim, all CPU board or module all will reset according to clock calculation device, guarantee the internal consistency of all data; That unifies if do not carry out by means of only respective frequency division FPGA circuit carries out frequency division between each frequency division transmission CPU board or frequency division transport module is synchronous, due to the error existed between frequency division FPGA circuit, will cause time irreversibility through after a period of time; When transmitting 80 points/cycle frequency data in the present embodiment, its frequency is 4000, data calculator is 0-3999, when clock pulse is brought face after data calculator reset, CPU board sends the 0th bag data, after the 3999th packet voice sends, in theory from the mistiming of pulse when next pair be 250us, but actual device only needs to be sent by message before this; Synchronous during unification pair by each CPU board or module, guarantee that two times of the beginning that message sends and end realize synchronous, the message of intermediate link send at equal intervals by each frequency division FPGA circuit realiration, effectively can improve the Stability and veracity that message sends.
A kind of intelligent substation universal data collection method that the present embodiment provides; realize intelligent substation by means of only a set of Acquisition Circuit and entirely stand all kinds of different application such as protection, measurement, metering and PMU device to the demand of different sample frequency; reduce data acquisition equipment configuration quantity; simplified intelligent Substation Design, reduces the construction cost of transformer station.
Finally should be noted that: described embodiment is only some embodiments of the present application, instead of whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the application's protection.
Claims (4)
1. an intelligent substation universal data collection method, is characterized in that, described method comprises the steps:
Step 1: high frequency gathers voltage signal and the current signal of described intelligent substation, obtains high frequency sampled data;
Step 2: the frequency division data obtaining described high frequency sampled data; And
Step 3: standardized transmission is carried out to described frequency division data;
Described high frequency sampled data is gathered by high frequency collection CPU board or high frequency acquisition module in described step 1; Described high frequency gathers CPU board or described high frequency acquisition module is connected with electronic mutual inductor by optical fiber, receives the described high frequency sampled data that described electronic mutual inductor sends;
Described high frequency gathers CPU board and the 256 points/cycle high frequency sampled data gathered is outputted to respectively high-frequency transmission CPU board and frequency division transmission CPU board; Described 256 points/cycle high frequency sampled data is outputted to high-frequency transmission module and frequency division transport module by described high frequency acquisition module respectively; The number of described frequency division transmission CPU board and described frequency division transport module is N, and N is at least 1; The number of described high-frequency transmission CPU board and described high-frequency transmission module is 1;
Described high frequency gathers CPU board and described high frequency acquisition module includes high frequency collecting circuit board; Described high frequency collecting circuit board comprises high-frequency crystal oscillator circuit and high frequency sampling FPGA circuit; Described high-frequency crystal oscillator circuit is for generation of 256 points/all wave impulses; Described high frequency sampling FPGA circuit sends high frequency sampling pulse according to the crystal oscillator frequency of described high-frequency crystal oscillator circuit to described electronic mutual inductor, and receives the described high frequency sampled data of described electronic mutual inductor feedback;
Obtain described frequency division data in described step 2 to comprise:
Step 2-1: customize described frequency division data; Described frequency division transmission CPU board or described frequency division transport module customize described frequency division data by hardware dial-up; Described frequency division transmission CPU board or described frequency division transmission CPU module export the sampled data of different frequency by arranging different frequency division dial-ups;
Step 2-2: by the digital signal processor of described frequency division transmission CPU board or described frequency division transport module, interpolation is carried out to described high frequency sampled data, obtain described frequency division data; Described digital signal processor adopts sectional parabola interpolation algorithm to carry out mathematic interpolation to described 256 points/cycle high frequency sampled data.
2. a kind of intelligent substation universal data collection method as claimed in claim 1, is characterized in that, described frequency division transmission CPU board and described frequency division transport module include frequency division FPGA circuit and frequency division crystal oscillating circuit; Described frequency division crystal oscillating circuit is for generation of the divided pulse corresponding with described frequency division dial-up; Described frequency division FPGA circuit carries out data transmission according to described divided pulse.
3. a kind of intelligent substation universal data collection method as claimed in claim 1, is characterized in that, frequency division data described in described step 3 are by meeting the point-to-point of IEC61850-9-2 standard or networking mode transmits.
4. a kind of intelligent substation universal data collection method as claimed in claim 1, it is characterized in that, described high frequency gathers CPU board, described high-frequency transmission CPU board and described frequency division transmission CPU board and is integrated on a device, and when the clock sync signal that unified employing meets IRIG-B or IEEE1588 standard carries out synchronous pair;
Described high frequency acquisition module, described high-frequency transmission module and described frequency division transport module are integrated in a CPU board, and when the clock sync signal that unified employing meets IRIG-B or IEEE1588 standard carries out synchronous pair.
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| CN201310571558.0A CN103575971B (en) | 2013-11-13 | 2013-11-13 | A kind of intelligent substation universal data collection method |
| PCT/CN2014/089756 WO2015070707A1 (en) | 2013-11-13 | 2014-10-29 | Method for acquiring universal data of intelligent substation |
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| CN201310571558.0A CN103575971B (en) | 2013-11-13 | 2013-11-13 | A kind of intelligent substation universal data collection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106680582A (en) * | 2016-11-21 | 2017-05-17 | 云南电网有限责任公司电力科学研究院 | Electronic transformer high-frequency acquisition and frequency-division transmission method and system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103575971B (en) * | 2013-11-13 | 2016-01-20 | 国家电网公司 | A kind of intelligent substation universal data collection method |
| CN104503298A (en) * | 2014-11-25 | 2015-04-08 | 许继电气股份有限公司 | Merging unit with multi-sampling rate output |
| CN107390023B (en) * | 2017-06-02 | 2020-07-24 | 中国电力科学研究院 | Broadband multi-frequency measuring device for electric quantity of power grid and implementation method thereof |
| CN107255758B (en) * | 2017-06-02 | 2021-03-23 | 中国电力科学研究院 | Broadband multi-frequency electric quantity unified measurement and analysis system and implementation method |
| CN108362962B (en) * | 2018-02-05 | 2021-10-08 | 国网辽宁省电力有限公司 | Centralized data preprocessing method for multi-measurement and control device fusion |
| CN112492679B (en) * | 2020-10-23 | 2023-07-14 | 许继集团有限公司 | Method and system for generating B code time synchronization output by using 5G communication terminal |
| CN116846038A (en) * | 2023-08-29 | 2023-10-03 | 武汉船用电力推进装置研究所(中国船舶集团有限公司第七一二研究所) | Method, device, equipment and storage medium for collecting and transmitting battery data |
| CN117318314A (en) * | 2023-11-29 | 2023-12-29 | 广东电网有限责任公司中山供电局 | Current synchronous sampling method and related device for transformer substation alternating current power supply system |
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| CN103575971A (en) | 2014-02-12 |
| WO2015070707A1 (en) | 2015-05-21 |
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