CN203840059U - Remote-signaling acquisition device - Google Patents
Remote-signaling acquisition device Download PDFInfo
- Publication number
- CN203840059U CN203840059U CN201420230660.4U CN201420230660U CN203840059U CN 203840059 U CN203840059 U CN 203840059U CN 201420230660 U CN201420230660 U CN 201420230660U CN 203840059 U CN203840059 U CN 203840059U
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- Prior art keywords
- remote
- remote signalling
- signaling
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- signals
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
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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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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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
- Y04S20/00—Management or operation of end-user stationary applications or the last stages of power distribution; Controlling, monitoring or operating thereof
- Y04S20/20—End-user application control systems
- Y04S20/242—Home appliances
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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
- Y04S40/124—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 using wired telecommunication networks or data transmission busses
Abstract
The utility model discloses a remote-signaling acquisition device which is connected in a communication mode with a CPU through a data bus. The remote-signaling acquisition device comprises a remote-signaling input unit, a remote-signaling conditioning unit, a photoelectric isolation unit, a filtering processing unit and a remote-signaling anti-jitter unit which are connected in sequence. The remote-signaling input unit is used for inputting switching information of remote-signaling signals. The remote-signaling conditioning unit is used for filtering interference signals with the frequency higher than a preset frequency among the remote-signaling signals. The photoelectric isolation unit is used for electrically isolating the remote-signaling signals with light as the medium. The filtering processing unit is used for filtering the electrically-isolated remote-signaling signals. The remote-signaling anti-jitter unit is used for eliminating jitter of the remote-signaling signals through a Schmidt trigger. The remote-signaling conditioning unit enhances the anti-interference ability of automatic power distribution equipment in a strong electromagnetic environment, and effectively avoids damage of strong interference signals to the equipment. In terms of hardware, the Schmidt trigger is adopted to avoid the problem of remote-signaling false report caused by frequent jitter of a switch contact under the condition that an auxiliary switch contact is oxidized or aged, and effectively eliminate the influence brought by signal jitter so as to improve the reliability and correctness of remote signaling.
Description
Technical field
The utility model relates to power distribution automation field, relates in particular to a kind of remote signalling harvester.
Background technology
Power scheduling technical standard requires remote signalling year action accuracy to reach more than 99%, guarantees reliability and the correctness of accident analysis each time.And to the result of most of power administration investigation, be that remote signalling year action accuracy on average only has 97.91%, does not reach technical standard requirement at present.Along with electrical network day by day constantly expands, scheduling and each relevant speciality are also increasing to the demand of data.The data volume later gathering is also increasing.Therefore guarantee that the integrality of data and correctness are very important.
For remote signalling mistake, send out and refuse question topic, simple photoelectricity isolation is only done in the remote signalling loop of existing equipment; Do not do hardware remote signalling conditioning and the design of hardware Anti-shaking circuit; For the processing of interference and dither signal, mostly adopt at present software debounce filtering method.At present, the difference for the software debounce filtering method of remote signalling due to the design of software jitter removing method, causes the remote signalling record start time inaccurate, causes SOE(Sequence Of Event, sequence of events recording) wrong report.And the frequent shake of remote signalling causing for the step-out by isolating switch auxiliary contact, oxidation, deformation is not done reliable and effective disappearing and trembled processing, the accuracy that easily causes moving in remote signalling wrong report, year is lower.
Utility model content
The technical problems to be solved in the utility model is, remote signalling for prior art gathers a year action accuracy defect on the low side, a kind of remote signalling harvester is provided, and this technical scheme effectively prevents remote signalling malfunction and eliminates remote signalling shake, thereby improves accuracy and the reliability that remote signalling gathers.
The utility model solves the technical scheme that its technical problem adopts: a kind of remote signalling harvester is provided, it is connected with CPU processor communication by data/address bus, described remote signalling harvester comprises for inputting the remote signalling input unit of the switching value information of remote signals, remote signalling conditioning unit for remote signals described in filtering higher than the interference signal of predeterminated frequency, for take light, described remote signals is carried out to the photoelectricity isolated location of electrical isolation as medium, remote signals after electrical isolation is carried out to the filter processing unit of filtering processing and the anti-shake unit of remote signalling of shaking for eliminate described remote signals by Schmidt trigger, wherein, described remote signalling input unit, described remote signalling conditioning unit, described photoelectricity isolated location, described filter processing unit is connected successively with the anti-shake unit of described remote signalling.
Preferably, described CPU processor is AT91SAM9X25 microprocessor.
Preferably, the anti-phase Schmidt trigger in Schmidt trigger Wei Liu road in the anti-shake unit of described remote signalling.
Preferably, the described six anti-phase Schmidt triggers in tunnel are chip SN74HCT14D.
Preferably, described switching value information comprises the displacement information of circuit breaker contact point, automatic circuit contact and relay tip.
Preferably, the predeterminated frequency in described remote signalling conditioning unit is 1KHz.
Preferably, described filter processing unit is RC low pass filter.
Preferably, described photoelectricity isolated location is photoelectrical coupler.
Preferably, described photoelectrical coupler is chip PS2501AL-1.
Preferably, the interface of described data/address bus is chip SN74HCT245NSR.
Implement the technical solution of the utility model, there is following beneficial effect: utilize remote signalling conditioning unit to strengthen the antijamming capability of power distribution automation equipment in strong electromagnetic environment, effectively avoid the damage of high reject signal to equipment; In addition, on hardware, utilize the two-door sill trigger characteristic of Schmidt trigger to avoid being oxidized at switch auxiliary contact, under aging situation, the remote signalling wrong report problem that the frequent shake of switch contact causes, the impact that remote signals shake brings be can effectively eliminate, thereby reliability and the correctness of remote signalling improved.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is described in further detail, in accompanying drawing:
Fig. 1 is the structural representation of the utility model remote signalling harvester.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein is only in order to explain the utility model, and be not used in restriction the utility model.
Refer to Fig. 1, Fig. 1 is the structural representation of the utility model remote signalling harvester, as shown in Figure 1, this remote signalling harvester 100 is by data/address bus and 200 communication connections of CPU processor, wherein, described remote signalling harvester 100 comprises the anti-shake unit 105 of remote signalling input unit 101, remote signalling conditioning unit 102, photoelectricity isolated location 103, filter processing unit 104 and remote signalling connecting successively, introduces the effect of various piece below:
Remote signalling input unit 101, for inputting the switching value information of remote signals.In the present embodiment, described switching value information comprises the displacement information of circuit breaker contact point, automatic circuit contact and relay tip.Should be noted that, switch closure or disconnection are embodied in the low and high level in inputted remote signals, the state of corresponding bit is: 0/1 (OFF/ON), CPU processor 200 judges the state of switch by reading the remote signalling position in appropriate address space, do not repeat them here.
In the present embodiment, above-mentioned circuit breaker contact point, automatic circuit contact and relay tip are without source contact, the general direct current 24V that adopts provides remote signalling power supply, and the positive minus commun of remote signalling carries out respectively magnetic bead filtering, then is connected to equipment shell ground by the high pressure ceramic disc capacitor of 2.2NF, a 3KF.The benefit of doing is like this when the high reject signals such as static, impulse train, surge enter remote signalling harvester 100, can release equipment shell by high pressure ceramic disc capacitor, thereby protection remote signalling harvester 100 is unaffected.
Remote signalling conditioning unit 102, the interference signal for remote signals described in filtering higher than predeterminated frequency.In the present embodiment, the predeterminated frequency in described remote signalling conditioning unit is 1KHz.Under strong electromagnetic interference environment; interference signal can enter remote signalling loop with the form of conduction and radiation; cause remote signalling to report even damage equipment by mistake; remote signalling conditioning unit 102 according to the features such as the frequency range of interference signal, crest voltage make rational absorption, the measure of releasing, with protection equipment and guarantee reliability and the correctness that remote signalling gathers.That is to say, utilize remote signalling conditioning unit 102 to strengthen the antijamming capability of power distribution automation equipment in strong electromagnetic environment, effectively avoid the damage of high reject signal to equipment.
Photoelectricity isolated location 103, carries out electrical isolation to described remote signals for take light as medium.Photoelectricity isolated location 103 can suppress system noise effectively, eliminates the interference of grounded circuit.In the present embodiment, described photoelectricity isolated location is photoelectrical coupler.Described photoelectrical coupler is chip PS2501AL-1.Isolation voltage is up to 5KV, and signal input part and output have been realized electrical isolation completely, and antijamming capability is strong, long service life, and efficiency of transmission is high.
Filter processing unit 104, carries out filtering processing for the remote signals to after electrical isolation.Described filter processing unit is RC low pass filter.R, C value are respectively: the preferred 4.7K of resistance, electric capacity span is 10nF-33nF, is preferably 10nF, according to cut-off frequency formula: f=1/2 π rc, the effective frequency filtering that draws low pass filter is 3.4KHz.This RC low pass filter only has good inhibitory action to other interference signal of KHz level, and little to interference signal effect more than MHz.Therefore at a ferrite bean of switching value importation string, well absorb High-frequency Interference more than 100MHz by self-heating, do not repeat them here.
The anti-shake unit 105 of remote signalling, shakes for eliminate described remote signals by Schmidt trigger.Switch auxiliary contact all can produce shake in various degree when closed or disconnection, cause the frequent variations of remote signalling, and these variations is useless to us, and must do disappears trembles processing.Utilize the two-door sill trigger characteristic impact that effectively erasure signal shake brings of Schmidt trigger.Improved reliability and the correctness of remote signalling, significant for highly relying on the electric substation of dispatch automated system.In the present embodiment, the anti-phase Schmidt trigger in Schmidt trigger Wei Liu road in the anti-shake unit of described remote signalling.The described six anti-phase Schmidt triggers in tunnel are chip SN74HCT14D.
It should be noted that, above-mentioned unit is independently device structure, does not repeat them here.
This remote signalling harvester 100 is sent to CPU processor 200 by the remote signals collecting, and in the present embodiment, described CPU processor 200 is AT91SAM9X25 microprocessor.The interface of described data/address bus is chip SN74HCT245NSR, has strengthened data/address bus driving force.
Compared to prior art, utilize remote signalling conditioning unit to strengthen the antijamming capability of power distribution automation equipment in strong electromagnetic environment, effectively avoid the damage of high reject signal to equipment; In addition, on hardware, utilize the two-door sill trigger characteristic of Schmidt trigger to avoid being oxidized at switch auxiliary contact, under aging situation, the remote signalling wrong report problem that the frequent shake of switch contact causes, the impact that remote signals shake brings be can effectively eliminate, thereby reliability and the correctness of remote signalling improved.
The foregoing is only preferred embodiment of the present utility model, be not limited to the utility model, for a person skilled in the art, the utility model can have various modifications and variations.All within spirit of the present utility model and principle, any modification of doing, be equal to replacement, improvement etc., within all should being included in claim scope of the present utility model.
Claims (10)
1. a remote signalling harvester, it is connected with CPU processor communication by data/address bus, it is characterized in that, described remote signalling harvester comprises for inputting the remote signalling input unit of the switching value information of remote signals, remote signalling conditioning unit for remote signals described in filtering higher than the interference signal of predeterminated frequency, for take light, described remote signals is carried out to the photoelectricity isolated location of electrical isolation as medium, remote signals after electrical isolation is carried out to the filter processing unit of filtering processing and the anti-shake unit of remote signalling of shaking for eliminate described remote signals by Schmidt trigger, wherein, described remote signalling input unit, described remote signalling conditioning unit, described photoelectricity isolated location, described filter processing unit is connected successively with the anti-shake unit of described remote signalling.
2. remote signalling harvester according to claim 1, is characterized in that, described CPU processor is AT91SAM9X25 microprocessor.
3. remote signalling harvester according to claim 1, is characterized in that, the anti-phase Schmidt trigger in Schmidt trigger Wei Liu road in the anti-shake unit of described remote signalling.
4. remote signalling harvester according to claim 3, is characterized in that, the described six anti-phase Schmidt triggers in tunnel are chip SN74HCT14D.
5. remote signalling harvester according to claim 1, is characterized in that, described switching value information comprises the displacement information of circuit breaker contact point, automatic circuit contact and relay tip.
6. remote signalling harvester according to claim 1, is characterized in that, the predeterminated frequency in described remote signalling conditioning unit is 1KHz.
7. remote signalling harvester according to claim 1, is characterized in that, described filter processing unit is RC low pass filter.
8. remote signalling harvester according to claim 1, is characterized in that, described photoelectricity isolated location is photoelectrical coupler.
9. remote signalling harvester according to claim 8, is characterized in that, described photoelectrical coupler is chip PS2501AL-1.
10. remote signalling harvester according to claim 1, is characterized in that, the interface of described data/address bus is chip SN74HCT245NSR.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230660.4U CN203840059U (en) | 2014-05-07 | 2014-05-07 | Remote-signaling acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420230660.4U CN203840059U (en) | 2014-05-07 | 2014-05-07 | Remote-signaling acquisition device |
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| Publication Number | Publication Date |
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| CN203840059U true CN203840059U (en) | 2014-09-17 |
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| CN201420230660.4U Expired - Fee Related CN203840059U (en) | 2014-05-07 | 2014-05-07 | Remote-signaling acquisition device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678857A (en) * | 2015-02-02 | 2015-06-03 | 上海金智晟东电力科技有限公司 | Programmable remote communication interface of FA (Feeder Automation) tester |
| CN107958586A (en) * | 2017-12-14 | 2018-04-24 | 郑州云海信息技术有限公司 | A kind of remote signalling adaptive circuit |
| CN110797982A (en) * | 2019-11-13 | 2020-02-14 | 珠海菲森电力科技有限公司 | Remote signaling acquisition method for distribution automation terminal |
| CN112595887A (en) * | 2020-12-03 | 2021-04-02 | 和远智能科技股份有限公司 | High-voltage digital quantity acquisition circuit and working method thereof |
-
2014
- 2014-05-07 CN CN201420230660.4U patent/CN203840059U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104678857A (en) * | 2015-02-02 | 2015-06-03 | 上海金智晟东电力科技有限公司 | Programmable remote communication interface of FA (Feeder Automation) tester |
| CN104678857B (en) * | 2015-02-02 | 2017-07-04 | 上海金智晟东电力科技有限公司 | A kind of programmable remote signalling interface of FA testers |
| CN107958586A (en) * | 2017-12-14 | 2018-04-24 | 郑州云海信息技术有限公司 | A kind of remote signalling adaptive circuit |
| CN110797982A (en) * | 2019-11-13 | 2020-02-14 | 珠海菲森电力科技有限公司 | Remote signaling acquisition method for distribution automation terminal |
| CN112595887A (en) * | 2020-12-03 | 2021-04-02 | 和远智能科技股份有限公司 | High-voltage digital quantity acquisition circuit and working method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140917 Termination date: 20200507 |
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| CF01 | Termination of patent right due to non-payment of annual fee |