CN201918803U - Substation signal acquisition system - Google Patents
Substation signal acquisition system Download PDFInfo
- Publication number
- CN201918803U CN201918803U CN2010206877809U CN201020687780U CN201918803U CN 201918803 U CN201918803 U CN 201918803U CN 2010206877809 U CN2010206877809 U CN 2010206877809U CN 201020687780 U CN201020687780 U CN 201020687780U CN 201918803 U CN201918803 U CN 201918803U
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- voltage
- distributed
- merge cells
- substation
- module
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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
- 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 belongs to the technical field of substation equipment and relates a substation signal acquisition system, which comprises a voltage transformer, line merging units which are distributed at different intervals, and a bus bar voltage merging unit. The bus bar voltage merging unit comprises a data processing and control module with a field programmable gate array (FPGA), and a synchronization function module, an Ethernet communication module and a man-machine interaction module which are connected with the data processing and control module, wherein the data processing and control module is connected with the output end of the voltage transformer. Voltage data acquired by the voltage transformer is coded through the FPGA and then is transmitted to the merging units which are distributed at different intervals through optical fibers. Synchronization signals generated by the synchronization function module are also coded through the FPGA and then are transmitted to the merging units which are distributed at different intervals through optical fibers. The substation signal acquisition system has the beneficial effects that data acquired by voltage and current transformers is distributed and shared; by adopting a working mode of mutual synchronization which is mainly adopted among the cascade merging units and master-slave synchronization which is secondarily adopted among the cascade merging units, voltage data and current data are ensured to be acquired synchronously; and by effectively cascading the merging units, the multiplexing of voltage acquisition signals, current acquisition signals and the like is realized, the number of the primary equipment of a substation is decreased and substation construction cost is reduced.
Description
Technical field
The utility model belongs to electric and electronic technical field, relates to the signal acquiring system that adopts in the power system transformer substation.
Technical background
Merge cells is a physical location of redetermination in the electronic mutual inductor relevant criterion; its major function is to receive voltage, the current signal that a plurality of electronic mutual inductors are gathered, and calculates, handles and send to secondary devices such as protection, observing and controlling according to the form of standard code.Merge cells is made up of synchronizing function module, data processing and control module, ethernet communication module and human-computer interaction module 4 parts.Usually, merge cells links to each other with voltage, current transformer, gathers three-phase voltage, current signal processing back to secondary device; But now increasing transformer station is transforming or when newly-built, for the consideration of saving equipment, aspect such as reduce cost, wishes only to place one group of voltage transformer test busbar voltage, and the data that collect are for sharing between each merge cells.In this case, the merge cells that is distributed in different interval must obtain correct voltage signal sampling value, and the current signal that collects with the current transformer transmission of packing could be satisfied the needs of secondary device.On the other hand, owing to the phase place between voltage, current signal is the key factor that influence metering, protection are judged, assurance device synchronous working, signal synchronous collection also are the problems that the device cascade need solve.
The utility model content
In order to address the above problem, the utility model provides a kind of change transformer station signal acquiring system that can save equipment, reduce cost, and this system can also can guarantee the synchronous acquisition of voltage, current data when external synchronization signal is lost.
The utility model adopts following technical scheme for this reason.
A kind of transformer station signal acquiring system, comprise voltage transformer, be distributed in circuit merge cells and a busbar voltage merge cells of different interval, described busbar voltage merge cells comprises data processing and control module and the coupled synchronizing function module that has FPGA, ethernet communication module and human-computer interaction module, data processing wherein links to each other with the output of voltage transformer with control module, the voltage data of voltage transformer collection reaches by optical fiber via FPGA coding back and is distributed in each merge cells at interval, and the synchronizing signal that the synchronizing function module produces also reaches by optical fiber via FPGA coding back and is distributed in each merge cells at interval.
The beneficial effects of the utility model are, by the effective cascade between merge cells, realize the multiplexing of acquired signal such as voltage, electric current, reduce transforming plant primary equipment, reduce the cost of building a station, when external synchronization signal was lost, merge cells entered principal and subordinate's mode of operation, and principal and subordinate's method of synchronization guarantees voltage, current signal synchronous acquisition; Give full play to the advantage of digital communication, guaranteed stable, the operation reliably of transformer station simultaneously.
Description of drawings
Fig. 1 is a system architecture diagram of the present utility model.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
The utility model has been used for reference net method for synchronous in the digital communication technology.The prerequisite of multi-point reliable communication and exchanges data is the whole network synchronous working.Net has two kinds of methods synchronously: the one, and the frequency of each station clock, Phase synchronization fluctuate in allowed band in the standard time clock that 6PS provides, and then each station can be considered the phase mutually synchronization; The 2nd, a more stable master clock is set, other each station is synchronized with master clock work without exception.In addition, introduce time-division multiplex technology commonly used in the communication, different time sections is utilized the different content of Channel Transmission, to improve the utilance of channel, also can save transmission mediums such as optical fiber.The utility model utilizes the voltage merge cells to receive the voltage signal that voltage transformer collects, and handles the back and transfers to merge cells at interval with the FT3 form, and point-to-point transmission has fully guaranteed the reliability and the real-time of sampled value transmission; The signal that interval merge cells received current instrument transformer collects receives the magnitude of voltage that the voltage merge cells transmits simultaneously, and secondary device is passed in packing together.
If a plurality of intervals are arranged in the transformer station; but a cover voltage transformer test busbar voltage only need be installed; each only needs that at interval current transformer is installed and tests this electric current; magnitude of voltage can obtain by the Cascading Methods between merge cells; save voltage transformer, and provide desired data for equipment such as second protection, meterings.
Referring to Fig. 1, in view of the requirement of real-time, the merge cells cascade realizes by on-site programmable gate array FPGA.The voltage merge cells is encoded the voltage data of voltage transformer collection, reach by optical fiber after 16 CRC check and be distributed in each merge cells at interval by on-site programmable gate array FPGA, merge cells is packed with current signal collection value and is given secondary device at interval, fully guarantees the correctness of its transmission.External synchronization signal just often respectively installs and all extracts lock-out pulse to proofread and correct sampling instant from external synchronization signal.Simultaneously, the voltage merge cells sends the motor synchronizing signal blanking time before sending voltage data, in case certain or certain several merge cellses do not receive external synchronization signal, enters the work of principal and subordinate's synchronous mode immediately.The voltage merge cells is that master, principal and subordinate are the mode of operation of assisting synchronously with the mutually synchronization mutually that adopts between merge cells at interval, guarantee the synchronous acquisition of voltage, current data, avoided because both asynchronous workings, voltage data passes at interval merge cells also need carry out processings such as difference because the voltage merge cells sends synchronizing signal and is not more than sampled value at interval at interval, therefore can not occur losing a phenomenon when two kinds of methods of synchronization switchings.
Claims (1)
1. transformer station's signal acquiring system, comprise voltage transformer and be distributed in the circuit merge cells of different interval, it is characterized in that, also comprise a busbar voltage merge cells, described busbar voltage merge cells comprises data processing and control module and the coupled synchronizing function module that has FPGA, ethernet communication module and human-computer interaction module, data processing wherein links to each other with the output of voltage transformer with control module, the voltage data of voltage transformer collection reaches by optical fiber via FPGA coding back and is distributed in each merge cells at interval, and the synchronizing signal that the synchronizing function module produces also reaches by optical fiber via FPGA coding back and is distributed in each merge cells at interval.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206877809U CN201918803U (en) | 2010-12-29 | 2010-12-29 | Substation signal acquisition system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206877809U CN201918803U (en) | 2010-12-29 | 2010-12-29 | Substation signal acquisition system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201918803U true CN201918803U (en) | 2011-08-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206877809U Expired - Fee Related CN201918803U (en) | 2010-12-29 | 2010-12-29 | Substation signal acquisition system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201918803U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792413A (en) * | 2014-01-28 | 2014-05-14 | 中国海洋石油总公司 | Multi-channel weak signal acquisition circuit |
| CN104898606A (en) * | 2015-04-10 | 2015-09-09 | 航天科工深圳（集团）有限公司 | Intelligent ring main unit and monitoring unit system and monitoring method thereof |
| CN109298275A (en) * | 2018-10-19 | 2019-02-01 | 许昌许继软件技术有限公司 | A kind of monitoring system and device for taking into account arrester monitoring and electric energy quality monitoring |
-
2010
- 2010-12-29 CN CN2010206877809U patent/CN201918803U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103792413A (en) * | 2014-01-28 | 2014-05-14 | 中国海洋石油总公司 | Multi-channel weak signal acquisition circuit |
| CN104898606A (en) * | 2015-04-10 | 2015-09-09 | 航天科工深圳（集团）有限公司 | Intelligent ring main unit and monitoring unit system and monitoring method thereof |
| CN109298275A (en) * | 2018-10-19 | 2019-02-01 | 许昌许继软件技术有限公司 | A kind of monitoring system and device for taking into account arrester monitoring and electric energy quality monitoring |
| CN109298275B (en) * | 2018-10-19 | 2021-08-06 | 许昌许继软件技术有限公司 | Monitoring system and device for monitoring lightning arrester and monitoring power quality |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20110803 Termination date: 20181229 |
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| CF01 | Termination of patent right due to non-payment of annual fee |