CN203929884U - Digital transformer substation measures special-purpose merge cells - Google Patents
Digital transformer substation measures special-purpose merge cells Download PDFInfo
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- CN203929884U CN203929884U CN201420357260.XU CN201420357260U CN203929884U CN 203929884 U CN203929884 U CN 203929884U CN 201420357260 U CN201420357260 U CN 201420357260U CN 203929884 U CN203929884 U CN 203929884U
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Abstract
The utility model provides a kind of digital transformer substation to measure special-purpose merge cells, provide metering special signal to measure to digitizing ammeter, comprise receiver, switch input plug-in unit, metering processor card and power insert, receiver received current or voltage signal, switch input plug-in unit receiving key input signal, after metering processor card carries out detection calculations to the output signal of receiver and switch input plug-in unit respectively, special signal is measured in output, power insert is given respectively receiver, switch input plug-in unit and metering processor card provide power supply, meet the current and voltage data collection at a plurality of intervals, the hardware of simultaneously realizing each blank signal is independent, is easy to safeguard, data that can the several data sources of precise synchronization, improve measuring accuracy.
Description
Technical field
The utility model relates to the merge cells equipment in the construction of digitalized electric power grid, particularly relates to a kind of digital transformer substation and measures special-purpose merge cells.
Background technology
In recent years, along with the application of IEC 61850 standards and coming into operation of a large amount of digitizers, digital transformer substation was used widely in engineering practice.Digital transformer substation is the same with conventional substation, can have electric energy metrical needs equally, and therefore, the metering of digitizing ammeter, as the basis of grid company business revenue, has consequence.
At present, existing each producer's design, the digital transformer substation metering system design moving is all the pattern of mutual inductor+merge cells signal sampling output+ammeter of use.Mutual inductor data-signal outputs to merge cells, needs merge cells to realize that integration, angle ratio are proofreaied and correct and the signal such as synchronous is processed, then the integrated signal after processing is distributed to the equipment such as protection, metering, measurement after resampling.Merge cells wherein, as data hinge, have the ability that changes data, but the ability of this change data does not meet the requirement of metering system data uniqueness; The synchro system of simultaneously closing unit is subject to processing power, the impact of network pressure, and Integral synchronous precision is limited, and time delay situation is serious.
Utility model content
The purpose of this utility model is to provide a kind of digital transformer substation and measures special-purpose merge cells, and solution continuous data is not unique, measuring accuracy is not high and the problem of time delay.
To achieve these goals, the utility model provides a kind of digital transformer substation to measure special-purpose merge cells, provide metering special signal to measure to digitizing ammeter, comprise receiver, switch input plug-in unit, metering processor card and power insert, receiver received current or voltage signal, switch input plug-in unit receiving key input signal, after metering processor card carries out detection calculations to the output signal of receiver and switch input plug-in unit respectively, special signal is measured in output, power insert is given respectively receiver, switch input plug-in unit and metering processor card provide power supply.
Also comprise standby plug-in unit, metering processor card is provided with fiber optic Ethernet interface and electric Ethernet RJ45 interface.
Receiver is provided with 9 signalling channels.
The special-purpose merge cells of metering the utility model proposes, is exactly the physical equipment from electronic mutual inductor to the separated links digitizing ammeter, has changed the Data-Link topological structure of existing digitizing power station metering system.
Electronic mutual inductor senses after the electric current and voltage on electric power networks, use the deal with data sampling on the spot of special-purpose collecting unit, complete after the function of angle ratio correction, then directly through optical cable, be sent to the special-purpose merge cells of metering, finally measuring special-purpose merge cells provides and independently measures special signal and deliver to digitizing ammeter, realize thus data no longer by existing merge cells, Data-Link is independent, keeps closure, uniqueness and the digitizing of continuous data.
The beneficial effects of the utility model are current and voltage data collections that the special-purpose merge cells of metering meets a plurality of intervals, and the hardware of simultaneously realizing each blank signal is independent, are easy to safeguard; Data that can the several data sources of precise synchronization, improve measuring accuracy.
Accompanying drawing explanation
Fig. 1 is for adopting the digitizing power station metering system structural representation of existing merge cells;
Fig. 2 is for adopting digitizing of the present utility model power station metering system structural representation;
Fig. 3 is the structural representation of the utility model embodiment panel.
Embodiment
Below in conjunction with accompanying drawing, describe preferred embodiment of the present utility model in detail.
Embodiment as shown in Figure 1, Figure 2 and Figure 3, the present embodiment provides a kind of digital transformer substation to measure special-purpose merge cells, provide and independently measure special signal and measure to digitizing ammeter, comprise three groups of receivers, switch input plug-in unit and metering processor card, and power insert and standby plug-in unit, every Sets of Measurement processor card is provided with fiber optic Ethernet interface and electric Ethernet RJ45 interface, and standby plug-in unit as required dilatation is selected.
Every group of receiver NO2, NO5 and NO8 access respectively the current and voltage signals input at an interval, and every group of receiver is provided with 9 passages; Every group of switch inputted plug-in unit NO3, NO6 and NO9 receiving key Position input contact, meets the input that substation operation mode changes; Every Sets of Measurement processor card NO4, NO7 and NO10 receive respectively the independent metering special signal of the output of receiver, metering special signal is carried out to independent re-synchronization, data packing, becomes IEC 61850 standard format signals, by RJ45 interface, is forwarded to digitizing ammeter.
The special-purpose merge cells of metering that the present embodiment proposes: on the one hand, adopted digitizing technique, optical cable transmission, has reduced the error loss of transmission channel; On the other hand, guarantee the independence of metering system, become electric mutual inductor data in independent metering system to the bridge of electronic ammeter; Meanwhile, because metering processor card hardware alignment processing ability improves, can precise synchronization different pieces of information source data, do not need to resample, improve measuring accuracy.
The present embodiment is actual is exactly the data centralization forwarding problems that has solved the independent metering system design in digital transformer substation construction.For the construction of digital transformer substation, pave the way, its popularization has been played to great facilitation.In the Intelligent transformer station of some, after application, can obviously improve digitizing ammeter electric energy metrical accuracy, strengthen independence and the reliability of electric energy acquisition, facilitate operations staff to manage.Standardization numeralization Substation Design, the development and stabilization that conscientiously promote digital transformer substation are used.
Claims (3)
1. a digital transformer substation measures special-purpose merge cells, provide metering special signal to measure to digitizing ammeter, it is characterized in that: comprise receiver, switch input plug-in unit, metering processor card and power insert, receiver received current or voltage signal, switch input plug-in unit receiving key input signal, after metering processor card carries out detection calculations to the output signal of receiver and switch input plug-in unit respectively, special signal is measured in output, power insert is given respectively receiver, switch input plug-in unit and metering processor card provide power supply.
2. digital transformer substation according to claim 1 measures special-purpose merge cells, it is characterized in that: also comprise standby plug-in unit, metering processor card is provided with fiber optic Ethernet interface and electric Ethernet RJ45 interface.
3. digital transformer substation according to claim 1 and 2 measures special-purpose merge cells, it is characterized in that: receiver is provided with 9 signalling channels.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357260.XU CN203929884U (en) | 2014-07-01 | 2014-07-01 | Digital transformer substation measures special-purpose merge cells |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420357260.XU CN203929884U (en) | 2014-07-01 | 2014-07-01 | Digital transformer substation measures special-purpose merge cells |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203929884U true CN203929884U (en) | 2014-11-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420357260.XU Expired - Fee Related CN203929884U (en) | 2014-07-01 | 2014-07-01 | Digital transformer substation measures special-purpose merge cells |
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| CN (1) | CN203929884U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849025A (en) * | 2017-03-29 | 2017-06-13 | 贵州电网有限责任公司电力科学研究院 | A kind of special combining unit of digital transforming plant protecting |
-
2014
- 2014-07-01 CN CN201420357260.XU patent/CN203929884U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106849025A (en) * | 2017-03-29 | 2017-06-13 | 贵州电网有限责任公司电力科学研究院 | A kind of special combining unit of digital transforming plant protecting |
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| Date | Code | Title | Description |
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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: 20141105 Termination date: 20180701 |
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| CF01 | Termination of patent right due to non-payment of annual fee |