CN106849025A - A kind of special combining unit of digital transforming plant protecting - Google Patents
A kind of special combining unit of digital transforming plant protecting Download PDFInfo
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- CN106849025A CN106849025A CN201710195683.4A CN201710195683A CN106849025A CN 106849025 A CN106849025 A CN 106849025A CN 201710195683 A CN201710195683 A CN 201710195683A CN 106849025 A CN106849025 A CN 106849025A
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- Prior art keywords
- unit
- protection
- combining unit
- switch input
- receiver
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/22—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for distribution gear, e.g. bus-bar systems; for switching devices
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- Emergency Protection Circuit Devices (AREA)
- Remote Monitoring And Control Of Power-Distribution Networks (AREA)
Abstract
The invention discloses a kind of special combining unit of digital transforming plant protecting; protection special signal is provided to protection device; including receiver; switch input plug-in unit, protection processor card and power insert; receiver receives curtage signal; switch input plug-in unit receives switch input signal; protection processor card is input into the output signal of plug-in unit to receiver and switch and carries out output protection special signal after detection calculations respectively, and power insert is respectively to receiver, switch input plug-in unit and protection processor card offer power supply；The current and voltage data collection at multiple intervals is met, while realizing the hardware independence of each blank signal, it is easy to safeguard, it is ensured that the tightness and independence of protection system data so that protection device correct operation.
Description
Technical field
The present invention relates to the combining unit equipment in the construction of digitalized electric power grid, more particularly to a kind of digital transformer substation is protected
Protect special combining unit.
Background technology
In recent years, as the application of IEC61850 standards and electronic mutual inductor and Fibre Optical Communication Technology are in transformer station
Popularization and application, digital transformer substation turned into the developing direction of electric substation automation system.It is the same with conventional substation, numeral
It is to ensure the Shou Dao defence lines of power network safety operation to change transforming plant protecting system.Therefore, Digital RPS must also be abided by
Follow reliability, selectivity, quick-action and sensitivity principle.
At present, the digital transforming plant protecting system design of existing each producer design is all to use transformer+merging
The pattern of cell signal sampling output+protection supervisory equipment.The output of transformer data-signal is to combining unit, it is necessary to combining unit
Realize integration, angle is than difference correction and the signal transacting such as synchronous, then protection will be distributed to after the integrated signal resampling after treatment, be counted
The equipment such as amount, measurement.Wherein combining unit, as data hinge, is common to protection device and metering system, exist with next
A little problems：
1st, combining unit error compensation coefficient or angle all can be to digital transformer substations than poor change and the change of systems soft ware
Interior secondary singal is had a direct impact, and causes the inaccuracy and randomness of protection system, and even protection can be caused when serious
The malfunction of device.
2nd, when producer or metrological service safeguard to combining unit or electronic mutual inductor metering section, may be to protecting
Protecting system produces change, destroys the independence and tightness of protection system data.
3rd, the synchronization system of combining unit is processed the influence of ability and network pressure, and Integral synchronous limited precision prolongs
When situation it is serious, so as to cause guard delay to act.
The content of the invention
It is an object of the invention to provide a kind of special combining unit of digital transforming plant protecting, special combining unit is protected,
It is exactly the physical equipment of the separated links between electronic mutual inductor to protection device, changes existing digital transformer substation and protect
The data link topological structure of protecting system, solve it is traditional protect data accuracy it is not high, it is random big and not independent the problems such as.
To achieve these goals, the present invention provides a kind of special combining unit of digital transforming plant protecting, combining unit
Including receiver, switch input plug-in unit, protection processor card and power insert, it is characterised in that：Described merging
The receiver of unit is connected with field signal acquisition system；Switch input plug-in unit is connected with switch input signal, protects
Processor card respectively with receiver and switch input plug-in unit be connected, power insert respectively with receiver, open
Close input plug-in unit and protection processor card connection.
Described field signal acquisition system includes voltage acquisition sensor and current acquisition sensor.
Described processor card is provided with fiber optic Ethernet interface and electric Ethernet RJ45 interfaces.
Described receiver is provided with 9 signalling channels.
Described combining unit also includes spare extension mouthful.
Compared with the prior art, the special combining unit of protection proposed by the present invention, is exactly from electronic mutual inductor to protection
The physical equipment of the separated links between device, changes the data link topology knot of existing digital transforming plant protecting system
Structure.
After electronic mutual inductor senses electric current and voltage on electric power networks, special collecting unit treatment in situ number is used
According to sampling, function of the angle than difference correction is completed, be then directly sent to the special combining unit of protection through optical cable, finally protected special
Combining unit provides independent protection special signal and delivers to protection device, is achieved in data no longer by existing combining unit,
Data-Link independence, it is ensured that protect closure, independence and the digitlization of data.Special combining unit is protected to meet multiple intervals
Current and voltage data is gathered, while realizing the hardware independence of each blank signal, it is easy to safeguard；Special collecting unit is protected to possess
Data calibration ability, eliminates the possibility of later stage artificial modification data；The independence for meeting protection data acquisition can improve guarantor again
Protect the accuracy of data acquisition, it is ensured that the timely correct operation of protection device, and accomplish that protection is separated with electric energy acquisition, convenient protection
Maintenance and test of the department to the protection system of digital transformer substation.
Brief description of the drawings
Fig. 1 is using the digital transforming plant protecting system structure diagram of existing combining unit；
Fig. 2 is using digital transforming plant protecting system structure diagram of the invention；
Fig. 3 is the structural representation of embodiment of the present invention panel.
Specific embodiment
The preferred embodiment that the invention will now be described in detail with reference to the accompanying drawings.
As shown in Figure 1, Figure 2 and Figure 3, it is single that the present embodiment provides a kind of special merging of digital transforming plant protecting to embodiment
Unit, there is provided independent protection special signal is to protection device, including three groups of receivers, switches are input at plug-in unit and protections
Reason device plug-in unit, and power insert and standby plug-in unit, every group of protection processor card be provided with fiber optic Ethernet interface and electrically with
RJ45 interfaces are netted very much, standby plug-in unit as needed select by dilatation.
Every group of receiver NO2, NO5 and NO8 are respectively connected to the current and voltage signals input at interval, every group of letter
Number input plug-in unit be provided with 9 passages；Every group of switch input plug-in unit NO3, NO6 and NO9 receive position of the switch input contact, meet
The input that substation operation mode changes；Every group of protection processor card NO4, NO7 and NO10 receive receiver respectively
Output independent protective special signal, independent re-synchronization carried out to protection special signal, data packing becomes IEC61850
Reference format signal, protection device is forwarded to by RJ45 interfaces.
The special combining unit of protection that the present embodiment is proposed：On the one hand, digitizing technique is employed, optical cable transmission is reduced
The error loss of transmission channel；On the other hand, special collecting unit is devised, gathered data carries out angle and adjusted than difference simultaneously,
Strengthen the computing capability of current collecting unit, the combining unit partial function in present mode has been issued again, meet independent protective
The requirement of system acquisition.The special combining unit of the protection ensure that the independence of protection system, as electricity in independent protective system
Bridge of the minor transformer data to electronic ammeter；Simultaneously as protection processor card hardware alignment processing ability is improved,
Protection act speed, without resampling, can be improved with precise synchronization different pieces of information source data.
It is exactly to change data sharing in existing digital transformer substation that the present embodiment is actual, and multiple approach equipment can change original
The present situation of the Data-Link of beginning data.The protection Dynamic data exchange of protection system forms independent data link in shared network, changes existing
The Data-Link topological structure of some digital transforming plant protecting systems, so as to solve the independent guarantor during digital transformer substation is built
Forwarding problems in the data set of protecting system design.By after a number of application in Intelligent transformer station, hence it is evident that improve and protect
Protection unit action accuracy and speed, enhance the independence and reliability of protection data acquisition, are easy to operations staff to manage.
For significant contribution is made in digital transformer substation construction.
Claims (5)
1. the special combining unit of a kind of digital transforming plant protecting, combining unit include receiver, switch input plug-in unit,
Protection processor card and power insert, it is characterised in that：The receiver of described combining unit is adopted with on-site signal
Collecting system is connected；Switch input plug-in unit be connected with switch input signal, protect processor card respectively with receiver and
Switch input plug-in unit connection, power insert connects with receiver, switch input plug-in unit and protection processor card respectively
Connect.
2. the special combining unit of a kind of digital transforming plant protecting according to claim 1, it is characterised in that：Described shows
Field signal acquisition system includes voltage acquisition sensor and current acquisition sensor.
3. the special combining unit of a kind of digital transforming plant protecting according to claim 1, it is characterised in that：Described place
Reason device plug-in unit is provided with fiber optic Ethernet interface and electric Ethernet RJ45 interfaces.
4. the special combining unit of a kind of digital transforming plant protecting according to claim 1, it is characterised in that：Described letter
Number input plug-in unit be provided with 9 signalling channels.
5. the special combining unit of a kind of digital transforming plant protecting according to claim 1, it is characterised in that：Described conjunction
And unit also includes spare extension mouthful.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195683.4A CN106849025A (en) | 2017-03-29 | 2017-03-29 | A kind of special combining unit of digital transforming plant protecting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710195683.4A CN106849025A (en) | 2017-03-29 | 2017-03-29 | A kind of special combining unit of digital transforming plant protecting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106849025A true CN106849025A (en) | 2017-06-13 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710195683.4A Pending CN106849025A (en) | 2017-03-29 | 2017-03-29 | A kind of special combining unit of digital transforming plant protecting |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766555A (en) * | 2020-05-09 | 2020-10-13 | 浙江武义电气安装工程有限公司 | Data synchronization method for distribution network CT error checking process |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203929884U (en) * | 2014-07-01 | 2014-11-05 | 贵州电力试验研究院 | Digital transformer substation measures special-purpose merge cells |
-
2017
- 2017-03-29 CN CN201710195683.4A patent/CN106849025A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203929884U (en) * | 2014-07-01 | 2014-11-05 | 贵州电力试验研究院 | Digital transformer substation measures special-purpose merge cells |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111766555A (en) * | 2020-05-09 | 2020-10-13 | 浙江武义电气安装工程有限公司 | Data synchronization method for distribution network CT error checking process |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170613 |
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| RJ01 | Rejection of invention patent application after publication |