CN207819562U - A kind of quick off-the-line protective device of looped network - Google Patents
A kind of quick off-the-line protective device of looped network Download PDFInfo
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- CN207819562U CN207819562U CN201820248149.5U CN201820248149U CN207819562U CN 207819562 U CN207819562 U CN 207819562U CN 201820248149 U CN201820248149 U CN 201820248149U CN 207819562 U CN207819562 U CN 207819562U
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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
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Abstract
The utility model is related to electric network protection device fields; disclose a kind of quick off-the-line protective device of looped network; plug-in unit is inputted including exchange, opens into plug-in unit, output plug-in unit, protection DSP plug-in units, CPU management plug-in unit and power insert; the above plug-in unit is connected by the core bus of device; wherein core bus includes power bus, analog quantity bus, data/address bus.The utility model solve the problems, such as under loop-net operation mode the main transformer backup protection non-selectivity caused by substance line protective devices tripping bypass the immediate leadership tripping, so as to cause multistation decompression, control scope of power outage, ensured the safe and stable operation of power grid.
Description
Technical field
The present invention relates to electric network protection device field, more particularly to a kind of quick off-the-line protective device of looped network.
Background technology
To meet the fast-developing demand of social economy, China's power grid scale gradually increases, voltage class constantly increases, warp
The fast development for crossing recent decades, has become one of power grid maximum, most complicated in the world, the safe and stable operation of power grid and
Power supply reliability requires higher and higher.110kV power network wirings generally take closed loop design, the mode of open loop operation, generally existing
The phenomenon that multistage statements based on collusion, power supply reliability is not high.And 220kV power supply point wretched insufficiency heavier for economically developed, supply load
Area, from the angle of economy and reliability, two sections of busbares of generally use 220kV substation 110kV through mother paired running,
The mode of 110kV circuits double loop also paired running, since 110kV system protection substanceizations configure, when 110kV circuits occur
Failure, and when corresponding protective device is because of reasons trippings such as plant failure, principle mismatch, fixed value adjusting mistakes, it would be possible to he it causes
All main transformer backup protections of 220kV substations are bypassed the immediate leadership tripping, and non-selectivity expands scope of power outage, are lost so as to cause multistation
Pressure, seriously threatens power grid security.How to overcome the problems, such as above-mentioned, is current to be badly in need of solving.
Invention content
The main object of the present invention is to propose a kind of quick off-the-line protective device of looped network, it is intended to overcome the above problem.
To achieve the above object, the quick off-the-line protective device of a kind of looped network proposed by the present invention, including exchange input plug-in unit,
It opens into plug-in unit, to output plug-in unit, protection DSP plug-in units, CPU management plug-in unit and power insert, the above plug-in unit total by the backboard of device
Line connects, and wherein core bus includes power bus, analog quantity bus, data/address bus.
Preferably, exchange input plug-in unit is for acquiring each section of busbar voltage and mother electric current, and by the simulation of acquisition
Amount is input to protection DSP plug-in units by analog quantity bus.
Preferably, described open has main transformer to jump mother and start looped network off-the-line and open to open into opening into loop-net operation circuit into plug-in unit
Enter signal and protection DSP plug-in units are passed to by backboard data/address bus after stabilization.
Preferably, the CPU management plug-in unit is used to provide the soft pressing plate definite value of man-machine interface setting loop-net operation circuit, and
Protection DSP plug-in units are passed to by backboard data/address bus.
Preferably, the protection DSP plug-in units by analog quantity bus and data/address bus receive respectively analog quantity, switching value and
The related soft pressing plate of definite value completes looped network and quickly solves the judgement of row logic, and outputs signal to and output plug-in unit.
Preferably, described to output plug-in unit by data/address bus reception come the signal of self-shield DSP plug-in units, output tripping connects
Point.
Preferably, described to open into plug-in unit setting " main transformer jumps mother and starts looped network off-the-line 1 ", " main transformer jump mother startup looped network
Off-the-line 2 " two is opened into contact, any one is opened can start looped network and quickly solve row logic into contact action；It is loop-net operation simultaneously
The hard pressing plate of circuit setting " loop-net operation " open into.
Preferably, it is described open into either one or two of plug-in unit open into contact action before have carry out stabilization processing.
Preferably, the stabilization processing is to open into delay.
Preferably, the protection DSP plug-in units acquire the voltage of two sections of busbares and the electric current of mother respectively, and acquire each line
Road " loop-net operation " is soft, hard pressing plate, when both putting into, identifies that the circuit is loop-net operation circuit, " main transformer is jumped female when receiving
Connection start looped network off-the-line 1 " or " main transformer jumps mother and starts looped network off-the-line 2 " it is any open into, while mother power direction flow direction this
Busbar then sends out the line-breaker signal of loop-net operation on tripping this busbar, row logic is quickly solved to complete looped network.
The present invention solve loop-net operation mode under the main transformer backup protection caused by substance line protective devices tripping without
Selectivity bypass the immediate leadership tripping, so as to cause multistation decompression the problem of, control scope of power outage, ensured power grid safety and stability transport
Row.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the quick off-the-line protective device hardware connection diagram of looped network of the utility model.
Fig. 2 is the typical wiring schematic diagram of 220kV substations 110kV loop-net operation systems, is with mother's I AB outlet failures
Example；
The quick off-the-line logic chart of looped network based on mother power direction when Fig. 3 is the implementation of the utility model, wherein X are mother
Line number, Y are circuit number.
The embodiments will be further described with reference to the accompanying drawings for the realization, the function and the advantages of the object of the present invention.
Specific implementation mode
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation describes, it is clear that described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Base
Embodiment in the present invention, those of ordinary skill in the art obtained without creative efforts it is all its
His embodiment, shall fall within the protection scope of the present invention.
If it is to be appreciated that related in the embodiment of the present invention directionality instruction (such as up, down, left, right, before and after ...),
Then directionality instruction be only used for explaining relative position relation under a certain particular pose (as shown in the picture) between each component,
Motion conditions etc., if the particular pose changes, directionality instruction also correspondingly changes correspondingly.
Referring to Fig.1-3, the quick off-the-line protective device of a kind of looped network proposed by the present invention, including exchange are defeated
Enter plug-in unit, opens into plug-in unit, outputs plug-in unit, protection DSP plug-in units, CPU management plug-in unit and power insert, the above plug-in unit and pass through device
Core bus connects, and wherein core bus includes power bus, analog quantity bus, data/address bus.
Preferably, exchange input plug-in unit is for acquiring each section of busbar voltage and mother electric current, and by the simulation of acquisition
Amount is input to protection DSP plug-in units by analog quantity bus.
Preferably, described open has main transformer to jump mother and start looped network off-the-line and open to open into opening into loop-net operation circuit into plug-in unit
Enter signal and protection DSP plug-in units are passed to by backboard data/address bus after stabilization.
Preferably, the CPU management plug-in unit is used to provide the soft pressing plate definite value of man-machine interface setting loop-net operation circuit, and
Protection DSP plug-in units are passed to by backboard data/address bus.
Preferably, the protection DSP plug-in units by analog quantity bus and data/address bus receive respectively analog quantity, switching value and
The related soft pressing plate of definite value completes looped network and quickly solves the judgement of row logic, and outputs signal to and output plug-in unit.
Preferably, described to output plug-in unit by data/address bus reception come the signal of self-shield DSP plug-in units, output tripping connects
Point.
Preferably, described to open into plug-in unit setting " main transformer jumps mother and starts looped network off-the-line 1 ", " main transformer jump mother startup looped network
Off-the-line 2 " two is opened into contact, any one is opened can start looped network and quickly solve row logic into contact action；It is loop-net operation simultaneously
The hard pressing plate of circuit setting " loop-net operation " open into.
Preferably, it is described open into either one or two of plug-in unit open into contact action before have carry out stabilization processing.
Preferably, the stabilization processing is to open into delay.
Preferably, the protection DSP plug-in units acquire the voltage of two sections of busbares and the electric current of mother respectively, and acquire each line
Road " loop-net operation " is soft, hard pressing plate, when both putting into, identifies that the circuit is loop-net operation circuit, " main transformer is jumped female when receiving
Connection start looped network off-the-line 1 " or " main transformer jumps mother and starts looped network off-the-line 2 " it is any open into, while mother power direction flow direction this
Busbar then sends out the line-breaker signal of loop-net operation on tripping this busbar, row logic is quickly solved to complete looped network.
In embodiments of the present invention, the 110kV side ring network operations of 220kV substations A, the stations offside B and C are used for the present apparatus
Station is for the network system of load station realizes the quick off-the-line of looped network, to include the following steps：
(1) two sections of busbar voltages and mother electric current are acquired respectively
The mode of connection for having two sections of busbares and mother for double-bus or single mother partition, respectively by the three-phase electricity of I mothers
Press phasorThe three-phase voltage phasor of II mothersAnd the three-phase current phase of mother
AmountIt is linked into the exchange plug-in unit of the quick off-the-line protective device of looped network.
(2) contact of busbar breaker is jumped in the back-up protection action for acquiring two main transformers respectively
The standby phase overcurrent and zero-sequencedirectional protection of #1 main transformers and #2 main transformers are acted to the contact for jumping busbar breaker, respectively
Be linked into the quick off-the-line protective device of looped network opens " main transformer is jumped mother startup looped network off-the-line and opened into 1 " into plug-in unit, " main transformer jump mother
Connection starts looped network off-the-line and opens into 2 ".
(3) loop-net operation pressing plate is put into, identifies loop-net operation circuit
Put into " loop-net operation " soft pressing plate by the man-machine interface of the quick off-the-line protective device of looped network, and put into open into
Corresponding " loop-net operation " the hard pressing plate of plug-in unit；Specifically, the AC I lines and AC II lines of loop-net operation have corresponding " looped network fortune
Soft, the hard pressing plate of row ", when " loop-net operation " of AC I lines is soft, hard pressing plate is put into, protection DSP plug-in units identification AC I lines are I female
Loop-net operation circuit；When " loop-net operation " of AC II lines is soft, hard pressing plate is put into, identification AC II lines are the ring of II mothers
Network operation circuit.
(4) looped network quick off-the-line protective device, which receives main transformer backup protection action and jumps busbar breaker, opens into same fashionable dress
Set and judge that mother power direction flows to this busbar, then on this busbar of tripping loop-net operation circuit, realize the quick off-the-line of looped network.
As shown in Fig. 2, when the AB outlets of I mother are broken down, and the line protective devices that its substanceization configures because of device therefore
When the reasons tripping such as barrier, principle mismatch, fixed value adjusting mistake, the standby phase overcurrent or zero-sequencedirectional protection of #1 main transformers and #2 main transformers
Will bypass the immediate leadership action, jump busbar breaker CB3, and after busbar breaker CB3 trippings, #1 main transformers continue to experience failure, when 2
Limit tripping CB1 breakers, if being not provided with the quick off-the-line protective device of looped network, #2 main transformers also will by AC I lines, AC II lines and
The looped network that the stations C mother CB4 is formed continues to experience failure, and 2 time limits jumped tripping CB2 breakers, so as to cause our station 110kV systems
And the stations B, the equal decompression in the stations C of offside.
After being configured with the quick off-the-line protective device of looped network, as shown in figure 3, in embodiment, X represents I, and Y represents AC I, main
Become tripping start looped network off-the-line 1, transformer tripping start looped network off-the-line 2 open contact action after, protect the looped network of DSP plug-in units fast
Speed solution row logic quickly starts, at this time according to mother's I three-phase voltage phasor of acquisitionMother's II three-phase voltage
PhasorAnd mother three-phase current phasorMother power direction is calculated to flow to for mother II
I is female, then protects the I female rings net of DSP plug-in units quickly to solve row logic and act at once, the AC I line open circuits of loop-net operation on tripping mother I
Device CB5 ensures #2 main transformers and mother's II normal power supply to realize the quick off-the-line of looped network.
The quick off-the-line protective device of looped network of the utility model, by acquiring busbar voltage and mother Current calculation mother work(
Rate direction, at the same acquire main transformer backup protection action jump busbar breaker open into and each circuit " loop-net operation " is soft, hard pressure
Board status quickly judges that the loop-net operation circuit of guilty culprit busbar, tripping correspond to loop-net operation line-breaker on busbar,
It realizes the quick off-the-line under looped network, solves under loop-net operation mode caused by substance line protective devices tripping after main transformer
Standby protection non-selectivity bypass the immediate leadership tripping, so as to cause multistation decompression the problem of, control scope of power outage, ensured the safety of power grid surely
Fixed operation, has a good application prospect.
The basic principles and main features and advantage of the utility model have been shown and described above.The technical staff of the industry
It should be appreciated that the present utility model is not limited to the above embodiments, the above embodiments and description only describe this
The principle of utility model, on the premise of not departing from the spirit and scope of the utility model, the utility model also has various change
And improvement, these various changes and improvements fall within the scope of the claimed invention.The utility model requires protection scope
It is defined by the appending claims and its equivalent thereof.
Claims (10)
1. a kind of quick off-the-line protective device of looped network, which is characterized in that including exchange input plug-in unit, open into plug-in unit, output plug-in unit,
DSP plug-in units, CPU management plug-in unit and power insert, the above plug-in unit is protected to be connected by the core bus of device, wherein core bus
Including power bus, analog quantity bus, data/address bus.
2. the quick off-the-line protective device of looped network as described in claim 1, which is characterized in that the exchange input plug-in unit is for adopting
Collect each section of busbar voltage and mother electric current, and the analog quantity of acquisition is input to protection DSP plug-in units by analog quantity bus.
3. the quick off-the-line protective device of looped network as described in claim 1, which is characterized in that described open has main transformer to jump mother into plug-in unit
Connection, which starts looped network off-the-line, to be opened and is opened into loop-net operation circuit into opening signal and pass to guarantor by backboard data/address bus after stabilization
Protect DSP plug-in units.
4. the quick off-the-line protective device of looped network as described in claim 1, which is characterized in that the CPU management plug-in unit is for carrying
The soft pressing plate definite value of loop-net operation circuit is set for man-machine interface, and protection DSP plug-in units are passed to by backboard data/address bus.
5. the quick off-the-line protective device of looped network as described in claim 1, which is characterized in that the protection DSP plug-in units pass through mould
Analog quantity bus receives analog quantity, switching value and the soft pressing plate of related definite value to data/address bus respectively, completes looped network and quickly solves row logic
Judgement, and output signal to and output plug-in unit.
6. the quick off-the-line protective device of looped network as described in claim 1, which is characterized in that described to output plug-in unit total by data
Line receives the signal for carrying out self-shield DSP plug-in units, output tripping contact.
7. the quick off-the-line protective device of looped network as described in claim 1, which is characterized in that " main transformer is arranged into plug-in unit in described open
Jump that mother starts looped network off-the-line 1 ", " main transformer jumps mother and starts looped network off-the-line 2 " two opens into contact, any one is opened acts into contact
Looped network can be started and quickly solve row logic；Simultaneously for loop-net operation circuit be arranged " loop-net operation " hard pressing plate open into.
8. the quick off-the-line protective device of looped network as claimed in claim 7, which is characterized in that described open is opened into either one or two of plug-in unit
Have before entering contact action and carries out stabilization processing.
9. the quick off-the-line protective device of looped network as claimed in claim 8, which is characterized in that stabilization processing is opens into prolonging
When.
10. the quick off-the-line protective device of looped network as described in claim 1, which is characterized in that the protection DSP plug-in units are adopted respectively
The voltage of two sections of busbares of collection and the electric current of mother, and acquire that each circuit " loop-net operation " is soft, hard pressing plate, when both putting into
When, identify that the circuit is loop-net operation circuit, when receiving " main transformer jumps mother and starts looped network off-the-line 1 " or " main transformer is jumped mother and opened
Rotating ring net off-the-line 2 " is any to be opened into while mother power direction flows to this busbar, then sends out loop-net operation on tripping this busbar
Line-breaker signal quickly solves row logic to complete looped network.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820248149.5U CN207819562U (en) | 2018-02-09 | 2018-02-09 | A kind of quick off-the-line protective device of looped network |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820248149.5U CN207819562U (en) | 2018-02-09 | 2018-02-09 | A kind of quick off-the-line protective device of looped network |
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| CN207819562U true CN207819562U (en) | 2018-09-04 |
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| CN201820248149.5U Active CN207819562U (en) | 2018-02-09 | 2018-02-09 | A kind of quick off-the-line protective device of looped network |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199484A (en) * | 2018-02-09 | 2018-06-22 | 广东电网有限责任公司揭阳供电局 | A kind of quick off-the-line method and device of looped network |
| CN110364996A (en) * | 2019-07-24 | 2019-10-22 | 国家电网有限公司 | Improve the protective device of station service power supply reliability |
| CN110460025A (en) * | 2019-08-15 | 2019-11-15 | 国网四川省电力公司宜宾供电公司 | Quick method and device thereof of unlinking |
| CN110581538A (en) * | 2019-06-24 | 2019-12-17 | 中国南方电网有限责任公司超高压输电公司梧州局 | Microcomputer protection device and method based on linear optocoupler |
| CN112186787A (en) * | 2020-10-22 | 2021-01-05 | 上海申能新动力储能研发有限公司 | Micro-grid and energy storage coordination controller |
| CN108199484B (en) * | 2018-02-09 | 2024-07-02 | 广东电网有限责任公司揭阳供电局 | Method and device for rapidly disaggregating ring network |
-
2018
- 2018-02-09 CN CN201820248149.5U patent/CN207819562U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108199484A (en) * | 2018-02-09 | 2018-06-22 | 广东电网有限责任公司揭阳供电局 | A kind of quick off-the-line method and device of looped network |
| CN108199484B (en) * | 2018-02-09 | 2024-07-02 | 广东电网有限责任公司揭阳供电局 | Method and device for rapidly disaggregating ring network |
| CN110581538A (en) * | 2019-06-24 | 2019-12-17 | 中国南方电网有限责任公司超高压输电公司梧州局 | Microcomputer protection device and method based on linear optocoupler |
| CN110581538B (en) * | 2019-06-24 | 2020-08-11 | 中国南方电网有限责任公司超高压输电公司梧州局 | Microcomputer protection device and method based on linear optocoupler |
| CN110364996A (en) * | 2019-07-24 | 2019-10-22 | 国家电网有限公司 | Improve the protective device of station service power supply reliability |
| CN110364996B (en) * | 2019-07-24 | 2021-08-20 | 国家电网有限公司 | Protection device for improving service power supply reliability |
| CN110460025A (en) * | 2019-08-15 | 2019-11-15 | 国网四川省电力公司宜宾供电公司 | Quick method and device thereof of unlinking |
| CN110460025B (en) * | 2019-08-15 | 2021-11-23 | 国网四川省电力公司宜宾供电公司 | Quick ring-opening method and device |
| CN112186787A (en) * | 2020-10-22 | 2021-01-05 | 上海申能新动力储能研发有限公司 | Micro-grid and energy storage coordination controller |
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