CN205992802U - The 3 of intelligent substation take 2 blocking devices - Google Patents
The 3 of intelligent substation take 2 blocking devices Download PDFInfo
- Publication number
- CN205992802U CN205992802U CN201621031944.6U CN201621031944U CN205992802U CN 205992802 U CN205992802 U CN 205992802U CN 201621031944 U CN201621031944 U CN 201621031944U CN 205992802 U CN205992802 U CN 205992802U
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- bus
- thyristor
- nand gate
- service entrance
- gate element
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
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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
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/16—Electric power substations
Abstract
The utility model discloses the 3 of a kind of intelligent substation take 2 blocking devices, this blocking device includes：First, second, and third bus, introduces the switching value of the normally opened auxiliary contact of the first service entrance switch, the second service entrance switch and bus connection switch respectively；First, second, and third thyristor, each concatenates to this switch closing circuit；And first, second, and third NAND gate element, wherein, two inputs of the first NAND gate element connect second, third bus respectively, outfan connects the control pole of the first thyristor, two inputs of the second NAND gate element connect the first, the 3rd bus respectively, outfan connects the control pole of the second thyristor, and two inputs of the 3rd NAND gate element connect first, second bus respectively, outfan connects the control pole of the 3rd thyristor.This utility model passes through simple transformation each switch intelligent terminal's closing circuit and introduces logic judging circuit, meets the 3 of intelligent substation construction and takes 2 lockings to require.
Description
Technical field
This utility model is related to the 3 of a kind of intelligent substation and takes 2 blocking devices.
Background technology
At present, we, when designed by 10kV distribution opening and closing, generally can require the two-way incoming power of this switching station to hold
Close and at most can only close two and bus connection switch between, that is, when this 3 switches have had two switches to be in "on" position, the 3rd
Individual switch does not allow for closing a floodgate, even if closed a floodgate should not close yet, here it is our usually said " 3 take 2 " lockings.
We are the normally closed auxiliary contacts introducing two other switch in the shutting-brake control loop switching at each at ordinary times,
Access shutting-brake control loop after parallel connection, to realize the function of " 3 take 2 " locking.
Existing " 3 take 2 " lock-out scheme is by transformer station's (or switching station, switchyard etc.) as shown in Figure 1, in this opening and closing
In 1# service entrance switch 11 ' shutting-brake control loop in addition introduce 2# service entrance switch 13 ' and 12 ' two switches of bus connection switch
Normally closed auxiliary contact, and the shutting-brake control loop of this 1# service entrance switch will be accessed after this two auxiliary contact parallel connections, play locking
The effect closed a floodgate.
Sometimes also an independent external electrical can each be used using Liang Ge switching station as shown in Figure 2 in practical work
Source, is electrically connected between Liang Ge switching station, that is, " hand in hand " mode being commonly called as.Supplier of electricity for this " hand in hand "
Formula, we can be according to running needs, both can be to 1#, 2# service entrance switch 11 ', 13 ' in this switching station plus bus connection switch 12 '
Carry out " 3 take 2 " locking it is also possible to two separate external power source be added with arbitrary 2# service entrance switch carry out " 3 take 2 " locking.
Existing " 3 take 2 " lock-out scheme has been able to realize corresponding locking purpose, and method is simple, and cost is relatively low, but
This method adds corresponding auxiliary contact after needing to disconnect a part for former control loop, needs former control loop is carried out
Change, the propulsion built with state's net intelligent substation, the method for this structure by changing former control loop can not
Can be suitable for, because intelligent station all does in various devices all of secondary circuit, in transformer station only again
Need to be attached between each device, the loop within device, all cannot change including control loop.
At present, the factory commercial city of each device is to produce according to the standard of oneself, does not comprise " 3 take 2 " locking side
Case, requires for " 3 take 2 " locking, needs producer to discuss interim increase hardware-in-the-loop, so, production firm needs for certain
The design of engineering its circuit board of Iterim Change, so not only increases the development cost of producer and also results in production cycle increase, because
This is necessary to provide a kind of new 3 to take 2 lock-out scheme, to adapt to the requirement of intelligent substation.
Utility model content
The purpose of this utility model is to provide the 3 of a kind of intelligent substation to take 2 blocking devices, with intelligent substation
" 3 take 2 " closedown mode is realized under application scenario.
For this reason, this utility model provides the 3 of a kind of intelligent substation takes 2 blocking devices, including：First bus, second
Bus and the 3rd bus, wherein, the first bus introduces the switching value of the normally opened auxiliary contact of the first service entrance switch, and the second bus is drawn
Enter the switching value of the normally opened auxiliary contact of the second service entrance switch, the 3rd bus introduces the switch of the normally opened auxiliary contact of bus connection switch
Amount；First thyristor, the second thyristor and the 3rd thyristor, wherein, the first thyristor is used for concatenating
To the first service entrance switch closing circuit；Second thyristor is used for concatenation to the second service entrance switch closing circuit, and the 3rd is controlled
Silicon cell is used for concatenation to bus connection switch closing circuit；And the first NAND gate element, the second NAND gate element and the 3rd with non-
Gating element, wherein, two inputs of the first NAND gate element connect the second bus respectively and the 3rd bus, outfan connect first
The control pole of thyristor, two inputs of the second NAND gate element connect the first bus and the 3rd bus, outfan respectively
Connect the control pole of the second thyristor, two inputs of the 3rd NAND gate element connect the first bus and second total respectively
Line, outfan connect the control pole of the 3rd thyristor.
Further, the switching signal of the normally opened auxiliary contact of above-mentioned first service entrance switch is belonging to the first service entrance switch
Intelligent terminal introduces the first bus after analog digital conversion, and the switching signal of the normally opened auxiliary contact of the second service entrance switch is by second
Intelligent terminal belonging to service entrance switch introduces the second bus, the switch of the normally opened auxiliary contact of bus switch after analog digital conversion
Intelligent terminal belonging to bus switch for the signal introduces the 3rd bus after digital-to-analogue conversion.
Further, the 3 of above-mentioned intelligent substation take 2 blocking devices also to include：4th thyristor, the 5th controllable silicon
Element and the 6th thyristor, wherein, the 4th thyristor is serially connected between the first bus and status, the 5th controllable silicon unit
Part is serially connected between the second bus and status, and the 6th thyristor is serially connected between the 3rd bus and status, and wherein, the 4th can
The control pole of the control pole, the control pole of the 5th thyristor and the 6th thyristor of control silicon cell is in parallel and cancels with total
Power supply selectivity connects.
Further, the 3 of above-mentioned intelligent substation take 2 blocking devices also to include pcb board, wherein, the first bus, second total
Line, the 3rd bus, the first thyristor, the second thyristor, the 3rd thyristor, the first NAND gate element, second
NAND gate element, the 3rd NAND gate element are arranged on pcb board.
Further, above-mentioned 3 take 2 blocking devices also to include pcb board, wherein, the first bus, the second bus, the 3rd bus,
First NAND gate element, the second NAND gate element, the 3rd NAND gate element are arranged on pcb board, the first thyristor setting
On the first service entrance switch closing circuit, the second thyristor is arranged on the second service entrance switch closing circuit, and the 3rd is controlled
Silicon cell is arranged on bus connection switch closing circuit.
This utility model passes through the closing circuit of simple transformation each function terminal, is allowed to reserved concatenation socket, solves intelligence
Can transformer station build in 3 difficult problems taking 2 blocking functions are realized from hardware so that this common 3 take 2 closedown modes to adapt to
The requirement that state's net intelligent substation is built, had not only met the requirement of operation but also had been suitable for the needs with intelligent station, be entering of intelligent station
One step is promoted and has been established technical foundation.
In addition to objects, features and advantages described above, this utility model also has other purposes, feature and excellent
Point.Below with reference to figure, this utility model is described in further detail.
Brief description
The Figure of description constituting the part of the application is used for providing further understanding to of the present utility model, this practicality
New schematic description and description is used for explaining this utility model, does not constitute to improper restriction of the present utility model.
In the accompanying drawings：
Fig. 1 be prior art application 3 take 2 lock-out scheme a kind of transformer station schematic diagram；
Fig. 2 be prior art application 3 take 2 lock-out scheme another kind of transformer station schematic diagram；
Fig. 3 is 3 of the intelligent substation according to this utility model one embodiment to take the overall structure of 2 blocking devices to illustrate
Figure；
Fig. 4 is the inside control of the first service entrance switch intelligent terminal of the intelligent substation according to this utility model one embodiment
The circuit diagram of circuit processed；
Fig. 5 is 3 of the intelligent substation according to this utility model one embodiment to take the internal structure of 2 blocking devices to illustrate
Figure；
Fig. 6 is 3 of the intelligent substation according to another embodiment of this utility model to take the overall structure of 2 blocking devices to illustrate
Figure；
Fig. 7 be the intelligent substation according to another embodiment of this utility model the first service entrance switch intelligent terminal in
The circuit diagram of portion's control circuit；And
Fig. 8 is 3 of the intelligent substation according to another embodiment of this utility model to take the internal structure of 2 blocking devices to illustrate
Figure.
Specific embodiment
It should be noted that in the case of not conflicting, the embodiment in the application and the feature in embodiment can phases
Mutually combine.To describe this utility model below with reference to the accompanying drawings and in conjunction with the embodiments in detail.
Fig. 3 to Fig. 8 shows according to some embodiments of the present utility model.
3 of intelligent substation according to this utility model one side take 2 blocking methods, comprise the following steps：
Step one：As shown in figure 3, the normally opened auxiliary contact by the first service entrance switch, the second service entrance switch and bus-tie circuit breaker
101st, 201,301 it is respectively connected to each affiliated intelligent terminal 100,200,300, more each normally opened auxiliary is taken out by each intelligent terminal
The switching value of contact is to 3 the first bus 11, the second bus 12 and the 3rd buses 13 taking 2 blocking devices 10.Wherein, normally opened auxiliary
Contact 101,201,301 through respective intelligent terminal 100,200, the digital-to-analogue conversion of 300 digital-to-analogue conversions/photoelectric isolation module,
It is respectively connected to the first bus 11, the second bus 42 and the 3rd bus 43 after Phototube Coupling；
Step 2：As shown in figure 4, the first service entrance switch closing circuit 110 of each intelligent terminal, the second service entrance switch are closed
Lock loop, bus connection switch closing circuit disconnect to introduce concatenation socket 111.Wherein, the second service entrance switch closing circuit and bus
Switch closing circuit is not shown, but the mode of its introducing concatenation socket is identical with the first service entrance switch closing circuit 110；And
Step 3：As shown in figure 5,3 the first thyristors 14 taking 2 blocking devices 10 are concatenated to the first service entrance switch
The concatenation socket 111 of closing circuit, the second thyristor 15 is concatenated to the concatenation socket of the second service entrance switch closing circuit,
3rd thyristor 16 is concatenated to the concatenation socket of the 3rd service entrance switch closing circuit.Wherein, first, second, third can
Control silicon cell draw plug 10a, 10b, 10c are pluggable cooperation with concatenating socket 111 cooperation, so easy to connect.
Wherein, the 3 of above-mentioned intelligent substation take 2 blocking devices to include：First bus 11, the second bus 12 and the 3rd bus
13, the first thyristor 14, the second thyristor 15 and the 3rd thyristor 16, and the first NAND gate element 17,
Second NAND gate element 18 and the 3rd NAND gate element 19.
Wherein, the first bus 11 introduces the switching value of the normally opened auxiliary contact 101 of the first service entrance switch, and the second bus 12 is drawn
Enter the switching value of the normally opened auxiliary contact 201 of the second service entrance switch, the 3rd bus 13 introduces the normally opened auxiliary contact of bus connection switch
301 switching value；First thyristor 14 is used for concatenation to the first service entrance switch closing circuit 110；Second thyristor
15 are used for concatenation to the second service entrance switch closing circuit (not shown), and the 3rd thyristor 16 is used for concatenation to mother and opens
Close closing circuit (not shown)；Two inputs of the first NAND gate element 17 connect the second bus 12 and the 3rd bus respectively
13rd, outfan connects the control pole of the first thyristor 14, and two inputs of the second NAND gate element 18 connect first respectively
Bus 11 and the control pole of the 3rd bus 13, outfan connection the second thyristor 15, the two of the 3rd NAND gate element 19 are defeated
Enter end and connect the first bus 11 and the control pole of the second bus 12, outfan connection the 3rd thyristor 16 respectively.
According to blocking method of the present utility model, each closing circuit passes through default concatenation socket, facilitates follow-up 3 to take 2 to close
The connection of locking device is installed, in the structure of the intelligent substation of prior art it is impossible in intelligent terminal with regard to each switch element
Closing circuit realize 3 from hardware and take 2 blocking functions, this utility model is returned by the combined floodgate of simple transformation each function terminal
Road, is allowed to reserved concatenation socket, solves during intelligent substation builds and realize 3 difficult problems taking 2 blocking functions from hardware.
In one embodiment, concatenation socket is normally closed socket, and its benefit is that intelligent terminal manufacturer only need to pay close attention to itself,
When no 3 take 2 blocking device, each closing circuit remains conducting, need not pay close attention to follow-up 3 and take 2 blocking devices, when follow-up 3
It is only necessary to insertion serial interfaces can achieve concatenation when taking 2 blocking devices to use, implement 3 so on intelligent terminal and take 2 locking sides
Case is simple and reliable.In addition, to control the break-make of closing circuit using thyristor, small volume, the quick advantage of reaction, it is suitable for
3 take the small size of 2 blocking devices to encapsulate.
Preferably, the 3 of above-mentioned intelligent substation take 2 blocking devices also to include pcb board, wherein, the first bus, second total
Line, the 3rd bus, the first thyristor, the second thyristor, the 3rd thyristor, the first NAND gate element, second
NAND gate element, the 3rd NAND gate element are arranged on pcb board.
In the present embodiment, the first service entrance switch closing circuit, the second service entrance switch closing circuit, bus connection switch close a floodgate back
Road disconnects and reserved concatenation socket in advance, so that with the first thyristor, the second thyristor, the 3rd thyristor even
The plug connecing concatenates to each closing circuit.
In a preferred embodiment, the 3 of above-mentioned intelligent substation take 2 blocking devices also to include：4th thyristor 21,
Five thyristors 22 and the 6th thyristor 23, wherein, the 4th thyristor 21 is serially connected in the first bus and ground potential
Between, the 5th thyristor 22 is serially connected between the second bus and ground potential, and it is total that the 6th thyristor 23 is serially connected in the 3rd
Between line and ground potential, wherein, the control pole of the 4th thyristor, the control pole of the 5th thyristor and the 6th controllable silicon
The control pole of element is simultaneously unified into public control pole 24, and this public control pole 24 is always cancelled positive source selectivity with a distant place and is connected.
By said structure scheme, when the control pole of the four, the 5th and the 6th thyristor is connected with total power supply of cancelling
When, it is in ground potential that the controllable silicon of all conductings all forces its bus potential being located to be in electronegative potential, so no matter at switch
In which kind of state (closing a floodgate or separating brake), one or two switch in addition all can normally close a floodgate, that is, serve the work of lock release
With.
The structural principle of 2 blocking devices is taken to be described in detail by utility model people to 3 with reference to Fig. 3 to Fig. 5 below.
The 3 of this preferred embodiment take 2 blocking devices to be made up of 3 NAND gate elements, 3 buses and 6 controllable silicons, each unit
It is attached according to the connected mode shown in Fig. 4-6 between part.Wherein I bus is connected with the intelligent terminal of 1# service entrance switch, bears
The switching value of the 1# service entrance switch of collection is transported in I bus duty, and corresponding switching value is conveyed to 2#, 3# NAND gate unit
Part, judges to select for it；II bus is connected with the intelligent terminal of 2# service entrance switch, is responsible for the switch of the 2# service entrance switch of collection
Amount is transported in II bus, and corresponding switching value is conveyed to 1#, 3# NAND gate element, judges to select for it；III bus with
The intelligent terminal of bus connection switch connects, and is responsible for the switching value of the bus connection switch of collection is transported in III bus, and will be corresponding
Switching value is conveyed to 1#, 2# NAND gate element, judges to select for it.
According to the judgement of NAND gate element, NAND gate exports high level and low level respectively, just give during output high level 1#,
2# and 3# silicon controlled control pole provides control voltage, and now controllable silicon just can turn on, and former loop possesses combined floodgate condition, otherwise
Controllable silicon is not turned on, and does not possess combined floodgate condition, thus realizing the purpose of " 3 take 2 lockings ".
Wherein, 1#, 2# and 3# controllable silicon shutting-brake control loop phase with 1#, 2# and the intelligent terminal of bus connection switch respectively
Even.Here needs the producer of intelligent terminal to cut-off the shutting-brake control loop of intelligent terminal in given place in advance and draw dress
Put, so that this utility model device is docked with corresponding intelligent terminal.By corresponding for this utility model device controllable silicon during docking
Interface is connected with the corresponding interface that intelligent terminal reserves, and reaches the purpose not only recovered former closing circuit but also realize " 3 take 2 lockings ".
4#, 5# and 6# controllable silicon is used for realizing releasing " 3 take 2 lockings ".With ground phase after three silicon controlled negative electrode parallel connections
Even, anode is connected with three buses respectively, and control pole parallel connection is followed by the positive pole that a distant place controls power supply.If now three switches are all
Do not close a floodgate, three buses are low level, and controllable silicon is not turned on, such three NAND gate output is high level, so 1#,
2# and 3# controllable silicon is both turned on, and possesses combined floodgate condition；If having any one or two switches closing a floodgate, now 4#, 5# and 6#
In controllable silicon at least one or two conducting, because all silicon controlled negative electrodes all connect with ground, then all conductings can
It is in ground potential that control silicon all forces its bus potential being located to be in electronegative potential, so no matter switchs and is in which kind of state (is closed a floodgate
Or separating brake), one or two switch in addition all can normally close a floodgate, that is, serve the effect of lock release.
In conjunction with reference to Fig. 6 to Fig. 8,3 of the intelligent substation according to another aspect of the present utility model takes 2 blocking methods,
Comprise the following steps：
As shown in fig. 6, by the normally opened auxiliary contact 101 of the first service entrance switch, the second service entrance switch and bus-tie circuit breaker, 201,
301 are respectively connected to each affiliated intelligent terminal 100,200,300, then take out each normally opened auxiliary contact by respective intelligent terminal
Switching value to 3 the first bus 11, the second bus 12 and the 3rd buses 13 taking 2 blocking devices；
As shown in fig. 7, by the first service entrance switch closing circuit 100 of each intelligent terminal, the second service entrance switch closing circuit,
Bus connection switch closing circuit disconnects and concatenates the first thyristor 14, the second thyristor and the 3rd thyristor (figure
Not shown in)；And
As shown in figure 8, by the outfan 10d of 3 the first NAND gate elements 17 taking 2 blocking devices, the second NAND gate element
The 18 outfan 10e and outfan 10f of the 3rd NAND gate element 19 is electrically connected the control pole of the first thyristor 14
141st, the control pole (not shown) of the control pole of the second thyristor and the 3rd thyristor.
This utility model passes through to close in the first service entrance switch closing circuit, the second service entrance switch closing circuit and bus connection switch
Concatenation first, second, and third thyristor setting is forced on lock loop, then draws first, second, third thyristor
Control pole connect and 3 take 2 blocking devices, realize 3 and take 2 blocking functions, thus taking 2 lockings to require to keep with the 3 of current transformer station
Consistent it is ensured that power supply safety and reliability.
Above-mentioned 3 take in 2 blocking methods 3 to take 2 blocking devices to be with the blocking device difference shown in Fig. 3 to Fig. 5：Its
In, the first bus 11, the second bus 12, the 3rd bus 13, the first NAND gate element 17, the second NAND gate element the 19, the 3rd with
Non- gating element 19 is arranged on pcb board, and the first thyristor 14 is arranged on the first service entrance switch closing circuit 110, and second
Thyristor is arranged on the second service entrance switch closing circuit, and the 3rd thyristor is arranged on bus connection switch closing circuit
On.
Take in 2 blocking devices the 3 of the present embodiment, the first service entrance switch closing circuit, the second service entrance switch closing circuit,
Bus connection switch closing circuit concatenates thyristor in advance, and the control pole of these thyristors is taken 2 blocking devices to be electrically connected with 3
Connect, you can realize 3 and take 2 lock-in controls.
The foregoing is only preferred embodiment of the present utility model, be not limited to this utility model, for this
For the technical staff in field, this utility model can have various modifications and variations.All of the present utility model spirit and principle
Within, any modification, equivalent substitution and improvement made etc., should be included within protection domain of the present utility model.
Claims (5)
1. the 3 of a kind of intelligent substation take 2 blocking devices it is characterised in that including：
First bus, the second bus and the 3rd bus, wherein, the normally opened auxiliary that described first bus introduces the first service entrance switch connects
The switching value of point, described second bus introduces the switching value of the normally opened auxiliary contact of the second service entrance switch, and described 3rd bus is drawn
Enter the switching value of the normally opened auxiliary contact of bus connection switch；
First thyristor, the second thyristor and the 3rd thyristor, wherein, described first thyristor is used for
Concatenate to the first service entrance switch closing circuit；Described second thyristor is used for concatenation to the second service entrance switch closing circuit,
Described 3rd thyristor is used for concatenation to bus connection switch closing circuit；And
First NAND gate element, the second NAND gate element and the 3rd NAND gate element, wherein, the two of described first NAND gate element
Input connects the second bus and the 3rd bus respectively, outfan connects the control pole of described first thyristor, and described the
Two inputs of two NAND gate elements connect the first bus respectively and the 3rd bus, outfan connect described second thyristor
Control pole, two inputs of described 3rd NAND gate element connect the first bus respectively and the second bus, outfan connect institute
State the control pole of the 3rd thyristor.
2. the 3 of intelligent substation according to claim 1 take 2 blocking devices it is characterised in that described first service entrance switch
The intelligent terminal belonging to the first service entrance switch for the switching signal of normally opened auxiliary contact introduce described after analog digital conversion
One bus, the switching signal of the normally opened auxiliary contact of the described second service entrance switch intelligent terminal's warp belonging to the second service entrance switch
Described second bus is introduced, the switching signal of the normally opened auxiliary contact of described bus switch is by bus switch institute after crossing analog digital conversion
The intelligent terminal belonging to introduces the 3rd bus after digital-to-analogue conversion.
3. the 3 of intelligent substation according to claim 1 take 2 blocking devices it is characterised in that also including：4th is controlled
Silicon cell, the 5th thyristor and the 6th thyristor, wherein, it is total that described 4th thyristor is serially connected in described first
Between line and status, described 5th thyristor is serially connected between described second bus and status, the 6th thyristor string
It is connected between the 3rd bus and status, wherein, the control pole of described 4th thyristor, the control pole of the 5th thyristor
Control pole parallel connection with the 6th thyristor is simultaneously connected with total power supply selectivity of cancelling.
4. the 3 of intelligent substation according to any one of claim 1 to 3 take 2 blocking devices it is characterised in that also wrapping
Include pcb board, wherein, described first bus, the second bus, the 3rd bus, the first thyristor, the second thyristor,
Three thyristors, the first NAND gate element, the second NAND gate element, the 3rd NAND gate element are arranged on described pcb board.
5. the 3 of intelligent substation according to any one of claim 1 to 3 take 2 blocking devices it is characterised in that also wrapping
Include pcb board, wherein, described first bus, the second bus, the 3rd bus, the first NAND gate element, the second NAND gate element,
Three NAND gate elements are arranged on described pcb board, and described first thyristor is arranged on described first service entrance switch and closes a floodgate back
Lu Shang, described second thyristor is arranged on described second service entrance switch closing circuit, and described 3rd thyristor sets
Put on described bus connection switch closing circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621031944.6U CN205992802U (en) | 2016-08-31 | 2016-08-31 | The 3 of intelligent substation take 2 blocking devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621031944.6U CN205992802U (en) | 2016-08-31 | 2016-08-31 | The 3 of intelligent substation take 2 blocking devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205992802U true CN205992802U (en) | 2017-03-01 |
Family
ID=58104784
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621031944.6U Active CN205992802U (en) | 2016-08-31 | 2016-08-31 | The 3 of intelligent substation take 2 blocking devices |
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| Country | Link |
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| CN (1) | CN205992802U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340961A (en) * | 2016-08-31 | 2017-01-18 | 合肥电力规划设计院 | Two-out-of-three blocking device of intelligent transformer substation and method |
-
2016
- 2016-08-31 CN CN201621031944.6U patent/CN205992802U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106340961A (en) * | 2016-08-31 | 2017-01-18 | 合肥电力规划设计院 | Two-out-of-three blocking device of intelligent transformer substation and method |
| CN106340961B (en) * | 2016-08-31 | 2018-12-28 | 合肥电力规划设计院 | The 3 of intelligent substation take 2 blocking devices and method |
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