CN104764998B - For replacing the simulator of circuit breaker of true primary cut-out in protection test - Google Patents
For replacing the simulator of circuit breaker of true primary cut-out in protection test Download PDFInfo
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- CN104764998B CN104764998B CN201510195162.XA CN201510195162A CN104764998B CN 104764998 B CN104764998 B CN 104764998B CN 201510195162 A CN201510195162 A CN 201510195162A CN 104764998 B CN104764998 B CN 104764998B
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Abstract
The invention discloses the simulator of circuit breaker for replacing true primary cut-out in protection test, including breaker circuit, breaker circuit, which includes breaker circuit described in multiple circuit structure identicals, includes multiple circuit structure identicals extension relay circuit, breaker protection closes a floodgate and opened into access closing coil and controller combined floodgate open entry loop, closing coil is in parallel with controller combined floodgate open entry loop, breaker protection tripping operation is opened into access switching winding and controller separating brake open entry loop, switching winding is in parallel with controller separating brake open entry loop, each extension relay circuit is extended using a relay as contact, auxiliary switch contact for mimic-disconnecting switch, division position is carried out to output；The branch wire time of No. 6 mimic-disconnecting switches of the present invention can be set as needed, and the circuit-breaker switching on-off time precision simulated is high.
Description
Technical field
It is more particularly to a kind of to be used to protect examination the present invention relates to a kind of analogue means for being capable of high voltage breaker simulator state
The simulator of circuit breaker of true primary cut-out can be replaced in testing.
Background technology
Because pilot project is more in current reaying protection test, breaker will frequently divide-shut brake, so can be to open circuit
The service life of device impacts.Transfomer Substation Reconstruction and it is newly-built in, when protection device has installed, primary cut-out by
In the supply of material etc. other the reason for fail to install when, influence whether the progress of protection test, influence the progress of whole engineering.
Transforming plant lead-in backup auto-activating device, and after main transformer backup auto-activating device puts into operation, to be thrown automatically to the test period
The protection test cut, because the delay of prepared auto restart switching needs the time of power failure 3-5 seconds, the dead electricity of transformer station in short-term is resulted in,
Influence the normal power supply to user.Backup auto-activating device fails to be tested according to the normal test period for a long time, with fortune
The increase of row time, often there is the phenomenon of prepared auto restart tripping and malfunction.Never have a power failure for solution and whole group is carried out to backup auto-activating device
Protection test, to ensure normal power supply, the common relay of big family expenses simulates real breaker for a long time, carry out it is standby from
The total group test that do not have a power failure of device is thrown, common relay actuating coil resistance is larger, usually 10-20K ohms, and fixation can not
Adjustment, differs larger with the resistance (70-600 ohms) of the divide-shut brake coil of actual high-voltage breaker, is connect when this actuating coil
When divide-shut brake control loop, control loop loop current is too small, it is impossible to and check protection device outputs the current carrying capability of contact,
Protection device position display also can be too small because of electric current, and switch division position correctly can not be gathered；Common relay
Actuation time be usually≤20ms, the opening time of primary cut-out is usually ＞ 20ms, and closing time is usually ＞ 50ms,
So common relay can not high voltage breaker simulator well branch wire time, so as on time for being carried out to protections at different levels
Cooperation correctly verified.
The simulator of circuit breaker of existing small part manufacturer production, it is functionally not comprehensive enough, have the following disadvantages：
1st, the branch wire time of breaker is fixed as several gears, and the divide-shut brake per circuit breaker can not be carried out as desired
Setting, opening and closing resistor is adjustable, and gear is less；
2nd, existing power supply input is inputted using single AC power, does not account for working site AC power during work
Bad situation about taking；
3rd, breaker output node capacity it is smaller, branch wire time and opening and closing resistor error are larger, and price is held high
Expensive, practicality is not strong.
The content of the invention
To solve the shortcomings of the prior art, it is used to break instead of true height in protection test the invention discloses one kind
The simulator of circuit breaker of road device, it is an object of the invention to change existing protection test mesohigh breaker frequently to act pair
The present situation that life-span has an impact, solve the problems, such as not testing protection device because of the non-installation of primary cut-out,
Solve the problems, such as not ensureing not having a power failure to carry out whole group protection test to transformer substation spare power automatic switching device, and solve existing breaker
Analogue means function is not comprehensive enough, simulates the imperfect present situation of effect.
To achieve the above object, concrete scheme of the invention is as follows：
It is described for replacing the simulator of circuit breaker of true primary cut-out, including core controller in protection test
Core controller respectively with breaker circuit, controlling power circuit, human-computer interaction device, divide-shut brake coil analogue means and display
Panel is connected；
The breaker circuit include multiple circuit structure identicals extension relay circuit, breaker protection close a floodgate open into
Closing coil and controller combined floodgate open entry loop are accessed, closing coil is in parallel with controller combined floodgate open entry loop, and breaker is protected
Shield tripping operation is opened into access switching winding and controller separating brake open entry loop, switching winding with controller separating brake open entry loop phase simultaneously
Connection, each relay circuit that extends is extended using a powerful relay as contact, for the auxiliary of mimic-disconnecting switch
Make and break contact is helped, division position is carried out and outputs.
The core controller is used for the simulation for realizing the branch wire time intrinsic to all kinds of breakers, it is split enter divide-shut brake
The control of the logic judgment of signal；The core controller is opened using 12 tunnels and outputs programmable controller into, 6 roads, can realize 6 tunnels
The simulation of breaker.
The controlling power circuit is used as control power supply using Switching Power Supply, can using alternating current-direct current two-way power input
Adjustable DC electricity output is provided；
The human-computer interaction device is broken using text display as human-computer interaction device, the reality simulated for setting
The branch wire time of road device, and alarm is monitored in real time to the opening and closing state of breaker；
The divide-shut brake coil analogue means include one group can stepping regulation switching winding and one group can stepping regulation
Closing coil；
The display panel, for showing the division position of every road mimic-disconnecting switch.
The extension relay circuit includes relay, and the normally closed contact of relay concatenates the closing circuit into breaker,
The normal opened contact of relay concatenates the sub-gate circuit into breaker, and the tripping operation end of relay passes through time delay module and the tripping operation electricity of tripping
Road is connected, and the combined floodgate end of relay is connected by combined floodgate time delay module with combined floodgate circuit.
The trip circuit includes the first diode and the second diode of differential concatenation, the negative terminal of the first diode and jump
Lock time delay module is connected, and is connected on the circuit between the negative terminal and tripping operation time delay module of the first diode with hand TRIP, and first
Open to enter the GATT with trip protection on circuit between diode and the second diode and be connected, the second diode also extends relay with this
A normal opened contact be connected, the second diode and this extension relay a pair of normal opened contacts between circuit on be also associated with
The divider resistance and indicator lamp being in series, to the gate-dividing state of this breaker of real time reaction.
The combined floodgate circuit includes the 3rd diode and the 4th diode of differential concatenation, the negative terminal of the 3rd diode and conjunction
Lock time delay module is connected, and is connected on the circuit between the negative terminal and combined floodgate time delay module of the 3rd diode with hand combination switch, and the 3rd
Opened on circuit between diode and the 4th diode with protection combined floodgate into being connected, the 4th diode also extends relay with this
One normally closed contact is connected, and phase is also associated with the circuit between the 4th diode and a pair of normally closed contacts of this extension relay
The divider resistance and indicator lamp of series connection, to the "on" position of this breaker of real time reaction.
The controlling power circuit includes AC220V ac input ends and the dc source from transformer station direct current system access
End, the AC220V ac input ends are connected with DC220V output switch power sources, and the AC220V ac input ends are additionally provided with
Switch, the DC220V output switch power sources have DC0-260V, 1.5-30A adjustable DC electricity output, and output end is equipped with number
Word D.C. voltmeter, the working power of digital voltmeter are derived from the enter line side of Switching Power Supply, the transformer station direct current system access
DC power supply terminal and Switching Power Supply output dc source between be additionally provided with three station change-over switchs.
The switching winding and closing coil have each concatenated the switching winding of the primary cut-out of 4 CT10A mechanisms, and
Access band switch realizes 5 grades of regulations.
The 6 circuit breaker divide-shut brake loop is all serially connected with forward diode, to ensure that every circuit breaker is individually connecing
There is divide-shut brake to open to order of closing a floodgate fashionable, can guarantee that and do not allow electric current to cause to miss by other circuit-breaker switching on-off control loops
It is dynamic.
Operation principle：The present apparatus realizes the branch wire time to breaker by the use of programmable controller as control core
Accurate simulation, open divide-shut brake the logic judgment into order and execution, utilize the divide-shut brake of the true breaker of multi-gear adjustable
Coil carrys out the size of the divide-shut brake loop resistance of mimic-disconnecting switch, and is replaced truly using the auxiliary contact of powerful relay
The auxiliary contact of breaker, carry out position and output, according to protection test needs, will can both have been put manually per road mimic-disconnecting switch point
Position, it can manually put again and close position, external protection breaker tripping and closing are opened into this accessible device, and control core passes through logic judgment, and passes through
The delay of time delay module is crossed, realizes each road mimic-disconnecting switch difference breaker tripping and closing, and will be sent on circuit breaker position, precisely simulation is true
Action process, the operating state of breaker.
Replace the process of real breaker progress line protective devices experiment as follows using this device：According to what is simulated
The size of the branch wire time of true breaker, sets on text display to the branch wire time of every circuit breaker,
Opening and closing resistor is adjusted on panel, so that division of the opening and closing resistor per circuit breaker close to the true breaker simulated
Lock loop resistance, the closing by hand button on panel is pressed, respective circuit breakers can be put closing position, can be with by opening button
Corresponding breaker is put into open position.By this device close a floodgate input be connected to protection device combined floodgate it is defeated output, tripping operation input
The tripping operation for being connected to protection device is outputed, and the position that the conjunction position output of this device is connected to protection device is opened into by point of this device
Point position that position output is connected to protection device is opened into after the action of, mimic-disconnecting switch, and the indicator lamp of upper corresponding breaker lights as face,
And text display also has corresponding circuit-breaker switching on-off action alarm instruction, display " xx# breaker open operations ", " xx# open circuits
Device closes a floodgate ", so just complete protection act, process is successfully entirely tested in breaker tripping and closing, protection device is verified.Profit
Can be to testing the whole group of backup auto-activating device with the present apparatus, and can guarantee that and do not have a power failure once, can also be to main transformer differential
The protection devices such as protection, back-up protection are tested.
Beneficial effects of the present invention：
The branch wire time of No. 6 mimic-disconnecting switches of the present invention can be set as needed, the breaker division simulated
Lock time precision is high；It is true by the use of the switching winding of actual high-voltage breaker as mimic-disconnecting switch divide-shut brake coil, simulation effect
Effectively, and loop resistance precision it is big；Working power is inputted using AC-DC double power supply, and has the output of adjustable DC power supply；
When hand departure is closed, obstructed overcurrent in divide-shut brake coil, only outside breaker tripping and closing are opened fashionable, just have electric current to pass through in coil；Often
Up to more than 100,000 times, service life is grown for road mimic-disconnecting switch action time；Simple in construction, small volume, cost are cheap.
The present invention can simulate true breaker, be used for the verification to protective relaying device instead of true breaker, to subtract
Few breaker reduces the service life of breaker due to the frequent divide-shut brake in protection test；And it can enter instead of transformer station
Line breaker, ensures that transformer station's two-way inlet wire does not have a power failure, and whole group protection test is carried out to transforming plant lead-in backup auto-activating device；Becoming
When power station is newly-built and transforms when protection device has been installed, but breaker is not installed, this dress row protection can also be utilized to fill
The experiment put, to shorten and installation period in advance；Using the present apparatus can also in the case where transformer station direct current system does not come into operation,
Protection device device is powered using the dc source that the present apparatus exports, tested in advance.
Device of the present invention is applied to power industry, protection equipment manufacturer, scientific research institutions, professional universities and colleges, makees
Actual alternate device when being tested for relay protection and automatics belt switch whole group drive system, this device action is accurate, reliable,
Action frequency is unrestricted, can simulate real breaker to greatest extent, can greatly improve the correctness of experiment with it is complete
Whole property.
Brief description of the drawings
Fig. 1 a are PC66201 types simulator of circuit breaker schematic diagrams of the present invention；
Fig. 1 b are per circuitry phase enlarged drawing in PC66201 types breaker of the present invention；
Fig. 2 is PC66201 types simulator of circuit breaker divide-shut brake coil gear adjustment figure of the present invention；
Fig. 3 is PC66201 types simulator of circuit breaker control electric power loop figure of the present invention；
Fig. 4 is PC66201 types simulator of circuit breaker panel overall appearance figure of the present invention；
Fig. 5 is PC66201 types simulator of circuit breaker internal structure schematic diagram of the present invention；
In figure, 1, Digital direct current voltage meter, 2,220V output switch power sources, 3, exchange input, 4, adjustable voltage direct current it is defeated
Go out, 5, direct current input, 6,24V output switch power sources, 7, text display, the 8, first extension relay circuit, the 9, second extension
Relay circuit, the 10, the 3rd extension relay circuit, the 11, the 4th extension relay circuit, the 12, the 5th extension relay circuit,
13rd, the 6th extension relay circuit.
Embodiment：
The present invention is described in detail below in conjunction with the accompanying drawings：
The simulator of circuit breaker of the present invention, by control core part, extension relay part, divide-shut brake coil simulation part
Divide, control power unit, man-machine interaction part, operation and several parts compositions of display panel.
The control core part, E parts as shown in Figure 5, the input of the tunnels of Shi Yong 12, the programmable controller of 6 tunnels output,
Again as shown in figure 1, using programmable controller, the simulation of the branch wire time intrinsic to all kinds of breakers is realized, it is split to enter to divide
The function of the logic judgment control of switching signal.
The corresponding input of programmable controller, output are：
I1：The order of #1 breaker closings inputs, I2：The order of #1 breaker open operations inputs
I3：The order of #2 breaker closings inputs, I4：The order of #2 breaker open operations inputs
I5：The order of #3 breaker closings inputs, I6：The order of #3 breaker open operations inputs
I7：The order of #4 breaker closings inputs, I8：The order of #4 breaker open operations inputs
I9：The order of #5 breaker closings inputs, I10：The order of #5 breaker open operations inputs
I11：The order of #6 breaker closings inputs, I12：The order of #6 breaker open operations inputs
Corresponding output contact is：
(into docking point, contact is broken as separating brake, and junction closure is combined floodgate)
Q1：#1 breakers point, close a floodgate
Q2：#1 breakers point, close a floodgate
Q3：#1 breakers point, close a floodgate
Q4：#1 breakers point, close a floodgate
Q5：#1 breakers point, close a floodgate
Q6：#1 breakers point, close a floodgate
Using Programming of programmable controller software, logi function chart program is write, is downloaded to programmable controller.
Input logic module selects Non-logic modules in functional diagram, and delay function module is selected and remains up time delay module,
It is directly output to output relay by RS relay module.Programmable controller is ripe industrial control equipment, and reliability is high,
Strong antijamming capability, service life length.
Concrete operating principle is described as follows：
Logic module selects Non-logic modules, functional module shown in the logi function chart programme diagram of this programmable controller
Module, RS breaker modules are connected from delay.Breaker tripping and closing order is entered by I disconnectings, is analyzed and is judged into logic work(functional module,
The purpose for accessing breaker tripping and closing order with phase inverter respectively is that state can efficiently control when going up electric for the first time to testboard, prevents mould
Intend breaker and stochastic regime occur, prevent from shaking by postponing connection auxiliary reclay, it is ensured that reliable signal could trigger upset
RS two-position relay, instantaneous interference signal is effectively isolated, RS two-position relay simulates true breaker, and outlet send power former
Part exports to ensure closing loop actual power and impedance, by O1-O8 ports to division.
Relay part is extended, is the D1-D6 parts on Fig. 5, corresponds to 6 circuit breakers respectively.As shown in Fig. 1 a-1b, it is
All extended per road mimic-disconnecting switch using a powerful DC relay as contact, the auxiliary of high voltage breaker simulator is opened
Coila, carry out division position and output.DC relay model：JQX-38F, output contact：Three, which open three, closes, contact capacity 40A/
28VDC 40A/240VAC, coil voltage：DC220V, coil power：2.5W.Per road mimic-disconnecting switch, all thus relay provides
A pair of normal opened contacts are outputed, and analog switch divides position, and a pair of normally closed contacts are outputed, and position is closed in simulation.Returned per road mimic-disconnecting switch separating brake
Road all seals in a pair of normal opened contacts of this extension relay, and each closing circuit of circuit breaker seals in a pair of this extension relay
Normally closed contact, to cut off divide-shut brake wire loop after divide-shut brake, relay tip capacity is sufficiently large, can effectively cut off division
Direct-current arc caused by lock, ensure that coil will not be burnt by electric current for a long time.This relay electrical endurance 100,000 times, machinery
Life-span 10,000,000 times.Contact-actuation time is rapid, within 5ms.
As shown in Figure 1a, extension relay includes：First extension relay circuit 8, corresponding 1 circuit breaker, 1 circuit breaker
A phases, the second extension relay circuit 9, corresponding 2 circuit breakers, 1 circuit breaker B phases, the 3rd extension relay circuit 10, corresponding 3
Circuit breaker, 1 circuit breaker C phases, the 4th extension relay circuit 11, corresponding 4 circuit breakers, 2 circuit breaker A phases, the 5th expands
Relay circuit 12 is opened up, corresponding 5 circuit breakers, 2 circuit breaker B phases, the 6th extension relay circuit 13, corresponds to 6 circuit breakers,
2 circuit breaker C phases.
Described divide-shut brake coil analog portion, it is Fig. 5 A1-A8 parts, A1, A3, A5, A7 are concatenated into closing coil,
A2, A4, A6, A8 are concatenated into switching winding.Separating brake has each concatenated the primary cut-out of 4 CT10A mechanisms with closing circuit
Switching winding, and access band switch and realize 5 grades of regulations, every Ω of coil 125.E is programmable controller, and H1-H2 simply collects
Into circuit board, D1-D6 extension relays, C binding posts.
Closing coil resistance is：
1 grade：A1=125 Ω
2 grades：A1+A3=250 Ω
3 grades：A1+A3+A5=275 Ω
4 grades：A1+A3+A5+A7=500 Ω
5 grades：∞Ω.
Switching winding resistance is：
1 grade：A2=125 Ω
2 grades：A2+A4=250 Ω
3 grades：A2+A4+A6=275 Ω
4 grades：A2+A4+A6+A8=500 Ω
5 grades：∞Ω
The purpose for introducing 5 grades (∞ Ω) is in order to which the protection test of control loop template is done in mating protection device, simulation.
During protection test, gear is adjusted to the close gear of the high-voltage circuit-breaker switching on-off coil resistance with being modeled, to examine
The current carrying capability of contact is outputed in protection device breaker tripping and closing.To avoid coil mutual inductance, in the arrangement of the position of coil, make every two
Coil has 3cm distance, and one, the interval closing coil of two switching windings is concatenated again, and away from programmable controller
And miscellaneous part, avoid electromagnetic interference.As shown in Fig. 2 it is that No. 6 mimic-disconnecting switches share one group of adjustable switching winding, one
The adjustable closing coil of group.Divide-shut brake wire loop per circuit breaker all seals in diode, and unidirectional using diode is led
Electrically, avoid causing All other routes when outside order of closing a floodgate inputs all the way
Close a floodgate.When hand departure is closed, fashionable, ability in coil is opened in obstructed overcurrent in divide-shut brake coil, only outside breaker tripping and closing
There is electric current to pass through.
Power unit is controlled, is control electric power loop part as shown in Figure 3, including 220V output switch power sources 2,220V
The input of output switch power source 2 is connected with exchanging input 3, is also associated between exchange input and 220V output switch power sources 2
Switch, is also associated with Digital direct current voltage meter 1 between the input of 220V output switch power sources 2 and adjustable voltage DC output end 4,
The output end of 220V output switch power sources 2 is also connected by three station change-over switchs with direct-flow input end 5, three station change-over switchs
The other end be connected by 24V output switch power sources 6 with text display 7.
Electric power loop part is controlled using AC220V exchange input DC0-260V 2.2A 500W rearrangeable switch power supply conducts
Device control power supply, working power, signal circuit power supply, can also be from transforming plant DC when AC power inconvenience takes
System access (+110V, -110V) dc source, guidance panel are provided with three station change-over switchs, convenient switching, avoid switch electricity
Direct current after the conversion of source is mixed with the direct current of transformer station direct current system, and influences the straight-flow system of whole transformer station.500W
Switching Power Supply, using the teaching of the invention it is possible to provide 0-260V, 1.5-30A adjustable DC electricity output, in order to transformer station it is newly-built with transformation when, when straight
Streaming system is not set up also when finishing, and provide dc source by it is tested protection device in advance.Control supply voltage and can
Tuning DC output voltage is monitored display by Digital direct current voltage meter, using ICL7135 digital voltmeters, panel type, numeral
It has been shown that, four and half numerical value are shown, precision is high, good appearance.
For the arrangement of instrument internal power module as shown in Fig. 5 B, G, F part, B is the output of 500W0-220V adjustable DCs
Switching Power Supply, G are 24V Switching Power Supplies, and F is 5V Switching Power Supplies, and 24V Switching Power Supplies aim at text display and provide working power,
5V Switching Power Supplies aim at ICL7135 digital voltmeters and provide working power.
Man-machine interaction part, refer to the embedded text display using panel type as the friendship with experimenter and controller
Mutual instrument, it can be changed according to the branch wire time for the live actual breaker simulated on text display programmable
The size of the numerical value of time register inside controller, you can be modified to the branch wire time of mimic-disconnecting switch, per road
The branch wire time of mimic-disconnecting switch can be changed on panel, easy to operate.Text display can also be to every road
The opening and closing state of breaker is monitored alarm in real time.Outer protection is both provided with per circuit breaker to open into breaker tripping and closing, and
And can be with manual divide-shut brake.
Operation and display panel part, refer to part as shown in Figure 4, and guidance panel is divided into 7 areas, i.e. simulation open circuit
Device position output area, divide-shut brake order input area, manual divide-shut brake operation are indicator lamp viewing area, adjustable voltage monitoring, are exported
Area, divide-shut brake loop resistance adjustment area, power of alterating and direct current input and operation switch area, text display area, each Division is reasonable,
Facilitating wiring, integral layout is attractive in appearance with operating.All banana bins are all according to the green C of A Huangs B are red, dc source is according to red on panel
Color+, blueness-technical standard be distinguish between.Indicated using panel type LED light as monitoring, it is red to close green point.Using face
The manual divide-shut brake operation button of template carries out the operation of manual divide-shut brake, and red green point of conjunction.Guidance panel material is double-colored
Plastics acrylic board, using laser engraving technique perforate and carve characters, panel is close to one piece of insulation board and carries out strength support below.
By control core part, extension relay part, control power unit, man-machine interaction part, divide-shut brake coil mould
It is positioned over after intending part, operation and a few part assemblings of display panel in a high instrument container of the wide 20.5cm of the long 32cm of 42cm, group
It is overall light, attractive in appearance into a complete PC66201 type simulator of circuit breaker, 8.8 kilograms of the instrument quality.
It should be noted last that the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those within the art that, to the technical side of the present invention
Case is modified or equivalent substitution, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right among.
Claims (6)
1. the simulator of circuit breaker for replacing true primary cut-out in protection test, it is characterized in that, including core control
Device, the core controller fill with breaker circuit, controlling power circuit, human-computer interaction device, the simulation of divide-shut brake coil respectively
Put and be connected with display panel；
The extension relay circuit that the breaker circuit is in parallel including multiple circuit structure identicals, the one of breaker circuit
End is connected with closing coil, and the other end is connected with switching winding, and each relay circuit that extends uses a relay conduct
Contact extends, and for the auxiliary switch contact of mimic-disconnecting switch, carries out division position and outputs；
The extension relay circuit includes relay, and the normally closed contact of relay concatenates the closing circuit into breaker, relay
The normal opened contact of device concatenates the sub-gate circuit into breaker, and the tripping operation end of relay passes through time delay module and the trip circuit phase of tripping
Even, the combined floodgate end of relay is connected by combined floodgate time delay module with combined floodgate circuit；
The trip circuit includes the first diode and the second diode of differential concatenation, and negative terminal and the tripping operation of the first diode are prolonged
When module be connected, be connected on the circuit between the negative terminal of the first diode and tripping operation time delay module with hand TRIP, the one or two pole
Be connected on circuit between pipe and the second diode with trip protection switch, the second diode also extends one of relay with this
Normal opened contact is connected, and is also associated with being in series on the circuit between a pair of normal opened contacts of the second diode and this extension relay
Divider resistance and indicator lamp；
The combined floodgate circuit includes the 3rd diode and the 4th diode of differential concatenation, and the negative terminal of the 3rd diode prolongs with combined floodgate
When module be connected, be connected on the circuit between the negative terminal and combined floodgate time delay module of the 3rd diode with hand combination switch, the three or two pole
Be connected on circuit between pipe and the 4th diode with protection closing switch, the 4th diode also with this extension one of relay
Normally closed contact is connected, and is also associated with being in series on the circuit between a pair of normally closed contacts of the 4th diode and this extension relay
Divider resistance and indicator lamp.
2. being used in protection test replace the simulator of circuit breaker of true primary cut-out as claimed in claim 1, it is special
Sign is that the controlling power circuit, as control power supply, utilizes alternating current-direct current two-way power input using Switching Power Supply, using the teaching of the invention it is possible to provide
Adjustable DC electricity output；
The human-computer interaction device uses text display as human-computer interaction device, for setting the actual breaker simulated
Branch wire time, and alarm is monitored in real time to the opening and closing state of breaker；
The divide-shut brake coil analogue means includes one group of adjustable switching winding and one group of adjustable closing coil；
The display panel, for showing the division position of every road mimic-disconnecting switch.
3. being used in protection test replace the simulator of circuit breaker of true primary cut-out as claimed in claim 1, it is special
Sign is, the core controller is used for the simulation for realizing the branch wire time intrinsic to all kinds of breakers, it is split enter divide-shut brake letter
Number logic judgment control；The control core is opened using 12 tunnels and outputs programmable controller into, 6 roads, can realize the open circuit of 6 tunnels
The simulation of device.
4. being used in protection test replace the simulator of circuit breaker of true primary cut-out as claimed in claim 1, it is special
Sign is that the controlling power circuit includes AC220V ac input ends and the DC power supply terminal from transformer station direct current system access,
The AC220V ac input ends are connected with DC220V output switch power sources, and the AC220V ac input ends are additionally provided with out
Close, the DC220V output switch power sources have DC0-260V, 1.5-30A adjustable DC electricity output, and output end is equipped with numeral
D.C. voltmeter, the working power of digital voltmeter are derived from the enter line side of Switching Power Supply, the transformer station direct current system access
Three station change-over switchs are additionally provided between DC power supply terminal and the dc source of Switching Power Supply output.
5. being used in protection test replace the simulator of circuit breaker of true primary cut-out as claimed in claim 1, it is special
Sign is that the switching winding and closing coil have each concatenated the switching winding of the primary cut-out of 4 CT10A mechanisms, and connect
Enter band switch and realize 5 grades of regulations.
6. being used in protection test replace the simulator of circuit breaker of true primary cut-out as claimed in claim 3, it is special
Sign is that the 6 circuit breaker divide-shut brake loop is all serially connected with forward diode.
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| CN201510195162.XA CN104764998B (en) | 2015-04-22 | 2015-04-22 | For replacing the simulator of circuit breaker of true primary cut-out in protection test |
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