CN104064081A - Fault simulating training device of current transformer - Google Patents
Fault simulating training device of current transformer Download PDFInfo
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- CN104064081A CN104064081A CN201410237083.6A CN201410237083A CN104064081A CN 104064081 A CN104064081 A CN 104064081A CN 201410237083 A CN201410237083 A CN 201410237083A CN 104064081 A CN104064081 A CN 104064081A
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Abstract
The invention relates to a fault simulating training device of a current transformer. The device comprises a low-voltage current transformer body equipped with a tap, a wireless transmitter that is used in match, a wireless switch control driver and a housing; a fault simulating switch executing circuit, which is electrically connected with a wireless switch control driver, is arranged between a secondary side of the current transformer body and an output wiring terminal of the housing; a remote control transmitter is used for transmitting a fault control signal input by an operator to the wireless switch control driver by a wireless mode; the wireless switch control driver is used for receiving the fault control signal of the remote control transmitter; the control fault simulation switch executing circuit realizes transformation ratio switching simulation of the current transformer body, polarity adding and reducing switching simulation, exceeding impedance and normal impedance switching simulation, connection and disconnection switching simulation of the secondary side. With the adoption of the fault simulating training device of the current transformer, various site faults can be reproduced, the training efficiency is high, and the consistency with the site is high.
Description
Technical field
The present invention relates to a kind of teaching training apparatus, particularly a kind of current mulual inductor malfunction simulation and training device.
Background technology
Current transformer (TA) is the sensor that measurement, measuring instrument obtain primary current information, for measuring apparatus, whether the wiring of current transformer correct very important, if any wiring error, will cause the value of measuring electric energy to change, can not normally measure, even cannot measure, when serious, will cause the damage of instrument and meter, equipment; More seriously, in mutual inductor place wiring error, probably cause equipment damage or human casualty accident to occur.Current training apparatus mainly contains, the real equipment consistent with on-the-spot physical device and intelligent simulation training apparatus, but for training, all there is comparatively serious deficiency in these two kinds of equipment:
1. on-the-spot real system: the emulation training that hardware carries out, because being utilizes field apparatus to give training, each producer's difference is little, and cost of investment is compared relatively low with smart machine, and with on-the-spot high conformity, particularly the result of training of fitting operation class is better.The most obvious deficiency is to reproduce fault, is not easy to principle study, and training efficiency is extremely low, lacks the comprehensive and theoretical property of professional knowledge.
2. existing intelligent simulation training system: uninteresting, dull man-machine interface lacks the sense of reality, distinct issues are poor with on-the-spot consistance, and the operation training of wiring class can not be installed.Can not make start-up's integral body comprehensively go to understand the wiring of device, its inner structure, with on-the-spot widely different, therefore cannot excite the dense learning interest of start-up, can not initiatively go to understand and learn situation and the reason of on-the-spot false wiring.
Summary of the invention
The object of the invention is for the deficiencies in the prior art, a kind of current mulual inductor malfunction simulation and training device is provided, it can reproduce various field failures, for student, analyze, effective enhancement training teaching efficiency, training efficiency is high, and with on-the-spot high conformity, make student's learning initiative high.
Technical scheme of the present invention is: a kind of current mulual inductor malfunction simulation and training device, comprise current transformer body and matching used wireless launcher with tap, wireless switching is controlled driver, described wireless switching is controlled driver summation current transformer body and is all arranged in a housing, on described housing, be respectively equipped with input wires terminal and output wiring terminal, the input wires terminal of described housing is electrically connected to the primary side of current transformer body, between the secondary side of described current transformer body and the output wiring terminal of housing, be provided with fault simulation switch executive circuit, described fault simulation switch executive circuit is controlled actuator electrical with wireless switching and is connected, described remote control transmitter is controlled driver for the failure control signal of operator's input is passed to wireless switching by wireless mode, described wireless switching is controlled driver for receiving the failure control signal of remote control transmitter, control fault simulation switch executive circuit and realize the no-load voltage ratio switching simulation of current transformer body, add, subtractive polarity is switched simulation, impedance exceeds standard, simulation is normally switched in impedance, and secondary side path, open circuit and switch simulation.
Described fault simulation switch executive circuit comprises four kinds of simulation executive circuits, be respectively no-load voltage ratio and switch simulation executive circuit, add, subtractive polarity switches simulation executive circuit, impedance exceeds standard, simulation executive circuit and secondary side path are normally switched in impedance, the switching simulation executive circuit that opens circuit, and four kinds of simulation executive circuits are connected on respectively between the secondary side of current transformer body and the output wiring terminal of housing.
Described no-load voltage ratio is switched simulation executive circuit and is comprised relay switch contact J1, the moving contact of described relay switch contact J1 is electrically connected to the first input end adding, subtractive polarity is switched simulation executive circuit, the normally closed contact of relay switch contact J1 is electrically connected to the K1 of the secondary side of current transformer body end, the normally opened contact of relay switch contact J1 is electrically connected to the tap of the secondary side of current transformer body, adds, subtractive polarity switches simulation the second input end of executive circuit and hold and be electrically connected to the K2 of the secondary side of current transformer body.
Described adding, subtractive polarity is switched simulation executive circuit and is comprised relay switch contact J2-1 and relay switch contact J2-2, the moving contact of relay switch contact J2-1 is electrically connected to the output terminal that no-load voltage ratio is switched simulation executive circuit, normally closed contact and the impedance of relay switch contact J2-1 exceed standard, the first input end that simulation executive circuit is normally switched in impedance is electrically connected to, normally opened contact and the impedance of relay switch contact J2-1 exceed standard, the second input end that simulation executive circuit is normally switched in impedance is electrically connected to, the moving contact of relay switch contact J2-2 is electrically connected to the K2 of the secondary side of current transformer body end, normally opened contact and the impedance of relay switch contact J2-1 exceed standard, the first input end that simulation executive circuit is normally switched in impedance is electrically connected to, normally closed contact and the impedance of relay switch contact J2-2 exceed standard, the second input end that simulation executive circuit is normally switched in impedance is electrically connected to.
Described impedance exceeds standard, impedance is normally switched simulation executive circuit and comprised relay normally closed contact, the two ends of relay normally closed contact are parallel with resistance, described relay normally closed contact be connected on add, subtractive polarity is switched simulation executive circuit and secondary side path, open circuit to switch and simulate between executive circuit.
Described secondary side path, open circuit and switch simulation executive circuit and comprise relay normally closed contact, described relay normally closed contact is connected on that impedance exceeds standard, impedance is normally switched between simulation executive circuit and the output wiring terminal of housing.
Compared with prior art, the invention has the beneficial effects as follows: due to this current mulual inductor malfunction simulation and training device, comprise current transformer body and matching used wireless launcher with tap, wireless switching is controlled driver, described wireless switching is controlled driver summation current transformer body and is all arranged in a housing, on described housing, be respectively equipped with input wires terminal and output wiring terminal, the input wires terminal of described housing is electrically connected to the primary side of current transformer body, between the secondary side of described current transformer body and the output wiring terminal of housing, be provided with fault simulation switch executive circuit.The present invention can reproduce various field failures by fault simulation switch executive circuit, for student, analyzes, and consolidates the knowwhy at classroom learning, student can be accomplished theoretical in conjunction with actual, has greatly improved training efficiency.By this device, reproduce various field failures, needn't arrive again on-the-spot real training, in the process of training, can save human and material resources and time.
Because the present invention is real in kind, current mulual inductor malfunction simulation and training device of the present invention and on-the-spot high conformity, student can understand structure, layout, the cabling of on-the-spot real electric power meter, can excite the dense learning interest of start-up, know from experience more deeply, avoid student in real work because training causes error with the different of scene.Because the present invention is real in kind, can also allow student that the operation training of wiring class is installed, improve and start the ability of practice, thereby avoiding causing making a fault in real work in default of practice causes unnecessary economic loss and personal injury.After the present invention and electric energy meter are connected, regulate fault simulation switch executive circuit, can also show the difference that electric energy meter that different wiring faults causes is measured for student.
Described fault simulation switch executive circuit is controlled actuator electrical with wireless switching and is connected, described remote control transmitter is controlled driver for the failure control signal of operator's input is passed to wireless switching by wireless mode, described wireless switching is controlled driver for receiving the failure control signal of remote control transmitter, control fault simulation switch executive circuit and realize the no-load voltage ratio switching simulation of current transformer body, add, subtractive polarity switches simulation, impedance exceeds standard, simulation is normally switched in impedance, and secondary side path, opens circuit and switch simulation.By wireless mode, control fault simulation switch executive circuit, student does not know the fault that tutor arranges, the technical examination of being more convenient for to student.
Four kinds of field failures of the present invention's simulation all will affect the measurement of electric energy meter, and the system of measuring will reduce, thereby affect the economic benefit of Utilities Electric Co., so allow above 4 kinds of trainee's profound understanding the mode of connection and grasp the correct mode of connection, not only guaranteed the safety of the person and equipment, can also be anti-electricity-theft, thus the economic benefit of Utilities Electric Co. improved.
Accompanying drawing explanation
Fig. 1 is theory diagram of the present invention;
Fig. 2 is the circuit diagram of fault simulation switch executive circuit of the present invention;
Fig. 3 is the structural representation of housing of the present invention.
In accompanying drawing, 1 is wireless launcher, and 2 control driver for wireless switching, and 3 is current transformer body, and 4 is fault simulation switch executive circuit, and 5 is housing, and 51 is base plate, and 52 is outer cover.
Embodiment
Referring to Fig. 1 to Fig. 3, a kind of current mulual inductor malfunction simulation and training device, comprises with current transformer body 3 and matching used wireless launcher 1, the wireless switching of tap and controls driver 2.Described wireless switching is controlled driver summation current transformer body and is all arranged in a housing 5, on described housing, be respectively equipped with input wires terminal and output wiring terminal, the input wires terminal of described housing is electrically connected to the primary side of current transformer body, between the secondary side of described current transformer body and the output wiring terminal of housing, be provided with fault simulation switch executive circuit 4, described fault simulation switch executive circuit is controlled actuator electrical with wireless switching and is connected, described remote control transmitter is controlled driver for the failure control signal of operator's input is passed to wireless switching by wireless mode, described wireless switching is controlled driver for receiving the failure control signal of remote control transmitter, control fault simulation switch executive circuit and realize the no-load voltage ratio switching simulation of current transformer body, add, subtractive polarity is switched simulation, impedance exceeds standard, simulation is normally switched in impedance, and secondary side path, open circuit and switch simulation.
Described fault simulation switch executive circuit comprises four kinds of simulation executive circuits, be respectively no-load voltage ratio and switch simulation executive circuit, add, subtractive polarity switches simulation executive circuit, impedance exceeds standard, simulation executive circuit and secondary side path are normally switched in impedance, the switching simulation executive circuit that opens circuit, and four kinds of simulation executive circuits are connected on respectively between the secondary side of current transformer body and the output wiring terminal of housing.The order of four kinds of simulation executive circuit series connection can be adjusted.The scheme that the present embodiment adopts is: no-load voltage ratio is switched simulation executive circuit, add, subtractive polarity switches simulation executive circuit, impedance exceeds standard, simulation executive circuit and secondary side path are normally switched in impedance, open circuit and switch simulation executive circuit and be connected on successively between the secondary side of current transformer body and the output wiring terminal of housing.Physical circuit is as follows:
Described no-load voltage ratio is switched simulation executive circuit and is comprised relay switch contact J1(relay J 1), the moving contact of described relay switch contact J1 with add, the first input end (being the moving contact of relay switch contact J2-1) that subtractive polarity is switched simulation executive circuit is electrically connected to, the normally closed contact of relay switch contact J1 is electrically connected to the K1 of the secondary side of current transformer body end, the normally opened contact of relay switch contact J1 is electrically connected to the tap of the secondary side of current transformer body, add, subtractive polarity switches simulation second input end (being the moving contact of relay switch contact J2-2) of executive circuit and the K2 of the secondary side of current transformer body end is electrically connected to.
Described adding, subtractive polarity is switched simulation executive circuit and is comprised relay switch contact J2-1 and relay switch contact J2-2(relay J 2), the moving contact of relay switch contact J2-1 is electrically connected to the output terminal (being the moving contact of relay switch contact J1) that no-load voltage ratio is switched simulation executive circuit, normally closed contact and the impedance of relay switch contact J2-1 exceed standard, the first input end (being one end of relay normally closed contact J3) that simulation executive circuit is normally switched in impedance is electrically connected to, normally opened contact and the impedance of relay switch contact J2-1 exceed standard, the second input end (being one end of relay normally closed contact J4) that simulation executive circuit is normally switched in impedance is electrically connected to, the moving contact of relay switch contact J2-2 is electrically connected to the K2 of the secondary side of current transformer body end, normally opened contact and the impedance of relay switch contact J2-1 exceed standard, the first input end (being one end of relay normally closed contact J3) that simulation executive circuit is normally switched in impedance is electrically connected to, normally closed contact and the impedance of relay switch contact J2-2 exceed standard, the second input end (being one end of relay normally closed contact J4) that simulation executive circuit is normally switched in impedance is electrically connected to.Add, the conversion of subtractive polarity can pass through switch or Control, as adopted switch to control, switch J2-1, J2-2 are linked switches, as adopted Control, are appreciated that dpdt double-pole double-throw (DPDT), i.e. two of relay groups of double-throw contacts simultaneously closures disconnect simultaneously.
Described impedance exceeds standard, impedance is normally switched simulation executive circuit and comprised relay normally closed contact J3, the two ends of relay normally closed contact J3 are parallel with resistance, described relay normally closed contact J3 be connected on add, subtractive polarity is switched simulation executive circuit and secondary side path, open circuit and switch on the S1 end line of simulating between executive circuit or on S2 end line.Also can be adding, subtractive polarity switches simulation executive circuit and secondary side path, open circuit and switch on the S1 end line of simulating between executive circuit, on S2 end line, relay normally closed contact be all set, and is respectively relay normally closed contact J3 and relay normally closed contact J4.The corresponding relay J 3 of relay normally closed contact J3.The corresponding relay J 4 of relay normally closed contact J4.The present embodiment adding, subtractive polarity switches simulation executive circuit and secondary side path, open circuit and switch on the S1 end line of simulating between executive circuit, on S2 end line, relay normally closed contact be all set.Physical circuit is: described impedance exceeds standard, impedance normally switch simulation executive circuit comprise relay normally closed contact J3(relay J 3) and relay normally closed contact J4(relay J 4), the two ends of relay normally closed contact J3 are parallel with resistance R 1, described relay normally closed contact J3 be connected on add, subtractive polarity is switched simulation executive circuit and secondary side path, open circuit and switch on the S1 end line of simulating between executive circuit.The two ends of relay normally closed contact J4 are parallel with resistance R 2, described relay normally closed contact J4 be connected on add, subtractive polarity is switched simulation executive circuit and secondary side path, open circuit and switch on the S2 end line of simulating between executive circuit.Because resistance R 1 and resistance R 2 are contact resistance and the conductor resistance of simulation, be generally less than 1 Europe.Described resistance R 1 and resistance R 2 also can change other resistance devices into.
Described secondary side path, open circuit and switch simulation executive circuit and comprise relay normally closed contact J5, described relay normally closed contact J5 is connected on that impedance exceeds standard, impedance is normally switched on the S1 end line between simulation executive circuit and the output wiring terminal of housing or on S2 end line.Also can exceed standard in impedance, impedance normally switches on the S1 end line between simulation executive circuit and the output wiring terminal of housing, on S2 end line, relay normally closed contact is all set, and is respectively relay normally closed contact J5 and relay normally closed contact J6.The corresponding relay J 5 of relay normally closed contact J5.The corresponding relay J 6 of relay normally closed contact J6.The present embodiment exceeds standard in impedance, impedance is normally switched on the S1 end line between simulation executive circuit and the output wiring terminal of housing, on S2 end line, relay normally closed contact is all set.Physical circuit is: described secondary side path, open circuit and switch simulation executive circuit and comprise relay normally closed contact J5(relay J 5) and relay normally closed contact J6(relay J 6), described relay normally closed contact J5 is connected on that impedance exceeds standard, impedance is normally switched and simulated between executive circuit (being the other end of relay normally closed contact J3) and the output wiring terminal S1 of housing.Described relay normally closed contact J6 is connected on that impedance exceeds standard, impedance is normally switched between simulation executive circuit (being the other end of relay normally closed contact J4) and the output wiring terminal S2 of housing.
Described housing is to make according to the housing of real high-tension current inductor, and its structure, outward appearance etc. are all identical with the housing of the on-the-spot real high-tension current inductor using.So housing of the present invention also has some different models.The housing of the different model that the present invention can need to select according to actual real training, the housing outward appearance of the present embodiment and wiring adopt the housing of the current transformer that model is LZZBJ9-10, after its inside hollows out, insert the electronic circuits such as low pressure (380V and following) current transformer with tap and fault simulation circuit, its structure as shown in Figure 3.Described High Pressure Shell comprises base plate and outer cover, and described wireless switching is controlled driver, current transformer body is fixed on base plate 51, and described outer cover 52 covers wireless switching control driver, current transformer body is fixedly connected with bed bolt.Described outer cover 52 is provided with two input wires terminal P1, P2, respectively the primary side of corresponding current mutual inductor body.Described outer cover is provided with two output wiring terminal S1, S2, respectively the secondary side of corresponding current mutual inductor body.
Described current transformer body employing adds tap by commercial low-voltage current mutual inductor (not being with shell) makes, and just can use low-voltage simulation high pressure, has increased security performance of the present invention.Such as having bought the current transformer of 20/5, in the middle of winding, add a tap, current transformer ratio just becomes 10/5 like this.Current transformer body can be according to actual real training needs, and repacking has the current transformer of various no-load voltage ratios, the tap of different no-load voltage ratios also can be set, thereby realize the changeable current transformer of no-load voltage ratio.Certainly, if do not need no-load voltage ratio to switch this function of simulation, also tap can be set.The no-load voltage ratio of the analog current mutual inductor that the present embodiment is selected is 25/5,10/5, and the no-load voltage ratio of this analog current mutual inductor can be switched between these two kinds of no-load voltage ratios.Certainly, current transformer body also can adopt the analog current mutual inductor with current transformer function.
It is commercial device that described wireless launcher, wireless switching are controlled driver.Both support the use, and are a kind of radio remote control switch.The present embodiment adopts radio remote control switch, controls respectively the switching simulation of four kinds of functions.If increase to switch analog functuion or reduce, switch analog functuion, the control way of radio remote control switch can be done corresponding adjustment.Described wireless switching control driving implement have the instruction of wireless reception wireless launcher and instruction is decoded after the coil electricity of pilot relay or the function of power-off.It can be various ways that fault simulation of the present invention is controlled, and can adopt hand switch to control or Control.The present invention can adopt the corresponding relay of a functional simulation, also can adopt the corresponding relay of a switch in Fig. 2.Described wireless launcher be have can accept operator's instruction and operator's instruction is encoded after radio to the function that wireless switching is controlled driver.It is the wireless switch controller of DBY-WS08P that the wireless switching control driver of the present embodiment can adopt model.This wireless switch controller adopts the special-purpose decoding chip of PT2272-M4, can receive the telepilot of PT2262 model.This telepilot is wireless launcher of the present invention.Physical circuit is as follows:
Described wireless switching is controlled driver and is comprised power pack, wireless receiving module (SH9902), decoder module (PT2272-M4), relay control module.Power pack comprises direct current 12V power supply, and direct current 12V power supply input wireless switching is controlled driver, a road direction relay power supply, and another road is after Three-end voltage stabilizer voltage stabilizing, and output 5V operating voltage, as the power supply of wireless receiving part and decoded portion.Described relay control module comprises triode, relay, the base stage of triode is connected with the output terminal of decoding chip PT2272 through base resistance respectively, the grounded emitter of triode, the collector of triode is connected with one end of the coil of relay, and the other end of the coil of relay connects 12V direct supply.The coil two ends of relay are parallel with respectively commutation diode.Described wireless launcher comprises key-press module, coding module (PT2262), wireless transmitter module (SH9801).Described key-press module is provided with 6 function buttons, is respectively SB1～SB6.
Described coding chip PT2262 has respectively a plurality of data input port, respectively the corresponding data input that receives the button of each key-press module.When a button of the module that pushes button, signal enters in PT2262 coding chip and starts to encode, after coded pulse generator, produce coded pulse signal, due to the coded pulse signal producing a little less than, so signal loading, to the carrier wave of upper frequency, then is transmitted by wireless transmitter module SH9801.The signal of transmitting is received by wireless receiving module SH9902, by wireless receiving module SH9902 output port, be directly connected with the data-in port of decoding chip PT2272, the confirmation that decoding chip carries out coded address determines whether the signal of corresponding transmitter, only have the geocoding of receiving end and the geocoding of transmitting terminal to arrange identical, output terminal just has output signal.The signal that decoding chip PT2272 receives data input pin, true through internal circuit decoding identification, if received Signal Message Address code is identical with this geocoding, the energising of the coil of corresponding relay J 1～J6 in the output terminal output signal pilot relay control module (6 relays) of decoding chip PT2272, thereby control corresponding relay contact action in fault simulation switch executive circuit, correspondence realizes the no-load voltage ratio switching simulation of current transformer body, add, subtractive polarity is switched simulation, impedance exceeds standard, simulation is normally switched in impedance, and secondary side path, open circuit and switch simulation.While again pressing above-mentioned button, remote signal disappears, and after remote signal disappears, all data bit are all output as low level, controls the whole power-off of Liu road relay.
The course of work of the present invention is as follows:
During not according to any button (original state), mutual inductor ratio 25/5.Press the button SB1 of the no-load voltage ratio switching simulation of controlling wireless launcher, the coil electricity of relay J 1, the moving contact of relay switch contact J1 separates with its normally closed contact 1, with its normally opened contact 2 adhesives, now, current transformer body is switched to the simulation of no-load voltage ratio 10/5 from no-load voltage ratio 25/5.The no-load voltage ratio of again pressing above-mentioned control wireless launcher is switched the button SB1 of simulation, the coil blackout of relay J 0, the moving contact of relay switch contact J0 separates with its normally opened contact 2, with its normally closed contact 1 adhesive, now, current transformer body is switched to the simulation of no-load voltage ratio 25/5 from no-load voltage ratio 10/5.Under two kinds of different no-load voltage ratios, can find that size of current has very large difference, thereby affect the metering of measuring apparatus, cause the minimizing of active power.In side circuit, Current Transformer Secondary rated current is 5A or 1A, and the mode of connection of this current transformer is correct.
During not according to any button (original state), mutual inductor secondary side is subtractive polarity state.Press and control adding of wireless launcher, subtractive polarity is switched the button SB2 of simulation, the coil electricity of relay J 2, the moving contact of relay switch contact J2-1 separates with its normally closed contact, with its normally opened contact adhesive, the moving contact of relay switch contact J2-2 separates with its normally closed contact, with its normally opened contact adhesive, relay switch contact J2-1 and relay switch contact J2-2 move (the similar double-point double-throw switch of relay switch contact J2-1 and relay switch contact J2-2 simultaneously, adopt a linked switch switch can replace relay switch contact J2-1 and relay switch contact J2-2, realize manually and controlling), now, current transformer body is switched to additive polarity state from subtractive polarity state.Again above-mentioned press control the adding of wireless launcher, subtractive polarity is switched the button SB2 of simulation, the coil blackout of relay J 2, the moving contact of relay switch contact J2-1 separates with its normally opened contact, with its normally closed contact adhesive, the moving contact of relay switch contact J2-2 separates with its normally opened contact, with its normally closed contact adhesive, now, current transformer body is switched to subtractive polarity state from additive polarity state.And measuring apparatus is only under subtractive polarity condition, could normally measure.The in the situation that of additive polarity, electric energy meter will reduce the system of reversion or measurement.
During not according to any button (original state), transformer secondary circuit is impedance normal condition.Press button SB3 or the SB4 that impedance exceeds standard, simulation is normally switched in impedance that control wireless launcher, the coil electricity of relay J 3 or J4, relay normally closed contact J3 or relay normally closed contact J4 disconnect, resistance R 1 or resistance R 2 access respectively add, subtractive polarity is switched simulation executive circuit and secondary side path, open circuit and switch on the S1 end line or S2 end line of simulating between executive circuit, now, the secondary of current transformer body is surveyed as the impedance state that exceeds standard.The control group of again pressing wireless launcher exceeds standard, simulation is normally switched in impedance button SB3 or SB4, the coil blackout of relay J 3 or J4, relay normally closed contact J3 or relay normally closed contact J4 adhesive, now, the secondary of current transformer body is surveyed as impedance normal condition.As relay normally closed contact J3 with when relay normally closed contact J4 disconnects or one of them disconnects simultaneously, now the secondary of current transformer body is surveyed as the impedance state that exceeds standard.When relay normally closed contact J3 and relay normally closed contact J4 while closure, now the secondary of current transformer body is surveyed as impedance normal condition.When impedance exceeds standard, can fall by normal pressure, measuring apparatus is exerted an influence, cause measuring apparatus inaccurate.
During not according to any button (original state), mutual inductor secondary side A(B, C) be logical state.Press and control the secondary side path of wireless launcher, button SB5 or the SB6 of the switching simulation of opening circuit, the coil electricity of relay J 5 or J6, relay normally closed contact J5 or relay normally closed contact J6 disconnect, and now, the secondary of current transformer body is surveyed as off-state.Again press and control the secondary side path of wireless launcher, button SB5 or the SB6 of the switching simulation of opening circuit, the coil blackout of relay J 5 or J6, relay normally closed contact J5 or relay normally closed contact J6 adhesive, now the secondary of current transformer body is surveyed as closure state.As relay normally closed contact J5 with when relay normally closed contact J6 disconnects or one of them disconnects simultaneously, now secondary is surveyed and is off-state.When relay normally closed contact J5 and relay normally closed contact J6 while closure, now for secondary side is closure state (logical state).When three are connected, be correct wiring, will can not affect measuring apparatus and measure, as wherein one while disconnecting of three-phase, just as a broken string mutually, will affect measuring apparatus and measure.
The present invention can reproduce various field failures by fault simulation switch executive circuit, for student, analyzes, and consolidates the knowwhy at classroom learning, student can be accomplished theoretical in conjunction with actual, has greatly improved training efficiency.And the present invention can also allow student that the operation training of wiring class is installed, improve and to start the ability of practice, thereby avoiding causing making a fault in real work in default of practice causes unnecessary economic loss and personal injury.The present invention can also show for student the difference of the electric energy meter measurement that different wiring faults causes.And high-tension current inductor fault simulation actual training device of the present invention and on-the-spot high conformity, can excite the dense learning interest of start-up, learning initiative is high, knows from experience more deeply, avoids student in real work because training causes error with the different of scene.The present invention can also be for student's technical examination.By wireless mode, control fault simulation switch executive circuit, student does not know the fault that tutor arranges, the technical examination of being more convenient for to student.
Four kinds of field failures of the present invention's simulation all will affect the measurement of electric energy meter, and the value of measuring will reduce, thereby affect the economic benefit of Utilities Electric Co., so allow above 4 kinds of trainee's profound understanding the mode of connection and grasp the correct mode of connection, not only guaranteed the safety of the person and equipment, can also be anti-electricity-theft, thus the economic benefit of Utilities Electric Co. improved.
The present invention is not only confined to above-described embodiment, and above-described embodiment is optimum embodiment of the present invention.Various relay contacts in this fault simulation switch executive circuit can also adopt hand control switch to replace, and select various types of switches, and connect according to circuit diagram according to the circuit diagram of Fig. 2.Now, no longer need wireless launcher, wireless switching to control driver (radio remote control switch), but adopt hand control switch to control four kinds, switch analog functuion.Hand control switch can be arranged on housing.Certainly, also can not adopt radio remote control switch and hand control switch to control fault simulation switch executive circuit, but carry out pilot relay by single-chip microcomputer, PLC module etc., thereby control fault simulation switch executive circuit.
Claims (6)
1. a current mulual inductor malfunction simulation and training device, it is characterized in that: comprise current transformer body and matching used wireless launcher with tap, wireless switching is controlled driver, described wireless switching is controlled driver summation current transformer body and is all arranged in a housing, on described housing, be respectively equipped with input wires terminal and output wiring terminal, the input wires terminal of described housing is electrically connected to the primary side of current transformer body, between the secondary side of described current transformer body and the output wiring terminal of housing, be provided with fault simulation switch executive circuit, described fault simulation switch executive circuit is controlled actuator electrical with wireless switching and is connected, described remote control transmitter is controlled driver for the failure control signal of operator's input is passed to wireless switching by wireless mode, described wireless switching is controlled driver for receiving the failure control signal of remote control transmitter, control fault simulation switch executive circuit and realize the no-load voltage ratio switching simulation of current transformer body, add, subtractive polarity is switched simulation, impedance exceeds standard, simulation is normally switched in impedance, and secondary side path, open circuit and switch simulation.
2. current mulual inductor malfunction simulation and training device according to claim 1, it is characterized in that: described fault simulation switch executive circuit comprises four kinds of simulation executive circuits, be respectively no-load voltage ratio and switch simulation executive circuit, add, subtractive polarity switches simulation executive circuit, impedance exceeds standard, simulation executive circuit and secondary side path are normally switched in impedance, the switching simulation executive circuit that opens circuit, and four kinds of simulation executive circuits are connected on respectively between the secondary side of current transformer body and the output wiring terminal of housing.
3. current mulual inductor malfunction simulation and training device according to claim 2, it is characterized in that: described no-load voltage ratio is switched simulation executive circuit and comprised relay switch contact J1, the moving contact of described relay switch contact J1 with add, the first input end that subtractive polarity is switched simulation executive circuit is electrically connected to, the normally closed contact of relay switch contact J1 is electrically connected to the K1 of the secondary side of current transformer body end, the normally opened contact of relay switch contact J1 is electrically connected to the tap of the secondary side of current transformer body, add, subtractive polarity switches simulation the second input end of executive circuit and the K2 of the secondary side of current transformer body end is electrically connected to.
4. current mulual inductor malfunction simulation and training device according to claim 2, it is characterized in that: described in add, subtractive polarity is switched simulation executive circuit and is comprised relay switch contact J2-1 and relay switch contact J2-2, the moving contact of relay switch contact J2-1 is electrically connected to the output terminal that no-load voltage ratio is switched simulation executive circuit, normally closed contact and the impedance of relay switch contact J2-1 exceed standard, the first input end that simulation executive circuit is normally switched in impedance is electrically connected to, normally opened contact and the impedance of relay switch contact J2-1 exceed standard, the second input end that simulation executive circuit is normally switched in impedance is electrically connected to, the moving contact of relay switch contact J2-2 is electrically connected to the K2 of the secondary side of current transformer body end, normally opened contact and the impedance of relay switch contact J2-1 exceed standard, the first input end that simulation executive circuit is normally switched in impedance is electrically connected to, normally closed contact and the impedance of relay switch contact J2-2 exceed standard, the second input end that simulation executive circuit is normally switched in impedance is electrically connected to.
5. current mulual inductor malfunction simulation and training device according to claim 2, it is characterized in that: described impedance exceeds standard, impedance is normally switched simulation executive circuit and comprised relay normally closed contact, the two ends of relay normally closed contact are parallel with resistance, described relay normally closed contact be connected on add, subtractive polarity is switched simulation executive circuit and secondary side path, open circuit to switch and simulate between executive circuit.
6. current mulual inductor malfunction simulation and training device according to claim 2, it is characterized in that: described secondary side path, open circuit and switch simulation executive circuit and comprise relay normally closed contact, described relay normally closed contact is connected on that impedance exceeds standard, impedance is normally switched between simulation executive circuit and the output wiring terminal of housing.
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| CN108777089A (en) * | 2018-06-08 | 2018-11-09 | 国家电网有限公司 | A kind of correct errors with wiring connects electric training system with the dress table of fabrication evaluation |
| CN108847078A (en) * | 2018-06-08 | 2018-11-20 | 国家电网有限公司 | A kind of dress table connects electric training system |
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