CN104064081B - Current mulual inductor malfunction simulation and training device - Google Patents
Current mulual inductor malfunction simulation and training device Download PDFInfo
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- CN104064081B CN104064081B CN201410237083.6A CN201410237083A CN104064081B CN 104064081 B CN104064081 B CN 104064081B CN 201410237083 A CN201410237083 A CN 201410237083A CN 104064081 B CN104064081 B CN 104064081B
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Abstract
The present invention relates to a kind of current mulual inductor malfunction simulation and training device, comprise low-voltage current mutual inductor body and matching used wireless launcher with tap, wireless switching control driver, housing, between the secondary side of current transformer body and the output wiring terminal of housing, be provided with fault simulation switch executive circuit, fault simulation switch executive circuit is connected with wireless switching control actuator electrical, remote control transmitter is for passing to wireless switching control driver by the failure control signal of operator's input by wireless mode, wireless switching control driver is 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. it can reproduce various field failures, and training efficiency is high, and with on-the-spot high conformity.
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 metering device, whether the wiring of current transformer correct very important, will cause the value of measuring electric energy to change if any wiring error, can not normally measure, even cannot measure, when serious, will cause the damage of instrument and meter, equipment; More seriously, in transformer 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 all there is comparatively serious deficiency for training 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 difference is little, and cost of investment is relatively low compared 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 uniformity, and the operation training of wiring class can not be installed. Can not make start-up's entirety comprehensively go to understand the wiring of device, its internal 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, analyze for student, effectively 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 control driver, described wireless switching control driver summation current transformer body 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 with 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 connected with wireless switching control actuator electrical, described remote control transmitter is for passing to wireless switching control driver by the failure control signal of operator's input by wireless mode, described wireless switching control driver is 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 switch 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 movable contact of described relay switch contact J1 is electrically connected with the first input end adding, subtractive polarity is switched simulation executive circuit, the normally-closed contact of relay switch contact J1 is electrically connected with the K1 of the secondary side of current transformer body end, the normally opened contact of relay switch contact J1 is electrically connected with the tap of the secondary side of current transformer body, adds, subtractive polarity switches simulation the second input of executive circuit and the K2 of the secondary side of current transformer body and hold and be electrically connected.
Described adding, subtractive polarity is switched simulation executive circuit and is comprised relay switch contact J2-1 and relay switch contact J2-2, the movable contact of relay switch contact J2-1 is electrically connected with the output 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 electrical connection of simulation executive circuit is normally switched in impedance, normally opened contact and the impedance of relay switch contact J2-1 exceed standard, the second input electrical connection of simulation executive circuit is normally switched in impedance, the movable contact of relay switch contact J2-2 is electrically connected with 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 electrical connection of simulation executive circuit is normally switched in impedance, normally-closed contact and the impedance of relay switch contact J2-2 exceed standard, the second input electrical connection of simulation executive circuit is normally switched in impedance.
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 control driver, described wireless switching control driver summation current transformer body 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 with 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, analyzes for student, consolidates the knowwhy at classroom learning, student can be accomplished theoretical in conjunction with actual, has greatly improved training efficiency. reproduce various field failures by this device, 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 for student the difference of the electric energy meter measurement that different wiring faults causes.
Described fault simulation switch executive circuit is connected with wireless switching control actuator electrical, described remote control transmitter is for passing to wireless switching control driver by the failure control signal of operator's input by wireless mode, described wireless switching control driver is 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 switch simulation, impedance exceeds standard, simulation is normally switched in impedance, and secondary side path, open circuit 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 ensure the safety of the person and equipment, can also be anti-electricity-theft, thus the economic benefit of Utilities Electric Co. improved.
Brief description of the drawings
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 is wireless switching control driver, 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.
Detailed description of the invention
Referring to Fig. 1 to Fig. 3, a kind of current mulual inductor malfunction simulation and training device, comprises current transformer body 3 with tap and matching used wireless launcher 1, wireless switching control driver 2. described wireless switching control driver summation current transformer body 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 with 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 connected with wireless switching control actuator electrical, described remote control transmitter is for passing to wireless switching control driver by the failure control signal of operator's input by wireless mode, described wireless switching control driver is 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 switch 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 switch simulation executive circuit, impedance exceeds standard, impedance normally switch simulation executive circuit and secondary side path, open circuit switch simulation executive circuit 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 movable contact of described relay switch contact J1 with add, subtractive polarity is switched first input end (being the movable contact of the relay switch contact J2-1) electrical connection of simulation executive circuit, the normally-closed contact of relay switch contact J1 is electrically connected with the K1 of the secondary side of current transformer body end, the normally opened contact of relay switch contact J1 is electrically connected with the tap of the secondary side of current transformer body, add, subtractive polarity switches simulation second input (being the movable 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.
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 movable contact of relay switch contact J2-1 is electrically connected with the output (being the movable 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, first input end (being one end of the relay normally-closed contact J3) electrical connection of simulation executive circuit is normally switched in impedance, normally opened contact and the impedance of relay switch contact J2-1 exceed standard, the second input (being one end of relay normally-closed contact J4) electrical connection of simulation executive circuit is normally switched in impedance, the movable contact of relay switch contact J2-2 is electrically connected with 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, first input end (being one end of the relay normally-closed contact J3) electrical connection of simulation executive circuit is normally switched in impedance, normally-closed contact and the impedance of relay switch contact J2-2 exceed standard, the second input (being one end of relay normally-closed contact J4) electrical connection of simulation executive circuit is normally switched in impedance. add, the conversion of subtractive polarity can pass through switch or Control, as adopted switch control, switch J2-1, J2-2 are linked switches, as adopted Control, are appreciated that 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 circuit such as low pressure (380V and following) current transformer and fault simulation circuit with tap, its structure as shown in Figure 3. Described High Pressure Shell comprises base plate and outer cover, and described wireless switching control driver, current transformer body are 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 transformer body. Described outer cover is provided with two output wiring terminal S1, S2, respectively the secondary side of corresponding current transformer body.
Commercial low-voltage current mutual inductor (not being with shell) is added tap by described current transformer body employing to be made, 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, tap also can be set. The no-load voltage ratio of the analog current transformer that the present embodiment is selected is 25/5,10/5, and the no-load voltage ratio of this analog current transformer can be switched between these two kinds of no-load voltage ratios. Certainly, current transformer body also can adopt the analog current transformer with current transformer function.
Described wireless launcher, wireless switching control driver are commercial device. 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. Switch analog functuion if increase to switch analog functuion or reduce, 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 control relay or the function of power-off. Fault simulation control of the present invention can be various ways, can adopt hand switch 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 of wireless switching control 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 decoding chip of PT2272-M4, can receive the remote controller of PT2262 model. This remote controller is wireless launcher of the present invention. Physical circuit is as follows:
Described wireless switching control driver comprises power pack, wireless receiving module (SH9902), decoder module (PT2272-M4), relay control module. Power pack comprises direct current 12V power supply, direct current 12V power supply input wireless switching control driver, and a road direction relay power supply, 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 of decoding chip PT2272 through base resistance respectively, the grounded emitter of triode, the colelctor electrode of triode is connected with one end of the coil of relay, and the other end of the coil of relay connects 12V dc source. 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 multiple data input port, the data of the corresponding button that receives each key-press module input respectively. in the time of 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 produce coded pulse signal 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, directly be connected with the data-in port of decoding chip PT2272 by wireless receiving module SH9902 output port, the confirmation that decoding chip carries out coded address determines whether the signal of corresponding transmitter, only have the geocoding of receiving terminal and the geocoding of transmitting terminal to arrange identical, output 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 output signal control 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 movable 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 movable 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 metering device, 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), transformer 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 movable contact of relay switch contact J2-1 separates with its normally-closed contact, with its normally opened contact adhesive, the movable 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 movable contact of relay switch contact J2-1 separates with its normally opened contact, with its normally-closed contact adhesive, the movable 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 metering device 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. In the time of 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. In the time that impedance exceeds standard, can fall by normal pressure, metering device is exerted an influence, cause metering device inaccurate.
During not according to any button (original state), transformer 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. In the time of relay normally-closed contact J5 and relay normally-closed contact J6 while closure, now for secondary side is closure state (logical state). In the time that three are connected, be correct wiring, will can not affect metering device measure, as three-phase wherein one disconnect time, just as one mutually broken string, will affect metering device measure.
The present invention can reproduce various field failures by fault simulation switch executive circuit, analyzes for student, 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 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 the difference that electric energy meter that different wiring faults causes is measured for student. 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 used 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 ensure 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 control driver (radio remote control switch), but adopt four kinds of hand control switch controls to switch analog functuion. Hand control switch can be arranged on housing. Certainly, also can not adopt radio remote control switch and hand control switch control fault simulation switch executive circuit, but carry out control relay by single-chip microcomputer, PLC module etc., thereby control fault simulation switch executive circuit.
Claims (3)
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 control driver, described wireless switching control driver summation current transformer body 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 with 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 connected with wireless switching control actuator electrical, described wireless launcher is for passing to wireless switching control driver by the failure control signal of operator's input by wireless mode, described wireless switching control driver is for receiving the failure control signal of wireless launcher, 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 switch 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 movable contact of described relay switch contact J1 is electrically connected with the first input end adding, subtractive polarity is switched simulation executive circuit, the normally-closed contact of relay switch contact J1 is electrically connected with the K1 of the secondary side of current transformer body end, the normally opened contact of relay switch contact J1 is electrically connected with the tap of the secondary side of current transformer body, adds, subtractive polarity switches simulation the second input of executive circuit and the K2 of the secondary side of current transformer body and hold and be electrically connected;
Described adding, subtractive polarity is switched simulation executive circuit and is comprised relay switch contact J2-1 and relay switch contact J2-2, the movable contact of relay switch contact J2-1 is electrically connected with the output 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 electrical connection of simulation executive circuit is normally switched in impedance, normally opened contact and the impedance of relay switch contact J2-1 exceed standard, the second input electrical connection of simulation executive circuit is normally switched in impedance, the movable contact of relay switch contact J2-2 is electrically connected with 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 electrical connection of simulation executive circuit is normally switched in impedance, normally-closed contact and the impedance of relay switch contact J2-2 exceed standard, the second input electrical connection of simulation executive circuit is normally switched in impedance.
2. current mulual inductor malfunction simulation and training device according to claim 1, 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.
3. current mulual inductor malfunction simulation and training device according to claim 1, 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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| CN105913712A (en) * | 2016-04-21 | 2016-08-31 | 国网江苏省电力公司职业技能训练基地 | Simulation mutual inductor practical training system |
| CN106501761B (en) * | 2016-12-26 | 2023-07-21 | 烟台东方威思顿电气有限公司 | Three-phase intelligent ammeter simulation detection system |
| CN108196140A (en) * | 2018-01-31 | 2018-06-22 | 国网青海省电力公司西宁供电公司 | A kind of Portable voltage mutual inductor no-load voltage ratio tester |
| 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 |
| CN108777089B (en) * | 2018-06-08 | 2024-03-01 | 国家电网有限公司 | Meter-loading electricity-connection training system with wiring correction and process detection |
| CN111276029A (en) * | 2020-03-25 | 2020-06-12 | 广东电网有限责任公司 | Analog simulation system for alternating current system fault |
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