CN207409170U - Integrate the training device of electrical practice training and low-voltage collecting meter reading failure training - Google Patents

Abstract

The utility model discloses a training device which integrates electrician practical training and low-voltage collective reading faults, and is characterized in that it comprises a basic electrician training platform equipped with a mesh plate and a low-voltage collective reading fault training machine equipped with a mesh plate platform; the first virtual load source is installed inside the basic electrician training platform, and the wiring module is installed on the mesh board of the basic electrician training platform; the second virtual load source is installed inside the low-voltage centralized copy fault training platform A fault finding module is installed on the mesh board of the low-voltage centralized reading fault training platform; the first virtual load source is connected to the first integrated computer, and the second virtual load source is connected to the second integrated computer. The utility model can realize various training and assessment purposes. The bottom plate adopts a multi-functional mesh plate, which is convenient for disassembly and installation of electrical components; secondly, the modular design concept, the device is designed according to the modularization; thirdly, the installation and wiring of all the above electrical appliances are completed without power on. After the installation is completed, the power test can be performed according to the needs; it is safe and reliable.

Description

A training device that integrates electrician training and low-voltage centralized fault training

technical field

The utility model relates to a training device which integrates electrician practical training and low-voltage collection fault training.

Background technique

At present, new electricians often need to be trained before they officially enter the job. In the past, the old masters led new employees to conduct practical operations or theoretical explanations. There was no systematic learning and assessment method. There are often problems that the learning is not in place and problems in the work cannot be solved.

Utility model content

The purpose of the utility model is to provide a training device that integrates electrician training and low-voltage collection fault training. The device of the invention can conduct direct and indirect tests of single-phase electric energy meters, three-phase four-wire metering devices, and photovoltaic electric energy meters. Installation and wiring training; provide fault demonstration of integrated power protectors, simulate different leakage currents, so that electricians can clearly see the phenomenon of tripping of integrated power protectors caused by leakage currents, and at the same time realize line loss simulation, typical Stealing failure simulation. The bottom plate adopts a multi-functional mesh plate, which is convenient for disassembly and installation of electrical components; secondly, the modular design concept, the device is designed according to different modular units with different functions; thirdly, the installation and wiring of all the above electrical appliances can be completed without power on. After the installation is completed, the power test can be performed according to the needs; it is safe and reliable; and the device itself does not provide the mains power supply for the front mesh plate (optional virtual load source) to ensure safety; then add a total power leakage circuit breaker to the device to increase safety protection .

The technical scheme that the utility model adopts in order to solve the problems of the technologies described above is:

A training device integrating electrician training and low-voltage centralized reading fault training, characterized in that: it includes a basic electrician training platform equipped with a mesh plate and a low-voltage centralized copying fault training platform installed with a mesh plate; A first virtual load source is installed inside the basic electrician training platform, and a wiring module is installed on the mesh board of the basic electrician training platform; a second virtual load source is installed inside the low-voltage centralized copy fault training platform, and the low-voltage A fault finding module is installed on the mesh board of the centralized fault training platform; the first virtual load source is connected to the first integrated computer, and the second virtual load source is connected to the second integrated computer.

The first virtual load source is connected to the first external power supply through a line, and the first external power supply includes a first live line L1, a first neutral line N1 and a first ground line PE1, wherein the first live line L1, the first The neutral line N1 is respectively connected to the first virtual load source through lines, and the first grounding line PE1 is grounded through the first grounding terminal block; the first live line L1, the first neutral line N1 and the first virtual load source are The first total leakage protector and the first AC contactor KM1 main contact are also installed on the line; the line between the first total leakage protector and the first AC contactor KM1 main contact and the first equipment start and stop The control loop is connected; the wiring module includes a three-phase meter wiring module, a single-phase meter wiring module and a photovoltaic wiring module, wherein the first virtual load source is respectively connected to the three-phase meter wiring module, the single-phase meter wiring module and the photovoltaic wiring module through the line. The wiring modules are connected; the line between the first dummy load source and the three-phase meter wiring module is sequentially installed with a first voltage and current meter, a first leakage circuit breaker and a first power supply terminal; the first dummy load A second voltage and current meter, a second leakage circuit breaker, and a second power supply terminal are sequentially installed on the line between the source and the single-phase meter wiring module; on the line between the first virtual load source and the photovoltaic wiring module A third voltage and current meter, two third leakage circuit breakers and two third power terminals are installed in sequence.

The first device start-stop control loop includes a first start button SB1, a first power-off button SB2, a first start indicator light, and a first stop indicator light installed above the mesh plate of the basic electrician training platform; The first left emergency stop button on the left side of the electrician training platform; the first right emergency stop button installed on the right side of the basic electrician training platform; the first AC contactor KM1 installed inside the basic electrician training platform; The first start button SB1, the first power-off button SB2, the first left emergency stop button, the first right emergency stop button, and the coils of the first AC contactor KM1 are connected in series through a line; the first AC contactor KM1 is normally open The auxiliary contact and the first start indicator light are connected in series through a line; the first AC contactor KM1 normally closed auxiliary contact and the first stop indicator light are connected in series through a line; the first start button SB1, the first The circuit connected in series between the power-off button SB2, the first left emergency stop button, the first right emergency stop button, and the coil of the first AC contactor KM1 is respectively connected with the normally open auxiliary contact of the first AC contactor KM1, and the first start indication The lines connected in series between the lamps, the lines connected in series between the first AC contactor KM1 normally closed auxiliary contact and the first stop indicator light are connected in parallel, and one end of the parallel connection is between the first live line L and the first dummy load source The other end of the parallel connection is connected with the first zero line N and the line between the first virtual load source; the line between the first start button SB1 and the first power-off button SB2 is in contact with the first AC The line between the normally open auxiliary contact of the device KM1 and the first start indicator light is connected.

The three-phase meter wiring module includes a three-phase four-wire electric meter installed on the mesh board of the basic electrician training platform, a concentrator, a first junction box, a fourth leakage circuit breaker, a first 485 connection terminal, a first load connection terminal, the first current transformer; the first power terminal is connected to the first load terminal through a line, wherein the line between the first power terminal and the first load terminal is sequentially installed with the first current transformer and the fourth leakage circuit breaker; the first current transformer is connected to the first junction box through a line, and the first junction box is respectively connected to a three-phase four-wire system ammeter and a concentrator through a line, and the three-phase four-wire The ammeter and the concentrator are connected to the first 485 connection terminal 29 through the RS485 bus.

The single-phase meter wiring module includes a knife switch installed on the mesh plate of the basic electrician training platform, a first single-phase meter, a fifth leakage circuit breaker, a lamp terminal, a single-control or double-control light switch, a second 485 connection terminal, the second load connection terminal; the second power supply connection terminal is connected to the knife switch through the line, and the knife switch is connected to the first single-phase meter through the line; the first single-phase meter is connected to the first single-phase meter through the line The fifth leakage circuit breaker is connected, and the first single-phase meter is connected to the second 485 connection terminal through the RS485 bus; the fifth leakage circuit breaker is connected to the light connection terminal and the second load connection terminal through lines respectively, and the The lamp connection terminal is connected to the single-control or double-control light switch through a line, and the light connection terminal is also connected to the second load connection terminal through a line.

The photovoltaic wiring module includes a first circuit breaker, a photovoltaic two-way meter, a second circuit breaker, a third circuit breaker, a second single-phase meter, a fourth circuit breaker, a third 485 terminal, and a third load terminal; where 2 One of the third power supply terminals is connected to the first circuit breaker through the line as the mains incoming line; the first circuit breaker is connected to the photovoltaic two-way meter through the line; the photovoltaic two-way meter is connected to the second circuit breaker through the line respectively and the third circuit breaker; the photovoltaic bidirectional meter is also connected to the second single-phase meter and the third 485 terminal through the RS485 bus; the second circuit breaker is connected to the third load terminal through a line; the second The three circuit breakers are connected to the second single-phase meter through the line, and the second single-phase meter is connected to the fourth circuit breaker through the line, and the fourth circuit breaker is connected to the other of the two third power supply terminals as a power generation process. Lines are connected by lines.

The second virtual load source is connected to a second external power supply through a line, and the second external power supply includes a second live line L2, a second neutral line N2 and a second ground line PE2, wherein the second live line L2, the second The neutral line N2 is respectively connected to the second virtual load source through lines, and the second grounding line PE is grounded through the second grounding terminal block; the second live line L2, the second neutral line N2 and the second virtual load source are The second total leakage protector and the second AC contactor KM2 main contact are also installed on the line; the line between the second total leakage protector and the second AC contactor KM2 main contact and the second equipment start and stop The control loops are connected; the fault finding module includes a power integrated protector, a three-phase electric energy meter, a No. 1 single-phase meter, a No. 2 single-phase meter, a No. 3 single-phase meter, a collector, a distribution transformer terminal, a second junction box, Load connection terminal, 485 connection terminal; the second virtual load source passes through the line and power integrated protector, the second junction box, three-phase electric energy meter, No. 1 single-phase meter, No. 2 single-phase meter, No. 3 single-phase The second junction box is connected to the distribution transformer terminal through a line; the distribution transformer terminal, three-phase electric energy meter, No. 1 single-phase meter, No. 2 single-phase meter, No. 3 single-phase meter, and the collector are respectively connected through The RS485 bus is connected to the 485 terminal; the three-phase electric energy meter, No. 1 single-phase meter, No. 2 single-phase meter, and No. 3 single-phase meter are respectively connected to the load terminal through lines.

The start-stop control loop of the second device includes a second start button SB3, a second power-off button SB4, a second start indicator light, and a second stop indicator light installed under the mesh plate of the low-voltage centralized reading fault training platform; The second left emergency stop button on the left side of the low-voltage centralized copy fault training platform; the second right emergency stop button installed on the right side of the low-voltage centralized copy fault training platform; the second AC contactor KM2 installed inside the low-voltage centralized copy fault training platform ; wherein the second start button SB3, the second power-off button SB4, the second left emergency stop button, the second right emergency stop button, and the second AC contactor KM2 coil are connected in series through a line; the second AC contact The normally open auxiliary contact of the switch KM2 and the second start indicator light are connected in series through a line; the second AC contactor KM2 normally closed auxiliary contact and the second stop indicator light are connected in series through a line; the second start button SB3, the second power-off button SB4, the second left emergency stop button, the second right emergency stop button, and the second AC contactor KM2 coil are connected in series with the second AC contactor KM2 normally open auxiliary contact, The line connected in series between the second start indicator lights, the line connected in series between the second AC contactor KM2 normally closed auxiliary contact, and the second stop indicator light are connected in parallel, and one end of the parallel connection is connected to the second live line L2 and the second virtual line The lines between the load sources are connected, and the other end after parallel connection is connected with the neutral line N2 and the line between the second virtual load source; the line between the second start button SB3 and the second power-off button SB4 is connected with the second The line between the normally open auxiliary contact of the AC contactor KM2 and the second start indicator light is connected.

The load connection terminal includes the fourth load connection terminal, the fifth load connection terminal, the sixth load connection terminal and the seventh load connection terminal; the 485 connection terminal includes the fourth 485 connection terminal, the fifth 485 connection terminal, the sixth load connection terminal 485 connecting terminal, the seventh 485 connecting terminal, the eighth 485 connecting terminal and the reserved 485 connecting terminal; a voltage meter and a sixth leakage circuit breaker are installed in sequence on the line between the second virtual load source and the integrated power protector device, the fourth power terminal, the second current transformer, and a fault simulation switch; the integrated power protector is connected to the second junction box through a line, and the line between the integrated power protector and the second junction box A fault simulation switch is installed; the second junction box is connected to the terminal of the distribution transformer through a line; the terminal of the distribution transformer is connected to the reserved 485 terminal through the RS485 bus, and there is a gap between the terminal of the distribution transformer and the reserved 485 terminal A fault simulation switch is installed on the RS485 bus; the line between the second virtual load source and the second junction box, three-phase electric energy meter, No. 1 single-phase meter, No. 2 single-phase meter, and No. 3 single-phase meter The current meters are respectively installed; the three-phase electric energy meter is connected to the fourth load terminal through the line, and the circuit between the three-phase electric energy meter and the fourth load terminal is successively installed with a fault simulation switch, a seventh leakage circuit breaker; the three-phase watt-hour meter is connected to the fourth 485 terminal through the RS485 bus, and a fault simulation switch is installed on the RS485 bus between the three-phase watt-hour meter and the fourth 485 terminal; the three-phase The line between the electric energy meter and the fourth load terminal is connected to the integrated power protector through the line, and the fifth circuit breaker and the leakage demonstration circuit are successively installed on the line; the No. 1 single-phase meter communicates with the fifth through the RS485 bus. 485 terminal connected, and a fault simulation switch is installed on the RS485 bus between the No. 1 single-phase meter and the fifth 485 terminal; the No. 1 single-phase meter is connected to the fifth load terminal through a line, and the A sixth circuit breaker is installed on the line between the No. 1 single-phase meter and the fifth load terminal; the No. 1 single-phase meter is connected to the line between the integrated power protector and the fifth circuit breaker through the line, and A fault analog switch and a seventh circuit breaker are successively installed on the line; the No. 2 single-phase meter is connected to the sixth 485 terminal through the RS485 bus, and the connection between the No. 2 single-phase meter and the sixth 485 terminal A fault analog switch is installed on the RS485 bus; the No. 2 single-phase meter is connected to the sixth load terminal through a line, and an eighth break circuit is installed on the line between the No. 2 single-phase meter and the sixth load terminal device; the No. 2 single-phase meter is connected to the line between the power integrated protector and the fifth circuit breaker through the line, and the fault simulation switch and the ninth circuit breaker are installed in sequence on the line; the No. 3 single-phase meter Connected to the seventh 485 connection terminal through the RS485 bus, and a fault simulation switch is installed on the RS485 bus between the No. 3 single-phase meter and the seventh 485 connection terminal; The phase meter is connected to the seventh load terminal through the line, and a tenth circuit breaker is installed on the line between the No. 3 single-phase meter and the seventh load terminal; the No. 3 single-phase meter is integrated with the electric power through the line The line between the protector and the fifth circuit breaker is connected, and a fault analog switch and the eleventh circuit breaker are installed on the line; the No. 3 single-phase meter is also connected to the collector through the line, and the No. 3 single-phase meter A fault analog switch is installed on the line between the phase meter and the collector; the collector is connected to the eighth 485 connection terminal through the RS485 bus, and the RS485 bus between the collector and the eighth 485 connection terminal is installed with Fault simulation switch.

The leakage demonstration loop includes five parallel demonstration control loops, and the demonstration control loops are connected in series with the leakage parameters of the fault demonstration. The leakage demonstration loop is realized by a computer host computer controlling a virtual load source through software.

The beneficial effects of the utility model are: the device of the utility model can carry out direct and indirect installation and wiring training of the single-phase electric energy meter and the three-phase four-wire metering device; it provides the fault demonstration and simulation of different leakage currents of the power integrated protector , so that the electrician can clearly see the phenomenon of tripping of the power integrated protector caused by the leakage current, and at the same time can realize the simulation of line loss and typical power theft fault simulation. The bottom plate adopts a multi-functional mesh plate, which is convenient for the disassembly and installation of electrical components; secondly, the modular design concept of the training unit, and the device is designed according to the modular design; thirdly, the installation and wiring of all the above-mentioned electrical appliances are completed without power on. After installation, power-on test can be performed according to needs; it is safe and reliable; the device itself does not provide mains power supply (virtual load source is optional) to ensure safety; and then add a total power leakage circuit breaker to the device to increase safety protection. This device is suitable for the following contents: 1. It is suitable for low-voltage single-phase and three-phase metering user meter wiring process training, technical assessment and technical appraisal; 2. It is suitable for using three single-phase meters to replace three-phase four-wire electric energy meter wiring process training, Technical assessment and technical appraisal; 3. It is suitable for single-phase residential lighting circuit wiring process training, technical assessment and technical appraisal; 4. The device can meet the installation training of concentrators, collectors, and electric energy meters, and can meet the requirements between the three Communication wiring training, RS485 communication wiring. 5. It is suitable for fault demonstration of integrated power protectors. 6. The device can simulate different leakage currents, so that the electrician can clearly see the phenomenon of tripping of the power integrated protector caused by the leakage current. 7. The device can simulate the relationship between the on-site metering total sub-table and realize the simulation of line loss at the same time. 8. The device can simulate typical electricity theft faults, such as voltage phase failure, current short circuit, etc. 9. The device can simulate photovoltaic wiring, and can use two single-phase meters or a two-way photovoltaic meter to simulate various wiring modes.

Description of drawings

Fig. 1 is the structural representation of basic electrician training platform of the present invention;

Fig. 2 is the structural representation of the fault training platform for low-voltage centralized copying of the present invention;

Fig. 3 is an enlarged view of part A of Fig. 1;

Fig. 4 is an enlarged view of part B of Fig. 1;

Fig. 5 is an enlarged view of part C of Fig. 2;

Fig. 6 is an enlarged view of part D of 2;

FIG. 7 is an enlarged view of part E of FIG. 2 .

Detailed ways

Example 1

As shown in Figures 1-7, this embodiment is a training device that integrates electrician training and low-voltage centralized fault training, including a basic electrician training platform equipped with a mesh plate and a low-voltage electrician training platform equipped with a mesh plate. Collective copy fault training platform; the first virtual load source 1 is installed inside the basic electrician training platform, and a wiring module is installed on the mesh plate of the basic electrician training platform; the low-voltage centralized copy fault training platform is internally installed with The second virtual load source 45, the fault finding module is installed on the mesh plate of the low-voltage centralized reading fault training platform; the first virtual load source 1 is connected to the first integrated computer (not shown), and the described first virtual load source 1 The second virtual load source 45 is connected with the second integrated computer (not shown in the figure). The virtual load source is controlled by computer software to realize the required control voltage and control current.

The first virtual load source 1 is connected to the first external power supply 2 through a line, and the first external power supply 2 includes a first live line L1, a first neutral line N1 and a first ground line PE1, wherein the first live line L1 , the first neutral line N1 are respectively connected to the first virtual load source 1 through lines, and the first grounding line PE1 is grounded through the first grounding terminal block 20; the first live line L1, the first neutral line N1 and the first virtual load source The circuit between the load sources 1 is also equipped with a first total leakage protector 16 and a first AC contactor KM1 main contact 17; the first total leakage protector 16 and the first AC contactor KM1 main contact 17 The line between them is connected with the first equipment start-stop control loop 3; the wiring module includes a three-phase meter wiring module 4, a single-phase meter wiring module 5 and a photovoltaic wiring module 6, wherein the first virtual load source 1 passes through The line is connected to the three-phase meter connection module 4, the single-phase meter connection module 5 and the photovoltaic connection module 6; the first voltage and current metering is sequentially installed on the line between the first virtual load source 1 and the three-phase meter connection module 4 Table 7, the first leakage circuit breaker 8 and the first power terminal 9; the line between the first virtual load source 1 and the single-phase meter connection module 5 is sequentially installed with a second voltage and current meter 10, a second Leakage circuit breaker 11 and second power connection terminal 12; a third voltage and current meter 13 and two third leakage circuit breakers are sequentially installed on the line between the first virtual load source 1 and the photovoltaic connection module 6 14 and two third power terminals 15.

The first device start-stop control circuit 3 includes a first start button SB1, a first power-off button SB2, a first start indicator light 23, and a first stop indicator light 24 installed above the mesh plate of the basic electrician training platform; The first left emergency stop button 21 installed on the left side of the basic electrician training platform; the first right emergency stop button 22 installed on the right side of the basic electrician training platform; the first AC contactor installed inside the basic electrician training platform KM1; wherein the first start button SB1, the first power-off button SB2, the first left emergency stop button 21, the first right emergency stop button 22, and the coil of the first AC contactor KM1 are connected in series through a line; the first An AC contactor KM1 normally open auxiliary contact and the first start indicator light 23 are connected in series through a line; the first AC contactor KM1 normally closed auxiliary contact and the first stop indicator light 24 are connected in series through a line; The first start button SB1, the first power-off button SB2, the first left emergency stop button 21, the first right emergency stop button 22, and the first AC contactor KM1 coil are connected in series with the first AC contactor respectively. The line connected in series between the KM1 normally open auxiliary contact and the first start indicator light 23, the line connected in series between the first AC contactor KM1 normally closed auxiliary contact and the first stop indicator light 24 are connected in parallel, and one end of the parallel connection It is connected to the line between the first live line L and the first virtual load source 1, and the other end after parallel connection is connected to the line between the first neutral line N and the first virtual load source 1; the first start button SB1, The line between the first power-off button SB2 is connected to the line between the normally open auxiliary contact of the first AC contactor KM1 and the first start indicator light 23 .

The three-phase meter wiring module 4 includes a three-phase four-wire electric meter 25, a concentrator 26, a first junction box 27, a fourth leakage circuit breaker 28, and a first 485 connection terminal installed on the mesh board of the basic electrician training platform. 29. The first load connection terminal 30 and the first current transformer 44; the first power connection terminal 9 is connected to the first load connection terminal 30 through a line, wherein the connection between the first power connection terminal 9 and the first load connection terminal 30 The first current transformer 44 and the fourth leakage circuit breaker 28 are installed in sequence on the line between; the first current transformer 44 is connected with the first junction box 27 through the line, and the first junction box 27 is connected with the first junction box 27 through the line respectively. The three-phase four-wire ammeter 25 is connected to the concentrator 26, and the three-phase four-wire ammeter 25 and the concentrator 26 are connected to the first 485 connection terminal 29 through the RS485 bus.

The single-phase meter wiring module 5 includes a knife switch 31 installed on the mesh plate of the basic electrician training platform, a first single-phase meter 32, a fifth leakage circuit breaker 33, a lamp terminal 34, a single control or a double control Light switch 35, the second 485 connection terminal 36, the second load connection terminal 37; the second power connection terminal 12 is connected to the knife switch 31 through the line, and the knife switch 31 is connected to the first single-phase meter 32 through the line connected; the first single-phase meter 32 is connected to the fifth leakage circuit breaker 33 through a line, and the first single-phase meter 32 is connected to the second 485 terminal 36 through the RS485 bus; the fifth leakage circuit breaker 33 Connect to the lamp terminal 34 and the second load terminal 37 through lines respectively, the lamp terminal 34 is connected to the single-control or double-control light switch 35 through the line, and the light terminal 34 is also connected to the second load through the line Terminal 37 is connected.

The photovoltaic wiring module 6 includes a first circuit breaker 18, a photovoltaic two-way meter 19, a second circuit breaker 38, a third circuit breaker 39, a second single-phase meter 40, a fourth circuit breaker 41, a third 485 connection terminal 42, The third load connection terminal 43; wherein one of the two third power supply connection terminals 15 is connected to the first circuit breaker 18 through the line as the mains incoming line; the first circuit breaker 18 is connected to the photovoltaic bidirectional meter 19 through the line; The photovoltaic two-way meter 19 is connected to the second circuit breaker 38 and the third circuit breaker 39 through lines respectively; the photovoltaic two-way meter 19 is also connected to the second single-phase meter 40 and the third 485 terminal 42 respectively through the RS485 bus; The second circuit breaker 38 is connected to the third load terminal 43 through a line; the third circuit breaker 39 is connected to the second single-phase meter 40 through a line, and the second single-phase meter 40 is connected to the fourth circuit breaker through a line The circuit breaker 41 is connected, and the fourth circuit breaker 41 is connected to the other of the two third power supply terminals 15 as a power generation incoming line through a line.

The second virtual load source 45 is connected to a second external power supply 46 through a line, and the second external power supply 46 includes a second live line L2, a second neutral line N2 and a second ground line PE2, wherein the second live line L2 , the second neutral line N2 are respectively connected to the second virtual load source 45 through lines, and the second grounding line PE is grounded through the second grounding terminal block 47; the second live line L2, the second neutral line N2 and the second virtual load source The second total leakage protector 48 and the second AC contactor KM2 main contact 49 are also installed on the line between the load sources 45; the second total leakage protector 48 and the second AC contactor KM2 main contact 49 The line between is connected with the second equipment start-stop control loop 50; the fault finding module includes a power integrated protector 51, a three-phase electric energy meter 52, a No. 1 single-phase meter 53, a No. 2 single-phase meter 54, and a No. 3 single-phase meter. Phase meter 55, collector 56, distribution transformer terminal 57, second junction box 58, load connection terminal, 485 connection terminal; the second virtual load source 45 passes through line and power integrated protector 51, second junction box 58 respectively , three-phase electric energy meter 52, No. 1 single-phase meter 53, No. 2 single-phase meter 54, and No. 3 single-phase meter 55 are connected; the second junction box 58 is connected to the distribution transformer terminal 57 through a line; the distribution transformer terminal 57. The three-phase electric energy meter 52, the No. 1 single-phase meter 53, the No. 2 single-phase meter 54, the No. 3 single-phase meter 55, and the collector 56 are respectively connected to the terminal 485 through the RS485 bus; the three-phase electric energy meter 52, No. 1 single-phase meter 53 , No. 2 single-phase meter 54 , and No. 3 single-phase meter 55 are respectively connected to the load terminals through lines.

The second equipment start-stop control circuit 50 includes a second start button SB3, a second power-off button SB4, a second start indicator light 59, and a second stop indicator light 60 installed above the mesh plate of the low-voltage centralized reading fault training platform. ; The second left emergency stop button 61 installed on the left side of the low-voltage collective copy fault training platform; the second right emergency stop button 62 installed on the right side of the low-voltage collective copy fault training platform; Two AC contactors KM2; wherein the second start button SB3, the second power-off button SB4, the second left emergency stop button 61, the second right emergency stop button 62, and the coils of the second AC contactor KM2 are connected in series through lines The second AC contactor KM2 normally open auxiliary contact and the second start indicator light 59 are connected in series through a line; the second AC contactor KM2 normally closed auxiliary contact and the second stop indicator light 60 are connected in series The lines are connected in series; the lines connected in series between the second start button SB3, the second power-off button SB4, the second left emergency stop button 61, the second right emergency stop button 62, and the coils of the second AC contactor KM2 are respectively connected to the second AC contactor KM2 coil. The line connected in series between the normally open auxiliary contact of the second AC contactor KM2 and the second start indicator light 59, and the line connected in series between the normally closed auxiliary contact of the second AC contactor KM2 and the second stop indicator light 60 are connected in parallel, And after parallel connection, one end is connected with the circuit between the second fire wire L2 and the second virtual load source 45, and the other end after parallel connection is connected with the circuit between the neutral line N2 and the second virtual load source 45; the second start button The line between SB3 and the second power-off button SB4 is connected to the line between the normally open auxiliary contact of the second AC contactor KM2 and the second start indicator light 59 .

The load connection terminals include the fourth load connection terminal 63, the fifth load connection terminal 64, the sixth load connection terminal 65 and the seventh load connection terminal 66; the 485 connection terminals include the fourth 485 connection terminal 67, the fifth 485 connection terminal Connection terminal 68, sixth 485 connection terminal 69, seventh 485 connection terminal 70, eighth 485 connection terminal 71 and reserved 485 connection terminal 72; the line between the second virtual load source 45 and the integrated power protector 51 A voltage meter 73, a sixth leakage circuit breaker 74, a fourth power supply terminal 75, a second current transformer 76, and fault simulation switches (K4, K5, K6, K7) are installed in sequence; the integrated power protector 51 It is connected with the second junction box 58 through a line, and a fault simulation switch (K1, K2, K3) is installed on the line between the integrated power protector 51 and the second junction box 58; the second junction box 58 and The distribution transformer terminal 57 is connected through a line; the distribution transformer terminal 57 is connected to the reserved 485 terminal 72 through the RS485 bus, and a fault simulation is installed on the RS485 bus between the distribution transformer terminal 57 and the reserved 485 terminal 72 Switches (K8, K9); between the second virtual load source 45 and the second junction box 58, three-phase electric energy meter 52, No. 1 single-phase meter 53, No. 2 single-phase meter 54, and No. 3 single-phase meter 55 Current meters 77 are respectively installed on the lines; the three-phase watt-hour meter 52 is connected to the fourth load terminal 63 through the line, and the line between the three-phase watt-hour meter 52 and the fourth load terminal 63 is sequentially Fault simulation switches (K10, K11, K12) and a seventh leakage circuit breaker 78 are installed; the three-phase electric energy meter 52 is connected to the fourth 485 terminal 67 through the RS485 bus, and the three-phase electric energy meter 52 is connected to the fourth A fault analog switch (K13, K14) is installed on the RS485 bus between the 485 terminals 67; the line between the three-phase electric energy meter 52 and the fourth load terminal 63 is connected to the integrated power protector 51 through the line, and The fifth circuit breaker 79 and the leakage demonstration circuit are successively installed on this line; the No. 1 single-phase meter 53 is connected to the fifth 485 terminal 68 through the RS485 bus, and the No. 1 single-phase meter 53 is connected to the fifth 485 A fault analog switch (K16, K17) is installed on the RS485 bus between terminals 68; the No. 1 single-phase meter 53 is connected to the fifth load terminal 64 through a line, and the No. 1 single-phase meter 53 is connected to the fifth A sixth circuit breaker 80 is installed on the line between the load terminals 64; the No. 1 single-phase meter 53 is connected to the line between the power integrated protector 51 and the fifth circuit breaker 79 through the line, and the line is sequentially A fault analog switch (K15) and a seventh circuit breaker 81 are installed; the No. 2 single-phase meter 54 is connected to the sixth 485 terminal 69 through the RS485 bus, and the No. 2 single-phase meter 54 is connected to the sixth 485 terminal installed on the RS485 bus between 69 Faulty analog switches (K19, K20); the No. 2 single-phase meter 54 is connected to the sixth load terminal 65 through a line, and the line between the No. 2 single-phase meter 54 and the sixth load terminal 65 An eighth circuit breaker 82 is installed; the No. 2 single-phase meter 54 is connected to the line between the integrated power protector 51 and the fifth circuit breaker 79 through a line, and a fault simulation switch (K18), The ninth circuit breaker 83; the No. 3 single-phase meter 55 is connected to the seventh 485 terminal 70 through the RS485 bus, and the RS485 bus between the No. 3 single-phase meter 55 and the seventh 485 terminal 70 is installed with Fault simulation switches (K22, K23); the No. 3 single-phase meter 55 is connected to the seventh load terminal 66 through a line, and the No. 3 single-phase meter 55 and the seventh load terminal 66 are installed on the line between There is a tenth circuit breaker 84; the No. 3 single-phase meter 55 is connected to the line between the power integrated protector 51 and the fifth circuit breaker 79 through a line, and the line is equipped with a fault simulation switch (K21), a tenth A circuit breaker 85; the No. 3 single-phase meter 55 is also connected to the collector 56 through a line, and a fault simulation switch (K24) is installed on the line between the No. 3 single-phase meter 55 and the collector 56; The collector 56 is connected to the eighth 485 connection terminal 71 through the RS485 bus, and a fault simulation switch is installed on the RS485 bus between the collector 56 and the eighth 485 connection terminal 71; The demo control loop 86 is connected in series with the fault demo leakage parameters (K27, K28, K29, K30, K31).

A method for using a training device that integrates electrician training and low-voltage centralized reading fault training, including the following steps: 1) Using the first external power supply 2 and/or the second external power supply 46 to provide the basic electrician training platform and/or The low-voltage centralized copying fault training platform is powered on, and can be divided into batches, or at the same time, trainers can be trained or tested on basic electrician and low-voltage centralized copying faults;

2) Run the integrated computer system on the basic electrician training platform; a) Open the first power supply terminal 9 to de-energize the wiring module, dismantle all the components and lines in the wiring module, and remove the wires from the basic electrician training platform. Remove the board for use by trainers; open the teacher login interface, enter and set the installation diagram and judgment method of the wiring module, the setting and training of the wiring module here can be three-phase meter wiring module 4, single-phase meter wiring module 5 and photovoltaic wiring module 6 at the same time, or you can choose one or two of them; b) The trainer enters and opens the installation diagram of the wiring module set by the teacher through the login interface of the trainer, and starts to carry out the basic electrician training platform according to the diagram The wiring of each component and circuit on the mesh board (that is, the wiring of the wiring module); c) After the installation is completed, close the first power supply terminal 9 to power on the wiring module, and submit it using the computer system; The teacher logs in to the interface and uses the judgment method to detect whether the components and lines in the wiring module on the mesh board are connected according to the connection method described in this embodiment under the power-on state. The interface points out and scores;

3) Run the integrated computer system on the low-voltage centralized copying fault training platform; a) Close the fourth power terminal 75 to power on the fault finding module; open the teacher login interface, enter and set the low-voltage centralized copying fault training platform mesh board The fault points and judgment methods in the connected fault finding module, there can be one or more fault points; b) The trainers use electric pens and other testing equipment to check the faults in the fault finding module on the mesh board of the low-voltage centralized copy fault training station point, and then enter the system through the trainer’s login interface, point out the fault and submit it, and take the location of the fault simulation switch as the fault point; c) By entering the teacher’s login interface, use the judgment method to detect the fault finding module on the mesh board under the power-on state Whether the components and lines in the test are connected according to the connection method described in this embodiment, the system judges whether it is completed, points out the error on the computer interface, and scores it.

The device in this embodiment can carry out direct and indirect installation and wiring training of single-phase electric energy meters and three-phase four-wire metering devices; it provides fault demonstrations of power integrated protectors and simulates different leakage currents, allowing electricians to clearly see The phenomenon of tripping of the power integrated protector caused by the leakage current can be realized, and at the same time, it can realize the simulation of line loss and typical electricity theft fault simulation. The bottom plate adopts a multi-functional mesh plate, which is convenient for disassembly and installation of electrical components; secondly, the modular design concept, the device is designed according to the modularization; thirdly, the installation and wiring of all the above electrical appliances are completed without power on. After installation, power-on test can be performed according to needs; it is safe and reliable; the device itself does not provide mains power supply (virtual load source is optional) to ensure safety; and then add a total power leakage circuit breaker to the device to increase safety protection. This device is suitable for the following contents: 1. It is suitable for low-voltage single-phase and three-phase metering user meter wiring process training, technical assessment and technical appraisal; 2. It is suitable for using three single-phase meters to replace three-phase four-wire electric energy meter wiring process training, Technical assessment and technical appraisal; 3. It is suitable for single-phase residential lighting circuit wiring process training, technical assessment and technical appraisal; 4. The device can meet the installation training of concentrators, collectors, and electric energy meters, and can meet the requirements between the three Communication wiring training, RS485 communication wiring. 5. It is suitable for fault demonstration of integrated power protectors. 6. The device can simulate different leakage currents, so that the electrician can clearly see the phenomenon of tripping of the power integrated protector caused by the leakage current. 7. The device can simulate the relationship between the on-site metering total sub-table and realize the simulation of line loss at the same time. 8. The device can simulate typical electricity theft faults, such as voltage phase failure, current short circuit, etc. 9. The device can simulate photovoltaic wiring, and can use two single-phase meters or a two-way photovoltaic meter to simulate various wiring modes.

Claims (10)

1. A training device integrating electrician training and low-voltage centralized reading fault training, characterized in that: it includes a basic electrician training platform equipped with a mesh plate and a low-voltage centralized reading fault training platform equipped with a mesh plate; A first virtual load source (1) is installed inside the basic electrician training platform, and a wiring module is installed on the mesh board of the basic electrician training platform; a second virtual load is installed inside the low-voltage centralized copy fault training platform source (45), the fault finding module is installed on the mesh board of the low-voltage centralized reading fault training platform; the first virtual load source (1) is connected to the first integrated computer, and the second virtual load source ( 45) Connect with the second integrated computer. 2. The training device integrating electrician training and low-voltage centralized reading fault training as claimed in claim 1, characterized in that: the first virtual load source (1) is connected to the first external power supply (2) through a line, The first external power supply (2) includes a first live wire L1, a first neutral wire N1 and a first ground wire PE1, wherein the first live wire L1 and the first neutral wire N1 are connected to the first virtual load source ( 1) connected, the first grounding line PE1 is grounded through the first grounding terminal block (20); the line between the first live line L1, the first neutral line N1 and the first dummy load source (1) is also installed There is a first general leakage protector (16) and the first AC contactor KM1 main contact (17); between the first general leakage protector (16) and the first AC contactor KM1 main contact (17) The line is connected to the first equipment start-stop control circuit (3); the wiring module includes a three-phase meter wiring module (4), a single-phase meter wiring module (5) and a photovoltaic wiring module (6), wherein the first The virtual load source (1) is respectively connected to the three-phase meter wiring module (4), the single-phase meter wiring module (5) and the photovoltaic wiring module (6) through lines; the first virtual load source (1) is connected to the three-phase meter A first voltage and current meter (7), a first leakage circuit breaker (8) and a first power supply terminal (9) are sequentially installed on the line between the wiring modules (4); the first dummy load source (1 ) and the single-phase meter wiring module (5) are sequentially installed with a second voltage and current meter (10), a second leakage circuit breaker (11) and a second power terminal (12); the first A third voltage and current meter (13), two third leakage circuit breakers (14) and two third power supply wirings are sequentially installed on the line between the virtual load source (1) and the photovoltaic wiring module (6) terminal (15). 3. The training device integrating electrician training and low-voltage centralized reading fault training as claimed in claim 2, characterized in that: the first equipment start-stop control circuit (3) includes a mesh installed on the basic electrician training platform The first start button SB1, the first power-off button SB2, the first start indicator light (23), and the first stop indicator light (24) above the board; the first left emergency stop button installed on the left side of the basic electrician training platform (21); the first right emergency stop button (22) installed on the right side of the basic electrician training platform; the first AC contactor KM1 installed inside the basic electrician training platform; wherein the first start button SB1, the second A power-off button SB2, the first left emergency stop button (21), the first right emergency stop button (22), and the coil of the first AC contactor KM1 are connected in series through a line; the first AC contactor KM1 is normally open auxiliary The contact and the first start indicator light (23) are connected in series through a line; the first AC contactor KM1 normally closed auxiliary contact and the first stop indicator light (24) are connected in series through a line; the first start Button SB1, first power-off button SB2, first left emergency stop button (21), first right emergency stop button (22), first AC contactor KM1 coil connected in series with the first AC contactor The line connected in series between the KM1 normally open auxiliary contact and the first start indicator light (23), and the line connected in series between the first AC contactor KM1 normally closed auxiliary contact and the first stop indicator light (24) are connected in parallel, And after parallel connection, one end is connected to the line between the first live line L and the first virtual load source (1), and the other end after parallel connection is connected to the line between the first neutral line N and the first virtual load source (1); The line between the first start button SB1 and the first power-off button SB2 is connected to the line between the normally open auxiliary contact of the first AC contactor KM1 and the first start indicator light (23). 4. The training device integrating electrician training and low-voltage centralized reading fault training as claimed in claim 2, characterized in that: the three-phase meter wiring module (4) includes a mesh plate installed on the basic electrician training platform Three-phase four-wire ammeter (25), concentrator (26), first junction box (27), fourth leakage circuit breaker (28), first 485 terminal (29), first load terminal (30) . A first current transformer (44); the first power terminal (9) is connected to the first load terminal (30) through a line, wherein the first power terminal (9) is connected to the first load terminal (30) ) are installed in turn on the line between the first current transformer (44) and the fourth leakage circuit breaker (28); the first current transformer (44) is connected to the first junction box (27) through the line, so The first junction box (27) is respectively connected to the three-phase four-wire system electric meter (25) and the concentrator (26) through lines, and the three-phase four-wire system electric meter (25) and the concentrator (26) are connected through RS485 The bus is connected to the first 485 connection terminal (29). 5. The training device integrating electrician training and low-voltage centralized reading fault training as claimed in claim 2, characterized in that: the single-phase meter wiring module (5) includes a mesh plate installed on the basic electrician training platform The knife switch (31), the first single-phase meter (32), the fifth leakage circuit breaker (33), the lamp terminal (34), the single-control or double-control light switch (35), the second 485 terminal ( 36), the second load terminal (37); the second power terminal (12) is connected to the knife switch (31) through the line, and the knife switch (31) is connected to the first single-phase meter ( 32) connected; the first single-phase meter (32) is connected to the fifth leakage circuit breaker (33) through a line, and the first single-phase meter (32) is connected to the second 485 terminal (36) through the RS485 bus connected; the fifth leakage circuit breaker (33) is respectively connected to the lamp terminal (34) and the second load terminal (37) through the line, and the lamp terminal (34) is connected to the single-control or double-control lamp through the line The switch (35) is connected, and the lamp connection terminal (34) is also connected to the second load connection terminal (37) through a line. 6. The training device integrating electrician training and low-voltage centralized reading fault training as claimed in claim 2, characterized in that: the photovoltaic wiring module (6) includes a first circuit breaker (18), a photovoltaic two-way meter (19 ), the second circuit breaker (38), the third circuit breaker (39), the second single-phase meter (40), the fourth circuit breaker (41), the third 485 terminal (42), the third load terminal ( 43); one of the two third power supply terminals (15) is connected to the first circuit breaker (18) through the line as the mains incoming line; the first circuit breaker (18) is connected to the photovoltaic bidirectional meter ( 19) are connected; the photovoltaic two-way meter (19) is connected to the second circuit breaker (38) and the third circuit breaker (39) respectively through lines; the photovoltaic two-way meter (19) is also connected to the second unit through the RS485 bus The phase meter (40) is connected to the third 485 terminal (42); the second circuit breaker (38) is connected to the third load terminal (43) through the line; the third circuit breaker (39) is connected to the third load terminal (43) through the line The second single-phase meter (40) is connected, and the second single-phase meter (40) is connected to the fourth circuit breaker (41) through a line, and the fourth circuit breaker (41) is connected to two third power supply terminals ( The other one in 15) is connected through the line as the power generation incoming line. 7. The training device integrating electrician training and low-voltage centralized reading fault training as claimed in claim 1, characterized in that: the second virtual load source (45) is connected to the second external power supply (46) through a line, The second external power supply (46) includes a second live wire L2, a second neutral wire N2 and a second ground wire PE2, wherein the second live wire L2 and the second neutral wire N2 are connected to the second virtual load source ( 45), the second grounding line PE is grounded through the second grounding terminal block (47); the line between the second live line L2, the second neutral line N2 and the second virtual load source (45) is also installed There is a second total leakage protector (48) and a second AC contactor KM2 main contact (49); between the second total leakage protector (48) and the second AC contactor KM2 main contact (49) The line is connected to the second equipment start-stop control circuit (50); the fault finding module includes a power integrated protector (51), a three-phase electric energy meter (52), a No. 1 single-phase meter (53), and a No. 2 single-phase Meter (54), No. 3 single-phase meter (55), collector (56), distribution transformer terminal (57), second junction box (58), load terminal, 485 terminal; the second virtual load source (45) through the line and power integrated protector (51), the second junction box (58), the three-phase electric energy meter (52), the No. 1 single-phase meter (53), the No. 2 single-phase meter (54), and the 3 No. single-phase meter (55); the second junction box (58) is connected to the distribution transformer terminal (57) through a line; the distribution transformer terminal (57), three-phase electric energy meter (52), No. 1 single-phase Meter (53), No. 2 single-phase meter (54), No. 3 single-phase meter (55), and collector (56) are respectively connected to 485 terminals through the RS485 bus; the three-phase electric energy meter (52), No. 1 The single-phase meter (53), the No. 2 single-phase meter (54), and the No. 3 single-phase meter (55) are respectively connected to the load terminals through lines. 8. The training device integrating electrician training and low-voltage centralized copying fault training as claimed in claim 7, characterized in that: the second equipment start-stop control loop (50) includes a network installed on the low-voltage centralized copying fault training platform The second start button SB3, the second power-off button SB4, the second start indicator light (59), and the second stop indicator light (60) above the orifice plate; Stop button (61); the second right emergency stop button (62) installed on the right side of the low-voltage centralized copying fault training platform; the second AC contactor KM2 installed inside the low-voltage centralized copying fault training platform; wherein the second start The button SB3, the second power-off button SB4, the second left emergency stop button (61), the second right emergency stop button (62), and the coil of the second AC contactor KM2 are connected in series through a line; the second AC contactor The KM2 normally open auxiliary contact and the second start indicator light (59) are connected in series through a line; the second AC contactor KM2 normally closed auxiliary contact and the second stop indicator light (60) are connected in series through a line; Describe the second start button SB3, the second power-off button SB4, the second left emergency stop button (61), the second right emergency stop button (62), and the second AC contactor KM2 coil connected in series with the first The line connected in series between the normally open auxiliary contact of the second AC contactor KM2 and the second start indicator light (59), and the line connected in series between the normally closed auxiliary contact of the second AC contactor KM2 and the second stop indicator light (60) The lines are connected in parallel, and after parallel connection, one end is connected to the line between the second live line L2 and the second virtual load source (45), and the other end after parallel connection is connected to the line between the neutral line N2 and the second virtual load source (45) connected; the line between the second start button SB3 and the second power-off button SB4 is connected to the line between the normally open auxiliary contact of the second AC contactor KM2 and the second start indicator light (59). 9. The training device integrating electrician training and low-voltage centralized reading fault training as claimed in claim 7, characterized in that: the load terminals include the fourth load terminal (63), the fifth load terminal (64 ), the sixth load terminal (65) and the seventh load terminal (66); the 485 terminal includes the fourth 485 terminal (67), the fifth 485 terminal (68), the sixth 485 terminal ( 69), the seventh 485 terminal (70), the eighth 485 terminal (71) and the reserved 485 terminal (72); between the second virtual load source (45) and the integrated power protector (51) A voltage meter (73), a sixth leakage circuit breaker (74), a fourth power terminal (75), a second current transformer (76), and a fault simulation switch are sequentially installed on the circuit; the integrated power protector (51) is connected to the second junction box (58) through a line, and a fault simulation switch is installed on the line between the integrated power protector (51) and the second junction box (58); the second junction box (58) is connected to the distribution transformer terminal (57) through a line; the distribution transformer terminal (57) is connected to the reserved 485 terminal (72) through the RS485 bus, and the distribution transformer terminal (57) is connected to the reserved 485 wiring A fault simulation switch is installed on the RS485 bus between the terminals (72); the second virtual load source (45) is connected to the second junction box (58), the three-phase electric energy meter (52), and the No. 1 single-phase meter (53 ), the No. 2 single-phase meter (54), and the No. 3 single-phase meter (55) are respectively equipped with current meters (77); the three-phase electric energy meter (52) is connected to the fourth load through the line The terminals (63) are connected, and a fault simulation switch and a seventh leakage circuit breaker (78) are sequentially installed on the line between the three-phase electric energy meter (52) and the fourth load terminal (63); The electric energy meter (52) is connected to the fourth 485 terminal (67) through the RS485 bus, and a fault simulation switch is installed on the RS485 bus between the three-phase electric energy meter (52) and the fourth 485 terminal (67); The line between the three-phase electric energy meter (52) and the fourth load terminal (63) is connected to the integrated power protector (51) through the line, and the fifth circuit breaker (79), leakage current Demonstration circuit; the No. 1 single-phase meter (53) is connected to the fifth 485 terminal (68) through the RS485 bus, and the connection between the No. 1 single-phase meter (53) and the fifth 485 terminal (68) A fault analog switch is installed on the RS485 bus; the No. 1 single-phase meter (53) is connected to the fifth load terminal (64) through a line, and the No. 1 single-phase meter (53) is connected to the fifth load terminal ( The sixth circuit breaker (80) is installed on the line between 64); the No. 1 single-phase meter (53) is connected to the line between the power integrated protector (51) and the fifth circuit breaker (79) through the line , and the line The fault analog switch and the seventh circuit breaker (81) are installed in sequence; the No. 2 single-phase meter (54) is connected to the sixth 485 terminal (69) through the RS485 bus, and the No. 2 single-phase meter (54 ) and the sixth 485 terminal (69) are installed on the RS485 bus between fault simulation switches; the No. 2 single-phase meter (54) is connected to the sixth load terminal (65) through a line, and the No. 2 An eighth circuit breaker (82) is installed on the line between the single-phase meter (54) and the sixth load terminal (65); the No. 2 single-phase meter (54) passes through the line and power integrated protector (51) , the line between the fifth circuit breaker (79), and the fault simulation switch and the ninth circuit breaker (83) are successively installed on the line; the No. 3 single-phase meter (55) communicates with the seventh 485 through the RS485 bus The connecting terminals (70) are connected, and a fault simulation switch is installed on the RS485 bus between the No. 3 single-phase meter (55) and the seventh 485 connecting terminal (70); the No. 3 single-phase meter (55) passes The line is connected to the seventh load terminal (66), and a tenth circuit breaker (84) is installed on the line between the No. 3 single-phase meter (55) and the seventh load terminal (66); The No. single-phase meter (55) is connected to the line between the power integrated protector (51) and the fifth circuit breaker (79) through the line, and the fault simulation switch and the eleventh circuit breaker (85) are installed on the line; The No. 3 single-phase meter (55) is also connected to the collector (56) through a line, and a fault simulation switch is installed on the line between the No. 3 single-phase meter (55) and the collector (56); The collector (56) is connected to the eighth 485 terminal (71) through the RS485 bus, and a fault simulation switch is installed on the RS485 bus between the collector (56) and the eighth 485 terminal (71); The leakage demonstration circuit includes five parallel demonstration control loops (86), and the demonstration control loops (86) are connected in series with the fault demonstration leakage parameters (K27, K28, K29, K30, K31). 10. The training device integrating electrician training and low-voltage centralized reading fault training as claimed in claim 9, characterized in that: the leakage demonstration circuit includes 5 parallel resistors (86), and the resistors (86) and The fault simulation switch is connected in series.