CN113671897A - Electrical test training system - Google Patents
Electrical test training system Download PDFInfo
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- CN113671897A CN113671897A CN202110988160.1A CN202110988160A CN113671897A CN 113671897 A CN113671897 A CN 113671897A CN 202110988160 A CN202110988160 A CN 202110988160A CN 113671897 A CN113671897 A CN 113671897A
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/054—Input/output
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/183—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for circuits
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B9/00—Simulators for teaching or training purposes
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/11—Plc I-O input output
- G05B2219/1103—Special, intelligent I-O processor, also plc can only access via processor
Abstract
The invention discloses an electrical test practical training system which comprises a voltage regulation and withstand voltage test loop, a short circuit test loop, an on-off test loop, a motor start-stop test loop and a motor forward and reverse rotation test loop which are connected with a test power supply loop, wherein each test loop is connected with a central controller PLC. The invention adopts PLC as the main controller, the automation degree is high, the control is reliable, each test adopts the mode of combining the remote PLC control and the local control, and the safety of the practical training personnel and the practical training system can be well ensured; the invention adopts the slide rheostat and the copper wire self-made inductor to form loop impedance, the size can be linearly adjusted, the requirements of different test currents and power factors are met, the shunt is adopted to collect the test current, the precision is high, the cost is low, and the realization is easy. The invention can simulate part of low-voltage electrical product inspection and detection tests, and can also provide a practical training platform for electrical product inspection and detection beginners to cultivate application talents.
Description
Technical Field
The invention relates to the technical field of electric appliance detection, in particular to an electric test practical training system.
Background
In recent years, with the development of smart power grids, higher requirements are put on power supply and distribution equipment, and the development and improvement of electrical equipment need to continuously perfect product design and finally finalize production through analysis of a large amount of test data.
In order to obtain accurate test data, the professional ability of detection personnel of an inspection and detection mechanism needs to be improved; the ability of the quality detection personnel of the electric appliance products is improved, a large number of tests are needed to exercise, and many electrical tests are destructive tests, so that the test cost is high, and the electric appliance product quality detection personnel also have certain dangers for beginners. Therefore, a safe, reliable, economical and practical electrical test practical training system needs to be invented to simulate part of electrical tests and train the operation level of practitioners.
Disclosure of Invention
The invention aims to provide an electrical test practical training system which integrates a voltage regulation and withstand voltage test, a short circuit test, an on-off test, a motor start-stop test and a motor forward and reverse rotation test, adopts a mode of combining remote PLC control and on-site control, provides a training platform for electrical product detection personnel and improves the operation skill.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an electrical test training system comprises a voltage regulation and withstand voltage test loop, a short circuit test loop, an on-off test loop, a motor start-stop test loop and a motor forward and reverse rotation test loop which are connected with a test power supply loop, wherein each test loop is connected with a central controller PLC;
the voltage regulating and withstand voltage testing loop comprises a voltage regulating test circuit breaker, a voltage reducing test contactor, an electric voltage regulator, a withstand voltage test circuit breaker, a boosting transformer, a withstand voltage test sample and a first grounding system which are sequentially connected in series, wherein the voltage reducing test contactor is connected with the boosting test contactor in parallel;
the short-circuit test loop comprises a short-circuit test accompanying article contactor, a short-circuit test loop resistor, a short-circuit test loop inductor, a short-circuit test shunt and a short-circuit test article which are sequentially connected in series;
the on-off test loop comprises an on-off test loop front-stage resistor, an on-off test loop front-stage inductor, an on-off test accompanying sample contactor, an on-off test sample, an on-off test shunt, an on-off test loop rear-stage resistor, an on-off test loop rear-stage inductor and a second grounding system which are sequentially connected in series;
the motor start-stop test loop comprises a start-stop test circuit breaker, a start-stop test contactor, a start-stop test thermal relay, a start-stop test shunt and a start-stop test motor which are sequentially connected in series;
the motor positive and negative rotation test loop comprises a positive and negative rotation test circuit breaker, a positive rotation test contactor, a positive and negative rotation test thermal relay, a positive and negative rotation test current divider and a positive and negative rotation test motor which are sequentially connected in series, wherein the positive rotation test contactor is connected with the negative rotation test contactor in parallel.
Preferably, the central controller PLC adopts a SIMATICS7-1500 controller.
Preferably, the test power supply loop comprises a main incoming line isolating switch and a main incoming line breaker which are connected with a 380V power supply in series, and the main incoming line isolating switch and the main incoming line breaker are used for providing the 380V power supply for the voltage regulating and voltage withstanding test loop; the step-down transformer is connected with the main incoming line breaker in series, and supplies power to the short-circuit test loop, the on-off test loop, the motor start-stop test loop and the motor forward and reverse rotation test loop after the 380V power supply is reduced to the 24V power supply.
Preferably, the short circuit test loop resistor, the on-off test loop pre-stage resistor and the on-off test loop post-stage resistor are all slide rheostats.
Preferably, the inductance of the short circuit test loop, the inductance of the front stage of the on-off test loop and the inductance of the rear stage of the on-off test loop are copper wire self-made inductors.
The SIMATICS7-1500 controller comprises a CPU for executing user programs, one or more power supplies, a signal module for input/output, a process module and a communication module, has excellent system performance, greatly shortens the response time of the system, optimizes the control quality and improves the system performance.
The operation process of the invention is as follows:
a test power supply: the method comprises the steps that a main incoming line isolating switch and a main incoming line breaker are manually closed, a test power supply is provided for a practical training system, a power supply incoming line is divided into two branches, one branch provides a 380V power supply for a voltage regulating and voltage withstanding test loop, the other branch is divided into four branches after passing through a step-down transformer, and the four branches respectively provide a 24V power supply for a short circuit test loop, a power-on test loop, a motor starting and stopping test loop and a motor forward and reverse rotation test loop.
Pressure regulating and withstand voltage test: the manual closed voltage regulation test circuit breaker is characterized in that a central controller PLC controls a boosting test contactor to be closed, a voltage reduction test contactor is disconnected, a connection loop enables an electric voltage regulator to complete a boosting test, the central controller PLC controls the boosting test contactor to be disconnected, the voltage reduction test contactor is closed, the connection loop enables the electric voltage regulator to complete a voltage reduction test, the manual closed voltage withstand test circuit breaker inputs output voltage of the electric voltage regulator into a boosting transformer, test voltage is applied to a voltage withstand test sample after boosting, the voltage withstand test sample is connected with a first grounding system according to test requirements, and the voltage withstand test of the voltage withstand test sample is completed.
Short-circuit test: the central controller PLC controls the short-circuit test accompanying sample contactor to be connected and disconnected with the test loop, the short-circuit test of the short-circuit test sample is completed, meanwhile, the resistance of the short-circuit test loop and the inductance of the short-circuit test loop can be adjusted to change the loop impedance, test current and power factor required by the test are obtained, and the test current is collected through the short-circuit test shunt.
On-off test: the central controller PLC controls the on-off test accompanied article contactor to be connected and disconnected with the test loop, the short circuit test of the on-off test accompanied article is completed, meanwhile, the front-stage resistance of the on-off test loop and the front-stage inductance of the on-off test loop can be adjusted to change the front-stage impedance of the loop, the rear-stage resistance of the on-off test loop and the rear-stage inductance of the on-off test loop are adjusted to change the rear-stage impedance of the loop, test current and power factor required by the test are obtained, the tail end of the impedance is grounded through the second grounding system, and the test current is collected through the on-off test shunt.
The motor start-stop test: the manual closing opens and stops experimental circuit breaker, opens and stops experimental contactor switch-on and divides disconnected return circuit by well accuse ware PLC control, accomplishes opening and stops the start-up and stop of test motor, adopts to open and stop experimental thermal relay and realizes opening the overload protection of test motor, through opening the experimental shunt collection test current that stops.
The positive and negative rotation test of the motor: a forward and reverse rotation test circuit breaker is manually closed, a forward rotation test contactor is controlled to be closed by a central controller PLC, a reverse rotation test contactor is controlled to be opened, a loop is connected to enable a forward and reverse rotation test motor to realize forward rotation, the forward rotation test contactor is controlled to be opened by the central controller PLC, the reverse rotation test contactor is controlled to be closed, the forward and reverse rotation test motor is enabled to realize reverse rotation by the loop, overload protection of the forward and reverse rotation test motor is realized by adopting a forward and reverse rotation test thermal relay, and test current is collected through a forward and reverse rotation test shunt.
A380V power supply is divided into two branches after passing through a main incoming line isolating switch and a main incoming line breaker, one branch supplies power to a voltage regulation and withstand voltage test loop, and the other branch is divided into four branches after passing through a step-down transformer and respectively supplies power to a short circuit test loop, a power-on test loop, a motor start-stop test loop and a motor forward and reverse rotation test loop. The test of different voltage levels is effectively separated, and the safety of practical training personnel and a practical training system is ensured.
The invention adopts the mode of combining the central controller PLC as a main controller with local control, has high automation degree and safe and reliable control.
The resistance of the short-circuit test loop, the pre-stage resistance of the on-off test loop and the post-stage resistance of the on-off test loop are all sliding rheostats, and the inductance of the short-circuit test loop, the pre-stage inductance of the on-off test loop and the post-stage inductance of the on-off test loop are all copper wire self-made inductances, so that the impedances of the short-circuit test loop and the on-off test loop are formed, the impedance can be linearly adjusted, and the requirements of different test currents and power factors can be met.
The short-circuit test shunt, the on-off test shunt, the start-stop test shunt and the forward and reverse rotation test shunt respectively collect the test currents of the corresponding test loops, and the device is high in precision, low in cost and easy to realize.
The invention integrates the pressure regulation and pressure resistance test, the short circuit test, the on-off test, the motor start-stop test and the motor forward and reverse rotation test, adopts the PLC as a main controller, has high automation degree and reliable control, adopts the mode of combining the remote PLC control with the on-site control, and can well ensure the safety of practical training personnel and a practical training system; the invention adopts the slide rheostat and the copper wire self-made inductor to form loop impedance, the size can be linearly adjusted, the requirements of different test currents and power factors are met, the shunt is adopted to collect the test current, the precision is high, the cost is low, and the realization is easy. The invention can simulate part of low-voltage electrical product inspection and detection tests, and can also provide a practical training platform for electrical product inspection and detection beginners to cultivate application talents.
Drawings
FIG. 1 is a schematic view of the present invention;
in the figure: a main incoming line isolating switch 1, a main incoming line breaker 2, a step-down transformer 3, a voltage regulating test breaker 4, a boosting test contactor 5, a step-down test contactor 6, an electric voltage regulator 7, a withstand voltage test breaker 8, a boosting transformer 9, a withstand voltage test sample 10, a first grounding system 11, a short circuit test accompanying sample contactor 12, a short circuit test loop resistor 13, a short circuit test loop inductor 14, a short circuit test shunt 15, a short circuit test sample 16, an on-off test loop pre-stage resistor 17, an on-off test loop pre-stage inductor 18, an on-off test accompanying sample contactor 19, an on-off test sample 20, an on-off test shunt 21, an on-off test loop post-stage resistor 22, an on-off test loop post-stage inductor 23, a second grounding system 24, an on-off test breaker 25, an on-off test contactor 26, an on-off test thermal relay 27, an on-off test shunt 28, a voltage regulator test shunt 28, The device comprises a start-stop test motor 29, a forward and reverse rotation test circuit breaker 30, a forward rotation test contactor 31, a reverse rotation test contactor 32, a forward and reverse rotation test thermal relay 33, a forward and reverse rotation test shunt 34, a forward and reverse rotation test motor 35 and a central controller PLC 36.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
The practical training system for the electrical test shown in fig. 1 comprises a voltage regulation and withstand voltage test loop, a short circuit test loop, an on-off test loop, a motor start-stop test loop and a motor forward and reverse rotation test loop which are connected with a test power supply loop, wherein each test loop is connected with a central controller PLC 36;
the voltage regulating and withstand voltage testing loop comprises a voltage regulating test circuit breaker 4, a voltage reducing test contactor 6, an electric voltage regulator 7, a withstand voltage test circuit breaker 8, a boosting transformer 9, a withstand voltage test sample 10 and a first grounding system 11 which are sequentially connected in series, wherein the voltage reducing test contactor 6 is connected with the boosting test contactor 5 in parallel;
the short-circuit test loop comprises a short-circuit test accompanying article contactor 12, a short-circuit test loop resistor 13, a short-circuit test loop inductor 14, a short-circuit test shunt 15 and a short-circuit test article 16 which are sequentially connected in series;
the on-off test loop comprises an on-off test loop pre-stage resistor 17, an on-off test loop pre-stage inductor 18, an on-off test accompanying sample contactor 19, an on-off test sample 20, an on-off test shunt 21, an on-off test loop post-stage resistor 22, an on-off test loop post-stage inductor 23 and a second grounding system 24 which are sequentially connected in series;
the motor start-stop test loop comprises a start-stop test circuit breaker 25, a start-stop test contactor 26, a start-stop test thermal relay 27, a start-stop test shunt 28 and a start-stop test motor 29 which are sequentially connected in series;
the motor forward and reverse rotation test loop comprises a forward and reverse rotation test circuit breaker 30, a forward rotation test contactor 31, a forward and reverse rotation test thermal relay 33, a forward and reverse rotation test shunt 34 and a forward and reverse rotation test motor 35 which are sequentially connected in series, wherein the forward rotation test contactor 31 is connected with the reverse rotation test contactor 32 in parallel;
the central controller PLC36 adopts SIMATICS7-1500 controller.
The test power supply loop comprises a main incoming line isolating switch 1 and a main incoming line breaker 2 which are connected with a 380V power supply in series, and the 380V power supply is provided for the voltage regulating and voltage withstanding test loop; the step-down transformer 3 is connected with the main incoming line breaker 2 in series, and supplies power to the short-circuit test loop, the on-off test loop, the motor start-stop test loop and the motor forward and reverse rotation test loop after the 380V power supply is reduced to the 24V power supply.
The short circuit test loop resistor 13, the on-off test loop pre-stage resistor 17 and the on-off test loop post-stage resistor 22 are all slide rheostats.
The short circuit test loop inductor 14, the on-off test loop front-stage inductor 18 and the on-off test loop rear-stage inductor 23 are all copper wire self-made inductors.
A test power supply: the method comprises the steps that a main incoming line isolating switch 1 and a main incoming line breaker 2 are manually closed, a test power supply is provided for a practical training system, the incoming line of the power supply is divided into two branches, one branch provides a 380V power supply for a voltage regulating and voltage withstanding test loop, the other branch is divided into four branches after passing through a step-down transformer 3, and the four branches respectively provide a 24V power supply for a short circuit test loop, a power-on test loop, a motor starting and stopping test loop and a motor forward and reverse rotation test loop.
Pressure regulating and withstand voltage test: manual closed pressure regulating test circuit breaker 4, control the closure of boost test contactor 5 by central control ware PLC36, the disconnection of step-down test contactor 6, the switch-on return circuit makes electronic voltage regulator 7 accomplish the boost test, control the disconnection of boost test contactor 5 by central control ware PLC36, step-down test contactor 6 is closed, the switch-on return circuit makes electronic voltage regulator 7 accomplish the step-down test, manual closed withstand voltage test circuit breaker 8, input electronic voltage regulator 7 output voltage into step-up transformer 9, exert test voltage to withstand voltage test sample 10 after stepping up, withstand voltage test sample 10 is connected with first ground system 11 according to experimental requirement, accomplish the withstand voltage test of withstand voltage test sample 10.
Short-circuit test: the central controller PLC36 controls the short-circuit test accompanied sample contactor 12 to switch on and switch off the test loop, completes the short-circuit test of the short-circuit test sample 16, and simultaneously can adjust the short-circuit test loop resistor 13 and the short-circuit test loop inductor 14 to change the loop impedance, obtain the test current and power factor required by the test, and collect the test current through the short-circuit test shunt 15.
On-off test: the central controller PLC36 controls the on-off test accompanied product contactor 19 to switch on and off a test loop to complete the short circuit test of the on-off test product 20, and simultaneously can adjust the front-stage resistor 17 of the on-off test loop and the front-stage inductor 18 of the on-off test loop to change the front-stage impedance of the loop, adjust the rear-stage resistor 22 of the on-off test loop and the rear-stage inductor 23 of the on-off test loop to change the rear-stage impedance of the loop to obtain the test current and power factor required by the test, the tail end of the impedance is grounded through the second grounding system 24, and the test current is collected through the on-off test shunt 21.
The motor start-stop test: the central controller PLC36 controls the on-off loop of the start-stop test contactor 26 to complete the start and stop of the start-stop test motor 29, the overload protection of the start-stop test motor 29 is realized by the start-stop test thermal relay 27, and the test current is collected by the start-stop test shunt 28.
The positive and negative rotation test of the motor: the forward and reverse rotation test circuit breaker 30 is manually closed, a forward rotation test contactor 31 is controlled to be closed by a central controller PLC36, a reverse rotation test contactor 32 is controlled to be opened, a loop is connected to enable a forward and reverse rotation test motor 35 to realize forward rotation, the forward rotation test contactor 31 is controlled to be opened by a central controller PLC36, the reverse rotation test contactor 32 is controlled to be closed, the forward and reverse rotation test motor 35 is connected to realize reverse rotation by the loop, an overload protection for the forward and reverse rotation test motor 35 is realized by a forward and reverse rotation test thermal relay 33, and test current is collected through a forward and reverse rotation test shunt 34.
The invention integrates the pressure regulation and pressure resistance test, the short circuit test, the on-off test, the motor start-stop test and the motor forward and reverse rotation test, adopts the PLC as a main controller, has high automation degree and reliable control, adopts the mode of combining the remote PLC control with the on-site control, and can well ensure the safety of practical training personnel and a practical training system; the invention adopts the slide rheostat and the copper wire self-made inductor to form loop impedance, the size can be linearly adjusted, the requirements of different test currents and power factors are met, the shunt is adopted to collect the test current, the precision is high, the cost is low, and the realization is easy. The invention can simulate part of low-voltage electrical product inspection and detection tests, and can also provide a practical training platform for electrical product inspection and detection beginners to cultivate application talents.
Claims (5)
1. The utility model provides an electric test practical training system which characterized in that: the device comprises a voltage regulation and withstand voltage test loop, a short circuit test loop, an on-off test loop, a motor start-stop test loop and a motor forward and reverse rotation test loop which are connected with a test power supply loop, wherein each test loop is connected with a central controller PLC (36);
the voltage regulating and withstand voltage testing loop comprises a voltage regulating testing circuit breaker (4), a voltage reducing testing contactor (6), an electric voltage regulator (7), a withstand voltage testing circuit breaker (8), a step-up transformer (9), a withstand voltage testing sample (10) and a first grounding system (11) which are sequentially connected in series, wherein the voltage reducing testing contactor (6) is connected with the step-up testing contactor (5) in parallel;
the short-circuit test loop comprises a short-circuit test accompanying article contactor (12), a short-circuit test loop resistor (13), a short-circuit test loop inductor (14), a short-circuit test shunt (15) and a short-circuit test article (16) which are sequentially connected in series;
the on-off test loop comprises an on-off test loop front-stage resistor (17), an on-off test loop front-stage inductor (18), an on-off test accompanying test article contactor (19), an on-off test article (20), an on-off test shunt (21), an on-off test loop rear-stage resistor (22), an on-off test loop rear-stage inductor (23) and a second grounding system (24), which are sequentially connected in series;
the motor start-stop test loop comprises a start-stop test circuit breaker (25), a start-stop test contactor (26), a start-stop test thermal relay (27), a start-stop test shunt (28) and a start-stop test motor (29) which are sequentially connected in series;
the motor forward and reverse rotation test loop comprises a forward and reverse rotation test circuit breaker (30), a forward and reverse rotation test contactor (31), a forward and reverse rotation test thermal relay (33), a forward and reverse rotation test current divider (34) and a forward and reverse rotation test motor (35) which are sequentially connected in series, wherein the forward rotation test contactor (31) is connected with the reverse rotation test contactor (32) in parallel.
2. The electrical test training system of claim 1, wherein: the central controller PLC (36) adopts a SIMATICS7-1500 controller.
3. The electrical test training system according to claim 1 or 2, characterized in that: the test power supply loop comprises a main incoming line isolating switch (1) and a main incoming line breaker (2) which are connected with a 380V power supply in series, and the 380V power supply is provided for the voltage regulating and voltage withstanding test loop; the step-down transformer (3) is connected with the main incoming line breaker (2) in series, and supplies power to the short-circuit test loop, the on-off test loop, the motor start-stop test loop and the motor forward and reverse rotation test loop after the 380V power supply is reduced to the 24V power supply.
4. The electrical test training system of claim 3, wherein: and the short circuit test loop resistor (13), the on-off test loop pre-stage resistor (17) and the on-off test loop post-stage resistor (22) are all slide rheostats.
5. The electrical test training system of claim 4, wherein: and the short circuit test loop inductor (14), the on-off test loop front-stage inductor (18) and the on-off test loop rear-stage inductor (23) are all copper wire self-made inductors.
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|---|---|---|---|
| CN202110988160.1A CN113671897A (en) | 2021-08-26 | 2021-08-26 | Electrical test training system |
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| CN202110988160.1A CN113671897A (en) | 2021-08-26 | 2021-08-26 | Electrical test training system |
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