CN216848031U - Converter charge-discharge comprehensive test equipment - Google Patents
Converter charge-discharge comprehensive test equipment Download PDFInfo
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- CN216848031U CN216848031U CN202122986506.2U CN202122986506U CN216848031U CN 216848031 U CN216848031 U CN 216848031U CN 202122986506 U CN202122986506 U CN 202122986506U CN 216848031 U CN216848031 U CN 216848031U
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Abstract
The utility model relates to a frequency converter charging and discharging comprehensive test device, and belongs to the technical field of frequency converter maintenance equipment and methods. The technical scheme is as follows: an adjustable power supply is provided, the performance of all circuit boards in the frequency converter is independently detected, and other parts are prevented from being damaged when the frequency converter is tested on equipment; the charging and discharging functions are realized, the charging and discharging of all frequency converter modules and circuit boards are realized, and the situations that the capacitor is overdischarged due to overlong storage time and the machine is exploded when the capacitor is electrified are avoided; the device has the functions of automatic voltage stabilization, control, display and operation panel interface. The utility model has the beneficial effects that: the requirements of comprehensively checking the working performance of each device in each frequency converter of each brand and model are met, the requirements of charging and discharging of each type of frequency converter capacitor are met, and a safer maintenance environment is established.
Description
Technical Field
The utility model relates to a frequency converter charging and discharging comprehensive test device, and belongs to the technical field of frequency converter maintenance equipment and methods.
Background
The frequency converter mainly changes the frequency and amplitude of the power supply of the alternating current motor, so that the period of a moving magnetic field of the alternating current motor is changed, the power of the motor is adjusted, and the rotating speed of the motor is smoothly controlled, so that the purpose of saving electricity is achieved. Due to the bad production environment and the increased service life, various fault problems can occur to the frequency converters in daily production, frequently used frequency converters comprise Siemens S120, PowerFlex700 and PowerFlex750 of Allen Bradley-Rockwell, ACS800 and ACS880 of ABB and other frequency converters of various brands and series, due to the limited data of the frequency converters in the production field, a plurality of circuit boards are arranged in the frequency converters, most field maintenance personnel only simply check and measure the IGBT rectification inverter unit to judge whether the IGBT rectification inverter unit is broken down or not, the main reasons of the problems and the positions of the damaged circuit boards cannot be accurately judged in the maintenance process, only new circuit boards can be replaced tentatively according to fault codes, all damaged devices are judged by frequent disassembling and assembling, so that the fault judgment is not accurate, the fault point investigation is not thorough, and new replaced devices can be burned out again during power-on operation, even with the danger of a fryer, which exacerbates economic losses. And the possibility of harming the personal safety of maintenance personnel is also provided.
The capacitor components of the frequency converter spare parts stored in the storeroom for a long time are subjected to long-term standing discharge, and then directly operated again, so that explosion accidents easily occur, the capacitor needs to be charged and discharged regularly to ensure various performances of the capacitor, and each frequency converter manufacturer has respective special charging and discharging equipment, but the function is single, and the price is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide comprehensive test equipment for charging and discharging of a frequency converter, which is used for providing an adjustable power supply, can be used for independently detecting the performance of all circuit boards in the frequency converter and avoiding damage to other parts when testing is carried out on the equipment; the charging and discharging functions are realized, the charging and discharging of all frequency converter modules and circuit boards can be realized, and the situations that the capacitor is overdischarged due to overlong storage time and the machine is exploded when the capacitor is electrified are avoided; the device has the functions of automatic voltage stabilization, control, display of the device and interface of the operation table, meets the requirements of comprehensively checking the working performance of each device in each frequency converter of each brand and model, meets the requirements of charging and discharging of each type of frequency converter capacitor, establishes a relatively safe maintenance environment, and effectively solves the problems in the background art.
The technical scheme of the utility model is as follows: a charging and discharging comprehensive test device for a frequency converter comprises a test bed cabinet body, a voltage regulating and boosting system, a rectifying unit, a PLC control system, a touch screen operation display area, a remote control system and a test area, wherein the test bed cabinet body is made of an iron plate, and the touch screen operation display area, the remote control system, the test area, the rectifying unit and the voltage regulating and boosting system are arranged on the test bed cabinet body; the output of the PLC control system is respectively connected with the voltage regulating and boosting system, the touch screen operation display area and the remote control system; the PLC control system controls the voltage regulating and boosting system through pulse output, and the output of the voltage regulating and boosting system is connected with the rectifying unit; the voltage regulating and boosting system comprises a booster, a voltage regulator, a stepping motor, an alternating current output current limiting and cutting contactor, a direct current output contactor, an alternating current input contactor, an input power supply aviation socket, a direct current output aviation socket, an alternating current output aviation socket and a stepping motor driving power supply, the PLC control system controls the stepping motor through pulse output, and the stepping motor drives the voltage regulator to regulate voltage through mechanical connection; the output of the voltage regulator is used as the input of the voltage booster, and the output of the voltage booster is sent to the rectifying unit; a rectifier, an aluminum shell resistor, a simulation protection load, a direct current capacitor, a direct current smoothing reactor I, a direct current smoothing reactor II, an alternating current output current limiting and cutting contactor, a direct current output contactor, an alternating current input contactor, a voltage dividing resistor, a current divider, a safety protector, a protection/discharge resistor, a stepping motor driver power supply, a PLC (programmable logic controller) and a touch screen power supply are arranged and mounted in the rear area of the test bed cabinet body; and the side surface of the test bed cabinet body is provided with a radio frequency remote control module, an input power supply aviation socket, a direct current output aviation socket, an alternating current input circuit breaker and a control power supply circuit breaker in an arrayed manner.
One end of the input power aviation socket is connected with a three-phase four-wire power supply, and the other end of the input power aviation socket is connected with a voltage regulator through an alternating current input breaker and an alternating current input contactor; the input power supply aviation socket is connected with a power supply of the stepping motor driver, a PLC and a touch screen power supply respectively through a control power supply breaker.
The rectifying unit comprises an alternating current voltmeter I, a direct current voltmeter I, an alternating current ammeter II, a direct current ammeter II, a rectifier, a direct current smoothing reactor I, a direct current smoothing reactor II, an aluminum shell resistor, an analog protection load and a direct current capacitor.
The PLC control system comprises a Siemens 1200PLC, an analog input module, an intermediate relay and an emergency stop button.
The touch screen operation display area comprises a touch screen, and the touch screen is connected with the PLC control system by adopting a Siemens new generation smart panel and programming through Bombycis and DRAWING software.
The remote control system comprises a radio frequency remote control module and a remote controller, and the remote controller is accessed to the PLC control system through the radio frequency remote control module.
The test area is an area for independently testing various unit modules of the frequency converter and is provided with a direct-current power supply interface and an alternating-current power supply interface.
The protection unit comprises a divider resistor, a shunt, a fuse, a protection/discharge resistor, a stepping motor driver, an alternating current input circuit breaker, a control power circuit breaker, a stepping motor driver power supply, a PLC (programmable logic controller) and a touch screen power supply.
The using method of the utility model comprises the following steps:
the method comprises the steps of (I) automatically stabilizing voltage, selecting voltage levels through a touch screen operation display area, dividing the voltage levels into three voltage levels of 380V, 500V and 690V,
firstly, the three-phase ac380V + is automatically regulated in voltage stabilization and synchronization corresponding to dc 537V;
the three-phase ac500V + corresponds to dc707V automatic voltage stabilization and synchronous adjustment;
thirdly, automatic voltage stabilization and synchronization adjustment of three-phase ac690V + corresponding dc 976V;
the control function is that the operation mode is selected by operating the display area through the touch screen, and the operation mode is divided into a voltage regulation mode, a charge-discharge mode and a jog mode; a set of remote control systems is provided for the operation in the emergency stop and inching modes;
firstly, in a inching mode, all three voltage levels are inching adjusted, and the upper limit of boosting is enabled not to exceed 125% of the voltage level through software locking; inching voltage reduction is unlimited, and the voltage reduction speed adapts to the discharge rate of the capacitor; all operations are controlled by a button and a remote controller; after different voltage grades are selected, the corresponding indicator light is turned on, otherwise, the corresponding indicator light is turned off; when a plurality of buttons are pressed simultaneously, the stepping voltage reduction is prioritized, and the three voltage levels select the lowest voltage level;
in the voltage regulating mode, corresponding indicator lamps are set to flicker when the voltage regulating process rises and falls respectively, and the flicker indicator lamps are turned off when the voltage regulating process is not regulated; if the alternating current voltage or the direct current voltage exceeds the corresponding voltage grade fault set value in the voltage regulating mode process, the alternating current input contactor is disconnected, and direct current is not output outwards; the release button and the remote control selection voltage regulator automatically return to zero, all contactors can be tripped off by pressing a D key of the remote controller in the voltage regulation mode process, and the work is finished at the same time, and the touch screen displays 'remote controller tripping'; when the remote controller is recovered, the 'C' key of the remote controller must be pressed for resetting so as to continue normal use;
The charge-discharge mode has the function of automatically stopping charge and discharge for 90 minutes about dc500mA, and the voltage boosting process from dc (0-20V) to dc rated voltage and the voltage reducing process from dc rated voltage to dc (0-20V) are automatically realized every 10 minutes to realize the charge-discharge operation of the capacitor; the AC contactor is firstly actuated, whether the AC voltage is below an initial set value or not is judged, if the AC voltage is lower than the set value, the AC input contactor is actuated, otherwise, the AC voltage is reduced below the set value and then the AC input contactor is actuated; starting boosting after the AC input contactor is closed until the selected voltage level is reached; maintaining for 60S when the selected voltage level is reached, then regulating the voltage downwards, regulating the voltage downwards to an initial set value, and then boosting the voltage again until the selected voltage level is reached; the above setting of the number of cycles is repeatedly performed; after the charging and discharging reaches the set cycle number, the alternating current input contactor trips after the last maintenance for 60S, and the touch screen displays 'charging and discharging is finished'; if the alternating current voltage or the direct current voltage exceeds the corresponding voltage grade fault set value in the charging and discharging process, the alternating current input contactor is disconnected, and direct current is not output outwards; in the charging and discharging process, all contactors can be tripped off by pressing a 'D' key of a remote controller, and the work is finished at the same time, and the 'remote controller trip' is displayed by the touch screen at the moment; when the remote controller is recovered, the 'C' key of the remote controller must be pressed for resetting so as to continue normal use;
Fourthly, the PLC control system completes the integral control;
(III) display function
Firstly, displaying voltage by using an alternating current voltmeter and a direct current voltmeter, wherein the measuring ranges are alternating current 1000V and direct current 1500V;
secondly, displaying load current and dc current-limiting current by using an alternating current meter and a direct current meter, and using the same meter head, wherein the range of 0-20A is three and a half;
③ the dc current-limiting current is not more than 20A;
(IV) division of operating floor interface
The operating platform is divided into two areas, wherein one area is a power supply operating area and comprises the selection of a load and a current-limiting resistor, and the other area is a test area;
secondly, the power supply operation area is controlled by a touch screen, and 380V grade is selected by default when the mobile phone is started;
thirdly, placing a withstand voltage tester in the test area, and embedding the withstand voltage tester in a proper position of an operation table;
fourthly, simultaneously placing a universal meter, an oscilloscope, a complementary square wave output signal source and an IGBT trigger tool in the test area;
and fifthly, placing positive and negative dc +/-24V, +12V and +5V power supplies in the test area, and exposing the front of the wiring terminal block.
The utility model has the beneficial effects that: the adjustable power supply is provided, so that the performance of all circuit boards in the frequency converter can be independently detected, and other parts are prevented from being damaged when the frequency converter is tested on equipment; the charging and discharging functions are realized, the charging and discharging of all frequency converter modules and circuit boards can be realized, and the situations that the capacitor is overdischarged due to overlong storage time and the machine is exploded when the capacitor is electrified are avoided; the device has the functions of automatic voltage stabilization, control, display and operation panel interface, meets the requirements of comprehensively checking the working performance of each device in each frequency converter of each brand and model, meets the requirements of charging and discharging of each type of frequency converter capacitor, and establishes a relatively safe maintenance environment.
Drawings
FIG. 1 is a schematic front view of the present invention;
FIG. 2 is a schematic view of the backside structure of the present invention;
FIG. 3 is a circuit diagram of the voltage regulating and boosting system of the present invention;
FIG. 4 is a circuit diagram of a portion of the DC tool of the present invention;
FIG. 5 is a PLC part-digital output diagram of the PLC control system of the present invention;
FIG. 6 is a PLC part-digital input diagram of the PLC control system of the present invention;
FIG. 7 is a PLC part-analog input diagram of the PLC control system of the present invention;
FIG. 8 is a PLC control portion-contactor circuit diagram of the present invention;
in the figure: an alternating current voltmeter I1, a direct current voltmeter I2, an alternating current ammeter II 3, a direct current ammeter II 4, a radio frequency remote control module 5, an emergency stop button 6, an input power supply aviation socket 7, a direct current output aviation socket 8, an alternating current output aviation socket 9, a Siemens 1200PLC10, a touch screen 11, an intermediate relay 12, a rectifier 13, an aluminum shell resistor 14, a simulation protection load 15, a direct current capacitor 16, a direct current smoothing reactor I17, a direct current smoothing reactor II 18, an alternating current output current limiting and cutting contactor 19, a direct current output current limiting and cutting contactor 20, a direct current output contactor 21, an alternating current input contactor 22, a booster 23, a voltage regulator 24, a stepping motor 25, a test area 26, a voltage dividing resistor 27, a current divider 28, a fuse 29, a protection/discharge resistor 30, a stepping motor driver 31, an alternating current input breaker 32, a control power supply breaker 33, a booster 23, a booster 24, a step motor controller, a step motor, a step, A stepping motor driver power supply 34, a PLC and touch screen power supply 35, a direct current tool 36 and a remote controller 37.
Detailed Description
The technical solution of the present invention is further described in detail with reference to the accompanying drawings and examples.
A frequency converter charging and discharging comprehensive test device comprises a test bed cabinet body, a voltage regulating and boosting system, a rectifying unit, a PLC control system, a touch screen operation display area, a remote control system and a test area 26, wherein the test bed cabinet body is made of iron plates, and the touch screen operation display area, the remote control system, the test area, the rectifying unit and the voltage regulating and boosting system are arranged on the test bed cabinet body; the output of the PLC control system is respectively connected with the voltage regulating and boosting system, the touch screen operation display area and the remote control system; the PLC control system controls the voltage regulating and boosting system through pulse output, and the output of the voltage regulating and boosting system is connected with the rectifying unit; the voltage regulating and boosting system comprises a booster 23, a voltage regulator 24, a stepping motor 25, an alternating current output current limiting cutting contactor 19, a direct current output current limiting cutting contactor 20, a direct current output contactor 21, an alternating current input contactor 22, an input power supply aviation socket 7, a direct current output aviation socket 8, an alternating current output aviation socket 9 and a stepping motor driving power supply, the PLC control system controls the stepping motor 25 through pulse output, and the stepping motor 25 drives the voltage regulator 24 to regulate voltage through mechanical connection; the output of the booster 24 is used as the input of the booster 23, and the output of the booster 23 is sent to the rectifying unit; a rectifier 13, an aluminum shell resistor 14, a simulation protection load 15, a direct current capacitor 16, a direct current smoothing reactor I17, a direct current smoothing reactor II 18, an alternating current output current limiting and cutting contactor 19, a direct current output current limiting and cutting contactor 20, a direct current output contactor 21, an alternating current input contactor 22, a voltage dividing resistor 27, a current divider 28, a safety fuse 29, a protection/discharge resistor 30, a stepping motor driver 31, a stepping motor driver power supply 34 and a PLC and touch screen power supply 35 are arranged and mounted in the rear region of the test bed cabinet body; and the side surface of the test bed cabinet body is provided with a radio frequency remote control module 5, an input power supply aviation socket 7, a direct current output aviation socket 8, an alternating current output aviation socket 9, an alternating current input circuit breaker 32 and a control power supply circuit breaker 33 in a arraying way.
One end of the input power aviation socket 7 is connected with a three-phase four-wire power supply, and the other end of the input power aviation socket is connected with a voltage regulator 24 through an alternating current input breaker 32 and an alternating current input contactor 22; the input power supply aviation socket 7 is connected with a stepping motor driver power supply 34, a PLC and a touch screen power supply 35 through a control power supply breaker 33.
The rectifying unit comprises a first alternating current voltmeter 1, a first direct current voltmeter 2, a second alternating current ammeter 3, a second direct current ammeter 4, a rectifier 13, a first direct current smoothing reactor 17, a second direct current smoothing reactor 18, an aluminum shell resistor 14, an analog protection load 15 and a direct current capacitor 16.
The PLC control system comprises a Siemens 1200PLC10, an analog input module, an intermediate relay 12 and an emergency stop button 6.
The touch screen operation display area comprises a touch screen 11, and the touch screen 11 is connected with the PLC control system through a new Siemens generation smart panel and a Bombycis-chart software programming mode.
The remote control system comprises a radio frequency remote control module 5 and a remote controller, and the remote controller is connected to the PLC control system through the radio frequency remote control module 5.
The test area is an area for independently testing various unit modules of the frequency converter and is provided with a direct-current power supply interface and an alternating-current power supply interface.
The protection unit comprises a voltage dividing resistor 27, a current divider 28, a fuse 29, a protection/discharge resistor 30, a stepping motor driver 31, an alternating current input circuit breaker 32, a control power circuit breaker 33, a stepping motor driver power supply 34 and a PLC and touch screen power supply 35.
The using method of the utility model comprises the following steps:
the method comprises the steps of (I) automatically stabilizing voltage, selecting voltage levels through a touch screen operation display area, dividing the voltage levels into three voltage levels of 380V, 500V and 690V,
firstly, the three-phase ac380V + is automatically regulated in voltage stabilization and synchronization corresponding to dc 537V;
the three-phase ac500V + corresponds to dc707V automatic voltage stabilization and synchronous adjustment;
thirdly, automatic voltage stabilization and synchronization adjustment of three-phase ac690V + corresponding dc 976V;
the control function is that the operation mode is selected by operating the display area through the touch screen, and the operation mode is divided into a voltage regulation mode, a charge-discharge mode and a jog mode; a set of remote control systems is provided for the operation in the emergency stop and inching modes;
firstly, in a inching mode, all three voltage levels are inching adjusted, and the upper limit of boosting is enabled not to exceed 125% of the voltage level through software locking; inching voltage reduction is unlimited, and the voltage reduction speed adapts to the discharge rate of the capacitor; all operations are controlled by a button and a remote controller; after different voltage grades are selected, the corresponding indicator light is turned on, otherwise, the corresponding indicator light is turned off; when a plurality of buttons are pressed simultaneously, the stepping voltage reduction is prioritized, and the three voltage levels select the lowest voltage level;
In the voltage regulation mode, corresponding indicator lamps are set to flicker when the voltage regulation process rises and falls respectively, and the flicker indicator lamps are turned off when the voltage regulation process is not regulated; if the alternating current voltage or the direct current voltage exceeds a corresponding voltage grade fault set value in the voltage regulating mode process, the alternating current input contactor is disconnected, and direct current is not output outwards; the release button and the remote control selection voltage regulator automatically return to zero, all contactors can be tripped off by pressing a D key of the remote controller in the voltage regulation mode process, and the work is finished at the same time, and the touch screen displays 'remote controller tripping'; when the remote controller is recovered, the 'C' key of the remote controller must be pressed for resetting so as to continue normal use;
the charge-discharge mode has the function of automatically stopping charge and discharge for 90 minutes about dc500mA, and the voltage boosting process from dc (0-20V) to dc rated voltage and the voltage reducing process from dc rated voltage to dc (0-20V) are automatically realized every 10 minutes to realize the charge-discharge operation of the capacitor; the AC contactor is firstly actuated, whether the AC voltage is below an initial set value or not is judged, if the AC voltage is lower than the set value, the AC input contactor is actuated, otherwise, the AC voltage is reduced below the set value and then the AC input contactor is actuated; starting boosting after the AC input contactor is closed until the selected voltage level is reached; maintaining for 60S when the selected voltage level is reached, then regulating the voltage downwards, regulating the voltage downwards to an initial set value, and then boosting the voltage again until the selected voltage level is reached; the above setting of the number of cycles is repeatedly performed; after the charging and discharging reaches the set cycle number, the alternating current input contactor trips after the last maintenance for 60S, and the touch screen displays 'charging and discharging is finished'; if the alternating current voltage or the direct current voltage exceeds the corresponding voltage grade fault set value in the charging and discharging process, the alternating current input contactor is disconnected, and direct current is not output outwards; in the charging and discharging process, all contactors can be tripped off by pressing a 'D' key of a remote controller, and the work is finished at the same time, and the 'remote controller trip' is displayed by the touch screen at the moment; when the remote controller is recovered, the 'C' key of the remote controller must be pressed for resetting so as to continue normal use;
Fourthly, the PLC control system completes the integral control;
(III) display function
Firstly, displaying voltage by using an alternating current voltmeter and a direct current voltmeter, wherein the measuring ranges are alternating current 1000V and direct current 1500V;
secondly, displaying load current and dc current-limiting current by using an alternating current meter and a direct current meter, and using the same meter head, wherein the range of 0-20A is three and a half;
③ the dc current-limiting current is not more than 20A;
(IV) dividing the operating table interface
The operating platform is divided into two areas, wherein one area is a power supply operating area and comprises the selection of a load and a current-limiting resistor, and the other area is a test area;
secondly, the power supply operation area is controlled by a touch screen, and 380V grade is selected by default when the mobile phone is started;
thirdly, placing a withstand voltage tester in the test area, and embedding the withstand voltage tester in a proper position of an operation table;
fourthly, simultaneously placing a universal meter, an oscilloscope, a complementary square wave output signal source and an IGBT trigger tool in the test area;
and fifthly, placing positive and negative dc +/-24V, +12V and +5V power supplies in the test area, and exposing the front of the wiring terminal block.
In practical application, the operation steps are as follows:
voltage regulating mode (for frequency converter maintenance, providing AC/DC power supply with different voltage grade and frequency)
1. Selecting a voltage regulating mode through a working mode of a touch screen;
2. Selecting a required voltage level of 380V or 500V or 690V through a touch screen voltage selection box;
3. pressing a 'system start' button to start working;
4. attracting an alternating current incoming line contactor KM 2;
5. after the KM2 is attracted for 2S, the voltage is regulated according to the selected voltage grade;
6. the direct current outlet contactor KM1 is attracted for 5S after being attracted by KM 2;
7. after the work is finished, a 'system stop' button is pressed to finish the work, the KM1 is disconnected from the KM2, and then other operations (such as voltage regulation of other voltage levels or entering other working modes) are carried out;
8. in the voltage regulating process, if the alternating current voltage or the direct current voltage exceeds a corresponding voltage class fault set value (380 classes are set to 420VAC/600VDC, 500 classes are set to 550VAC/780VDC, 690 classes are set to 760VAC/1080 VDC), the KM1 is disconnected, and direct current is not output outwards any more;
9. in the voltage regulating process, all contactors can be tripped off by pressing a D key of the remote controller, and the work is finished at the same time, and the touch screen displays the trip of the remote controller; when the remote controller is recovered, the 'C' key of the remote controller must be pressed first to reset, and then normal use can be continued.
(II) charging/discharging mode (for automatically executing charging/discharging operation of frequency converter capacitor)
1. Selecting a charging and discharging mode through a working mode of a touch screen;
2. selecting a required voltage level of 380V or 500V or 690V through a touch screen voltage selection box;
3. pressing a 'system start' button to start working;
4. attracting an alternating current incoming line contactor KM 2;
5. judging whether the alternating voltage is below an initial set value (100V), attracting KM1 if the alternating voltage is lower than the set value, or attracting KM1 if the alternating voltage is lower than the set value;
6. after the KM1 is attracted, boosting is started until the selected voltage level is reached;
7. maintaining for 60S when the selected voltage level is reached, and then regulating the voltage downwards;
8. the voltage is adjusted downwards to an initial set value and then is boosted again until a selected voltage level is reached;
9. repeatedly executing the set cycle numbers (6 cycles) in the 7 th and 8 th steps;
10. after the charging and discharging reaches the set cycle number, after the last maintenance 60S is finished, KM1 trips, and the touch screen displays that the charging and discharging is finished;
11. after the work is finished, a 'system stop' button is pressed to finish the work, the KM1 is disconnected from the KM2, and then other operations (such as charging and discharging at other voltage levels or entering other work modes) are carried out;
12. When the alternating-current voltage or the direct-current voltage exceeds a corresponding voltage grade fault set value (380 grades are set to be 420VAC/600VDC, 500 grades are set to be 550VAC/780VDC, 690 grades are set to be 760VAC/1080 VDC) in the charging and discharging process, the KM1 is switched off, and direct current is not output outwards any more;
13. in the charging and discharging process, all contactors can be tripped off by pressing a D key of a remote controller, and the work is finished at the same time, and the touch screen displays the trip of the remote controller; when the remote controller is recovered, the 'C' key of the remote controller must be pressed first to reset, and then normal use can be continued.
(III) inching mode (self-defined occasion, voltage grade and type are selected according to user requirements)
1. Selecting a 'inching mode' through a 'working mode' of a touch screen;
2. attracting an alternating current incoming line contactor KM 2;
3. after 5S of KM2 attraction, KM1 attraction is carried out;
4. pressing the key "A" of the remote controller to raise the voltage;
5. pressing the key B of the remote controller to reduce the voltage;
6. pressing a 'D' key of a remote controller to jump off all contactors and finish work at the same time, and displaying 'remote controller tripping' by a touch screen at the moment; when the recovery is carried out, the 'C' key of the remote controller must be pressed for reset before the normal use can be continued.
And (IV) cutting off the alternating current limiting resistor and the direct current limiting resistor:
And realizing operation through the touch screen according to the requirement.
Claims (3)
1. The utility model provides a converter charge-discharge combined test equipment which characterized in that: the test bed comprises a test bed cabinet body, a voltage regulating and boosting system, a rectifying unit, a PLC control system, a touch screen operation display area, a remote control system and a test area (26), wherein the test bed cabinet body is made of iron plates, and the touch screen operation display area, the remote control system, the test area, the rectifying unit and the voltage regulating and boosting system are arranged on the test bed cabinet body; the output of the PLC control system is respectively connected with the voltage regulating and boosting system, the touch screen operation display area and the remote control system; the PLC control system controls the voltage regulating and boosting system through pulse output, and the output of the voltage regulating and boosting system is connected with the rectifying unit; the voltage-regulating and boosting system comprises a booster (23), a voltage regulator (24), a stepping motor (25), an alternating current output current-limiting cutting contactor (19), a direct current output current-limiting cutting contactor (20), a direct current output contactor (21), an alternating current input contactor (22), an input power aviation socket (7), a direct current output aviation socket (8), an alternating current output aviation socket (9) and a stepping motor driving power supply, the PLC control system controls the stepping motor (25) through pulse output, and the stepping motor (25) drives the voltage regulator (24) to regulate voltage through mechanical connection; the output of the voltage regulator (24) is used as the input of the booster (23), and the output of the booster (23) is sent to the rectifying unit; a rectifier (13), an aluminum shell resistor (14), a simulation protection load (15), a direct current capacitor (16), a direct current smoothing reactor I (17), a direct current smoothing reactor II (18), an alternating current output current limiting cutting contactor (19), a direct current output current limiting cutting contactor (20), a direct current output contactor (21), an alternating current input contactor (22), a voltage dividing resistor (27), a current divider (28), a safety guard (29), a protection/discharge resistor (30), a stepping motor driver (31), a stepping motor driver power supply (34) and a PLC and touch screen power supply (35) are arranged and mounted in the rear area of the test bed cabinet body; the side of the test bed cabinet body is provided with a radio frequency remote control module (5), an input power supply aviation socket (7), a direct current output aviation socket (8), an alternating current output aviation socket (9), an alternating current input circuit breaker (32) and a control power supply circuit breaker (33).
2. The integrated test equipment for charging and discharging of the frequency converter according to claim 1, characterized in that: one end of the input power aviation socket (7) is connected with a three-phase four-wire power supply, and the other end of the input power aviation socket is connected with a voltage regulator (24) through an alternating current input circuit breaker (32) and an alternating current input contactor (22); the input power supply aviation socket (7) is connected with a stepping motor driver power supply (34), a PLC and a touch screen power supply (35) through a control power supply breaker (33) respectively.
3. The integrated test equipment for charging and discharging of the frequency converter according to claim 1, characterized in that: the rectifying unit comprises an alternating current voltmeter I (1), a direct current voltmeter I (2), an alternating current ammeter II (3), a direct current ammeter II (4), a rectifier (13), a direct current smoothing reactor I (17), a direct current smoothing reactor II (18), an aluminum shell resistor (14), an analog protection load (15) and a direct current capacitor (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122986506.2U CN216848031U (en) | 2021-12-01 | 2021-12-01 | Converter charge-discharge comprehensive test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122986506.2U CN216848031U (en) | 2021-12-01 | 2021-12-01 | Converter charge-discharge comprehensive test equipment |
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| Publication Number | Publication Date |
|---|---|
| CN216848031U true CN216848031U (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122986506.2U Expired - Fee Related CN216848031U (en) | 2021-12-01 | 2021-12-01 | Converter charge-discharge comprehensive test equipment |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295907A (en) * | 2021-12-01 | 2022-04-08 | 曹妃甸港矿石码头股份有限公司 | Frequency converter charging and discharging comprehensive test equipment and method |
-
2021
- 2021-12-01 CN CN202122986506.2U patent/CN216848031U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295907A (en) * | 2021-12-01 | 2022-04-08 | 曹妃甸港矿石码头股份有限公司 | Frequency converter charging and discharging comprehensive test equipment and method |
| CN114295907B (en) * | 2021-12-01 | 2023-12-12 | 曹妃甸港矿石码头股份有限公司 | Frequency converter charge and discharge comprehensive test equipment and method |
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