CN117929979A - Three-station running-in test system - Google Patents
Three-station running-in test system Download PDFInfo
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- CN117929979A CN117929979A CN202311691881.1A CN202311691881A CN117929979A CN 117929979 A CN117929979 A CN 117929979A CN 202311691881 A CN202311691881 A CN 202311691881A CN 117929979 A CN117929979 A CN 117929979A
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- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 238000007689 inspection Methods 0.000 claims abstract description 9
- 238000010200 validation analysis Methods 0.000 claims description 3
- 230000009471 action Effects 0.000 abstract description 9
- 238000000034 method Methods 0.000 description 17
- 230000008569 process Effects 0.000 description 17
- 238000002955 isolation Methods 0.000 description 16
- 238000012790 confirmation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000002788 crimping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
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- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
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- 238000012544 monitoring process Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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Abstract
The invention discloses a three-station running-in test system, which is characterized by comprising the following components: PLC, voltage regulator, multiple groups of adjustable power supplies, motor controller and contactor; the PLC is connected with a plurality of groups of adjustable power supplies in a control way and is connected to a three-station mechanism through a voltage regulator; the output end of the voltage regulator is also connected to an analog input port of the PLC; the PLC is respectively connected with the three-station direct current motor through the motor controller and the contactor in a control mode. The three-station running-in test system provided by the invention can be used for testing the reliability and wiring inspection of three stations, can freely set the running cycle times, has the functions of automatically stopping faults, displaying the contact state of each station in real time, automatically setting the motor voltage and the like, and can be used for controlling the running cycle time, the motor action interval and the motor cycle interval of each station.
Description
Technical Field
The invention relates to an electrical control technology, in particular to a switch cabinet testing technology.
Background
The switch cabinet is an electrical device, the external line of the switch cabinet firstly enters the main control switch in the cabinet, then enters the sub-control switch, and each shunt is arranged according to the requirement. Such as meters, automatic control, motor magnetic switches, various ac contactors, etc., and high-voltage and low-voltage switchgear, high-voltage buses, such as power plants, etc., and low-cycle relief for protecting major equipment.
The main function of the switch cabinet is to open and close, control and protect electric equipment in the process of generating, transmitting, distributing and converting electric energy of the electric power system. The components in the switch cabinet mainly comprise a breaker, a disconnecting switch, a load switch, an operating mechanism, a transformer, various protection devices and the like.
The three-position switch in the switch cabinet is used as an important component of the switch cabinet, and the operation reliability of the position switch at the corresponding position influences the stability and reliability of the whole switch cabinet. Therefore, for the switchgear, it is necessary to perform test checks on the reliability of the work stations and wiring of the configuration thereof.
The existing scheme for testing the station reliability and wiring inspection in the switch cabinet cannot automatically complete multi-station running-in test work, has low test efficiency and cannot meet actual requirements.
Disclosure of Invention
Aiming at the problems of the existing switch cabinet test scheme, the invention aims to provide a three-station running-in test system which can automatically test the reliability of three stations and perform wiring inspection, thereby effectively overcoming the problems of the prior art.
In order to achieve the above object, the three-station running-in test system provided by the present invention includes: PLC, voltage regulator, multiple groups of adjustable power supplies, motor controller and contactor; the PLC is connected with a plurality of groups of adjustable power supplies in a control way and is connected to a three-station mechanism through a voltage regulator; the output end of the voltage regulator is also connected to an analog input port of the PLC; the PLC is respectively connected with the three-station direct current motor through the motor controller and the contactor in a control mode.
In some embodiments of the invention, the three-station break-in test system connects the switching value signal to the tested equipment through the aviation plug interfaces, and respectively confirms aviation plug for the 1-way position contact points and 2 groups of break-in aviation plug.
In some embodiments of the present invention, when the three-station running-in test system performs position contact validation, each set of auxiliary contacts of the position contact validation aviation plug is input through a DIO module of the PLC after being connected to a separate adjustable power supply.
In some embodiments of the invention, the three-position break-in test system monitors motor voltage, current in real time during the break-in test and records the maximum current during the break-in.
In some embodiments of the invention, the three-station break-in test system is configured to shut down an alarm when motor current exceeds a set threshold during a break-in test.
In some embodiments of the invention, an HMI is configured in the three-station break-in test system.
In some embodiments of the present invention, the three-station break-in test system is configured with three sets of adjustable power supplies, and the three sets of wiring inspection and two-way break-in can be independently operated.
The three-station running-in test system provided by the invention can be used for testing the reliability and wiring inspection of three stations, can freely set the running cycle times, has the functions of automatically stopping faults, displaying the contact state of each station in real time, automatically setting the motor voltage and the like, and can be used for controlling the running cycle time, the motor action interval and the motor cycle interval of each station.
Drawings
The invention is further described below with reference to the drawings and the detailed description.
FIG. 1 is a front side exemplary view of a three-station break-in test system in accordance with an embodiment of the present invention;
FIG. 2 is a side exemplary view of a three-station break-in test system in accordance with an embodiment of the present invention;
FIG. 3 is an exemplary diagram of an internal electrical backplane of a three-station break-in test system in accordance with an embodiment of the present invention;
FIG. 4 is a signal block diagram of a three-station break-in test system for three-station position status monitoring in an example of the present invention;
FIG. 5 is a diagram illustrating an exemplary flow of automatic operation based on a first cycle mode in an example of the present invention;
FIG. 6 is a diagram illustrating an example flow of automatic operation based on a second cycle mode in an example of the present invention.
Detailed Description
The invention is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the invention easy to understand.
Referring to fig. 1 to 4, the three-station running-in test system 100 according to the present invention mainly includes a cabinet 110, an electric base 120 disposed in the cabinet 110, a plurality of voltage regulators 130, a power supply assembly 140, a plurality of connectors 150 disposed on the cabinet 110, and a control assembly 160 disposed on the cabinet 110.
The electrical cabinet 110 here constitutes the main structure of the whole test system, and is composed of a cabinet body and a cabinet door provided on the cabinet body. The electrical cabinet 110 is designed to meet the corresponding electrical industry standards.
Multiple sets of voltage regulators 130 disposed in the electrical cabinet 110 cooperate with the power supply assembly 140 to form multiple sets of independent and adjustable power supplies for adapting to different test conditions.
Specifically, the voltage regulators 130 are respectively and independently disposed at the bottom of the electrical cabinet 110, so as to perform the step-up and step-down operations according to the actual requirements.
For example, three sets of voltage regulators 130 are adopted in the scheme of the invention, and the three sets of voltage regulators 130 are respectively arranged at the bottom of the electrical cabinet 110 through corresponding arranging brackets 131, so that the voltage regulators are prevented from directly contacting the bottom of the electrical cabinet 110, and the safety and the reliability are ensured.
As a preferred arrangement, the mounting bracket 131 is generally pi-shaped, and the three voltage regulators 130 are sequentially and equidistantly arranged on the mounting bracket 131, so that not only the stable and reliable structure, but also the safety of the voltage regulators 130 can be ensured.
In cooperation with this, the power supply assembly 140 is mainly composed of a plurality of groups of switching power supplies 141 and a rectifier bridge 142.
The multiple groups of switching power supplies 141 are respectively and electrically connected with the multiple groups of voltage regulators 130, and meanwhile, the rectifying bridge 142 is simultaneously connected with the multiple groups of voltage regulators 130, so that currents generated by the multiple groups of switching power supplies 141 are respectively boosted and reduced through the corresponding voltage regulators 130, and then are rectified and filtered through the rectifying bridge 142 to form current and voltage.
For example, three sets of switching power supplies 141 are used in the power supply assembly 140, and the three sets of switching power supplies 141 are electrically connected to three sets of independent voltage regulators 130, and the three sets of independent voltage regulators 130 are connected to a rectifier bridge 142, thereby forming three sets of independent adjustable power supplies.
The power supply assembly 140 is preferably integrated into the electrical backplane 120, which facilitates control of the arrangement and ensures electrical reliability.
The electrical backplane 120 disposed in the electrical cabinet 110 serves as a control center for the overall three-station break-in test system for controlling the connection of the multiple sets of voltage regulators 130, power components 140, connectors 150, and control components 160, and for coordinating the interaction of the various components.
The electrical backplane 120 has integrated thereon a PLC 121, a motor controller 122, a contactor 123, and a corresponding switching power supply 124.
The PLC 121 is configured to provide corresponding control instructions, and the specific configuration and model of the PLC 121 are not limited herein, and may be determined according to actual requirements.
The control ends of the PLCs 121 are respectively connected to a motor controller 122, and are used by the motor controller 122 to control and connect with an actuating mechanism (such as a three-station dc motor) in the three-station mechanism.
The contactor 123 is configured to cooperate with the fuse 125 for controlling an actuation mechanism (e.g., a three-position dc motor) coupled to the three-position mechanism.
The switching power supply 124 is used to provide a stable operating current for the PLC 121, the motor controller 122, and the contactor 123 on the electrical backplane 120.
The specific configuration and model of the motor controller 122, the contactor 123 and the fuse 125 are not limited herein, and may be determined according to actual requirements.
As a further preferable arrangement, the electrical base plate 120 is integrally provided with an isolation inverter 126, and the isolation inverter 126 is cooperatively arranged with the PLC 121 to improve the stability of the operation of the PLC 121.
The thus provided electric backplane 120 controls the voltage regulator 130 and the power supply assembly 140 through the PLC 121 thereon to constitute a desired working environment.
A plurality of connectors 150 are mounted on the electrical cabinet 110 as connection ports for connection with corresponding three-position mechanisms.
Further, the connector 150 may be formed with a corresponding air interface.
The control assembly 160 arranged on the electrical cabinet 110 forms a man-machine interaction part of the whole system, and instruction input and information display are completed.
The control unit 160 is configured to cooperate with the electric backplane 120, and is mainly composed of a touch screen (HMI) 161, a power switch 162, an emergency button 163, and the like.
As a further preferred arrangement, the present example configures a set of warning lights 170 on the electrical cabinet 110, where the warning lights 170 are disposed on top of the electrical cabinet 110 and connected to the PLC 121, and can form a corresponding light warning according to the control of the PLC 121.
The three-position running-in test system 100 thus formed can be separated into a "position contact confirmation" operating state and a "three-position mechanism running-in" operating state when in operation.
When the three-station running-in test system 100 performs a "position contact confirmation" working state, firstly, after an avionics plug-in accessory (position contact confirmation channel) is connected with a three-station mechanism to be tested, a "contact confirmation" command is formed through HMI operation, and each group of auxiliary contacts in the avionics plug-in accessory is input through a DIO module which is connected with an independent adjustable power supply and then is introduced into a PLC, and the position state is confirmed according to a preset contact state.
After the position confirmation is completed, the system is exited, the navigation plug-in accessory on the three-station mechanism is connected into the navigation plug-in accessory (a three-station mechanism running-in channel), a running-in control command is formed on the HMI, and the PLC can run in the three-station mechanism for corresponding times through the preset running-in command.
The implementation of the three-station break-in test system 100 formed by the present solution and the corresponding technical details are described in detail below.
When the three-station running-in test system operates, a plurality of groups of adjustable power supplies are connected by the PLC control, and are connected to a three-station direct current motor through a voltage regulator, and the output end of the voltage regulator is also connected to an analog input port of the PLC; furthermore, the PLC is respectively connected with a three-station direct current motor (namely, a three-station mechanism) through a motor controller and a contactor.
In some example modes of the invention, the three-station running-in test system is provided with three sets of adjustable power supplies, and the wiring inspection and the two running-in can be independently operated. Specifically, after the production of the switch cabinet is finished, the operation of confirming the wiring position of the three-station mechanism in the switch cabinet is firstly performed, then the aviation plug interface for grinding is switched, and the operation mode is adjusted; in the running-in mode, the three-station mechanism can be subjected to running-in operation for a set number of times.
In some example modes of the invention, the three-station running-in test system is realized by adopting a PLC and touch screen (HMI) mode to realize the control of the whole system.
In some example modes of the invention, the three-station running-in test system performs wiring inspection through a corresponding aviation plug interface, and particularly performs three-station running-in inspection through two cables and a U-shaped cold-pressed terminal which is in crimping connection with an end tail.
When the three-station running-in test system operates, corresponding switching value signals are connected to tested equipment through the aviation interface, each channel uses independent power supply, when single power supply is used, a plurality of groups of signals of the same station are prevented from being monitored in a crossing mode, the action of a motor is controlled through a contactor, then position keys of the three stations are set through an HMI, and 36 channel state information is displayed.
Further, the PLC controls the voltage regulator to step up and step down, and meanwhile, the direct-current voltage of the voltage regulator after rectification and filtration is fed back to an analog input port of the PLC, so that the direct-current power supply required by the three-station motor is automatically set. When the system is running, the PLC monitors the running current of the three-station motor in real time, and the motor is automatically stopped when the running current exceeds a set threshold value of the system.
Further, the three-station running-in test system can automatically return to zero after power-on and test completion.
Furthermore, the three-station running-in test system can automatically set, the capacity of the voltage regulator is 2KVA, the two sets of power supplies are independently controlled, the motor voltage is set on the HMI interface during test, and the system automatically adjusts the output voltage to the target voltage.
Further, the three-station running-in test system monitors the voltage and the current of the motor in real time in the running-in test process, records the maximum current in the running-in process, can be used as a test basis for tracing in the production process, and prevents the phenomenon that the motor is blocked and not adjusted in the running process.
Further, in the running-in process of the three-station running-in test system, if the current of the generated motor exceeds a set threshold value, the system is stopped and alarmed, through the detection module, the maximum current generated in the running process is monitored, if the maximum current value exceeds the set threshold value, the system is stopped and alarmed through a command sent by the PLC, and then on-site operators can perform defect elimination and obstacle removal.
Further, the three-station running-in test system is limited in the running-in test process based on the following actions:
① When the isolating brake is separated and the grounding brake is separated, the isolating brake and the grounding brake can be operated.
② Only the "isolation brake-separating" action can be performed in the "isolation brake-closing" position.
③ Only the ground opening action can be executed in the ground closing position.
④ The motor does not perform any action when in action.
⑤ The abnormal position is operated by hand.
When the three-station running-in test system is used for running-in test, hand operation, manual operation and automatic operation can be adopted according to requirements.
When in hand operation, a hand operation and electric mode switching switch is arranged through the HMI, and the hand operation and the electric mode can be switched; in hand-operated mode, contacts 9-10 and 71-72 are connected to a power source (DC 110 or DC220V, and the motor power source is the same power source) for hand-operated operation, and the electric mode is disabled. After the HMI is switched to the hand-operated mode, the contacts 9-10 and 71-72 are automatically connected with a power supply together; and switching to an electric mode, wherein the two groups of terminals are automatically disconnected from the power supply.
When the manual operation is carried out, setting a hand-operated and electric mode through the HMI; the operation is only performed when the state of the contact 3-4 is monitored to be 1 in the electric mode. The electric mode includes a manual mode and an automatic mode. The mode is provided with four buttons of isolation switch-on, separation switch-off, grounding switch-on and grounding switch-off.
In the case of automatic operation, this can be done in two cycles.
The first circulation mode is that one side is ground up and the other side is ground up, and the operation process is as follows in combination with fig. 5:
The position of the isolation brake-separating position operates to the position of the isolation brake-closing position, a timer is started to count at the same time, and a contact acts in the running process of the motor, so that the motor is stopped after 20ms (can be set); if the contact does not act within the set time of the timer, stopping the machine to give an alarm;
b. Delay 10s (settable);
c. running at the 'isolation closing' position to the 'isolation opening' position, starting a timer to count at the same time, and delaying 20ms (settable) stop when the contact acts in the running process of the motor; if the timer still has no contact action within the set time, the machine stops alarming. The primary isolation opening/closing running-in is completed;
d. After time delay (settable), the next isolation brake-separating/brake-closing running-in cycle is continued until the isolation brake-separating/brake-closing running-in times are finished;
e. Running in the 'grounding opening' position to the 'grounding closing' position, starting a timer to count at the same time, and delaying 20ms (settable) stop when the contact acts in the running process of the motor; if the contact does not act within the set time of the timer, stopping the machine to give an alarm;
f. Delay 10s (settable);
g. Running in a 'grounding closing' position to a 'grounding opening' position, starting a timer to count at the same time, and delaying 20ms (settable) stop when a contact acts in the running process of the motor; if the contact point of the timer still does not act within the set time, the machine stops for alarming. The primary grounding opening/closing running-in is completed;
h. after time delay (settable), the next ground breaking/closing running-in cycle is continued until the ground breaking/closing running-in times are finished;
i. ending the test.
Wherein, the second circulation mode is the large circulation running-in, and the operation process is as follows in combination with fig. 6:
The position of the isolation brake-separating position operates to the position of the isolation brake-closing position, a timer is started to count at the same time, and a contact acts in the running process of the motor, so that the motor is stopped after 20ms (can be set); if the contact does not act within the set time of the timer, stopping the machine to give an alarm;
b. Delay 10s (settable);
c. running at the 'isolation closing' position to the 'isolation opening' position, starting a timer to count at the same time, and delaying 20ms (settable) stop when the contact acts in the running process of the motor; if the contact does not act within the set time of the timer, stopping the machine to give an alarm;
d. delay 10s (settable);
e. running from the 'grounding opening' position to the 'grounding closing' position, starting a timer to count at the same time, and delaying 20ms (settable) stop when the contact acts in the running process of the motor; if the contact does not act within the set time of the timer, stopping the machine to give an alarm;
f. Delay 10s (settable);
g. Running in a 'grounding closing' position to a 'grounding opening' position, starting a timer to count at the same time, and delaying 20ms (settable) stop when a contact acts in the running process of the motor; if the contact point of the timer does not act within the set time, stopping the machine to give an alarm, and completing one cycle;
h. and stopping testing according to the flow until the set circulation times are reached.
The foregoing has shown and described the basic principles, principal features and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. Three station running-in test system, its characterized in that includes: PLC, voltage regulator, multiple groups of adjustable power supplies, motor controller and contactor; the PLC is connected with a plurality of groups of adjustable power supplies in a control way and is connected to a three-station mechanism through a voltage regulator; the output end of the voltage regulator is also connected to an analog input port of the PLC; the PLC is respectively connected with the three-station direct current motor through the motor controller and the contactor in a control mode.
2. The three-position break-in test system of claim 1, wherein the three-position break-in test system connects the switching value signal to the device under test through the navigation interface, respectively confirms the navigation plug for the 1-way position contact, 2 sets of break-in navigation plugs.
3. The three-position break-in test system of claim 2, wherein each set of auxiliary contacts of the position contact validation aviation plug is input into the DIO module of the PLC after being connected to a separate adjustable power supply when the position contacts of the three-position break-in test system are validated.
4. The three-position break-in test system of claim 1, wherein the three-position break-in test system monitors motor voltage, current, and records maximum current during break-in testing in real time.
5. The three-position break-in test system of claim 1, wherein the three-position break-in test system is configured to shut down an alarm when motor current exceeds a set threshold during a break-in test.
6. The three-position break-in test system of claim 1, wherein an HMI is configured in the three-position break-in test system.
7. The three-station break-in test system according to claim 1, wherein three sets of adjustable power supplies are configured in the three-station break-in test system, and the three can be independently operated between the wire inspection and the two-way break-in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311691881.1A CN117929979A (en) | 2023-12-10 | 2023-12-10 | Three-station running-in test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311691881.1A CN117929979A (en) | 2023-12-10 | 2023-12-10 | Three-station running-in test system |
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| Publication Number | Publication Date |
|---|---|
| CN117929979A true CN117929979A (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311691881.1A Pending CN117929979A (en) | 2023-12-10 | 2023-12-10 | Three-station running-in test system |
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| Country | Link |
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| CN (1) | CN117929979A (en) |
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- 2023-12-10 CN CN202311691881.1A patent/CN117929979A/en active Pending
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