CN214315032U - High-voltage frequency converter with multiple fault positioning functions - Google Patents
High-voltage frequency converter with multiple fault positioning functions Download PDFInfo
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- CN214315032U CN214315032U CN202120364895.2U CN202120364895U CN214315032U CN 214315032 U CN214315032 U CN 214315032U CN 202120364895 U CN202120364895 U CN 202120364895U CN 214315032 U CN214315032 U CN 214315032U
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Abstract
The utility model discloses a high-voltage inverter with multiple fault location function relates to converter fault detection technical field, and data transmission fiber interface passes through fiber connection unit data and accepts fiber interface, and unit data transmission fiber interface passes through fiber connection master control data and accepts fiber interface, is equipped with the power subunit in each power unit, and the power subunit passes through fiber connection, realizes pinpointing fault occurrence unit and trouble problem in to high-voltage inverter. The power units at all levels of the frequency converter are connected with the main control unit through optical fibers, and unit information is transmitted to the next level in sequence in a serial communication mode. When the optical fiber connection is normal, if a fault occurs, the specific fault of the fault power unit can be accurately positioned, and also when the optical fiber is disconnected, the communication fault unit with the disconnected optical fiber can be accurately positioned, the fault unit information is displayed on a touch screen human-computer interface, the fault part can be quickly replaced, and the reliability of the frequency converter is improved.
Description
Technical Field
The utility model relates to a converter fault detection technical field, concretely relates to high-voltage inverter with multiple fault location function.
Background
The frequency converter is an electric energy control device which converts a power frequency power supply into another frequency by utilizing the on-off action of a power semiconductor device. When the high-voltage frequency converter is in operation, because of the influence of the operation environment or the sudden change of the operation condition, the problems of output overcurrent, unit overvoltage, communication fault and the like sometimes occur. How to accurately find out the fault unit and determine what kind of fault is very important for improving the reliability of the frequency converter. In practice, the fault locating unit which is often reported is not a direct fault of a really problematic component, so that technicians are inconvenient to troubleshoot the frequency converter.
Therefore, how to solve the above problems is a great need.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides a high-voltage frequency converter with multiple fault location functions, which can obtain real-time states of various units of the high-voltage frequency converter, and can accurately locate a specific fault of a specific unit if a unit fault occurs when an optical fiber connection is normal. When the optical fiber connection is disconnected, the communication fault unit with the disconnected optical fiber can be accurately positioned. The convenience of the maintainer can be realized by quickly replacing the fault part, and the reliability of the frequency converter is improved.
The utility model discloses a following technical scheme realizes:
a high-voltage frequency converter with multiple fault locating functions comprises a high-voltage frequency converter body, a control cabinet, a unit cabinet and a transformer cabinet, the control cabinet is internally provided with a main control unit which is provided with a serial interface, a main control data transmitting optical fiber interface and a main control data receiving optical fiber interface, a plurality of power units are arranged in the unit cabinet, each power unit is provided with a unit data receiving optical fiber interface, a unit data transmitting optical fiber interface and an optical fiber interface, a transformer is arranged in the transformer cabinet, the data transmitting optical fiber interface is connected with the unit data receiving optical fiber interface through an optical fiber, the unit data sending optical fiber interface is connected with the main control data receiving optical fiber interface through an optical fiber, a power subunit is arranged in each power unit, and the power subunits are connected through the optical fiber.
In the scheme, the fault occurrence unit and the fault problem are accurately positioned in the high-voltage frequency converter. The power units at all levels of the frequency converter are connected with the main control unit through optical fibers, and unit information is transmitted to the next level in sequence in a serial communication mode. When the optical fiber connection is normal, if a fault occurs, the specific fault of the fault power unit can be accurately positioned, and when the optical fiber is disconnected, the communication fault unit with the disconnected optical fiber can be accurately positioned.
Furthermore, the power subunit is provided with a subunit communication fault monitoring module, an unconnected fault monitoring module, an overvoltage alarm fault monitoring module, a unit overheating fault monitoring module, a unit open-phase fault monitoring module, a unit overvoltage fault monitoring module, a unit driving fault monitoring module and a unit power-off fault monitoring module.
In the scheme, due to the arrangement of the plurality of fault monitoring modules, fault reasons can be better analyzed, and fault problems can be better analyzed.
Preferably, the power subunit is further provided with a fault lamp, a subunit data receiving optical fiber port and a subunit data transmitting optical fiber port.
In the scheme, the subunit data receiving optical fiber port and the subunit data sending optical fiber port realize data transmission among the power subunits.
Furthermore, the outer surface of the control cabinet is provided with a human-computer interaction touch screen, so that the information of the fault unit is displayed on the human-computer interaction touch screen, and the fault point can be conveniently confirmed by a maintainer.
Preferably, the surface of the control cabinet is also provided with a light fault indicator lamp and a heavy fault indicator lamp, so that an automatic alarm function is realized, and maintenance personnel are reminded to timely treat and avoid serious loss caused by equipment damage.
Optionally, the main control unit is provided with a serial interface and is connected with the man-machine interaction touch screen.
Optionally, the serial interface is an RS485 serial port.
Compared with the prior art, the utility model, following advantage and beneficial effect have:
the utility model relates to a high-voltage inverter with multiple fault location function pinpoints trouble occurrence unit and trouble problem in the main control unit, is connected the power unit at different levels of converter and converter main control unit through optic fibre, passes through serial communication mode and down one-level transmission in proper order with unit information. When the optical fiber connection is normal, if a fault occurs, the specific fault of the fault unit can be accurately positioned, and when the optical fiber is disconnected, the communication fault unit with the disconnected optical fiber can be accurately positioned. And displaying the information of the fault unit on a touch screen human-computer interface on the frequency converter control cabinet. The system can accurately position and display the first fault point of the fault of the frequency converter, so that a maintainer can quickly replace the fault part in actual use, the frequency converter is put into use again, and the reliability of the high-voltage frequency converter is improved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:
fig. 1 is a schematic view of the overall structure in the embodiment of the present invention;
fig. 2 is a schematic structural diagram of a power subunit in the embodiment of the present invention;
fig. 3 is a connection diagram of the load motor and the main control unit in the embodiment of the present invention;
reference numbers and corresponding part names:
1. a control cabinet; 2. a unit cabinet; 3. a transformer cabinet; 4. a main control unit; 5. a power unit; 6. a transformer; 7. a unit data receiving optical fiber interface; 8. a unit data transmission optical fiber interface; 9. a power subunit; 10. a subunit fault indicator light; 11. an optical fiber; 12. a main control data transmission optical fiber interface; 13. a main control data receiving optical fiber interface; 14. a light fault indicator light; 15. a heavy fault indicator light; 16. a serial interface; 17. a human-computer interaction touch screen; 18. a subunit communication fault monitoring module; 19. a non-connected fault monitoring module; 20. an overvoltage alarm fault monitoring module; 21. a unit overheating fault monitoring module; 22. a unit phase failure monitoring module; 23. a unit overvoltage fault monitoring module; 24. a unit drive fault monitoring module; 25. a unit power-loss fault monitoring module; 26. a fault light; 27. a subunit data receiving fiber port; 28. and the subunit data transmitting optical fiber port.
Detailed Description
To make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the following examples and drawings, and the exemplary embodiments and descriptions thereof of the present invention are only used for explaining the present invention, and are not intended as limitations of the present invention.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, it will be apparent to one of ordinary skill in the art that: it is not necessary to employ these specific details to practice the invention. In other instances, well-known structures, circuits, materials, or methods have not been described in detail so as not to obscure the present invention.
Throughout the specification, reference to "one embodiment," "an embodiment," "one example," or "an example" means: the particular features, structures, or characteristics described in connection with the embodiment or example are included in at least one embodiment of the present invention. Thus, the appearances of the phrases "one embodiment," "an embodiment," "one example" or "an example" in various places throughout this specification are not necessarily all referring to the same embodiment or example. Furthermore, the particular features, structures, or characteristics may be combined in any suitable combination and/or sub-combination in one or more embodiments or examples. Further, those of ordinary skill in the art will appreciate that the illustrations provided herein are for illustrative purposes and are not necessarily drawn to scale. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In the description of the present invention, it should be understood that the terms "front", "back", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the scope of the present invention.
Examples
As shown in fig. 1, the utility model relates to a high-voltage inverter with multiple fault locate function, including the high-voltage inverter body, the high-voltage inverter body still includes switch board 1, unit cabinet 2 and transformer cabinet 3, be provided with main control system 4, switch board surface in the switch board 1 and be equipped with human-computer interaction interface touch-sensitive screen 17, light fault indicator 14, heavy fault indicator 15, last RS485 serial ports 16, the main control data send optical fiber mouth 12 and the main control data receive optical fiber mouth such as optical fiber mouth 13. The unit cabinet 2 is internally provided with a 6-level power unit system 5, taking a first-level unit as an example, the first-level unit is provided with an A1 power unit 9, an A1 unit fault indicator lamp 10, a unit data receiving optical fiber port 7, a unit data transmitting optical fiber port 8 and an optical fiber 11. The main control data transmitting optical fiber port 12 is connected with the unit data receiving optical fiber port 7 through optical fibers, the unit data transmitting optical fiber port 8 is connected with the main control data receiving optical fiber port 13 through optical fibers, and three units of each level of power unit are also connected through optical fibers to transmit unit information. A transformer 6 is arranged in the transformer cabinet 3.
In some embodiments, as shown in fig. 2, 8 fault information monitoring modules are installed on the power subunit, which are a subunit communication fault monitoring module 18, an unconnected fault monitoring module 19, an overvoltage alarm fault monitoring module 20, a subunit overheat fault monitoring module 21, a unit open-phase fault monitoring module 22, a unit overvoltage fault monitoring module 23, a unit driving fault monitoring module 24, and a unit power-off fault monitoring module 25. And a unit fault indicator lamp 26, a unit data receiving optical fiber port 27 and a unit data sending optical fiber port 28 are arranged at the same time, and the accurate analysis and processing of faults are realized.
In some embodiments, as shown in fig. 2, the power subunit is further provided with a subunit failure indicator light 26, a subunit data receiving fiber port 27 and a subunit data transmitting fiber port 28, which checks the operating status of the subunit.
Preferably, in the above embodiment, an optical fiber is arranged before each subunit to realize data transmission between the subunits.
In some embodiments, as shown in FIG. 3, the master control unit includes a plurality of sub-units such as, for example, A1-A6 unit, B1-B6 unit, C1-C6 unit, and the data transmitting end and the data receiving end are connected to the master control unit as shown and then connected to the load motor.
When the optical fiber connection is normal, the A1 unit transmits the unit fault information to the B1 unit, and the B1 unit retains the state of the A1 unit and transmits the state to the C1 in sequence, until the return master control is started when the optical fiber is disconnected. When a unit fails, the failure indicator lamp 26 of the unit is turned on to give a red alarm. Finally, the fault information is sent to the main control unit through the optical fiber, and the main control unit stores the unit fault information and carries out processing such as bypass or shutdown on the frequency converter according to different fault types.
In addition, when the system enters a shutdown state, the heavy fault indicator lamp 15 is turned on to give a red alarm. Meanwhile, the processed fault information is sent to a touch screen human-computer interface 17 through an RS485 serial port 16, the fault information of all power units of the current frequency converter is displayed on the human-computer interface in real time, and specific fault units and fault information types are displayed in real time.
And a unit state display interface in the touch screen human-computer interface displays the fault information of all units of the frequency converter. When a certain unit breaks down, the unit and the fault indicator light turn on the red light, the unit button is clicked, the real-time state of the unit is entered, and the specific fault can be displayed.
It should be noted that, as shown in fig. 3, A, B, C respectively corresponds to three-phase power unit modules, where a1-a6 are a phases, B1-B6 are B phases, and C1-C6 are C phases, and three output voltages are connected to a load motor, where the main control unit is connected to the power units in a serial communication manner, so that the main control unit controls the three-phase power units, and the main control unit finally controls the three-phase power units to a1, B1, and C1, and then the output voltages of the three-phase power units drive the load motor.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. A high-voltage frequency converter with multiple fault positioning functions comprises a high-voltage frequency converter body, and is characterized in that the high-voltage frequency converter body also comprises a control cabinet (1), a unit cabinet (2) and a transformer cabinet (3),
a main control unit (4) is arranged in the control cabinet (1), and the main control unit (4) is provided with a serial interface (16), a main control data transmitting optical fiber interface (12) and a main control data receiving optical fiber interface (13);
a plurality of power units (5) are arranged in the unit cabinet (2), and each power unit (5) is provided with a unit data receiving optical fiber interface (7), a unit data sending optical fiber interface (8) and an optical fiber interface;
a transformer (6) is arranged in the transformer cabinet (3);
the main control data sending optical fiber interface (12) is connected with the unit data receiving optical fiber interface (7) through optical fibers, the unit data sending optical fiber interface (8) is connected with the main control data receiving optical fiber interface (13) through optical fibers, each power unit (5) is internally provided with a power subunit (9), and the plurality of power subunits (9) are connected through optical fibers.
2. The high-voltage frequency converter with multiple fault locating functions according to claim 1, wherein the power subunit (9) is provided with a subunit communication fault monitoring module (18), an unconnected fault monitoring module (19), an overvoltage alarm fault monitoring module (20), a unit overheat fault monitoring module (21), a unit open-phase fault monitoring module (22), a unit overvoltage fault monitoring module (23), a unit drive fault monitoring module (24) and a unit power-loss fault monitoring module (25).
3. The high-voltage frequency converter with multiple fault location functions as claimed in claim 2, wherein the power subunit (9) is further provided with a fault lamp (26), a subunit data receiving optical fiber port (27) and a subunit data transmitting optical fiber port (28).
4. The high-voltage frequency converter with multiple fault locating functions as claimed in claim 1, wherein a human-computer interaction touch screen (17) is arranged on an outer surface of the control cabinet (1).
5. The high-voltage frequency converter with multiple fault location functions as claimed in claim 1, wherein the outer surface of the control cabinet (1) is further provided with a light fault indicator lamp (14) and a heavy fault indicator lamp (15).
6. The high-voltage frequency converter with multiple fault location functions as claimed in claim 4, wherein the main control unit (4) is connected with the human-computer interaction touch screen (17) through a serial interface (16).
7. The high-voltage frequency converter with the multiple fault locating functions as claimed in claim 6, wherein the serial interface (16) is an RS485 serial interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120364895.2U CN214315032U (en) | 2021-02-07 | 2021-02-07 | High-voltage frequency converter with multiple fault positioning functions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120364895.2U CN214315032U (en) | 2021-02-07 | 2021-02-07 | High-voltage frequency converter with multiple fault positioning functions |
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| Publication Number | Publication Date |
|---|---|
| CN214315032U true CN214315032U (en) | 2021-09-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120364895.2U Active CN214315032U (en) | 2021-02-07 | 2021-02-07 | High-voltage frequency converter with multiple fault positioning functions |
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| Country | Link |
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| CN (1) | CN214315032U (en) |
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2021
- 2021-02-07 CN CN202120364895.2U patent/CN214315032U/en active Active
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