CN218916412U - Temperature and humidity monitoring system of high-voltage frequency converter - Google Patents
Temperature and humidity monitoring system of high-voltage frequency converter Download PDFInfo
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- CN218916412U CN218916412U CN202222294537.6U CN202222294537U CN218916412U CN 218916412 U CN218916412 U CN 218916412U CN 202222294537 U CN202222294537 U CN 202222294537U CN 218916412 U CN218916412 U CN 218916412U
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Abstract
The utility model provides a temperature and humidity monitoring system of a high-voltage frequency converter, which relates to the technical field of equipment monitoring and comprises the following components: the temperature and humidity sensing transmitters are used for collecting temperature and humidity data, converting the temperature and humidity data into electric signals and sending the electric signals to the analog quantity input expansion unit and the analog quantity output expansion unit; the analog quantity input expansion unit is used for sending the electric signal to the PLC so that the PLC determines a target electric signal and generates alarm information corresponding to the target electric signal, wherein the target electric signal is an electric signal with temperature and humidity data corresponding to the electric signal being greater than a preset threshold value; the processing unit is used for sending the electric signals to a man-machine interaction interface of the high-voltage frequency converter; the analog quantity output expansion unit is used for sending alarm information and target electric signals to the automatic control system, and the technical problem that real-time monitoring of temperature and humidity data of key positions of the high-voltage frequency converter is difficult to achieve is solved.
Description
Technical Field
The utility model relates to the technical field of power equipment, in particular to a temperature and humidity monitoring system of a high-voltage frequency converter.
Background
The temperature and humidity of the heavy point parts such as the phase-shifting transformer, the power unit cabinet and the control cabinet of the existing high-voltage frequency converter cannot be detected in real time, no clear display exists on a man-machine exchange picture, and difficulty is caused to real-time monitoring of the operation working condition of equipment. The summer air temperature in Yueyang area is higher, the unit load is larger during the period of peak-to-peak summer, and larger pressure is brought to the high-voltage frequency conversion device of each large motor.
According to statistics, the frequency converter power unit (module) has various light faults and heavy fault rates in the spring and summer seasons. Severe environmental factors such as high temperature and high humidity will directly affect important components in the power unit cabinet, such as: performance and lifetime of fuses, rectifier bridges, capacitors, (IGBTs), dc grading resistors, control boards, drive boards, etc. The environment condition (temperature and humidity) of the operation of the frequency converter cannot be monitored in real time, so that the general light fault cannot be pre-judged and pre-processed, and the delay is developed into the heavy fault. The frequency conversion device of the important motor (such as a primary fan, a condensing pump and the like) can give out heavy fault alarm, and if the heavy fault alarm can not be properly processed in time, the safe and stable operation of the unit during the peak-welcome summer period can be seriously threatened.
An effective solution to the above-mentioned problems has not been proposed yet.
Disclosure of Invention
Therefore, the utility model aims to provide a temperature and humidity monitoring system of a high-voltage frequency converter, so as to relieve the technical problem that temperature and humidity data of key positions of the high-voltage frequency converter are difficult to monitor in real time.
In a first aspect, an embodiment of the present utility model provides a temperature and humidity monitoring system of a high-voltage frequency converter, including: the system comprises a plurality of temperature and humidity sensing transmitters, a processing unit, an analog input expansion unit and an analog output expansion unit, wherein the analog input expansion unit is respectively connected with PLCs (programmable logic controllers) of the power control cabinets of the temperature and humidity sensing transmitters and the high-voltage frequency converter, and the PLCs are respectively connected with the analog output expansion unit and the processing unit; the temperature and humidity data are collected and converted into electric signals, and the electric signals are sent to the analog quantity input expansion unit and the analog quantity output expansion unit, wherein the temperature and humidity data comprise: temperature and humidity data of each phase winding of the phase-shifting transformer, temperature and humidity data of the inside of an iron core of the phase-shifting transformer, and temperature and humidity data of each phase of a rectifying power unit of the high-voltage frequency converter; the analog input expansion unit is used for sending the electric signal to the PLC so that the PLC determines a target electric signal and generates alarm information corresponding to the target electric signal, wherein the target electric signal is an electric signal with temperature and humidity data corresponding to the electric signal being greater than a preset threshold value; the processing unit is used for sending the electric signals to a man-machine interaction interface of the high-voltage frequency converter; the analog quantity output expansion unit is used for sending the alarm information and the target electric signal to the automatic control system.
Further, the plurality of temperature and humidity sensing transmitters includes: the temperature and humidity sensing system comprises a first temperature and humidity sensing transmitter group and a second temperature and humidity sensing transmitter group, wherein the first temperature and humidity sensing transmitter group comprises 4 first sub-temperature and humidity sensing transmitters, 3 first sub-temperature and humidity sensing transmitters are arranged at three-phase windings of a phase-shifting transformer, 1 first sub-temperature and humidity sensing transmitter is arranged at an iron core of the phase-shifting transformer, the second temperature and humidity sensing transmitter group comprises 18 second sub-temperature and humidity sensing transmitters, rectifying power units of a high-voltage frequency converter are three-phase and each corresponding 6 power units of the rectifying power units of the high-voltage frequency converter, and each power unit is provided with 1 second sub-temperature and humidity sensing transmitter.
Further, the first temperature and humidity sensing transmitter group is used for collecting temperature and humidity data of each phase winding of the phase-shifting transformer and temperature and humidity data of the interior of the iron core of the phase-shifting transformer; and the second temperature and humidity sensing transmitter group is used for collecting temperature and humidity data of power units of each phase of the rectifying power unit of the high-voltage frequency converter.
Further, the processing unit is a CPU226 module controller; the analog input expansion unit is an EM235 module; the analog output expansion unit is an EM232 module.
In an embodiment of the present utility model, a temperature and humidity monitoring system of a high-voltage frequency converter includes: the system comprises a plurality of temperature and humidity sensing transmitters, a processing unit, an analog input expansion unit and an analog output expansion unit, wherein the analog input expansion unit is respectively connected with PLCs (programmable logic controllers) of the power control cabinets of the temperature and humidity sensing transmitters and the high-voltage frequency converter, and the PLCs are respectively connected with the analog output expansion unit and the processing unit; the temperature and humidity data are collected and converted into electric signals, and the electric signals are sent to the analog quantity input expansion unit and the analog quantity output expansion unit, wherein the temperature and humidity data comprise: temperature and humidity data of each phase winding of the phase-shifting transformer, temperature and humidity data of the inside of an iron core of the phase-shifting transformer, and temperature and humidity data of each phase of a rectifying power unit of the high-voltage frequency converter; the analog input expansion unit is used for sending the electric signal to the PLC so that the PLC determines a target electric signal and generates alarm information corresponding to the target electric signal, wherein the target electric signal is an electric signal with temperature and humidity data corresponding to the electric signal being greater than a preset threshold value; the processing unit is used for sending the electric signals to a man-machine interaction interface of the high-voltage frequency converter; the analog quantity output expansion unit is used for sending the alarm information and the target electric signal to the automatic control system, achieves the purpose of monitoring temperature and humidity data of the phase-shifting transformer and the rectifying power unit of the high-voltage frequency converter in real time, and further solves the technical problem that the temperature and humidity data of important parts of the high-voltage frequency converter are difficult to monitor in real time, and therefore achieves the technical effect of improving operation safety of the high-voltage frequency converter.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a temperature and humidity monitoring system of a high-voltage frequency converter according to an embodiment of the present utility model;
fig. 2 is a schematic diagram of a high-voltage inverter according to an embodiment of the present utility model;
FIG. 3 is a control wiring diagram of an EM235 module provided in an embodiment of the present utility model;
FIG. 4 is a control wiring diagram of an EM235 module provided by an embodiment of the present utility model;
FIG. 5 is a control wiring diagram of a CPU226 module controller according to an embodiment of the present utility model;
FIG. 6 is a control wiring diagram of an EM232 module provided in an embodiment of the present utility model;
fig. 7 is a control wiring diagram of an EM232 module provided by an embodiment of the present utility model.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiment one:
according to an embodiment of the present utility model, an embodiment of a temperature and humidity monitoring system of a high-voltage inverter is provided, and fig. 1 is a schematic diagram of a temperature and humidity monitoring system of a high-voltage inverter according to an embodiment of the present utility model, as shown in fig. 1, the temperature and humidity monitoring system of the high-voltage inverter includes: the system comprises a plurality of temperature and humidity sensing transmitters 10, a processing unit 20, an analog input expansion unit 30 and an analog output expansion unit 40, wherein the analog input expansion unit is respectively connected with PLCs (programmable logic controllers) of the power control cabinets of the temperature and humidity sensing transmitters and the high-voltage frequency converter, and the PLCs are respectively connected with the analog output expansion unit and the processing unit;
the temperature and humidity data are collected and converted into electric signals, and the electric signals are sent to the analog quantity input expansion unit and the analog quantity output expansion unit, wherein the temperature and humidity data comprise: temperature and humidity data of each phase winding of the phase-shifting transformer, temperature and humidity data of the inside of an iron core of the phase-shifting transformer, and temperature and humidity data of each phase of a rectifying power unit of the high-voltage frequency converter;
the analog input expansion unit is used for sending the electric signal to the PLC so that the PLC determines a target electric signal and generates alarm information corresponding to the target electric signal, wherein the target electric signal is an electric signal with temperature and humidity data corresponding to the electric signal being greater than a preset threshold value;
the processing unit is used for sending the electric signals to a man-machine interaction interface of the high-voltage frequency converter;
the analog quantity output expansion unit is used for sending the alarm information and the target electric signal to the automatic control system.
In an embodiment of the present utility model, a temperature and humidity monitoring system of a high-voltage frequency converter includes: the system comprises a plurality of temperature and humidity sensing transmitters, a processing unit, an analog input expansion unit and an analog output expansion unit, wherein the analog input expansion unit is respectively connected with PLCs (programmable logic controllers) of the power control cabinets of the temperature and humidity sensing transmitters and the high-voltage frequency converter, and the PLCs are respectively connected with the analog output expansion unit and the processing unit; the temperature and humidity data are collected and converted into electric signals, and the electric signals are sent to the analog quantity input expansion unit and the analog quantity output expansion unit, wherein the temperature and humidity data comprise: temperature and humidity data of each phase winding of the phase-shifting transformer, temperature and humidity data of the inside of an iron core of the phase-shifting transformer, and temperature and humidity data of each phase of a rectifying power unit of the high-voltage frequency converter; the analog input expansion unit is used for sending the electric signal to the PLC so that the PLC determines a target electric signal and generates alarm information corresponding to the target electric signal, wherein the target electric signal is an electric signal with temperature and humidity data corresponding to the electric signal being greater than a preset threshold value; the processing unit is used for sending the electric signals to a man-machine interaction interface of the high-voltage frequency converter; the analog quantity output expansion unit is used for sending the alarm information and the target electric signal to the automatic control system, achieves the purpose of monitoring temperature and humidity data of the phase-shifting transformer and the rectifying power unit of the high-voltage frequency converter in real time, and further solves the technical problem that the temperature and humidity data of important parts of the high-voltage frequency converter are difficult to monitor in real time, and therefore achieves the technical effect of improving operation safety of the high-voltage frequency converter.
As shown in fig. 2, the high-voltage inverter includes: the transformer cabinet moves to the transformer, the transformer cooling fan, the unit cabinet cooling fan, the power unit cabinet, the power unit, the man-machine interaction interface, the charging resistor, the control cabinet and the like.
It should be noted that, the above-mentioned a plurality of temperature and humidity sensing transmitters includes: the temperature and humidity sensing system comprises a first temperature and humidity sensing transmitter group and a second temperature and humidity sensing transmitter group, wherein the first temperature and humidity sensing transmitter group comprises 4 first sub-temperature and humidity sensing transmitters, 3 first sub-temperature and humidity sensing transmitters are arranged at three-phase windings of a phase-shifting transformer, 1 first sub-temperature and humidity sensing transmitter is arranged at an iron core of the phase-shifting transformer, the second temperature and humidity sensing transmitter group comprises 18 second sub-temperature and humidity sensing transmitters, rectifying power units of a high-voltage frequency converter are three-phase and each corresponding 6 power units of the rectifying power units of the high-voltage frequency converter, and each power unit is provided with 1 second sub-temperature and humidity sensing transmitter.
The first temperature and humidity sensing transmitter group is used for acquiring temperature and humidity data of each phase winding of the phase-shifting transformer and temperature and humidity data of the interior of the iron core of the phase-shifting transformer;
and the second temperature and humidity sensing transmitter group is used for collecting temperature and humidity data of power units of each phase of the rectifying power unit of the high-voltage frequency converter.
The analog input expansion unit is an EM235 module, as shown in fig. 3 and fig. 4, and the first temperature and humidity sensing transmitter set includes: and the # moving direction is A, the # moving direction is B, the # moving direction is C and the # iron core, wherein the # moving direction is A, the # moving direction is B and the # moving direction is C, the # moving direction is used for collecting temperature and humidity data of an A-phase winding, a B-phase winding and a C-phase winding in the phase-shifting transformer respectively, and the # iron core is used for collecting temperature and humidity data inside the iron core of the phase-shifting transformer.
The second temperature and humidity sensing transmitter group includes: the system comprises a # A1 power unit, a # A6 power unit, a # B1 power unit, a # C1 power unit and a # C6 power unit, wherein the # A1 power unit, the # A6 power unit, the # B1 power unit, the # B6 power unit, the # C1 power unit and the # C6 power unit are respectively used for acquiring temperature and humidity data of an A phase winding of the 6 power unit, the # B1 power unit, the # B6 power unit and the # C6 power unit.
Preferably, the processing unit is a CPU226 module controller, as shown in fig. 5; the analog output expansion unit is an EM232 module, as shown in fig. 6 and 7.
In the embodiment of the utility model, the function of the existing PLC control panel is expanded by optimizing the built-in PLC signal acquisition function of the high-voltage frequency converter controller, so that the device has economic applicability; the temperature and humidity of key positions such as the inside of the phase-shifting transformer and the power unit cabinet are monitored in real time, and the alarm value is transmitted to the DCS background, so that the monitoring of the operating working condition of the frequency converter device by an operator on duty is enhanced; the power units with high influence by high temperature and high fault rate are monitored one by one, the early warning performance of light faults and heavy faults is improved, and the preprocessing range of the power units is reduced.
In addition, in the description of embodiments of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in the embodiments of the present utility model may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
Finally, it should be noted that: the above examples are only specific embodiments of the present utility model, and are not intended to limit the scope of the present utility model, but it should be understood by those skilled in the art that the present utility model is not limited thereto, and that the present utility model is described in detail with reference to the foregoing examples: any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or perform equivalent substitution of some of the technical features, while remaining within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model, and are intended to be included in the scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.
Claims (4)
1. A temperature and humidity monitoring system of a high voltage frequency converter, comprising: the system comprises a plurality of temperature and humidity sensing transmitters, a processing unit, an analog input expansion unit and an analog output expansion unit, wherein the analog input expansion unit is respectively connected with PLCs (programmable logic controllers) of the power control cabinets of the temperature and humidity sensing transmitters and the high-voltage frequency converter, and the PLCs are respectively connected with the analog output expansion unit and the processing unit;
the temperature and humidity data are collected and converted into electric signals, and the electric signals are sent to the analog quantity input expansion unit and the analog quantity output expansion unit, wherein the temperature and humidity data comprise: temperature and humidity data of each phase winding of the phase-shifting transformer, temperature and humidity data of the inside of an iron core of the phase-shifting transformer, and temperature and humidity data of each phase of a rectifying power unit of the high-voltage frequency converter;
the analog input expansion unit is used for sending the electric signal to the PLC so that the PLC determines a target electric signal and generates alarm information corresponding to the target electric signal, wherein the target electric signal is an electric signal with temperature and humidity data corresponding to the electric signal being greater than a preset threshold value;
the processing unit is used for sending the electric signals to a man-machine interaction interface of the high-voltage frequency converter;
the analog quantity output expansion unit is used for sending the alarm information and the target electric signal to the automatic control system.
2. The system of claim 1, wherein the plurality of temperature and humidity sensing transmitters comprises: the temperature and humidity sensing system comprises a first temperature and humidity sensing transmitter group and a second temperature and humidity sensing transmitter group, wherein the first temperature and humidity sensing transmitter group comprises 4 first sub-temperature and humidity sensing transmitters, 3 first sub-temperature and humidity sensing transmitters are arranged at three-phase windings of a phase-shifting transformer, 1 first sub-temperature and humidity sensing transmitter is arranged at an iron core of the phase-shifting transformer, the second temperature and humidity sensing transmitter group comprises 18 second sub-temperature and humidity sensing transmitters, rectifying power units of a high-voltage frequency converter are three-phase and each corresponding 6 power units of the rectifying power units of the high-voltage frequency converter, and each power unit is provided with 1 second sub-temperature and humidity sensing transmitter.
3. The system for monitoring the temperature and humidity of a high-voltage frequency converter according to claim 2, wherein,
the first temperature and humidity sensing transmitter group is used for acquiring temperature and humidity data of each phase winding of the phase-shifting transformer and temperature and humidity data of the interior of the iron core of the phase-shifting transformer;
and the second temperature and humidity sensing transmitter group is used for collecting temperature and humidity data of power units of each phase of the rectifying power unit of the high-voltage frequency converter.
4. The system for monitoring the temperature and humidity of a high-voltage frequency converter according to claim 1, wherein the system comprises a temperature sensor,
the processing unit is a CPU226 module controller;
the analog input expansion unit is an EM235 module;
the analog output expansion unit is an EM232 module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222294537.6U CN218916412U (en) | 2022-08-30 | 2022-08-30 | Temperature and humidity monitoring system of high-voltage frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222294537.6U CN218916412U (en) | 2022-08-30 | 2022-08-30 | Temperature and humidity monitoring system of high-voltage frequency converter |
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| CN218916412U true CN218916412U (en) | 2023-04-25 |
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| CN202222294537.6U Active CN218916412U (en) | 2022-08-30 | 2022-08-30 | Temperature and humidity monitoring system of high-voltage frequency converter |
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| CN (1) | CN218916412U (en) |
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- 2022-08-30 CN CN202222294537.6U patent/CN218916412U/en active Active
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