CN210324524U - Stator current monitoring and alarming system of synchronous motor - Google Patents
Stator current monitoring and alarming system of synchronous motor Download PDFInfo
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- CN210324524U CN210324524U CN201921684554.2U CN201921684554U CN210324524U CN 210324524 U CN210324524 U CN 210324524U CN 201921684554 U CN201921684554 U CN 201921684554U CN 210324524 U CN210324524 U CN 210324524U
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Abstract
The application discloses a stator current monitoring and alarming system of a synchronous motor, which comprises an alarm switch; a current transducer for converting the stator current into a standard current signal; the processor is connected with the current transmitter and the alarm switch, and closes the alarm switch when the standard current signal meets an alarm condition; and the alarm is connected with the alarm switch and used for alarming and reminding after the alarm switch is closed. The stator current monitoring and alarming system can find out stator current abnormity in time so as to remove the fault of the synchronous motor as soon as possible, reduce equipment loss and guarantee production safety.
Description
Technical Field
The application relates to the technical field of power equipment, in particular to a stator current monitoring and alarming system of a synchronous motor.
Background
Usually, a magnetic separation workshop of a concentrating mill is provided with a plurality of high-voltage synchronous motors, such as a 1300kw synchronous motor and a 400kw synchronous motor, and an LZK-3 type synchronous motor silicon controlled excitation device is matched with the high-voltage synchronous motors. In the prior use process, a plurality of serious dangerous situations occur, specifically, the synchronous motor is heated and smokes to be forcibly replaced, the synchronous motor is heated and generates peculiar smell, and the current changes suddenly; the synchronous motor causes the sudden increase of the stator current due to the step loss, so that the ammeter is fully biased, the relay fails to trip due to failure, and the like. The above dangerous situations are basically caused by the abnormal stator current of the synchronous motor, so how to find the abnormal stator current in time to remove the fault of the synchronous motor as soon as possible, reduce the equipment loss, and ensure the production safety has become a technical problem to be solved by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The application aims at providing a synchronous motor's stator current monitoring alarm system, can in time discover that stator current is unusual so that remove synchronous motor trouble as early as possible, reduce the equipment loss, ensure production safety.
In order to solve the above technical problem, the present application provides a stator current monitoring alarm system of a synchronous motor, including:
an alarm switch;
a current transducer for converting the stator current into a standard current signal;
the processor is connected with the current transmitter and the alarm switch, and closes the alarm switch when the standard current signal meets an alarm condition;
and the alarm is connected with the alarm switch and used for alarming and reminding after the alarm switch is closed.
Optionally, the processor is specifically a paperless recorder.
Optionally, the alarm is specifically an audible and visual alarm.
Optionally, the paperless recorder is a 16-channel color screen paperless recorder.
Optionally, the alarm is connected with each channel of the paperless recorder.
Optionally, the method further includes:
and connecting the alarm, and closing a silencing switch of the alarm when the alarm is disconnected.
Optionally, the method further includes:
and the communication device is connected with the processor and sends an alarm signal.
Optionally, the communication device is specifically a 4G communication device.
The application provides synchronous motor's stator current monitoring alarm system includes: an alarm switch; a current transducer for converting the stator current into a standard current signal; the processor is connected with the current transmitter and the alarm switch, and closes the alarm switch when the standard current signal meets an alarm condition; and the alarm is connected with the alarm switch and used for alarming and reminding after the alarm switch is closed.
Therefore, the stator current monitoring and alarming system of the synchronous motor can convert the stator current by using the current transducer to obtain the corresponding standard current and output the standard current to the processor, and then the processor closes the alarm switch when determining that the standard current meets the alarm condition, so that the alarm can remind the user of the abnormal condition of the stator current, related personnel can timely know the abnormal condition of the stator current, the fault of the synchronous motor can be relieved as soon as possible, the serious danger caused by further worsening of the fault is avoided, the equipment loss is reduced, and the production safety is guaranteed.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the prior art and the embodiments are briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic diagram of a stator current monitoring and warning system of a synchronous motor according to an embodiment of the present application;
fig. 2 is a schematic diagram of a stator current monitoring alarm system of another synchronous motor provided in an embodiment of the present application.
Detailed Description
The core of the application is to provide a synchronous motor's stator current monitoring alarm system, can in time discover that stator current is unusual so that remove synchronous motor trouble as early as possible, reduce the equipment loss, ensure production safety.
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Referring to fig. 1, fig. 1 is a schematic diagram of a stator current monitoring and alarming system of a synchronous motor according to an embodiment of the present disclosure; referring to fig. 1, the stator current monitoring alarm system includes: an alarm switch 10; a current transducer 20 for converting the stator current into a standard current signal; a processor 30 connecting the current transducer 20 and the alarm switch 10, and closing the alarm switch 10 when the standard current signal satisfies the alarm condition; and an alarm 40 connected with the alarm switch 10 and used for alarming and reminding after the alarm switch 10 is closed.
Specifically, the current transducer 20 may be installed in the high voltage switch cabinet, and the input end of the current transducer is connected in series to a loop where a stator current meter of the synchronous motor is located, and the output end of the current transducer is connected to the processor 30, and is responsible for converting the stator current into a standard current signal of 4 to 20mA and outputting the standard current signal to the processor 30 on the basis that the switching power supply provides an electric energy support, so that the processor 30 closes the alarm switch 10 when the standard current signal meets an alarm condition. The switching power supply may be a 24V dc power supply, and the switching power supply is connected to 220V ac power and outputs 24V dc power.
The processor 30 may be installed in the control box, and an input end of the processor is connected to the current transducer 20, and an output end of the processor is connected to the alarm switch 10, and is configured to receive the standard current signal output by the current transducer 20, and when it is determined that the received standard current signal meets the alarm condition, control the alarm switch 10 to be turned on, so as to start the alarm 40 connected to the alarm switch 10, and enable the alarm 40 to perform alarm reminding.
The processor 30 may determine whether the standard current signal satisfies the alarm condition by using a conventional technical means in the art, that is, after the processor 30 receives the standard current signal output by the current transducer 20, the standard current signal is further compared with a preset alarm upper limit value, and when the time that the standard current signal continuously exceeds the alarm upper limit value reaches the preset time (to avoid causing false alarm in the case of too high starting current), for example, when the time that the standard current signal continuously exceeds the alarm upper limit value reaches 15s, the standard current signal satisfies the alarm condition. Otherwise, the alarm condition is not satisfied.
In addition, the specific type of the processor 30 is not limited in this application, and may be set differently according to actual needs.
In one specific embodiment, the processor 30 is embodied as a paperless recorder.
Specifically, the paperless recorder has the advantages of large display information amount, simple operation, built-in large-capacity FLASH FLASH memory chip, capability of circularly storing historical data, capability of being provided with a standard USB interface, capability of quickly transferring the historical data in the memory of the paperless recorder through a U disk, and multiple operation, display pictures and configuration interfaces. Therefore, on one hand, the paperless recorder can be used for judging whether the received standard current signal meets the alarm condition, namely judging whether the stator current of the synchronous motor is abnormal, and when the standard power and the signal meet the alarm condition, the paperless recorder can start the alarm 40 to give an alarm. On the other hand, a large amount of historical data can be stored in the memory of the paperless recorder, so that related personnel can know the running condition of the synchronous motor by reading the historical data, and the paperless recorder can display current signals and the like by means of the display picture of the paperless recorder, so that the related personnel can conveniently check the current signals.
In order to prevent the synchronous motor from being overloaded and heated, only the alarm upper limit of the stator current of the synchronous motor needs to be concerned, so that the alarm functions of the lower limit, the lower limit and the upper limit can be turned off when the channel of the paperless recorder is configured, and only the alarm function of the upper limit is turned on. In addition, after all the parameters are set, the paperless recorder can be encrypted, so that the influence on the normal operation of the stator current monitoring and alarming system due to the misoperation of irrelevant personnel is prevented.
Further, in a specific embodiment, the paperless recorder is specifically a 16-channel color screen paperless recorder.
Specifically, the present embodiment provides a specific type of paperless recorder, i.e. a 16-channel color-screen paperless recorder, so as to implement the above-mentioned operations by using the 16-channel color-screen paperless recorder.
It is understood that the type of paperless recorder provided in the present application is only an example provided in the present application, and is not limited thereto, and those skilled in the art can also set other types of paperless recorders according to the actual situation, such as 4-channel paperless recorder, 8-channel paperless recorder, etc.
The alarm 40 can be installed on the top of the control box and connected to the alarm switch 10, when the alarm switch 10 is off, the alarm 40 does not work, and after the processor 30 closes the alarm switch 10, the alarm 40 is started to alarm.
In a specific embodiment, the alarm 40 is a sound and light alarm 40. Therefore, when the alarm switch 10 is closed, the audible and visual alarm 40 can perform both audible and visual alarm.
In addition, in one embodiment, the alarm 40 is connected to each channel of the paperless recorder.
Specifically, in order to prevent the shielding of other alarm events in the back when an alarm event is processed, so as to ensure that the alarm event can be effectively warned in time, in this embodiment, the alarm 40 is connected to each channel of the paperless recorder, that is, one alarm 40 is common to each channel of the paperless recorder, and the paperless recorder can start the alarm 40 to warn by controlling the alarm switch 10 to be closed through any channel.
Further, on the basis of the above embodiment, as a specific implementation manner, the stator current monitoring alarm system may further include a connection alarm 40, and a noise reduction switch 50 for turning off the alarm 40 when the connection alarm is turned off.
Specifically, referring to fig. 2, in order to reduce noise while realizing alarm reminding, in this embodiment, the stator current monitoring alarm system is further provided with a silencing switch 50, the silencing switch 50 is connected to the alarm 40, and when the silencing switch 50 is closed, the alarm 40 can normally perform alarm reminding operation. When the silencing switch 50 is turned off, the alarm 40 turns off the sound alarm function, and at this time, even if the alarm switch 10 is turned on, the alarm 40 does not perform sound alarm reminding any more, but only performs flashing alarm reminding. Therefore, after the alarm 40 gives an alarm to remind a person of abnormality of the stator current, the person can turn off the silencing switch 50, so that the alarm 40 stops sound alarm reminding, and the purpose of reducing noise is achieved.
Further, on the basis of the above embodiment, as a specific implementation manner, the stator current monitoring alarm system further includes a communication device connected to the processor 30 and configured to send an alarm signal.
Specifically, in order to avoid that the alarm reminder of the alarm 40 cannot be received in time at the first time due to the fact that the relevant person is far away from the alarm 40, in this embodiment, the stator current monitoring alarm system is further provided with a communication device, the communication device is connected with the processor 30, when the standard current signal meets the alarm condition, the processor 30 can close the alarm switch 10 to start the alarm 40 to alarm and remind, and the processor 30 can also send an alarm signal through the communication device, for example, send the alarm signal to terminals such as mobile phones of the relevant person, and therefore the relevant person can receive the alarm reminder in time.
In a specific embodiment, the communication device is specifically a 4G communication device. Of course, other communication devices, such as WIFI communication devices, LORA communication devices, etc., may also be used.
In summary, the stator current monitoring and alarming system of the synchronous motor provided by the application comprises an alarm switch; a current transducer for converting the stator current into a standard current signal; a processor connected with the current transducer and the alarm switch, and closing the alarm switch when the standard current signal meets the alarm condition; and the alarm is connected with the alarm switch and used for alarming and reminding after the alarm switch is closed. According to the stator current monitoring and alarming system, the current transducer can be used for converting the secondary current to obtain the corresponding standard current, the standard current is output to the processor, the alarm switch is closed when the processor determines that the standard current meets the alarm condition, the alarm is used for reminding, and therefore related personnel can timely know the abnormal condition of the stator current, the fault of the synchronous motor can be relieved as soon as possible, the serious danger caused by further deterioration of the fault is avoided, the equipment loss is reduced, and the production safety is guaranteed.
Because the situation is complicated and cannot be illustrated by a list, those skilled in the art can appreciate that there can be many examples in combination with the actual situation under the basic principle of the embodiments provided in the present application and that it is within the scope of the present application without sufficient inventive effort.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The stator current monitoring and alarming system of the synchronous motor provided by the application is described in detail above. The principles and embodiments of the present application are explained herein using specific examples, which are provided only to help understand the method and the core idea of the present application. It should be noted that, for those skilled in the art, it is possible to make several improvements and modifications to the present application without departing from the principle of the present application, and such improvements and modifications also fall within the scope of the claims of the present application.
It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Claims (8)
1. A stator current monitoring alarm system for a synchronous motor, comprising:
an alarm switch;
a current transducer for converting the stator current into a standard current signal;
the processor is connected with the current transmitter and the alarm switch, and closes the alarm switch when the standard current signal meets an alarm condition;
and the alarm is connected with the alarm switch and used for alarming and reminding after the alarm switch is closed.
2. Stator current monitoring alarm system according to claim 1, characterized in that the processor is in particular a paperless recorder.
3. Stator current monitoring alarm system according to claim 2, characterized in that the alarm is in particular a sound and light alarm.
4. The stator current monitoring alarm system of claim 3, wherein the paperless recorder is a 16-channel color screen paperless recorder.
5. The stator current monitoring alarm system according to claim 4, wherein the alarm is connected to each channel of the paperless recorder.
6. The stator current monitoring alarm system of claim 5, further comprising:
and connecting the alarm, and closing a silencing switch of the alarm when the alarm is disconnected.
7. The stator current monitoring alarm system of claim 6, further comprising:
and the communication device is connected with the processor and sends an alarm signal.
8. Stator current monitoring alarm system according to claim 7, characterized in that the communication device is in particular a 4G communication device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921684554.2U CN210324524U (en) | 2019-10-09 | 2019-10-09 | Stator current monitoring and alarming system of synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921684554.2U CN210324524U (en) | 2019-10-09 | 2019-10-09 | Stator current monitoring and alarming system of synchronous motor |
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| Publication Number | Publication Date |
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| CN210324524U true CN210324524U (en) | 2020-04-14 |
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| CN201921684554.2U Active CN210324524U (en) | 2019-10-09 | 2019-10-09 | Stator current monitoring and alarming system of synchronous motor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842516A (en) * | 2020-07-13 | 2020-10-30 | 重庆龙煜精密铜管有限公司 | Current monitoring system based on high-precision copper pipe drawing high-speed motor |
-
2019
- 2019-10-09 CN CN201921684554.2U patent/CN210324524U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111842516A (en) * | 2020-07-13 | 2020-10-30 | 重庆龙煜精密铜管有限公司 | Current monitoring system based on high-precision copper pipe drawing high-speed motor |
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