CN205749824U - The detection of a kind of three-phase motor circuit and protection system - Google Patents
The detection of a kind of three-phase motor circuit and protection system Download PDFInfo
- Publication number
- CN205749824U CN205749824U CN201620456822.5U CN201620456822U CN205749824U CN 205749824 U CN205749824 U CN 205749824U CN 201620456822 U CN201620456822 U CN 201620456822U CN 205749824 U CN205749824 U CN 205749824U
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Abstract
This utility model provides detection and the protection system of a kind of three-phase motor circuit, including: voltage detection module, current detection module, power detection module, frequency detection module, measure and control module, display module and relay protection circuit, voltage detection module, current detection module, power detection module, frequency detection module detects the voltage of three-phase circuit respectively, electric current, power and frequency information output are to measuring and control module, measure and control module processes and decision circuitry situation, control relay protection circuit disconnect when circuit abnormality and then make three-phase circuit disconnect；Display module with measure and control module two-phase is connected and realizes human-computer interaction.It is strong that it has capacity of resisting disturbance, reaches to monitor in real time, automatically protect the feature of three phase electric machine.
Description
Technical field
This utility model relates to electronic circuit field, is specifically related to detection and the protection system of a kind of three-phase motor circuit.
Background technology
Three phase electric machine is widely used in the power set of various plant equipment owing to having the advantage such as efficient, energy-conservation, performance is good, it is little to vibrate, noise is low, life-span length, reliability are high, easy to maintenance, starting torque is big; but three phase electric machine is easily damaged because of disconnected phase and the situation of overload when operation; therefore mating protection device is wanted to use during three phase electric machine; protector in the market is varied; but most of protector internal circuit configurations are complicated; cause high cost; and relative response speed is slow; can not disconnecting circuit in time, protect three phase electric machine.
China's utility model application number is: CN201220199514 discloses a kind of three-phase voltage sample circuit for controlling protection switch; it include three phase supply circuit, signal deteching circuit, signal amplification circuit and for control switch single-chip microcomputer; increase three-phase voltage defencive function newly; using voltage transformer to detect, the signal sampled is delivered to single-chip microcomputer calculating and is processed after being processed by operational amplifier.If signal is normal, then continued with signal by single-chip microcomputer；If abnormal signal, then sent instruction by single-chip microcomputer to protection actuator, provide protection for load equipment.But the voltage of circuit is only detected by this patent document, there is bigger uncertain and temporal hysteresis quality in poor anti jamming capability, it might therefore and cause misoperation or the shielding failure controlling protection switch, and cause load equipment to damage.
Utility model content
To this end, this utility model uses monitors the power of three phase electric machine, electric current, voltage and frequency simultaneously, and it is provided with control and three-phase motor circuit is detected and protects by protection circuit.
nullFor reaching above-mentioned purpose，The detection of a kind of three-phase motor circuit that this utility model provides and protection system，Including: voltage detection module、Current detection module、Power detection module、Frequency detection module、Measure and control module、Display module and relay protection circuit，The three-phase circuit of three phase electric machine power supply is sequentially ingressed in three phase electric machine powers for it，Phase voltage between any two output extremely measurement and control module in described voltage detection module detection three-phase circuit，Described current detection module is serially connected on three-phase circuit and detects each phase line current respectively and export to measuring and control module，Described power detection module is serially connected on three-phase circuit and detects the power of three-phase circuit and export to measuring and control module，The test side of described frequency detection module is arranged on to be detected the frequency of this circuit and exports to measuring and control module on a wherein phase alignment circuit of three-phase circuit，Described measurement and control module are bi-directionally connected with display module，Described relay protection circuit is serially connected on three-phase circuit，The end that controls of described measurement and control module connects relay protection circuit and then controls the on/off of this three-phase circuit.
A kind of preferred version of the present utility model, described voltage detection module includes three voltage transmitters, and three voltage transmitters detect in three-phase circuit phase voltage between any two respectively and export to measurement and control module.
Another kind of preferred version of the present utility model, described current detection module includes that three current transducers, three current transducers are serially connected on three-phase circuit respectively.
Another kind of preferred version of the present utility model, described power detection module is power transducer.
Another kind of preferred version of the present utility model, described display module is touching display screen.
By the technical solution of the utility model, have the advantages that
Monitoring the power of three phase electric machine, electric current, voltage and frequency simultaneously, and be provided with control protection electric circuit and detect three-phase motor circuit and protect, its circuit every terms of information can carry out man-machine interaction by display module.It is strong that it has capacity of resisting disturbance, reaches to monitor in real time, automatically protect the feature of three phase electric machine.
Accompanying drawing explanation
The three-phase motor circuit schematic diagram that Fig. 1 show in embodiment.
Detailed description of the invention
For further illustrating each embodiment, this utility model is provided with accompanying drawing.These accompanying drawings are a part for this utility model disclosure, and it is mainly in order to illustrate embodiment, and the associated description of description can be coordinated to explain the operation principles of embodiment.Coordinating with reference to these contents, those of ordinary skill in the art will be understood that other possible embodiments and advantage of the present utility model.Assembly in figure is not necessarily to scale, and similar element numbers is conventionally used to indicate similar assembly.
In conjunction with the drawings and specific embodiments, this utility model is further illustrated.
With reference to shown in Fig. 1, the detection of the three-phase motor circuit that the present embodiment provides and protection system, including: three voltage transmitters 2, three current transducers 3, three relay protection circuits 4, one power transducer 5, measure and control module 7 for one, one display module 8 and a frequency measuring block 9, the A phase line of three phase electric machine power supply 1, B phase line, this three-phase circuit of C phase line is sequentially ingressed in three phase electric machine 6 powers for it, each voltage transmitter 2 is connected to detect the phase voltage of these two phase alignment circuits on two phase alignment circuits and export to measuring and control module 7, its three voltage transmitters 2 can detect in three-phase circuit phase voltage between any two.Three current transducers 3 are serially connected in A phase line respectively, B phase line, detect the electric current of each phase alignment circuit on the circuit of C phase line and export to measuring and control module 7, power transducer 5 is serially connected on three-phase circuit and detects the power of three-phase circuit and export to measuring and control module 7, the test side of frequency measuring block 9 is connected to C phase alignment circuit (in other embodiments, A phase line or B phase alignment circuit can also be connected to) above detect its frequency and export to measuring and control module 7, display module 8 is touching display screen, display module 8 is bi-directionally connected with measurement and control module 7, three relay protection circuits 4 are serially connected on three-phase circuit respectively, measure and the end that controls of control module 7 connects relay protection circuit 4 respectively and then controls the on/off of this three-phase circuit.
In the present embodiment, frequency measuring block 9 is device or the instrument in prior art for measuring circuit frequency, is just not described in detail at this.
In the present embodiment, measure and control module 7 is as single-chip microcomputer etc. has process, judges and control chip and the peripheral circuit composition of function in prior art, be that it can not launched to describe at this easily according to its functional realiey by those skilled in the art.
In the present embodiment, AC signal (voltage, electric current, power) in three-phase circuit can be converted into direct current linear signal by voltage transmitter 2, current transducer 3, power transducer 5 respectively, can the most measured identify with control module 7, in other embodiments, it would however also be possible to employ the detection module with same detection function substitutes.
Its operation principle is as follows:
Voltage transmitter 2, current transducer 3, power transducer 5, frequency measuring block 9 detect the voltage of three-phase circuit, electric current, power and frequency respectively and transmit to measuring and in control module 7; measure and control module 7 processes and judges these data; and demonstrated by display module 8; user can also check required monitoring information by display module 8 input; if the circuit information of detection occurs abnormal; then measure and control module 7 controls relay protection circuit 4 and disconnects; and then control the disconnection of this three-phase circuit, protect three phase electric machine 6.
The technical scheme that this utility model provides, monitors the power of three phase electric machine, electric current, voltage and frequency simultaneously, and is provided with control protection electric circuit and detects three-phase motor circuit and protect, and its circuit every terms of information can carry out man-machine interaction by display module.It is strong that it has capacity of resisting disturbance, reaches to monitor in real time, automatically protect the feature of three phase electric machine.
Although specifically showing in conjunction with preferred embodiment and describing this utility model; but those skilled in the art should be understood that; in the spirit and scope of the present utility model limited without departing from appended claims; this utility model can be made a variety of changes in the form and details, be protection domain of the present utility model.
Claims (5)
- null1. a three-phase motor circuit detection and protection system，It is characterized in that，Including: voltage detection module、Current detection module、Power detection module、Frequency detection module、Measure and control module、Display module and relay protection circuit，The three-phase circuit of three phase electric machine power supply is sequentially ingressed in three phase electric machine powers for it，Phase voltage between any two output extremely measurement and control module in described voltage detection module detection three-phase circuit，Described current detection module is serially connected on three-phase circuit and detects each phase line current respectively and export to measuring and control module，Described power detection module is serially connected on three-phase circuit and detects the power of three-phase circuit and export to measuring and control module，The test side of described frequency detection module is arranged on to be detected the frequency of this circuit and exports to measuring and control module on a wherein phase alignment circuit of three-phase circuit，Described measurement and control module are bi-directionally connected with display module，Described relay protection circuit is serially connected on three-phase circuit，The end that controls of described measurement and control module connects relay protection circuit and then controls the on/off of this three-phase circuit.
- The detection of three-phase motor circuit the most according to claim 1 and protection system; it is characterized in that: described voltage detection module includes three voltage transmitters, three voltage transmitters detect in three-phase circuit phase voltage between any two respectively and export to measuring and control module.
- The detection of three-phase motor circuit the most according to claim 1 and protection system, it is characterised in that: described current detection module includes that three current transducers, three current transducers are serially connected on three-phase circuit respectively.
- The detection of three-phase motor circuit the most according to claim 1 and protection system, it is characterised in that: described power detection module is power transducer.
- The detection of three-phase motor circuit the most according to claim 1 and protection system, it is characterised in that: described display module is touching display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620456822.5U CN205749824U (en) | 2016-05-19 | 2016-05-19 | The detection of a kind of three-phase motor circuit and protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620456822.5U CN205749824U (en) | 2016-05-19 | 2016-05-19 | The detection of a kind of three-phase motor circuit and protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205749824U true CN205749824U (en) | 2016-11-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620456822.5U Expired - Fee Related CN205749824U (en) | 2016-05-19 | 2016-05-19 | The detection of a kind of three-phase motor circuit and protection system |
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| CN (1) | CN205749824U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109343386A (en) * | 2018-09-29 | 2019-02-15 | 杭州电子科技大学 | A kind of three phase circuit power monitoring device based on Internet of Things |
| CN112946472A (en) * | 2021-02-06 | 2021-06-11 | 北华航天工业学院 | Dynamic pressure air-floating motor health state assessment device and method |
| CN114137296A (en) * | 2021-11-27 | 2022-03-04 | 台州安耐杰电力设备有限公司 | Three-phase circuit measurement and control diagnostic device |
-
2016
- 2016-05-19 CN CN201620456822.5U patent/CN205749824U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109343386A (en) * | 2018-09-29 | 2019-02-15 | 杭州电子科技大学 | A kind of three phase circuit power monitoring device based on Internet of Things |
| CN109343386B (en) * | 2018-09-29 | 2024-02-09 | 杭州电子科技大学 | Three-phase circuit power monitoring device based on Internet of things |
| CN112946472A (en) * | 2021-02-06 | 2021-06-11 | 北华航天工业学院 | Dynamic pressure air-floating motor health state assessment device and method |
| CN114137296A (en) * | 2021-11-27 | 2022-03-04 | 台州安耐杰电力设备有限公司 | Three-phase circuit measurement and control diagnostic device |
| CN114137296B (en) * | 2021-11-27 | 2024-04-09 | 台州安耐杰电力设备有限公司 | Three-phase circuit measurement and control diagnostic device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20180519 |