CN204928656U - High -voltage motor variable frequency control device based on LTE -TDD - Google Patents
High -voltage motor variable frequency control device based on LTE -TDD Download PDFInfo
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- CN204928656U CN204928656U CN201520531543.6U CN201520531543U CN204928656U CN 204928656 U CN204928656 U CN 204928656U CN 201520531543 U CN201520531543 U CN 201520531543U CN 204928656 U CN204928656 U CN 204928656U
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Abstract
The utility model discloses a high -voltage motor variable frequency control device based on LTE -TDD belongs to control technical field. This high -voltage motor variable frequency control device based on LTE -TDD includes: LTE -TDD communication module, singlechip, measured module, signals regulating module, in step condition monitoring module and signal trigger module, LTE -TDD communication module is connected with the singlechip, the singlechip with measured module connects, measured module's input links to each other with frequency conversion, power network signal respectively, measured module's output respectively with the input of signals regulating module with in step condition monitoring module's input links to each other, the output of signals regulating module with frequency conversion links to each other, in step condition monitoring module's output with the input of signal trigger module links to each other, the output of signal trigger module passes through the circuit breaker and links to each other with the high -voltage motor. This high -voltage motor variable frequency control device based on LTE -TDD can reduce the impact to the electric wire netting, the extension motor life -span.
Description
Technical field
The utility model relates to a kind of high-voltage motor frequency conversion control device based on LTE-TDD.
Background technology
In enterprise, often need to use energy consumption equipment, in design selection process, be foundation with maximum duty usually, and consider certain allowance.This just causes in practical application, and the flow of energy consumption equipment all needs to regulate, and traditional Flow-rate adjustment mode is throttling, but the problem such as ubiquity reaction is slow, degree of regulation is low, energy consumption is large.Along with the development of converter technique, because of advantages such as its adjusting function is excellent, good energy-conserving effects, obtain in practice applying more and more widely.
Along with expanding economy, the Large-Scale Equipment in enterprise also gets more and more, and the application of large-size machine is also more and more extensive, and the nucleus equipment of the general Dou Shi enterprise of equipment that large-size machine drives, once shut down, will directly affect the normal production of enterprise.Therefore, how to ensure the work of main equipment continous-stable, and saves energy can just become current problem demanding prompt solution.Wherein, the starting problem most important thing especially of main equipment how is properly settled.
The harm adopting full voltage starting to cause for main equipment (such as motor) is mainly manifested in two aspects:
1, on the impact of electrical network
When total head directly starts, starting current can reach the 4-7 of rated current doubly usually, is almost similar to the impact of three-phase shortcircuit to electrical network; not only affect the stability of electrical network; cause the sharply decline of line voltage, and, other power consumption equipment of same electrical network may because of electrical network low voltage chaser.
2, on the impact of motor
When total head directly starts, it is aging that big current can accelerate electrical machine insulation, and reduce useful life, the switching overvoltage of generation also can cause great injury to the insulation of motor.Large detent torque is added in suddenly in static plant equipment, the wearing and tearing of meeting accelerating gear, shaft coupling.
Utility model content
The utility model embodiment provides a kind of high-voltage motor frequency conversion control device based on LTE-TDD, can reduce the impact to electrical network, effectively extends the life-span of motor.
The technical scheme that the utility model embodiment provides is as follows:
Based on a high-voltage motor frequency conversion control device of LTE-TDD, comprising: LTE-TDD communication module, single-chip microcomputer, measurement module, signal adjusting module, synchronous condition monitoring modular and signal trigger module, described LTE-TDD communication module is connected with single-chip microcomputer, described single-chip microcomputer is connected with described measurement module, the input of described measurement module respectively with frequency variation signal, power network signal is connected, the output of described measurement module is connected with the input of described synchronous condition monitoring modular with the input of described signal adjusting module respectively, the output of described signal adjusting module is connected with described frequency variation signal, the output of described synchronous condition monitoring modular is connected with the input of described signal trigger module, the output of described signal trigger module is connected with high-voltage motor by circuit breaker.
Preferably, also comprise: the first relay and the second relay, the control end of described first relay is connected with the output of described synchronous condition monitoring modular, first output of described first relay is connected with the control end of described second relay, second output of described first relay is connected with the input of described signal trigger module, and the output of described second relay is all connected with described circuit breaker with the output of described signal trigger module.
Preferably, described measurement module comprises:
First signal sampling unit, for gathering the magnitude of voltage of described frequency variation signal, frequency values and phase angle;
Secondary signal sampling unit, for gathering the magnitude of voltage of described power network signal, frequency values and phase angle;
Computing unit, for calculating the voltage difference of described frequency variation signal and described power network signal, difference on the frequency and phase difference respectively.
Preferably, described signal adjusting module comprises:
Adjustment unit, for the voltage difference according to described frequency variation signal and described power network signal, difference on the frequency and phase difference to described frequency variation signal adjustment make described frequency variation signal and described power network signal synchronous;
Feedback unit, for feeding back to the input of described measurement module by the frequency variation signal after described adjustment unit adjustment.
Preferably, described synchronous condition monitoring modular comprises:
First judging unit, for judging whether described voltage difference is less than predeterminated voltage difference;
Second judging unit, for judging whether described difference on the frequency is less than predeterminated frequency difference;
3rd judging unit, for judging whether described phase difference is less than preset phase difference;
Control unit, for exporting synchronism switching command signal when the judged result of described first judging unit, described second judging unit and described 3rd judging unit is all for being.
Preferably, described signal trigger module comprises:
Signal receiving unit, for receiving the synchronism switching command signal that described first relay sends;
Signal transmitting unit, sends switching signal to described circuit breaker for receive described synchronism switching command signal at described signal receiving unit after.
The high-voltage motor frequency conversion control device based on LTE-TDD that the utility model embodiment provides, by the cooperation of LTE-TDD communication module, single-chip microcomputer, measurement module, signal adjusting module, synchronous condition monitoring modular and signal trigger module, effectively adjustment can be carried out to make frequency variation signal synchronous with power network signal to frequency variation signal, thus in breaker closing process, the impact to electrical network can be effectively reduced, extend the useful life of motor.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment below, apparently, the accompanying drawing that the following describes is only some embodiments recorded in the utility model, for those of ordinary skill in the art, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of high-voltage motor frequency conversion control device based on LTE-TDD that the utility model embodiment provides;
Fig. 2 is the structural representation of the second of providing of the utility model embodiment based on the high-voltage motor frequency conversion control device of LTE-TDD.
Embodiment
In order to the scheme making those skilled in the art person understand the utility model embodiment better, below in conjunction with drawings and embodiments, the utility model embodiment is described in further detail.
As shown in Figure 1, for the structural representation of a kind of high-voltage motor frequency conversion control device based on LTE-TDD that the utility model embodiment provides, comprising: LTE-TDD communication module 110, single-chip microcomputer 120, measurement module 101, signal adjusting module 102, synchronous condition monitoring modular 103 and signal trigger module 106; Wherein, LTE-TDD communication module 110 is connected with single-chip microcomputer 120, single-chip microcomputer 120 is connected with measurement module 101, LTE-TDD communication module 110 can carry out data interaction with remote control center by LTE-TDD network, and transfer of data to single-chip microcomputer 120, measurement module 101 data transfer to single-chip microcomputer 120, and can pass through LTE-TDD module transfer to remote control center; The input of measurement module 101 is connected with frequency variation signal, power network signal respectively, the output of measurement module 101 is connected with the input of synchronous condition monitoring modular 103 with the input of signal adjusting module 102 respectively, the output of signal adjusting module 102 is connected with frequency variation signal, the output of synchronous condition monitoring modular 103 is connected with the input of signal trigger module 106, and the output of signal trigger module 106 is connected with high-voltage motor 108 by circuit breaker 107.Should based on the high-voltage motor frequency conversion control device of LTE-TDD, by the cooperation of measurement module 101, signal adjusting module 102, synchronous condition monitoring modular 103 and signal trigger module 106, effectively adjustment can be carried out to make frequency variation signal synchronous with power network signal to frequency variation signal, thus in breaker closing process, the impact to electrical network can be effectively reduced, extend the useful life of the equipment such as motor.
Due to monitor at synchronous condition monitoring modular 103 synchronous condition meet after, all likely signal to signal trigger module 106 at any time, consider that the scanning of signal trigger module 106 is periodic, unfixed from receiving synchronizing signal to the time sent synchronism switching order, this can affect the effect of synchronism switching, in circuit breaker 107 making process, frequency variation signal and power network signal will there will be certain deviation, thus produce certain impact to electrical network.In order to solve this problem, as shown in Figure 2, for another structural representation based on the high-voltage motor frequency conversion control device of LTE-TDD that the utility model embodiment provides, the difference of the high-voltage motor frequency conversion control device based on LTE-TDD shown in itself and Fig. 1 is, also comprise: the first relay 104 and the second relay 105, wherein, the control end of the first relay 104 is connected with the output of synchronous condition monitoring modular 103, first output of the first relay 104 is connected with the control end of the second relay 105, second output of the first relay 104 is connected with the input of signal trigger module 106, the output of the second relay 105 is all connected with circuit breaker 107 with the output of signal trigger module 106.Wherein, second relay 105 is time-delay relay, just adhesive is carried out after the first relay 104 adhesive Preset Time, and this Preset Time is greater than the signal scan cycle of signal trigger module 106, after ensureing that signal trigger module 106 sends switching signal, the second relay 105 just carries out adhesive, thus make from synchronous condition monitoring modular 103 to the second relay 105 export between time be fixing, thus ensure the effect of synchronism switching, effectively reduce the percussion to electrical network.
In an embodiment of the present utility model, above-mentioned measurement module 101 specifically can comprise:
First signal sampling unit, for gathering the magnitude of voltage of frequency variation signal, frequency values and phase angle;
Secondary signal sampling unit, for gathering the magnitude of voltage of power network signal, frequency values and phase angle;
Computing unit, for calculating the voltage difference of frequency variation signal and power network signal, difference on the frequency and phase difference respectively.
In another one embodiment of the present utility model, above-mentioned signal adjusting module 102 specifically can comprise:
Adjustment unit, for the voltage difference according to frequency variation signal and power network signal, difference on the frequency and phase difference to frequency variation signal adjustment make frequency variation signal and power network signal synchronous;
Feedback unit, for feeding back to the input of measurement module 101 by the frequency variation signal after adjustment unit adjustment.
In another embodiment of the present utility model, above-mentioned synchronous condition monitoring modular 103 specifically can comprise:
First judging unit, for judging whether voltage difference is less than predeterminated voltage difference;
Whether the second judging unit, be less than predeterminated frequency difference for determination frequency difference;
3rd judging unit, for judging whether phase difference is less than preset phase difference;
Control unit, for exporting synchronism switching command signal when the judged result of the first judging unit, the second judging unit and the 3rd judging unit is all for being.
In another embodiment of the present utility model, above-mentioned signal trigger module 106 specifically can comprise:
Signal receiving unit, for receiving the synchronism switching command signal that the first relay 104 sends;
Signal transmitting unit, sends switching signal to circuit breaker 107 after receiving synchronism switching command signal at signal receiving unit.
For the ease of understanding the utility model, briefly introduce below in conjunction with the operation principle of accompanying drawing 2 to the high-voltage motor frequency conversion control device based on LTE-TDD: the first relay 104 carries out adhesive after receiving the synchronism switching command signal of synchronous condition monitoring modular 103 transmission, and to the second relay 105 transmission lag adhesive control signal, send synchronism switching command signal to signal trigger module 106 simultaneously.Because the second relay 105 is time-delay relay, receive first relay 104 send delay adhesive control signal reach Preset Time after, just carry out adhesive, wherein, signal trigger module 106 is after receiving synchronism switching command signal, just start to scan, and to circuit breaker 107 switching signals, adhesive control signal is postponed in the Preset Time of actual adhesive from receiving at the second relay 105, signal trigger module 106 has completed the transmission of switching signal, therefore, circuit breaker 107 is receiving the switching signal of signal trigger module 106 transmission, and just can close a floodgate after receiving described second relay pickup signal, thus guarantee is fixing from the time between the output of synchronous condition monitoring modular 103 to the second relay 105, the effect of effective guarantee synchronism switching, reduce the impact to electrical network.
The high-voltage motor frequency conversion control device based on LTE-TDD that the utility model embodiment provides, by the cooperation of LTE-TDD communication module, single-chip microcomputer, measurement module, signal adjusting module, synchronous condition monitoring modular and signal trigger module, effectively adjustment can be carried out to make frequency variation signal synchronous with power network signal to frequency variation signal, thus in breaker closing process, the impact to electrical network can be effectively reduced, postpone the useful life of motor.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection range of the present utility model.
Claims (6)
1. based on a high-voltage motor frequency conversion control device of LTE-TDD, it is characterized in that, comprising: LTE-TDD communication module, single-chip microcomputer, measurement module, signal adjusting module, synchronous condition monitoring modular and signal trigger module, described LTE-TDD communication module is connected with single-chip microcomputer, described single-chip microcomputer is connected with described measurement module, the input of described measurement module respectively with frequency variation signal, power network signal is connected, the output of described measurement module is connected with the input of described synchronous condition monitoring modular with the input of described signal adjusting module respectively, the output of described signal adjusting module is connected with described frequency variation signal, the output of described synchronous condition monitoring modular is connected with the input of described signal trigger module, the output of described signal trigger module is connected with high-voltage motor by circuit breaker.
2. the high-voltage motor frequency conversion control device based on LTE-TDD according to claim 1, it is characterized in that, also comprise: the first relay and the second relay, the control end of described first relay is connected with the output of described synchronous condition monitoring modular, first output of described first relay is connected with the control end of described second relay, second output of described first relay is connected with the input of described signal trigger module, and the output of described second relay is all connected with described circuit breaker with the output of described signal trigger module.
3. the high-voltage motor frequency conversion control device based on LTE-TDD according to claim 2, it is characterized in that, described measurement module comprises:
First signal sampling unit, for gathering the magnitude of voltage of described frequency variation signal, frequency values and phase angle;
Secondary signal sampling unit, for gathering the magnitude of voltage of described power network signal, frequency values and phase angle;
Computing unit, for calculating the voltage difference of described frequency variation signal and described power network signal, difference on the frequency and phase difference respectively.
4. the high-voltage motor frequency conversion control device based on LTE-TDD according to claim 3, it is characterized in that, described signal adjusting module comprises:
Adjustment unit, for the voltage difference according to described frequency variation signal and described power network signal, difference on the frequency and phase difference to described frequency variation signal adjustment make described frequency variation signal and described power network signal synchronous;
Feedback unit, for feeding back to the input of described measurement module by the frequency variation signal after described adjustment unit adjustment.
5. the high-voltage motor frequency conversion control device based on LTE-TDD according to claim 4, is characterized in that, described synchronous condition monitoring modular comprises:
First judging unit, for judging whether described voltage difference is less than predeterminated voltage difference;
Second judging unit, for judging whether described difference on the frequency is less than predeterminated frequency difference;
3rd judging unit, for judging whether described phase difference is less than preset phase difference;
Control unit, for exporting synchronism switching command signal when the judged result of described first judging unit, described second judging unit and described 3rd judging unit is all for being.
6. the high-voltage motor frequency conversion control device based on LTE-TDD according to claim 5, is characterized in that, described signal trigger module comprises:
Signal receiving unit, for receiving the synchronism switching command signal that described first relay sends;
Signal transmitting unit, sends switching signal to described circuit breaker for receive described synchronism switching command signal at described signal receiving unit after.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983932A (en) * | 2021-02-22 | 2021-06-18 | 力源液压（苏州）有限公司 | Hydraulic test bed equipment and data acquisition system, measurement and control system and measurement and control method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983932A (en) * | 2021-02-22 | 2021-06-18 | 力源液压（苏州）有限公司 | Hydraulic test bed equipment and data acquisition system, measurement and control system and measurement and control method thereof |
| CN112983932B (en) * | 2021-02-22 | 2023-12-19 | 力源液压（苏州）有限公司 | Hydraulic test bed equipment and data acquisition system, measurement and control system and measurement and control method thereof |
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