CN102751701A - Electric motor current interference prevention method - Google Patents
Electric motor current interference prevention method Download PDFInfo
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- CN102751701A CN102751701A CN2011101003836A CN201110100383A CN102751701A CN 102751701 A CN102751701 A CN 102751701A CN 2011101003836 A CN2011101003836 A CN 2011101003836A CN 201110100383 A CN201110100383 A CN 201110100383A CN 102751701 A CN102751701 A CN 102751701A
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Abstract
The invention provides an electric motor current interference prevention method which includes the following steps that: 1, parameters are set; 2, an electric motor stops running and a timer starts to time when the detected system voltage of the electric motor is smaller than the fixed value of low interfering voltage; 3, if the system voltage of the electric motor recovers to be bigger than the fixed value of recovered voltage and the timing time of the timer is smaller than T1, the electric motor restores to work; if the system voltage of the electric motor recovers to be bigger than the fixed value of recovered voltage and the timing time of the timer is bigger than T1 and smaller than T2, the electric motor restores to work after the time of T3;and if the system voltage of the electric motor recovers to be bigger than the fixed value of recovered voltage and the timing time of the timer is bigger than T2, the electric motor is prohibited from restoring to work. With the electric motor current interference prevention method, when a contactor of the electric motor is disconnected caused by short-term power failure or voltage fluctuation of the electric motor, the electric motor can automatically start immediately or start automatically at delayed time according to the duration of the current interference time.
Description
Technical field
The present invention relates to a kind of anti-rolling method for electrically, relate in particular to a kind of anti-rolling method for electrically of motor.
Background technology
In the commercial production; Usually, " rolling " (because thunderbolt, short circuit or other reasons cause the phenomenon common saying of fluctuation of electrical network short time voltage or short supply interruption to claim " rolling ") shut down because of causing many important low voltage motors; And then cause continuous flow procedure disorderly, bring about great losses to enterprise.
Under the frequent occasion of low-voltage power system voltage fluctuation, motor causes contactor to break off in dead electricity or voltage fluctuation in short-term, and device can be realized the self-starting immediately or the time-delay self-starting of motor according to judging the rolling length of electricity time.
Summary of the invention
Main purpose of the present invention is to provide a kind of anti-rolling method for electrically of motor, makes motor cause contactor to break off in dead electricity or voltage fluctuation in short-term, can realize the self-starting immediately or the time-delay self-starting of motor according to judging the rolling length of electricity time.
In order to achieve the above object, the invention provides a kind of anti-rolling method for electrically of motor, may further comprise the steps:
Step 1: setting voltage recover definite value, the electric low pressure definite value of rolling, motor allow from recovery time definite value T1, motor allow to restart time definite value T2 and shake electric self-starting time-delay definite value T3;
Step 2: when the system voltage that detects motor shook electric low pressure definite value less than this, motor was out of service, and timer also picks up counting, the voltage that the system voltage of this motor provides for the operation to motor;
Step 3: recover definite value when above if electric motor system voltage returns to this voltage, from definite value T1 recovery time, then motor resumes operation the timing time of this timer less than this motor permission;
If returning to this voltage, electric motor system voltage recovers definite value when above; The timing time of this timer allows from definite value T1 and allow to restart time definite value T2 less than this motor recovery time greater than this motor, and then motor resumes operation after this shakes electric self-starting time-delay definite value T3;
Recover definite value when above if electric motor system voltage returns to this voltage, the timing time of this timer allows to restart time definite value T2 greater than this motor, forbids that then motor resumes operation.
During enforcement, further comprising the steps of in step 3 back:
If when this timing time during less than 1 second; If motor resumes operation; The system voltage of motor again shakes electric low pressure definite value less than this subsequently; And in the time that has after this crossed less than T1, the system voltage of motor returns to this voltage again and recovers more than the definite value, and then motor resumes operation after this shakes electric self-starting time-delay definite value T3.
During enforcement, further comprising the steps of in step 3 back:
If when this timing time during less than 1 second, motor resumes operation for twice, then forbid that motor resumes operation in the electric locking time T 4 shaking.
During enforcement, further comprising the steps of in step 3 back:
After 1 second after motor resumes operation first, in rolling electric locking time T 4, forbid that motor resumes operation.
Compared with prior art, the anti-rolling method for electrically of motor of the present invention makes motor cause contactor to break off in dead electricity or voltage fluctuation in short-term, can realize the self-starting immediately or the time-delay self-starting of motor according to judging the rolling length of electricity time.
Description of drawings
Fig. 1 is the logic diagram of the present invention when first the rolling electricity taking place;
The logic diagram of Fig. 2 to be the present invention take place in 1 second of voltage collapse takes place first once more rolling electricity.
Embodiment
In an embodiment of the present invention, electric power system is connected in motor through contactor, moves required voltage, the i.e. system voltage of motor to provide to motor.
The invention provides a kind of anti-rolling method for electrically of motor, may further comprise the steps:
Step 11: setting voltage recover definite value, the electric low pressure definite value of rolling, motor allow from recovery time definite value T1, motor allow to restart time definite value T2 and shake electric self-starting time-delay definite value T3;
Step 12: when the system voltage that detects motor shook electric low pressure definite value less than this, motor was out of service, and timer also picks up counting, the voltage that the system voltage of this motor provides for the operation to motor;
Step 13: recover the time interval more than the definite value according to return to voltage from the motor system voltage to motor out of service, judge whether to make that motor resumes operation, and make after through how long that motor resumes operation that practical implementation is following:
Recover definite value when above if electric motor system voltage returns to this voltage, from definite value T1 recovery time, then motor resumes operation the timing time of this timer less than this motor permission;
If returning to this voltage, electric motor system voltage recovers definite value when above; The timing time of this timer allows from definite value T1 and allow to restart time definite value T2 less than this motor recovery time greater than this motor, and then motor resumes operation after this shakes electric self-starting time-delay definite value T3;
Recover definite value when above if electric motor system voltage returns to this voltage, the timing time of this timer allows to restart time definite value T2 greater than this motor, forbids that then motor resumes operation.
During enforcement; Further comprising the steps of in step 13 back: if when this timing time during less than 1 second; If motor resumes operation, the system voltage of motor shakes electric low pressure definite value less than this again subsequently, and in the time that has after this crossed less than T1; The system voltage of motor returns to this voltage again and recovers more than the definite value, and then motor resumes operation after this shakes electric self-starting time-delay definite value T3.
If when this timing time during less than 1 second, motor resumes operation for twice, then forbid that motor resumes operation in the electric locking time T 4 shaking.
After 1 second after motor resumes operation first, in rolling electric locking time T 4, forbid that motor resumes operation.
At first setting voltage recover definite value, the electric low pressure definite value of rolling, motor allow from recovery time definite value T1, motor allow to restart time definite value T2 and shake electric self-starting time-delay definite value T3; Motor inserts A, B, C three-phase voltage; Adjustment voltage is rated value, and the self-starting function of actuating motor;
As shown in Figure 1, in the present invention, the step when the rolling electricity takes place first is following:
Step 11: the system voltage of bust motor is lower than the electric low pressure definite value of rolling, and contactor is by closing the position to dividing the position, and the motor outage is out of service, and starts timer, the time T of record timer;
Step 12: return to voltage and recover definite value when above when detecting this system voltage, whether the time T of judging timer less than T1, if then go to step 13, if otherwise go to step 14;
Step 13: dynamotor closes a floodgate and orders immediately, and the contactor that closes resumes operation motor, finishes;
Step 14: whether judge T greater than T2, if then go to step 15, if otherwise go to step 16;
Step 15: forbid that motor resumes operation, finish;
Step 16: motor resumes operation after this shakes electric self-starting time-delay definite value T3.
In when, first voltage collapse taking place, if T less than T1 during voltage return to voltage and recover more than the definite value, the then dynamotor order of closing a floodgate immediately, the contactor that closes resumes operation motor;
If returning to voltage greater than T1 less than voltage during the T2, recovers more than the definite value T, then dynamotor combined floodgate order behind the electric self-starting time-delay of predefined rolling definite value T3, and the contactor that closes resumes operation motor;
If voltage did not recover yet when T equaled T2, then the self-starting function of motor withdraws from automatically.
As shown in Figure 2, the logic that the rolling electricity takes place to take place once more in 1 second of voltage collapse first in the present invention is following:
If in 1 second of voltage generation rapid drawdown; Voltage collapse for the second time takes place after the motor self-starting, and the rapid drawdown time-delay recovers again less than T1 voltage, then through the electric self-starting time-delay of the predefined rolling definite value T3 dynamotor order of closing a floodgate once more; The contactor that closes resumes operation motor;
If the electric self-starting of twice rolling took place in one second, or shaking electric self-starting first after successful 1 second, the electric locking time T 4 of then shaking starts, and in rolling electric locking time T 4, does not allow dynamotor to close a floodgate again and orders.
More than explanation is just illustrative for the purpose of the present invention; And nonrestrictive, those of ordinary skills understand, under the situation of spirit that does not break away from following accompanying claims and limited and scope; Can make many modifications, variation or equivalence, but all will fall in protection scope of the present invention.
Claims (4)
1. the anti-rolling method for electrically of a motor is characterized in that, may further comprise the steps:
Step 1: setting voltage recover definite value, the electric low pressure definite value of rolling, motor allow from recovery time definite value T1, motor allow to restart time definite value T2 and shake electric self-starting time-delay definite value T3;
Step 2: when the system voltage that detects motor shook electric low pressure definite value less than this, motor was out of service, and timer also picks up counting, the voltage that the system voltage of this motor provides for the operation to motor;
Step 3: recover definite value when above if electric motor system voltage returns to this voltage, from definite value T1 recovery time, then motor resumes operation the timing time of this timer less than this motor permission;
If returning to this voltage, electric motor system voltage recovers definite value when above; The timing time of this timer allows from definite value T1 and allow to restart time definite value T2 less than this motor recovery time greater than this motor, and then motor resumes operation after this shakes electric self-starting time-delay definite value T3;
Recover definite value when above if electric motor system voltage returns to this voltage, the timing time of this timer allows to restart time definite value T2 greater than this motor, forbids that then motor resumes operation.
2. the anti-rolling method for electrically of motor as claimed in claim 1 is characterized in that, and is further comprising the steps of in step 3 back:
If when this timing time during less than 1 second; If motor resumes operation; The system voltage of motor again shakes electric low pressure definite value less than this subsequently; And in the time that has after this crossed less than T1, the system voltage of motor returns to this voltage again and recovers more than the definite value, and then motor resumes operation after this shakes electric self-starting time-delay definite value T3.
3. the anti-rolling method for electrically of motor as claimed in claim 1 is characterized in that, and is further comprising the steps of in step 3 back:
If when this timing time during less than 1 second, motor resumes operation for twice, then forbid that motor resumes operation in the electric locking time T 4 shaking.
4. the anti-rolling method for electrically of motor as claimed in claim 1 is characterized in that, and is further comprising the steps of in step 3 back:
After 1 second after motor resumes operation first, in rolling electric locking time T 4, forbid that motor resumes operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101003836A CN102751701A (en) | 2011-04-20 | 2011-04-20 | Electric motor current interference prevention method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011101003836A CN102751701A (en) | 2011-04-20 | 2011-04-20 | Electric motor current interference prevention method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102751701A true CN102751701A (en) | 2012-10-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011101003836A Pending CN102751701A (en) | 2011-04-20 | 2011-04-20 | Electric motor current interference prevention method |
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| Country | Link |
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| CN (1) | CN102751701A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193554A (en) * | 2018-11-22 | 2019-01-11 | 中煤鄂尔多斯能源化工有限公司 | A kind of current interference prevention method and device |
| CN110932603A (en) * | 2019-11-22 | 2020-03-27 | 北京北斗银河科技有限公司 | Control method and control device for anti-interference restarting of motor |
| CN110932604A (en) * | 2019-11-22 | 2020-03-27 | 北京北斗银河科技有限公司 | Method and device for controlling anti-electric-dazzling restart of beam type oil production machine |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040027747A1 (en) * | 2000-07-18 | 2004-02-12 | Sungkyunkwan University | Adaptive reclosing method using variable dead time control in power transmission line |
| CN101944871A (en) * | 2009-07-09 | 2011-01-12 | 南京南瑞继保电气有限公司 | Method for restarting electromotor after power failure |
-
2011
- 2011-04-20 CN CN2011101003836A patent/CN102751701A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040027747A1 (en) * | 2000-07-18 | 2004-02-12 | Sungkyunkwan University | Adaptive reclosing method using variable dead time control in power transmission line |
| CN101944871A (en) * | 2009-07-09 | 2011-01-12 | 南京南瑞继保电气有限公司 | Method for restarting electromotor after power failure |
Non-Patent Citations (1)
| Title |
|---|
| 潘飞: "电动机再起动技术", 《电工技术杂志》 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109193554A (en) * | 2018-11-22 | 2019-01-11 | 中煤鄂尔多斯能源化工有限公司 | A kind of current interference prevention method and device |
| CN110932603A (en) * | 2019-11-22 | 2020-03-27 | 北京北斗银河科技有限公司 | Control method and control device for anti-interference restarting of motor |
| CN110932604A (en) * | 2019-11-22 | 2020-03-27 | 北京北斗银河科技有限公司 | Method and device for controlling anti-electric-dazzling restart of beam type oil production machine |
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| C06 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C53 | Correction of patent of invention or patent application | ||
| CB03 | Change of inventor or designer information |
Inventor after: Wang Jingren Inventor after: Ou Yangqiang Inventor after: Zhao Changbing Inventor after: Gao Longji Inventor after: Zhang Jian Inventor after: Li Huiyong Inventor before: Wang Jingren Inventor before: Ou Yangqiang Inventor before: Zhao Changbing Inventor before: Gao Longji |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: WANG JINGREN OU YANGQIANG ZHAO CHANGBING GAO LONGJI TO: WANG JINGREN OU YANGQIANG ZHAO CHANGBING GAO LONGJI ZHANG JIAN LI HUIYONG |
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20121024 |