CN106391315A - Flashover control method for high-frequency electric source of dust remover - Google Patents
Flashover control method for high-frequency electric source of dust remover Download PDFInfo
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- CN106391315A CN106391315A CN201610771751.2A CN201610771751A CN106391315A CN 106391315 A CN106391315 A CN 106391315A CN 201610771751 A CN201610771751 A CN 201610771751A CN 106391315 A CN106391315 A CN 106391315A
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- Prior art keywords
- voltage
- value
- electric source
- frequency electric
- high frequency
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
- B03C3/34—Constructional details or accessories or operation thereof
- B03C3/66—Applications of electricity supply techniques
- B03C3/68—Control systems therefor
Abstract
The invention relates to a flashover control method for a high-frequency electric source of a dust remover. The flashover control method for the high-frequency electric source of the dust remover includes the following steps that step 101, the secondary voltage and secondary current output from the high-frequency electric source to the dust remover are detected; step 102,the slope of the secondary voltage is obtained and compared with a preset slope value, the next step is started when the slope is higher than the preset slope value; step 103, a secondary voltage value is obtained and compared with preset voltage value, the next step is started when the voltage value is lower than the preset voltage value; step 104, a sampling value of the secondary current is obtained and compared with a preset current value, and a flicker trouble signal is generated when the sampling value is lower than the preset current value; and step 105, a fourth voltage value is generated by restraining the output of the high-frequency electric source when the flicker trouble signal is generated. The flashover control method for the high-frequency electric source of the dust remover completely avoids the misjudgment of the flashover, and the reliability and the stability of a device are improved.
Description
【Technical field】
The present invention relates to cleaner unit equipment, especially a kind of cleaner unit high frequency electric source flashover control method.
【Background technology】
High frequency electric source is well-known with its fast-response speed, power-efficient high, has become as the main of electrostatic precipitator at present
One of power supply.And the flashover control technology of high frequency electric source directly determines the quality of its performance.
The flashover control technology of existing high frequency electric source product, is made up of three phases, is flashover detection, flashover suppression successively
System, flashover are followed the tracks of.
Flashover detects, typically has two ways, a kind of is that monitoring exports to the slope of the secondary voltage change of cleaner unit, comes
Judge whether that flashover occurs；Another kind is whether monitoring output is less than a certain limit value to the secondary voltage value of cleaner unit, to judge
Whether flashover occurs.
Flashover suppresses, when flashover is detected, direct arrestment output, and make to export the secondary voltage to cleaner unit and be reduced to 0,
And maintain a period of time (typically hundreds of microsecond).
Flashover is followed the tracks of, and after flashover suppression terminates, control system according to three kinds of different rates of rise, carrys out a liter height output successively
Electric current, thus raising secondary voltage on cleaner unit, and the magnitude of voltage before reaching.Complete a flashover control process.
【Content of the invention】
For solving foregoing problems, the present invention proposes a kind of cleaner unit high frequency electric source flashover control method, to solve " in flashover
Easily cause erroneous judgement during detection, false sudden strain of a muscle be mistaken for really dodging " technical problem.
For reaching object defined above, the present invention adopts the following technical scheme that：A kind of cleaner unit high frequency electric source flashover control method,
It is characterized in that, including：
Monitoring high frequency electric source exports to the secondary voltage of cleaner unit and secondary current；
Obtain the slope of secondary voltage and compare with default slope value, when described slope is higher than described default slope value, then
Enter next step,
Obtain the magnitude of voltage of described secondary voltage and compare with preset voltage value, when described magnitude of voltage is less than described default electricity
Pressure value, then enter next step,
Obtain the sampled value of described secondary current and compare with pre-set current value, when described sampled value is less than described default electricity
Flow valuve, generates flashing fault signal.
Optionally：The described slope obtaining secondary voltage, including：Obtain continuous four secondary voltage value, and according to four
Individual secondary voltage value carries out calculating acquisition slope.
Optionally：Described four secondary voltage value are first voltage value, second voltage value, third voltage value, the 4th voltage
Value.
Optionally：When described flashing fault signal produces, described high frequency electric source is suppressed to be output as described 4th magnitude of voltage.
Optionally：Described high frequency electric source is suppressed to be output as described 4th magnitude of voltage, including：
The corresponding 4th secondary current value of 4th magnitude of voltage is found out in preset recording table according to described 4th magnitude of voltage,
And control described high frequency electric source to be output as described 4th secondary current value；
N number of secondary voltage value and N number of secondary voltage value corresponding secondary current value is stored in described log.
Optionally：Described high frequency electric source is controlled to be output as described 4th secondary current value, including：According to the described 4th 2
Primary current value determines the dutycycle of control signal, high frequency electric source output according to described Duty ratio control.
The present invention possesses following technique effect：Wet scrubber, low cold precipitator etc., due to itself, high frequency
When power supply uses thereon, change in voltage is very violent, and showing of flashover erroneous judgement often in therefore traditional flashover control mode
As, the flashover control technology of the present invention, it is entirely avoided the erroneous judgement of flashover, improve reliability, the stability of equipment.Meanwhile,
Flashover suppression when output is not suppressed to zero, improve the work efficiency of equipment it is ensured that cleaner unit work persistence.
These features of this present invention and advantage will be detailed in following specific embodiment, accompanying drawing exposure.This
Invent optimal embodiment or means will combine the detailed performance of accompanying drawing, but be not the restriction to technical solution of the present invention.
In addition, these features occurring in literary composition and accompanying drawing in each of the lower, key element and assembly be have multiple, and in order to represent convenient and
Marked different symbols or numeral, but all represent the part of same or similar construction or function.
【Brief description】
The present invention is described further below in conjunction with the accompanying drawings：
Fig. 1 is a kind of flow chart of cleaner unit high frequency electric source flashover control method of the embodiment of the present invention 1.
【Specific embodiment】
Accompanying drawing with reference to the embodiment of the present invention is explained and illustrated to the technical scheme of the embodiment of the present invention, but under
State embodiment and be only the preferred embodiments of the present invention, and not all.Based on the embodiment in embodiment, those skilled in the art
On the premise of not making creative work, obtained other embodiment, broadly falls into protection scope of the present invention.
Embodiment 1.
Referring to Fig. 1, a kind of cleaner unit high frequency electric source flashover control method, including following steps.
Step 101：Monitoring high frequency electric source exports to the secondary voltage of cleaner unit and secondary current.
Step 102：Obtain the slope of secondary voltage and compare with default slope value, when slope is higher than default slope value, then
Enter next step.
Step 103：Obtain the magnitude of voltage of secondary voltage and compare with preset voltage value, when magnitude of voltage is less than predeterminated voltage
Value, then enter next step.
Step 104：Obtain the sampled value of secondary current and compare with pre-set current value, when sampled value is less than predetermined current
Value, generates flashing fault signal.
The slope of the acquisition secondary voltage in abovementioned steps 102, including：Obtain continuous four secondary voltage value, and root
Carry out calculating according to four secondary voltage value and obtain slope.Four secondary voltage value are first voltage value, second voltage value, the 3rd electricity
Pressure value, the 4th magnitude of voltage.
Step 105：When flashing fault signal produces, suppression high frequency electric source is output as the 4th magnitude of voltage.
Suppression high frequency electric source in abovementioned steps 105 is output as the 4th magnitude of voltage, including：According to the 4th magnitude of voltage in pre-
If finding out the corresponding 4th secondary current value of the 4th magnitude of voltage in log, and high frequency electric source is controlled to be output as the four or two time
Current value；N number of secondary voltage value and N number of secondary voltage value corresponding secondary current value is stored in log.
Wherein, high frequency electric source is controlled to be output as the 4th secondary current value, including：Control is determined according to the 4th secondary current value
The dutycycle of signal processed, exports according to Duty ratio control high frequency electric source.
Preceding method, can be completed by a processor and corresponding match circuit.
Although preferred embodiments of the present invention have been described, but those skilled in the art once know basic creation
Property concept, then can make other change and modification to these embodiments.So, claims are intended to be construed to including excellent
Select embodiment and fall into being had altered and changing of the scope of the invention.
Obviously, those skilled in the art can carry out the various changes and modification essence without deviating from the present invention to the present invention
God and scope.So, if these modifications of the present invention and modification belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprise these changes and modification.
Claims (6)
1. a kind of cleaner unit high frequency electric source flashover control method is it is characterised in that include：
Monitoring high frequency electric source exports to the secondary voltage of cleaner unit and secondary current；
Obtain the slope of secondary voltage and compare with default slope value, when described slope is higher than described default slope value, then enter
Next step；
Obtain the magnitude of voltage of described secondary voltage and compare with preset voltage value, when described magnitude of voltage is less than described predeterminated voltage
Value, then enter next step；
Obtain the sampled value of described secondary current and compare with pre-set current value, when described sampled value is less than described predetermined current
Value, generates flashing fault signal.
2. according to claim 1 a kind of cleaner unit high frequency electric source flashover control method it is characterised in that described acquisition is secondary
The slope of voltage, including：Obtain continuous four secondary voltage value, and carry out calculating acquisition tiltedly according to four secondary voltage value
Rate.
3. according to claim 2 a kind of cleaner unit high frequency electric source flashover control method it is characterised in that：Described four secondary
Magnitude of voltage is first voltage value, second voltage value, third voltage value, the 4th magnitude of voltage.
4. according to claim 3 a kind of cleaner unit high frequency electric source flashover control method it is characterised in that：Described flicker fault
When signal produces, described high frequency electric source is suppressed to be output as described 4th magnitude of voltage.
5. according to claim 4 a kind of cleaner unit high frequency electric source flashover control method it is characterised in that：Suppress described high frequency
Power supply is output as described 4th magnitude of voltage, including：
The corresponding 4th secondary current value of 4th magnitude of voltage is found out in preset recording table according to described 4th magnitude of voltage, and controls
Make described high frequency electric source and be output as described 4th secondary current value；
N number of secondary voltage value and N number of secondary voltage value corresponding secondary current value is stored in described log.
6. according to claim 5 a kind of cleaner unit high frequency electric source flashover control method it is characterised in that：Control described high frequency
Power supply is output as described 4th secondary current value, including：Determine the duty of control signal according to described 4th secondary current value
Ratio high frequency electric source output according to described Duty ratio control.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201610771751.2A CN106391315B (en) | 2016-08-30 | 2016-08-30 | A kind of deduster high frequency electric source flashover control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610771751.2A CN106391315B (en) | 2016-08-30 | 2016-08-30 | A kind of deduster high frequency electric source flashover control method |
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| CN106391315A true CN106391315A (en) | 2017-02-15 |
| CN106391315B CN106391315B (en) | 2018-04-24 |
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| CN201610771751.2A Active CN106391315B (en) | 2016-08-30 | 2016-08-30 | A kind of deduster high frequency electric source flashover control method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100860A (en) * | 2022-01-29 | 2022-03-01 | 华能平凉发电有限责任公司 | Flashover voltage control method and device for electric dust collector |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0852381A (en) * | 1994-08-11 | 1996-02-27 | Kawasaki Heavy Ind Ltd | Controller for electrostatic precipitator |
| JP2008062149A (en) * | 2006-09-06 | 2008-03-21 | Matsushita Electric Ind Co Ltd | High voltage control circuit and dust collector |
| CN101648164A (en) * | 2008-08-14 | 2010-02-17 | 大连嘉禾工业控制技术有限公司 | High-voltage electrostatic precipitator control system |
| CN101954313A (en) * | 2010-09-08 | 2011-01-26 | 上海理工大学 | High-frequency high-voltage switching power supply for electric precipitation |
| CN103691559A (en) * | 2013-12-06 | 2014-04-02 | 江苏科技大学 | Fuzzy control method for high-frequency high-voltage power supply for electrostatic dust collection |
| CN104008944A (en) * | 2013-02-27 | 2014-08-27 | 东京毅力科创株式会社 | Plasma processor |
| CN105170333A (en) * | 2015-09-06 | 2015-12-23 | 江苏科技大学 | Fuzzy prediction control system of power supply for electrostatic dust collection and control method of fuzzy prediction control system |
-
2016
- 2016-08-30 CN CN201610771751.2A patent/CN106391315B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0852381A (en) * | 1994-08-11 | 1996-02-27 | Kawasaki Heavy Ind Ltd | Controller for electrostatic precipitator |
| JP2008062149A (en) * | 2006-09-06 | 2008-03-21 | Matsushita Electric Ind Co Ltd | High voltage control circuit and dust collector |
| CN101648164A (en) * | 2008-08-14 | 2010-02-17 | 大连嘉禾工业控制技术有限公司 | High-voltage electrostatic precipitator control system |
| CN101954313A (en) * | 2010-09-08 | 2011-01-26 | 上海理工大学 | High-frequency high-voltage switching power supply for electric precipitation |
| CN104008944A (en) * | 2013-02-27 | 2014-08-27 | 东京毅力科创株式会社 | Plasma processor |
| CN103691559A (en) * | 2013-12-06 | 2014-04-02 | 江苏科技大学 | Fuzzy control method for high-frequency high-voltage power supply for electrostatic dust collection |
| CN105170333A (en) * | 2015-09-06 | 2015-12-23 | 江苏科技大学 | Fuzzy prediction control system of power supply for electrostatic dust collection and control method of fuzzy prediction control system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114100860A (en) * | 2022-01-29 | 2022-03-01 | 华能平凉发电有限责任公司 | Flashover voltage control method and device for electric dust collector |
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| CN106391315B (en) | 2018-04-24 |
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