CN106391315B - A kind of deduster high frequency electric source flashover control method - Google Patents

A kind of deduster high frequency electric source flashover control method Download PDF

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Publication number
CN106391315B
CN106391315B CN201610771751.2A CN201610771751A CN106391315B CN 106391315 B CN106391315 B CN 106391315B CN 201610771751 A CN201610771751 A CN 201610771751A CN 106391315 B CN106391315 B CN 106391315B
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voltage
value
electric source
frequency electric
deduster
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CN201610771751.2A
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CN106391315A (en
Inventor
赵碧海
姚凌飞
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Zhejiang Feida Environmental Science and Technology Co Ltd
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Zhejiang Feida Environmental Science and Technology Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B03SEPARATION 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
    • B03CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34Constructional details or accessories or operation thereof
    • B03C3/66Applications of electricity supply techniques
    • B03C3/68Control systems therefor

Abstract

This application involves a kind of deduster high frequency electric source flashover control method, including, following steps.Step 101:Monitoring high frequency electric source exports the secondary voltage and secondary current to deduster.Step 102:Obtain the slope of secondary voltage and compared with default slope value, preset slope value when slope is higher than, then enter in next step.Step 103:Obtain the magnitude of voltage of secondary voltage and compared with preset voltage value, when magnitude of voltage be less than preset voltage value, then enter next step.Step 104:The sampled value of secondary current is obtained and compared with pre-set current value, when sampled value is less than pre-set current value, generation flashing fault signal.Step 105:When flashing fault signal produces, the output for suppressing high frequency electric source is the 4th magnitude of voltage.The flashover control technology of the application, it is entirely avoided the erroneous judgement of flashover, improves reliability, the stability of equipment.

Description

A kind of deduster high frequency electric source flashover control method
【Technical field】
The present invention relates to deduster equipment, especially a kind of deduster 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 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 of three phases, is flashover detection, flashover suppression successively System, flashover tracking.
Flashover detects, and generally has two ways, a kind of is the slope that monitoring output changes to the secondary voltage of deduster, is come Judge whether flashover occur;Another kind is whether monitoring output is less than a certain limit value to the secondary voltage value of deduster, to judge Whether flashover is occurred.
Flashover suppresses, and when detecting flashover, the output of direct arrestment makes to export and is reduced to 0 to the secondary voltage of deduster, And maintain a period of time (being typically hundreds of microseconds).
Flashover tracks, and after flashover suppresses, control system is successively according to three kinds of different rates of rise, to raise output Electric current, so as to raise the secondary voltage on deduster, and the magnitude of voltage before reaching.Complete a flashover control process.
【The content of the invention】
To solve foregoing problems, the present invention proposes a kind of deduster high frequency electric source flashover control method, to solve " in flashover Erroneous judgement is be easy to cause during detection, false sudden strain of a muscle is mistaken for really dodging " technical problem.
To reach object defined above, the present invention adopts the following technical scheme that:A kind of deduster high frequency electric source flashover control method, It is characterised in that it includes:
Monitoring high frequency electric source exports the secondary voltage and secondary current to deduster;
Obtain the slope of secondary voltage and compared with default slope value, when the slope is higher than the default slope value, then Into in next step,
The magnitude of voltage of the secondary voltage is obtained and compared with preset voltage value, when the magnitude of voltage is less than the default electricity Pressure value, then enter in next step,
The sampled value of the secondary current is obtained and compared with pre-set current value, when the sampled value is less than the default electricity Flow valuve, generates flashing fault signal.
Optionally:The slope for obtaining secondary voltage, including:Continuous four secondary voltage values are obtained, and according to four A secondary voltage value, which calculate, obtains slope.
Optionally:Four secondary voltage values are the first voltage value, second voltage value, third voltage value, the 4th voltage Value.
Optionally:When the flashing fault signal produces, the output for suppressing the high frequency electric source is the 4th magnitude of voltage.
Optionally:The output for suppressing the high frequency electric source is the 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 the 4th magnitude of voltage, And it is the 4th secondary current value to control the output of the high frequency electric source;
N number of secondary voltage value and the corresponding secondary current value of N number of secondary voltage value are stored in the record sheet.
Optionally:The output for controlling the high frequency electric source is the 4th secondary current value, including:According to the described 4th 2 Primary current value determines the duty cycle of control signal, is exported according to high frequency electric source described in the Duty ratio control.
The present invention possesses following technique effect:Wet scrubber, low cold precipitator etc., the characteristics of due to itself, high frequency Voltage change is very violent when power supply uses on it, therefore showing for flashover erroneous judgement often occurs in traditional flashover control mode As flashover control technology of the invention, it is entirely avoided the erroneous judgement of flashover, improves reliability, the stability of equipment.Meanwhile Output is not suppressed to zero by flashover when suppressing, and improves the work efficiency of equipment, ensure that the continuation of deduster work.
These features and advantage of this present invention will be detailed in following embodiment, attached drawing exposure.This Detailed performance will be carried out with reference to attached drawing by inventing optimal embodiment or means, but be not the limitation to technical solution of the present invention. In addition, it is each be with these features, key element and the component occurred in attached drawing hereafter have it is multiple, and in order to represent it is convenient and Different symbols or numeral are marked, but represents same or similar construction or the component of function.
【Brief description of the drawings】
The present invention is described further below in conjunction with the accompanying drawings:
Fig. 1 is a kind of flow chart of deduster high frequency electric source flashover control method of the embodiment of the present invention 1.
【Embodiment】
The technical solution of the embodiment of the present invention is explained and illustrated with reference to the attached drawing of the embodiment of the present invention, but under Embodiment is stated to be merely a preferred embodiment of the present invention, and it is not all.Based on the embodiment in embodiment, those skilled in the art Other embodiment is obtained on the premise of creative work is not made, belongs to protection scope of the present invention.
Embodiment 1.
Referring to Fig. 1, a kind of deduster high frequency electric source flashover control method, including, following steps.
Step 101:Monitoring high frequency electric source exports the secondary voltage and secondary current to deduster.
Step 102:Obtain the slope of secondary voltage and compared with default slope value, preset slope value when slope is higher than, then Into in next step.
Step 103:The magnitude of voltage of secondary voltage is obtained and compared with preset voltage value, when magnitude of voltage is less than predeterminated voltage Value, then enter in next step.
Step 104:The sampled value of secondary current is obtained and compared with pre-set current value, when sampled value is less than predetermined current Value, generates flashing fault signal.
The slope of acquisition secondary voltage in abovementioned steps 102, including:Obtain continuous four secondary voltage values, and root According to four secondary voltage values calculate and obtain slope.Four secondary voltage values are the first voltage value, second voltage value, the 3rd electricity Pressure value, the 4th magnitude of voltage.
Step 105:When flashing fault signal produces, the output for suppressing high frequency electric source is the 4th magnitude of voltage.
The output of suppression high frequency electric source in abovementioned steps 105 is the 4th magnitude of voltage, including:According to the 4th magnitude of voltage in pre- If the corresponding 4th secondary current value of the 4th magnitude of voltage is found out in record sheet, and control high frequency electric source output be the four or two time Current value;N number of secondary voltage value and the corresponding secondary current value of N number of secondary voltage value are stored in record sheet.
Wherein, the output for controlling high frequency electric source is the 4th secondary current value, including:Determine to control according to the 4th secondary current value The duty cycle 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 these embodiments other change and modification.So appended claims be intended to be construed to include it is excellent Select embodiment and fall into all change and modification of the scope of the invention.
Obviously, various changes and modifications can be made to the invention without departing from essence of the invention by those skilled in the art God and scope.In this way, if these modifications and changes of the present invention belongs to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising including these modification and variations.

Claims (6)

  1. A kind of 1. deduster high frequency electric source flashover control method, it is characterised in that including:
    Monitoring high frequency electric source exports the secondary voltage and secondary current to deduster;
    Obtain the slope of secondary voltage and compared with default slope value, when the slope is higher than the default slope value, then enter In next step;
    The magnitude of voltage of the secondary voltage is obtained and compared with preset voltage value, when the magnitude of voltage is less than the predeterminated voltage Value, then enter in next step;
    The sampled value of the secondary current is obtained and compared with pre-set current value, when the sampled value is less than the predetermined current Value, generates flashing fault signal.
  2. 2. a kind of deduster high frequency electric source flashover control method according to claim 1, it is characterised in that the acquisition is secondary The slope of voltage, including:Continuous four secondary voltage values are obtained, and according to four secondary voltage values calculate and obtains tiltedly Rate.
  3. A kind of 3. deduster high frequency electric source flashover control method according to claim 2, it is characterised in that:Described four secondary Magnitude of voltage is the first voltage value, second voltage value, third voltage value, the 4th magnitude of voltage.
  4. A kind of 4. deduster high frequency electric source flashover control method according to claim 3, it is characterised in that:The flicker failure When signal produces, the output for suppressing the high frequency electric source is the 4th magnitude of voltage.
  5. A kind of 5. deduster high frequency electric source flashover control method according to claim 4, it is characterised in that:Suppress the high frequency The output of power supply is the 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 the 4th magnitude of voltage, and is controlled The output for making the high frequency electric source is the 4th secondary current value;
    N number of secondary voltage value and the corresponding secondary current value of N number of secondary voltage value are stored in the record sheet.
  6. A kind of 6. deduster high frequency electric source flashover control method according to claim 5, it is characterised in that:Control the high frequency The output of power supply is the 4th secondary current value, including:The duty of control signal is determined according to the 4th secondary current value Than being exported according to high frequency electric source described in the Duty ratio control.
CN201610771751.2A 2016-08-30 2016-08-30 A kind of deduster high frequency electric source flashover control method Active CN106391315B (en)

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Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3112384B2 (en) * 1994-08-11 2000-11-27 川崎重工業株式会社 Electric dust collector control device
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
CN101954313B (en) * 2010-09-08 2013-01-23 上海理工大学 High-frequency high-voltage switching power supply for electric precipitation
JP6084860B2 (en) * 2013-02-27 2017-02-22 東京エレクトロン株式会社 Plasma processing equipment
CN103691559B (en) * 2013-12-06 2016-01-13 江苏科技大学 Electrostatic precipitation high-frequency and high-voltage power supply fuzzy control method
CN105170333B (en) * 2015-09-06 2018-01-30 江苏科技大学 The Fuzzy Predictive Control System and method of electrostatic precipitation power supply

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