CN114950735A - Distribution method and device of electric field control power of electrostatic dust collector - Google Patents
Distribution method and device of electric field control power of electrostatic dust collector Download PDFInfo
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- 230000005684 electric field Effects 0.000 title claims abstract description 492
- 239000000428 dust Substances 0.000 title claims abstract description 102
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- 238000009826 distribution Methods 0.000 title claims description 14
- 230000004044 response Effects 0.000 claims abstract description 14
- 238000012937 correction Methods 0.000 claims description 44
- 239000012717 electrostatic precipitator Substances 0.000 claims description 23
- 238000012360 testing method Methods 0.000 claims description 22
- 230000006870 function Effects 0.000 claims description 9
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 4
- 239000003546 flue gas Substances 0.000 claims description 4
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
- Y02A50/2351—Atmospheric particulate matter [PM], e.g. carbon smoke microparticles, smog, aerosol particles, dust
Abstract
The invention discloses a method and a device for distributing electric field control power of an electrostatic dust collector, wherein the method comprises the following steps: in response to the control request, determining the functional relation between the dust removal efficiency and the electric field power of all electric fields of a target channel in the electrostatic dust collector; differentiating all the functional relations to obtain influence factors of the corresponding electric fields; determining the influence factor ratio corresponding to all the influence factors; the ratio of the influence factors is the electric field weight coefficient; and determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the acquired channel control power of the target channel. Therefore, the control power of each electric field is distributed in a targeted manner according to the dust removal characteristics of each electric field of the electrostatic dust collector, and the aims of improving the dust removal efficiency and saving the power consumption of the electrostatic dust collector are fulfilled.
Description
Technical Field
The present invention relates to the technical field of electrostatic precipitator control, and in particular, to a method and an apparatus for distributing electric field control power of an electrostatic precipitator.
Background
At present, the electrostatic precipitator system of a coal-fired power plant mainly carries out feedback adjustment and control according to outlet dust concentration, and the main control process is as follows: at the outlet of the electrostatic dust collector or the inlet of the chimney, operation and maintenance personnel adopt an online dust concentration measuring instrument to measure the dust concentration, and manually adjust the operating parameters of each electric field of the electrostatic dust collector according to the measured dust concentration or automatically adjust the operating parameters of each electric field of the electrostatic dust collector according to a preset control strategy, so that the dust concentration at the inlet of the chimney meets the requirement of the environmental protection standard.
Each channel of the electrostatic dust collector generally has 4-5 electric fields, and when each electric field is manually adjusted or automatically adjusted according to a preset control strategy, the control power of each electric field lacks reliable theoretical and experimental basis support, so that the dust collection efficiency of each channel is reduced or the power consumption is increased, and the energy-saving potential of the electrostatic dust collector cannot be fully exerted.
Therefore, the method for realizing intelligent control of the electrostatic dust collector is provided, and the power consumption of the electrostatic dust collector can be greatly saved.
Disclosure of Invention
The invention provides a method and a device for distributing electric field control power of an electrostatic dust collector, which can realize the targeted distribution of the electric field control power according to the dust removal characteristics of each electric field of the electrostatic dust collector and can greatly save the power consumption of the electrostatic dust collector.
In a first aspect, the present invention provides a method for distributing electric field control power of an electrostatic precipitator, including:
in response to the control request, determining the functional relation between the dust removal efficiency and the electric field power of all electric fields of a target channel in the electrostatic dust collector;
differentiating all the functional relations to obtain influence factors of the corresponding electric fields;
determining the influence factor ratios corresponding to all the influence factors; the ratio of the influence factors is an electric field weight coefficient;
and determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the acquired channel control power of the target channel.
Optionally, in response to the control request, determining a dust removal efficiency of all electric fields of the target channel in the electrostatic dust collector as a function of the electric field power includes:
s1, responding to the control request, performing control power-dust removal efficiency test on all electric fields of the target channel, and generating a corresponding control power-dust removal efficiency data set until the number of control power test sets reaches a preset number;
and S2, performing functional relation fitting based on the control power-dust removal efficiency data set to obtain the functional relation between the dust removal efficiency and the electric field power.
Optionally, the step S1 includes:
s11, responding to the control request, and acquiring the test dust removal efficiency of all electric fields of the target channel under random control power;
s12, generating a control power-dedusting efficiency relation curve under the random control power based on the corresponding relation between the random control power and the test dedusting efficiency;
s13, judging whether the number of the control power test groups is equal to the preset number; if not, returning to execute the step S12; if yes, go to step S2.
Optionally, determining electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel includes:
and if all the electric fields of the target channel are put into operation and the power control mode is in automatic control, taking the product of the channel control power of the target channel and the corresponding electric field weight coefficient as the electric field control power of all the electric fields of the target channel.
Optionally, determining electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel includes:
if any electric field exists in the target channel and the target channel is withdrawn from operation and the power control mode is under the automatic control, defining the electric field control power of the withdrawn electric field to be 0;
calculating to obtain first weight correction coefficients of all the operating electric fields by combining a preset first weight correction formula based on the electric field weight coefficient of the operating electric field of the target channel;
and taking the product of the first weight correction coefficient and the channel control power of the operating electric field as the electric field control power corresponding to the operating electric field.
Optionally, determining electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel includes:
if any two or more than two electric fields of the target channel exit the operation and the power control mode is in the automatic control mode, defining the electric field control power of the exiting operation electric field as 0;
and the operating electric field uniformly distributes the channel control power of the target channel to obtain the electric field control power corresponding to the operating electric field.
Optionally, determining electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel includes:
if any electric field of the target channel is put into operation and the power control mode is in manual control, calculating to obtain a second weight correction coefficient for operating and automatically controlling the electric field by combining a preset second weight correction formula based on the electric field weight coefficient of the operating electric field of the target channel;
taking the product of the second weight correction coefficient and the channel residual control power of the target channel as the electric field control power of the running and automatic control electric field; the channel residual control power is the difference between the channel control power of the target channel and the electric field power which is put into operation and is manually controlled.
Optionally, determining electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel includes:
and if any two or more than two electric fields are put into operation in the target channel and the power control mode is in the manual control mode, uniformly distributing the residual control power by the operation and automatic control electric field to obtain the electric field control power of the operation and automatic control electric field.
Optionally, determining electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel includes:
if any electric field exists in the target channel and exits from operation, and any electric field exists in the target channel and enters into operation, and the power control mode is under the manual control, the electric field control power of the exiting electric field is defined to be 0;
calculating to obtain a third weight correction coefficient for operating and automatically controlling the electric field by combining a preset third weight correction formula based on the electric field weight coefficient of the operating electric field of the target channel;
and taking the product of the third weight correction coefficient and the channel residual control power of the target channel as the electric field control power of the running and automatic control electric field.
Optionally, determining electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel includes:
if j electric fields exist in the target channel and exit from operation, and the power control mode with m electric fields is in the manual control, defining the electric field control power of the exiting operation electric field as 0; wherein j + m is more than or equal to 3;
uniformly distributing second residual control power by the operating and automatic control electric field to obtain electric field control power of the operating and automatic control electric field; the second residual control power is the difference between the channel control power of the target channel and not less than one electric field power in the manual control electric field.
Optionally, before determining the electric field ratios corresponding to all the channel electric fields based on all the channel electric fields, the method further includes:
judging whether a special electric field controlled by two chambers exists in all the electrified electric fields; if so, the distribution is performed by a chamber located in the targeted flue gas channel.
In a second aspect, the present invention also provides a distribution device of electric field control power of an electrostatic precipitator, comprising:
the response module is used for responding to the control request and determining the functional relation between the dust removal efficiency and the electric field power of all electric fields of a target channel in the electrostatic dust collector;
the processing module is used for carrying out differential processing on all the functional relations to obtain influence factors of the corresponding electric fields;
the electric field weight factor determining module is used for determining the influence factor proportion corresponding to all the influence factors; the ratio of the influence factors is the electric field weight coefficient;
and the electric field control power determining module is used for determining the electric field control power of all the electric fields of the target channel based on the electric field weight coefficient and the acquired channel control power of the target channel.
A third aspect of the application provides an electronic device comprising a processor and a memory;
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute the method for distributing electric field control power of an electrostatic precipitator according to the first aspect, according to instructions in the program code.
A fourth aspect of the present application provides a computer-readable storage medium for storing program code for executing the method for distributing electric field control power of an electrostatic precipitator according to the first aspect.
According to the technical scheme, the invention has the following advantages:
the invention determines the functional relation between the dust removal efficiency and the electric field power of all electric fields of a target channel in the electrostatic dust collector by responding to a control request; differentiating all the functional relations to obtain influence factors of the corresponding electric fields; determining the influence factor ratio corresponding to all the influence factors; the ratio of the influence factors is the electric field weight coefficient; and determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the acquired channel control power of the target channel. Therefore, the control power of each electric field is distributed in a targeted manner according to the dust removal characteristics of each electric field of the electrostatic dust collector, and the aims of improving the dust removal efficiency and saving the power consumption of the electrostatic dust collector are fulfilled.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts;
FIG. 1 is a flowchart illustrating a first embodiment of a method for distributing electric field control power of an electrostatic precipitator according to the present invention;
FIG. 2 is a flowchart illustrating the steps of a second embodiment of the method for distributing electric field control power of an electrostatic precipitator according to the present invention;
FIG. 3 is a schematic diagram of two-chamber separation control of an embodiment of a method for distributing electric field control power of an electrostatic precipitator according to the present invention;
fig. 4 is a block diagram of an embodiment of the distribution device for electric field control power of an electrostatic precipitator according to the present invention.
Detailed Description
The embodiment of the invention provides a method and a device for distributing electric field control power of an electrostatic dust collector, which can realize the targeted distribution of the electric field control power according to the dust removal characteristics of each electric field of the electrostatic dust collector and can greatly save the power consumption of the electrostatic dust collector.
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a flowchart illustrating a first step of an embodiment of a method for distributing electric field control power of an electrostatic precipitator, which may specifically include the following steps:
step S101, responding to a control request, and determining a functional relation between the dust removal efficiency and the electric field power of all electric fields of a target channel in the electrostatic dust collector;
in an alternative embodiment, determining the dust collection efficiency as a function of electric field power for all electric fields of a target channel in an electrostatic precipitator in response to a control request comprises:
responding to the control request, performing control power-dust removal efficiency tests on all electric fields of the target channel, and generating corresponding control power-dust removal efficiency data sets until the number of control power test sets reaches a preset set number;
performing functional relation fitting based on the control power-dust removal efficiency data set to obtain the functional relation between the dust removal efficiency and the electric field power
Step S102, carrying out differential processing on all the function relations to obtain influence factors of corresponding electric fields;
step S103, determining the influence factor proportion corresponding to all the influence factors; the ratio of the influence factors is the electric field weight coefficient;
and step S104, determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the acquired channel control power of the target channel.
The embodiment of the invention determines the functional relation between the dust removal efficiency and the electric field power of all electric fields of a target channel in the electrostatic dust collector by responding to the control request; differentiating all the functional relations to obtain influence factors of the corresponding electric fields; determining the influence factor ratio corresponding to all the influence factors; the ratio of the influence factors is the electric field weight coefficient; and determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the acquired channel control power of the target channel. Therefore, the control power of each electric field is distributed in a targeted manner according to the dust removal characteristics of each electric field of the electrostatic dust collector, and the aims of improving the dust removal efficiency and saving the power consumption of the electrostatic dust collector are fulfilled.
Referring to fig. 2, a flowchart of a second embodiment of a method for distributing electric field control power of an electrostatic precipitator of the present invention includes:
step S201, responding to the control request, and acquiring test dust removal efficiency of all electric fields of the target channel under random control power;
step S202, generating a control power-dedusting efficiency relation curve under the random control power based on the corresponding relation between the random control power and the test dedusting efficiency;
step S203, judging whether the number of the control power test groups is equal to the preset number; if not, returning to execute the step S202; if yes, go to step S204;
step S204, performing functional relation fitting based on the control power-dust removal efficiency data set to obtain a functional relation between the dust removal efficiency and the electric field power;
step S205, performing differential processing on all the functional relations to obtain influence factors of corresponding electric fields;
in the embodiment of the invention, a dust removal efficiency experiment is carried out on a target channel of an electrostatic dust collector to determine the influence factor of each electric field in the target channel, and the method specifically comprises the following steps:
(1) respectively adjusting the control power of the first electric field, keeping the control power of other electric fields unchanged, then testing the dust removal efficiency of the target channel to obtain a control power-dust removal efficiency data set until the number of the data set reaches the requirement of a preset number, and then fitting the data set to obtain a fitting function:
η 1 ＝f 1 (P 1 )，
wherein eta is 1 The dust removal efficiency of the first electric field in the target channel is shown.
The fitting function is then differentiated to obtain the influence factor of the first electric field, which is illustrated as: if the fitting function is a quadratic polynomial fit, then η 1 ＝k 11 P 1 2 +k 12 P 1 +K 10 In this case, the influence factor can be processed by two different methods, one is to take only the linear part, then C 1 ＝k 12 (ii) a The other is to take the complete differential coefficient, C 1 ＝k 11 P 1 +k 12 ；
(2) Testing the 2 nd, 3 rd and … th electric fields by the same method as the method (1) to obtain the influence factors of the corresponding electric fields; wherein in general n is 4 or 5.
It should be noted that, if the influence factor is determined, a complete differential coefficient is taken, and the control power magnitudes of different electric fields need to be taken according to the following formula, and then the influence factor is calculated:
P 1 ＝P 2 ＝...＝P n ＝P/n，
wherein P is the channel control power of the target channel, P 1 Control power of the first electric field for the target channel, P 2 Control power of second electric field for target channel, P n The control power of the nth electric field of the target channel is n, and n is the total number of the electric fields.
Step S206, determining the influence factor proportion corresponding to all the influence factors; the ratio of the influence factors is the electric field weight coefficient;
in the embodiment of the invention, the electric field weight coefficient calculation formula is as follows:
wherein, C i Is the influence factor of the ith electric field, i is the electric field number, W i Is the ith electric field weight coefficient.
In an optional embodiment, before determining the electric field ratios corresponding to all the channel electric fields based on all the channel electric fields, the method further includes:
judging whether a special electric field controlled by two chambers exists in all the channel electric fields; if yes, the target smoke channel chamber is used for distribution.
Referring to fig. 3, fig. 3 is a schematic diagram illustrating two-chamber separation control of a second embodiment of the distribution method of electric field control power of an electrostatic precipitator according to the present invention, wherein L1 and L2 are a first channel and a second channel, respectively, E11 to E15 are first to fifth electric fields of the first channel, and E21 to E25 are first to fifth electric fields of the second channel. In the embodiment of the invention, when two chambers of an electric field are separately controlled, the chambers in which the same flue gas channel is located are distributed as one channel.
Step S207, determining electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel;
in an optional embodiment, determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
and if all the electric fields of the target channel are put into operation and the power control mode is in automatic control, taking the product of the channel control power of the target channel and the corresponding electric field weight coefficient as the electric field control power of all the electric fields of the target channel.
In the embodiment of the present invention, when each electric field is put into operation and under automatic control, the control power of each electric field is:
P i ＝W i P，
wherein, P i The power is controlled for the electric field of the ith electric field.
In an optional embodiment, determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
if any electric field exists in the target channel and the target channel is withdrawn from operation and the power control mode is under the automatic control, defining the electric field control power of the withdrawn electric field to be 0;
calculating to obtain first weight correction coefficients of all the operating electric fields by combining a preset first weight correction formula based on the electric field weight coefficient of the operating electric field of the target channel;
and taking the product of the first weight correction coefficient and the channel control power of the operating electric field as the electric field control power corresponding to the operating electric field.
In the embodiment of the present invention, when the j-th electric field exits operation, pj is equal to 0, and the other electric fields need to recalculate the electric field weight coefficient according to the following formula (i.e. the first weight correction formula) to obtain the first weight correction coefficient, which is specifically:
wherein i' is the electric field number except the j-th electric field, W i 'is a first weight correction coefficient of the i' th electric field, K i' The coefficients of other electric fields are distributed to the j electric field influence factor, the coefficients are determined according to the specific type of the electrostatic dust collector and the actual operation condition,
then, according to the formula P i ＝W i And P, determining electric field control power corresponding to the electric fields except the j electric field.
In an optional embodiment, determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
if any two or more electric fields of the target channel exit the operation and the power control mode is under the automatic control, defining the electric field control power of the exiting operation electric field as 0;
and the operating electric field uniformly distributes the channel control power of the target channel to obtain the electric field control power corresponding to the operating electric field.
In the embodiment of the invention, when m (m is more than or equal to 2) electric fields of one channel exit the operation, the residual electric field control power Pi is uniformly distributed, namely:
Pi＝P/(n-m)，
wherein m is the number of electric fields exiting the run.
In an optional embodiment, determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
if any electric field of the target channel is put into operation and the power control mode is in manual control, calculating to obtain a second weight correction coefficient of the operating and automatically-controlled electric field based on the electric field weight coefficient of the operating electric field of the target channel and a preset second weight correction formula;
taking the product of the second weight correction coefficient and the channel residual control power of the target channel as the electric field control power of the running and automatic control electric field; the channel residual control power is the difference between the channel control power of the target channel and the electric field power which is put into operation and is manually controlled.
In the embodiment of the invention, when the jth electric field is put into operation, but the power is under manual control, namely P j The remaining value is the product of the channel control power of the target channel and the electric field weight coefficient of the jth electric field, and the other electric fields need to recalculate the electric field weight coefficient according to the following formula (i.e. the second weight correction formula) to obtain a second weight correction coefficient, specifically:
wherein i' is the electric field number except the j-th electric field.
The remaining power in the embodiment of the invention is P-P j 。
And finally, calculating the control power of other electric fields:
P i ＝W i” (P-Pj)。
in an optional embodiment, determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
and if any two or more than two electric fields are put into operation in the target channel and the power control mode is in the manual control mode, uniformly distributing the residual control power by the operation and automatic control electric field to obtain the electric field control power of the operation and automatic control electric field.
In the embodiment of the invention, when m (m is more than or equal to 2) electric fields of one channel are put into operation but are manually controlled, the residual electric field controls the power P i Uniform distribution, namely:
wherein, P l Is manually controlled electric field power.
In an optional embodiment, determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
if any electric field exists in the target channel and exits from operation, and any electric field exists in the target channel and enters into operation, and the power control mode is under the manual control, the electric field control power of the exiting electric field is defined to be 0;
calculating to obtain a third weight correction coefficient for operating and automatically controlling the electric field by combining a preset third weight correction formula based on the electric field weight coefficient of the operating electric field of the target channel;
and taking the product of the third weight correction coefficient and the channel residual control power of the target channel as the electric field control power of the running and automatic control electric field.
In the embodiment of the invention, when the jth electric field is removedOut of operation, m' th electric field put into operation but under manual control, P j ＝0，P m' Keeping the power of the residual electric field unchanged, namely, the product of the channel control power of the target channel and the electric field weight coefficient of the j' th electric field, and operating and automatically controlling the electric field control power of the electric field, then distributing the power of the residual electric field according to the following method:
wherein i ' ″ is the number of electric fields other than the j ' and m ' electric fields, K i”' The coefficients of the j ' and m ' external electric fields are divided for the j ' electric field influence factor, determined according to the specific electrostatic dust collector type and the actual operation condition, and
then, the control power P of other electric fields is calculated i Namely:
P i ＝W i”' (P-P m' )。
in an optional embodiment, determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
if j electric fields exist in the target channel and exit from operation, and the power control mode with m electric fields is in the manual control, defining the electric field control power of the exiting operation electric field as 0; wherein j + m is more than or equal to 3;
uniformly distributing second residual control power by the operation and automatic control electric field to obtain electric field control power of the operation and automatic control electric field; the second residual control power is the difference between the channel control power of the target channel and the electric field power of not less than one manual control electric field.
In the embodiment of the invention, when j 'electric fields are out of operation and m' electric fields are manually controlled (j '+ m' > is not less than 3), the control power P of the residual electric field is i Uniformly distributing, namely:
compared with the existing energy-saving control method of the electrostatic dust collector, the method has the following defects: (1) the method adopts a manual starting and stopping field or a manual reduction mode of the operation parameters of the electrostatic dust collector for control, the adjustment mode is extensive, and the efficiency is low; (2) the method adopts a mode of simply setting intermittent pulse power supply in advance, only depends on manual setting, and is unscientific and inaccurate, and the electrostatic dust collector cannot operate in an optimal operation mode and operation parameters; (3) the control power of each electric field of the same channel of the electrostatic dust collector is lack of reliable theoretical and experimental basis support, and the intelligent control of the electrostatic dust collector cannot be adapted. In the distribution method of the electric field control power of the electrostatic dust collector provided by the embodiment of the invention, the functional relation between the dust removal efficiency and the electric field power of all electric fields of a target channel in the electrostatic dust collector is determined by responding to a control request; differentiating all the functional relations to obtain influence factors of the corresponding electric fields; determining the influence factor ratio corresponding to all the influence factors; the ratio of the influence factors is the electric field weight coefficient; and determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the acquired channel control power of the target channel. Therefore, the control power of each electric field is distributed in a targeted manner according to the dust removal characteristics of each electric field of the electrostatic dust collector, and the aims of improving the dust removal efficiency and saving the power consumption of the electrostatic dust collector are fulfilled.
Referring to fig. 3, a block diagram of an embodiment of a distribution device for electric field control power of an electrostatic precipitator is shown, which includes the following modules:
a response module 401, configured to determine, in response to the control request, a functional relationship between the dust removal efficiency and the electric field power of all electric fields of a target channel in the electrostatic precipitator;
a processing module 402, configured to perform differential processing on all the function relationships to obtain an influence factor of a corresponding electric field;
an electric field weight factor determining module 403, configured to determine an influence factor ratio corresponding to all the influence factors; the ratio of the influence factors is the electric field weight coefficient;
an electric field control power determining module 404, configured to determine electric field control powers of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel.
In an alternative embodiment, the response module 401 includes:
the response submodule is used for responding to the control request, performing control power-dust removal efficiency test on all electric fields of the target channel, and generating a corresponding control power-dust removal efficiency data set until the number of control power test sets reaches a preset number;
and the functional relation determining submodule is used for performing functional relation fitting on the basis of the control power-dust removal efficiency data set to obtain the functional relation between the dust removal efficiency and the electric field power.
In an alternative embodiment, the response submodule includes:
the response unit is used for responding to the control request and acquiring the test dust removal efficiency of all electric fields of the target channel under random control power;
a relation determining unit, configured to generate a control power-dust removal efficiency relation curve under the random control power based on a correspondence between the random control power and the test dust removal efficiency;
the judging unit is used for judging whether the number of the control power test groups is equal to the preset number; if not, returning to execute the relation determining unit; and if so, executing the functional relation determining submodule.
In an alternative embodiment, the electric field control power determination module 404 includes:
and the first electric field control power determining submodule is used for taking the product of the channel control power of the target channel and the corresponding electric field weight coefficient as the electric field control power of all the electric fields of the target channel when all the electric fields of the target channel are put into operation and the power control mode is under automatic control.
In an alternative embodiment, the electric field control power determination module 404 includes:
the first definition sub-module is used for defining the electric field control power of the withdrawn electric field as 0 if any electric field of the target channel exits the operation and the power control mode is under the automatic control;
the first weight correction coefficient determining submodule is used for calculating and obtaining first weight correction coefficients of all the operating electric fields by combining a preset first weight correction formula based on the electric field weight coefficient of the operating electric field of the target channel;
and the second electric field control power determining submodule is used for taking the product of the first weight correction coefficient and the channel control power of the operating electric field as the electric field control power corresponding to the operating electric field.
In an alternative embodiment, the electric field control power determination module 404 includes:
the second definition submodule is used for defining the electric field control power of the electric field which exits from the operation as 0 if any two or more electric fields exit from the operation of the target channel and the power control mode is in the automatic control;
and the third electric field control power determining submodule is used for uniformly distributing the channel control power of the target channel by the operating electric field to obtain the electric field control power corresponding to the operating electric field.
In an alternative embodiment, the electric field control power determination module 404 includes:
a second weight correction coefficient determination submodule, configured to, if any electric field of the target channel is put into operation and the power control mode is under manual control, calculate, based on an electric field weight coefficient of an operating electric field of the target channel, a second weight correction coefficient that operates and automatically controls the electric field in combination with a preset second weight correction formula;
a fourth electric field control power determination submodule, configured to use a product of the second weight correction coefficient and the channel remaining control power of the target channel as the electric field control power of the operational and automatic control electric field; the channel residual control power is the difference between the channel control power of the target channel and the electric field power which is put into operation and is manually controlled.
In an alternative embodiment, the electric field control power determination module 404 includes:
and the fifth electric field control power determining submodule is used for uniformly distributing the residual control power by the operation and automatic control electric field to obtain the electric field control power of the operation and automatic control electric field if any two or more electric fields are put into operation in the target channel and the power control mode is in the manual control.
In an alternative embodiment, the electric field control power determination module 404 includes:
a third defining submodule, configured to define electric field control power of an electric field which exits from operation to be 0, if any electric field exits from operation in the target channel and any electric field enters into operation, and the power control mode is under the manual control;
the third weight correction coefficient determining submodule is used for calculating to obtain a third weight correction coefficient which operates and automatically controls the electric field by combining a preset third weight correction formula based on the electric field weight coefficient of the operating electric field of the target channel;
and the sixth electric field control power determining submodule is used for taking the product of the third weight correction coefficient and the channel residual control power of the target channel as the electric field control power of the running and automatic control electric field.
In an alternative embodiment, the electric field control power determination module 404 includes:
the fourth defining submodule is used for defining the electric field control power of the electric field which is withdrawn from operation to be 0 if j electric fields are withdrawn from operation in the target channel and the power control mode of m electric fields is in the manual control; wherein j + m is more than or equal to 3;
a seventh electric field control power determining submodule for uniformly distributing the second remaining control power with the operating and automatic control electric field to obtain the electric field control power of the operating and automatic control electric field; the second residual control power is the difference between the channel control power of the target channel and not less than one electric field power in the manual control electric field.
In an optional embodiment, further comprising:
the judging module is used for judging whether a special electric field controlled by two chambers exists in all the electrified electric fields; if so, the distribution is performed by a chamber located in the targeted flue gas channel.
The application also provides an electronic device, which comprises a processor and a memory;
the memory is used for storing the program codes and transmitting the program codes to the processor;
the processor is configured to execute the method for distributing electric field control power of the electrostatic precipitator in the above-described method embodiment according to instructions in the program code.
The present application also provides a computer-readable storage medium for storing program code for performing the method of distributing electric field control power of an electrostatic precipitator in the above-described method embodiments.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for executing all or part of the steps of the method described in the embodiments of the present application through a computer device (which may be a personal computer, a server, or a network device). And the aforementioned storage medium includes: a U disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (14)
1. A method for distributing electric field control power of an electrostatic precipitator, comprising:
in response to the control request, determining the functional relation between the dust removal efficiency and the electric field power of all electric fields of a target channel in the electrostatic dust collector;
differentiating all the functional relations to obtain influence factors of corresponding electric fields;
determining the influence factor ratio corresponding to all the influence factors; the ratio of the influence factors is the electric field weight coefficient;
and determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the acquired channel control power of the target channel.
2. The method of claim 1, wherein determining the dust collection efficiency of all electric fields of the target channel in the electrostatic precipitator as a function of the electric field power in response to the control request comprises:
step S1, responding to the control request, performing control power-dust removal efficiency test on all electric fields of the target channel, and generating a corresponding control power-dust removal efficiency data set until the number of control power test sets reaches a preset number;
and step S2, performing functional relation fitting based on the control power-dust removal efficiency data set to obtain the functional relation between the dust removal efficiency and the electric field power.
3. The method of claim 1, wherein determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
and if all the electric fields of the target channel are put into operation and the power control mode is in automatic control, taking the product of the channel control power of the target channel and the corresponding electric field weight coefficient as the electric field control power of all the electric fields of the target channel.
4. The method of claim 3, wherein determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
if any electric field exists in the target channel and the target channel is withdrawn from operation and the power control mode is under the automatic control, defining the electric field control power of the withdrawn electric field to be 0;
calculating to obtain first weight correction coefficients of all the operating electric fields by combining a preset first weight correction formula based on the electric field weight coefficient of the operating electric field of the target channel;
and taking the product of the first weight correction coefficient and the channel control power of the operating electric field as the electric field control power corresponding to the operating electric field.
5. The method according to claim 4, wherein determining the electric field control power of all electric fields of the target channel based on the electric field weighting coefficient and the obtained channel control power of the target channel comprises:
if any two or more electric fields of the target channel exit the operation and the power control mode is under the automatic control, defining the electric field control power of the exiting operation electric field as 0;
and the operating electric field uniformly distributes the channel control power of the target channel to obtain the electric field control power corresponding to the operating electric field.
6. The method of claim 5, wherein determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
if any electric field of the target channel is put into operation and the power control mode is in manual control, calculating to obtain a second weight correction coefficient of the operating and automatically-controlled electric field based on the electric field weight coefficient of the operating electric field of the target channel and a preset second weight correction formula;
taking the product of the second weight correction coefficient and the channel residual control power of the target channel as the electric field control power of the running and automatic control electric field; the channel residual control power is the difference between the channel control power of the target channel and the electric field power which is put into operation and is manually controlled.
7. The method of claim 6, wherein determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
and if any two or more than two electric fields are put into operation in the target channel and the power control mode is in the manual control mode, uniformly distributing the residual control power by the operation and automatic control electric field to obtain the electric field control power of the operation and automatic control electric field.
8. The method according to claim 7, wherein determining the electric field control power of all the electric fields of the target channel based on the electric field weighting coefficients and the obtained channel control power of the target channel comprises:
if any electric field exists in the target channel and exits from operation, and any electric field enters into operation, and the power control mode is under the manual control, defining the electric field control power of the exiting electric field to be 0;
calculating to obtain a third weight correction coefficient for operating and automatically controlling the electric field by combining a preset third weight correction formula based on the electric field weight coefficient of the operating electric field of the target channel;
and taking the product of the third weight correction coefficient and the channel residual control power of the target channel as the electric field control power of the running and automatic control electric field.
9. The method of claim 8, wherein determining the electric field control power of all electric fields of the target channel based on the electric field weight coefficient and the obtained channel control power of the target channel comprises:
if j electric fields exist in the target channel and exit from operation, and the power control mode with m electric fields is in the manual control, defining the electric field control power of the exiting operation electric field as 0; wherein j + m is more than or equal to 3;
uniformly distributing second residual control power by the operation and automatic control electric field to obtain electric field control power of the operation and automatic control electric field; the second residual control power is the difference between the channel control power of the target channel and the electric field power of not less than one manual control electric field.
10. The method for distributing electric field control power of an electrostatic precipitator according to claim 2, wherein the step S1 includes:
step S11, responding to the control request, and acquiring the test dust removal efficiency of all electric fields of the target channel under random control power;
step S12, based on the corresponding relation between the random control power and the test dust removal efficiency, generating a control power-dust removal efficiency relation curve under the random control power;
step S13, determining whether the number of the control power test sets is equal to the preset number; if not, returning to execute the step S12; if yes, go to step S2.
11. The method of claim 1, wherein before determining the electric field ratio corresponding to all the channel electric fields based on all the channel electric fields, the method further comprises:
judging whether a special electric field controlled by two chambers exists in all the channel electric fields; if so, the distribution is performed by a chamber located in the targeted flue gas channel.
12. An electric field controlled power distribution apparatus for an electrostatic precipitator, comprising:
the response module is used for responding to the control request and determining the functional relation between the dust removal efficiency and the electric field power of all electric fields of a target channel in the electrostatic dust collector;
the processing module is used for carrying out differential processing on all the function relations to obtain the influence factors of the corresponding electric fields;
the electric field weight factor determining module is used for determining the influence factor proportion corresponding to all the influence factors; the ratio of the influence factors is the electric field weight coefficient;
and the electric field control power determining module is used for determining the electric field control power of all the electric fields of the target channel based on the electric field weight coefficient and the acquired channel control power of the target channel.
13. An electronic device comprising a processor and a memory, the memory storing computer readable instructions that, when executed by the processor, perform the method of any of claims 1-11.
14. A storage medium on which a computer program is stored, which computer program, when being executed by a processor, is adapted to carry out the method according to any one of claims 1-11.
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