Electrostatic dust collector control method and related device

Abstract

The invention discloses an electrostatic precipitator control method and a related device, and relates to the field of control, the electrostatic precipitator control method can be applied to an electrostatic precipitator for dedusting boiler flue gas, and the control method of each channel of the electrostatic precipitator comprises the following steps: obtaining a current boiler load value; according to the corresponding relation between the boiler load value and the secondary current set value, the secondary current set value of the four electric fields is determined, the high-voltage parameter set value of the current channel is adjusted according to the determined set value, and on the basis, the set value can be automatically increased under the high-load working condition so as to achieve the good dust collection effect; the set value is automatically lowered under the low-load working condition to realize voltage reduction and energy conservation, finally, the task of automatically adjusting the high-voltage electric field parameters according to the real-time load is realized, and the labor cost is saved; and when it is monitored that the actual secondary voltage value of any electric field is not higher than the secondary voltage limit value, information representing abnormal operation of the electric field of the current channel is output, and a basis is provided for ensuring the normal dust collection effect of electric precipitation of the channel.

Description

Technical Field

[0001] The present application relates to the field of control technology, and in particular to an electrostatic precipitator control method and related devices. Background Art

[0002] During the combustion process, the boiler will generate a large amount of flue gas, which often contains a large amount of dust particles. If the flue gas generated by the boiler is directly discharged into the atmosphere without treatment, it will cause serious pollution to the environment and affect the air quality. In addition, if the dust in the flue gas is not treated in time, it may also accumulate inside the boiler, affecting the production efficiency of the boiler. To solve the above problems, an electrostatic precipitator can be set up to treat the flue gas generated by the boiler to remove the dust.

[0003] At present, when applying the high-voltage power supply control methods of the electrostatic precipitator such as spark tracking and charging ratio, the secondary current and secondary voltage of the high-voltage power supply of the electrostatic precipitator are manually adjusted to change the high-voltage parameters of the electrostatic precipitator, thereby achieving the control task of the electrostatic precipitator. However, the manual adjustment of the high-voltage electric field parameters is relatively cumbersome, and it is difficult to track the flue gas output of the boiler in a timely manner, making the current control effect poor. Summary of the invention

[0004] In view of the above problems, the present application provides an electrostatic precipitator control method and related devices to achieve the purpose of automatically controlling the electrostatic precipitator according to the flue gas output of the boiler, thereby saving manpower.

[0005] The specific plan is as follows:

[0006] In a first aspect, the present application provides an electrostatic precipitator control method, which is applied to a double-chamber four-electric field electrostatic precipitator in a boiler dust collection system, wherein the double-chamber four-electric field electrostatic precipitator is used to perform dust removal treatment on flue gas generated by a single boiler unit, and the double-chamber four-electric field electrostatic precipitator includes four channels, each of which includes four electric fields arranged according to the direction of flue gas flow, and the control method of each channel includes:

[0007] Obtaining a current boiler load value of the boiler;

[0008] According to the correspondence between the preset boiler load value and the secondary current setting value of each electric field, the secondary current setting values ​​of the four electric fields of the current channel corresponding to the current boiler load value are determined; wherein the correspondence between the boiler load value and the secondary current setting value of each electric field includes: as the boiler load value increases, the secondary current setting value of the same electric field does not decrease; and under the same boiler load value, the secondary current setting values ​​of the four electric fields arranged according to the flue gas flow direction in the same channel do not increase;

[0009] According to the determined secondary current setting values ​​of the four electric fields of the current channel, the high voltage parameter setting values ​​of the four electric fields of the current channel are adjusted so that the actual values ​​of the secondary currents of the four electric fields of the current channel tend to the determined secondary current setting values ​​of the four electric fields of the current channel;

[0010] When it is monitored that the actual value of the secondary voltage of any electric field of the current channel is not higher than the preset secondary voltage limit value, information indicating abnormal operation of the electric field of the current channel is output.

[0011] In a possible implementation, the four channels are respectively provided with corresponding automatic throw-in and throw-out switches for realizing separate control of each channel;

[0012] When it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, information indicating abnormal operation of the electric field of the current channel is output, including:

[0013] When it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, a control instruction is output to the automatic on / off switch of the current channel, and the control instruction is used to turn off the automatic on / off switch of the current channel to stop automatically adjusting the high-voltage parameter setting values ​​of the four electric fields of the current channel according to the current load value of the boiler.

[0014] In a possible implementation, when it is monitored that the secondary voltage value of any electric field of the current channel is not higher than a preset secondary voltage limit value, outputting information characterizing abnormal operation of the electric field of the current channel further includes:

[0015] Output instruction information to the operation and maintenance personnel of the dual-chamber four-field electrostatic precipitator, wherein the instruction information is used to instruct manual control of the high-voltage parameter setting values ​​of the four electric fields of the current channel.

[0016] In one possible implementation, the secondary voltage limit is a secondary voltage value that is a preset value higher than the enabling voltage of the electric field of the dual-chamber four-field electrostatic precipitator, and the enabling voltage is a secondary voltage value that enables the dual-chamber four-field electrostatic precipitator to start working.

[0017] In one possible implementation, the correspondence between the boiler load value and the secondary current setting value of each electric field includes: multiple boiler load ranges and secondary current arrays corresponding to the multiple boiler load ranges, each secondary current array includes the secondary current setting values ​​of four electric fields arranged according to the flue gas flow direction.

[0018] The second aspect of the present application provides an electrostatic precipitator control device, which is applied to a double-chamber four-electric field electrostatic precipitator in a boiler dust collection system, and the double-chamber four-electric field electrostatic precipitator is used to perform dust removal treatment on the flue gas generated by a single boiler unit, and the double-chamber four-electric field electrostatic precipitator includes four channels, and each channel includes four electric fields arranged according to the flue gas flow direction; the device includes:

[0019] A boiler load acquisition unit, used to acquire a current boiler load value of the boiler;

[0020] An automatic adjustment unit, the automatic adjustment unit includes high-voltage parameter adjustment modules corresponding to different channels respectively, each of the high-voltage parameter adjustment modules is used to: determine the secondary current setting values ​​of the four electric fields of the current channel corresponding to the current boiler load value according to the correspondence between the preset boiler load value and the secondary current setting values ​​of each electric field; wherein the correspondence between the boiler load value and the secondary current setting values ​​of each electric field includes: as the boiler load value increases, the secondary current setting value of the same electric field does not decrease; and under the same boiler load value, the secondary current setting values ​​of the four electric fields arranged according to the flue gas flow direction in the same channel do not increase; and, according to the determined secondary current setting values ​​of the four electric fields of the current channel, adjust the high-voltage parameter setting values ​​of the four electric fields of the current channel so that the actual values ​​of the secondary currents of the four electric fields of the current channel tend to the determined secondary current setting values ​​of the four electric fields of the current channel;

[0021] A monitoring unit, wherein the monitoring unit comprises secondary voltage monitoring modules corresponding to different channels respectively, and each of the secondary voltage monitoring modules is used to output information characterizing abnormal operation of the electric field of the current channel when it is monitored that the actual value of the secondary voltage of any electric field of the current channel is not higher than a preset secondary voltage limit value.

[0022] In a possible implementation, the four channels are respectively provided with corresponding automatic throw-in and throw-out switches for realizing separate control of each channel;

[0023] The process of the secondary voltage monitoring module outputting information characterizing abnormal operation of the electric field of the current channel when the secondary voltage value of any electric field of the current channel is monitored to be not higher than the preset secondary voltage limit value includes:

[0024] When it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, a control instruction is output to the automatic on / off switch of the current channel, and the control instruction is used to turn off the automatic on / off switch of the current channel to stop automatically adjusting the high-voltage parameter setting values ​​of the four electric fields of the current channel according to the current load value of the boiler.

[0025] In a possible implementation, the process in which the secondary voltage monitoring module outputs information characterizing abnormal operation of the electric field of the current channel when the secondary voltage value of any electric field of the current channel is monitored to be not higher than a preset secondary voltage limit value, further includes:

[0026] Output instruction information to the operation and maintenance personnel of the dual-chamber four-field electrostatic precipitator, wherein the instruction information is used to instruct manual control of the high-voltage parameter setting values ​​of the four electric fields of the current channel.

[0027] The third aspect of the present application provides a double-chamber four-electric field electrostatic precipitator in a boiler dust collection system of an electrostatic precipitator control device, wherein the double-chamber four-electric field electrostatic precipitator is used to perform dust removal treatment on flue gas generated by a single boiler unit, and the double-chamber four-electric field electrostatic precipitator includes four channels, each channel includes four electric fields arranged according to the direction of flue gas flow, and the device includes at least one processor and a memory connected to the processor, wherein:

[0028] The memory is used to store computer programs;

[0029] The processor is used to execute the computer program to implement the electrostatic precipitator control method of the above-mentioned first aspect or any implementation method of the first aspect.

[0030] A fourth aspect of the present application provides a storage medium carrying one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement the electrostatic precipitator control method of the above-mentioned first aspect or any implementation of the first aspect.

[0031] A fifth aspect of the present application provides a computer program product, comprising computer-readable instructions, which, when executed on an electronic device, can enable the electronic device to implement the electrostatic precipitator control method of the first aspect or any implementation of the first aspect.

[0032] By means of the above technical scheme, the electrostatic precipitator control method provided by the present application can be applied to a double-chamber four-electric-field electrostatic precipitator in a boiler dust collection system for dust removal of flue gas generated by a single boiler unit. The double-chamber four-electric-field electrostatic precipitator includes four channels, and each channel includes four electric fields arranged according to the direction of flue gas flow. Specifically, the control method of each channel may include: first, obtaining the current boiler load value of the boiler; and then, according to the correspondence between the boiler load value and the secondary current setting value of each electric field, determining the secondary current setting value of the four electric fields of the current channel corresponding to the current boiler load value, wherein the corresponding relationship includes: as the boiler load value increases, the secondary current setting value of the same electric field does not decrease, and under the same boiler load value, the secondary current setting value of the four electric fields arranged according to the direction of flue gas flow in the same channel does not increase; and then determining The secondary current setting values ​​of the four electric fields of the current channel are obtained, and the high-voltage parameter setting values ​​of the four electric fields of the current channel are adjusted. Based on this, the high-voltage parameter setting values ​​can be automatically adjusted up under high-load conditions to achieve a good dust collection effect, and the high-voltage parameter setting values ​​can be automatically adjusted down under low-load conditions to achieve the effect of automatic voltage reduction and energy saving, thereby realizing the task of automatically adjusting the high-voltage electric field parameters according to the real-time load, realizing the timely tracking of the smoke output of the boiler, and saving human resources; and, when it is monitored that the actual value of the secondary voltage of any electric field of the current channel is not higher than the secondary voltage limit, the information representing the abnormal operation of the electric field of the current channel is output. Based on this, the operation and maintenance personnel or other control modules can promptly know the situation that the secondary voltage of any electric field is low, which provides a basis for taking corresponding measures to ensure the normal dust collection effect of each channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0034] Figure 1 A schematic diagram of a flow chart of an electrostatic precipitator control method provided in this application;

[0035] Figure 2 A control logic schematic diagram of a secondary current setting value is shown;

[0036] Figure 3 A schematic diagram of the structure of an electrostatic precipitator control device provided in this application;

[0037] Figure 4 A schematic diagram of the structure of an electrostatic precipitator control device provided in this application. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application. The terms used in the implementation mode of the present application are only used to explain the specific embodiments of the present application, and are not intended to limit the present application. It is known to those of ordinary skill in the art that with the development of technology and the emergence of new scenarios, the technical solutions provided in the embodiments of the present application are also applicable to similar technical problems.

[0039] The present application provides an electrostatic precipitator control method and related devices, which can realize the task of automatically controlling the electrostatic precipitator according to the flue gas output of the boiler.

[0040] The electrostatic precipitator control scheme provided in the embodiment of the present application can be applied to the double-chamber four-field electrostatic precipitator in the boiler dust collection system, and the double-chamber four-field electrostatic precipitator is used to remove dust from the flue gas generated by a single boiler unit. The double-chamber four-field electrostatic precipitator includes two electrostatic precipitators, and each electrostatic precipitator includes two channels, that is, the double-chamber four-field electrostatic precipitator includes four channels, and each channel includes four electric fields arranged according to the direction of flue gas flow, which can be expressed as 1 electric field, 2 electric field, 3 electric field and 4 electric field, wherein the electric field close to the flue gas inlet bears a greater dust collection pressure; and each electric field has an independent high-voltage power supply. It should be noted that the control object of the present application, that is, the high-voltage electric field parameters of each electric field, can specifically include secondary current and secondary voltage, that is, the DC current and DC voltage output by the rectifier transformer. Optionally, the boiler dust collection system can be a dust collection system suitable for a boiler coal-fired power station.

[0041] Figure 1 1 is a flow chart of a control method for an electrostatic precipitator according to an embodiment of the present application, which shows the control flow of each channel. Figure 1 As shown, the control method for each channel may include the following steps:

[0042] Step S101: Obtain the current boiler load value of the boiler.

[0043] It should be noted that the boiler load is positively correlated with the flue gas output of the boiler. The larger the boiler load value, the more flue gas is produced and the greater the dust removal demand.

[0044] Step S102: Determine the secondary current setting values ​​of the four electric fields of the current channel corresponding to the current boiler load value according to the correspondence between the preset boiler load value and the secondary current setting value of each electric field.

[0045] Among them, the correspondence between the boiler load value and the secondary current setting value of each electric field may include: as the boiler load value increases, the secondary current setting value of the same electric field does not decrease; and under the same boiler load value, the secondary current setting values ​​of the four electric fields arranged along the flue gas flow direction in the same channel do not increase. In other words, the secondary current setting values ​​of each electric field in the current channel increase or remain unchanged as the boiler load increases, and the secondary current setting values ​​of the four electric fields arranged along the flue gas flow direction in the current channel decrease or remain unchanged.

[0046] Step S103, according to the determined secondary current setting values ​​of the four electric fields of the current channel, adjust the high-voltage parameter setting values ​​of the four electric fields of the current channel so that the actual values ​​of the secondary currents of the four electric fields of the current channel tend to the determined secondary current setting values ​​of the four electric fields of the current channel.

[0047] Based on this, by adjusting the high-voltage parameter setting values ​​of the four electric fields of the current channel according to the above-mentioned corresponding relationship, the high-voltage parameter setting value can be adjusted higher under high-load conditions to achieve a good dust collection effect, and the high-voltage parameter setting value can be adjusted lower under low-load conditions to achieve the effect of automatic voltage reduction and energy saving, ultimately achieving the purpose of balancing the dust collection demand under different loads and the dust removal energy consumption of the boiler.

[0048] Step S104: when it is monitored that the actual value of the secondary voltage of any electric field of the current channel is not higher than the preset secondary voltage limit, output information indicating abnormal operation of the electric field of the current channel.

[0049] In some embodiments provided in the present application, the secondary voltage limit may be: a secondary voltage value that is a preset value higher than the enabling voltage of the electric field of the dual-chamber four-field electrostatic precipitator.

[0050] Among them, the enabling voltage is the secondary voltage value that enables the dual-chamber four-field electrostatic precipitator to start working, and the secondary voltage limit is higher than the enabling voltage by a certain limit. Exemplarily, the enabling voltage of the dual-chamber four-field electrostatic precipitator configured in the 330MW boiler unit is about 25kV. In order to ensure that all levels of the electric field in the current channel are put into operation normally, the preset value can be set to 10kV, in which case, the above-mentioned secondary voltage limit can be set to 35kV. It should be noted that the preset value and the secondary voltage limit are not unique, and can be set according to the application scenario of the electrostatic precipitator, such as setting the preset value to a value within 10kV-15kV.

[0051] The above scheme automatically controls the high-voltage electric field parameters of each electric field in each channel according to the boiler load, and monitors the secondary voltage of each electric field in each channel. When the secondary voltage of any electric field is not higher than the preset secondary voltage limit, information representing abnormal operation of the electric field is output, so that operation and maintenance personnel or other control modules can be informed in time of the low secondary voltage of any electric field, which provides a basis for taking corresponding measures to ensure the normal dust collection effect of the electrostatic precipitator in each channel.

[0052] For example, a single 330MW boiler unit can be equipped with two double-chamber four-field electrostatic precipitators, which can be represented as #1 precipitator and #2 precipitator. Each electrostatic precipitator includes two chambers, which can be represented as a left chamber and a right chamber, or can be called a left channel and a right channel, that is, the application scenario can include #1 left, #1 right, #2 left and #2 right, a total of four channels; each channel includes four electric fields, and in a channel, along the direction of the flue gas flow, the four electric fields of the channel can be called 1 electric field, 2 electric field, 3 electric field and 4 electric field. In this scenario, the electrostatic precipitator control scheme provided in this implementation can be applied to perform the above control process on the four channels respectively.

[0053] In one or more embodiments provided in the present application, the four channels are respectively provided with corresponding automatic throw-in / out switches for realizing individual control of each channel.

[0054] On the basis of the above, step S104, when it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, outputting information characterizing the abnormal operation of the electric field of the current channel may include:

[0055] When it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, a control instruction is output to the automatic on / off switch of the current channel, and the control instruction is used to turn off the automatic on / off switch of the current channel to stop automatically adjusting the high-voltage parameter setting values ​​of the four electric fields of the current channel according to the current load value of the boiler.

[0056] It should be noted that after the automatic throw-in / out switch of a channel is turned off, the automatic adjustment of the high-voltage electric field parameters by tracking the load changes is stopped, that is, the execution of steps S101-S103 for the channel is stopped to avoid further decrease in the secondary voltage. Subsequently, when it is detected that the secondary voltage values ​​of the four electric fields of the channel in which the automatic throw-in / out switch is in the off state are all higher than the preset secondary voltage limit, an instruction for turning on the switch is output to the automatic throw-in / out switch of the channel, and steps S101-S103 are restarted for the channel to achieve the task of automatically tracking the load changes and adjusting the high-voltage electric field parameters of the channel.

[0057] The above scheme sets the secondary voltage values ​​of all electric fields in the same channel higher than the preset secondary voltage limit as the basis for automatic activation of the electrostatic precipitator. This can avoid the situation where the dust collection effect of a certain channel is reduced due to the electric field parameters of the channel being too low during the automatic adjustment process. This can ensure to a certain extent that all levels of electric fields in the same channel are put into normal operation, improve the reliability of automatic control of the electrostatic precipitator, and thus provide a basis for ensuring the normal operation of the boiler unit.

[0058] In one or more embodiments provided in the present application, step S104, when it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, outputting information characterizing the abnormal operation of the electric field of the current channel, may also include:

[0059] Output instruction information to the operation and maintenance personnel of the dual-chamber four-field electrostatic precipitator.

[0060] The indication information is used to instruct manual control of the high-voltage parameter setting values ​​of the four electric fields of the current channel, that is, to switch the control mode of the current channel from automatic adjustment to manual control modes such as spark tracking.

[0061] In one or more embodiments provided in the present application, the correspondence between the boiler load value and the secondary current setting value of each electric field includes: multiple boiler load ranges and secondary current arrays corresponding to each of the multiple boiler load ranges, each secondary current array including the secondary current setting values ​​of four electric fields arranged according to the flue gas flow direction.

[0062] It should be noted that as the number of boiler load ranges in the corresponding relationship increases, the granularity of adjusting the high-voltage electric field parameters decreases, which helps to achieve the purpose of fine control of the electrostatic precipitator; as the number of boiler load ranges in the corresponding relationship decreases, the control logic of the high-voltage electric field parameters is simplified, frequent parameter adjustments can be avoided, thereby reducing the possibility of errors and helping to improve the reliability of automatic control. Based on this, the number of boiler load ranges in the corresponding relationship can be set according to actual conditions.

[0063] Exemplarily, Table 1 shows the correspondence of a dual-chamber four-field electrostatic precipitator configured in a 330MW combustion unit, wherein the secondary current setting values ​​(in mA) of each level of the electric field corresponding to four different load ranges (in MW) are shown.

[0064] Table 1

[0065]

[0066] When the secondary voltages of all electric fields in the current channel (such as #1 left 1 electric field, #1 left 2 electric field, #1 left 3 electric field and #1 left 4 electric field) are higher than the secondary voltage limit (such as 35kV), based on steps S101-S103 provided in the embodiment of the present application, the high-voltage parameter setting values ​​of each electric field in the current channel can be automatically adjusted according to the secondary current array corresponding to the load range described by the current boiler load value; if the secondary voltage of any electric field in the current channel is not higher than the secondary voltage limit, based on step S104 provided in the embodiment of the present application, the automatic adjustment of the high-voltage electric field parameters of the current channel is stopped, the high-voltage electric field parameters of the channel are temporarily kept unchanged, and wait for manual adjustment.

[0067] Assuming that the corresponding relationship includes four load ranges defined by at least three load values, which are respectively represented as the first load range [0, first load value), the second load range [first load value, second load value], the third load range (second load value, third load value) and the fourth load range [third load value, ∞), in actual application, the fourth load value greater than the maximum value of the boiler load can be used to replace infinity ∞. On this basis, Figure 2 Taking a single electric field as an example, a control logic diagram of a secondary current setting value is shown. Figure 2As shown, the current boiler load value obtained is used as the initial input signal and input to the X pins of the first high and low limit alarm module and the second high and low limit alarm module (expressed as HLALM_1 and HLALM_2). The H pin of the HLALM_1 module inputs the second load value, and the L pin of the HLALM_1 module inputs the first load value, that is, the high limit of the HLALM_1 module is the second load value, and the low limit is the first load value. When the current boiler load value exceeds or is lower than the first load value, the D2 pin of the HLALM_1 module outputs the lower limit alarm indication, that is, D2=1. When the current boiler load value exceeds or is higher than the second load value, the D1 pin of the HLALM_1 module outputs the higher limit alarm indication, that is, D1=1. The H pin of the HLALM2 module inputs the fourth load value, and the L pin of the HLALM_2 module inputs the third load value, that is, the upper limit of the HLALM_2 module is the fourth load value, and the lower limit is the third load value. When the current boiler load value exceeds or falls below the third load value, the D2 pin of the HLALM_2 module outputs a lower limit alarm indication, that is, D2=1. Since the fourth load value is greater than the maximum boiler load value, there is no situation where the current boiler load value exceeds or falls above the fourth load value. The D2 pin of the HLALM_1 module is connected to the selection switch Z pin of the first analog quantity selection module (expressed as AXSEL_1). The X1 pin of the AXSEL_1 module inputs the secondary current setting value corresponding to the first load range, and the X2 pin of the AXSEL_1 module inputs the secondary current setting value corresponding to the fourth load range. When Z=0 of the AXSEL_1 module, Y=X2 of the AXSEL_1 module, and when Z=1 of the AXSEL_1 module, Y=X1 of the AXSEL_1 module. The D1 pin and D2 pin of the HLALM_1 module are respectively input to the Z1 pin and Z2 pin of the first AND module (represented as AND_1) after being negated, and the D pin of the AND_1 module inputs Z1 AND Z2 to the selection switch Z pin of the second analog quantity selection module (represented as AXSEL_2), the Y pin of the AXSEL_1 module is connected to the X2 pin of the AXSEL_2 module, and the X1 pin of the AXSEL_2 module inputs the secondary current setting value corresponding to the second load range. The D1 pin of the HLALM_1 module and the D2 pin of the HLALM_2 module are respectively input to the Z1 pin and Z2 pin of the second AND module (denoted as AND_2), and the D pin of the AND_2 module inputs Z1 AND Z2 to the selection switch Z pin of the third analog quantity selection module (denoted as AXSEL_3). The Y pin of the AXSEL_2 module is connected to the X2 pin of the AXSEL_3 module. The X1 pin of the AXSEL_3 module inputs the secondary current setting value corresponding to the third load range, and the Y pin of the AXSEL_3 module outputs the secondary current setting value corresponding to the current boiler load value. In addition, Figure 2The high and low limit alarm modules HLALM_1 and HLALM_2, and the AND modules AND_1 and AND_2 shown can be multiplexed for other electric fields of the same channel to provide load matching logic for the channel.

[0068] The electrostatic precipitator control device provided in an embodiment of the present application is described below. The electrostatic precipitator control device described below and the electrostatic precipitator control method described above can be referenced to each other.

[0069] Figure 3 This is a schematic diagram of the structure of an electrostatic precipitator control device disclosed in an embodiment of the present application. The device is applied to a double-chamber four-field electrostatic precipitator in a boiler dust collection system. The double-chamber four-field electrostatic precipitator is used to remove dust from the flue gas generated by a single boiler unit. The double-chamber four-field electrostatic precipitator includes four channels, and each channel includes four electric fields arranged according to the direction of flue gas flow. Figure 3 As shown, the device may include:

[0070] A boiler load acquisition unit 31 is used to acquire a current boiler load value of the boiler;

[0071] An automatic adjustment unit 32, the automatic adjustment unit 32 includes high-voltage parameter adjustment modules corresponding to different channels respectively, each of the high-voltage parameter adjustment modules is used to: determine the secondary current setting values ​​of the four electric fields of the current channel corresponding to the current boiler load value according to the correspondence between the preset boiler load value and the secondary current setting value of each electric field; wherein the correspondence between the boiler load value and the secondary current setting value of each electric field includes: as the boiler load value increases, the secondary current setting value of the same electric field does not decrease; and under the same boiler load value, the secondary current setting values ​​of the four electric fields arranged according to the flue gas flow direction in the same channel do not increase; and, according to the determined secondary current setting values ​​of the four electric fields of the current channel, adjust the high-voltage parameter setting values ​​of the four electric fields of the current channel so that the actual values ​​of the secondary currents of the four electric fields of the current channel tend to the determined secondary current setting values ​​of the four electric fields of the current channel;

[0072] The monitoring unit 33 includes secondary voltage monitoring modules corresponding to different channels respectively, and each of the secondary voltage monitoring modules is used to: when it is monitored that the actual value of the secondary voltage of any electric field in the current channel is not higher than the preset secondary voltage limit, output information representing the abnormal operation of the electric field of the current channel.

[0073] In one or more embodiments provided in the present application, the four channels are respectively provided with corresponding automatic throw-in / out switches for realizing individual control of each channel.

[0074] On the basis of the above, the secondary voltage monitoring module outputs information characterizing abnormal operation of the electric field of the current channel when the secondary voltage value of any electric field of the current channel is monitored to be not higher than the preset secondary voltage limit, including:

[0075] When it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, a control instruction is output to the automatic on / off switch of the current channel, and the control instruction is used to turn off the automatic on / off switch of the current channel to stop automatically adjusting the high-voltage parameter setting values ​​of the four electric fields of the current channel according to the current load value of the boiler.

[0076] In one or more embodiments provided in the present application, the process in which the secondary voltage monitoring module outputs information characterizing abnormal operation of the electric field of the current channel when the secondary voltage value of any electric field of the current channel is monitored to be not higher than a preset secondary voltage limit value, further includes:

[0077] Output instruction information to the operation and maintenance personnel of the dual-chamber four-field electrostatic precipitator, wherein the instruction information is used to instruct manual control of the high-voltage parameter setting values ​​of the four electric fields of the current channel.

[0078] In one or more embodiments provided in the present application, the secondary voltage limit is a secondary voltage value that is a preset value higher than the enabling voltage of the electric field of the dual-chamber four-field electrostatic precipitator, and the enabling voltage is a secondary voltage value that enables the dual-chamber four-field electrostatic precipitator to start working.

[0079] In one or more embodiments provided in the present application, the correspondence between the boiler load value and the secondary current setting value of each electric field includes: multiple boiler load ranges and secondary current arrays corresponding to each of the multiple boiler load ranges, each secondary current array including the secondary current setting values ​​of four electric fields arranged according to the flue gas flow direction.

[0080] The electrostatic precipitator control device provided in the embodiment of the present application can be applied to electrostatic precipitator control equipment, such as a terminal with data processing capability: a computer, etc. Optionally, Figure 4 The hardware structure diagram of the electrostatic precipitator control device is shown in FIG. Figure 4 , the hardware structure of the electrostatic precipitator control device may include: at least one processor 1, at least one communication interface 2, at least one memory 3 and at least one communication bus 4;

[0081] In the embodiment of the present application, the number of the processor 1, the communication interface 2, the memory 3, and the communication bus 4 is at least one, and the processor 1, the communication interface 2, and the memory 3 communicate with each other through the communication bus 4;

[0082] The processor 1 may be a central processing unit CPU, or an application-specific integrated circuit ASIC (Application Specific Integrated Circuit), or one or more integrated circuits configured to implement the embodiments of the present invention, etc.;

[0083] The memory 3 may include a high-speed RAM memory, and may also include a non-volatile memory (non-volatile memory), etc., such as at least one disk memory;

[0084] The memory is used to store a computer program, and the processor is used to execute the computer program. The computer program is used to: perform the following steps for each channel:

[0085] Obtaining a current boiler load value of the boiler;

[0086] According to the correspondence between the preset boiler load value and the secondary current setting value of each electric field, the secondary current setting values ​​of the four electric fields of the current channel corresponding to the current boiler load value are determined; wherein the correspondence between the boiler load value and the secondary current setting value of each electric field includes: as the boiler load value increases, the secondary current setting value of the same electric field does not decrease; and under the same boiler load value, the secondary current setting values ​​of the four electric fields arranged according to the flue gas flow direction in the same channel do not increase;

[0087] According to the determined secondary current setting values ​​of the four electric fields of the current channel, the high voltage parameter setting values ​​of the four electric fields of the current channel are adjusted so that the actual values ​​of the secondary currents of the four electric fields of the current channel tend to the determined secondary current setting values ​​of the four electric fields of the current channel;

[0088] When it is monitored that the actual value of the secondary voltage of any electric field in the current channel is not higher than the preset secondary voltage limit, information characterizing the abnormal operation of the electric field in the current channel is output so that the electrostatic precipitator control device can implement the above-mentioned electrostatic precipitator control method.

[0089] Optionally, the detailed functions and extended functions of the computer program may refer to the above description.

[0090] A storage medium is also provided in an embodiment of the present application. The storage medium carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement any electrostatic precipitator control method provided in the embodiment of the present application.

[0091] An embodiment of the present application also provides a computer program product, including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements any electrostatic precipitator control method provided in the embodiment of the present application.

[0092] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity from another entity, and do not necessarily require or imply any such actual relationship or order between these entities. Moreover, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0093] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The various embodiments can be combined as needed, and the same or similar parts can refer to each other.

[0094] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for controlling an electrostatic precipitator, It is characterized in that A double-chamber four-field electrostatic precipitator applied to a boiler dust collection system, the double-chamber four-field electrostatic precipitator is used to remove dust from flue gas generated by a single boiler unit, the double-chamber four-field electrostatic precipitator includes four channels, each channel includes four electric fields arranged according to the direction of flue gas flow, and the control method of each channel includes: Obtaining a current boiler load value of the boiler; According to the correspondence between the preset boiler load value and the secondary current setting value of each electric field, the secondary current setting values ​​of the four electric fields of the current channel corresponding to the current boiler load value are determined; wherein the correspondence between the boiler load value and the secondary current setting value of each electric field includes: as the boiler load value increases, the secondary current setting value of the same electric field does not decrease; and under the same boiler load value, the secondary current setting values ​​of the four electric fields arranged according to the flue gas flow direction in the same channel do not increase; According to the determined secondary current setting values ​​of the four electric fields of the current channel, the high voltage parameter setting values ​​of the four electric fields of the current channel are adjusted so that the actual values ​​of the secondary currents of the four electric fields of the current channel tend to the determined secondary current setting values ​​of the four electric fields of the current channel; When it is monitored that the actual value of the secondary voltage of any electric field of the current channel is not higher than the preset secondary voltage limit value, information indicating abnormal operation of the electric field of the current channel is output.

2. The electrostatic precipitator control method according to claim 1, It is characterized in that The four channels are respectively provided with corresponding automatic throw-in and throw-out switches for realizing individual control of each channel; When it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, information indicating abnormal operation of the electric field of the current channel is output, including: When it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, a control instruction is output to the automatic on / off switch of the current channel, and the control instruction is used to turn off the automatic on / off switch of the current channel to stop automatically adjusting the high-voltage parameter setting values ​​of the four electric fields of the current channel according to the current load value of the boiler.

3. The electrostatic precipitator control method according to claim 2, It is characterized in that When it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, outputting information indicating abnormal operation of the electric field of the current channel, further comprising: Output instruction information to the operation and maintenance personnel of the dual-chamber four-field electrostatic precipitator, wherein the instruction information is used to instruct manual control of the high-voltage parameter setting values ​​of the four electric fields of the current channel.

4. The electrostatic precipitator control method according to any one of claims 1 to 3, It is characterized in that The secondary voltage limit is a secondary voltage value that is a preset value higher than the activation voltage of the electric field of the dual-chamber four-field electrostatic precipitator, and the activation voltage is a secondary voltage value that enables the dual-chamber four-field electrostatic precipitator to start working.

5. The electrostatic precipitator control method according to claim 4, It is characterized in that The correspondence between the boiler load value and the secondary current setting value of each electric field includes: multiple boiler load ranges and secondary current arrays corresponding to the multiple boiler load ranges, each secondary current array includes the secondary current setting values ​​of four electric fields arranged according to the flue gas flow direction.

6. An electrostatic precipitator control device, It is characterized in that A double-chamber four-electric field electrostatic precipitator applied to a boiler dust collection system, wherein the double-chamber four-electric field electrostatic precipitator is used to remove dust from flue gas generated by a single boiler unit, and the double-chamber four-electric field electrostatic precipitator comprises four channels, each of which comprises four electric fields arranged according to the direction of flue gas flow; The device includes: A boiler load acquisition unit, used to acquire a current boiler load value of the boiler; An automatic adjustment unit, the automatic adjustment unit includes high-voltage parameter adjustment modules corresponding to different channels respectively, each of the high-voltage parameter adjustment modules is used to: determine the secondary current setting values ​​of the four electric fields of the current channel corresponding to the current boiler load value according to the correspondence between the preset boiler load value and the secondary current setting values ​​of each electric field; wherein the correspondence between the boiler load value and the secondary current setting values ​​of each electric field includes: as the boiler load value increases, the secondary current setting value of the same electric field does not decrease; and under the same boiler load value, the secondary current setting values ​​of the four electric fields arranged according to the flue gas flow direction in the same channel do not increase; and, according to the determined secondary current setting values ​​of the four electric fields of the current channel, adjust the high-voltage parameter setting values ​​of the four electric fields of the current channel so that the actual values ​​of the secondary currents of the four electric fields of the current channel tend to the determined secondary current setting values ​​of the four electric fields of the current channel; A monitoring unit, wherein the monitoring unit comprises secondary voltage monitoring modules corresponding to different channels respectively, and each of the secondary voltage monitoring modules is used to output information characterizing abnormal operation of the electric field of the current channel when it is monitored that the actual value of the secondary voltage of any electric field of the current channel is not higher than a preset secondary voltage limit value.

7. The electrostatic precipitator control device according to claim 6, It is characterized in that The four channels are respectively provided with corresponding automatic throw-in and throw-out switches for realizing individual control of each channel; The process of the secondary voltage monitoring module outputting information characterizing abnormal operation of the electric field of the current channel when the secondary voltage value of any electric field of the current channel is monitored to be not higher than the preset secondary voltage limit value includes: When it is monitored that the secondary voltage value of any electric field of the current channel is not higher than the preset secondary voltage limit value, a control instruction is output to the automatic on / off switch of the current channel, and the control instruction is used to turn off the automatic on / off switch of the current channel to stop automatically adjusting the high-voltage parameter setting values ​​of the four electric fields of the current channel according to the current load value of the boiler.

8. An electrostatic precipitator control device, It is characterized in that A double-chamber four-electric field electrostatic precipitator applied to a boiler dust collection system, the double-chamber four-electric field electrostatic precipitator is used to remove dust from flue gas generated by a single boiler unit, the double-chamber four-electric field electrostatic precipitator includes four channels, each channel includes four electric fields arranged according to the direction of flue gas flow, the device includes at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is used to execute the computer program so that the electrostatic precipitator control device can implement the electrostatic precipitator control method according to any one of claims 1 to 5.

9. A storage medium, It is characterized in that The storage medium carries one or more computer programs, which, when executed by an electronic device, enable the electronic device to implement the electrostatic precipitator control method as described in any one of claims 1 to 5.

10. A computer program product, It is characterized in that It comprises computer-readable instructions, which, when executed on an electronic device, enable the electronic device to implement the electrostatic precipitator control method as claimed in any one of claims 1 to 5.

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