阅读说明：本技术 电除尘器高频电压控制方法及装置 (High-frequency voltage control method and device for electric dust collector ) 是由 张永祥 程亮 张清峰 于 2019-10-28 设计创作，主要内容包括：本发明提供了一种电除尘器高频电压控制方法及装置。所述方法包括：获取不同煤种对应的基灰分及机组运行煤量值；根据所述基灰分及所述机组运行煤量值,确定在预设时间内,不同负荷下对应的燃煤量及对应的产灰总量；根据所述产灰总量,以及机组电厂内各电厂区域所占的灰量比例,确定各电厂区域对应的电压需求量；根据所述电压需求量,控制电除尘器释放对应等级的高压。本发明通过利用在不同负荷下煤量对应灰量的积分,确定进入不同电厂内灰的含量,以确定电除尘器不同电厂电压等级,保障系统安全下达到节能降耗的目的,在保证除尘效果良好的同时,节约大量能源,并且大大降低设备损坏程度。(The invention provides a high-frequency voltage control method and device for an electric dust collector. The method comprises the following steps: acquiring base ash contents and unit operation coal quantity values corresponding to different coal types; determining corresponding coal burning quantity and corresponding total ash production quantity under different loads within preset time according to the base ash content and the unit operation coal quantity value; determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant; and controlling the electric dust collector to release high voltage of a corresponding grade according to the voltage demand. According to the invention, the content of the ash entering different power plants is determined by utilizing the integral of the coal quantity corresponding to the ash quantity under different loads so as to determine the voltage levels of the electric dust remover in different power plants, thereby achieving the purposes of saving energy and reducing consumption under the condition of ensuring the system safety, saving a large amount of energy and greatly reducing the damage degree of equipment while ensuring the good dust removal effect.)

1. A high-frequency voltage control method for an electric dust collector is characterized by comprising the following steps:

acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

determining corresponding coal burning quantity and corresponding total ash production quantity under different loads within preset time according to the base ash content and the unit operation coal quantity value;

determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant;

and controlling the electric dust collector to release high voltage of a corresponding grade according to the voltage demand.

2. The method of claim 1, wherein determining the corresponding amount of coal fired and the corresponding total amount of ash produced at different loads within a predetermined time based on the base ash content and the unit operating coal quantity value comprises:

determining the corresponding coal burning amount under different loads within a preset time through integral operation according to the unit operation coal amount value;

and determining the corresponding total ash production amount according to the coal burning amount and the base ash content.

3. The method of claim 1, wherein determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount ratio occupied by each power plant area in the unit power plant comprises:

determining the ash amount proportion occupied by each power plant area according to the ash amount passing through each power plant area in the unit power plant;

and obtaining the total ash amount corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area, and determining the voltage demand amount corresponding to the total ash amount.

4. The method of claim 3, wherein the determining the voltage demand for the total ash amount comprises: and determining the voltage demand corresponding to the total ash amount by utilizing the relation between the preset ash amount and the voltage demand.

5. An electric dust collector high-frequency voltage control device, which is characterized by comprising:

the data acquisition module is used for acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

the ash production total amount module is used for determining the corresponding coal burning amount and the corresponding ash production total amount under different loads within preset time according to the base ash content and the unit operation coal amount value;

the voltage demand module is used for determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant;

and the voltage grade module is used for controlling the electric dust collector to release high voltage of corresponding grade according to the voltage demand.

6. The apparatus of claim 5, wherein the data acquisition module comprises:

the coal burning quantity unit is used for determining the corresponding coal burning quantity under different loads within the preset time through integral operation according to the unit operation coal quantity value;

and the ash production total amount unit is used for determining the corresponding ash production total amount according to the coal burning amount and the base ash content.

7. The apparatus of claim 5, wherein the voltage demand module comprises:

the ash amount proportion unit is used for determining the ash amount proportion occupied by each power plant area according to the ash amount passing through each power plant area in the unit power plant;

and the voltage demand unit is used for obtaining the total ash amount corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area, and determining the voltage demand corresponding to the total ash amount.

8. The apparatus of claim 7, wherein the voltage demand unit comprises: and the voltage demand quantum unit is used for determining the voltage demand corresponding to the total ash amount by utilizing the relation between the preset ash amount and the voltage demand.

9. A computer device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the computer program implements the steps of:

acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

determining corresponding coal burning quantity and corresponding total ash production quantity under different loads within preset time according to the base ash content and the unit operation coal quantity value;

determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant;

and controlling the electric dust collector to release high voltage of a corresponding grade according to the voltage demand.

10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the steps of:

acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

determining corresponding coal burning quantity and corresponding total ash production quantity under different loads within preset time according to the base ash content and the unit operation coal quantity value;

determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant;

and controlling the electric dust collector to release high voltage of a corresponding grade according to the voltage demand.

Technical Field

The invention relates to the technical field of electric dust collectors, in particular to a high-frequency voltage control method and device of an electric dust collector.

Background

At present, the requirements on environmental protection parameters of power station boilers are higher and higher, and the requirements on the operational availability of corresponding dust removal equipment are also gradually improved. The high-voltage discharge voltage of the electric dust removal system is a crucial parameter. For the discharge voltage of electric dust removal of utility boilers, the discharge voltage is often set to a certain fixed value or manually adjusted at present. When the power station boiler operates, the problem that the load of a unit is constantly changed exists, the dust removal effect is good due to overhigh voltage, a large amount of energy is wasted, and the damage degree of equipment is large. The dust removal effect cannot be achieved due to too low voltage, and the smoke dust emission at the outlet of the dust remover exceeds the standard.

Therefore, setting the voltage level to a fixed value under different loads can cause problems of poor dust removal effect, waste of a large amount of energy, increase of equipment damage degree, and the like.

Disclosure of Invention

In order to solve the above problems, an embodiment of the present invention provides a method for controlling a high-frequency voltage of an electric precipitator, where the method includes:

acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

determining corresponding coal burning quantity and corresponding total ash production quantity under different loads within preset time according to the base ash content and the unit operation coal quantity value;

determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant;

and controlling the electric dust collector to release high voltage of a corresponding grade according to the voltage demand.

Optionally, in an embodiment of the present invention, the determining, according to the base ash content and the unit operation coal quantity value, the corresponding coal quantity and the corresponding total ash production amount under different loads in a preset time includes: determining the corresponding coal burning amount under different loads within a preset time through integral operation according to the unit operation coal amount value; and determining the corresponding total ash production amount according to the coal burning amount and the base ash content.

Optionally, in an embodiment of the present invention, the determining, according to the total ash production amount and an ash amount ratio occupied by each power plant area in the unit power plant, a voltage demand amount corresponding to each power plant area includes: determining the ash amount proportion occupied by each power plant area according to the ash amount passing through each power plant area in the unit power plant; and obtaining the total ash amount corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area, and determining the voltage demand amount corresponding to the total ash amount.

Optionally, in an embodiment of the present invention, the determining the voltage demand corresponding to the total ash amount includes: and determining the voltage demand corresponding to the total ash amount by utilizing the relation between the preset ash amount and the voltage demand.

The embodiment of the invention also provides a high-frequency voltage control device of the electric dust collector, which comprises:

the data acquisition module is used for acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

the ash production total amount module is used for determining the corresponding coal burning amount and the corresponding ash production total amount under different loads within preset time according to the base ash content and the unit operation coal amount value;

the voltage demand module is used for determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant;

and the voltage grade module is used for controlling the electric dust collector to release high voltage of corresponding grade according to the voltage demand.

Optionally, in an embodiment of the present invention, the data obtaining module includes: the coal burning quantity unit is used for determining the corresponding coal burning quantity under different loads within the preset time through integral operation according to the unit operation coal quantity value; and the ash production total amount unit is used for determining the corresponding ash production total amount according to the coal burning amount and the base ash content.

Optionally, in an embodiment of the present invention, the voltage demand module includes: the ash amount proportion unit is used for determining the ash amount proportion occupied by each power plant area according to the ash amount passing through each power plant area in the unit power plant; and the voltage demand unit is used for obtaining the total ash amount corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area, and determining the voltage demand corresponding to the total ash amount.

Optionally, in an embodiment of the present invention, the voltage demand unit includes: and the voltage demand quantum unit is used for determining the voltage demand corresponding to the total ash amount by utilizing the relation between the preset ash amount and the voltage demand.

The embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the following steps are implemented:

acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

determining corresponding coal burning quantity and corresponding total ash production quantity under different loads within preset time according to the base ash content and the unit operation coal quantity value;

determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant;

and controlling the electric dust collector to release high voltage of a corresponding grade according to the voltage demand.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the following steps:

acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

determining corresponding coal burning quantity and corresponding total ash production quantity under different loads within preset time according to the base ash content and the unit operation coal quantity value;

determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant;

and controlling the electric dust collector to release high voltage of a corresponding grade according to the voltage demand.

According to the invention, the content of the ash entering different power plants is determined by utilizing the integral of the coal quantity corresponding to the ash quantity under different loads so as to determine the voltage levels of the electric dust remover in different power plants, thereby achieving the purposes of saving energy and reducing consumption under the condition of ensuring the system safety, saving a large amount of energy and greatly reducing the damage degree of equipment while ensuring the good dust removal effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.

FIG. 1 is a flow chart of a method for controlling the high-frequency voltage of an electric precipitator according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a high-frequency voltage control device of an electric dust collector according to an embodiment of the present invention.

Detailed Description

The embodiment of the invention provides a high-frequency voltage control method and device for an electric dust collector.

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments 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.

Fig. 1 is a flowchart of a method for controlling high-frequency voltage of an electric precipitator according to an embodiment of the present invention, where the method includes:

and step S1, obtaining base ash content and unit operation coal quantity values corresponding to different coal types. Because the ash content generated after the coal types of different types are fully combusted is different, the ash content obtained by fully combusting a certain amount of coal within a certain time can be calculated by utilizing the corresponding base ash content of different coal types. A plurality of different power plant areas are arranged in the unit, the unit operation coal quantity value refers to the coal quantity required by the corresponding combustion of the whole unit under different loads within a certain time, and the whole unit is also called DCS parameter.

And step S2, determining the corresponding coal burning quantity and the corresponding total ash production quantity under different loads within a preset time according to the base ash content and the unit operation coal quantity value. By utilizing the base ash content and the unit operation coal quantity value, the total coal combustion amount of the whole unit in the preset time and the total ash production amount correspondingly generated by the total coal combustion amount can be calculated.

And step S3, determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant. The ash amount passing through different power plant areas in the unit is different, and the corresponding ash amount of each power plant area can be determined according to the ash amount proportion of each power plant area and the total ash production amount of the whole unit. And determining the voltage demand corresponding to each power plant area through the corresponding relation between the preset ash amount and the voltage demand.

And step S4, controlling the electric dust collector to release high voltage of corresponding grade according to the voltage demand. And controlling the electric dust collector to release high voltage of corresponding grade according to different voltage demands of each power plant area, and finishing the control of the voltage grade of the electric dust collector.

Wherein, the process of removing dust through electrostatic precipitator does: the electrostatic dust removal air purifier ionizes gas molecules in air by utilizing a high-voltage direct-current electric field to generate a large amount of electrons and ions, the electrons and the ions move towards two poles under the action of the electric field force, dust particles and bacteria in air flow are touched to charge the charged particles, the charged particles move towards a polar plate with opposite charges under the action of the electric field force, free ions in the air move towards the two poles under the action of the electric field, and the higher the voltage is, the higher the electric field strength is, and the faster the movement speed of the ions is. After passing through a high-voltage direct-current electric field of the electric dust collector, dust is deposited, and the deposited dust is vibrated down by a rapping device.

As an embodiment of the present invention, determining, according to the base ash content and the unit operation coal quantity value, the corresponding coal-fired quantity and the corresponding total ash production quantity under different loads within a preset time includes: determining the corresponding coal burning amount under different loads within a preset time through integral operation according to the unit operation coal amount value; and determining the corresponding total ash production amount according to the coal burning amount and the base ash content.

As an embodiment of the present invention, determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount ratio occupied by each power plant area in the unit power plant includes: determining the ash amount proportion occupied by each power plant area according to the ash amount passing through each power plant area in the unit power plant; and obtaining the total ash amount corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area, and determining the voltage demand amount corresponding to the total ash amount.

As an embodiment of the present invention, determining the voltage demand corresponding to the total ash amount includes: and determining the voltage demand corresponding to the total ash amount by utilizing the relation between the preset ash amount and the voltage demand.

In a specific embodiment of the present invention, the specific process of controlling the high-frequency voltage of the electric dust collector comprises:

1) in the process of commissioning the power station boiler, the corresponding received base ash contents of different coal types can be obtained through the industrial analysis of raw coal; collecting DCS parameters: corresponding to the amount of coal required for combustion at different loads. And calculating the coal amount required under different loads within a certain time through the integral of the coal amount within a certain time. Assuming that the coal is completely burned, the total amount of ash produced is derived from the amount of coal burned;

2) according to a certain proportion, calculating voltage demands of different areas in a certain time according to ash passing through different power plant areas of the electric dust collector;

3) according to the dust deposition conditions under different loads, the primary and secondary high-voltage discharge voltages of different electric precipitators are determined, and the purpose that the high-voltage frequency of the electric precipitator achieves automatic control along with the change of the loads is achieved.

According to the invention, the content of the ash entering different power plants is determined by utilizing the integral of the coal quantity corresponding to the ash quantity under different loads so as to determine the voltage levels of the electric dust remover in different power plants, thereby achieving the purposes of saving energy and reducing consumption under the condition of ensuring the system safety, saving a large amount of energy and greatly reducing the damage degree of equipment while ensuring the good dust removal effect.

Fig. 2 is a schematic structural diagram of a high-frequency voltage control device of an electric dust collector according to an embodiment of the present invention, where the device includes:

the data acquisition module 10 is used for acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

the total ash production amount module 20 is configured to determine, according to the basic ash content and the unit operation coal quantity value, a corresponding coal burning amount and a corresponding total ash production amount under different loads within a preset time;

the voltage demand module 30 is configured to determine a voltage demand corresponding to each power plant area according to the total ash production amount and an ash amount proportion occupied by each power plant area in the unit power plant;

and the voltage grade module 40 is used for controlling the electric dust collector to release high voltage of corresponding grade according to the voltage demand.

As an embodiment of the present invention, a data acquisition module includes: the coal burning quantity unit is used for determining the corresponding coal burning quantity under different loads within the preset time through integral operation according to the unit operation coal quantity value; and the ash production total amount unit is used for determining the corresponding ash production total amount according to the coal burning amount and the base ash content.

As an embodiment of the present invention, the voltage demand module includes: the ash amount proportion unit is used for determining the ash amount proportion occupied by each power plant area according to the ash amount passing through each power plant area in the unit power plant; and the voltage demand unit is used for obtaining the total ash amount corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area, and determining the voltage demand corresponding to the total ash amount.

As an embodiment of the present invention, the voltage demand unit includes: and the voltage demand quantum unit is used for determining the voltage demand corresponding to the total ash amount by utilizing the relation between the preset ash amount and the voltage demand.

Based on the same application concept as the electric dust collector high-frequency voltage control method, the invention also provides the electric dust collector high-frequency voltage control device. Because the problem solving principle of the high-frequency voltage control device of the electric dust collector is similar to that of the high-frequency voltage control method of the electric dust collector, the implementation of the high-frequency voltage control device of the electric dust collector can refer to the implementation of the high-frequency voltage control method of the electric dust collector, and repeated parts are not repeated.

According to the invention, the content of the ash entering different power plants is determined by utilizing the integral of the coal quantity corresponding to the ash quantity under different loads so as to determine the voltage levels of the electric dust remover in different power plants, thereby achieving the purposes of saving energy and reducing consumption under the condition of ensuring the system safety, saving a large amount of energy and greatly reducing the damage degree of equipment while ensuring the good dust removal effect.

The embodiment of the present invention further provides a computer device, which includes a memory, a processor, and a computer program stored in the memory and capable of running on the processor, and when the processor executes the computer program, the following steps are implemented:

acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

determining corresponding coal burning quantity and corresponding total ash production quantity under different loads within preset time according to the base ash content and the unit operation coal quantity value;

determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant;

and controlling the electric dust collector to release high voltage of a corresponding grade according to the voltage demand.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the following steps:

acquiring base ash contents and unit operation coal quantity values corresponding to different coal types;

determining corresponding coal burning quantity and corresponding total ash production quantity under different loads within preset time according to the base ash content and the unit operation coal quantity value;

determining the voltage demand corresponding to each power plant area according to the total ash production amount and the ash amount proportion occupied by each power plant area in the unit power plant;

and controlling the electric dust collector to release high voltage of a corresponding grade according to the voltage demand.

Based on the same application concept as the high-frequency voltage control method of the electric dust collector, the invention also provides the computer equipment and the computer readable storage medium. Because the principle of solving the problems of the computer equipment and the computer-readable storage medium is similar to that of the high-frequency voltage control method of the electric dust collector, the implementation of the computer equipment and the computer-readable storage medium can refer to the implementation of the high-frequency voltage control method of the electric dust collector, and repeated parts are not repeated.

According to the invention, the content of the ash entering different power plants is determined by utilizing the integral of the coal quantity corresponding to the ash quantity under different loads so as to determine the voltage levels of the electric dust remover in different power plants, thereby achieving the purposes of saving energy and reducing consumption under the condition of ensuring the system safety, saving a large amount of energy and greatly reducing the damage degree of equipment while ensuring the good dust removal effect.

As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.

The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.