Load partition regulation and control method of central heating system

Abstract

The invention provides a load partition regulation and control method for a central heating system. The method is characterized by comprising the steps that a target demand load of a target heating area is obtained through analysis; setting a target heat source area of the target heat supply area; generating a heat source point combination according to the heat source point data of the target heat source area, and obtaining actual supply heat energy corresponding to the heat source point combination; analyzing according to the actual supply heat energy and the target demand load to obtain a to-be-selected heat source point combination corresponding to the target heat supply area; analyzing to obtain a first matching coefficient, a second matching coefficient and a comprehensive matching coefficient of the to-be-selected heat source point combination and the target heat supply area; the comprehensive matching degree of the to-be-selected heat source point combination and the target heat supply area is obtained through analysis according to the comprehensive matching coefficient and a preset matching coefficient threshold value; and a target heat source point combination of the target heat supply area is obtained according to the comprehensive matching degree, and heat supply is conducted on the target heat supply area according to heat source points in the target heat source point combination. The heat supply efficiency of the central heating system is improved.

Description

Technical Field

[0001] The present application relates to the technical field of heat supply management, and in particular to a load zoning control method for a centralized heating system. Background Art

[0002] As an efficient and environmentally friendly energy supply method, district heating plays a vital role in modern urban construction and industrial development. With the acceleration of urbanization and the continuous improvement of people's requirements for quality of life, the scale and complexity of district heating systems are also increasing. At present, district heating systems have been widely used in various places such as residential houses, commercial buildings, industrial plants, etc., providing people with comfortable indoor temperatures and stable energy supply. Therefore, reasonable load zoning control of district heating systems is not only important for ensuring stable heating, but also for ensuring regional heating quality and saving thermal energy.

[0003] The load zoning control method of the centralized heating system in the related technology is often unable to achieve reasonable load distribution to the heat source points around the heating area when a single heat source point cannot meet the required load of the heating area, resulting in a decrease in the heating efficiency of the centralized heating system and unnecessary loss of thermal energy resources. There is room for improvement. Summary of the invention

[0004] The purpose of the embodiments of the present application is to provide a load zoning control method for a centralized heating system, so as to improve the problem that the load zoning control method for a centralized heating system in the related art is often unable to achieve reasonable load distribution to the heat source points around the heating area when a single heat source point cannot meet the required load of the heating area, resulting in a decrease in the heating efficiency of the centralized heating system and unnecessary loss of thermal energy resources.

[0005] The present application provides a load zoning control method for a centralized heating system, comprising the following steps: Acquire historical load data of the target heating area, and obtain the target demand load of the target heating area based on the historical load data; Setting a target heat source area corresponding to a target heating area according to the target demand load; Acquire heat source point data of the target heat source area, and generate a heat source point combination of the target heat source area according to the heat source point data; According to the heat source point combination, the combined supply heat energy and the combined loss heat energy of the heat source point combination are obtained, and according to the combined supply heat energy and the combined loss heat energy, the actual supply heat energy corresponding to the heat source point combination is obtained; Compare and analyze the actual supplied heat energy of the heat source point combination with the target demand load of the target heating area to obtain a candidate heat source point combination corresponding to the target heating area; Obtaining a first matching coefficient between the candidate heat source point combination and the target heating area according to the actual supplied heat energy of the candidate heat source point combination and the target demand load of the target heating area; Obtaining a second matching coefficient between the candidate heat source point combination and the target heating area according to the combined loss heat energy of the candidate heat source point combination; Obtaining a comprehensive matching coefficient between the candidate heat source point combination and the target heating area according to the first matching coefficient and the second matching coefficient; Compare and analyze the comprehensive matching coefficient between the combination of the heat source points to be selected and the target heating area with a preset matching coefficient threshold to obtain the comprehensive matching degree between the combination of the heat source points to be selected and the target heating area; A target heat source point combination corresponding to the target heating area is obtained according to the comprehensive matching degree, and the target heating area is heated according to the heat source points in the target heat source point combination.

[0006] Preferably, historical load data of the target heating area is obtained, and the target demand load of the target heating area is obtained based on the analysis of the historical load data, specifically: The historical load data includes the heating load data of the target heating area during the historical heating time; Obtain the waiting heating period of the target heating area; Acquire a historical heating period corresponding to the waiting heating period in the historical heating time of the target heating area according to the waiting heating period; The historical period load data of the historical heating period is obtained, and the target demand load of the target heating area is obtained according to the historical period load data.

[0007] Preferably, the target heat source area corresponding to the target heating area is set according to the target demand load, specifically: The target heating area is marked as a marking center, and at least one radiation radius is set; Obtaining a candidate heat source area of ​​a target heating area according to the marking center and the radiation radius; Obtain the number of heat source points in the heat source area to be selected, and the heat source points supplying heat energy to the heat source points in the heat source area to be selected; According to the number of heat source points and the heat source point supply heat energy of the heat source points in the heat source area to be selected, the regional supply heat energy of the heat source area to be selected is obtained; The candidate heat source region whose heat energy supplied to the region is greater than or equal to the target demand load is marked as the target heat source region.

[0008] Preferably, the heat source point data of the target heat source area is obtained, and the heat source point combination of the target heat source area is generated according to the heat source point data, specifically: The heat source point data includes the number of heat source points in the target heat source area, the heat energy supplied by the heat source points corresponding to the heat source points, and the supply distance between the heat source points and the target heating area; The heat energy loss of the heat source point of the heat source point is obtained according to the supply distance between the heat source point and the target heating area; The heat source points in the target heat source area are randomly combined to generate a heat source point combination in the target heat source area, wherein the target heat source area contains at least one heat source point combination.

[0009] Preferably, the combined supply heat energy and the combined loss heat energy of the heat source point combination are obtained according to the heat source point combination, and the actual supply heat energy corresponding to the heat source point combination is obtained according to the combined supply heat energy and the combined loss heat energy, specifically: Accumulating and summing the heat energy supplied by the heat source points in the heat source point combination to obtain the combined heat energy supplied by the heat source point combination; Accumulating and summing the heat source point loss heat energies of the heat source points in the heat source point combination to obtain the combined loss heat energy of the heat source point combination; The difference between the combined supply heat energy and the combined loss heat energy of the heat source point combination is calculated to obtain the actual supply heat energy corresponding to the heat source point combination.

[0010] Preferably, the actual supplied heat energy of the heat source point combination is compared and analyzed with the target demand load of the target heating area to obtain the candidate heat source point combination corresponding to the target heating area, specifically: If the actual heat energy supplied by the heat source point combination is less than the target demand load of the target heating area, the heat source point combination is recorded as an excluded heat source point combination; If the actual supplied heat energy of the heat source point combination is greater than or equal to the target demand load of the target heating area, the heat source point combination is recorded as a candidate heat source point combination for the target heating area.

[0011] Preferably, according to the actual supplied heat energy of the candidate heat source point combination and the target demand load of the target heating area, a first matching coefficient between the candidate heat source point combination and the target heating area is obtained, specifically: The actual supplied heat energy of the selected heat source point combination is obtained by taking and marking the actual supplied heat energy Q g ; The target demand load of the target heating area is taken and marked to obtain the target demand load Q h ; By first calculating the function The first matching coefficient OX between the candidate heat source point combination and the target heating area is calculated.

[0012] Preferably, a second matching coefficient between the candidate heat source point combination and the target heating area is obtained according to the combined loss heat energy of the candidate heat source point combination, specifically: The number of heat source points in the heat source point combination to be selected is taken and marked to obtain the number of heat source points m; the heat source point loss heat energy of the heat source point in the heat source point combination to be selected is taken and marked to obtain the heat source point loss heat energy Q s ; Through the second calculation function The second matching coefficient TX between the candidate heat source point combination and the target heating area is calculated, where a 1 、a 2 is the preset proportional factor, and i is the number of the heat source point in the heat source point combination to be selected.

[0013] Preferably, the comprehensive matching coefficient between the candidate heat source point combination and the target heating area is obtained according to the first matching coefficient and the second matching coefficient, specifically: Through the third calculation function The comprehensive matching coefficient ZX between the candidate heat source point combination and the target heating area is calculated, where b 1 、b 2 is the preset scaling factor; The comprehensive matching coefficient between the candidate heat source point combination and the target heating area is compared and analyzed with the preset matching coefficient threshold to obtain the comprehensive matching degree between the candidate heat source point combination and the target heating area; the target heat source point combination corresponding to the target heating area is obtained according to the comprehensive matching degree, specifically: If the comprehensive matching coefficient between the candidate heat source point combination and the target heating area is greater than or equal to a preset matching coefficient threshold, the candidate heat source point combination is recorded as an excluded heat source point combination; If the comprehensive matching coefficient between the combination of the selected heat source points and the target heating area is less than the preset matching coefficient threshold, the preset matching coefficient threshold is taken and marked to obtain the matching coefficient threshold PZ; And through the fourth calculation function Calculate the comprehensive matching degree ZPD between the candidate heat source point combination and the target heating area; The candidate heat source point combination with the smallest comprehensive matching degree ZPD with the target heating area is marked as the target heat source point combination.

[0014] In summary, the beneficial effects of the present application are as follows: the present application obtains the target demand load of the target heating area by analyzing the historical load data of the target heating area, and sets the target heat source area corresponding to the target heating area according to the target demand load; in addition, generates a heat source point combination of the target heat source area according to the heat source point data of the target heat source area, and obtains the combined supply heat energy and the combined loss heat energy of the heat source point combination, and obtains the actual supply heat energy corresponding to the heat source point combination according to the combined supply heat energy and the combined loss heat energy; finally, according to the actual supply heat energy of the heat source point combination to be selected and the target demand load of the target heating area, obtains the first matching coefficient between the heat source point combination to be selected and the target heating area, and The second matching coefficient of the candidate heat source point combination and the target heating area is obtained by using the lost heat energy, and the comprehensive matching coefficient of the candidate heat source point combination and the target heating area is obtained based on the first matching coefficient and the second matching coefficient; the comprehensive matching coefficient of the candidate heat source point combination and the target heating area is compared and analyzed with the preset matching coefficient threshold to obtain the comprehensive matching degree of the candidate heat source point combination and the target heating area; the target heat source point combination corresponding to the target heating area is obtained based on the comprehensive matching degree, and the target heating area is heated based on the heat source points in the target heat source point combination, thereby realizing a reasonable load distribution of the heat source points around the heating area, improving the heating efficiency of the centralized heating system while reducing unnecessary thermal energy resource loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the present application, some of the drawings in the embodiments of the present application will be briefly described below. It should be understood that the following drawings only show some embodiments of the present application and therefore should not be considered as limiting the scope of the present application.

[0016] Figure 1 A schematic flow chart of a load zoning control method for a centralized heating system provided in an embodiment of the present application. DETAILED DESCRIPTION

[0017] Below is a combination of the embodiments and Figure 1 The present application is further described in detail, but the implementation methods of the present application are not limited thereto.

[0018] A method for controlling load by zone in a central heating system, comprising the following steps: Obtain historical load data of the target heating area, and obtain the target demand load of the target heating area based on the historical load data analysis; According to the target demand load, the target heat source area corresponding to the target heating area is set; Acquire heat source point data of the target heat source area, and generate a heat source point combination of the target heat source area based on the heat source point data; According to the combination of heat source points, the combined supply heat energy and the combined loss heat energy of the heat source point combination are obtained, and according to the combined supply heat energy and the combined loss heat energy, the actual supply heat energy corresponding to the heat source point combination is obtained; Compare and analyze the actual heat energy supplied by the heat source point combination with the target demand load of the target heating area to obtain the candidate heat source point combination corresponding to the target heating area; According to the actual supplied heat energy of the candidate heat source point combination and the target demand load of the target heating area, a first matching coefficient between the candidate heat source point combination and the target heating area is obtained; Obtaining a second matching coefficient between the candidate heat source point combination and the target heating area according to the combined loss heat energy of the candidate heat source point combination; Obtaining a comprehensive matching coefficient between the candidate heat source point combination and the target heating area according to the first matching coefficient and the second matching coefficient; Compare and analyze the comprehensive matching coefficient between the candidate heat source point combination and the target heating area with the preset matching coefficient threshold to obtain the comprehensive matching degree between the candidate heat source point combination and the target heating area; The target heat source point combination corresponding to the target heating area is obtained according to the comprehensive matching degree, and the target heating area is heated according to the heat source points in the target heat source point combination.

[0019] Obtain the historical load data of the target heating area, and obtain the target demand load of the target heating area based on the historical load data analysis, specifically: The historical load data includes the historical load data of the target heating area during the historical heating period; Obtain the waiting heating period of the target heating area; Obtaining the historical heating time period corresponding to the waiting heating time period in the historical heating time of the target heating area according to the waiting heating time period; The historical period load data of the historical heating period is obtained, and the target demand load of the target heating area is obtained according to the historical period load data.

[0020] In some embodiments, the waiting heating period of the target heating area refers to the time period when the target heating area needs to be heated. For example, the waiting heating period of the target heating area may be from 7:00 p.m. to 10:00 p.m. on the 15th of this month this year. At this time, the historical heating period is from 7:00 p.m. to 10:00 p.m. on the 15th of this month last year in the heating area. In addition, the historical period load value of the historical heating period is obtained by integrating the historical period load data of the target heating area from 7:00 p.m. to 10:00 p.m. on the 15th of this month last year, and the historical period load value is recorded as the target demand load of the target heating area. For example, Q(t) is used to represent the heat load as a function of time t. This function can be used to describe the load fluctuation in the target heating area. The 15th of last month at 7:00 p.m. is marked as t 1, mark the 15th of last month at 10 o'clock in the evening as t 2 , then by integration It can be calculated from t 1 Time to t 2 The cumulative load of the target heating area at each moment is the historical load value of the target heating area from 7:00 p.m. to 10:00 p.m. on the 15th of the previous month, expressed in joules or kilowatt-hours.

[0021] The target heat source area corresponding to the target heating area is set according to the target demand load, specifically: The target heating area is marked as the center of the mark, and at least one radiation radius is set; Obtain the candidate heat source area of ​​the target heating area according to the marking center and the radiation radius; Obtain the number of heat source points in the heat source area to be selected, and the heat source points supplying heat energy to the heat source points in the heat source area to be selected; According to the number of heat source points and the heat source point supply heat energy of the heat source points in the heat source area to be selected, the regional supply heat energy of the heat source area to be selected is obtained; The candidate heat source regions whose regional heat supply is greater than or equal to the target demand load are marked as target heat source regions.

[0022] In some embodiments, obtaining the candidate heat source region of the target heating region according to the marking center and the radiation radius means dividing the region with the marking center as the center of the circle and the radiation radius as the radius of the circle, and the obtained region is the candidate heat source region of the target heating region; In addition, heat source points refer to thermal power plants, regional boiler rooms, natural gas boilers and other sites used to produce thermal energy.

[0023] The heat source point data of the target heat source area is obtained, and the heat source point combination of the target heat source area is generated according to the heat source point data, specifically: The heat source point data includes the number of heat source points in the target heat source area, the heat energy supplied by the heat source points corresponding to the heat source points, and the supply distance between the heat source points and the target heating area; The heat energy loss of the heat source point of the heat source point is obtained according to the supply distance between the heat source point and the target heating area; The heat source points in the target heat source area are randomly combined to generate a heat source point combination in the target heat source area. The target heat source area contains at least one heat source point combination.

[0024] In some embodiments, obtaining the heat source point loss heat energy of the heat source point according to the supply distance between the heat source point and the target heating area refers to obtaining the heat source point loss heat energy of the heat source point at the supply distance through the historical heat source point loss composite data of the heat source point; In addition, randomly combining the heat source points in the target heat source area means that all the heat source points in the target heat source area are combined. For example, if there are three heat source points in the target heat source area, namely, the first heat source point, the second heat source point and the third heat source point, then the result of combining all the heat source points in the target heat source area is seven combinations of "first heat source point", "second heat source point", "third heat source point", "first heat source point and second heat source point", "first heat source point and third heat source point", "second heat source point and third heat source point", and "first heat source point, second heat source point and third heat source point".

[0025] According to the combination of heat source points, the combined supply heat energy and the combined loss heat energy of the heat source point combination are obtained, and according to the combined supply heat energy and the combined loss heat energy, the actual supply heat energy corresponding to the heat source point combination is obtained, specifically: The heat energy supplied by the heat source points in the heat source point combination is accumulated and summed to obtain the combined heat energy supplied by the heat source point combination; According to the cumulative summation of the heat source point loss heat energy of the heat source points in the heat source point combination, the combined loss heat energy of the heat source point combination is obtained; The difference between the combined supply heat energy and the combined loss heat energy of the heat source point combination is calculated to obtain the actual supply heat energy corresponding to the heat source point combination.

[0026] In some embodiments, performing a difference calculation between the combined heat energy supplied by the heat source point combination and the combined heat energy lost means subtracting the combined heat energy lost from the combined heat energy supplied by the heat source point combination to obtain the actual heat energy supplied corresponding to the heat source point combination.

[0027] The actual heat energy supplied by the heat source point combination is compared and analyzed with the target demand load of the target heating area to obtain the candidate heat source point combination corresponding to the target heating area, specifically: If the actual heat energy supplied by the heat source point combination is less than the target demand load of the target heating area, the heat source point combination is recorded as an excluded heat source point combination; If the actual supplied heat energy of the heat source point combination is greater than or equal to the target demand load of the target heating area, the heat source point combination is recorded as a candidate heat source point combination for the target heating area.

[0028] According to the actual heat energy supplied by the candidate heat source point combination and the target demand load of the target heating area, the first matching coefficient between the candidate heat source point combination and the target heating area is obtained, which is specifically: The actual supplied heat energy of the candidate heat source point combination is taken and marked to obtain the actual supplied heat energy Q g ; Take the target demand load of the target heating area and mark it to get the target demand load Q h ; By first calculating the function The first matching coefficient OX between the candidate heat source point combination and the target heating area is calculated.

[0029] In some embodiments, if the actual thermal energy supplied by the combination of heat source points to be selected is 100MW, the actual thermal energy supplied Q g The value is 100; if the target demand load of the target heating area is 99.9MW, then the target demand load Q h The value is 99.9, through the first calculation function The first matching coefficient OX between the candidate heat source point combination and the target heating area is calculated to be 0.1.

[0030] The second matching coefficient between the candidate heat source point combination and the target heating area is obtained according to the combined loss heat energy of the candidate heat source point combination, which is specifically: The number of heat source points in the heat source point combination to be selected is taken and marked to obtain the number of heat source points m; the heat source point loss heat energy of the heat source point in the heat source point combination to be selected is taken and marked to obtain the heat source point loss heat energy Q s ; Through the second calculation function The second matching coefficient TX between the candidate heat source point combination and the target heating area is calculated, where a 1 、a 2 is the preset proportional factor, and i is the number of the heat source point in the heat source point combination to be selected.

[0031] In some embodiments, if the heat source point heat energy loss of the heat source point in the heat source point combination to be selected is 0.1MW, then the heat source point heat energy loss Q s The value is 0.1; in addition, the heat source point loss heat energy Q s Refers to the thermal point loss load of a single heat source point; the proportional factor a 1 、a 2 The preset value is made based on the weight ratio of the combined heat loss energy of the candidate heat source point combination and the average value of the combined heat loss energy of the candidate heat source point combination.

[0032] The comprehensive matching coefficient between the candidate heat source point combination and the target heating area is obtained based on the first matching coefficient and the second matching coefficient, specifically: Through the third calculation function The comprehensive matching coefficient ZX between the candidate heat source point combination and the target heating area is calculated, where b 1 、b 2 is the preset scaling factor; The comprehensive matching coefficient between the candidate heat source point combination and the target heating area is compared and analyzed with the preset matching coefficient threshold to obtain the comprehensive matching degree between the candidate heat source point combination and the target heating area; the target heat source point combination corresponding to the target heating area is obtained according to the comprehensive matching degree, specifically: If the comprehensive matching coefficient between the candidate heat source point combination and the target heating area is greater than or equal to the preset matching coefficient threshold, the candidate heat source point combination is recorded as an excluded heat source point combination; If the comprehensive matching coefficient between the combination of the selected heat source points and the target heating area is less than the preset matching coefficient threshold, the preset matching coefficient threshold is taken and marked to obtain the matching coefficient threshold PZ; And through the fourth calculation function Calculate the comprehensive matching degree ZPD between the candidate heat source point combination and the target heating area; The candidate heat source point combination with the smallest comprehensive matching degree ZPD with the target heating area is marked as the target heat source point combination.

[0033] In some embodiments, if the first matching coefficient OX between the candidate heat source point combination and the target heating area is 0.1, and the second matching coefficient TX between the candidate heat source point combination and the target heating area is 0.5, the preset proportional factor b 1 、b 2 If it is 10 or 15, then the third calculation function The calculated comprehensive matching coefficient ZX between the candidate heat source point combination and the target heating area is 8.5; the proportional factor b 1 、b 2 Preset according to the weight ratio of the first matching coefficient OX and the second matching coefficient TX; If the preset matching coefficient threshold is 10, then the matching coefficient threshold PZ is 10. At this time, the fourth calculation function The calculated comprehensive matching degree ZPD between the candidate heat source point combination and the target heating area is 1.5; If there is at least one candidate heat source point combination whose comprehensive matching degree ZPD with the target heating area is the smallest, a random selection is performed in the at least one candidate heat source point combination to obtain the target heat source point combination.

[0034] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A method for controlling load by zone in a central heating system, characterized in that: include: Acquire historical load data of the target heating area, and obtain the target demand load of the target heating area based on the historical load data; Setting a target heat source area corresponding to a target heating area according to the target demand load; Acquire heat source point data of the target heat source area, and generate a heat source point combination of the target heat source area according to the heat source point data; According to the heat source point combination, the combined supply heat energy and the combined loss heat energy of the heat source point combination are obtained, and according to the combined supply heat energy and the combined loss heat energy, the actual supply heat energy corresponding to the heat source point combination is obtained; Compare and analyze the actual supplied heat energy of the heat source point combination with the target demand load of the target heating area to obtain a candidate heat source point combination corresponding to the target heating area; According to the actual supplied heat energy of the candidate heat source point combination and the target demand load of the target heating area, a first matching coefficient between the candidate heat source point combination and the target heating area is obtained; Obtaining a second matching coefficient between the candidate heat source point combination and the target heating area according to the combined loss heat energy of the candidate heat source point combination; Obtaining a comprehensive matching coefficient between the candidate heat source point combination and the target heating area according to the first matching coefficient and the second matching coefficient; Compare and analyze the comprehensive matching coefficient between the combination of the heat source points to be selected and the target heating area with a preset matching coefficient threshold to obtain the comprehensive matching degree between the combination of the heat source points to be selected and the target heating area; A target heat source point combination corresponding to the target heating area is obtained according to the comprehensive matching degree, and the target heating area is heated according to the heat source points in the target heat source point combination.

2. A method for controlling load by zoning in a centralized heating system according to claim 1, characterized in that: Obtain historical load data of the target heating area, and obtain the target demand load of the target heating area based on the historical load data analysis, specifically: The historical load data includes the heating load data of the target heating area during the historical heating time; Obtain the waiting heating period of the target heating area; Acquire a historical heating period corresponding to the waiting heating period in the historical heating time of the target heating area according to the waiting heating period; The historical period load data of the historical heating period is obtained, and the target demand load of the target heating area is obtained according to the historical period load data.

3. A method for controlling load by zone in a centralized heating system according to claim 2, characterized in that: The target heat source area corresponding to the target heating area is set according to the target demand load, specifically: The target heating area is marked as a marking center, and at least one radiation radius is set; Obtaining a candidate heat source area of ​​a target heating area according to the marking center and the radiation radius; Obtain the number of heat source points in the heat source area to be selected, and the heat source points supplying heat energy to the heat source points in the heat source area to be selected; According to the number of heat source points and the heat source point supply heat energy of the heat source points in the heat source area to be selected, the regional supply heat energy of the heat source area to be selected is obtained; The candidate heat source region whose heat energy supplied to the region is greater than or equal to the target demand load is marked as the target heat source region.

4. A method for controlling load by zone in a centralized heating system according to claim 3, characterized in that: Acquire the heat source point data of the target heat source area, and generate the heat source point combination of the target heat source area according to the heat source point data, specifically: The heat source point data includes the number of heat source points in the target heat source area, the heat energy supplied by the heat source points corresponding to the heat source points, and the supply distance between the heat source points and the target heating area; The heat energy loss of the heat source point of the heat source point is obtained according to the supply distance between the heat source point and the target heating area; The heat source points in the target heat source area are randomly combined to generate a heat source point combination in the target heat source area, wherein the target heat source area contains at least one heat source point combination.

5. A method for controlling load by zone in a centralized heating system according to claim 4, characterized in that: According to the heat source point combination, the combined supply heat energy and the combined loss heat energy of the heat source point combination are obtained, and according to the combined supply heat energy and the combined loss heat energy, the actual supply heat energy corresponding to the heat source point combination is obtained, specifically: Accumulating and summing the heat energy supplied by the heat source points in the heat source point combination to obtain the combined heat energy supplied by the heat source point combination; Accumulating and summing the heat source point loss heat energies of the heat source points in the heat source point combination to obtain the combined loss heat energy of the heat source point combination; The difference between the combined supply heat energy and the combined loss heat energy of the heat source point combination is calculated to obtain the actual supply heat energy corresponding to the heat source point combination.

6. A method for controlling load by zone in a centralized heating system according to claim 5, characterized in that: The actual heat energy supplied by the heat source point combination is compared and analyzed with the target demand load of the target heating area to obtain the candidate heat source point combination corresponding to the target heating area, specifically: If the actual heat energy supplied by the heat source point combination is less than the target demand load of the target heating area, the heat source point combination is recorded as an excluded heat source point combination; If the actual supplied heat energy of the heat source point combination is greater than or equal to the target demand load of the target heating area, the heat source point combination is recorded as a candidate heat source point combination for the target heating area.

7. A method for controlling load by zone in a centralized heating system according to claim 6, characterized in that: According to the actual supplied heat energy of the candidate heat source point combination and the target demand load of the target heating area, a first matching coefficient between the candidate heat source point combination and the target heating area is obtained, which is specifically: The actual supplied heat energy of the selected heat source point combination is obtained by taking and marking the actual supplied heat energy Q g ; The target demand load of the target heating area is valued and marked to obtain the target demand load Q h ; By first calculating the function The first matching coefficient OX between the candidate heat source point combination and the target heating area is calculated.

8. A method for controlling load by zone in a centralized heating system according to claim 7, characterized in that: The second matching coefficient between the candidate heat source point combination and the target heating area is obtained according to the combined loss heat energy of the candidate heat source point combination, which is specifically: The number of heat source points in the heat source point combination to be selected is taken and marked to obtain the number of heat source points m; the heat source point loss heat energy of the heat source point in the heat source point combination to be selected is taken and marked to obtain the heat source point loss heat energy Q s ; Through the second calculation function The second matching coefficient TX between the combination of heat source points to be selected and the target heating area is calculated, wherein a1 and a2 are preset proportional factors, and i is the number of the heat source point in the combination of heat source points to be selected.

9. A method for controlling load by zone in a centralized heating system according to claim 8, characterized in that: The comprehensive matching coefficient between the candidate heat source point combination and the target heating area is obtained according to the first matching coefficient and the second matching coefficient, specifically: Through the third calculation function The comprehensive matching coefficient ZX between the combination of the selected heat source points and the target heating area is calculated, where b1 and b2 are preset proportional factors; The comprehensive matching coefficient between the candidate heat source point combination and the target heating area is compared and analyzed with the preset matching coefficient threshold to obtain the comprehensive matching degree between the candidate heat source point combination and the target heating area; the target heat source point combination corresponding to the target heating area is obtained according to the comprehensive matching degree, specifically: If the comprehensive matching coefficient between the candidate heat source point combination and the target heating area is greater than or equal to a preset matching coefficient threshold, the candidate heat source point combination is recorded as an excluded heat source point combination; If the comprehensive matching coefficient between the combination of the selected heat source points and the target heating area is less than the preset matching coefficient threshold, the preset matching coefficient threshold is taken and marked to obtain the matching coefficient threshold PZ; And through the fourth calculation function Calculate the comprehensive matching degree ZPD between the candidate heat source point combination and the target heating area; The candidate heat source point combination with the smallest comprehensive matching degree ZPD with the target heating area is marked as the target heat source point combination.

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