A correction method for electric consumption of lighting system in whole performance test of generating unit

Abstract

The application discloses a correction method for electric energy consumption of a lighting system in a unit overall performance test, which comprises the following steps: A, dividing the power design value of the lighting system of the whole plant according to regions and public properties and listing them before the test; B, confirming the intermittence coefficient of each region lighting system and the public coefficient; C, obtaining the electric energy consumption design value of the lighting system of the whole plant; D, checking the lighting system of the whole plant by an operator and a witness during the test, and counting the operation state of each region lighting system; E, obtaining the theoretical actual value of the electric energy consumption of the lighting system of the whole plant; F, obtaining the total correction amount of the electric energy consumption of the lighting system in the unit overall performance test; and G, the total correction amount of the electric energy consumption of the heating, ventilation and air conditioning equipment calculated according to steps A to F can reflect the electric energy consumption value of the system under the design condition. The correction method provided by the method can correct the factors influencing the electric energy consumption of the lighting system to the design condition, and is helpful for comparing the test result of the thermal power unit overall performance with the design guarantee value.

Description

Technical Field

[0001] This invention belongs to the field of thermal performance testing of thermal power units, and particularly relates to a method for correcting the power consumption of lighting systems in the overall performance test of the unit. Background Technology

[0002] In thermal power plant equipment, the power consumption of auxiliary equipment is a crucial performance indicator in the performance evaluation of thermal power units, directly impacting the overall test results. It is not only an important component of the unit's coal consumption for power generation but also a key indicator reflecting the power consumption of auxiliary equipment. However, in the overall performance testing of thermal power units, many auxiliary equipment and systems, due to their complex structures and numerous low-power devices, cannot have their power consumption fully statistically analyzed and measured in actual engineering projects.

[0003] The lighting system of thermal power units (self-use lighting for unit-type units, common lighting for multiple units, and lighting for public facilities, office facilities, and roads throughout the plant) is a major auxiliary system of thermal power units. Due to its complex equipment composition, mostly low-power equipment, and the fact that the lighting system is distributed throughout the plant and its wiring is also very complicated, it is impossible to effectively measure its actual power consumption directly in actual engineering projects.

[0004] The main factors affecting the actual power consumption of the unit's lighting system include:

[0005] (1) The needs for daytime and nighttime lighting differ in different regions;

[0006] (2) The lighting system in some areas was not fully commissioned during the test;

[0007] (3) The lighting system is more likely to malfunction, for example, the bulbs may break;

[0008] (4) Different operators have different operating habits, such as the habit of turning off the lights when leaving the house.

[0009] In summary, a correction method for lighting system power consumption in plant power consumption calculation is needed to make the lighting system power consumption in the overall performance test of thermal power units closer to the actual power consumption, thereby making the overall performance test results of thermal power units more accurate. Summary of the Invention

[0010] The purpose of this invention is to provide a method for correcting the power consumption of a lighting system during overall unit performance testing. In the overall performance testing of a thermal power unit, the method provided by this invention can correct the measured power consumption of the lighting system to the corresponding design conditions.

[0011] To achieve the above objectives, the present invention employs the following technical solution:

[0012] A method for correcting the power consumption of a lighting system during an overall unit performance test includes the following steps:

[0013] A. Before the overall performance test of the unit, the power design values ​​of the lighting system of the whole plant are listed according to the area division based on the design data and building installation drawings, and then distinguished according to the self-use of a single unit, the shared use of two or more units, and the shared use of the whole plant, and then proceed to step B.

[0014] B. Before the overall performance test of the unit, confirm the intermittency coefficient of the lighting system in different areas and include it in the list in step A, then proceed to step C;

[0015] C. Calculate the design power consumption of the entire plant's lighting system, then proceed to step D;

[0016] D. During the overall performance test of the unit, the lighting system of the whole plant shall be inspected by the dedicated operation personnel and witnesses of all parties involved in the test, and the operating status of the lighting system in each area of ​​the plant shall be counted and recorded in the lighting system list in the above steps. The witnesses of all parties involved in the test shall confirm the validity of the statistical results before proceeding to step E.

[0017] E. Calculate the theoretical and actual power consumption of the entire plant's lighting system, and proceed to step F;

[0018] F. Correction of power consumption of lighting system in overall computer group performance test, proceed to step G;

[0019] G. Conduct the overall performance test of the unit according to steps A to F. The power consumption correction of the lighting system in the overall performance test of the unit can reflect the power consumption value of the system under the design conditions.

[0020] A further improvement of the present invention is that, in step A, different utility coefficients are considered to correct the power consumption value of single-unit self-use equipment, two or more units shared equipment, and plant-wide shared equipment, so as to reflect the actual power consumption of the lighting system to the greatest extent.

[0021] A further improvement of the present invention is that, in step B, the intermittency coefficient of the lighting system is 0.5 for areas that only need to turn on the lighting at night, and the intermittency coefficient of the lighting system is 1 for areas that need continuous lighting 24 hours a day.

[0022] A further improvement of this invention is that, in step B, when confirming the common factor of the lighting systems in different areas, the common factor of each area lighting system used by the machine itself is set to 1, and the common factor of each area lighting system shared by the two machines is set to... The common factor of the lighting system shared by n machines in each area is taken as follows:

[0023] A further improvement of this invention is that, in step C, the power consumption design value of the entire plant's lighting system is calculated according to formula (1):

[0024] P lightings_design =(∑P 1_i ×λ 1_i )×γ1+(∑P 2_i ×λ 2_i )×γ2+…+(∑P n_i ×λ n_i )×γ n (1)

[0025] Among them, P lightings_design The power consumption design value for the entire plant's lighting system is expressed in kW; P 1_i P represents the design power consumption of the lighting systems in each area used by this machine. 2_i The power consumption design value for the lighting system in each area shared by the two machines, and so on, P n_i λ represents the design power consumption of the lighting system for all areas shared by n machines in the entire plant, in kW. 1_i λ represents the intermittency coefficient of the lighting systems used by this machine in various areas. 2_i λ represents the intermittency coefficient of the lighting system shared by the two machines in each area, and so on. n_i γ1 is the intermittency coefficient of the lighting system shared by all n machines in the plant, and is a dimensionless quantity; γ2 is the shared coefficient of the lighting system used by this machine itself, and γ3 is the shared coefficient of the lighting system used by two machines. n The common factor is the lighting system shared by all n machines in the plant, and it is a dimensionless quantity.

[0026] A further improvement of the present invention is that, in step D, on-site inspections are conducted by personnel to ensure the actual operating status of the lighting equipment, thereby reflecting the actual power consumption of the lighting system to the greatest extent possible.

[0027] A further improvement of the present invention is that, in step D, the lighting system is recorded as 1 when it is on and 0 when it is off.

[0028] A further improvement of this invention is that, in step E, the theoretical actual value of the power consumption of the entire plant's lighting system is calculated according to formula (2):

[0029]

[0030] Among them, P lightings_test This represents the theoretical and actual power consumption of the entire plant's lighting system, in kW. This refers to the operating status of the various area lighting systems used by this machine. The operating status of the lighting systems in each area shared by the two machines. This represents the operating status of the lighting systems in various areas shared by all n machines in the plant. The status of the lighting system being on is recorded as 1, and the status of being off is recorded as 0. This is a dimensionless quantity.

[0031] A further improvement of this invention is that, in step F, the power consumption correction amount of the lighting system in the overall performance test of the unit is calculated according to formula (3):

[0032] ΔP correction =P lightings_design -P lightings_test (3)

[0033] Wherein, ΔP correction This is the power consumption correction for the lighting system during the overall performance test of the unit, in kW.

[0034] The present invention has at least the following beneficial technical effects:

[0035] In the overall performance test of thermal power units, the correction method provided in this paper can be used to correct the factors affecting the power consumption of the lighting system to the design conditions, so that the obtained power consumption value of the lighting system can reflect the power consumption under the design conditions, thereby helping to compare the overall performance test results of thermal power units with the design guarantee value. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the process of the present invention. Detailed Implementation

[0037] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the disclosure to those skilled in the art. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0038] As attached Figure 1 The flowchart shown illustrates a method for correcting the power consumption of a lighting system during an overall unit performance test, provided by this invention. The method includes the following steps:

[0039] A. Before the overall performance test of the unit, the power design values ​​of the entire plant's lighting system are listed according to the area division based on the design data and building installation drawings, and further differentiated according to whether it is for single-unit self-use, shared by two or more units, or for plant-wide use. Proceed to step B;

[0040] B. Before the overall performance test of the unit, confirm the intermittency coefficient of the lighting system in different areas and include it in the list in step A. For example, for areas where lighting is only required at night, the intermittency coefficient of the lighting system can be taken as 0.5, while for areas requiring continuous lighting 24 hours a day, the intermittency coefficient of the lighting system can be taken as 1; confirm the common coefficient of the lighting system in different areas, for example, the common coefficient of the lighting system in each area used by this unit is taken as 1, and the common coefficient of the lighting system in each area shared by two units is taken as... The common factor of the lighting system shared by n machines in each area is taken as follows: Proceed to step C;

[0041] C. The power consumption design value of the entire plant lighting system is calculated according to formula (1):

[0042] P lightings_design =(∑P 1_i ×λ 1_i )×γ1+(∑P 2_i ×λ 2_i )×γ2+…+(∑P n_i ×λ n_i )×γ n (1)

[0044] Among them, P lightings_design The power consumption design value for the entire plant's lighting system is expressed in kW; P 1_i P represents the design power consumption of the lighting systems in each area used by this machine. 2_i The power consumption design value for the lighting system in each area shared by the two machines, and so on, P n_i The power consumption design value for the lighting system in each area shared by the entire plant (n machines), in kW; λ 1_i λ represents the intermittency coefficient of the lighting systems used by this machine in various areas. 2_i λ represents the intermittency coefficient of the lighting system shared by the two machines in each area, and so on. n_i γ1 is the intermittency coefficient of the lighting system shared by all areas of the plant (n machines), and is a dimensionless quantity; γ2 is the common coefficient of the lighting system shared by each machine; γ3 is the common coefficient of the lighting system shared by two machines; γ4 is the intermittency coefficient of the lighting system shared by each area of ​​the plant (n machines). n The commonality factor for the lighting systems in all areas shared by the entire plant (n machines) is a dimensionless quantity. Proceed to step D;

[0045] D. During the overall performance test of the unit, dedicated operating personnel and witnesses from all parties involved in the test shall inspect the entire plant's lighting system, compile statistics on the operating status of the lighting systems in each area of ​​the plant, and record them in the lighting system list mentioned in the previous steps. A "1" is recorded for a lighting system in operation, and a "0" is recorded for a system not in operation. Witnesses from all parties involved in the test shall verify the validity of the statistical results. Proceed to step E;

[0046] E. The theoretical and actual power consumption of the entire plant's lighting system is calculated according to formula (2):

[0047]

[0048] Among them, P lightings_test This represents the theoretical and actual power consumption of the entire plant's lighting system, in kW. This refers to the operating status of the various area lighting systems used by this machine. The operating status of the lighting systems in each area shared by the two machines. This describes the operational status of the lighting systems shared by all n machines in the plant. The on / off status is recorded as 1, and the off status as 0. These are dimensionless quantities. Proceed to step F;

[0049] F. The total power consumption correction of the lighting system in the overall performance test of the unit is calculated according to formula (3):

[0050] ΔP correction =P lightings_design -P lightings_test (3)

[0051] Wherein, ΔP correction This is the total power consumption correction for the lighting system during the overall unit performance test, in kW. Proceed to step G;

[0052] G. Conduct the overall performance test of the unit according to steps A to F, and calculate the total power consumption correction ΔP of the lighting system in the overall performance test of the unit. correction This reflects the power consumption of the system under design conditions. The following is an example of power consumption correction calculation for the lighting system of a thermal power project:

[0053] Table 1 Example of power consumption correction calculation for lighting system of a thermal power project

[0054]

[0055]

[0056]

[0057]

[0058]

[0059] As shown in Table 1, in this example, the total power consumption correction for the lighting system is -22.46kW, and the actual measured total auxiliary power consumption of the unit is 56950.7kW. In the subsequent performance test calculation, -22.46kW is added to the actual total plant power consumption, and the calculated total auxiliary power consumption after correcting for the lighting system power consumption in the overall performance test is 56928.2kW.

[0060] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

Claims

1. A method for correcting the power consumption of a lighting system during an overall unit performance test, characterized in that, Includes the following steps: A. Before the overall performance test of the unit, the power design values ​​of the lighting system of the whole plant are listed according to the area division based on the design data and building installation drawings, and then distinguished according to the self-use of a single unit, the shared use of two or more units, and the shared use of the whole plant, and then proceed to step B. B. Before the overall performance test of the unit, confirm the intermittency coefficient of the lighting system in different areas and include it in the list in step A, then proceed to step C; C. Calculate the design power consumption of the entire plant's lighting system and proceed to step D; the design power consumption of the entire plant's lighting system is calculated according to formula (1): （1） in, This is the design power consumption value for the entire plant's lighting system, in kW; The power consumption design values ​​are for the lighting systems in each area used by this machine. The power consumption design values ​​for the lighting systems in each area shared by both machines are given, and so on. For the whole factory n The power consumption design values ​​of the lighting systems for each area shared by the desktop computer, in kW; This refers to the intermittency coefficient of the lighting systems in each area used by this machine. The intermittency coefficient is the intermittency factor for the lighting system in each area shared by the two machines, and so on. For the whole factory n The intermittency coefficient of the lighting system shared by the desktop computer in each area is a dimensionless quantity; This is the common factor for the lighting systems in each area used by this machine. The common factor for the lighting systems in each area shared by both machines. For the whole factory n The common factor of the lighting system for each area shared by the desktop computer is a dimensionless quantity; D. During the overall performance test of the unit, the lighting system of the whole plant shall be inspected by the dedicated operation personnel and witnesses of all parties involved in the test, and the operating status of the lighting system in each area of ​​the plant shall be counted and recorded in the lighting system list in the above steps. The witnesses of all parties involved in the test shall confirm the validity of the statistical results before proceeding to step E. E. Calculate the theoretical and actual power consumption of the entire plant's lighting system, and proceed to step F; the theoretical and actual power consumption of the entire plant's lighting system is calculated according to formula (2): （2） in, This represents the theoretical and actual power consumption of the entire plant's lighting system, in kW. This refers to the operating status of the various area lighting systems used by this machine. The operating status of the lighting systems in each area shared by the two machines. For the whole factory n The operating status of the lighting systems in each area shared by the desktop computer, where the lighting system on status is recorded as 1 and the off status is recorded as 0, which are dimensionless quantities; F. The power consumption correction amount of the lighting system in the overall performance test of the computer group is entered into step G; the power consumption correction amount of the lighting system in the overall performance test of the unit is calculated according to formula (3): （3） in, This is the power consumption correction for the lighting system during the overall performance test of the unit, in kW; G. Conduct the overall performance test of the unit according to steps A to F. The power consumption correction of the lighting system in the overall performance test of the unit can reflect the power consumption value of the system under the design conditions.

2. The method for correcting the power consumption of the lighting system in the overall performance test of a generator unit according to claim 1, characterized in that, In step A, different utility coefficients are considered to correct the power consumption values ​​of single-unit self-use equipment, two or more units shared equipment, and plant-wide shared equipment, so as to reflect the actual power consumption of the lighting system to the greatest extent.

3. The method for correcting the power consumption of the lighting system in the overall performance test of the unit according to claim 1, characterized in that, In step B, the intermittency coefficient of the lighting system is 0.5 for areas that only need to turn on the lights at night, and 1 for areas that need to be continuously lit 24 hours a day.

4. The method for correcting the power consumption of the lighting system in the overall performance test of a generator unit according to claim 1, characterized in that, In step B, when confirming the common factor of the lighting systems in different areas, the common factor for each area lighting system used by this machine is set to 1, and the common factor for each area lighting system shared by two machines is set to... , n The common factor of the lighting system for each area shared by the desktop computer is taken as follows: .

5. The method for correcting the power consumption of the lighting system in the overall performance test of the unit according to claim 1, characterized in that, In step D, on-site inspections are conducted by personnel to ensure the actual operating status of the lighting equipment and to reflect the actual power consumption of the lighting system to the greatest extent possible.

6. The method for correcting the power consumption of the lighting system in the overall performance test of a generator unit according to claim 1, characterized in that, In step D, the lighting system is recorded as 1 when it is on and 0 when it is off.

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