Compensation method for direct air cooling fan speed to ambient air and tube bundle temperature
By detecting the wind direction and wind speed of the ambient wind, the initial output power compensation and temperature correction are performed on the fan array of the air-cooled fan, which solves the problem of uneven temperature of the air-cooled unit tube bundle caused by the influence of ambient wind and improves the uniformity of the cooling capacity.
Patent Information
- Application Number
- CN202211133201.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2022-09-16
- Publication Date
- 2025-02-14
- Estimated Expiration
- 2042-09-16
AI Technical Summary
During the working process, the air-cooled fan arrays have significant differences in the cooling capacity of each fan due to the influence of ambient wind, which in turn causes uneven temperature of the air-cooled unit tube bundle.
The wind direction direction rectangular coordinate system is established through the wind speed and wind direction meter to detect the wind direction and wind speed of the ambient wind. Based on these data, the initial output power compensation is performed on the windward side fan of the fan array, and the temperature is measured through the tube bundle temperature monitoring component, and the temperature correction parameters are calculated to output power. Make corrections.
It effectively improves the uneven temperature of the air-cooled unit tube bundle, improves the working frequency of the air-cooled fan, and enhances the uniformity of the cooling capacity.
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Figure CN115929668B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of air cooler control, and in particular to a compensation method for an air cooler. Background Art
[0002] The windward angle of the fan array of the air-cooling fan unit (i.e. the four directions of the right front, left front, left rear and right rear of the fan array) will face the ambient wind during operation. The influence of the ambient wind will cause significant differences in the cooling capacity of each fan in the direct unit, thereby causing uneven temperature of the tube bundles of each air-cooling unit. Summary of the invention
[0003] The purpose of the present invention is to provide a method for compensating the speed of a direct air-cooling fan for ambient wind and tube bundle temperature, so as to solve the above technical problems;
[0004] The compensation method of direct air cooling fan speed for ambient air and tube bundle temperature includes:
[0005] Step S1, establishing a wind direction rectangular coordinate system through an anemometer to detect the wind direction and wind speed of the ambient wind;
[0006] Step S2, based on the wind direction and wind speed of the ambient wind, the initial output power of the wind turbines in the first P rows and the first Q columns of an M×N wind turbine array located on the windward side is compensated to obtain the compensated output power, wherein M, N, P, and Q are all positive integers;
[0007] Step S3, measuring the tube bundle temperature of the cooling unit of the fan after power compensation in step S2 by a tube bundle temperature monitoring component, and calculating a temperature correction parameter, and correcting the compensated output power based on the temperature correction parameter to obtain a corrected output power.
[0008] Preferably, the origin of the wind direction rectangular coordinate system is located at the center of the wind turbine array, and the sides of a rectangle formed by the wind direction rectangular coordinate system are perpendicular to the coordinate axes of the wind direction rectangular coordinate system. The wind turbines are arranged in the 1st column, the 2nd column to the Nth column, a total of N columns, in the positive direction of the horizontal axis, and the wind turbines are arranged in the 1st row, the 2nd row to the Mth row, a total of M rows, in the negative direction of the vertical axis.
[0009] Preferably, in step S2, if the wind direction of the ambient wind falls into the first quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the N-Q+1th column, the N-Q+2th column to the Nth column (a total of Q columns) and the wind turbines in the 1st row, the 2nd row to the Pth row (a total of P rows) in the wind turbine array is compensated, wherein:
[0010] The compensated output power of the P×Q wind turbines that overlap the N-Q+1th column, the N-Q+2th column to the Nth column and the 1st row, the 2nd row to the Pth row is,
[0011] F1=(1+(K1×V))×f
[0012] Wherein F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power;
[0013] The output power after compensation of the remaining wind turbines in the N-Q+1th column, the N-Q+2th column to the jth column in the Nth column is,
[0014] F1=(1+(K N-j+1 ×V×cosθ))×f
[0015] Where F1 is the output power after compensation, K N-j+1 is the N-j+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the coordinate horizontal axis in the counterclockwise direction, and f is the initial output power;
[0016] The compensated output power of the remaining fans in row 1, row 2 to row P in row i is,
[0017] F1=(1+(K i ×V×sinθ))×f
[0018] Where F1 is the output power after compensation, K i is the ith compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power.
[0019] Preferably, in step S2, if the wind direction of the ambient wind falls into the second quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the 1st column, the 2nd column to the Qth column (total Q columns) and the wind turbines in the 1st row, the 2nd row to the Pth row (total P rows) in the wind turbine array is compensated, wherein:
[0020] The compensated output power of the P×Q wind turbines that overlap the 1st, 2nd to Qth columns and the 1st, 2nd to Pth rows is,
[0021] F1=(1+(K1×V))×f
[0022] Wherein F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power;
[0023] The output power after compensation of the remaining wind turbines in the jth column in the 1st column, the 2nd column to the Qth column is,
[0024] F1=(1+(K j×V×cosθ))×f
[0025] Where F1 is the output power after compensation, K j is the jth compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power;
[0026] The compensated output power of the remaining fans in row 1, row 2 to row P in row i is,
[0027] F1=(1+(K i ×V×sinθ))×f
[0028] Where F1 is the output power after compensation, K i is the ith compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power.
[0029] Preferably, in step S2, if the wind direction of the ambient wind falls into the third quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the 1st column, the 2nd column to the Qth column (total Q columns) and the wind turbines in the M-P+1th row, the M-P+2th row to the Mth row (total P rows) in the wind turbine array is compensated, wherein:
[0030] The compensated output power of the P×Q wind turbines that overlap the 1st column, the 2nd column to the Qth column and the M-P+1th row, the M-P+2th row to the Mth row is,
[0031] F1=(1+(K1×V))×f
[0032] Wherein F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power;
[0033] The output power after compensation of the remaining wind turbines in the jth column in the 1st column, the 2nd column to the Qth column is,
[0034] F1=(1+(K j ×V×cosθ))×f
[0035] Where F1 is the output power after compensation, K j is the jth compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power;
[0036] The compensated output power of the remaining wind turbines in the i-th row from the M-P+1th row, the M-P+2th row to the M-th row is,
[0037] F1=(1+(K M-i+1 ×V×sinθ))×f
[0038] Where F1 is the output power after compensation, K M-i+1 is the M-i+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the coordinate horizontal axis along the counterclockwise direction, and f is the initial output power.
[0039] Preferably, in step S2, if the wind direction of the ambient wind falls into the fourth quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the N-Q+1th column, the N-Q+2th column to the Nth column (a total of Q columns) and the wind turbines in the M-P+1th row, the M-P+2th row to the Mth row (a total of P rows) in the wind turbine array is compensated, wherein:
[0040] The compensated output power of the P×Q wind turbines that overlap the N-Q+1th column, the N-Q+2th column to the Nth column and the M-P+1th row, the M-P+2th row to the Mth row is,
[0041] F1=(1+(K1×V))×f
[0042] Wherein F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power;
[0043] The output power after compensation of the remaining wind turbines in the N-Q+1th column, the N-Q+2th column to the jth column in the Nth column is,
[0044] F1=(1+(K N-j+1 ×V×cosθ))×f
[0045] Where F1 is the output power after compensation, K N-j+1 is the N-j+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the coordinate horizontal axis in the counterclockwise direction, and f is the initial output power;
[0046] The compensated output power of the remaining wind turbines in the i-th row from the M-P+1th row, the M-P+2th row to the M-th row is,
[0047] F1=(1+(K M-i+1 ×V×sinθ))×f
[0048] Where F1 is the output power after compensation, K M-i+1 is the M-i+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the coordinate horizontal axis along the counterclockwise direction, and f is the initial output power.
[0049] Preferably, the compensation coefficients include a first compensation coefficient, a second compensation coefficient to a max compensation coefficient, wherein max is a larger value of P and Q, and the compensation coefficients decrease monotonically from the first compensation coefficient to the max compensation coefficient.
[0050] Preferably, the initial output power is calculated by a PID controller based on a measured back pressure value of the fan array and a set back pressure value.
[0051] Preferably, the calculation formula of the temperature correction parameter in step S3 is:
[0052] T=1-l×(T2-T1-t)
[0053] Wherein, T is the temperature correction parameter, l is the correction proportional coefficient, T2 is the exhaust temperature, T1 is the tube bundle temperature of the cooling unit, and t is the temperature constant.
[0054] Preferably, the calculation formula for the corrected output power in step S3 is:
[0055] F2=F1×T
[0056] Among them, F2 is the corrected output power, F1 is the compensated output power, and T is the temperature correction parameter.
[0057] Beneficial effects of the present invention: Due to the adoption of the above technical solution, the present invention compensates for the working power of the windward side fan, increases the working frequency of the air-cooling fan, and greatly improves the problem of uneven temperature of the air-cooling unit tube bundle. BRIEF DESCRIPTION OF THE DRAWINGS
[0058] Figure 1 A schematic diagram of the steps of the compensation method in an embodiment of the present invention;
[0059] Figure 2 Schematic diagram of ambient wind flow from a fan array in an embodiment of the present invention. DETAILED DESCRIPTION
[0060] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0061] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.
[0062] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.
[0063] Direct air cooling fan speed compensation method for ambient air and tube bundle temperature, such as Figure 1 As shown, including,
[0064] Step S1, establishing a wind direction rectangular coordinate system through an anemometer to detect the wind direction and wind speed of the ambient wind;
[0065] Step S2, based on the wind direction and wind speed of the ambient wind, the initial output power of the wind turbines in the first P rows and the first Q columns of an M×N wind turbine array located on the windward side is compensated to obtain the compensated output power, wherein M, N, P, and Q are all positive integers;
[0066] Step S3, measuring the tube bundle temperature of the cooling unit of the fan after power compensation in step S2 by a tube bundle temperature monitoring component, and calculating a temperature correction parameter, and correcting the compensated output power based on the temperature correction parameter to obtain a corrected output power.
[0067] Specifically, the fan array in the present invention is an air-cooled fan unit, which has been installed with an anemometer and anemometer and a tube bundle temperature monitoring component. Due to the influence of the ambient wind from the windward angle of the fan array (i.e. the right front, left front, left rear and right rear directions of the fan array), the cooling capacity of each fan in the direct unit will be significantly different, which will lead to uneven temperature of the tube bundles of each air-cooled unit. Preferably, the present invention performs power compensation on the edge fan unit of the air cooler on the windward side and increases the frequency to improve the above situation.
[0068] More specifically, Figure 2 As shown in the figure, after the wind direction rectangular coordinate system is established, the positive direction of the horizontal axis is taken as the right side of the wind turbine array, and the positive direction of the vertical axis is taken as the front side of the wind turbine array. The wind direction angle θ of the ambient wind is determined by the wind direction rectangular coordinate system. Specifically, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction. When θ is 0°, it is defined as the right side of the wind turbine array, when θ is 90°, it is defined as the front side of the wind turbine array, when θ is 180°, it is defined as the left side of the wind turbine array, and when θ is 270°, it is defined as the rear side of the wind turbine array.
[0069] In a preferred embodiment, the origin of the wind direction rectangular coordinate system is set at the center of the wind turbine array, and the sides of a rectangle formed by the wind turbine array are perpendicular to the coordinate axis of the wind direction rectangular coordinate system. Wind turbines in the first, second, to Nth columns are arranged in sequence toward the positive direction of the horizontal axis, and wind turbines in the first, second, to Mth rows are arranged in sequence toward the negative direction of the vertical axis. Specifically, the coordinates of the wind turbine in the i-th row and j-th column in the wind turbine array are marked as A(i, j);
[0070] Where i and j are both positive integers, 1≤i≤M, 1≤j≤N.
[0071] In a preferred embodiment, in step S2, if the wind direction of the ambient wind falls into the first quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the N-Q+1th column, the N-Q+2th column to the Nth column (total Q columns) and the wind turbines in the 1st row, the 2nd row to the Pth row (total P rows) in the wind turbine array is compensated, wherein:
[0072] The compensated output power of the P×Q wind turbines that overlap the N-Q+1th column, the N-Q+2th column to the Nth column and the 1st row, the 2nd row to the Pth row is,
[0073] F1=(1+(K1×V))×f
[0074] Where F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power;
[0075] The compensated output power of the remaining fans in the N-Q+1th column, the N-Q+2th column to the jth column in the Nth column is,
[0076] F1=(1+(K N-j+1 ×V×cosθ))×f
[0077] Where F1 is the output power after compensation, K N-j+1 is the N-j+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power;
[0078] The compensated output power of the remaining fans in row 1, row 2 to row P is,
[0079] F1=(1+(K i ×V×sinθ))×f
[0080] Where F1 is the output power after compensation, K i is the i-th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power.
[0081] Specifically, in this embodiment, the wind direction of the ambient wind falls into the first quadrant as an example (the ambient wind comes from the right front), and the compensation is further set to act on the first two columns and the first two rows (P and Q are both 2) of the air cooling fans. At this time,
[0082] The compensated output power of the 2×2 fans whose N-1th and Nth columns coincide with the 1st and 2nd rows, i.e., the air-cooling fans with coordinates A(1, N), A(2, N-1), A(1, N), and A(2, N-1), is:
[0083] F1=(1+(K1×V))×f
[0084] Specifically, in this embodiment, K1 is 0.01s / m; the wind speed range of the ambient wind in this embodiment is 0m / s-20m / s;
[0085] More specifically, the output power of the remaining fans in the Nth (i.e., j=N) column after compensation is:
[0086] F1=(1+(K1×V×cosθ))×f
[0087] The compensated output power of the remaining fans in the N-1th (i.e., j=N-1) column is,
[0088] F1=(1+(K2×V×cosθ))×f
[0089] The compensated output power of the remaining fans in row 1 (i.e. i=1) is:
[0090] F1=(1+(K1×V×sinθ))×f
[0091] The compensated output power of the remaining fans in the second row (i.e., i=2) is,
[0092] F1=(1+(K2×V×sinθ))×f
[0093] In this embodiment, K1 is 0.01 s / m, and K2 is 0.005 s / m.
[0094] In a preferred embodiment, in step S2, if the wind direction of the ambient wind falls into the second quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the first column, the second column to the Qth column (total Q columns) and the wind turbines in the first row, the second row to the Pth row (total P rows) in the wind turbine array is compensated, wherein:
[0095] The compensated output power of the P×Q wind turbines that overlap the 1st, 2nd to Qth columns and the 1st, 2nd to Pth rows is,
[0096] F1=(1+(K1×V))×f
[0097] Where F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power;
[0098] The compensated output power of the remaining fans in the jth column in the 1st column, the 2nd column to the Qth column is,
[0099] F1=(1+(K j ×V×cosθ))×f
[0100] Where F1 is the output power after compensation, K j is the jth compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power;
[0101] The compensated output power of the remaining fans in row 1, row 2 to row P is,
[0102] F1=(1+(K i ×V×sinθ))×f
[0103] Where F1 is the output power after compensation, K i is the i-th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power.
[0104] In a preferred embodiment, in step S2, if the wind direction of the ambient wind falls into the third quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the 1st column, the 2nd column to the Qth column, and the wind turbines in the M-P+1th row, the M-P+2th row to the Mth row, and the initial output power of the wind turbines in the Pth row, is compensated, wherein:
[0105] The compensated output power of the P×Q wind turbines that overlap the 1st, 2nd to Qth columns and the M-P+1th, M-P+2th to Mth rows is,
[0106] F1=(1+(K1×V))×f
[0107] Where F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power;
[0108] The compensated output power of the remaining fans in the jth column in the 1st column, the 2nd column to the Qth column is,
[0109] F1=(1+(K j ×V×cosθ))×f
[0110] Where F1 is the output power after compensation, K j is the jth compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power;
[0111] The compensated output power of the remaining fans in row M-P+1, row M-P+2 to row i in row M is,
[0112] F1=(1+(K M-i+1 ×V×sinθ))×f
[0113] Where F1 is the output power after compensation, K M-i+1 is the M-i+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power.
[0114] In a preferred embodiment, in step S2, if the wind direction of the ambient wind falls into the fourth quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the N-Q+1th column, the N-Q+2th column to the Nth column (total Q columns) and the wind turbines in the M-P+1th row, the M-P+2th row to the Mth row (total P rows) in the wind turbine array is compensated, wherein:
[0115] The compensated output power of the P×Q wind turbines that overlap the N-Q+1th column, the N-Q+2th column to the Nth column and the M-P+1th row, the M-P+2th row to the Mth row is,
[0116] F1=(1+(K1×V))×f
[0117] Where F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power;
[0118] The compensated output power of the remaining fans in the N-Q+1th column, the N-Q+2th column to the jth column in the Nth column is,
[0119] F1=(1+(K N-j+1 ×V×cosθ))×f
[0120] Where F1 is the output power after compensation, K N-j+1 is the N-j+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power;
[0121] The compensated output power of the remaining fans in row M-P+1, row M-P+2 to row i in row M is,
[0122] F1=(1+(K M-i+1 ×V×sinθ))×f
[0123] Where F1 is the output power after compensation, K M-i+1 is the M-i+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power.
[0124] When the wind direction of the ambient wind falls into the second, third, and fourth quadrants, the embodiments are similar to those when the wind direction falls into the first quadrant, and will not be described in detail here.
[0125] In a preferred embodiment, the compensation coefficients include a first compensation coefficient, a second compensation coefficient to a max compensation coefficient, wherein max is a larger value of P and Q, and the compensation coefficients decrease monotonically from the first compensation coefficient to the max compensation coefficient.
[0126] In a preferred embodiment, the initial output power is calculated by a PID controller based on a measured back pressure value of the fan array and a set back pressure value.
[0127] In a preferred embodiment, the calculation formula of the temperature correction parameter in step S3 is:
[0128] T=1-l×(T2-T1-t)
[0129] Among them, T is the temperature correction parameter, l is the correction proportional coefficient, T2 is the exhaust temperature, T1 is the tube bundle temperature of the cooling unit, and t is the temperature constant.
[0130] Specifically, since different cooling unit tube bundles have different operating temperatures, each cooling unit fan is adjusted differently. The present invention needs to measure the tube bundle temperature of each cooling unit, wherein the downstream unit temperature sensor should be arranged below the tube bundle close to the header position, and the countercurrent unit temperature sensor should be arranged above the tube bundle close to the vacuum pipe position; the collected tube bundle temperature is compared with the low-pressure cylinder exhaust temperature, and the output frequency of each air-cooling fan is corrected according to the comparison result according to the formula.
[0131] Specifically, in this embodiment, the temperature constant is 5°C and the correction coefficient is 0.01, that is,
[0132] T=1-0.01×(T2-T1-5℃)
[0133] In a preferred embodiment, the calculation formula of the corrected output power in step S3 is:
[0134] F2=F1×T
[0135] Among them, F2 is the corrected output power, F1 is the compensated output power, and T is the temperature correction parameter.
[0136] Therefore, the corrected output power of the 2×2 fans whose N-1th and Nth columns coincide with the 1st and 2nd rows, i.e., the air-cooling fans with coordinates A(1, N), A(2, N-1), A(1, N), and A(2, N-1), is,
[0137] F2=(1+(K1×V))×f×T
[0138] Furthermore, the corrected output power of the remaining wind turbines in the Nth row (the first row facing the wind) is,
[0139] F2=(1+(K1×V×cosθ))×f×T
[0140] The corrected output power of the remaining wind turbines in the N-1th (second windward) row is,
[0141] F2=(1+(K2×V×cosθ))×f×T
[0142] The corrected output power of the remaining fans in row 1 (the first row facing the wind) is,
[0143] F2=(1+(K1×V×sinθ))×f×T
[0144] The corrected output power of the remaining fans in row 2 (the second row facing the wind) is,
[0145] F2=(1+(K2×V×sinθ))×f×T.
[0146] The above description is only a preferred embodiment of the present invention, and does not limit the implementation mode and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.
Claims
1. A method for compensating the speed of a direct air-cooling fan for ambient air and tube bundle temperature, characterized in that: include, Step S1, establishing a wind direction rectangular coordinate system through an anemometer to detect the wind direction and wind speed of the ambient wind; Step S2, based on the wind direction and wind speed of the ambient wind, the initial output power of the wind turbines in the first P rows and the first Q columns of an M×N wind turbine array located on the windward side is compensated to obtain the compensated output power, wherein M, N, P, and Q are all positive integers; Step S3, measuring the tube bundle temperature of the cooling unit of the fan after the power compensation in step S2 by a tube bundle temperature monitoring component, and calculating a temperature correction parameter, and correcting the compensated output power based on the temperature correction parameter to obtain a corrected output power; In step S2, if the wind direction of the ambient wind falls into the first quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the N-Q+1th column, the N-Q+2th column to the Nth column (total Q columns) and the wind turbines in the 1st row, the 2nd row to the Pth row (total P rows) in the wind turbine array is compensated, wherein: The compensated output power of the P×Q wind turbines that overlap the N-Q+1th column, the N-Q+2th column to the Nth column and the 1st row, the 2nd row to the Pth row is, F1=(1+(K1×V))×f Wherein F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power; The output power after compensation of the remaining wind turbines in the N-Q+1th column, the N-Q+2th column to the jth column in the Nth column is, F1=(1+(K N-j+1 ×V×cosθ))×f Where F1 is the output power after compensation, K N-j+1 is the N-j+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the coordinate horizontal axis in the counterclockwise direction, and f is the initial output power; The compensated output power of the remaining fans in row 1, row 2 to row P in row i is, F1=(1+(K i ×V×sinθ))×f Where F1 is the output power after compensation, K i is the i-th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power; The origin of the wind direction rectangular coordinate system is set at the center of the wind turbine array. The sides of a rectangle formed by the wind turbine array are perpendicular to the coordinate axes of the wind direction rectangular coordinate system. The wind turbines are arranged in the 1st, 2nd to Nth columns, a total of N columns, in the positive direction of the horizontal axis. The wind turbines are arranged in the 1st, 2nd to Mth rows, a total of M rows, in the negative direction of the vertical axis.
2. The method for compensating the speed of the direct air cooling fan for the ambient wind and the tube bundle temperature according to claim 1 is characterized in that: In step S2, if the wind direction of the ambient wind falls into the second quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the first column, the second column to the Qth column (total Q columns) and the wind turbines in the first row, the second row to the Pth row (total P rows) in the wind turbine array is compensated, wherein: The compensated output power of the P×Q wind turbines that overlap the 1st, 2nd to Qth columns and the 1st, 2nd to Pth rows is, F1=(1+(K1×V))×f Wherein F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power; The output power after compensation of the remaining wind turbines in the jth column in the 1st column, the 2nd column to the Qth column is, F1=(1+(K j ×V×cosθ))×f Where F1 is the output power after compensation, K j is the jth compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power; The compensated output power of the remaining fans in row 1, row 2 to row P in row i is, F1=(1+(K i ×V×sinθ))×f Where F1 is the output power after compensation, K i is the ith compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power.
3. The method for compensating the speed of the direct air cooling fan for the ambient wind and the tube bundle temperature according to claim 1 is characterized in that: In step S2, if the wind direction of the ambient wind falls into the third quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the 1st column, the 2nd column to the Qth column (total Q columns) and the wind turbines in the M-P+1th row, the M-P+2th row to the Mth row (total P rows) in the wind turbine array is compensated, wherein: The compensated output power of the P×Q wind turbines that overlap the 1st column, the 2nd column to the Qth column and the M-P+1th row, the M-P+2th row to the Mth row is, F1=(1+(K1×V))×f Wherein F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power; The output power after compensation of the remaining wind turbines in the jth column in the 1st column, the 2nd column to the Qth column is, F1=(1+(K j ×V×cosθ))×f Where F1 is the output power after compensation, K j is the jth compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the horizontal axis of the coordinate in the counterclockwise direction, and f is the initial output power; The compensated output power of the remaining wind turbines in the i-th row from the M-P+1th row, the M-P+2th row to the M-th row is, F1=(1+(K M-i+1 ×V×sinθ))×f Where F1 is the output power after compensation, K M-i+1 is the M-i+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the coordinate horizontal axis along the counterclockwise direction, and f is the initial output power.
4. The method for compensating the speed of the direct air cooling fan for the ambient wind and the tube bundle temperature according to claim 1 is characterized in that: In step S2, if the wind direction of the ambient wind falls into the fourth quadrant of the wind direction rectangular coordinate system, the initial output power of the wind turbines in the N-Q+1th column, the N-Q+2th column to the Nth column (total Q columns) and the wind turbines in the M-P+1th row, the M-P+2th row to the Mth row (total P rows) in the wind turbine array is compensated, wherein: The compensated output power of the P×Q wind turbines that overlap the N-Q+1th column, the N-Q+2th column to the Nth column and the M-P+1th row, the M-P+2th row to the Mth row is, F1=(1+(K1×V))×f Wherein F1 is the output power after compensation, K1 is the first compensation coefficient, V is the wind speed of the ambient wind, and f is the initial output power; The output power after compensation of the remaining wind turbines in the N-Q+1th column, the N-Q+2th column to the jth column in the Nth column is, F1=(1+(K N-j+1 ×V×cosθ))×f Where F1 is the output power after compensation, K N-j+1 is the N-j+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the coordinate horizontal axis in the counterclockwise direction, and f is the initial output power; The compensated output power of the remaining wind turbines in the i-th row from the M-P+1th row, the M-P+2th row to the M-th row is, F1=(1+(K M-i+1 ×V×sinθ))×f Where F1 is the output power after compensation, K M-i+1 is the M-i+1th compensation coefficient, V is the wind speed of the ambient wind, θ is the angle between the wind direction of the ambient wind and the positive semi-axis of the coordinate horizontal axis along the counterclockwise direction, and f is the initial output power.
5. The method for compensating the speed of the direct air cooling fan for the ambient wind and the tube bundle temperature according to claim 1 is characterized in that: The compensation coefficients include a first compensation coefficient, a second compensation coefficient to a max compensation coefficient, wherein max is a larger value of P and Q, and the compensation coefficients decrease monotonically from the first compensation coefficient to the max compensation coefficient.
6. The method for compensating the speed of the direct air cooling fan for the ambient wind and the temperature of the tube bundle according to claim 1, characterized in that: The initial output power is calculated by a PID controller based on a measured back pressure value of the fan array and a set back pressure value.
7. The method for compensating the speed of the direct air cooling fan for the ambient wind and the temperature of the tube bundle according to claim 1, characterized in that: The calculation formula of the temperature correction parameter in step S3 is: T=1-l×(T2-T1-t) Wherein, T is the temperature correction parameter, l is the correction proportional coefficient, T2 is the exhaust temperature, T1 is the tube bundle temperature of the cooling unit, and t is the temperature constant.
8. The method for compensating the speed of the direct air cooling fan for the ambient wind and the temperature of the tube bundle according to claim 1, characterized in that: The calculation formula of the corrected output power in step S3 is: F2=F1×T Among them, F2 is the corrected output power, F1 is the compensated output power, and T is the temperature correction parameter.
Citation Information
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