Method and system for calculating equivalent pipe diameter of water delivery system of pumped storage power station

Abstract

The invention belongs to the technical field of pumped storage, and provides a pumped storage power station water delivery system equivalent pipe diameter calculation method and system.The method comprises the steps that firstly, according to a pumped storage power station water delivery system arrangement diagram, the whole water delivery system is divided into a pipe section with the constant pipe diameter and a diffusion section; the pipe sections comprise round pipes with different pipe diameters, gradually-expanding and gradually-shrinking sections and square-round transition sections; secondly, for different types of pipe sections, determining the sectional areas of the corresponding equivalent circular pipes according to different calculation modes; and finally, obtaining the equivalent pipe diameter of the pipe section of the corresponding type according to all the obtained equivalent circular pipe section areas. According to the method, a mode of firstly classifying and then carrying out equivalent pipe diameter calculation on different types of pipe sections replaces a mode of importing the pipe sections into a calculation program one by one, so that the process of independently calculating each pipe section is avoided, the number of the pipe sections needing to be imported is reduced, calculation is simplified, the calculation amount is reduced, and the working efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of pumped storage, and in particular relates to a method and system for calculating the equivalent pipe diameter of a water delivery system of a pumped storage power station. Background Art

[0002] In recent years, with the rapid development of new energy and the accelerated construction of new power systems, the demand for new energy consumption and power system peak load regulation has increased significantly, which has promoted the development of pumped storage technology. Compared with conventional hydropower stations, the reversible units of pumped storage power stations have more operating conditions and faster conversion, and the units are frequently started and stopped. During operation, complex hydraulic transient processes will occur in the water delivery system, endangering the operation safety of the units and pressure waterways. Therefore, it is necessary to conduct detailed simulation calculations and analysis of the transition processes that may occur in the actual operation of reversible units.

[0003] The inventors have found that in the calculation of the hydraulic transition process, the water supply system is often divided into sections and each section of the pipeline is input into the calculation program. The input content includes parameters such as pipe length, cross-sectional area and hydraulic radius. However, since the water supply system is relatively long, it includes multiple components such as pressure steel pipe sections, steel-lined concrete sections, square-circle gradient sections, gradually expanding and contracting sections, and branch pipe sections, and the cross-sectional shape and size of the pipeline vary greatly. Therefore, if each pipe section is to be imported into the calculation program one by one, not only will the number of imported pipe sections be too large, increasing the program calculation amount, but also the calculation efficiency will be reduced. Summary of the invention

[0004] In order to solve the above problems, the present invention proposes a method and system for calculating the equivalent pipe diameter of a water delivery system of a pumped storage power station. The present invention first classifies the pipelines and then calculates the equivalent pipe diameters of different types of pipe sections, instead of importing each pipe section into a calculation program one by one, avoiding the process of independently calculating each pipe section, reducing the number of pipe sections that need to be imported, simplifying the calculation, reducing the amount of calculation, and improving work efficiency.

[0005] In order to achieve the above object, the present invention is implemented through the following technical solutions:

[0006] In a first aspect, the present invention provides a method for calculating an equivalent pipe diameter of a water delivery system of a pumped storage power station, comprising:

[0007] According to the layout diagram of the water delivery system of the pumped storage power station, the entire water delivery system is divided into pipe sections with constant diameter, diffusion sections, square and flat sections, and pipe sections with circular pipes of different diameters, gradually expanding and contracting sections, and square and round gradient sections;

[0008] For pipe sections with circular cross-sections and constant diameters, the pipe length and cross-sectional area are determined directly; for diffusion sections, the water volume when full is calculated, and the equivalent circular pipe cross-sectional area is obtained based on the water volume and the diffusion section length; for square flat sections, the square cross-sectional area is used as the equivalent circular pipe cross-sectional area; for pipe sections including circular pipes of different diameters, gradually expanding and contracting sections, and square-circular gradient sections, the water volumes of each pipe section are superimposed to obtain the total water volume of the pipe section, and the total water volume of the pipe section is divided by the total pipe length to obtain the equivalent circular pipe cross-sectional area;

[0009] Based on all the equivalent circular pipe cross-sectional areas obtained, the equivalent pipe diameters of the corresponding types of pipe sections are obtained.

[0010] Furthermore, the water delivery system is divided into a diffusion section at the upper reservoir inlet, a flat section in front of the upstream gate well, a pipe section from the upstream gate well to the starting point of the steel lining section, a circular gradient section behind the upstream gate well, a circular gradient section in front of the downstream gate well, a pipe section from the starting point of the steel lining section to the end point of the lower flat tunnel, a water diversion branch pipe, a steel lining section of the tailwater bifurcated pipe, a concrete section of the tailwater bifurcated pipe, a pipe section from the end point of the tailwater bifurcated pipe to the tailwater surge chamber, a pipe section from the tailwater surge chamber to the downstream gate well, a flat section behind the gate well, and a diffusion section at the lower reservoir outlet.

[0011] Furthermore, for the water diversion branch pipe, the tailwater bifurcation pipe, and the pipe section from the end point of the tailwater bifurcation pipe to the tailwater surge chamber, the pipe length and cross-sectional area are directly determined, and the hydraulic radius is equal to half of the cross-sectional radius.

[0012] Furthermore, for the diffusion section of the upper reservoir inlet and outlet and the diffusion section of the lower reservoir outlet, the water volume when full is calculated according to the prism volume formula based on the drawings, and then divided by the length of the diffusion section to obtain the equivalent circular pipe cross-sectional area. The equivalent circular pipe radius is calculated based on the cross-sectional area, and the hydraulic radius is equal to half of the equivalent circular pipe radius.

[0013] Furthermore, for the flat section in front of the upstream gate well and the flat section behind the gate well, the square cross-sectional area is taken as the cross-sectional area of ​​the equivalent circular pipe, and the hydraulic radius is equal to half of the radius of the equivalent circular pipe.

[0014] Furthermore, for the pipe section from the upstream gate well to the starting point of the steel lining section, the pipe section from the starting point of the steel lining section to the end point of the lower flat tunnel, the tailwater bifurcation pipe concrete section, and the tailwater surge chamber to the downstream gate well, these pipe sections are composed of circular pipes of different diameters, gradually expanding and contracting sections, and square-to-circular gradient sections. The total water volume of the pipe section is obtained by superimposing the water volume of each pipe section, and then divided by the total pipe length of the pipe section to obtain the cross-sectional area of ​​the equivalent circular pipe. The equivalent circular pipe radius of the pipe section is obtained based on the cross-sectional area, and the hydraulic radius of the pipe section is equal to half of the equivalent circular pipe radius.

[0015] Furthermore, for the square-to-circle gradient section behind the upstream gate well and the square-to-circle gradient section in front of the downstream gate well, the equivalent cross-sectional area is equal to the average of the cross-sectional areas of the square end and the round end. The equivalent cross-sectional area is multiplied by the length of the gradient section to obtain the water volume of the branch section. The water volume of branch sections of other shapes is calculated according to the volume formula of a cylinder or a truncated cone.

[0016] In a second aspect, the present invention further provides a system for calculating an equivalent pipe diameter of a water delivery system of a pumped storage power station, comprising:

[0017] The classification module is configured to: according to the layout diagram of the water delivery system of the pumped storage power station, divide the entire water delivery system into a pipe section with a constant pipe diameter, a diffusion section, a square flat section, and a pipe section composed of circular pipes with different pipe diameters, a gradually expanding and contracting section, and a square and round gradient section;

[0018] The first calculation module is configured as follows: for a pipe section with a circular cross-section and a constant pipe diameter, the pipe length and cross-sectional area are directly determined; for a diffusion section, the water volume when filled is calculated, and the equivalent circular pipe cross-sectional area is obtained according to the water volume and the diffusion section length; for a square flat section, the square cross-sectional area is used as the equivalent circular pipe cross-sectional area; for a combined pipe section including circular pipes of different diameters, a gradually expanding and contracting section, and a square-circular gradient section, the water volume of each pipe section is superimposed to obtain the total water volume of the pipe section, and the equivalent circular pipe cross-sectional area is obtained according to the total water volume of the pipe section and the total pipe length;

[0019] The second calculation module is configured to obtain an equivalent pipe diameter of a corresponding type of pipe segment according to all obtained equivalent circular pipe cross-sectional areas.

[0020] In a third aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the steps of the method for calculating the equivalent pipe diameter of the water transmission system of a pumped-storage power station described in the first aspect.

[0021] In a fourth aspect, the present invention further provides an electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, wherein when the processor executes the program, the steps of the method for calculating the equivalent pipe diameter of the water transmission system of a pumped-storage power station described in the first aspect are implemented.

[0022] In a fifth aspect, the present invention further provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the method for calculating the equivalent pipe diameter of the water transmission system of a pumped-storage power station described in the first aspect are implemented.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] The present invention first divides the entire water delivery system into pipe sections with constant pipe diameters, diffusion sections, square flat sections, and pipe sections composed of circular pipes with different pipe diameters, gradually expanding and contracting sections, and square and circular gradient sections according to a layout diagram of a water delivery system of a pumped storage power station; then, for pipe sections of different categories, the cross-sectional areas of corresponding equivalent circular pipes are determined according to different calculation methods; finally, according to the obtained cross-sectional areas of all equivalent circular pipes, the equivalent pipe diameters of corresponding types of pipe sections are obtained; by first classifying and then calculating the equivalent pipe diameters of different types of pipe sections, the method of importing each pipe section into a calculation program one by one is replaced, thereby avoiding the process of independently calculating each pipe section, reducing the number of pipe sections that need to be imported, simplifying the calculation, reducing the amount of calculation, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification that constitute a part of this embodiment are used to provide a further understanding of this embodiment. The schematic embodiments of this embodiment and their descriptions are used to explain this embodiment and do not constitute improper limitations on this embodiment.

[0026] Figure 1 This is a flow chart of Example 1 of the present invention. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0028] It should be noted that the following detailed descriptions are exemplary and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0029] Embodiment 1:

[0030] As described in the background technology, in the calculation of the hydraulic transition process of a pumped-storage power station, if the parameters of each subdivided pipe section are imported into the calculation program one by one according to the differences in lining materials, cross-sectional shapes and sizes, etc., it will not only increase the workload of data input, but also too many pipe sections will cause the program calculation efficiency to decrease.

[0031] In response to the above problems, Figure 1 As shown, this embodiment provides a method for calculating the equivalent pipe diameter of the water delivery system of a pumped-storage power station, and performs equivalent calculation on some pipe sections in the water delivery system of the pumped-storage power station after merging, which can reduce the workload of importing early data into the software and improve the calculation efficiency of the program, thereby simplifying the calculation program and improving work efficiency.

[0032] It can be understood that the calculated pipe diameter data can provide a reliable data basis for the unit pressure regulation of the water supply system of the pumped storage power station, as well as the maintenance and design of the pressure waterway.

[0033] In some embodiments, optionally, the entire water delivery system is first divided into several pipe sections according to the layout diagram of the water delivery and power generation system of the pumped-storage power station. For example, taking a pumped-storage project in a certain area as an example, the water delivery system is divided into a diffusion section of the upper reservoir water inlet, a flat section in front of the upstream gate well, a pipe section from the upstream gate well to the starting point of the steel lining section, a circular gradient section behind the upstream gate well, a circular gradient section in front of the downstream gate well, a pipe section from the starting point of the steel lining section to the end point of the lower flat tunnel, a water diversion steel bifurcation pipe, a water diversion branch pipe, a volute, a tailwater pipe, a tailwater bifurcation steel lining section, a tailwater bifurcation concrete section, a pipe section from the end point of the tailwater bifurcation to the tailwater surge chamber, a pipe section from the tailwater surge chamber to the downstream gate well, a flat section behind the gate well, and a diffusion section of the lower reservoir water outlet.

[0034] Among them, in some embodiments, optionally, for pipe sections with circular cross-sections and constant diameters such as the water diversion branch pipe, the tailwater bifurcated pipe steel lining section, and the tailwater bifurcated pipe end point to the tailwater surge chamber section, the pipe length and cross-sectional area can be directly input, and the hydraulic radius can be input as half of the cross-sectional radius, that is:

[0035]

[0036] Where r1 is the radius of the pipe section with a circular cross-section and constant diameter; R1 is the hydraulic radius of the pipe section; S1 is the cross-sectional area of ​​the pipe section.

[0037] In some embodiments, optionally, for the diffuser section of the upper reservoir inlet and outlet and the diffuser section of the lower reservoir outlet, the water volume when the interior is full can be calculated according to its detailed drawings. The volume can be calculated according to the prism volume formula and then divided by the diffuser section length to obtain the equivalent circular pipe cross-sectional area. The equivalent circular pipe radius can be obtained according to the cross-sectional area, and the hydraulic radius is input as half of the equivalent circular pipe radius, that is:

[0038]

[0039]

[0040] Where V 扩 is the volume of water when the diffusion section is full; L 扩 is the length of the diffusion section; S 进 is the inlet cross-sectional area; S 出 is the outlet cross-sectional area; S2 is the equivalent circular pipe cross-sectional area of ​​the diffusion section; r2 is the equivalent circular pipe radius of the pipe section; R2 is the hydraulic radius of the pipe section.

[0041] In some embodiments, optionally, for the square flat section before the upstream gate well and after the downstream gate well, the square cross-sectional area can be used as the cross-sectional area of ​​the equivalent circular pipe, and the hydraulic radius is input into the program at half of the radius of the equivalent circular pipe, that is:

[0042] S3=S 方

[0043]

[0044] In the formula, S 方 is the square cross-sectional area of ​​the square flat section; S3 is the equivalent circular pipe cross-sectional area of ​​the square flat section; r3 is the equivalent circular pipe radius of the pipe section; R3 is the hydraulic radius of the pipe section.

[0045] In some embodiments, optionally, for the pipe section from the upstream gate well to the starting point of the steel lining section, the pipe section from the starting point of the steel lining section to the end point of the lower flat tunnel, the tailwater bifurcated pipe concrete section, the tailwater surge chamber to the downstream gate well, etc., which are composed of circular pipes of different diameters, gradually expanding and contracting sections, and square-circle gradient sections, the total water volume of the pipe section can be obtained by superimposing the water volume of each branch pipe section, and then divided by the total pipe length of the pipe section to obtain the cross-sectional area of ​​the equivalent circular pipe. The equivalent circular pipe radius of the pipe section can be obtained according to the cross-sectional area, and the hydraulic radius of the pipe section can be input into the calculation program according to half of the equivalent circular pipe radius, that is:

[0046] V 组合 =V1+V2+…+V n

[0047]

[0048] Where V1, V2, …, V n V is the volume of water when each branch pipe section is full; 组合 is the total volume of water when the combined pipe section is full; S4 is the equivalent circular pipe cross-sectional area of ​​the combined pipe section; r4 is the equivalent circular pipe radius of the pipe section; and R4 is the hydraulic radius of the pipe section.

[0049] In some embodiments, optionally, in each branch section, for the square-circle gradient section behind the upstream gate well and the square-circle gradient section in front of the downstream gate well, the equivalent cross-sectional area can be calculated according to the average of the cross-sectional areas of the square end and the round end, and the equivalent cross-sectional area is multiplied by the length of the gradient section to obtain the water volume of the branch section. The water volume of the other branch sections with regular shapes is directly calculated according to the volume formula of a cylinder or a truncated cone, that is:

[0050]

[0051] V 圆柱 =S 圆柱 L 圆柱

[0052]

[0053] Where V 渐变 L is the volume of water when the square and circular gradient pipe section is full; 渐变 S is the length of the square-circle gradient pipe section; 方 S is the cross-sectional area of ​​the square end of the square-circle gradient pipe section;圆 V is the cross-sectional area of ​​the circular end of the square-circle gradient pipe section; 圆柱 A is the volume of water when the cylindrical pipe section is full; 圆柱 L is the cross-sectional area of ​​the cylindrical pipe section; 圆柱 V is the length of the cylindrical pipe section; 圆台 L is the water volume when the cone pipe section is full; 圆台 is the length of the truncated cone section; r 进 r is the inlet radius of the cone branch section; 出 is the outlet radius of the cone branch section.

[0054] Embodiment 2:

[0055] This embodiment provides a method for calculating the equivalent pipe diameter of a water delivery system of a pumped storage power station, including:

[0056] The classification module is configured to: according to the layout diagram of the water delivery system of the pumped storage power station, divide the entire water delivery system into pipe sections with constant pipe diameter, diffusion sections, square and flat sections, and pipe sections with circular pipes of different pipe diameters, gradually expanding and contracting sections, and square and circular gradient sections;

[0057] The first calculation module is configured as follows: for a pipe section with a circular cross-section and a constant pipe diameter, the pipe length and cross-sectional area are directly determined; for a diffusion section, the water volume when filled is calculated, and the equivalent circular pipe cross-sectional area is obtained according to the water volume and the diffusion section length; for a square flat section, the square cross-sectional area is used as the equivalent circular pipe cross-sectional area; for a combined pipe section including circular pipes of different diameters, a gradually expanding and contracting section, and a square-circular gradient section, the water volume of each pipe section is superimposed to obtain the total water volume of the pipe section, and the equivalent circular pipe cross-sectional area is obtained according to the total water volume of the pipe section and the total pipe length;

[0058] The second calculation module is configured to obtain an equivalent pipe diameter of a corresponding type of pipe segment according to all obtained equivalent circular pipe cross-sectional areas.

[0059] The working method of the system is the same as the method for calculating the equivalent pipe diameter of the water delivery system of the pumped storage power station in Example 1, and will not be repeated here.

[0060] Embodiment 3:

[0061] This embodiment provides a computer-readable storage medium on which a computer program is stored. When the program is executed by a processor, the steps of the method for calculating the equivalent pipe diameter of the water delivery system of a pumped-storage power station described in Example 1 are implemented.

[0062] Embodiment 4:

[0063] This embodiment provides an electronic device, including a memory, a processor, and a computer program stored in the memory and capable of running on the processor. When the processor executes the program, the steps of the method for calculating the equivalent pipe diameter of the water transmission system of the pumped-storage power station described in Example 1 are implemented.

[0064] Embodiment 5:

[0065] This embodiment provides a computer program product, which includes a computer program. When the computer program is executed by a processor, the steps of the method for calculating the equivalent pipe diameter of the water delivery system of a pumped-storage power station described in Example 1 are implemented.

[0066] The above description is only a preferred embodiment of the present embodiment and is not intended to limit the present embodiment. For those skilled in the art, the present embodiment may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment shall be included in the protection scope of the present embodiment.

Claims

1. A method for calculating the equivalent pipe diameter of a water delivery system of a pumped storage power station, characterized in that: include: According to the layout diagram of the water delivery system of the pumped storage power station, the entire water delivery system is divided into pipe sections with constant diameter, diffusion sections, square flat sections, and pipe sections composed of circular pipes with different diameters, gradually expanding and contracting sections, and square and round gradient sections; For pipe sections with circular cross-sections and constant diameters, the pipe length and cross-sectional area are determined directly; for diffusion sections, the water volume when filled is calculated, and the equivalent circular pipe cross-sectional area is obtained based on the water volume and the diffusion section length; for square flat sections, the square cross-sectional area is used as the equivalent circular pipe cross-sectional area; for pipe sections composed of circular pipes of different diameters, gradually expanding and contracting sections, and square-circular gradient sections, the total water volume of the pipe section is obtained by superimposing the water volumes of each pipe section, and the equivalent circular pipe cross-sectional area is obtained based on the total water volume of the pipe section; Based on all the equivalent circular pipe cross-sectional areas obtained, the equivalent pipe diameters of the corresponding types of pipe sections are obtained.

2. A method for calculating equivalent pipe diameter of a water delivery system of a pumped storage power station as claimed in claim 1, characterized in that: The water delivery system is divided into the diffusion section of the upper reservoir water inlet, the flat section in front of the upstream gate well, the pipe section from the upstream gate well to the starting point of the steel lining section, the circular gradient section behind the upstream gate well, the circular gradient section in front of the downstream gate well, the pipe section from the starting point of the steel lining section to the end point of the lower flat tunnel, the water diversion branch pipe, the steel lining section of the tailwater bifurcated pipe, the concrete section of the tailwater bifurcated pipe, the pipe section from the end point of the tailwater bifurcated pipe to the tailwater surge chamber, the pipe section from the tailwater surge chamber to the downstream gate well, the flat section behind the gate well and the diffusion section of the lower reservoir water outlet.

3. A method for calculating equivalent pipe diameter of a water delivery system of a pumped storage power station as claimed in claim 2, characterized in that: For the water diversion branch pipe, the tailwater bifurcated pipe, and the pipe section from the end point of the tailwater bifurcated pipe to the tailwater surge chamber, the pipe length and cross-sectional area are directly determined, and the hydraulic radius is equal to half of the cross-sectional radius.

4. A method for calculating equivalent pipe diameter of a water delivery system of a pumped storage power station as claimed in claim 2, characterized in that: For the diffusion section of the upper reservoir inlet and outlet and the diffusion section of the lower reservoir outlet, calculate the water volume when full according to the drawings and the prism volume formula, and then divide it by the length of the diffusion section to get the equivalent circular pipe cross-sectional area. The equivalent circular pipe radius is calculated based on the cross-sectional area, and the hydraulic radius is equal to half of the equivalent circular pipe radius.

5. A method for calculating equivalent pipe diameter of a water delivery system of a pumped storage power station as claimed in claim 2, characterized in that: For the flat section in front of the upstream gate well and the flat section behind the gate well, the square cross-sectional area is taken as the cross-sectional area of ​​the equivalent circular pipe, and the hydraulic radius is equal to half of the radius of the equivalent circular pipe.

6. A method for calculating equivalent pipe diameter of a water delivery system of a pumped storage power station as claimed in claim 2, characterized in that: For the pipe section from the upstream gate well to the starting point of the steel lining section, the pipe section from the starting point of the steel lining section to the end point of the lower flat tunnel, the tailwater bifurcation pipe concrete section, and the tailwater surge chamber to the downstream gate well, the pipe section is composed of circular pipes of different diameters, gradually expanding and contracting sections, and square-to-circular gradient sections. The water volume of each pipe section is superimposed to obtain the total water volume of the pipe section, and then divided by the total pipe length of the pipe section to obtain the cross-sectional area of ​​the equivalent circular pipe. The equivalent circular pipe radius of the pipe section is calculated based on the cross-sectional area, and the hydraulic radius of the pipe section is equal to half of the equivalent circular pipe radius.

7. A method for calculating equivalent pipe diameter of a water delivery system of a pumped storage power station as claimed in claim 2, characterized in that: For the square-to-circle gradient section behind the upstream gate well and the square-to-circle gradient section in front of the downstream gate well, the equivalent cross-sectional area is equal to the average of the cross-sectional areas of the square end and the round end. The equivalent cross-sectional area is multiplied by the length of the gradient section to obtain the water volume of the branch section. The water volume of branch sections of other shapes is calculated according to the volume formula of a cylinder or a truncated cone.

8. A method for calculating the equivalent pipe diameter of a water delivery system of a pumped storage power station, characterized in that: include: The classification module is configured to: according to the layout diagram of the water delivery system of the pumped storage power station, divide the entire water delivery system into pipe sections with constant pipe diameter, diffusion sections, square and flat sections, and pipe sections with circular pipes of different pipe diameters, gradually expanding and contracting sections, and square and circular gradient sections; The first calculation module is configured as follows: for a pipe section with a circular cross-section and a constant diameter, the pipe length and cross-sectional area are directly determined; for a diffusion section, the water volume when filled is calculated, and the equivalent circular pipe cross-sectional area is obtained according to the water volume and the diffusion section length; for a square flat section, the square cross-sectional area is used as the cross-sectional area of ​​the equivalent circular pipe; for a pipe section composed of circular pipes of different diameters, gradually expanding and contracting sections, and square-circular gradient sections, the water volumes of each pipe section are superimposed to obtain the total water volume of the pipe section, and the equivalent circular pipe cross-sectional area is obtained according to the total water volume of the pipe section and the total pipe length; The second calculation module is configured to obtain an equivalent pipe diameter of a corresponding type of pipe segment according to all obtained equivalent circular pipe cross-sectional areas.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and capable of running on the processor, characterized in that: When the processor executes the program, the steps of the method for calculating the equivalent pipe diameter of the water delivery system of a pumped storage power station as described in any one of claims 1 to 7 are implemented.

10. A computer program product, characterized in that The computer program product includes a computer program, and when the computer program is executed by a processor, the steps of the method for calculating the equivalent pipe diameter of the water delivery system of a pumped-storage power station as described in any one of claims 1 to 7 are implemented.

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