Method, equipment and medium for correcting the optimal generator of pump operating conditions of variable speed pumped storage unit

Abstract

The present application belongs to the technical field of pumped storage, and specifically provides a method, device and medium for correcting the optimal generator of the pump operating condition of a variable speed pumped storage unit. The method for correcting the optimal generator of the pump operating condition of a variable speed pumped storage unit selects the cooperative operation data of the water pump under the rated head on the original optimal speed generator and the original optimal opening generator, and corrects the data. During the correction, several original operating points are selected for correction, and the speed and opening of the real machine are adjusted simultaneously to achieve the reference power, and the speed and opening combination with the highest efficiency are selected to obtain the corrected operating point, and then the corrected P‑n curve and the corrected P‑α curve are drawn according to the corrected operating point data. Finally, according to the water pump similarity law, the corrected optimal speed generator and the corrected optimal opening generator can be obtained. When the real machine runs at the corrected speed / opening under the water pump working condition, the actual input can just reach the reference power and the efficiency reaches the highest.

Description

Technical Field

[0001] The present application belongs to the technical field of pumped storage, and specifically provides a method, device and medium for correcting an optimal generator for a variable-speed pumped storage unit pump operating condition. Background Art

[0002] Variable speed technology has obvious advantages in achieving adjustable pump input under pumped storage unit conditions, eliminating the unit's anti-regulation characteristics, increasing the unit's power regulation range, and improving the unit's power response speed, which can effectively improve the unit's peak and frequency regulation capabilities. For variable speed pumped storage units, the input of its pump conditions is jointly determined by the speed and opening. When the unit is operating normally, the optimal speed and opening are found based on the reference power and head, and the unit operates at the optimal speed and opening.

[0003] At present, the optimal opening and optimal speed, that is, the optimization data of the optimal generator, are determined by the test data of the model wheel. On the one hand, for the newly installed unit, the optimal speed generator is obtained by the model test data of the model wheel, which is different from the actual operation of the real machine wheel; on the other hand, the variable speed pumped storage unit has been running for a long time, and the wheel characteristics and hydrological conditions may change, so that its actual operation is different from the initial optimal generator. These two reasons lead to the fact that when the unit is running according to the optimal speed and optimal opening obtained by the optimal generator of the model wheel, its actual absorbed power is not equal to the reference power and the efficiency is not the highest. Because the input of the pump working condition of the pumped storage unit is proportional to the cube of the speed, a slight difference in speed will lead to a large fluctuation in power. Therefore, it is necessary to correct the optimal generator of the model wheel. When the unit is running according to the corrected optimal generator, it can ensure that the actual input of the real machine just reaches the reference power and the efficiency is the highest. At present, there is no correction scheme for the optimization result of the optimal generator of the variable speed pumped storage unit water pump operating condition. This application is the first to propose a correction scheme, which has the advantages of small data volume and simple operation process. Summary of the invention

[0004] In order to solve the problems existing in the prior art, the present application provides a method for correcting an optimal generator for pump operating conditions of a variable-speed pumped storage unit, thereby improving the working efficiency of the unit during actual operation.

[0005] The embodiment of the present application provides a method for correcting a variable speed pumped storage unit pump operating condition optimal generator, comprising the following steps:

[0006] Get the original optimal generator of the variable speed pumped storage unit under pumping conditions, including the original optimal speed generator Three-dimensional surface and original optimal opening generator Three-dimensional surfaces;

[0007] Based on the above three-dimensional surface, the rated head is obtained Three-dimensional curve of pump coordinated operation under and 3D curves ;

[0008] Select rated lift Three-dimensional curve of pump coordinated operation under and 3D curves Several original operating points on the surface, and obtain the original operating point set;

[0009] Run the real machine on the three-dimensional curve of the pump joint operation and 3D curves By adjusting the speed and opening of the real machine, the above original operating point is corrected to obtain the corrected optimal speed and the corrected optimal opening, thereby obtaining several corrected operating points and a corrected operating point set;

[0010] Plotting rated head based on modified operating point set The modified Pn curve and modified P-α curve under the

[0011] Based on rated head The modified Pn curve and the modified P-α curve under the water pump are drawn according to the similarity law of the water pump to obtain the modified optimal speed generator. Three-dimensional surface and modified optimal opening generator Three-dimensional surfaces;

[0012] in, is the reference power, P is the input power, is the rotation speed, is the optimal speed, H is the head, is the rated head, Q is the flow rate, is the opening, is the optimal opening.

[0013] In some embodiments, when selecting the rated lift Three-dimensional curve of pump coordinated operation under and 3D curves When the original operating point on the two three-dimensional curves is the same original operating point, the original operating point selected on the two three-dimensional curves is the same original operating point, that is, the reference power corresponding to the same original operating point on the two three-dimensional curves and rated head same.

[0014] In some embodiments, when selecting the rated lift Three-dimensional curve of pump coordinated operation under and 3D curves When the original working point is reached, the head is maintained. Same as reference power The coordinate axis is used as the selection basis, and the three-dimensional curves of the pump cooperative operation are selected with uniform step length. and 3D curves Several reference powers The corresponding speed and opening, the point obtained ( , , )and( , , ) is the original operating point, where m≧1 is the count of the modified operating point; the reference power The uniform step size range is 1MW-10MW.

[0015] In some embodiments, when the original operating point is corrected, the unit reference power corresponding to the original operating point is maintained. Constant, adjust the speed and opening of the real machine until the actual input P reaches the reference power when the real machine is in steady state , and the flow Q The maximum value is obtained, and the corrected optimal speed and the corrected optimal opening of the operating point are obtained, thereby obtaining the corrected operating point. After correcting each original operating point in the original operating point set in turn, a corrected operating point set is obtained.

[0016] In some embodiments, the rated head is obtained by using the Lagrange interpolation method according to the modified operating point set. The analytical formula of the corrected Pn curve and the rated head The analytical formula of the modified P-α curve is obtained; the rated head is then plotted according to the analytical formula The corrected Pn curve and corrected P-α curve under.

[0017] In some embodiments, the water pump similarity law is:

[0018] ;

[0019] in, is the rated head; It refers to the other lifts except the rated lift within the normal operating range of the pump; is the speed at rated head; It is the speed at other heads except the rated head within the normal operating range of the pump.

[0020] In some embodiments, according to the water pump similarity law, the pump working condition of the unit is obtained when the head is The corresponding speed Speed ​​at rated head The conversion relationship is:

[0021] ;

[0022] Substitute this conversion relationship into the rated head The analytical expression of the modified Pn curve under the condition of The modified Pn curve is obtained The three-dimensional surface is the modified optimal speed generator;

[0023] Based on the rule that the opening of similar working conditions is the same, the rated head Based on the modified P-α curve under The three-dimensional surface is the modified optimal opening generator.

[0024] The present application also provides a variable speed pumped storage unit pump operating condition optimal generator correction device, including a storage device and one or more processors, the storage device is used to store one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned variable speed pumped storage unit pump operating condition optimal generator correction method.

[0025] The present application also provides a medium, wherein the medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned variable-speed pumped storage unit pump operating condition optimal generator correction method is implemented.

[0026] Compared with the prior art, the present invention adopts the original optimal speed generator of the model wheel to generate the optimal speed generator of the model wheel. Three-dimensional surface and original optimal opening generator Get the rated lift based on the three-dimensional surface Three-dimensional curve of pump coordinated operation under and 3D curves , and then in the three-dimensional curve and 3D curves Select several original operating points and run the real machine at the rated head. Three-dimensional curve of pump coordinated operation under and 3D curves The operating point is corrected by adjusting the speed and opening. The correction of the three-dimensional surface is simplified to the correction of the three-dimensional curve. By obtaining the corrected optimal speed generator through the water pump similarity law, the technical problems of large amount of correction data, large amount of calculation and difficult implementation in efficiency optimization are greatly solved. And through the real machine operation adjustment, the speed and opening correction are obtained, so that when the unit is operated according to the corrected optimal generator, it can ensure that its actual input just reaches the reference power and the efficiency is the highest.

[0027] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are specifically cited below and described in detail with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of the process flow of the variable speed pumped storage unit efficiency optimization correction method of the present application is shown;

[0030] Figure 2 Shows the rated head for this application Three-dimensional curve of pump coordinated operation under ;

[0031] Figure 3 Shows the rated head for this application Three-dimensional curve of pump coordinated operation under ;

[0032] Figure 4 Shows the rated head before and after the modification of this application Water pump joint working condition Contrast curves;

[0033] Figure 5 Shows the rated head before and after the modification of this application Water pump cooperative working condition Contrast curves;

[0034] Figure 6 Shows the rated head before and after the modification of this application QP comparison curve of the water pump cooperative working condition;

[0035] FIG7( a ) shows a modified optimal speed generator of a variable speed pumped storage unit in a water pumping condition in the present application;

[0036] FIG7( b ) shows the modified optimal opening generator of the variable speed pumped storage unit in the water pump working condition in the present application;

[0037] Figure 8 The operating efficiency of the variable speed pumped storage unit water pump before the revision of this application is shown;

[0038] Fig. 9 The modified operating efficiency of the variable speed pumped storage unit water pump in this application is shown. DETAILED DESCRIPTION

[0039] The term "comprising" in the specification of the present application is synonymous with "including" and "containing", and is inclusive or open-ended and does not exclude additional unrecited elements or method steps.

[0040] It should be noted that similar numbers and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance. The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0041] Reference to "embodiments" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0042] The present application is described in detail below with reference to the accompanying drawings and specific embodiments.

[0043] Example

[0044] The variable speed pumped storage unit pump operating condition optimal generator correction method in this embodiment. Steps are as follows Figure 1 As shown:

[0045] The steps include:

[0046] S1. Obtain the original optimal generator of the variable speed pumped storage unit under pump working conditions, including the original optimal speed generator Three-dimensional surface and original optimal opening generator Three-dimensional surface; based on the above three-dimensional surface, the rated head is obtained Three-dimensional curve of pump coordinated operation under and 3D curves ,like Figure 2-3 as shown in .

[0047] in, is the reference power, P is the input power, is the rotation speed, is the optimal speed, H is the head, is the rated head, Q is the flow rate, is the opening, is the optimal opening, and the opening is the guide vane opening of the variable speed pumped storage unit.

[0048] S2. Select rated lift Three-dimensional curve of pump coordinated operation under and 3D curves Several original operating points on the , and get the original operating point set.

[0049] Select the rated lift Three-dimensional curve of pump coordinated operation under and 3D curves The original operating point on the two three-dimensional curves must be the same original operating point, that is, the reference power corresponding to the same original operating point on the two three-dimensional curves. and rated head When selecting, refer to the power The coordinate axis is used as the selection basis, and the three-dimensional curves of the pump cooperative operation are selected with uniform step length. and 3D curves On several Corresponding and That is the original operating point; The uniform step length interval is [1MW, 10MW]. like Figure 2 As shown, the black dots on the curve are the three-dimensional curves of the pump coordinated operation The original operating point set selected on {( , , ), , , )…( , , )};like Figure 3 As shown, the black dots on the curve are the three-dimensional curves of the pump coordinated operation The original operating point set selected on {( , , ), , , )…( , , )}, where m≧1, is the count of the modified operating point.

[0050] In some embodiments, the first original operating point to be corrected is selected from the starting point on the three-dimensional curve, that is, the reference power The point corresponding to the minimum is selected first, and then the original working point to be corrected is selected according to Gradually increase, such as every interval 1MW, 2MW, 5MW, 6MW, 8MW, 10MW, etc. are selected according to the rule of selecting a point until the end of the curve is selected. The smaller the step size, the denser the values ​​are and the higher the correction accuracy.

[0051] S3. Run the real machine on a three-dimensional curve and 3D curves By adjusting the speed and the opening, the above original operating point is adjusted to obtain a corrected optimal speed and a corrected optimal opening, thereby obtaining several corrected operating points and a corrected operating point set.

[0052] Adjust the real machine to the rated head Three-dimensional curve of pump coordinated operation under and When the original operating point set is corrected in turn, the reference power of the unit corresponding to each original operating point is maintained. Constant, adjust the speed, and adjust the opening at the same time until the actual input is in a steady state P Reach reference power Due to the input force of the pump P By speed n and opening Therefore, the actual input force when the real machine is in steady state P When the speed is constant, it will correspond to different combinations of speed and opening. Therefore, when making corrections, it is necessary to adjust the speed and opening during the actual operation of the real machine to determine the unit when the input reaches the reference power. When the steady state is reached, the speed corresponding to the maximum flow rate Q is n and opening Combination relationship. By detecting the flow Q to monitor efficiency Size, flow Q The larger the efficiency The larger the flow Q The size of the power plant is monitored by special monitoring equipment. When the speed and opening are adjusted to the true machine steady state, the actual input power P reaches the reference power And flow Q When it is at its maximum, it is the corrected optimal speed corresponding to the operating point. and corrected optimal opening .

[0053] Corrected optimal speed and corrected optimal opening , thus obtaining several corrected operating points, that is, obtaining a three-dimensional curve The modified operating point on {( , , ), , , )…( , , )}, and the three-dimensional curve The modified operating point {( , , ), , , )…( , , )}, thus obtaining the modified operating point set.

[0054] S4. Draw the rated head according to the modified operating point set The following amendments Pn Curves and corrections P-α curve.

[0055] In this embodiment, the Lagrange interpolation method is used to draw the rated head. The following amendments Pn Curves and corrections P-α The process is as follows:

[0056] 1) According to the above three-dimensional curve The modified operating point set on Point set {( , ), , ), , ), , ), … ( , )}, set n=m-1, and get the modified operating point set of Pn as ( , ) , ( , ) , ( , ) , ( , ),……,( , ), and then set the basis function as:

[0057] (1);

[0058] (2);

[0059] (3);

[0060] (4);

[0061] …

[0062] (5).

[0063] 2) Based on the basis function, the rated head drawn using the Lagrange interpolation method is obtained The analytical formula of the modified Pn curve under:

[0064] ┄ (6).

[0065] 3) In the same way, according to the above three-dimensional curve The modified operating point set on Point set {( , ), , ), , ), , ), … ( , )}, set n = m-1, and get P- The modified operating point set ( , ),( , ),( , ),( , ),……,( , ), we can further get the analytical formula of the modified P-α curve:

[0066] ┄ (7).

[0067] 4) Then, according to the analytical formulas (6) and (7), the modified Pn curve and the modified P-α curve are plotted, as shown in Figure 4-5 shown.

[0068] The pumped storage unit converts electrical energy into mechanical energy of water when the pump is running. Its highest efficiency point should be when the pumping volume is the largest under the same head and input, that is, the flow rate Q is the largest. The rated head drawn according to the power and flow data monitored in real time during correction Before and after correction QP Contrast curves, such as Figure 6 As shown, it can be seen that under rated head, when the input force P is the same, the flow rate Q of the QP curve after correction is greater than or equal to the flow rate Q on the QP curve before correction, that is, when the head and input force are constant, the corrected efficiency of each corrected operating point is greater than or equal to the efficiency before correction. It can be seen that after the speed and opening are corrected in this application, when the unit is operated according to the corrected optimal generator, it can be ensured that its actual input just reaches the reference power and the efficiency is the highest.

[0069] S5. Based on rated head The modified Pn curve under the water pump similarity law (8) is used to draw the modified optimal speed generator Three-dimensional surface and modified optimal opening generator Three-dimensional surface.

[0070] The similarity law of water pump is:

[0071] (8);

[0072] in, is the rated head; It refers to the other lifts except the rated lift within the normal operating range of the pump; is the speed at rated head; for The speed at which the

[0073] According to the water pump similarity law, the pump working condition of the unit is The corresponding speed Speed ​​at rated head The conversion relationship is shown in formula (9):

[0074] (9);

[0075] From formula (9), we can know that the head Corresponding speed With rated head The speed under The conversion coefficient between With rated head OK, when the lift When it is determined, different lifts can be obtained The speed value .

[0076] Corrected optimal speed at rated head Corrected optimal speed under different lifts The water pump similarity law is also satisfied between them, and the optimal speed is corrected under the rated head. Corrected optimal speed under different lifts Substituting into formula (9), we get:

[0077] (10);

[0078] Select several heads different from the rated head within the normal operating range of the pump, such as: , , … , then according to the conversion relationship in formula (10), we can determine , , … The corresponding corrected optimal speed is, , , … , and then substitute the optimal modified speed corresponding to the above different heads into formula (6), that is, based on the modified Pn curve under rated head, the corresponding different The modified Pn curve under the condition is finally drawn to obtain the three-dimensional surface of the modified optimal speed generator. , as shown in Figure 7(a).

[0079] In some embodiments, different lifts within the normal operating range of the water pump may be selected in uniform steps.

[0080] Based on the rule that the opening of similar operating points is the same, the three-dimensional surface of the modified optimal opening generator is drawn based on the modified P-α curve. ;

[0081] Regarding the rule that the opening of similar operating points is the same, for example: it is known that at the rated head The corrected optimal speed at a certain operating point under , the corresponding corrected optimal opening is ; According to formula (10), when the head is When , the corresponding corrected optimal speed is , the corrected optimal opening is still ,Right now( , , )and( , , ) are similar operating points, so their corresponding openings are the same, both are Based on this, the modified P-α curve of the pump joint opening can be converted into the modified P-α curve of the pump joint opening The surface is obtained, that is, the modified optimal opening generator is obtained, as shown in Figure 7(b).

[0082] The unit efficiency of the real machine under pump conditions guided by the original optimal generator like Figure 8 As shown, the modified optimal generator obtained according to the optimal generator correction method for variable speed pumped storage unit pump working condition in this application is effective in guiding the efficiency of the real machine in pump working condition. like Fig. 9 As shown, it can be seen that under the same head H and the same input, the efficiency of the modified optimal generator guiding the real machine in pump working conditions is significantly improved.

[0083] In some embodiments, a variable speed pumped storage unit pump operating condition optimal generator correction device is also provided, including a storage device and one or more processors, the storage device is used to store one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the above-mentioned variable speed pumped storage unit pump operating condition optimal generator correction method, to avoid repetition, it will not be repeated here.

[0084] In some embodiments, a medium is also provided, wherein the medium stores a computer program, and when the computer program is executed by a processor, the above-mentioned variable speed pumped storage unit pump operating condition optimal generator correction method is implemented. To avoid repetition, it will not be repeated here.

[0085] The variable speed pumped storage unit pump operating condition optimal generator correction method described in the present application is to modify the original optimal speed generator Three-dimensional surface and original optimal opening generator Rated head on three-dimensional curved surface Three-dimensional curve of pump coordinated operation under Curve and The curve is used to adjust the speed and opening of the real machine for optimal correction, and then the corrected speed generator is obtained through the water pump similarity law, which greatly solves the technical problem of too much efficiency optimization correction data and difficulty in implementation. And the operating point is corrected by adjusting the speed of the real machine, so that the corrected optimal speed generator is closer to the operating conditions of the real machine. When the unit is operated according to the corrected optimal generator, it can ensure that its actual input just reaches the reference power and greatly improve the actual operating efficiency of the unit.

[0086] The embodiments of the present application are introduced in detail above. Specific examples are used in this article to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method and core idea of ​​the present application. At the same time, for general technical personnel in this field, according to the idea of ​​the present application, there will be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A method for correcting the optimal generator of a variable speed pumped storage unit pump operating condition, characterized in that: The steps include: Get the original optimal generator of the variable speed pumped storage unit under pumping conditions, including the original optimal speed generator Three-dimensional surface and original optimal opening generator Three-dimensional surfaces; Based on the above three-dimensional surface, the rated head is obtained Three-dimensional curve of pump coordinated operation under and 3D curves ; Select rated lift Three-dimensional curve of pump coordinated operation under and 3D curves Several original operating points on the surface, and obtain the original operating point set; Run the real machine on the three-dimensional curve of the pump joint operation and 3D curves By adjusting the speed and opening of the real machine, the above original operating point is corrected to obtain the corrected optimal speed and the corrected optimal opening, thereby obtaining several corrected operating points and a corrected operating point set; Plotting rated head based on modified operating point set The modified Pn curve and modified P-α curve under the Based on rated head The modified Pn curve and the modified P-α curve under the same conditions are used to draw the modified optimal speed generator according to the similarity law of the water pump and the law that the opening of similar operating points is the same. Three-dimensional surface and modified optimal opening generator Three-dimensional surfaces; in, is the reference power, P is the input power, is the rotation speed, is the optimal speed, H is the head, is the rated head, Q is the flow rate, is the opening, is the optimal opening.

2. The method for correcting the optimal generator of the variable speed pumped storage unit pump operating condition according to claim 1, characterized in that: Select the rated lift Three-dimensional curve of pump coordinated operation under and 3D curves When the original operating point on the two three-dimensional curves is the same original operating point, the original operating point selected on the two three-dimensional curves is the same original operating point, that is, the reference power corresponding to the same original operating point on the two three-dimensional curves and rated head same.

3. The method for correcting the optimal generator of the variable speed pumped storage unit pump operating condition according to claim 2, characterized in that: Select the rated lift Three-dimensional curve of pump coordinated operation under and 3D curves When the original operating point is The coordinate axis is used as the selection basis, and the three-dimensional curves of the pump cooperative operation are selected with uniform step length. and 3D curves Several reference powers The corresponding speed and opening, the point obtained ( , , )and( , , ) is the original operating point, where m≧1 is the count of the modified operating point; the reference power The uniform step size range is 1MW-10MW.

4. The method for correcting the optimal generator of the variable speed pumped storage unit pump operating condition according to claim 1, characterized in that: When correcting the original operating point, keep the unit reference power corresponding to the original operating point Constant, adjust the speed and opening of the real machine until the actual input P reaches the reference power when the real machine is in steady state , and the flow Q The maximum value is obtained, and the corrected optimal speed and the corrected optimal opening of the operating point are obtained, thereby obtaining the corrected operating point. After correcting each original operating point in the original operating point set in turn, a corrected operating point set is obtained.

5. The method for correcting the optimal generator of the variable speed pumped storage unit pump operating condition according to claim 1, characterized in that: According to the modified operating point set, the rated head is obtained by Lagrange interpolation method. The analytical formula of the corrected Pn curve and the rated head The analytical formula of the modified P-α curve is obtained; the rated head is then plotted according to the analytical formula The corrected Pn curve and corrected P-α curve under.

6. The method for correcting the optimal generator of the variable speed pumped storage unit pump operating condition according to claim 5, characterized in that: The similarity law of water pump is: ； in, is the rated head; It refers to the other lifts except the rated lift within the normal operating range of the pump; is the speed at rated head; It is the speed at other heads except the rated head within the normal operating range of the pump.

7. The method for correcting the optimal generator of the variable speed pumped storage unit pump operating condition according to claim 6, characterized in that: According to the water pump similarity law, the pump working condition of the unit is The corresponding speed Speed ​​at rated head The conversion relationship is: ； Substitute this conversion relationship into the rated head The analytical expression of the modified Pn curve under the condition of The modified Pn curve is obtained The three-dimensional surface is the modified optimal speed generator; Based on the rule that the opening of similar working conditions is the same, the rated head Based on the modified P-α curve under The three-dimensional surface is the modified optimal opening generator.

8. A variable speed pumped storage unit pump condition optimal generator correction device, characterized in that: It includes a storage device and one or more processors, the storage device is used to store one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the variable speed pumped storage unit pump operating condition optimal generator correction method as described in any one of claims 1-7.

9. A medium storing a computer program, characterized in that: When the computer program is executed by the processor, the variable speed pumped storage unit pump operating condition optimal generator correction method is implemented as described in any one of claims 1-7.

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