Method and system for determining unit load regulation performance index based on graph analysis

Abstract

The application discloses a kind of based on graphics analysis's unit load regulation performance index determination method and system, the present application includes using slope search method to determine unit response time performance index, using area ratio method to determine unit regulation speed performance index and unit regulation accuracy performance index, determine unit response time performance index includes sampling load instruction and actual load generation unit actual load curve, fitting unit actual load function f (t) And calculate slope to determine the time t'0 of starting response, t'0 is subtracted from initial time t0 to obtain load response time τ And divided by parameter τ0 to obtain unit response time performance index k1.The application can make that unit load regulation performance index calculation result is not influenced by certain single load point, truly reflect the overall regulation ability of unit in load regulation interval, the performance index obtained has the characteristics of "dimensionless", it is convenient to carry out comprehensive evaluation to unit regulation performance.

Description

Technical Field

[0001] This invention pertains to generator set performance testing technology, specifically relating to a method and system for determining generator load regulation performance indicators based on graphical analysis. Background Technology

[0002] With the rapid development of new energy installed capacity and the gradual deepening of power market reform, the quality requirements for ancillary services provided by generating units are becoming increasingly stringent. In recent years, more and more provinces (regions) have gradually launched (simulated or formal) operations of the ancillary service market. How to correctly and reasonably evaluate the quality of ancillary services provided by market participants and guide the healthy development of the ancillary service market is an important research direction. Among them, frequency regulation ancillary services refer to the process by which generating units, through automatic generation control systems, adjust the load of generating units in real time at a certain rate according to the load adjustment amount required by the power dispatching department until the target value is reached. Currently, the quality of frequency regulation ancillary services for generating units is usually evaluated using three performance indicators: unit load response time, regulation rate, and regulation accuracy, but a unified calculation standard has not yet been formed. For example, in calculating the regulation rate, some methods use the slope of the load change to 10% and 90% of the target value, while others use the moments when the load command and the actual load first cross over and then cross over again as the start and end times of the regulation process. The calculation is then based on the ratio of the actual load change to the time difference within that time period. The results of these methods are significantly affected by the selected load points (10%, 90% load points, and the points where the load command and the actual load cross over). When the selected load points cannot accurately reflect the overall trend of the unit's load change, the calculation results cannot truly reflect the unit's regulation performance. Summary of the Invention

[0003] The technical problem to be solved by this invention is to provide a method and system for determining the load regulation performance index of a generator set based on graphical analysis, which addresses the above-mentioned problems in the prior art. This invention determines the load regulation performance index of the generator set by analyzing the load command curve and the actual load curve of the generator set and the graph they form. This makes the calculation results unaffected by a single load point, and can truly reflect the overall regulation capability of the generator set in the load regulation range. The obtained performance index has a dimensionless characteristic, which facilitates the comprehensive evaluation of the generator set's regulation performance.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows:

[0005] A method for determining unit load regulation performance indicators based on graph analysis, comprising:

[0006] S101 samples the load command and the actual load of the unit during unit load regulation to generate the actual load curve of the unit.

[0007] S102, curve fitting is performed on the actual load curve of the unit to obtain the actual load function f(t);

[0008] S103, the slope of the actual load function f(t) of the computer group and the time t at which the unit load begins to respond. ′ 0, the time t when the unit load begins to respond. ′ Subtracting the moment t0 when the load command begins to change from 0 yields the load response time τ for this load adjustment.

[0009] S104, divide the load response time τ by the maximum allowable response time τ0 to obtain the unit response time performance index k1.

[0010] Optionally, the function expression of the fitting polynomial used in step S102 when performing curve fitting on the actual load curve of the unit is:

[0011] f(t) = a0t n +a1t n-1 +...+a n

[0012] In the above formula, f(t) is the actual load function of the unit at time t, and a0~a n Here, t is a polynomial parameter, n ≤ N, and N is the number of sampling points for the actual load curve of the unit.

[0013] Optionally, after step S102 and before step S103, the process further includes optimizing the polynomial parameters in the actual load function f(t) of the unit using a preset optimization algorithm, with the objective function being:

[0014]

[0015] In the above formula, min(J) represents the objective function, y(t) is the actual load of the unit at time t, f(t) is the value of the actual load function of the unit at time t, and N is the number of sampling points for the actual load of the unit.

[0016] Optionally, step S103, which involves determining the slope of the actual load function f(t) of the computer unit and identifying the moment t′0 when the unit load begins to respond, includes:

[0017] S201, the derivative f′(t) used to represent the slope is obtained by differentiating the actual load function f(t) of the unit;

[0018] S202. Determine the constraint condition of the derivative f′(t) according to the type of unit load regulation: if the type of unit load regulation is load increase regulation, then the constraint condition of the derivative f′(t) is f′(t)>0; if the type of unit load regulation is load decrease regulation, then the constraint condition of the derivative f′(t) is f′(t)<0.

[0019] S203, based on the constraint of derivative f′(t), the time t′0 when the unit load begins to respond is determined based on the following formula:

[0020] t′0=min(t),

[0021] In the above formula, min(t) represents the minimum time that satisfies the constraint condition of derivative f′(t) in the interval t0<t<t0+τ0, t0 is the moment when the load command begins to change, and τ0 is the maximum allowable response time of this type of unit.

[0022] Optionally, step S104 may be followed by:

[0023] S301, determine the time t1 when the load command first arrives at point B corresponding to the target load command P2. Draw a line segment parallel to the time axis through point O corresponding to the moment when the overload command begins to change in the actual load curve of the unit. The line segment intersects the line segment at time t1 corresponding to point B at point C. Calculate the area S of triangle OBC. OBC ;

[0024] S302, add the load response time τ of this load adjustment to the time t1 corresponding to the first arrival of the load command at the target load command P2, and obtain the time t′1. Determine the point B′ corresponding to time t′1 in the actual load curve of the unit. Draw a straight line parallel to the time axis through the point O corresponding to the time when the overload command in the actual load curve of the unit begins to change, and the line connecting this line and the point B′ and time t′1 intersects at point C′. Calculate the area S of triangle O′B′C′. O′B′C′ ;

[0025] S303, the area S of triangle OBC OBC Divide by the area S of triangle O′B′C′ O′B′C′ The performance evaluation index k2 for the regulation rate is obtained.

[0026] Optionally, in step S301, the area S of triangle OBC is calculated. OBC The function expression is:

[0027] S OBC =(OC·BC) / 2=[(P2-P1) / V·60·(P2-P1)] / 2=30·(P2-P1) 2 / V,

[0028] In the above formula, OC is the length of the side between vertices O and C of triangle OBC, BC is the length of the side between vertices B and C of triangle OBC, P2 is the target load command, P1 is the actual load corresponding to the moment when the load command starts to change, and V is the set rate of change of unit load command.

[0029] In step S302, calculate the area S of triangle O′B′C′. O′B′C The function expression for is:

[0030]

[0031] In the above formula, t′0 is the moment when the unit load begins to respond.

[0032] Optionally, step S303 may be followed by:

[0033] S401, determine the actual load stabilization time T after the load command first arrives at the target load command based on the actual load curve of the unit; if the actual load stabilization time T exceeds the preset load stabilization time, then calculate according to the preset stabilization time T0; otherwise, assign the actual stabilization time T to the preset stabilization time T0.

[0034] S402, add the load stabilization time T0 to time t′1 to obtain time t2, determine the point D′ corresponding to time t2 on the actual load curve of the unit, and determine the area S of the figure enclosed by the actual load curve of the unit between points B′ and D′ and the target load command P2. B′D′ ;

[0035] S403, determine the area of ​​the graph formed by the maximum allowable adjustment accuracy of the unit load between time t′1 and time t2. and area S B′D′ Divide by the area of ​​the figure The adjustment accuracy evaluation index k3 is obtained.

[0036] Optionally, in step S402, the area S B′D′ The expression for the computation function is:

[0037]

[0038] Area of ​​the graphic in step S403 The expression for the computation function is:

[0039]

[0040] In the above formula, δ is the maximum allowable adjustment accuracy of the unit, and T0 is the load stabilization time.

[0041] Furthermore, the present invention also provides a system for determining unit load regulation performance indicators based on graph analysis, comprising a microprocessor and a memory interconnected thereto, wherein the microprocessor is programmed or configured to execute the method for determining unit load regulation performance indicators based on graph analysis.

[0042] Furthermore, the present invention also provides a computer-readable storage medium storing a computer program, the computer program being programmed or configured by a microprocessor to execute the method for determining unit load regulation performance indicators based on graph analysis.

[0043] Compared with the prior art, the present invention has the following main advantages:

[0044] 1. This invention determines the load regulation performance index of the generator set by analyzing the load command curve and the actual load curve of the generator set and the graph formed by them. The calculation results of the load regulation performance index of the generator set by this invention are not affected by a single load point, and can reflect the overall regulation performance of the generator set during the regulation period. The calculation results are relatively objective and accurate, and can truly reflect the overall regulation capability of the generator set in the load regulation range.

[0045] 2. This invention facilitates a comprehensive evaluation of the unit's regulation performance by removing the "dimensions" from various performance indicators. Attached Figure Description

[0046] Figure 1 This is a schematic diagram of the basic process for determining the unit response time performance index in an embodiment of the present invention.

[0047] Figure 2 This is a schematic diagram illustrating the principle of determining the actual load curve of the unit, i.e., the unit's regulation performance index, in an embodiment of the present invention.

[0048] Figure 3 This is a schematic diagram of the complete process of the method in an embodiment of the present invention.

[0049] Figure 4 This is a schematic diagram illustrating the principle of determining the adjustment accuracy evaluation index in an embodiment of the present invention. Detailed Implementation

[0050] The following section will take a 600MW ultra-supercritical thermal power unit as the evaluation object and determine its performance indicators during a load increase from 400MW to 490MW adjustment process.

[0051] like Figure 1 As shown, this embodiment provides a method for determining unit load regulation performance indicators based on graph analysis, including determining unit response time performance indicators using a slope search method:

[0052] S101 samples the load command and the actual load of the unit during unit load regulation to generate the actual load curve of the unit, such as... Figure 2 The solid curve in the image is shown.

[0053] S102, curve fitting is performed on the actual load curve of the unit to obtain the actual load function f(t);

[0054] S103, the slope of the actual load function f(t) of the computer group is determined and the time t′0 when the unit load starts to respond is determined. The load response time τ of this load adjustment is obtained by subtracting the time t0 when the load command starts to change from the time t′0 when the unit load starts to respond.

[0055] S104, divide the load response time τ by the maximum allowable response time τ0 to obtain the unit response time performance index k1.

[0056] In this embodiment, the function expression of the fitting polynomial used in step S102 when performing curve fitting on the actual load curve of the unit is:

[0057] f(t) = a0t n +a1t n-1 +...+a n

[0058] In the above formula, f(t) is the actual load function of the unit at time t, and a0~a n Here, t is a polynomial parameter, n ≤ N, and N is the number of sampling points for the actual load curve of the unit.

[0059] In this embodiment, after step S102 and before step S103, the polynomial parameters in the actual load function f(t) of the unit are optimized using a preset optimization algorithm. The objective function used is:

[0060]

[0061] In the above formula, min(J) represents the objective function, y(t) is the actual load of the unit at time t, f(t) is the value of the actual load function of the unit at time t, and N is the number of sampling points for the actual load of the unit. The basic principle of optimizing the polynomial parameters in the actual load function f(t) of the unit using a preset optimization algorithm is to generate different polynomial parameters and use the objective function to obtain the polynomial parameters corresponding to the optimal objective function, thereby completing the optimization of the polynomial parameters. The optimization algorithm used can be any known optimization algorithm as needed, such as genetic algorithm or particle swarm optimization, which will not be detailed here.

[0062] In this embodiment, step S103, which involves determining the slope of the actual load function f(t) of the computer group and identifying the moment t′0 when the unit load begins to respond, includes:

[0063] S201, the derivative f′(t) used to represent the slope is obtained by differentiating the actual load function f(t) of the unit;

[0064] S202, determine the constraint condition of derivative f′(t) according to the type of unit load regulation: if the type of unit load regulation is load increase regulation, then the constraint condition of derivative f′(t) is f′(t) > 0; if the type of unit load regulation is load decrease regulation, then the constraint condition of derivative f′(t) is f′(t) < 0, which can be expressed as:

[0065]

[0066] S203, based on the constraint of derivative f′(t), the time t′0 when the unit load begins to respond is determined based on the following formula:

[0067] t′0=min(t),

[0068] In the above formula, min(t) represents the minimum time that satisfies the constraint condition of derivative f′(t) in the interval t0<t<t0+τ0, t0 is the moment when the load command begins to change, τ0 is the maximum allowable response time of this type of unit, and τ0 is a constant, specifically taken as 60s in this embodiment.

[0069] In this embodiment, in step S103, the load response time τ of this load adjustment is obtained by subtracting the time t0 when the load command begins to change from the time t′0 when the unit load begins to respond. The final time obtained is 10 seconds, which can be expressed as:

[0070] τ=t′0-t0=10.

[0071] In this embodiment, the unit response time performance index k1 obtained by dividing the load response time τ by the maximum allowable response time τ0 in step S104 can be expressed as:

[0072] k1 = τ / τ0 = 1 / 6.

[0073] See Figure 3 In this embodiment, after step S104, the method of determining the unit's regulation rate performance index is also included:

[0074] S301, determine the time t1 when the load command first arrives at point B corresponding to the target load command P2. Draw a line segment parallel to the time axis through point O corresponding to the moment when the overload command begins to change in the actual load curve of the unit. The line segment intersects the line segment at time t1 corresponding to point B at point C. Calculate the area S of triangle OBC. OBC ,like Figure 2 As shown;

[0075] S302, add the load response time τ of this load adjustment to the time t1 corresponding to the first arrival of the load command at the target load command P2, and obtain the time t′1. Determine the point B′ corresponding to time t′1 in the actual load curve of the unit. Draw a straight line parallel to the time axis through the point O corresponding to the time when the overload command in the actual load curve of the unit begins to change, and the line connecting this line and the point B′ and time t′1 intersects at point C′. Calculate the area S of triangle O′B′C′. O′B′C′ ,like Figure 2 As shown;

[0076] S303, the area S of triangle OBC OBC Divide by the area S of triangle O′B′C′ o′B′C′ The performance evaluation index k2 for the regulation rate is obtained.

[0077] In this embodiment, step S301 calculates the area S of triangle OBC. OBC The function expression is:

[0078] S OBC =(OC·BC) / 2=[(P2-P1) / V·60·(P2-P1)] / 2=30·(P2-P1) 2 / V,

[0079] In the above formula, OC is the length of the side between vertices O and C of triangle OBC, BC is the length of the side between vertices B and C of triangle OBC, P2 is the target load command, P1 is the actual load corresponding to the moment when the load command begins to change, and V is the set rate of change of the unit load command; in this embodiment, V = 9.0 MW / min, and the area S of triangle OBC is finally calculated. OBC The size is 27000;

[0080] In step S302, calculate the area S of triangle O′B′C′. O′B′C′ The function expression is:

[0081]

[0082] In the above formula, t′0 is the moment when the unit load begins to respond. In this embodiment, the area S of triangle O′B′C′ is calculated. O′B′C′ The result is 27814.5, therefore, in step S303, the area S of triangle OBC is... OBC Divide by the area S of triangle O′B′C′ O′B′C′ The performance evaluation index k2 of the regulation rate can be expressed as:

[0083]

[0084] like Figure 3As shown, this embodiment further includes determining the unit's regulation accuracy performance index using the area ratio method after step S303:

[0085] S401, determine the actual load stabilization time T after the load command first arrives at the target load command based on the actual load curve of the unit; if the actual load stabilization time T exceeds the preset load stabilization time, then calculate according to the preset stabilization time T0; otherwise, assign the actual stabilization time T to the preset stabilization time T0; the preset stabilization time T0 can be specified according to actual needs, for example, in this embodiment, the value is 10min.

[0086] S402, add the load stabilization time T0 to time t′1 to obtain time t2, determine the point D′ corresponding to time t2 on the actual load curve of the unit, and determine the graph enclosed by the actual load curve of the unit between points B′ and D′ and the target load command P2 (e.g., ...). Figure 4 The area S of the shaded region (shown in the image) B′D′ ;

[0087] S403, determine the area of ​​the graph formed by the maximum allowable adjustment accuracy of the unit load between time t′1 and time t2. and area S B′D′ Divide by the area of ​​the figure The adjustment accuracy evaluation index k3 is obtained.

[0088] In this embodiment, the area S in step S402 B′D′ The expression for the computation function is:

[0089]

[0090] In this embodiment, the area S in step S402 B′D′ The specific calculation is 2516.4.

[0091] Area of ​​the graphic in step S403 The expression for the computation function is:

[0092]

[0093] In the above formula, δ represents the maximum allowable adjustment accuracy of the unit, and T0 represents the load stabilization time. Typically, δ = 1.5%P E , where P E Given the rated load of the unit, PE = 600MW in this embodiment, therefore δ = 9MW is taken. Thus, the area S... B′D′ Divide by the area of ​​the figure The adjustment accuracy evaluation index k3 can be expressed as:

[0094]

[0095] The final value of the regulation accuracy evaluation index k3 is 0.233.

[0096] In summary, the method for determining generator load regulation performance indicators based on graphical analysis in this embodiment includes: determining the unit response time performance indicator using the slope search method; determining the unit regulation rate performance indicator using the area ratio method; and determining the unit regulation accuracy performance indicator using the area ratio method. This method for determining generator load regulation performance indicators based on graphical analysis is not affected by a single load point, and can reflect the overall regulation performance of the unit during the regulation period. The calculation results are relatively objective and accurate; the obtained performance indicators have undergone dimensionless processing, facilitating a comprehensive evaluation of the unit's regulation performance.

[0097] Furthermore, this embodiment also provides a system for determining unit load regulation performance indicators based on graph analysis, including a microprocessor and a memory interconnected thereon. The microprocessor is programmed or configured to execute the method for determining unit load regulation performance indicators based on graph analysis. Additionally, this embodiment also provides a computer-readable storage medium storing a computer program for being programmed or configured by the microprocessor to execute the method for determining unit load regulation performance indicators based on graph analysis.

[0098] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-readable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create a machine for implementing the process. Figure 1 One or more processes and / or boxes Figure 1The computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to operate in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The functions specified in one or more boxes. These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable apparatus for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0099] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A method for determining unit load regulation performance indicators based on graphical analysis, characterized in that, include: S101 samples the load command and the actual load of the unit during unit load regulation to generate the actual load curve of the unit. S102, Perform curve fitting on the actual load curve of the unit to obtain the actual load function of the unit. f ( t ); S103, Actual Load Function of Computer Group f ( t The slope of the slope and the moment when the unit load begins to respond are determined. The moment when the unit load begins to respond. Subtract the time when the load command begins to change The load response time for this load adjustment is obtained. τ ; S104, load response time τ Divide by the maximum allowable response time τ 0 yields the unit response time performance index k 1; The actual load function of the computer group in step S103 f ( t The slope of the slope and the moment when the unit load begins to respond are determined. include: S201, through the actual load function of the unit f ( t Taking the derivative yields the derivative used to represent the slope. ; S202, Determine the derivative based on the type of unit load regulation. Constraints: If the unit load regulation type is load increase regulation, then the derivative... The constraints are If the unit load regulation type is load reduction regulation, then the derivative... The constraints are ; S203, based on derivative The constraints are used to determine the moment when the unit load begins to respond, based on the following formula. : ， In the above formula, Indicates in Satisfies the derivative in the interval The minimum time under the constraints. The moment when the load command begins to change. τ 0 represents the maximum permissible response time for this type of unit; step S104 is followed by: S301, confirm the first arrival of the load command at the target load command. P Point corresponding to 2 B The moment t 1. Draw a line segment parallel to the time axis from point O, corresponding to the moment when the overload command begins to change in the actual load curve of the unit. B Corresponding time t The line segment 1 intersects at point 1. C Calculate triangles OBC area S OBC ; S302, the load command arrives at the target load command for the first time. P 2 corresponds to the time t 1. Add the load response time τ of this load adjustment to obtain the time. Determine the time The point corresponding to the actual load curve of the unit Draw a straight line parallel to the time axis from point O, corresponding to the moment when the overload command begins to change in the actual load curve of the generator unit, and make this straight line intersect with point O. and its time The lines connecting them intersect at point . Calculate triangles area ; S303, the triangle OBC area S OBC Divide by triangle area Obtain the performance evaluation index of the regulation rate k 2.

2. The method for determining unit load regulation performance indicators based on graph analysis according to claim 1, characterized in that, The function expression of the fitting polynomial used in step S102 when performing curve fitting on the actual load curve of the unit is: f ( t ) =a 0 t n + a 1 t n-1 +…+ a n In the above formula, f ( t )for t The actual load function of the unit at time t. a 0~ a n For polynomial parameters, t For time, n ≤ N , N This represents the number of sampling points for the actual load curve of the unit.

3. The method for determining unit load regulation performance indicators based on graph analysis according to claim 1, characterized in that, After step S102 and before step S103, the method also includes using a preset optimization algorithm to optimize the actual load function of the unit. f ( t The polynomial parameters in the function are optimized, and the objective function used is: ， In the above formula, min( J ) represents the objective function. y ( t ) is the collected t The actual load of the unit at any given time. f ( t )for t The value of the unit's actual load function at time t. N This represents the number of sampling points for the actual load of the unit.

4. The method for determining unit load regulation performance indicators based on graph analysis according to claim 1, characterized in that, In step S301, the triangle is calculated. OBC area S OBC The function expression is: S OBC =( OC · BC ) / 2=[( P 2- P 1) / V ·60·( P 2- P 1)] / 2=30·( P 2- P 1) 2 / V ， In the above formula, OC It is a triangle OBC vertex O, C The length of the side between them BC It is a triangle OBC vertex B , C The length of the side between them P 2 represents the target load command. P 1 represents the actual load corresponding to the moment when the load command begins to change. V The set rate of change of unit load command; In step S302, the triangle is calculated. area The function expression is: ， In the above formula, This is the moment when the unit load begins to respond.

5. The method for determining unit load regulation performance indicators based on graph analysis according to claim 1, characterized in that, Step S303 is followed by: S401, determine the actual load stabilization time after the load command first arrives at the target load command based on the unit's actual load curve. T If the actual load stabilization time T If the preset load stabilization time is exceeded, the preset stabilization time will apply. T Calculate using 0; otherwise, use the actual settling time. T Assign a value to the preset settling time T 0; S402, time Add afterload stabilization time T 0 Get the time t 2. Determine the time point on the actual load curve of the unit. t Point corresponding to 2 Determine the point ,point The actual load curve of the unit and the target load command P Area of ​​the figure enclosed by 2 ; S403, Determine the time At the time t The area of ​​the graph formed by the maximum allowable adjustment accuracy of the unit load between 2 ; and the area Divide by the area of ​​the figure Obtain the adjustment accuracy evaluation index k 3.

6. The method for determining unit load regulation performance indicators based on graph analysis according to claim 5, characterized in that, Area in step S402 The expression for the computation function is: ， Area of ​​the graphic in step S403 The expression for the computation function is: ， In the above formula, This represents the maximum allowable adjustment accuracy of the unit. T 0 represents the load stabilization time.

7. A system for determining unit load regulation performance indicators based on graph analysis, comprising a microprocessor and a memory interconnected, characterized in that, The microprocessor is programmed or configured to execute the method for determining unit load regulation performance indicators based on graph analysis as described in any one of claims 1 to 6.

8. A computer-readable storage medium storing a computer program, characterized in that, The computer program is used to be programmed or configured by a microprocessor to execute the method for determining unit load regulation performance indicators based on graph analysis as described in any one of claims 1 to 6.

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