Small hydropower station power generation capacity generalization evaluation method based on reservoir engineering characteristic parameters

Abstract

The invention provides a small hydropower station power generation capacity generalization evaluation method based on reservoir engineering characteristic parameters, and discloses a small hydropower station power generation capacity generalization calculation method based on the reservoir engineering characteristic parameters, which comprises the following steps of: calculating a water purification head and reservoir capacity corresponding to a current water level by collecting the reservoir engineering characteristic parameters of a power station; and selecting an empirical value of a similar generator set as a comprehensive output coefficient K of the generator set, calculating an adjustable water volume, a full generation flow and a storage flow, and finally obtaining a peak full generation hour value of the small hydropower station. According to the method, the defects that a large number of early-stage construction small hydropower reservoirs and unit characteristic data are not complete, and particularly, NHQ curve and water level storage capacity curve data are lost are overcome, the power generation capacity of the small hydropower stations is quantified with the full generation hours as indications, and a scientific basis is provided for dispatching and management of the small hydropower stations.

Description

Technical Field

[0001] The invention relates to the technical field of small hydropower optimization dispatching in power system operation analysis, in particular to a generalized evaluation method of small hydropower generation capacity based on reservoir engineering characteristic parameters. Background Art

[0002] As an important part of renewable energy, small hydropower has been studied. The quantitative analysis method of small hydropower peak power generation capacity can improve the overall flexibility of small hydropower, promote the efficient consumption of renewable energy and alleviate the shortage of electricity supply. Traditional methods require hydropower stations to have relatively accurate data on water level and storage capacity relationship, flow channel head loss characteristics, generator efficiency, tailwater level change characteristics, and water condition monitoring data, which are not suitable for the calculation of small hydropower. This method is based on the characteristic parameters of reservoir engineering, and quantitatively calculates the power generation capacity of small hydropower through real-time monitoring data of water level and output. It overcomes the shortcomings of incomplete characteristic data of a large number of small hydropower reservoirs and units in the early construction, especially the lack of NHQ curves and water level storage capacity curves. It also quantifies the power generation capacity of small hydropower based on the number of full-time hours, taking into account both operability and production accuracy requirements. Summary of the invention

[0003] The present invention proposes a generalized evaluation method for small hydropower generation capacity based on reservoir engineering characteristic parameters, which belongs to a generalized calculation method for small hydropower generation capacity based on reservoir engineering characteristic parameters. The method calculates the full generation hours of small hydropower according to the real-time monitoring data of the power station and the reservoir engineering characteristic parameters, and is used to evaluate the peak generation capacity of small hydropower, so as to provide a basis for flexible resource optimization configuration for scheduling; the method can be applicable to adjustable small hydropower with real-time monitoring data of water level and output, but missing NHQ curve and water level storage capacity curve data, and is used for fine analysis of the peak capacity of small hydropower.

[0004] The present invention adopts the following technical solutions.

[0005] The generalized evaluation method of small hydropower generation capacity based on reservoir engineering characteristic parameters can be used to calculate the small hydropower generation capacity of small hydropower stations, including the following steps:

[0006] Step S1, collecting the characteristic parameters of the reservoir engineering and the installed capacity of the power station to be evaluated;

[0007] Step S2: Obtain the real-time monitoring upstream and downstream water levels Z of the power station to be evaluated at the current time t t上 , Z t下 And the active output of the generator set P t , calculate the net water head H at the current moment t ;

[0008] Step S3: Select the empirical value K of the comprehensive output coefficient of similar generator sets t, according to the recorded reservoir engineering characteristic parameters, the current storage capacity C is calculated t ;

[0009] Step S4: According to the current storage capacity C t And dead water level corresponding to the storage capacity C l , calculate the adjustable water volume C s , and based on the storage capacity C at the current time t t The storage capacity C at the previous moment t-1 t-1 , calculate the reservoir tolerance flow Q C ;

[0010] Step S5: According to the comprehensive output coefficient K of the unit t And the net water head H at the current moment t , Unit active output P t Calculate the full power flow Q of the power station n , power generation flow Q t , combined with the reservoir tolerance flow Q C Calculate the inflow flow Q r ;

[0011] Step S6: According to the current adjustable water volume C s , Full power flow of power station Q n , Inbound flow Q r , get the full power hours T of the power station to be evaluated t .

[0012] In step S1, the reservoir engineering characteristic parameters include: normal high water level of the reservoir and the corresponding storage capacity, dead water level and the corresponding storage capacity, and tail water level.

[0013] In step S2, the net water head H t Real-time monitoring of upstream water level Z through the power station t上 and downstream water level Z t下 The calculation formula is H t =Z t上 -Z t下 ;

[0014] In the formula, the unit of each water level is m.

[0015] In step S3, the current storage capacity C is calculated t The specific calculation steps are:

[0016] Step S31, assuming that with the increase of water head, the flow rate of the same unit output of the same power station decreases, the water consumption rate of the unit decreases, but the comprehensive output coefficient does not change much; with the increase of unit output, the flow rate of the same unit under the same water head increases, the water consumption rate of the unit remains unchanged, and the comprehensive output coefficient remains unchanged, then in the generalized calculation of this step, a constant value is taken as the comprehensive output coefficient of the power station;

[0017] Select the experience value of the power station with the same installed capacity as the comprehensive output coefficient K of the power station unit to be evaluated t ,At this time, the power station to be evaluated takes the same typical value under each output scenario and water level;

[0018] If the power station to be evaluated has the NHQ curve data of the unit, the following formula is used to calculate the power station at the current water level Z t And active output P t The comprehensive output coefficient K t ;

[0019]

[0020] In the formula, H t is the net water head obtained in step 2, in m; N t The current active output P is obtained from the curve data. t The corresponding unit output value, the unit is kW; Q is the corresponding flow rate through the machine in the curve data, the unit is m 3 / s;

[0021] Similarly, the power station at the current water level Z t Comprehensive output coefficient K at full power n for

[0022]

[0023] At this time, N n is the rated active output value of the unit, in kW;

[0024] Step S32: According to the upstream water level Z at time t t上 , calculate the corresponding storage capacity C t ;

[0025] According to the dead water level Z in the reservoir engineering characteristic parameters l and the corresponding storage capacity C l , Normal high water level Z h and the corresponding storage capacity C h The water level Z is calculated based on the linear slope method. t上 Corresponding storage capacity C t :

[0026]

[0027] In the formula, the unit of water level is m, and the unit of reservoir capacity is 10,000 m 3 .

[0028] If the comprehensive output coefficients of power stations with the same installed capacity in the years adjacent to the completion time of the small hydropower station are similar and range from 7 to 9, then when the power station to be evaluated lacks the NHQ curve data of the unit, in step S3, the empirical data of the power station with the same installed capacity is directly applied to obtain the comprehensive output coefficient; specifically: the comprehensive output system K is taken as follows: for installed capacity within 30MW, the K value is approximately 8.4; for installed capacity between 30 and 40MW, the K value is approximately 8.5; for installed capacity between 40 and 50MW, the K value is approximately 8.6; for installed capacity above 50MW, the K value is approximately 8.7.

[0029] Step S4 comprises the following steps:

[0030] Step S41: According to the current water level storage capacity C t , calculate the adjustable water volume C s for:

[0031] C s =C t -C l ;

[0032] Step S42: Based on the storage capacity C at adjacent times t and C t-1 , calculate the reservoir tolerance flow Q C for:

[0033]

[0034] In the formula, the unit of storage capacity is 10,000 m 3 The time interval between adjacent moments is one hour, and the unit of reservoir tolerance flow is m 3 / s.

[0035] Step S5 comprises the following steps:

[0036] Step S51: According to the comprehensive output coefficient K of the unit t And the net water head H at the current moment t , calculate the full power flow Q of the power station n for:

[0037]

[0038] Where P n is the installed capacity of the power station, in MW; H t is the net water head, in m; Q n The current maximum traffic volume, in m 3 / s;

[0039] Step S52: According to the comprehensive output coefficient K of the unit t And the active output of the power station P t , calculate the power generation flow Q of the power station t for:

[0040]

[0041] Where P t is the active power output of the unit, in MW; H t is the net water head obtained in step 2, in m; Q t is the power generation flow of the power station at the current moment, in m 3 / s;

[0042] Step S53: according to the storage tolerance flow Q C , calculate the inflow flow Q r for:

[0043] Q r =Q c +Q t ;

[0044] In the formula, the unit of flow rate is m 3 / s.

[0045] In step S6, according to the adjustable water volume C s And the full power flow Q of the power station obtained in step 5 n and the inflow flow Q r , calculate the number of full-load hours T t The formula is:

[0046]

[0047] In the formula, the adjustable water volume C s The unit is ten thousand m 3 ; Full traffic Q n and the inflow flow Q r Unit: m 3 / s.

[0048] The present invention discloses a generalized calculation method for the generation capacity of small hydropower based on reservoir engineering characteristic parameters. The method collects the characteristic parameters of the power station reservoir engineering, calculates the net head and storage capacity corresponding to the current water level, selects the experience value of similar generator sets as the comprehensive output coefficient K of the unit, and calculates the adjustable water volume, full-fire flow, and inflow flow, and finally obtains the value of the peak full-fire hours of small hydropower. Its innovation lies in: in view of the difficulty of calculating the peak generation capacity of small hydropower due to incomplete reservoir and unit characteristic data, a generalized calculation method for the generation capacity of small hydropower based on reservoir engineering characteristic parameters is proposed. Based on the reservoir engineering characteristic parameters, the full-fire hours of small hydropower are calculated through the real-time monitoring data of water level and output, so as to characterize the peak generation capacity of small hydropower. In terms of using real-time data and dynamic response of missing data processing machine, it takes into account the operability and accuracy requirements, and provides a scientific basis for the dispatching and management of small hydropower.

[0049] Compared with the traditional method, the present invention has at least the following beneficial technical effects:

[0050] Aiming at the difficulty in calculating the peak power generation capacity of small hydropower stations with incomplete reservoir and unit characteristic data, the present invention proposes a generalized calculation method for the power generation capacity of small hydropower stations based on reservoir engineering characteristic parameters. Based on the reservoir engineering characteristic parameters, the full generation hours of small hydropower stations are calculated through real-time monitoring data of water level and output, so as to characterize the peak power generation capacity of small hydropower stations. In terms of utilizing real-time data and dynamic response of missing data processing machines, the present invention takes into account both operability and accuracy requirements, and provides a scientific basis for the dispatching and management of small hydropower stations.

[0051] The present invention calculates the full generation hours of small hydropower according to the real-time monitoring data of the power station and the characteristic parameters of the reservoir project, which can be used to evaluate the peak generation capacity of small hydropower and provide a basis for flexible resource optimization configuration for dispatching.

[0052] The present invention overcomes the shortcomings of incomplete characteristic data of a large number of small hydropower reservoirs and units constructed in the early stage, especially the lack of NHQ curve and water level storage capacity curve data. It quantifies the power generation capacity of small hydropower with full-power hours as an indicator, provides a scientific basis for the dispatch and management of small hydropower, and can be applied to adjustable small hydropower with real-time monitoring data of water level and output but missing NHQ curve and water level storage capacity curve data, and can be used for fine analysis of the peak capacity of small hydropower.

[0053] Traditional methods ignore the dispatchability of small hydropower and regard small hydropower output as an uncontrollable resource similar to new energy sources such as wind and light, which does not have peak power generation capacity. Compared with traditional methods, the method proposed in the present invention provides an adjustable small hydropower peak power generation model, which provides a basis for realizing the flexible adjustment of small hydropower as a whole and participating in optimized scheduling to alleviate power supply shortages. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0055] Attached Figure 1 It is a schematic flow chart of the generalized calculation method of small hydropower generation capacity of the present invention. DETAILED DESCRIPTION

[0056] In order to make the purpose and technical solution of the present invention clearer and easier to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. The specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0057] Aiming at the difficulty in calculating the peak power generation capacity of small hydropower stations due to the lack of NHQ curve and water level and storage capacity curve data, the present invention proposes a generalized calculation method for the power generation capacity of small hydropower stations based on the characteristic parameters of reservoir engineering. The peak power generation capacity of small hydropower stations is calculated by real-time monitoring data of engineering technical parameters, water level and output, which helps to improve the overall flexibility of small hydropower stations and take into account the efficient consumption of renewable energy and the demand for power supply.

[0058] like Figure 1 As shown, the generalized evaluation method of small hydropower generation capacity based on reservoir engineering characteristic parameters can be used to calculate the small hydropower generation capacity of a small hydropower station, including the following steps:

[0059] Step S1, collecting the characteristic parameters of the reservoir engineering and the installed capacity of the power station to be evaluated;

[0060] Step S2: Obtain the real-time monitoring upstream and downstream water levels Z of the power station to be evaluated at the current time t t上 , Z t下 And the active output of the generator set P t , calculate the net water head H at the current moment t ;

[0061] Step S3: Select the empirical value K of the comprehensive output coefficient of similar generator sets t , according to the recorded reservoir engineering characteristic parameters, the current storage capacity C is calculated t ;

[0062] Step S4: According to the current storage capacity C t And dead water level corresponding to the storage capacity C l , calculate the adjustable water volume C s , and based on the storage capacity C at the current time t t The storage capacity C at the previous moment t-1 t-1 , calculate the reservoir tolerance flow Q C ;

[0063] Step S5: According to the comprehensive output coefficient K of the unit t And the net water head H at the current moment t , Unit active output P t Calculate the full power flow Q of the power station n , power generation flow Q t , combined with the reservoir tolerance flow Q C Calculate the inflow flow Q r ;

[0064] Step S6: According to the current adjustable water volume C s , Full power flow of power station Q n , Inbound flow Q r , get the full power hours T of the power station to be evaluated t .

[0065] In step S1, the reservoir engineering characteristic parameters include: normal high water level of the reservoir and the corresponding storage capacity, dead water level and the corresponding storage capacity, and tail water level.

[0066] In step S2, the net water head H t Real-time monitoring of upstream water level Z through the power station t上 and downstream water level Z t下 The calculation formula is H t =Z t上 -Z t下 ;

[0067] In the formula, the unit of each water level is m.

[0068] In step S3, the current storage capacity C is calculated t The specific calculation steps are:

[0069] Step S31, assuming that with the increase of water head, the flow rate of the same unit output of the same power station decreases, the water consumption rate of the unit decreases, but the comprehensive output coefficient does not change much; with the increase of unit output, the flow rate of the same unit under the same water head increases, the water consumption rate of the unit remains unchanged, and the comprehensive output coefficient remains unchanged, then in the generalized calculation of this step, a constant value is taken as the comprehensive output coefficient of the power station;

[0070] Select the experience value of the power station with the same installed capacity as the comprehensive output coefficient K of the power station unit to be evaluated t ,At this time, the power station to be evaluated takes the same typical value under each output scenario and water level;

[0071] If the power station to be evaluated has the NHQ curve data of the unit, the following formula is used to calculate the power station at the current water level Z t And active output P t The comprehensive output coefficient K t ;

[0072]

[0073] In the formula, H t is the net water head obtained in step 2, in m; N t The current active output P is obtained from the curve data. t The corresponding unit output value, the unit is kW; Q is the corresponding flow rate through the machine in the curve data, the unit is m 3 / s;

[0074] Similarly, the power station at the current water level Z t Comprehensive output coefficient K at full power n for

[0075]

[0076] At this time, Nn is the rated active output value of the unit, in kW;

[0077] Step S32: According to the upstream water level Z at time t t上 , calculate the corresponding storage capacity C t ;

[0078] According to the dead water level Z in the reservoir engineering characteristic parameters l and the corresponding storage capacity C l , Normal high water level Z h and the corresponding storage capacity C h The water level Z is calculated based on the linear slope method. t上 Corresponding storage capacity C t :

[0079]

[0080] In the formula, the unit of water level is m, and the unit of reservoir capacity is 10,000 m 3 .

[0081] If the comprehensive output coefficients of power stations with the same installed capacity in the years adjacent to the completion time of the small hydropower station are similar and range from 7 to 9, then when the power station to be evaluated lacks the NHQ curve data of the unit, in step S3, the empirical data of the power station with the same installed capacity is directly applied to obtain the comprehensive output coefficient; specifically: the comprehensive output system K is taken as follows: for installed capacity within 30MW, the K value is approximately 8.4; for installed capacity between 30 and 40MW, the K value is approximately 8.5; for installed capacity between 40 and 50MW, the K value is approximately 8.6; for installed capacity above 50MW, the K value is approximately 8.7.

[0082] Step S4 comprises the following steps:

[0083] Step S41: According to the current water level storage capacity C t , calculate the adjustable water volume C s for:

[0084] C s =C t -C l ;

[0085] Step S42: Based on the storage capacity C at adjacent times t and C t-1 , calculate the reservoir tolerance flow Q C for:

[0086]

[0087] In the formula, the unit of storage capacity is 10,000 m 3 The time interval between adjacent moments is one hour, and the unit of reservoir tolerance flow is m 3 / s.

[0088] Step S5 comprises the following steps:

[0089] Step S51: According to the comprehensive output coefficient K of the unit t and the net water head H at the current moment t , calculate the full power flow Q of the power station n for:

[0090]

[0091] Where P n is the installed capacity of the power station, in MW; H t is the net water head, in m; Q n The current maximum traffic volume, in m 3 / s;

[0092] Step S52: According to the comprehensive output coefficient K of the unit t And the active output of the power station P t , calculate the power generation flow Q of the power station t for:

[0093]

[0094] Where P t is the active power output of the unit, in MW; H t is the net water head obtained in step 2, in m; Q t is the power generation flow of the power station at the current moment, in m 3 / s;

[0095] Step S53: according to the storage tolerance flow Q C , calculate the inflow flow Q r for:

[0096] Q r =Q c +Q t ;

[0097] In the formula, the unit of flow rate is m 3 / s.

[0098] In step S6, according to the adjustable water volume C s And the full power flow Q of the power station obtained in step 5 n and the inflow flow Q r , calculate the number of full-load hours T t The formula is:

[0099]

[0100] In the formula, the adjustable water volume C s The unit is ten thousand m 3 ; Full traffic Qn and inbound flow Q r Unit: m 3 / s.

[0101] Example:

[0102] In this example, an adjustable small hydropower station with real-time water level monitoring data is selected, and its engineering characteristic parameters are collected as shown in Table 1.

[0103] Traditional methods ignore the dispatchability of small hydropower and regard the output of small hydropower as an uncontrollable resource similar to new energy sources such as wind and light, which does not have peak power generation capacity. Using the method proposed in the present invention to calculate, if the upstream and downstream water levels are 610.23m and 446m respectively at the current moment, the upstream water level was 610.45m at the previous moment, and the current active output is 35MW, then the adjustable small hydropower can generate full power at least for 91 hours at the peak. Compared with traditional methods, this method provides an adjustable small hydropower peak power generation model, which provides a basis for realizing the flexible adjustment of small hydropower as a whole and participating in optimized scheduling to alleviate power supply tension.

[0104] Table 1 Characteristic parameters of small hydropower reservoir projects to be evaluated

[0105]

[0106] The above contents are only for explaining the technical idea of ​​the present invention and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the claims of the present invention.

Claims

1. A generalized evaluation method for small hydropower generation capacity based on reservoir engineering characteristic parameters can be used to calculate the small hydropower generation capacity of small hydropower stations, which is characterized by: The following steps are involved: Step S1, collecting the characteristic parameters of the reservoir engineering and the installed capacity of the power station to be evaluated; Step S2: Obtain the real-time monitoring upstream and downstream water levels Z of the power station to be evaluated at the current time t t上 , Z t下 And the active output of the generator set P t , calculate the net water head H at the current moment t ; Step S3: Select the empirical value K of the comprehensive output coefficient of similar generator sets t , according to the recorded reservoir engineering characteristic parameters, the current storage capacity C is calculated t ; Step S4: According to the current storage capacity C t And dead water level corresponding to the storage capacity C l , calculate the adjustable water volume C s , and based on the storage capacity C at the current time t t The storage capacity C at the previous moment t-1 t-1 , calculate the reservoir tolerance flow Q C ; Step S5: According to the comprehensive output coefficient K of the unit t and the net water head H at the current moment t , Unit active output P t Calculate the full power flow Q of the power station n , power generation flow Q t , combined with the reservoir tolerance flow Q C Calculate the inflow flow Q r ; Step S6: According to the current adjustable water volume C s , Full power flow of power station Q n , Inbound flow Q r , get the full power hours T of the power station to be evaluated t .

2. The generalized evaluation method for small hydropower generation capacity based on reservoir engineering characteristic parameters according to claim 1 is characterized by: In step S1, the reservoir engineering characteristic parameters include: normal high water level of the reservoir and the corresponding storage capacity, dead water level and the corresponding storage capacity, and tail water level.

3. The method for generalizing and evaluating small hydropower generation capacity based on reservoir engineering characteristic parameters according to claim 1 is characterized in that: In step S2, the net water head H t Real-time monitoring of upstream water level Z through the power station t上 and downstream water level Z t下 The calculation formula is H t =Z t上 -Z t下 ; In the formula, the unit of each water level is m.

4. The method for generalizing and evaluating small hydropower generation capacity based on reservoir engineering characteristic parameters according to claim 3 is characterized in that: In step S3, the current storage capacity C is calculated t The specific calculation steps are: Step S31, assuming that with the increase of water head, the flow rate of the same unit output of the same power station decreases, the water consumption rate of the unit decreases, but the comprehensive output coefficient does not change much; with the increase of unit output, the flow rate of the same unit under the same water head increases, the water consumption rate of the unit remains unchanged, and the comprehensive output coefficient remains unchanged, then in the generalized calculation of this step, a constant value is taken as the comprehensive output coefficient of the power station; Select the experience value of the power station with the same installed capacity as the comprehensive output coefficient K of the power station unit to be evaluated t ,At this time, the power station to be evaluated takes the same typical value under each output scenario and water level; If the power station to be evaluated has the NHQ curve data of the unit, the following formula is used to calculate the power station at the current water level Z t And active output P t The comprehensive output coefficient K t ; In the formula, H t is the net water head obtained in step 2, in m; N t The current active output P is obtained from the curve data. t The corresponding unit output value, the unit is kW; Q is the corresponding flow rate through the machine in the curve data, the unit is m 3 / s; Similarly, the power station at the current water level Z t Comprehensive output coefficient K at full power n for At this time, N n is the rated active output value of the unit, in kW; Step S32: According to the upstream water level Z at time t t上 , calculate the corresponding storage capacity C t ; According to the dead water level Z in the reservoir engineering characteristic parameters l and the corresponding storage capacity C l , Normal high water level Z h and the corresponding storage capacity C h The water level Z is calculated based on the linear slope method. t上 Corresponding storage capacity C t : In the formula, the unit of water level is m, and the unit of reservoir capacity is 10,000 m 3 .

5. The generalized evaluation method for small hydropower generation capacity based on reservoir engineering characteristic parameters according to claim 3 is characterized by: If the comprehensive output coefficients of power stations with the same installed capacity in the years adjacent to the completion time of the small hydropower station are similar and range from 7 to 9, then when the power station to be evaluated lacks the NHQ curve data of the unit, in step S3, the empirical data of the power station with the same installed capacity is directly applied to obtain the comprehensive output coefficient; specifically: the comprehensive output system K is taken as follows: for installed capacity within 30MW, the K value is approximately 8.4; for installed capacity between 30 and 40MW, the K value is approximately 8.5; for installed capacity between 40 and 50MW, the K value is approximately 8.6; for installed capacity above 50MW, the K value is approximately 8.

7.

6. The method for generalizing and evaluating small hydropower generation capacity based on reservoir engineering characteristic parameters according to claim 4 is characterized in that: Step S4 comprises the following steps: Step S41: According to the current water level storage capacity C t , calculate the adjustable water volume C s for: C s =C t -C l ; Step S42: Based on the storage capacity C at adjacent times t and C t-1 , calculate the reservoir tolerance flow Q C for: In the formula, the unit of storage capacity is 10,000 m 3 The time interval between adjacent moments is one hour, and the unit of reservoir tolerance flow is m 3 / s.

7. The method for generalizing and evaluating small hydropower generation capacity based on reservoir engineering characteristic parameters according to claim 6 is characterized in that: Step S5 comprises the following steps: Step S51: According to the comprehensive output coefficient K of the unit t and the net water head H at the current moment t , calculate the full power flow Q of the power station n for: Where P n is the installed capacity of the power station, in MW; H t is the net water head, in m; Q n The current maximum traffic flow, in m 3 / s; Step S52: According to the comprehensive output coefficient K of the unit t And the active output of the power station P t , calculate the power generation flow Q of the power station t for: Where P t is the active power output of the unit, in MW; H t is the net water head obtained in step 2, in m; Q t is the power generation flow of the power station at the current moment, in m 3 / s; Step S53: according to the storage tolerance flow Q C , calculate the inflow flow Q r for: Q r =Q c +Q t ; In the formula, the unit of flow rate is m 3 / s.

8. The method for generalizing and evaluating small hydropower generation capacity based on reservoir engineering characteristic parameters according to claim 7 is characterized in that: In step S6, according to the adjustable water volume C s And the full power flow Q of the power station obtained in step 5 n and inbound flow Q r , calculate the number of full-load hours T t The formula is: In the formula, the adjustable water volume C s The unit is ten thousand m 3 ; Full traffic Q n and inbound flow Q r Unit: m 3 / s.

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