A method, device, equipment and medium for monitoring reservoir leakage level

Abstract

The present application provides a method, device and equipment for monitoring the leakage level of a reservoir. The method includes: obtaining the first reservoir basin terrain characteristic parameters of the upper reservoir and the second reservoir basin terrain characteristic parameters of the lower reservoir of a pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir at each moment during the monitoring period; based on the first reservoir basin terrain characteristic parameters, the second reservoir basin terrain characteristic parameters and the water volume change parameters, calculating the reservoir capacity of the upper reservoir, the lower reservoir and the power station system at each moment during the monitoring period, respectively, the power station system is a combined system of the upper reservoir, the lower reservoir and the unit connecting the upper reservoir and the lower reservoir; based on the reservoir capacity, determining the leakage level information of the pumped storage power station reservoir. The present application can realize real-time monitoring of whether the reservoir has abnormal leakage during the daily operation of the reservoir, as well as monitoring of different leakage levels, thereby improving the accuracy of reservoir leakage monitoring.

Description

Technical Field

[0001] The present application relates to the technical field of leakage monitoring, and in particular to a method, device, equipment and medium for monitoring the leakage level of a reservoir. Background Art

[0002] With the continuous development of science and technology, the application of pumped-storage power stations is becoming more and more extensive. The upper reservoirs of pumped-storage power stations are mostly formed by excavation. The groundwater level around the reservoir is generally lower than the normal water storage level of the reservoir. There is not much water supply nearby. After water storage, a huge head difference is formed inside and outside the reservoir. The reservoir water can seep downward through the rock layer at the bottom of the reservoir, combined cracks, steep-angle cracks, etc., and the thin ridges at the underground watershed may also cause them to seep into the adjacent valley after being submerged.

[0003] On the one hand, reservoir leakage means lost electricity, which restricts the economic benefits of pumped-storage power plants. On the other hand, leaking water can also endanger the foundation safety of surrounding buildings and slopes. Once a leakage channel is formed, it will generally expand due to long-term water erosion and scouring, potentially causing larger concentrated leakage and scouring damage, endangering the stability of the reservoir slopes, the mountains on both sides, and existing buildings. Therefore, real-time, rapid, and regular monitoring, identification, and early warning of abnormal leakage during normal reservoir operation are extremely important to ensure the economic and stable operation of power plants.

[0004] Existing reservoir leakage monitoring typically involves deploying piezometers and other equipment within the reservoir basin during construction. However, this monitoring approach is point-based, with equipment typically installed 50-100 meters apart. This sparse density makes comprehensive monitoring of reservoir leakage difficult. Newer detection technologies, such as high-density electrical detection, ground-penetrating radar, and electromagnetic wave detection, are generally used for initial detection of leaking areas after significant leakage has occurred. These technologies are unable to provide real-time monitoring during daily reservoir operations to determine if leakage is occurring. Furthermore, detection signal attenuation is significantly affected by water depth, and conducting a full reservoir survey is both time-consuming and costly. Summary of the Invention

[0005] The embodiments of the present application provide a method, device, equipment and medium for monitoring the leakage level of a reservoir to solve the problem in the related art that the reservoir performs initial detection of the leakage area after a relatively obvious leakage anomaly has occurred, and cannot perform real-time monitoring during the daily operation of the reservoir to determine whether the reservoir has leakage anomalies.

[0006] In order to solve the above technical problems, the embodiments of the present application are implemented as follows:

[0007] In a first aspect, an embodiment of the present application provides a method for monitoring the leakage level of a reservoir, the method comprising:

[0008] Obtaining topographic characteristic parameters of a first reservoir basin of an upper reservoir and a second reservoir basin of a lower reservoir of a pumped storage power station, as well as water volume change parameters of the upper reservoir and the lower reservoir at each moment during a monitoring period;

[0009] Based on the first reservoir basin topographic characteristic parameter, the second reservoir basin topographic characteristic parameter, and the water volume change parameter, the reservoir capacity of the upper reservoir, the lower reservoir, and the power station system at each moment in the monitoring period is calculated, where the power station system is a combined system of the upper reservoir, the lower reservoir, and the units connecting the upper reservoir and the lower reservoir;

[0010] Based on the reservoir capacity, leakage level information of the pumped storage power station reservoir is determined.

[0011] Optionally, the calculating of the reservoir capacities of the upper reservoir, the lower reservoir, and the power station system at each moment in the monitoring period based on the first reservoir basin topographic characteristic parameter, the second reservoir basin topographic characteristic parameter, and the water volume change parameter includes:

[0012] Determine a first total water volume parameter of the upper reservoir at each moment and a second total water volume parameter of the lower reservoir at each moment based on the first reservoir basin topographic characteristic parameter and the second reservoir basin topographic characteristic parameter, and the water level parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period in the water volume change parameter;

[0013] Calculate the storage capacity of the first reservoir of the power station system at each moment in the monitoring period based on the first total water volume parameter, the second total water volume parameter, and the water volume change parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period;

[0014] Based on the first total water volume parameter and the water volume change parameter of the upper reservoir at each moment during the monitoring period, the second reservoir storage capacity of the upper reservoir at each moment during the monitoring period is calculated;

[0015] Based on the second total water volume parameter and the water volume change parameter of the lower reservoir at each moment in the monitoring period, the third reservoir capacity of the lower reservoir at each moment in the monitoring period is calculated.

[0016] Optionally, the water volume change parameters include: water level parameters, precipitation parameters, evaporation parameters, water demand parameters, water replenishment parameters and additional water consumption parameters. The water demand parameters are used to indicate the amount of water transferred between the upper reservoir and the lower reservoir for power generation, and the additional water consumption parameters are parameters of non-power generation water consumption of the upper reservoir and the lower reservoir.

[0017] Optionally, the calculating of the first reservoir capacity of the power station system at each moment in the monitoring period based on the first total water volume parameter, the second total water volume parameter, and the water volume change parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period includes:

[0018] The storage capacity of the first reservoir is calculated based on the following formula (1):

[0019] V 库容-整 =V 整 +V 蒸 +V 用 -V 降 (1)

[0020] In the above formula (1), V 库容-整 is the storage capacity of the first reservoir of the power station system at each moment during the monitoring period, V 整 is the total water volume parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 蒸 is the total evaporation parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 用 is the total additional water consumption parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 降 It is the total precipitation parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period.

[0021] Optionally, the calculating of the second reservoir capacity of the upper reservoir at each moment in the monitoring period based on the first total water volume parameter and the water volume change parameter of the upper reservoir at each moment in the monitoring period includes:

[0022] The storage capacity of the second reservoir is calculated based on the following formula (2):

[0023] V 库容-上 =V 上 +V 上-蒸 +V 上-用 -V 上-降 -V 电 (2)

[0024] In the above formula (2), V 库容-上 is the storage capacity of the second reservoir at each moment during the monitoring period, V 上 is the water volume parameter of the upper reservoir at each moment during the monitoring period, V 上-蒸 is the evaporation parameter of the upper reservoir at each moment during the monitoring period, V 上-用 is the additional water consumption parameter of the upper reservoir at each moment during the monitoring period, V 上-降 is the precipitation parameter of the upper reservoir at each moment during the monitoring period, V 电is the water demand parameter of the upper reservoir at each moment during the monitoring period. The water demand parameter during discharge power generation is a negative value, and the water demand parameter during pumped storage power generation is a positive value.

[0025] Optionally, the calculating of the third reservoir capacity of the lower reservoir at each moment in the monitoring period based on the second total water volume parameter and the water volume change parameter of the lower reservoir at each moment in the monitoring period includes:

[0026] The storage capacity of the third reservoir is calculated based on the following formula (3):

[0027] V 库容-下 =V 下 +V 下-蒸 +V 下-用 -V 下-降 -V 电 (3)

[0028] In the above formula (3), V 库容-下 is the storage capacity of the third reservoir at each moment during the monitoring period, V 下 is the water volume parameter of the lower reservoir at each moment during the monitoring period, V 下-蒸 is the evaporation parameter of the lower reservoir at each moment during the monitoring period, V 下-用 is the additional water consumption parameter of the lower reservoir at each moment during the monitoring period, V 下-降 is the precipitation parameter of the lower reservoir at each moment during the monitoring period, V 电 is the water demand parameter of the lower reservoir at each moment during the monitoring period. The water demand parameter during discharge power generation is positive, and the water demand parameter during pumped storage power generation is negative.

[0029] Optionally, determining leakage level information of the pumped storage power station reservoir based on the reservoir capacity includes:

[0030] Determine storage capacity change curves of the upper reservoir, the lower reservoir, and the power station system during the monitoring period based on the storage capacities of the upper reservoir, the lower reservoir, and the power station system at each moment during the monitoring period;

[0031] Based on the storage capacity change curve, leakage level information of the pumped storage power station reservoir is analyzed and obtained.

[0032] Optionally, determining leakage level information of the pumped storage power station reservoir based on the reservoir capacity includes:

[0033] Determine storage capacity change curves of the upper reservoir, the lower reservoir, and the power station system during the monitoring period based on the storage capacities of the upper reservoir, the lower reservoir, and the power station system at each moment during the monitoring period;

[0034] Derivative the storage capacity change curve based on the time parameter within the monitoring period to obtain a storage capacity change rate;

[0035] Based on the change rate curve corresponding to the storage capacity change rate, leakage level information of the pumped storage power station reservoir is analyzed and obtained.

[0036] Optionally, it is characterized in that the leakage level information includes at least one of: a non-abnormal leakage level, an abnormally stable leakage level and an abnormally unstable leakage level.

[0037] Optionally, after obtaining the first reservoir basin topographic characteristic parameters of the upper reservoir and the second reservoir basin topographic characteristic parameters of the lower reservoir of the pumped storage power station, and the water volume change parameters of the upper reservoir and the lower reservoir at each moment during the monitoring period, the method further includes:

[0038] Obtaining a water replenishment parameter from the water volume change parameter;

[0039] When the water replenishment parameter indicates that the water replenishment amount of the upper reservoir and / or the lower reservoir to the normal water level is greater than the reference water replenishment amount, determining that abnormal leakage exists in the upper reservoir and / or the lower reservoir; or

[0040] When the water replenishment parameter indicates that the time taken for the upper reservoir and / or the lower reservoir to replenish water to a normal water level is longer than the benchmark water replenishment time, it is determined that abnormal leakage exists in the upper reservoir and / or the lower reservoir.

[0041] Optionally, when the water volume change parameter is a precipitation parameter, an evaporation parameter, a water demand parameter, and an additional water consumption parameter, obtaining the water volume change parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period includes:

[0042] Obtaining total water volume change parameters of the upper reservoir and the lower reservoir respectively during the monitoring period;

[0043] The total water volume change parameter is averaged based on the number of moments in the monitoring period to obtain the water volume change parameter of the upper reservoir and the lower reservoir at each moment in the monitoring period.

[0044] Optionally, after determining the leakage level information of the pumped storage power station reservoir based on the reservoir capacity, the method further includes:

[0045] When the leakage level information indicates that the leakage level of the pumped storage power station reservoir is an abnormally stable leakage level, outputting early warning information indicating that the pumped storage power station reservoir has abnormally stable leakage;

[0046] When the leakage level information indicates that the leakage level of the pumped storage power station reservoir is an abnormal and unstable leakage level, early warning information indicating that abnormal and unstable leakage exists in the pumped storage power station reservoir is output.

[0047] In a second aspect, an embodiment of the present application provides a device for monitoring the leakage level of a reservoir, the device comprising:

[0048] A water volume change parameter acquisition module is used to obtain the topographic characteristic parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir at each moment during the monitoring period;

[0049] a reservoir capacity calculation module, configured to calculate the reservoir capacity of the upper reservoir, the lower reservoir, and the power station system at each moment in the monitoring period based on the first reservoir basin topographic characteristic parameter, the second reservoir basin topographic characteristic parameter, and the water volume change parameter, wherein the power station system is a combination of the upper reservoir, the lower reservoir, and a generator set connecting the upper reservoir and the lower reservoir;

[0050] The leakage level determination module is used to determine the leakage level information of the pumped storage power station reservoir based on the reservoir capacity.

[0051] Optionally, the reservoir capacity calculation module includes:

[0052] a total water volume parameter determination unit, configured to determine a first total water volume parameter of the upper reservoir at each moment and a second total water volume parameter of the lower reservoir at each moment based on the first reservoir basin topographic characteristic parameter and the second reservoir basin topographic characteristic parameter, and the water level parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period in the water volume change parameter;

[0053] a first reservoir capacity calculation unit, configured to calculate the first reservoir capacity of the power station system at each moment in the monitoring period based on the first total water volume parameter, the second total water volume parameter, and water volume change parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period;

[0054] A second reservoir capacity calculation unit is configured to calculate the second reservoir capacity of the upper reservoir at each moment in the monitoring period based on the first total water volume parameter and the water volume change parameter of the upper reservoir at each moment in the monitoring period;

[0055] The third reservoir capacity calculation unit is used to calculate the third reservoir capacity of the lower reservoir at each moment in the monitoring period based on the second total water volume parameter and the water volume change parameter of the lower reservoir at each moment in the monitoring period.

[0056] Optionally, the water volume change parameters include: water level parameters, precipitation parameters, evaporation parameters, water demand parameters, water replenishment parameters and additional water consumption parameters. The water demand parameters are used to indicate the amount of water transferred between the upper reservoir and the lower reservoir for power generation, and the additional water consumption parameters are parameters of non-power generation water consumption of the upper reservoir and the lower reservoir.

[0057] Optionally, the first reservoir capacity calculation unit includes:

[0058] The storage capacity of the first reservoir is calculated based on the following formula (1):

[0059] V 库容-整 =V 整 +V 蒸 +V 用 -V 降 (1)

[0060] In the above formula (1), V 库容-整 is the storage capacity of the first reservoir of the power station system at each moment during the monitoring period, V 整 is the total water volume parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 蒸 is the total evaporation parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 用 is the total additional water consumption parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 降 It is the total precipitation parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period.

[0061] Optionally, the second reservoir capacity calculation unit includes:

[0062] The storage capacity of the second reservoir is calculated based on the following formula (2):

[0063] V 库容-上 =V 上 +V 上-蒸 +V 上-用 -V 上-降 -V 电 (2)

[0064] In the above formula (2), V 库容-上 is the storage capacity of the second reservoir at each moment during the monitoring period, V 上 is the water volume parameter of the upper reservoir at each moment during the monitoring period, V 上-蒸 is the evaporation parameter of the upper reservoir at each moment during the monitoring period, V 上-用 is the additional water consumption parameter of the upper reservoir at each moment during the monitoring period, V 上-降is the precipitation parameter of the upper reservoir at each moment during the monitoring period, V 电 is the water demand parameter of the upper reservoir at each moment during the monitoring period. The water demand parameter during discharge power generation is a negative value, and the water demand parameter during pumped storage power generation is a positive value.

[0065] Optionally, the third reservoir capacity calculation unit includes:

[0066] The storage capacity of the third reservoir is calculated based on the following formula (3):

[0067] V 库容-下 =V 下 +V 下-蒸 +V 下-用 -V 下-降 -V 电 (3)

[0068] In the above formula (3), V 库容-下 is the storage capacity of the third reservoir at each moment during the monitoring period, V 下 is the water volume parameter of the lower reservoir at each moment during the monitoring period, V 下-蒸 is the evaporation parameter of the lower reservoir at each moment during the monitoring period, V 下-用 is the additional water consumption parameter of the lower reservoir at each moment during the monitoring period, V 下-降 is the precipitation parameter of the lower reservoir at each moment during the monitoring period, V 电 is the water demand parameter of the lower reservoir at each moment during the monitoring period. The water demand parameter during discharge power generation is positive, and the water demand parameter during pumped storage power generation is negative.

[0069] Optionally, the leakage level determination module includes:

[0070] a storage capacity change curve determining unit, configured to determine storage capacity change curves of the upper reservoir, the lower reservoir, and the power station system within the monitoring period based on the storage capacities of the upper reservoir, the lower reservoir, and the power station system at each moment within the monitoring period;

[0071] The first leakage level analysis unit is used to analyze and obtain leakage level information of the pumped storage power station reservoir based on the reservoir capacity change curve.

[0072] Optionally, the leakage level determination module includes:

[0073] a storage capacity curve determining unit, configured to determine storage capacity change curves of the upper reservoir, the lower reservoir, and the power station system within the monitoring period based on the storage capacities of the upper reservoir, the lower reservoir, and the power station system at each moment within the monitoring period;

[0074] a storage capacity change rate acquisition unit, configured to derive the storage capacity change curve based on a time parameter within the monitoring period to obtain a storage capacity change rate;

[0075] The second leakage level analysis unit is used to analyze and obtain leakage level information of the pumped storage power station reservoir based on the change rate curve corresponding to the storage capacity change rate.

[0076] Optionally, the leakage level information includes at least one of a non-abnormal leakage level, an abnormally stable leakage level, and an abnormally unstable leakage level.

[0077] Optionally, the device further comprises:

[0078] A water replenishment parameter acquisition module, used to obtain the water replenishment parameter in the water volume change parameter;

[0079] a first abnormal leakage determination module, configured to determine that abnormal leakage exists in the upper reservoir and / or the lower reservoir when the water replenishment amount parameter indicates that the water replenishment amount of the upper reservoir and / or the lower reservoir to the normal water level is greater than a reference water replenishment amount;

[0080] The second abnormal leakage determination module is used to determine whether abnormal leakage exists in the upper reservoir and / or the lower reservoir when the water replenishment parameter indicates that the time for the upper reservoir and / or the lower reservoir to replenish water to the normal water storage level is greater than the benchmark water replenishment time.

[0081] Optionally, when the water volume change parameter is a precipitation parameter, an evaporation parameter, a water demand parameter, and an additional water consumption parameter, the water volume change parameter acquisition module includes:

[0082] a total water volume change parameter acquisition unit, configured to acquire the total water volume change parameters of the upper reservoir and the lower reservoir respectively during the monitoring period;

[0083] The water volume change parameter acquisition unit is used to average the total water volume change parameter based on the number of moments in the monitoring period to obtain the water volume change parameter of the upper reservoir and the lower reservoir at each moment in the monitoring period.

[0084] Optionally, the device comprises:

[0085] a first warning information output module, configured to output warning information indicating that the pumped-storage power station reservoir has abnormally stable leakage when the leakage level information indicates that the leakage level of the pumped-storage power station reservoir is an abnormally stable leakage level;

[0086] The second warning information output module is used to output warning information that the pumped storage power station reservoir has abnormal and unstable leakage when the leakage level information indicates that the leakage level of the pumped storage power station reservoir is an abnormal and unstable leakage level.

[0087] In a third aspect, an embodiment of the present application provides an electronic device, including:

[0088] A memory, a processor, and a computer program stored in the memory and executable on the processor, wherein when the computer program is executed by the processor, any one of the above methods for monitoring the leakage level of a reservoir is implemented.

[0089] In a fourth aspect, an embodiment of the present application provides a readable storage medium. When the instructions in the storage medium are executed by a processor of an electronic device, the electronic device can execute any of the above-mentioned methods for monitoring the reservoir leakage level.

[0090] In an embodiment of the present application, by obtaining the topographical characteristic parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir of a pumped-storage power station, as well as the water volume variation parameters of the upper reservoir and the lower reservoir at each moment during the monitoring period, the reservoir capacity of the upper reservoir, the lower reservoir, and the power station system at each moment during the monitoring period is calculated based on the topographical characteristic parameters of the first reservoir basin, the second reservoir basin, and the water volume variation parameters. The power station system is a combination of the upper reservoir, the lower reservoir, and the units connecting the upper and lower reservoirs. Based on the reservoir capacity, the leakage level information of the pumped-storage power station reservoir is determined. This embodiment of the present application monitors the leakage of the pumped-storage power station reservoir in real time by monitoring the water volume variation parameters of the upper and lower reservoirs of the pumped-storage power station in real time. This solves the problem of abnormal leakage in the reservoir area being difficult to detect, judge, and issue early warnings in a timely manner through routine monitoring means and methods during normal operation of the reservoir, thereby improving the timeliness and accuracy of leakage monitoring of the power station reservoir. At the same time, it can achieve monitoring of different leakage levels, improving the accuracy of reservoir leakage monitoring.

[0091] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0092] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0093] Figure 1 A flowchart of a method for monitoring reservoir leakage level provided in an embodiment of the present application;

[0094] Figure 2 A schematic diagram of the water volume of a pumped storage power station provided in an embodiment of the present application;

[0095] Figure 3 A schematic diagram of a time interval provided in an embodiment of the present application;

[0096] Figure 4 A schematic diagram of a curve showing a change in storage capacity over time provided in an embodiment of the present application;

[0097] Figure 5 A schematic diagram of a storage capacity change rate versus time curve provided in an embodiment of the present application;

[0098] Figure 6 A schematic diagram of a curve showing storage capacity changing over time under abnormal leakage provided in an embodiment of the present application;

[0099] Figure 7 A schematic diagram of a curve showing the storage capacity change rate over time under abnormal leakage provided in an embodiment of the present application;

[0100] Figure 8 A schematic diagram of a monitoring process for the leakage level of a pumped storage power station reservoir provided in an embodiment of the present application;

[0101] Figure 9 A schematic diagram of the structure of a device for monitoring reservoir leakage level provided in an embodiment of the present application;

[0102] Figure 10 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0103] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are part of the embodiments of this application, not all of them. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0104] Reference Figure 1 , shows a flow chart of the steps of a method for monitoring reservoir leakage level provided by an embodiment of the present application, such as Figure 1 As shown, the method for monitoring the reservoir leakage level may include: step 101, step 102 and step 103.

[0105] Step 101: Obtain the topographic characteristic parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir at each moment during a monitoring period.

[0106] In this embodiment, a pumped-storage power station is a hydroelectric station that pumps water to an upper reservoir for storage. It uses electricity generated during off-peak periods to pump water to the upper reservoir and releases it to the lower reservoir for power generation during peak periods. This station converts excess power generated during periods of low grid load into high-value energy during peak periods. It also features frequency and phase modulation, stabilizing the power system's frequency and voltage, making it suitable for emergency backup.

[0107] When monitoring reservoir leakage at a pumped-storage power station, the topographical parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir can be obtained. The reservoir basin topography refers to the area submerged below the reservoir's normal water level. Because the reservoir basin topography is an integral part of reservoir construction, its specific geographic characteristics and dimensions vary depending on factors such as the reservoir's location, design, and hydrological conditions.

[0108] In practice, topographical data for the upper and lower reservoir basins can be obtained through a variety of measurement methods, such as laser scanning before impoundment or multi-beam topography during operation. This is not a limitation of the present invention, but the acquired data must be sufficient to establish a three-dimensional model of the upper and lower reservoir basins and, combined with water level information, calculate the total water volume in the basins. Topographical data for the upper and lower reservoir basins does not need to be measured in real time; instead, it can be measured and updated on a monthly, quarterly, or annual basis to minimize the impact of subsequent calculations of the actual total water volume of the reservoirs due to siltation and other factors during the reservoir's long-term operation.

[0109] When conducting leakage monitoring of a pumped storage power station reservoir, the water volume change parameters of the upper and lower reservoirs at each moment during the monitoring period can be obtained.

[0110] The monitoring period can be a predefined period for monitoring whether there is abnormal leakage in the reservoir. Figure 3 As shown, the monitoring period can be pre-set, at the monitoring start time t i-1 and monitoring end time t i The interval between them is Δt i , Δt i This is the monitoring period.

[0111] Water quantity change parameters may include: water level parameters, precipitation parameters, evaporation parameters, water demand parameters, water replenishment parameters and additional water consumption parameters. The water demand parameters may be used to indicate the amount of water transferred between the upper reservoir and the lower reservoir for power generation, and the additional water consumption parameters may be parameters for non-power generation water consumption of the upper reservoir and the lower reservoir.

[0112] In specific implementations, the real-time water level parameters of the upper and lower reservoirs can be obtained through a variety of measurement methods, such as deploying high-precision water level gauges at multiple locations in the reservoir area. This embodiment does not impose any restrictions on this, but it should meet the requirements that water level data can be obtained in real time and the total water volume in the reservoir basin can be calculated in combination with terrain information.

[0113] Meteorological data can be obtained from meteorological stations near the dam site. If no suitable meteorological station is available, data from a station in the project area can also be used. Meteorological data include evaporation and rainfall. Evaporation data measured by different types of evaporation pans must be converted to surface evaporation from a larger body of water. If direct evaporation data are unavailable, calculations can be made using formulas based on observed data such as temperature, humidity, wind speed, and radiation.

[0114] The water demand parameter is the water demand data of the power plant, which is determined by the dispatching and operation of the power plant and can be obtained through monitoring data of the power plant management system. It is generally the power generation flow of the unit during the period.

[0115] The additional water consumption parameter refers to the water consumption other than the water used for power generation in the power station, including but not limited to the water used for production and living in the power station, the water used for downstream ecological use, etc., which can be obtained through the monitoring data of the power station management system.

[0116] The water replenishment parameter refers to the amount of water added to the upper and lower reservoirs through the water replenishment facilities during operation, which can be obtained through the water replenishment system monitoring data.

[0117] The water volume change parameters can be stored according to the time history for subsequent viewing.

[0118] In this embodiment, when the water volume change parameter is a precipitation parameter, an evaporation parameter, a water demand parameter, and an additional water consumption parameter, the total water volume change parameter of the upper reservoir and the lower reservoir during the monitoring period can be obtained. The total water volume change parameter is averaged based on the number of moments in the monitoring period to obtain the water volume change parameter of the upper reservoir and the lower reservoir at each moment in the monitoring period. For example, taking the precipitation parameter as an example, the monitoring period is 1 hour, and the total precipitation parameter within the 1 hour of the monitoring period can be counted, and the total precipitation parameter / 60 minutes can be used to obtain the precipitation parameter per minute, and the precipitation parameter per minute is used as the precipitation change parameter at each moment in the monitoring period.

[0119] It can be understood that the above examples are merely examples listed for a better understanding of the technical solutions of the embodiments of the present application, and are not intended to be the sole limitation on the embodiments.

[0120] After obtaining the first reservoir basin topographic characteristic parameters of the upper reservoir and the second reservoir basin topographic characteristic parameters of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir at each moment during the monitoring period, step 102 is executed.

[0121] Step 102: Based on the first reservoir basin terrain characteristic parameters, the second reservoir basin terrain characteristic parameters and the water volume change parameters, the reservoir capacity of the upper reservoir, the lower reservoir and the power station system at each moment in the monitoring period is calculated, and the power station system is a combined system of the upper reservoir, the lower reservoir and the units connecting the upper reservoir and the lower reservoir.

[0122] The power station system is a system formed by the upper reservoir, the lower reservoir, and the units connecting the upper reservoir and the lower reservoir.

[0123] Reservoir capacity refers to the amount of water held by the upper reservoir, lower reservoir, and power station system at each moment during the monitoring period. After obtaining the topographic characteristic parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir of the pumped-storage power station, as well as the water volume variation parameters of the upper and lower reservoirs at each moment during the monitoring period, the reservoir capacity of the upper reservoir, lower reservoir, and power station system at each moment during the monitoring period can be calculated by combining the topographic characteristic parameters of the first reservoir basin, the second reservoir basin, and the water volume variation parameters.

[0124] In this example, the reservoir capacity is affected by the water replenishment and loss of the upper and lower reservoirs. The influencing parameters of the water volume of the pumped storage power station can be combined with Figure 2 A detailed description is given below.

[0125] like Figure 2 As shown, 1: water volume of the upper reservoir, 2: water volume of the lower reservoir, 3: evaporation of the upper reservoir, 4: evaporation of the lower reservoir, 5: precipitation of the upper reservoir, 6: precipitation of the lower reservoir, 7: water replenishment of the upper reservoir, 8: water replenishment of the lower reservoir, 9: water consumption of the upper reservoir, 10: water consumption of the lower reservoir, 11: leakage of the upper reservoir, 12: leakage of the lower reservoir, 13: water demand of the power station for discharge power generation, 14: water demand of the power station for pumped storage.

[0126] In the aforementioned water volume change parameters, the upper reservoir water volume can be calculated based on the upper reservoir topography and the upper reservoir water level at a given moment. The lower reservoir water volume can be calculated based on the lower reservoir topography and the lower reservoir water level at a given moment. The upper and lower reservoir water volumes are state physical quantities, that is, physical quantities that represent the state at each moment, and each moment corresponds to a reservoir water volume.

[0127] Parameters for excess water consumption, evaporation, precipitation, and water demand are all process quantities—physical quantities that represent the state of a given period of time. The cumulative amount of water information over this period must be calculated. For ease of subsequent calculations and explanation, process quantities are converted into state quantities: starting at the point of interest and moving forward for a certain time interval, the cumulative value of the physical quantity over that interval is calculated. The average of these values represents the state value of the physical quantity at each moment in the interval.

[0128] The implementation process of calculating reservoir capacity can be described in detail in combination with the following specific implementation methods.

[0129] In a specific implementation of the present application, the above step 102 may include:

[0130] Sub-step A1: Based on the terrain characteristic parameters of the first reservoir basin and the terrain characteristic parameters of the second reservoir basin, as well as the water level parameters of the upper reservoir and the lower reservoir in the water volume change parameters at each moment during the monitoring period, determine the first total water volume parameter of the upper reservoir at each moment and the second total water volume parameter of the lower reservoir at each moment.

[0131] In this embodiment, after obtaining the first reservoir basin topographic characteristic parameters and the second reservoir basin topographic characteristic parameters of the upper reservoir, the first total water volume parameter of the upper reservoir at each moment in the monitoring period and the second total water volume parameter of the lower reservoir at each moment in the monitoring period can be determined based on the first reservoir basin topographic characteristic parameters and the second reservoir basin topographic characteristic parameters, as well as the water level parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period in the water volume change parameters. Specifically, the first reservoir basin topographic characteristic parameters of the upper reservoir and the second reservoir basin topographic characteristic parameters of the lower reservoir, as well as the real-time water level parameters of the upper and lower reservoirs in the monitoring period, can be combined to calculate the total water volume parameters of the upper and lower reservoirs at each moment in the monitoring period, that is, to obtain the first total water volume parameter and the second total water volume parameter.

[0132] In this embodiment, the total water volume parameter of the reservoir can be calculated through modeling, such as describing the relationship between the surface area and water level of the reservoir through modeling, and calculating the total water volume based on this model and the water level. It is understandable that calculating the total water volume parameter of the reservoir is a very common method, and any method for calculating the total water volume parameter of the reservoir in the prior art can be applied to this embodiment.

[0133] After determining the first total water volume parameter of the upper reservoir at each moment and the second total water volume parameter of the lower reservoir at each moment during the monitoring period based on the first reservoir basin terrain characteristic parameters and the second reservoir basin terrain characteristic parameters, as well as the water level parameters of the upper reservoir and the lower reservoir in the water volume change parameters, sub-steps A2, A3 and A4 are executed.

[0134] Sub-step A2: Based on the first total water volume parameter, the second total water volume parameter, and the water volume change parameters of the upper reservoir and the lower reservoir at each moment during the monitoring period, calculate the first reservoir storage capacity of the power station system at each moment during the monitoring period.

[0135] After obtaining the first total water volume parameter, the second total water volume parameter, and the water volume change parameter of the upper reservoir and the lower reservoir at each moment in the monitoring period, the first reservoir storage capacity of the power station system at each moment in the monitoring period can be calculated based on the first total water volume parameter, the second total water volume parameter, and the water volume change parameter of the upper reservoir and the lower reservoir at each moment in the monitoring period. That is, the reservoir storage capacity of the power station system is the water volume of the power station system after deducting the influence of the evaporation, precipitation, and additional water consumption of the power station system as a whole. The calculation formula of the first reservoir storage capacity can be shown as the following formula (1):

[0136] V 库容-整 =V 整 +V 蒸 +V 用 -V 降 (1)

[0137] In the above formula (1), V 库容-整 is the storage capacity of the first reservoir of the power station system at each moment during the monitoring period, V 整 is the total water volume parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 蒸 is the total evaporation parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 用 is the total additional water consumption parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 降 It is the total precipitation parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period.

[0138] Sub-step A3: Based on the first total water volume parameter and the water volume change parameter of the upper reservoir at each moment during the monitoring period, calculate the second reservoir capacity of the upper reservoir at each moment during the monitoring period.

[0139] After obtaining the first total water volume parameter and the water volume change parameter of the upper reservoir at each moment during the monitoring period, the second reservoir capacity of the upper reservoir at each moment during the monitoring period can be calculated based on the first total water volume parameter and the water volume change parameter of the upper reservoir at each moment during the monitoring period. That is, the reservoir capacity of the upper reservoir is the water volume of the upper reservoir minus the evaporation, precipitation, other water consumption, and water demand of the power station. The calculation formula of the second reservoir capacity can be shown as the following formula (2):

[0140] V 库容-上 =V 上 +V上-蒸 +V 上-用 -V 上-降 -V 电 (2)

[0141] In the above formula (2), V 库容-上 is the storage capacity of the second reservoir at each moment during the monitoring period, V 上 is the water volume parameter of the upper reservoir at each moment during the monitoring period, V 上-蒸 is the evaporation parameter of the upper reservoir at each moment during the monitoring period, V 上-用 is the additional water consumption parameter of the upper reservoir at each moment during the monitoring period, V 上-降 is the precipitation parameter of the upper reservoir at each moment during the monitoring period, V 电 is the water demand parameter of the upper reservoir at each moment during the monitoring period. The water demand parameter during discharge power generation is negative, and the water demand parameter during pumped storage is positive.

[0142] Sub-step A4: Based on the second total water volume parameter and the water volume change parameter of the lower reservoir at each moment during the monitoring period, calculate the third reservoir capacity of the lower reservoir at each moment during the monitoring period.

[0143] After obtaining the second total water volume parameter and the water volume change parameter of the lower reservoir at each moment during the monitoring period, the third reservoir capacity of the lower reservoir at each moment during the monitoring period can be calculated based on the second total water volume parameter and the water volume change parameter of the lower reservoir at each moment during the monitoring period. That is, the reservoir capacity of the lower reservoir is the water volume of the lower reservoir minus the evaporation of the lower reservoir, precipitation, other water consumption and water demand of the power station. The calculation formula of the third reservoir capacity can be shown as the following formula (3):

[0144] V 库容-下 =V 下 +V 下-蒸 +V 下-用 -V 下-降 -V 电 (3)

[0145] In the above formula (3), V 库容-下 is the storage capacity of the third reservoir at each moment during the monitoring period, V 下 is the water volume parameter of the lower reservoir at each moment during the monitoring period, V 下-蒸 is the evaporation parameter of the lower reservoir at each moment during the monitoring period, V 下-用 is the additional water consumption parameter of the lower reservoir at each moment during the monitoring period, V 下-降 is the precipitation parameter of the lower reservoir at each moment during the monitoring period, V 电is the water demand parameter of the lower reservoir at each moment during the monitoring period. The water demand parameter during discharge power generation is positive, and the water demand parameter during pumped storage is negative.

[0146] After the reservoir capacities of the upper reservoir, the lower reservoir and the power station system at each moment in the monitoring period are calculated based on the first reservoir basin topographic characteristic parameters, the second reservoir basin topographic characteristic parameters and the water volume change parameters, step 103 is executed.

[0147] Step 103: Based on the reservoir capacity, determine the leakage level information of the pumped storage power station reservoir.

[0148] The leakage level information may be used to indicate the level of abnormal leakage in the reservoir of the pumped storage power station. In this example, the leakage level information may include at least one of: a non-abnormal leakage level, an abnormally stable leakage level, and an abnormally unstable leakage level.

[0149] After the reservoir capacity of the upper reservoir, lower reservoir, and power station system at each moment during the monitoring period is determined, the leakage level information of the pumped-storage power station reservoir can be determined based on the reservoir capacity. Warning information of the corresponding leakage level can then be output. Specifically, if the leakage level information indicates that the leakage level of the pumped-storage power station reservoir is an abnormally stable leakage level, warning information indicating that the pumped-storage power station reservoir has abnormally stable leakage can be output. If the leakage level information indicates that the leakage level of the pumped-storage power station reservoir is an abnormally unstable leakage level, warning information indicating that the pumped-storage power station reservoir has abnormally unstable leakage can be output. At the same time, corresponding leakage treatment suggestion information can be output. Specifically, this can be described in detail in conjunction with the following implementation process.

[0150] In a specific implementation of the present application, the storage capacity change curves of the upper reservoir, the lower reservoir and the power station system during the monitoring period can be determined based on the storage capacity of the upper reservoir, the lower reservoir and the power station system at each moment during the monitoring period, such as Figure 4 As shown, Figure 4 The middle straight line 15 indicates that under normal operating conditions of the power station, leakage is inevitable in the reservoir basin. Therefore, the reservoir capacity (i.e., the reservoir capacity in this embodiment) will gradually decrease over time. When the design and operation requirements are met, it is normal leakage and no treatment is required. Figure 4 The middle straight line 16 indicates that the pumped storage power station is in the water replenishment stage. Based on the storage capacity change curve, the leakage level information of the pumped storage power station reservoir is analyzed and obtained.

[0151] The storage capacity change curves for different leakage levels can be shown as follows: Figure 6 As shown, Figure 6 The line 19 shown indicates no abnormal leakage. However, there are two cases of abnormal leakage:

[0152] 1. When the storage capacity curve turns to a decreasing direction, and the curve after the turning is still approximately a slant line, such as Figure 6 As shown by the middle dotted line 20, it indicates that abnormal leakage occurs in the reservoir, and the leakage defect is stable and has no deterioration trend.

[0153] If the reservoir's daily leakage, i.e., the daily reduction in storage capacity, meets the reservoir's allowable daily leakage requirement, a yellow alert is issued and repairs are not required, but routine monitoring is strengthened. If the allowable daily leakage is exceeded, an orange alert is issued, requiring prompt repairs and enhanced monitoring.

[0154] 2. When the storage capacity curve turns to a decreasing direction and the curve becomes steeper after the turning, such as Figure 6 As shown by the midpoint line 21, it shows that the reservoir has abnormal leakage, and the leakage defect is unstable and has a tendency to deteriorate.

[0155] In the presence of abnormal leakage, even in the early stages of abnormal leakage, the daily leakage of the reservoir, that is, the daily reduction in storage capacity, may meet the requirements for the allowable daily leakage of the reservoir. However, since the defect has a tendency to gradually deteriorate and is more harmful, a red alert must still be issued, and leakage defects must be repaired in a timely manner and monitoring must be strengthened.

[0156] When the storage capacity curve of concern is the storage capacity curve of concern for the upper and lower reservoirs, the above analysis can be performed to determine whether the leakage occurs in the upper reservoir or the lower reservoir, thereby reducing the scope of maintenance.

[0157] Figure 6 In the figure, line 22 indicates that the pumped storage power station is in the water replenishment stage.

[0158] Among them, the allowable daily leakage of the reservoir can be the leakage requirement set by the power station itself, or the leakage requirement in the relevant specifications, such as the requirement in the "Design Specifications for Pumped Storage Power Stations" that the daily leakage should not exceed 0.02‰ to 0.05‰ of the total storage capacity. This embodiment does not limit the specific value of the allowable daily leakage of the reservoir.

[0159] In another specific implementation of the present application, a storage capacity change curve for the upper reservoir, lower reservoir, and power station system during the monitoring period can be determined based on the reservoir capacity of the upper reservoir, lower reservoir, and power station system at each moment during the monitoring period. The storage capacity change curve is then derived based on a time parameter within the monitoring period to obtain a storage capacity change rate. Finally, based on the change rate curve corresponding to the storage capacity change rate, leakage level information for the pumped-storage power station reservoir is analyzed and obtained.

[0160] In a specific implementation, the derivative can also be approximated by the slope of a secant line. That is, starting from the time point of interest and moving forward for a certain time interval, the increment of the storage capacity of interest within the time interval is calculated. The increment divided by the time interval is the slope of the secant line corresponding to the time instant, i.e., the rate of change of the storage capacity of interest (i.e., the rate of change of the storage capacity in this embodiment).

[0161] The change rate curve corresponding to the storage capacity change rate can be shown as follows: Figure 5 As shown, Figure 5 The middle line 17 represents the reservoir capacity change rate curve without abnormal leakage. Line 18 represents the pumped storage power station in the water replenishment stage.

[0162] After obtaining the storage capacity change rate of the power station system, the storage capacity change rate of the upper reservoir, and the storage capacity change rate of the lower reservoir respectively, the process lines of the overall storage capacity change rate of the power station system, the storage capacity change rate of the upper reservoir, and the storage capacity change rate of the lower reservoir over time can be drawn respectively and stored for subsequent viewing.

[0163] The storage capacity change rate curve for different leakage levels can be shown as follows: Figure 7 As shown, Figure 7 The line 23 shown indicates no abnormal leakage. However, there are two cases of abnormal leakage:

[0164] 1. When the storage capacity change rate curve changes suddenly, and the curve is approximately horizontal after the change, such as Figure 7 As shown by the middle dotted line 24, it indicates that abnormal leakage occurs in the reservoir, and the leakage defect is stable and has no deterioration trend.

[0165] If abnormal leakage exists and the rate of change in storage capacity meets the reservoir's allowable leakage rate, a yellow alert will be issued, and repairs will not be required, but routine monitoring will be strengthened. If the reservoir's allowable leakage rate has been exceeded, an orange alert will be issued, requiring prompt repairs and enhanced monitoring.

[0166] 2. When the storage capacity change rate curve changes suddenly, and the curve becomes a slant line and the change rate increases continuously, such as Figure 7 As shown by the midpoint line 26, it indicates that the reservoir has abnormal leakage, and the leakage defect is unstable and has a tendency to deteriorate.

[0167] In the presence of abnormal leakage, even if the storage capacity change rate may meet the reservoir's allowable leakage rate requirements in the early stages of the abnormal leakage, the defect has a tendency to gradually deteriorate and is more harmful, so a red alert must still be issued, and the leakage defect must be repaired in a timely manner and monitoring must be strengthened.

[0168] When the curves of the storage capacity change rate of concern are the curves of the storage capacity change rate of concern for the upper and lower reservoirs, the above analysis can be performed to determine whether the leakage occurs in the upper reservoir or the lower reservoir, thereby reducing the scope of maintenance.

[0169] The allowable leakage rate of the reservoir can be obtained by converting the allowable daily leakage of the reservoir used in the above description to time.

[0170] The embodiments of the present application can perform real-time monitoring and graded early warning of abnormal leakage during the normal operation of the reservoir. This method does not require the emptying of the reservoir to check for leakage, and can ensure the normal operation of the power station. The required data are all common data that need to be monitored during the normal operation of the power station. It is easy to use, simple to operate, and economical. The method and system are routine monitoring, which can detect problems and issue early warnings in a timely manner, and have strong immediacy. The method can preliminarily determine whether the state of the leakage defect is stable, and issue three different levels of early warnings accordingly, which improves the precision of the early warning. Different disposal suggestions are given according to different levels of early warning. For leakage that is in a stable state and meets the reservoir leakage requirements, the means of temporarily not repairing and strengthening monitoring can be adopted, which saves maintenance costs to a certain extent.

[0171] In another specific implementation of the present application, leakage monitoring can also be performed in combination with the water replenishment parameter. Specifically, it can be described in detail in combination with the following specific implementation methods.

[0172] In another specific implementation of the present application, after step 101, the following steps may be further included:

[0173] Step B1: Obtaining the water replenishment parameter in the water volume change parameter.

[0174] In this embodiment, the water replenishment amount parameter in the water amount change parameter can be obtained.

[0175] Step B2: When the water replenishment parameter indicates that the water replenishment amount of the upper reservoir and / or the lower reservoir to the normal water storage level is greater than the benchmark water replenishment amount, it is determined that there is abnormal leakage in the upper reservoir and / or the lower reservoir.

[0176] Step B3: When the water replenishment parameter indicates that the time taken for the upper reservoir and / or the lower reservoir to replenish water to a normal water level is longer than the benchmark water replenishment time, it is determined that abnormal leakage exists in the upper reservoir and / or the lower reservoir.

[0177] Furthermore, the water replenishment parameters can be used to determine whether there is abnormal leakage in the upper reservoir and / or lower reservoir.

[0178] Specifically, when the water replenishment parameter indicates that the water replenishment amount of the upper reservoir and / or the lower reservoir to the normal water storage level is greater than the benchmark water replenishment amount, it is determined that abnormal leakage exists in the upper reservoir and / or the lower reservoir.

[0179] When the water replenishment parameter indicates that the time required for the upper reservoir and / or the lower reservoir to replenish to the normal water storage level is longer than the benchmark water replenishment time, it is determined that abnormal leakage exists in the upper reservoir and / or the lower reservoir.

[0180] In practical implementation, the water replenishment rate of a power station is generally constant or changes slightly, such as Figure 7 As shown in the middle line 26, when the Figure 6 (or Figure 7 ) As shown by the dashed line 20 or dotted line 25 in the figure, if the amount of water required to replenish the reservoir to the normal water level exceeds the normal value or the replenishment time exceeds the normal replenishment time, it indicates that the reservoir is leaking abnormally and an early warning should be issued. However, the early warning level should be determined in combination with the above-mentioned reservoir capacity change analysis or reservoir capacity change rate analysis.

[0181] Among them, the normal water replenishment amount can be obtained based on the experience or regulations of the power station, or it can be calculated based on the allowable daily leakage of the reservoir, water replenishment interval, average evaporation rate, average precipitation rate, and average remaining water consumption used in the above description.

[0182] Next, combine Figure 8 The process of abnormal leakage level monitoring and early warning in power plants is described in detail.

[0183] Reference Figure 8 , shows a schematic diagram of a monitoring process for the leakage level of a pumped storage power station reservoir provided by an embodiment of the present application. Figure 8 As shown, the monitoring process of the leakage level of the pumped storage power station reservoir may include:

[0184] 1. Obtain real-time water level data of the upper and lower reservoirs, real-time meteorological data within the upper and lower reservoir areas, real-time water demand data of power station operation, real-time data of other water consumption, and water replenishment data.

[0185] 2. Obtain topographical characteristic data of the upper and lower reservoir basins, which can be updated on a monthly, quarterly or annual basis.

[0186] 3. Determine the water volume information for the entire power plant system and the upper and lower reservoirs. This information is calculated using the real-time water level data and terrain data of the upper and lower reservoirs. The sum of the upper and lower reservoir water volume information is the overall water volume information for the power plant system.

[0187] 4. Calculate the reservoir capacity of the entire power plant system and the upper and lower reservoirs, excluding evaporation, precipitation, other water consumption, and power plant water demand, and plot its time course. That is, calculate the reservoir capacity of interest according to formulas (1), (2), and (3) described above, and plot the corresponding capacity change curve.

[0188] 5. Take the time derivative of the process line of the reservoir's storage capacity changing with time to obtain the line of the reservoir's storage capacity change rate changing with time.

[0189] 6. Analyze the reservoir's storage capacity, storage capacity change rate, and water replenishment information to determine whether abnormal leakage occurs in the reservoir basin, the stability of the leakage, and its development trend.

[0190] 7. If there is any abnormality, an early warning will be issued according to the corresponding leakage level and monitoring will continue. If there is no abnormality, leakage monitoring will continue.

[0191] Specifically, in the presence of abnormal leakage, if the daily reservoir leakage, i.e., the daily reduction in the reservoir capacity, meets the reservoir's allowable daily leakage requirements, a yellow alert will be issued, leakage defect repair will not be performed, and daily monitoring will be strengthened. If the reservoir's allowable daily leakage has been exceeded, an orange alert will be issued, requiring timely leakage defect repair and strengthened monitoring. In the presence of abnormal leakage, even if the reservoir's daily leakage, i.e., the daily reduction in the reservoir capacity, meets the reservoir's allowable daily leakage requirements in the early stages of the abnormal leakage, the defect will gradually deteriorate and pose a greater risk, so a red alert will still be issued, requiring timely leakage defect repair and strengthened monitoring.

[0192] The present invention provides a method for monitoring reservoir leakage levels by obtaining topographical characteristic parameters of a first reservoir basin of an upper reservoir and a second reservoir basin of a lower reservoir of a pumped-storage power station, as well as water volume variation parameters of the upper and lower reservoirs at each moment during a monitoring period. Based on the topographical characteristic parameters of the first and second reservoir basins, and the water volume variation parameters, the reservoir capacities of the upper and lower reservoirs, as well as the power station system, at each moment during the monitoring period, are calculated. The power station system is a combination of the upper and lower reservoirs, and the units connecting the upper and lower reservoirs. Based on the reservoir capacities, leakage level information of the pumped-storage power station reservoir is determined. The present invention monitors leakage in the pumped-storage power station reservoir in real time by monitoring the water volume variation parameters of the upper and lower reservoirs of the pumped-storage power station in real time. This solves the problem of abnormal leakage in the reservoir area being difficult to detect, diagnose, and issue early warnings through routine monitoring methods and means during normal operation, thereby improving the timeliness and accuracy of power station reservoir leakage monitoring. Furthermore, monitoring of different leakage levels can be achieved, improving the accuracy of reservoir leakage monitoring.

[0193] Reference Figure 9 , shows a schematic diagram of the structure of a monitoring device for reservoir leakage level provided by an embodiment of the present application. Figure 9 As shown, the reservoir leakage level monitoring device 900 may include the following modules:

[0194] The water volume change parameter acquisition module 910 is used to obtain the topographic characteristic parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir at each moment during the monitoring period;

[0195] a reservoir capacity calculation module 920 configured to calculate the reservoir capacity of the upper reservoir, the lower reservoir, and the power station system at each moment during the monitoring period based on the first reservoir basin topographic characteristic parameter, the second reservoir basin topographic characteristic parameter, and the water volume change parameter, wherein the power station system is a combination of the upper reservoir, the lower reservoir, and the generator set connecting the upper reservoir and the lower reservoir;

[0196] The leakage level determination module 930 is configured to determine the leakage level information of the pumped storage power station reservoir based on the reservoir capacity.

[0197] Optionally, the reservoir capacity calculation module includes:

[0198] a total water volume parameter determination unit, configured to determine a first total water volume parameter of the upper reservoir at each moment and a second total water volume parameter of the lower reservoir at each moment based on the first reservoir basin topographic characteristic parameter and the second reservoir basin topographic characteristic parameter, and the water level parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period in the water volume change parameter;

[0199] a first reservoir capacity calculation unit, configured to calculate the first reservoir capacity of the power station system at each moment in the monitoring period based on the first total water volume parameter, the second total water volume parameter, and water volume change parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period;

[0200] A second reservoir capacity calculation unit is configured to calculate the second reservoir capacity of the upper reservoir at each moment in the monitoring period based on the first total water volume parameter and the water volume change parameter of the upper reservoir at each moment in the monitoring period;

[0201] The third reservoir capacity calculation unit is used to calculate the third reservoir capacity of the lower reservoir at each moment in the monitoring period based on the second total water volume parameter and the water volume change parameter of the lower reservoir at each moment in the monitoring period.

[0202] Optionally, the water volume change parameters include: water level parameters, precipitation parameters, evaporation parameters, water demand parameters, water replenishment parameters and additional water consumption parameters. The water demand parameters are used to indicate the amount of water transferred between the upper reservoir and the lower reservoir for power generation, and the additional water consumption parameters are parameters of non-power generation water consumption of the upper reservoir and the lower reservoir.

[0203] Optionally, the first reservoir capacity calculation unit includes:

[0204] The storage capacity of the first reservoir is calculated based on the following formula (1):

[0205] V 库容-整 =V 整 +V 蒸 +V 用 -V 降 (1)

[0206] In the above formula (1), V 库容-整 is the storage capacity of the first reservoir of the power station system at each moment during the monitoring period, V 整 is the total water volume parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 蒸 is the total evaporation parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 用 is the total additional water consumption parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 降 It is the total precipitation parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period.

[0207] Optionally, the second reservoir capacity calculation unit includes:

[0208] The storage capacity of the second reservoir is calculated based on the following formula (2):

[0209] V 库容-上 =V 上 +V 上-蒸 +V 上-用 -V 上-降 -V 电 (2)

[0210] In the above formula (2), V 库容-上 is the storage capacity of the second reservoir at each moment during the monitoring period, V 上 is the water volume parameter of the upper reservoir at each moment during the monitoring period, V 上-蒸 is the evaporation parameter of the upper reservoir at each moment during the monitoring period, V 上-用 is the additional water consumption parameter of the upper reservoir at each moment during the monitoring period, V 上-降 is the precipitation parameter of the upper reservoir at each moment during the monitoring period, V 电 is the water demand parameter of the upper reservoir at each moment during the monitoring period. The water demand parameter during discharge power generation is a negative value, and the water demand parameter during pumped storage power generation is a positive value.

[0211] Optionally, the third reservoir capacity calculation unit includes:

[0212] The storage capacity of the third reservoir is calculated based on the following formula (3):

[0213] V 库容-下 =V 下 +V 下-蒸 +V下-用 -V 下-降 -V 电 (3)

[0214] In the above formula (3), V 库容-下 is the storage capacity of the third reservoir at each moment during the monitoring period, V 下 is the water volume parameter of the lower reservoir at each moment during the monitoring period, V 下-蒸 is the evaporation parameter of the lower reservoir at each moment during the monitoring period, V 下-用 is the additional water consumption parameter of the lower reservoir at each moment during the monitoring period, V 下-降 is the precipitation parameter of the lower reservoir at each moment during the monitoring period, V 电 is the water demand parameter of the lower reservoir at each moment during the monitoring period. The water demand parameter during discharge power generation is positive, and the water demand parameter during pumped storage power generation is negative.

[0215] Optionally, the leakage level determination module includes:

[0216] a storage capacity change curve determining unit, configured to determine storage capacity change curves of the upper reservoir, the lower reservoir, and the power station system within the monitoring period based on the storage capacities of the upper reservoir, the lower reservoir, and the power station system at each moment within the monitoring period;

[0217] The first leakage level analysis unit is used to analyze and obtain leakage level information of the pumped storage power station reservoir based on the reservoir capacity change curve.

[0218] Optionally, the leakage level determination module includes:

[0219] a storage capacity curve determining unit, configured to determine storage capacity change curves of the upper reservoir, the lower reservoir, and the power station system within the monitoring period based on the storage capacities of the upper reservoir, the lower reservoir, and the power station system at each moment within the monitoring period;

[0220] a storage capacity change rate acquisition unit, configured to derive the storage capacity change curve based on a time parameter within the monitoring period to obtain a storage capacity change rate;

[0221] The second leakage level analysis unit is used to analyze and obtain leakage level information of the pumped storage power station reservoir based on the change rate curve corresponding to the storage capacity change rate.

[0222] Optionally, the leakage level information includes at least one of a non-abnormal leakage level, an abnormally stable leakage level, and an abnormally unstable leakage level.

[0223] Optionally, the device further comprises:

[0224] A water replenishment parameter acquisition module, used to obtain the water replenishment parameter in the water volume change parameter;

[0225] a first abnormal leakage determination module, configured to determine that abnormal leakage exists in the upper reservoir and / or the lower reservoir when the water replenishment amount parameter indicates that the water replenishment amount of the upper reservoir and / or the lower reservoir to the normal water level is greater than a reference water replenishment amount;

[0226] The second abnormal leakage determination module is used to determine whether abnormal leakage exists in the upper reservoir and / or the lower reservoir when the water replenishment parameter indicates that the time for the upper reservoir and / or the lower reservoir to replenish water to the normal water storage level is greater than the benchmark water replenishment time.

[0227] Optionally, when the water volume change parameter is a precipitation parameter, an evaporation parameter, a water demand parameter, and an additional water consumption parameter, the water volume change parameter acquisition module includes:

[0228] a total water volume change parameter acquisition unit, configured to acquire the total water volume change parameters of the upper reservoir and the lower reservoir respectively during the monitoring period;

[0229] The water volume change parameter acquisition unit is used to average the total water volume change parameter based on the number of moments in the monitoring period to obtain the water volume change parameter of the upper reservoir and the lower reservoir at each moment in the monitoring period.

[0230] Optionally, the device comprises:

[0231] a first warning information output module, configured to output warning information indicating that the pumped-storage power station reservoir has abnormally stable leakage when the leakage level information indicates that the leakage level of the pumped-storage power station reservoir is an abnormally stable leakage level;

[0232] The second warning information output module is used to output warning information that the pumped storage power station reservoir has abnormal and unstable leakage when the leakage level information indicates that the leakage level of the pumped storage power station reservoir is an abnormal and unstable leakage level.

[0233] The present invention provides a device for monitoring reservoir leakage levels. This device obtains topographical characteristic parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir of a pumped-storage power station, as well as water volume variation parameters of the upper and lower reservoirs at each moment during a monitoring period. Based on the first and second reservoir basin topographical characteristic parameters and the water volume variation parameters, the device calculates the reservoir capacity of the upper and lower reservoirs, and the power station system at each moment during the monitoring period. The power station system is a combination of the upper and lower reservoirs, and the generator sets connecting the upper and lower reservoirs. Based on the reservoir capacity, leakage level information of the pumped-storage power station reservoir is determined. The present invention monitors leakage in the pumped-storage power station reservoir in real time by monitoring the water volume variation parameters of the upper and lower reservoirs of the pumped-storage power station in real time. This solves the problem of abnormal leakage in the reservoir area being difficult to detect, diagnose, and issue early warnings through routine monitoring methods and means during normal operation, thereby improving the timeliness and accuracy of power station reservoir leakage monitoring. Furthermore, it enables monitoring of different leakage levels, improving the accuracy of reservoir leakage monitoring.

[0234] In addition, an embodiment of the present application also provides an electronic device, comprising: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the computer program, when executed by the processor, implements the above-mentioned method for monitoring the reservoir leakage level.

[0235] Figure 10 FIG. 1 shows a schematic structural diagram of an electronic device 1000 according to an embodiment of the present invention. Figure 10 As shown, the electronic device 1000 includes a central processing unit (CPU) 1001, which can perform various appropriate actions and processes according to computer program instructions stored in a read-only memory (ROM) 1002 or computer program instructions loaded from a storage unit 1008 into a random access memory (RAM) 1003. Various programs and data required for the operation of the electronic device 1000 can also be stored in the RAM 1003. The CPU 1001, ROM 1002, and RAM 1003 are connected to each other via a bus 1004. An input / output (I / O) interface 1005 is also connected to the bus 1004.

[0236] Multiple components in the electronic device 1000 are connected to the I / O interface 1005, including an input unit 1006, such as a keyboard, a mouse, a microphone, etc.; an output unit 1007, such as various types of displays, speakers, etc.; a storage unit 1008, such as a magnetic disk, an optical disk, etc.; and a communication unit 1009, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 1009 allows the electronic device 1000 to exchange information / data with other devices via a computer network such as the Internet and / or various telecommunication networks.

[0237] The various processes and processing described above may be executed by the processing unit 1001. For example, the method of any of the above embodiments may be implemented as a computer software program, which is tangibly contained in a computer-readable medium, such as the storage unit 1008. In some embodiments, part or all of the computer program may be loaded and / or installed on the electronic device 1000 via the ROM 1002 and / or the communication unit 1009. When the computer program is loaded into the RAM 1003 and executed by the CPU 1001, one or more actions in the method described above may be performed.

[0238] The present application also provides a computer-readable storage medium having a computer program stored thereon. When the computer program is executed by a processor, each process of the above-mentioned reservoir leakage level monitoring method embodiment is implemented, and the same technical effect is achieved. To avoid repetition, the description is omitted here. The computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

[0239] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0240] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, and of course can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk), and includes a number of instructions for enabling a terminal (which can be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in each embodiment of the present application.

[0241] The embodiments of the present application are described above in conjunction with the accompanying drawings, but the present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of this application, ordinary technicians in this field can also make many forms without departing from the purpose of this application and the scope of protection of the claims, all of which are within the protection of this application.

[0242] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed in the embodiments of this application can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of this application.

[0243] Those skilled in the art will clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0244] In the embodiments provided in this application, it should be understood that the disclosed devices and methods can be implemented in other ways. For example, the device embodiments described above are merely schematic. For example, the division of the units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0245] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0246] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0247] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes several instructions for enabling a computer device (which can be a personal computer, server, or network device, etc.) to execute all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

[0248] The above description is merely a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of the present application. Therefore, the scope of protection of the present application should be based on the scope of protection of the claims.

Claims

1. A method for monitoring the leakage level of a reservoir, characterized in that: The method comprises: Obtaining topographic characteristic parameters of a first reservoir basin of an upper reservoir and a second reservoir basin of a lower reservoir of a pumped storage power station, as well as water volume change parameters of the upper reservoir and the lower reservoir at each moment during a monitoring period; Based on the first reservoir basin topographic characteristic parameter, the second reservoir basin topographic characteristic parameter, and the water volume change parameter, the reservoir capacity of the upper reservoir, the lower reservoir, and the power station system at each moment in the monitoring period is calculated, where the power station system is a combined system of the upper reservoir, the lower reservoir, and the units connecting the upper reservoir and the lower reservoir; Determining leakage level information of the pumped storage power station reservoir based on the reservoir capacity; The calculation of the reservoir capacity of the upper reservoir, the lower reservoir, and the power station system at each moment in the monitoring period based on the first reservoir basin topographic characteristic parameter, the second reservoir basin topographic characteristic parameter, and the water volume change parameter includes: Determine a first total water volume parameter of the upper reservoir at each moment and a second total water volume parameter of the lower reservoir at each moment based on the first reservoir basin topographic characteristic parameter and the second reservoir basin topographic characteristic parameter, and the water level parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period in the water volume change parameter; Calculate the storage capacity of the first reservoir of the power station system at each moment in the monitoring period based on the first total water volume parameter, the second total water volume parameter, and the water volume change parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period; Based on the first total water volume parameter and the water volume change parameter of the upper reservoir at each moment during the monitoring period, the second reservoir storage capacity of the upper reservoir at each moment during the monitoring period is calculated; Based on the second total water volume parameter and the water volume change parameter of the lower reservoir at each moment during the monitoring period, a third reservoir capacity of the lower reservoir at each moment during the monitoring period is calculated; Wherein, determining the leakage level information of the pumped storage power station reservoir based on the reservoir capacity includes: Determine storage capacity change curves of the upper reservoir, the lower reservoir, and the power station system during the monitoring period based on the storage capacities of the upper reservoir, the lower reservoir, and the power station system at each moment during the monitoring period; Derivative the storage capacity change curve based on the time parameter within the monitoring period to obtain a storage capacity change rate; Based on the change rate curve corresponding to the storage capacity change rate, leakage level information of the pumped storage power station reservoir is analyzed and obtained.

2. The method according to claim 1, characterized in that The water volume change parameters include: water level parameters, precipitation parameters, evaporation parameters, water demand parameters, water replenishment parameters and additional water consumption parameters. The water demand parameters are used to indicate the amount of water transferred between the upper reservoir and the lower reservoir for power generation, and the additional water consumption parameters are parameters of non-power generation water consumption of the upper reservoir and the lower reservoir.

3. The method according to claim 2, characterized in that The calculating the first reservoir capacity of the power station system at each moment in the monitoring period based on the first total water volume parameter, the second total water volume parameter, and the water volume change parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period includes: The storage capacity of the first reservoir is calculated based on the following formula (1): V 库容-整 =V 整 +V 蒸 +V 用 -V 降 (1) In the above formula (1), V 库容-整 is the storage capacity of the first reservoir of the power station system at each moment during the monitoring period, V 整 is the total water volume parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 蒸 is the total evaporation parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 用 is the total additional water consumption parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period, V 降 It is the total precipitation parameter of the upper reservoir and the lower reservoir at each moment during the monitoring period.

4. The method according to claim 2, characterized in that The calculating of the second reservoir capacity of the upper reservoir at each moment in the monitoring period based on the first total water volume parameter and the water volume change parameter of the upper reservoir at each moment in the monitoring period includes: The storage capacity of the second reservoir is calculated based on the following formula (2): V 库容-上 =V 上 +V 上-蒸 +V 上-用 -V 上-降 -V 电 (2) In the above formula (2), V 库容-上 is the storage capacity of the second reservoir at each moment during the monitoring period, V 上 is the water volume parameter of the upper reservoir at each moment during the monitoring period, V 上-蒸 is the evaporation parameter of the upper reservoir at each moment during the monitoring period, V 上-用 is the additional water consumption parameter of the upper reservoir at each moment during the monitoring period, V 上-降 is the precipitation parameter of the upper reservoir at each moment during the monitoring period, V 电 is the water demand parameter of the upper reservoir at each moment during the monitoring period. The water demand parameter during discharge power generation is a negative value, and the water demand parameter during pumped storage power generation is a positive value.

5. The method according to claim 2, characterized in that The calculating of the third reservoir capacity of the lower reservoir at each moment in the monitoring period based on the second total water volume parameter and the water volume change parameter of the lower reservoir at each moment in the monitoring period includes: The storage capacity of the third reservoir is calculated based on the following formula (3): V 库容-下 =V 下 +V 下-蒸 +V 下-用 -V 下-降 -V 电 (3) In the above formula (3), V 库容-下 is the storage capacity of the third reservoir at each moment during the monitoring period, V 下 is the water volume parameter of the lower reservoir at each moment during the monitoring period, V 下-蒸 is the evaporation parameter of the lower reservoir at each moment during the monitoring period, V 下-用 is the additional water consumption parameter of the lower reservoir at each moment during the monitoring period, V 下-降 is the precipitation parameter of the lower reservoir at each moment during the monitoring period, V 电 is the water demand parameter of the lower reservoir at each moment during the monitoring period. The water demand parameter during discharge power generation is positive, and the water demand parameter during pumped storage power generation is negative.

6. The method according to claim 1, characterized in that The determining of leakage level information of the pumped storage power station reservoir based on the reservoir capacity includes: Determine storage capacity change curves of the upper reservoir, the lower reservoir, and the power station system during the monitoring period based on the storage capacities of the upper reservoir, the lower reservoir, and the power station system at each moment during the monitoring period; Based on the storage capacity change curve, leakage level information of the pumped storage power station reservoir is analyzed and obtained.

7. The method according to any one of claims 1 to 6, characterized in that The leakage level information includes at least one of a normal leakage level, an abnormally stable leakage level, and an abnormally unstable leakage level.

8. The method according to claim 2, characterized in that After obtaining the first reservoir basin topographic characteristic parameters of the upper reservoir and the second reservoir basin topographic characteristic parameters of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir at each moment during the monitoring period, the method further includes: Obtaining a water replenishment parameter from the water volume change parameter; When the water replenishment parameter indicates that the water replenishment amount of the upper reservoir and / or the lower reservoir to the normal water level is greater than the reference water replenishment amount, determining that abnormal leakage exists in the upper reservoir and / or the lower reservoir; or When the water replenishment parameter indicates that the time taken for the upper reservoir and / or the lower reservoir to replenish water to a normal water level is longer than the benchmark water replenishment time, it is determined that abnormal leakage exists in the upper reservoir and / or the lower reservoir.

9. The method according to claim 1, characterized in that When the water volume change parameter is a precipitation parameter, an evaporation parameter, a water demand parameter, and an additional water consumption parameter, obtaining the water volume change parameters of the upper reservoir and the lower reservoir at each moment during the monitoring period includes: Obtaining total water volume change parameters of the upper reservoir and the lower reservoir respectively during the monitoring period; The total water volume change parameter is averaged based on the number of moments in the monitoring period to obtain the water volume change parameter of the upper reservoir and the lower reservoir at each moment in the monitoring period.

10. The method according to claim 7, characterized in that After determining the leakage level information of the pumped storage power station reservoir based on the reservoir capacity, the method includes: When the leakage level information indicates that the leakage level of the pumped storage power station reservoir is an abnormally stable leakage level, outputting early warning information indicating that the pumped storage power station reservoir has abnormally stable leakage; When the leakage level information indicates that the leakage level of the pumped storage power station reservoir is an abnormal and unstable leakage level, early warning information indicating that abnormal and unstable leakage exists in the pumped storage power station reservoir is output.

11. A device for monitoring reservoir leakage level, characterized in that: The device comprises: A water volume change parameter acquisition module is used to obtain the topographic characteristic parameters of the first reservoir basin of the upper reservoir and the second reservoir basin of the lower reservoir of the pumped storage power station, as well as the water volume change parameters of the upper reservoir and the lower reservoir at each moment during the monitoring period; a reservoir capacity calculation module, configured to calculate the reservoir capacity of the upper reservoir, the lower reservoir, and the power station system at each moment in the monitoring period based on the first reservoir basin topographic characteristic parameter, the second reservoir basin topographic characteristic parameter, and the water volume change parameter, wherein the power station system is a combination of the upper reservoir, the lower reservoir, and a generator set connecting the upper reservoir and the lower reservoir; Wherein, the reservoir capacity calculation module includes: a total water volume parameter determination unit, configured to determine a first total water volume parameter of the upper reservoir at each moment and a second total water volume parameter of the lower reservoir at each moment based on the first reservoir basin topographic characteristic parameter and the second reservoir basin topographic characteristic parameter, and the water level parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period in the water volume change parameter; a first reservoir capacity calculation unit, configured to calculate the first reservoir capacity of the power station system at each moment in the monitoring period based on the first total water volume parameter, the second total water volume parameter, and water volume change parameters of the upper reservoir and the lower reservoir at each moment in the monitoring period; A second reservoir capacity calculation unit is configured to calculate the second reservoir capacity of the upper reservoir at each moment in the monitoring period based on the first total water volume parameter and the water volume change parameter of the upper reservoir at each moment in the monitoring period; a third reservoir capacity calculation unit, configured to calculate the third reservoir capacity of the lower reservoir at each moment in the monitoring period based on the second total water volume parameter and the water volume change parameter of the lower reservoir at each moment in the monitoring period; A leakage level determination module, configured to determine leakage level information of the pumped storage power station reservoir based on the reservoir capacity; Wherein, the leakage level determination module includes: a storage capacity curve determining unit, configured to determine storage capacity change curves of the upper reservoir, the lower reservoir, and the power station system within the monitoring period based on the storage capacities of the upper reservoir, the lower reservoir, and the power station system at each moment within the monitoring period; a storage capacity change rate acquisition unit, configured to derive the storage capacity change curve based on a time parameter within the monitoring period to obtain a storage capacity change rate; The second leakage level analysis unit is used to analyze and obtain leakage level information of the pumped storage power station reservoir based on the change rate curve corresponding to the storage capacity change rate.

12. An electronic device, characterized in that: include: The memory and the processor are communicatively connected to each other, the memory stores computer instructions, and the processor executes the reservoir leakage level monitoring method described in any one of claims 1 to 10 by executing corresponding computer instructions.

13. A readable storage medium, characterized in that: Computer instructions are stored, which are used to enable a computer to execute the method for monitoring the reservoir leakage level according to any one of claims 1 to 10.

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