A control method and related equipment for a hydropower station

Abstract

This application relates to the field of water conservancy engineering technology, and more particularly to a control method and related equipment for a hydropower station. The method comprises: obtaining the current water level corresponding to a target hydropower station and, based on the current water level, obtaining the current water storage capacity; obtaining the unit water inflow and unit water consumption corresponding to the target hydropower station; obtaining water volume changes based on the current water storage capacity, unit water inflow, and unit water consumption; and performing speed control of the hydropower station based on the water volume changes. This application helps stabilize the power grid frequency and reduce the impact on hydropower station equipment and electrical equipment.

Description

Technical Field

[0001] The present application relates to the technical field of water conservancy engineering, and in particular to a control method and related equipment for a hydropower station. Background Art

[0002] A hydropower station is a comprehensive water conservancy project that converts water energy into electricity. It is a site for generating electricity using hydropower resources and is a complex system of water, machinery, and electricity. A hydropower station generally consists of a reservoir formed by retaining and discharge structures, a water diversion system, a power plant, and electromechanical equipment. The power generation principle of a hydropower station is that high-level water from the reservoir flows through the diversion system into the power plant, driving the turbine generator sets to generate electricity. This electricity is then fed into the power grid via step-up transformers, switch stations, and transmission lines, thereby generating and supplying electricity. Due to its clean and renewable nature, hydropower has become an important power generation method in many countries and regions.

[0003] However, due to the different climate environments and topography in different regions, the water storage capacity of different hydropower stations at different times is also different. Different water volumes will lead to different turbine speeds and output powers, resulting in unstable grid frequency, which will ultimately have a great impact on hydropower station equipment and electrical equipment. Summary of the Invention

[0004] In order to help stabilize the power grid frequency and reduce the impact on hydropower station equipment and power-consuming equipment, the present application provides a control method and related equipment for a hydropower station.

[0005] In a first aspect, the present application provides a control method for a hydropower station, which adopts the following technical solution:

[0006] A control method for a hydropower station, comprising:

[0007] Obtaining a current water level corresponding to a target hydropower station, and obtaining a current water storage capacity based on the current water level;

[0008] Obtaining the unit water inflow and unit water consumption corresponding to the target hydropower station;

[0009] Obtaining water volume change based on the current water storage volume, the unit water intake volume, and the unit water consumption volume;

[0010] Based on the water volume change, the speed of the hydropower station is controlled.

[0011] By adopting the above technical solution, the current water level of the target hydropower station is first measured, and the current water storage capacity is calculated based on the current water level. Then, the unit water inflow and unit water consumption corresponding to the target hydropower station are calculated. Based on the current water storage capacity, unit water inflow and unit water consumption, the water volume change of the target hydropower station is calculated. Finally, the speed of the hydropower station is adjusted according to the water level change. By adjusting the speed of the hydropower station according to the water level change of the target hydropower station, the output power of the hydropower station generator set is changed by changing the power generation speed of the hydropower station, which helps to further stabilize the power grid frequency and reduce the impact on the hydropower station equipment and power-consuming equipment while meeting the electricity demand as much as possible.

[0012] Optionally, the speed control of the hydropower station based on the water volume change includes:

[0013] Obtain the current output power of the target hydropower station and the current load power of the power supply area corresponding to the target hydropower station;

[0014] Obtaining a power difference between the current output power and the current load power;

[0015] Determining whether the power difference exceeds a preset power threshold;

[0016] If the power difference exceeds the preset power threshold, determining whether the current load power exceeds the current output power;

[0017] If the current load power exceeds the current output power, obtaining the current maximum output power of the target hydropower station based on the water volume change;

[0018] Determining whether the current load power exceeds the current maximum output power;

[0019] If the current load power does not exceed the current maximum output power, the current load power is used as the target control amount;

[0020] The speed of the turbine of the target hydropower station is regulated based on the target control variable.

[0021] Optionally, after determining whether the power difference exceeds a preset power threshold, the method further includes:

[0022] If the power difference does not exceed the preset power threshold, determining whether the current time node is a peak power consumption phase;

[0023] If the current time node is the peak power consumption phase, then the current speed corresponding to the turbine is maintained;

[0024] If the current time node is not the peak power consumption stage, obtaining the power consumption power corresponding to the peak power consumption stage;

[0025] Obtaining the current maximum output power of the target hydropower station;

[0026] Determining whether the current maximum output power exceeds the power consumption in the stage;

[0027] If the current maximum output power exceeds the power consumption in the stage, maintaining the current speed corresponding to the turbine;

[0028] If the current maximum output power does not exceed the power consumption in the stage, obtaining the minimum matching power;

[0029] The speed of the turbine of the target hydropower station is regulated based on the minimum matching power.

[0030] Optionally, obtaining the current maximum output power of the target hydropower station includes:

[0031] Obtaining a current water storage capacity and a unit water replenishment capacity of the target hydropower station, and determining whether the current water storage capacity is greater than or equal to a first water storage capacity;

[0032] If the current water storage capacity is greater than or equal to the first water storage capacity, the current maximum output power is used as the current maximum output power;

[0033] If the current water storage capacity is less than the first water storage capacity, determining whether the current water storage capacity is greater than or equal to the second water storage capacity;

[0034] If the current water storage capacity is greater than the second water storage capacity, the unit water consumption corresponding to the electric power consumption in the stage is obtained based on a preset conversion rule;

[0035] Determining whether the unit water replenishment amount is greater than or equal to the unit water consumption;

[0036] If the unit water replenishment amount is greater than or equal to the unit water consumption, the current maximum output power is used as the current maximum output power.

[0037] Optionally, after determining whether the current water storage capacity is greater than or equal to the second water storage capacity if the current water storage capacity is less than the first water storage capacity, the method further includes:

[0038] If the current water storage capacity is less than the second water storage capacity, determining whether the current water storage capacity is less than a third water storage capacity;

[0039] If the current water storage capacity is less than the third water storage capacity, controlling the turbine to stop working based on a preset control rule;

[0040] If the current water storage capacity is greater than or equal to the third water storage capacity, obtaining the power usage level;

[0041] Determining whether the power consumption level exceeds a preset level threshold;

[0042] If the power level threshold exceeds the preset level threshold, determining whether the unit water replenishment amount is greater than or equal to the unit water consumption;

[0043] If the unit water replenishment amount is greater than or equal to the unit water consumption, obtaining a maximum matching power based on the current load power and the preset power threshold, and using the maximum matching power as the current maximum output power;

[0044] If the unit water replenishment amount is less than the unit water consumption, the minimum matching power is used as the current maximum output power.

[0045] Optionally, after determining whether the unit water replenishment amount is greater than or equal to the unit water consumption, the method further includes:

[0046] If the unit water replenishment amount is less than the unit water consumption, determining whether the current time node is a designated node;

[0047] If the current time node is the designated node, the highest matching power is used as the current maximum output power;

[0048] If the current time node is not the designated node, the lowest matching power is used as the current maximum output power.

[0049] Optionally, if the current water storage capacity is greater than or equal to the third water storage capacity, obtaining the electricity usage level includes:

[0050] If the current water storage capacity is greater than or equal to the third water storage capacity, obtaining regional information of the power supply area corresponding to the target hydropower station;

[0051] Based on the regional information, obtaining the urbanization level corresponding to the power supply area;

[0052] Determining whether the urbanization level exceeds an urbanization level threshold;

[0053] If the urbanization level exceeds the urbanization level threshold, setting the electricity consumption level to level one;

[0054] If the urbanization level does not exceed the urbanization level threshold, determining whether there is a target factor in the power supply area;

[0055] If the target factor exists in the power supply area, the power usage level is set to level one.

[0056] Optionally, after determining whether a target factor exists in the power supply area if the urbanization level does not exceed the urbanization level threshold, the method further includes:

[0057] If the target factor does not exist in the power supply area, obtaining the target temperature of the power supply area;

[0058] determining whether the target temperature exceeds a first temperature threshold;

[0059] If the target temperature exceeds the first temperature threshold, setting the power usage level to level one;

[0060] If the target temperature does not exceed the first temperature threshold, the power usage level is set to level 2 based on the preset determination rule.

[0061] In a second aspect, the present application also discloses a control system for a hydropower station, which adopts the following technical solution:

[0062] A control system for a hydropower station, comprising:

[0063] A first acquisition module is used to acquire a current water level corresponding to a target hydropower station, and acquire a current water storage capacity based on the current water level;

[0064] A second acquisition module is used to obtain the unit water inflow and unit water consumption corresponding to the target hydropower station;

[0065] A third acquisition module is used to obtain water volume changes based on the current water storage volume, the unit water intake volume and the unit water consumption volume;

[0066] The speed regulating module is used to perform speed regulation control on the hydropower station based on the change of the water volume.

[0067] By adopting the above technical solution, the current water level of the target hydropower station is first measured, and the current water storage capacity is calculated based on the current water level. Then, the unit water inflow and unit water consumption corresponding to the target hydropower station are calculated. Based on the current water storage capacity, unit water inflow and unit water consumption, the water volume change of the target hydropower station is calculated. Finally, the speed of the hydropower station is adjusted according to the water level change. By adjusting the speed of the hydropower station according to the water level change of the target hydropower station, the output power of the hydropower station generator set is changed by changing the power generation speed of the hydropower station, which helps to further stabilize the power grid frequency and reduce the impact on the hydropower station equipment and power-consuming equipment while meeting the electricity demand as much as possible.

[0068] In a third aspect, the present application provides a computer-readable storage medium, which adopts the following technical solution:

[0069] A computer-readable storage medium stores a computer program, and when the computer program is loaded by a processor, the method of the first aspect is executed.

[0070] By adopting the above technical solution, a computer program is generated based on the method of the first aspect and stored in a computer-readable storage medium so as to be loaded and executed by a processor. The computer-readable storage medium facilitates the readability and storage of the computer program.

[0071] In summary, this application has the following beneficial technical effects:

[0072] By adjusting the speed of the target hydropower station according to the water level changes, the output power of the hydropower station's generator set can be changed by changing the power generation speed of the hydropower station, which helps to further stabilize the grid frequency and reduce the impact on hydropower station equipment and power-consuming equipment while meeting electricity demand as much as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0073] Figure 1 This is a main flow chart of a control method for a hydropower station according to an embodiment of the present application;

[0074] Figure 2 is a flowchart of steps S201 to S208;

[0075] Figure 3 is a flowchart of steps S301 to S308;

[0076] Figure 4 is a flowchart of steps S401 to S406;

[0077] Figure 5 is a flowchart of steps S501 to S507;

[0078] Figure 6 is a flowchart of steps S601 to S603;

[0079] Figure 7 is a flowchart of steps S701 to S706;

[0080] Figure 8 is a flowchart of steps S801 to S804;

[0081] Figure 9 This is a module diagram of a control system of a hydropower station according to an embodiment of the present application.

[0082] Description of reference numerals:

[0083] 1. First acquisition module; 2. Second acquisition module; 3. Third acquisition module; 4. Speed ​​adjustment module. DETAILED DESCRIPTION

[0084] In a first aspect, the present application discloses a control method for a hydropower station.

[0085] Reference Figure 1 , a control method for a hydropower station, comprising steps S101 to S104:

[0086] Step S101: Obtain the current water level corresponding to the target hydropower station, and obtain the current water storage capacity based on the current water level.

[0087] Specifically, the target hydropower station is a hydropower station that needs to adjust the speed of the turbine, and the current water level is the water level of the target hydropower station at the current moment. In this embodiment, a water level measuring device is provided in the target hydropower station. The water level measuring device can be a water level gauge or a water level meter, etc. The current water level of the target reservoir can be measured by the water level measuring device; at the same time, at the place where the target reservoir is built, the corresponding standards between different water levels and water storage capacities are set according to the terrain of the target reservoir. Therefore, after measuring the current water level, the current water storage capacity can be calculated.

[0088] Step S102: Obtain the unit water inflow and unit water consumption corresponding to the target hydropower station.

[0089] Specifically, the unit water inflow refers to the amount of water flowing into the target hydropower station per unit time, including the first water volume flowing into the target hydropower station from upstream or tributary water systems, as well as the amount of rainwater entering the target hydropower station per unit time; the unit water consumption refers to the amount of water consumed by the target hydropower station per unit time, including the amount of water discharged through the hydropower station gate and the amount of water pumped through other equipment.

[0090] Step S103: Based on the current water storage capacity, unit water intake and unit water consumption, obtain water volume change.

[0091] Specifically, the water volume change refers to the change in the current water storage volume in the target hydropower station, including the increase in water storage volume, the decrease in water storage volume, and the current water storage volume.

[0092] Step S104: Based on the change in water volume, speed control is performed on the hydropower station.

[0093] The control method for a hydropower station provided in this embodiment first measures the current water level of a target hydropower station, calculates the current water storage capacity based on the current water level, then calculates the unit water inflow and unit water consumption corresponding to the target hydropower station, and calculates the water volume change of the target hydropower station based on the current water storage capacity, unit water inflow, and unit water consumption. Finally, the speed of the hydropower station is adjusted according to the water level change. By adjusting the speed of the hydropower station according to the water level change of the target hydropower station, the output power of the hydropower station's generator set is changed by changing the power generation speed of the hydropower station, which helps to further stabilize the grid frequency and reduce the impact on the hydropower station equipment and power-consuming equipment while meeting the electricity demand as much as possible.

[0094] Reference Figure 2 In one implementation of this embodiment, step S104 includes steps S201 to S208 for speed control of the hydropower station based on the water volume change.

[0095] Step S201: obtaining the current output power of the target hydropower station and the current load power of the power supply area corresponding to the target hydropower station.

[0096] Specifically, the target hydropower station is a hydropower station that needs to adjust the speed of the turbine, the current output power is the output power of the target hydropower station in the current unit time, and the current load power is the total power of all loads in the area powered by the target hydropower station in the current unit time. In this embodiment, the unit time can be one hour.

[0097] Step S202: Obtain the power difference between the current output power and the current load power.

[0098] Specifically, in this embodiment, the power difference is the absolute value of the difference between the current output power and the current load power.

[0099] Step S203: Determine whether the power difference exceeds a preset power threshold.

[0100] Specifically, the preset power threshold is a pre-set criterion for determining whether the power difference is too large. In this embodiment, the preset power threshold can be set according to relevant standards or user requirements.

[0101] Step S204: If the power difference exceeds the preset power threshold, it is determined whether the current load power exceeds the current output power.

[0102] Specifically, in this embodiment, if the power difference exceeds the preset power threshold, it indicates that the difference between the current output power and the current load power is large, the grid frequency is unstable, and there is a greater risk; by judging whether the current load power exceeds the current output power, the relationship between the current load power and the current output power can be known.

[0103] Step S205: If the current load power exceeds the current output power, the current maximum output power of the target hydropower station is obtained based on the change in water volume.

[0104] Specifically, in this embodiment, if the current load power exceeds the current output power, it indicates that the current load power is greater than the current output power, that is, the power grid is overloaded and the output power needs to be increased. However, before increasing the output power, it is necessary to determine whether the current load power exceeds the power regulation range of the target hydropower station. Therefore, the current maximum output power of the target hydropower station is further obtained, where the current maximum output power is the maximum output power that the target hydropower station can currently reach.

[0105] Step S206: Determine whether the current load power exceeds the current maximum output power.

[0106] Specifically, in this embodiment, by determining whether the current load power exceeds the current maximum output power, it can be determined whether the current load power exceeds the power regulation range of the target hydropower station.

[0107] Step S207: If the current load power does not exceed the current maximum output power, the current load power is used as the target control variable.

[0108] Specifically, if it does not exceed, it indicates that the current load power does not exceed the power regulation range of the target hydropower station. Therefore, the current load power is directly used as the target control amount to regulate the turbine speed. In this embodiment, the target control amount is the power value that the current output power ultimately needs to reach by adjusting the turbine speed.

[0109] Step S208: speed-regulating the turbine of the target hydropower station based on the target control amount.

[0110] Specifically, by adjusting the turbine speed, the output power is increased, and the current output power is matched with the current load power, thereby achieving the effect of stabilizing the grid frequency.

[0111] The control method of the hydropower station provided in this embodiment obtains a power difference based on the current output power and the current load power, and determines whether the power difference exceeds a preset power threshold. If so, it indicates that the gap between the current output power and the current load power is large, the grid frequency is very unstable, and the turbine speed needs to be adjusted. It is further determined whether the current load power exceeds the current output power. If so, it indicates that the current load power is much larger than the current output power. The current maximum output power is further obtained, and it is determined whether the current load power exceeds the current maximum output power. If not, it indicates that the current load power does not exceed the current maximum output power of the hydropower station. Therefore, the power demand can be directly used as the target control amount, and the turbine speed can be adjusted according to the target control amount.

[0112] After multiple judgments, it is determined whether the target hydropower station needs to adjust the turbine speed, and it is clarified how the target hydropower station should adjust the turbine speed under different circumstances; by adjusting the turbine speed, it helps to stabilize the power grid frequency, thereby helping to reduce the impact on hydropower station equipment and electrical equipment.

[0113] Reference Figure 3 In one implementation of this embodiment, after determining whether the power difference exceeds the preset power threshold in step S203, the process further includes steps S301 to S308:

[0114] Step S301: If the power difference does not exceed the preset power threshold, it is determined whether the current time node is a peak power consumption phase.

[0115] Specifically, if it does not exceed, it indicates that the difference between the current output power and the current load power is small, and the grid frequency is relatively stable. In order to further determine whether the turbine needs to be speed-regulated, it is determined whether the current time node is a peak power consumption stage. In this embodiment, a day can be divided into a peak power consumption stage, a normal power consumption stage, and a valley power consumption stage. Among them, the peak power consumption stage is the time interval with the highest load power in a day, the valley power consumption stage is the time interval with the lowest load power in a day, and the general power consumption stage is other time intervals excluding the peak power consumption stage and the valley power consumption stage. In this embodiment, the peak power consumption stage, the general power consumption stage, and the valley power consumption stage can be divided according to the actual power consumption situation in the power supply area, and can also be set according to user needs. For example, 11:30 to 13:00 and 17:00 to 23:00 every day are divided into peak power consumption stages.

[0116] Step S302: If the current time node is the peak power consumption phase, the current speed corresponding to the turbine is maintained.

[0117] Specifically, in this embodiment, if the current time node is at the peak power consumption stage, it indicates that the current time node is in the time interval with the highest load power in a day, and under normal circumstances, the total load will not have a large increase. Therefore, maintaining the current speed corresponding to the turbine will not only prevent the current load power from exceeding the power regulation range of the target hydropower station, but also keep the current output power and the current load power matched with each other, thereby maintaining the stability of the grid frequency.

[0118] Step S303: If the current time node is not the peak power consumption phase, then the power consumption corresponding to the peak power consumption phase is obtained.

[0119] Specifically, if the current time node is not in the peak power consumption stage, it means that the current time node is not in the time interval with the highest load power in a day. Under normal circumstances, when the current time node becomes the peak power consumption stage, the total load will have a large increase. In order to better adjust the turbine speed and further obtain the stage power consumption corresponding to the peak power consumption stage, in this embodiment, the stage power consumption is the total load per unit time in the peak power consumption stage, and the unit time can be one hour.

[0120] Step S304: Acquire the current maximum output power of the target hydropower station.

[0121] Specifically, in this embodiment, the current maximum output power is the maximum output power that the target hydropower station can achieve at the current moment.

[0122] Step S305: Determine whether the current maximum output power exceeds the stage power consumption.

[0123] Step S306: If the current maximum output power exceeds the stage power consumption, the current speed corresponding to the turbine is maintained.

[0124] Specifically, in this embodiment, if the current maximum output power exceeds the stage power consumption, it indicates that the maximum output power that the target hydropower station can achieve at the current moment exceeds the stage power consumption corresponding to the peak power consumption stage. In other words, even if the current moment is not the peak power consumption stage, when the peak power consumption stage comes, the current situation of the target hydropower station can still meet the user's electricity demand. Therefore, when the current output power matches the current load power, it is sufficient to maintain the current speed corresponding to the turbine, and there is no need to adjust the speed.

[0125] Step S307: If the current maximum output power does not exceed the stage power consumption, the minimum matching power is obtained.

[0126] Specifically, if the current maximum output power does not exceed the stage power consumption, it indicates that the current moment is not the peak power consumption stage, but when the peak power consumption stage comes, the current situation of the target hydropower station cannot meet the user's power demand. In order to output higher power as much as possible when the peak power consumption stage comes, so that the current output power and the current load power match each other, and further obtain the minimum matching power, in this embodiment, when the power difference does not exceed the preset power threshold, it means that the current output power and the current load power match each other. Therefore, any current load power will correspond to a minimum current output power and a maximum current output power that match the current output power and the current load power. The minimum matching power is the lowest current output power that matches the current output power and the current load power, and the highest matching power is the highest current output power that matches the current output power and the current load power.

[0127] Step S308: speed-regulating the turbine of the target hydropower station based on the minimum matching power.

[0128] Specifically, using the minimum matching power as the target control quantity of the target hydropower station can not only make the current output and the current load power match each other, thereby stabilizing the grid frequency, but also reduce the current output power as much as possible, so that when the peak power consumption period comes, the output power can be increased as much as possible, which helps to further narrow the power difference between the current output power and the current load power during the peak power consumption period, thereby helping to further improve the stability of the grid frequency.

[0129] Reference Figure 4 In one implementation of this embodiment, step S304 of obtaining the current maximum output power of the target hydropower station includes steps S401 to S406:

[0130] Step S401: Obtain the current water storage capacity and unit water replenishment capacity of the target hydropower station, and determine whether the current water storage capacity is greater than or equal to the first water storage capacity.

[0131] Specifically, in this embodiment, the current water storage capacity is the water storage capacity of the water storage area corresponding to the target hydropower station at the current moment, and the unit water replenishment capacity is the water capacity replenished to the water storage area corresponding to the target hydropower station per unit time.

[0132] Step S402: If the current water storage capacity is greater than or equal to the first water storage capacity, the current maximum output power is used as the current maximum output power.

[0133] Specifically, the first water storage capacity is a standard line that represents that the water storage capacity of the target hydropower station in the water storage area is very sufficient. If the current water storage capacity is greater than or equal to the first water storage capacity, it means that the current water storage capacity is very sufficient, and there is no need to worry about insufficient output power due to insufficient water storage. Therefore, the current maximum output power is the current maximum output power.

[0134] Step S403: If the current water storage capacity is less than the first water storage capacity, determine whether the current water storage capacity is greater than or equal to the second water storage capacity.

[0135] Specifically, the second water storage capacity is the standard line that represents the normal water storage capacity of the water storage area corresponding to the target hydropower station. If the current water storage capacity is greater than or equal to the second water storage capacity and less than the first water storage capacity, it means that the current water storage capacity is normal; in this embodiment, the first water storage capacity is greater than the second water storage capacity.

[0136] Step S404: If the current water storage capacity is greater than the second water storage capacity, the unit water consumption corresponding to the stage power consumption is obtained based on a preset conversion rule.

[0137] Specifically, although the current water storage capacity is normal, it is not very abundant. Therefore, the current maximum output power must be determined based on the actual situation, and the unit water consumption corresponding to the stage power consumption must be further obtained based on the preset conversion rules. In this embodiment, the preset conversion rules are pre-set rules for converting water volume and output power, for example, according to a specified speed, how much water is consumed to obtain the corresponding output power; the unit water consumption is the amount of water that needs to be consumed per unit time during the peak power consumption period under normal circumstances.

[0138] Step S405: Determine whether the unit water replenishment amount is greater than or equal to the unit water consumption.

[0139] Step S406: If the unit water replenishment amount is greater than or equal to the unit water consumption, the current maximum output power is used as the current maximum output power.

[0140] Specifically, in this embodiment, if the unit water replenishment amount is greater than or equal to the unit water consumption, it means that even if the peak electricity consumption period comes, the amount of water replenished to the water storage area corresponding to the target hydropower station per unit time is greater than the amount of water consumed per unit time. Therefore, there is no need to worry about insufficient output power due to insufficient water storage capacity, so the current maximum output power is the current maximum output power.

[0141] Reference Figure 5 In one implementation of this embodiment, if the current water storage capacity is less than the first water storage capacity in step S403, then after determining whether the current water storage capacity is greater than or equal to the second water storage capacity, the process further includes steps S501 to S507:

[0142] Step S501: If the current water storage capacity is less than the second water storage capacity, determine whether the current water storage capacity is less than the third water storage capacity.

[0143] Specifically, in this embodiment, the third water storage capacity is the minimum standard line representing the water storage capacity of the water storage area of ​​the target hydropower station. If the current water storage capacity is greater than or equal to the third water storage capacity and less than the second water storage capacity, it means that the current water storage capacity is small; if the current water storage capacity is less than the third water storage capacity, it indicates that the current water storage capacity is very small and does not meet the minimum water storage capacity standard; in this embodiment, the second water storage capacity is greater than the third water storage capacity.

[0144] Step S502: If the current water storage capacity is less than the third water storage capacity, the turbine is controlled to stop working based on a preset control rule.

[0145] Specifically, if the current water storage capacity is less than the third water storage capacity, it indicates that the current water storage capacity is very small and does not meet the minimum water storage capacity standard, and hydroelectric power generation cannot continue. Therefore, the turbine is controlled to stop working according to the preset control rules. In this embodiment, the preset control rules are pre-set rules for controlling the turbine to stop working. For example, in order to prevent the turbine from malfunctioning, it cannot stop immediately and the speed needs to be gradually reduced until the turbine stops working.

[0146] Step S503: If the current water storage capacity is greater than or equal to the third water storage capacity, the power consumption level is obtained.

[0147] Specifically, if the current water storage capacity is greater than or equal to the third water storage capacity, it indicates that the current water storage capacity is small. Generally, it is necessary to reduce the output power or stop the power supply. However, it is also necessary to judge in real time whether to continue the power supply based on factors such as the power consumption level; the power consumption level is the importance level of the power user or the power user's demand level for electricity. In this embodiment, the power demand level can be set to level one and level two, where the importance level corresponding to level one is greater than the importance level corresponding to level two.

[0148] Step S504: Determine whether the power consumption level exceeds a preset level threshold.

[0149] Specifically, the preset level threshold is used to determine whether the power consumption level meets the necessary power supply conditions when the current water storage capacity is between the third water storage capacity and the second water storage capacity. In this embodiment, the preset level threshold is set to level two.

[0150] Step S505: If the power level threshold exceeds the preset level threshold, it is determined whether the unit water replenishment amount is greater than or equal to the unit water consumption.

[0151] Specifically, in this embodiment, if the power consumption level threshold exceeds the preset level threshold, it indicates that the target hydropower station needs to continue generating electricity, and it is further determined whether the unit water replenishment amount is greater than or equal to the unit water consumption.

[0152] Step S506: If the unit water replenishment amount is greater than or equal to the unit water consumption, the highest matching power is obtained based on the current load power and the preset power threshold, and the highest matching power is used as the current maximum output power.

[0153] Specifically, in this embodiment, if the unit water replenishment amount is greater than or equal to the unit water consumption, it means that the amount of water replenished to the water storage area corresponding to the target hydropower station per unit time is more than the amount of water consumed per unit time. Therefore, there is no need to worry about the current water storage capacity continuing to decrease, so the highest matching power is used as the current maximum output power.

[0154] Step S507: If the unit water replenishment amount is less than the unit water consumption, the lowest matching power is used as the current maximum output power.

[0155] Specifically, if the unit water replenishment volume is less than the unit water consumption, it means that the amount of water replenished to the water storage area corresponding to the target hydropower station per unit time is less than the amount of water consumed per unit time. Therefore, the current water storage volume will continue to decrease. Therefore, in order to slow down the current water storage volume reduction rate, the minimum matching power is used as the current maximum output power.

[0156] Reference Figure 6 In one implementation of this embodiment, after determining whether the unit water replenishment amount is greater than or equal to the unit water consumption in step S405, steps S601 to S603 are also included:

[0157] Step S601: If the unit water replenishment amount is less than the unit water consumption, it is determined whether the current time node is a designated node.

[0158] Specifically, if the unit water replenishment volume is less than the unit water consumption, it indicates that when the peak electricity consumption period comes, the amount of water replenished to the water storage area corresponding to the target hydropower station per unit time is less than the amount of water consumed per unit time. Therefore, the current water storage volume will become less and less, and insufficient output power may occur due to insufficient water storage. In order to determine whether this situation will occur, it is further judged whether the current time node is a designated node. In this embodiment, the designated node is a pre-designated special time node, such as the rainy season or the rainy season is about to begin.

[0159] Step S602: If the current time node is a designated node, the highest matching power is used as the current maximum output power.

[0160] Specifically, in this embodiment, if the current time node is a designated node, it indicates that the current time node is the rainy season or is about to enter the rainy season, and the rainfall is relatively large, which will replenish more water to the water storage area corresponding to the target hydropower station. Therefore, there is no need to worry about insufficient output power due to insufficient water storage, so the highest matching power is used as the current maximum output power.

[0161] Step S603: If the current time node is not a designated node, the lowest matching power is used as the current maximum output power.

[0162] Specifically, in this embodiment, if the current time node is not a designated node, it means that the current time node is not in the rainy season and is far from the rainy season, and the rainfall is small, which will not replenish much water to the water storage area corresponding to the target hydropower station. Therefore, it is necessary to consider the situation where the output power is insufficient due to insufficient water storage. It is necessary to reduce the output power as much as possible while maintaining the stability of the power grid. Therefore, the lowest matching power is used as the current maximum output power.

[0163] Reference Figure 7 In one implementation of this embodiment, if the current water storage capacity is greater than or equal to the third water storage capacity in step S503, obtaining the power usage level includes steps S701 to S706:

[0164] Step S701: If the current water storage capacity is greater than or equal to the third water storage capacity, obtain the regional information of the power supply area corresponding to the target hydropower station.

[0165] Specifically, in this embodiment, the regional information includes urbanization information, population information, factory information, commercial information, temperature information, etc. within the power supply area.

[0166] Step S702: Based on the regional information, the urbanization level corresponding to the power supply area is obtained.

[0167] Specifically, the urbanization level of the power supply area can be determined based on the population size, per capita income, infrastructure construction conditions, etc. of the power supply area. In this embodiment, the urbanization level can be divided into Class A, Class B and Class C, among which Class A corresponds to the highest urbanization level and Class C corresponds to the lowest urbanization level.

[0168] Step S703: Determine whether the urbanization level exceeds the urbanization level threshold.

[0169] Specifically, in this embodiment, the urbanization level threshold level is used as a criterion for determining whether the electricity consumption level can be set to level one due to a high urbanization level.

[0170] Step S704: If the urbanization level exceeds the urbanization level threshold, the electricity consumption level is set to level one.

[0171] Specifically, in this embodiment, if the urbanization level exceeds the urbanization level threshold, it indicates that the urbanization level of the power supply area is very high and the demand for electricity is very large, so the electricity consumption level is set to level one.

[0172] Step S705: If the urbanization level does not exceed the urbanization level threshold, it is determined whether there is a target factor in the power supply area.

[0173] Specifically, if the urbanization level does not exceed the urbanization level threshold, it indicates that the urbanization level of the power supply area is not very high. In order to determine whether the demand for electricity in the power supply area is very large, it is further judged whether there are target factors in the power supply area. In this embodiment, the target factor is a factor that can set the electricity consumption level of the power supply area to level one, for example, there are very important facilities, factories (companies) or extremely important things in the power supply area, such as government meetings and very important business activities.

[0174] Step S706: If the target factor exists in the power supply area, the power consumption level is set to level one.

[0175] Specifically, in this embodiment, if a target factor exists in the power supply area, it indicates that there is a very important factor that requires electricity in the power supply area, so the electricity usage level is set to level one.

[0176] Reference Figure 8 In one implementation of this embodiment, if the urbanization level does not exceed the urbanization level threshold in step S705, then after determining whether there are target factors in the power supply area, steps S801 to S804 are further included:

[0177] Step S801: If there is no target factor in the power supply area, obtain the target temperature of the power supply area.

[0178] Specifically, the target temperature is the highest temperature in the power supply area from the current time node to a certain time zone in the future. In this embodiment, the time zone can be 1 hour or 2 hours.

[0179] Step S802: Determine whether the target temperature exceeds a first temperature threshold.

[0180] Specifically, the first temperature threshold is a criterion for determining whether the target temperature is too high. In this embodiment, the first temperature threshold may be 35°C.

[0181] Step S803: If the target temperature exceeds the first temperature threshold, the power level is set to level one.

[0182] Specifically, in this embodiment, if the target temperature exceeds the first temperature threshold, it indicates that the maximum temperature in the power supply area from the current moment to a certain time in the future is too high, which is unbearable for people and the demand for electricity is very high, so the electricity consumption level is set to level one.

[0183] Step S804: If the target temperature does not exceed the first temperature threshold, the power usage level is set to level 2 based on a preset determination rule.

[0184] Specifically, in this embodiment, if the target temperature does not exceed the first temperature threshold, it indicates that the maximum temperature in the power supply area from the current moment to a certain time in the future is not very high, people can bear it, and the demand for electricity is not very high, so the electricity consumption level is set to level two.

[0185] Secondly, the present application also discloses a control system for a hydropower station.

[0186] Reference Figure 9 , a control system for a hydropower station, comprising:

[0187] A first acquisition module is used to acquire a current water level corresponding to a target hydropower station, and acquire a current water storage capacity based on the current water level;

[0188] A second acquisition module is used to obtain the unit water inflow and unit water consumption corresponding to the target hydropower station;

[0189] A third acquisition module is used to obtain water volume changes based on the current water storage volume, the unit water intake volume and the unit water consumption volume;

[0190] The speed regulating module is used to perform speed regulation control on the hydropower station based on the change of the water volume.

[0191] On the third aspect, an embodiment of the present application discloses a computer-readable storage medium, and a computer program is stored in the computer-readable storage medium, wherein when the computer program is loaded by a processor, a control method of a hydropower station of the above embodiment is executed.

[0192] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A control method for a hydropower station, characterized in that: include: Obtaining a current water level corresponding to a target hydropower station, and obtaining a current water storage capacity based on the current water level; Obtaining the unit water inflow and unit water consumption corresponding to the target hydropower station; Obtaining water volume change based on the current water storage volume, the unit water intake volume, and the unit water consumption volume; Based on the water volume change, speed control is performed on the target hydropower station; The speed control of the target hydropower station based on the water volume change includes: Obtain the current output power of the target hydropower station and the current load power of the power supply area corresponding to the target hydropower station; Obtaining a power difference between the current output power and the current load power; Determining whether the power difference exceeds a preset power threshold; If the power difference exceeds the preset power threshold, determining whether the current load power exceeds the current output power; If the current load power exceeds the current output power, obtaining the current maximum output power of the target hydropower station based on the water volume change; Determining whether the current load power exceeds the current maximum output power; If the current load power does not exceed the current maximum output power, the current load power is used as the target control amount; regulating the speed of a turbine of the target hydropower station based on the target control amount; If the power difference does not exceed the preset power threshold, determining whether the current time node is a peak power consumption phase; If the current time node is the peak power consumption phase, then the current speed corresponding to the turbine is maintained; If the current time node is not the peak power consumption stage, obtaining the power consumption power corresponding to the peak power consumption stage; Determining whether the current maximum output power exceeds the power consumption in the stage; If the current maximum output power exceeds the power consumption in the stage, the current speed corresponding to the turbine is maintained; If the current maximum output power does not exceed the power consumption in the stage, obtaining the minimum matching power; regulating the speed of a turbine of the target hydropower station based on the minimum matching power; The obtaining of the current maximum output power of the target hydropower station includes: Obtaining a current water storage capacity and a unit water replenishment capacity of the target hydropower station, and determining whether the current water storage capacity is greater than or equal to a first water storage capacity; If the current water storage capacity is greater than or equal to the first water storage capacity, the current maximum output power is used as the current maximum output power; If the current water storage capacity is less than the first water storage capacity, determining whether the current water storage capacity is greater than or equal to the second water storage capacity; If the current water storage capacity is greater than the second water storage capacity, the unit water consumption corresponding to the electric power consumption in the stage is obtained based on a preset conversion rule; Determining whether the unit water replenishment amount is greater than or equal to the unit water consumption; If the unit water replenishment amount is greater than or equal to the unit water consumption, the current maximum output power is used as the current maximum output power; If the current water storage capacity is less than the second water storage capacity, determining whether the current water storage capacity is less than a third water storage capacity; If the current water storage capacity is less than the third water storage capacity, controlling the turbine to stop working based on a preset control rule; If the current water storage capacity is greater than or equal to the third water storage capacity, obtaining the power usage level; Determining whether the power consumption level exceeds a preset level threshold; If the electricity consumption level exceeds the preset level threshold, determining whether the unit water replenishment amount is greater than or equal to the unit water consumption; If the unit water replenishment amount is greater than or equal to the unit water consumption, obtaining a maximum matching power based on the current load power and the preset power threshold, and using the maximum matching power as the current maximum output power; If the unit water replenishment amount is less than the unit water consumption, the minimum matching power is used as the current maximum output power.

2. A control method for a hydropower station according to claim 1, characterized in that: After determining whether the unit water replenishment amount is greater than or equal to the unit water consumption, the method further includes: If the unit water replenishment amount is less than the unit water consumption, determining whether the current time node is a designated node; If the current time node is the designated node, the highest matching power is used as the current maximum output power; If the current time node is not the designated node, the lowest matching power is used as the current maximum output power.

3. A control method for a hydropower station according to claim 1, characterized in that: If the current water storage capacity is greater than or equal to the third water storage capacity, obtaining the power usage level includes: If the current water storage capacity is greater than or equal to the third water storage capacity, obtaining regional information of the power supply area corresponding to the target hydropower station; Based on the regional information, obtaining the urbanization level corresponding to the power supply area; Determining whether the urbanization level exceeds an urbanization level threshold; If the urbanization level exceeds the urbanization level threshold, setting the electricity consumption level to level one; If the urbanization level does not exceed the urbanization level threshold, determining whether there is a target factor in the power supply area; If the target factor exists in the power supply area, the power usage level is set to level one.

4. A control method for a hydropower station according to claim 3, characterized in that: After determining whether a target factor exists in the power supply area if the urbanization level does not exceed the urbanization level threshold, the method further includes: If the target factor does not exist in the power supply area, obtaining the target temperature of the power supply area; determining whether the target temperature exceeds a first temperature threshold; If the target temperature exceeds the first temperature threshold, setting the power usage level to level one; If the target temperature does not exceed the first temperature threshold, the power usage level is set to level 2 based on a preset determination rule.

5. A control system for a hydropower station, used to execute the method according to any one of claims 1 to 4, characterized in that: include: A first acquisition module is used to acquire a current water level corresponding to a target hydropower station, and acquire a current water storage capacity based on the current water level; A second acquisition module is used to obtain the unit water inflow and unit water consumption corresponding to the target hydropower station; A third acquisition module is used to obtain water volume changes based on the current water storage volume, the unit water intake volume and the unit water consumption volume; The speed regulating module is used to perform speed regulation control on the target hydropower station based on the change in the water volume.

6. A computer-readable storage medium storing a computer program, wherein: When the computer program is loaded into a processor, the method according to any one of claims 1 to 4 is executed.

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