Automatic power generation control method and device of double-adjustment type hydroelectric generating set and electronic equipment
By dynamically matching the unit regulation parameters of the dual-regulating hydropower unit and combining the coordination relationship between the blades and guide vanes, the problem of insufficient adaptability of the regulation parameters is solved, achieving excellent regulation performance and safety stability under various operating conditions, and meeting the requirements of the power grid.
Patent Information
- Application Number
- CN202511112285.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-08
- Publication Date
- 2025-12-12
AI Technical Summary
The automatic power generation control parameters of dual-regulator hydropower units have poor adaptability. During the adjustment of a single parameter, the unit's regulation performance and safety stability are affected to varying degrees, making it difficult to meet the requirements of the regulation performance indicators.
By acquiring the current power generation parameters of the target hydropower unit, its automatic power generation control mode is determined, and the corresponding unit regulation parameters are matched based on the current parameters to calculate the active power until the preset effective conditions are met. The regulation is carried out in combination with the coordination relationship between the blades and guide vanes to ensure excellent and stable regulation performance under various operating conditions.
This improves the regulation performance and safety stability of dual-regulator hydropower units under various operating conditions, meets the power grid's requirements for regulation performance, and enhances the stability and accident resistance of the power grid.
Smart Images
Figure CN121124207A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power system control technology, and in particular to an automatic power generation control method, device and electronic equipment for a dual-regulation hydropower unit. Background Technology
[0002] Automatic Generation Control (AGC) for hydropower units is crucial for maintaining grid frequency stability. It can rapidly provide power support during sudden large load changes in the grid, improving grid stability and safety, reducing grid frequency fluctuations, enhancing grid resilience to accidents, and improving power quality. Therefore, for units of a certain capacity, the grid requires hydropower units to have AGC functionality, and the requirements for the AGC control performance of these units are becoming increasingly stringent.
[0003] In related technologies, the AGC control method for hydropower units generally adopts a single fixed parameter adjustment. That is, in the opening mode, the computer monitoring system sends adjustment pulses to the speed control system, which controls the guide vanes to open or close to adjust the active power. The speed and other indicators are controlled by adjusting the pulse interval and pulse width sent by the monitoring system. This method can be well applied under the current head of conventional mixed-flow units.
[0004] However, the AGC control for dual-adjustment hydropower units has poor adaptability of its adjustment parameters. It does not take into account the flow characteristics of the unit under full head and the cooperative characteristics of the guide vanes and blades. During the adjustment of a single parameter, the unit's adjustment performance and safety stability are affected to varying degrees. Consequently, the performance indicators such as AGC adjustment rate K1, adjustment accuracy K2, and response time K3 cannot meet the requirements of the regional power grid's "Implementation Rules for Power Auxiliary Service Management" and "Implementation Rules for Power Grid Connection Operation Management". Moreover, this problem will be exacerbated as the operating conditions deviate from the current head and the optimal cooperative zone, and it urgently needs to be improved. Summary of the Invention
[0005] This application provides an automatic power generation control method, device, and electronic equipment for a dual-regulation hydropower unit to solve the technical problem in the related art that the automatic power generation control adjustment parameters of dual-regulation hydropower units have poor adaptability, and the unit's regulation performance and safety stability are affected to varying degrees during the adjustment of a single parameter, making it difficult to meet the requirements of the regulation performance indicators.
[0006] The first aspect of this application provides an automatic power generation control method for a dual-regulation hydropower unit, comprising the following steps: obtaining the current power generation parameters of a target hydropower unit; obtaining the current automatic power generation control mode of the target hydropower unit and determining whether the target hydropower unit meets preset automatic power generation control conditions; if the target hydropower unit meets the preset automatic power generation control conditions, matching corresponding unit regulation parameters based on the current power generation parameters, and calculating the active power under the control of the unit regulation parameters, and adjusting the unit regulation parameters based on the active power until the power generation under the current automatic power generation control mode meets preset effective conditions.
[0007] Based on the above technical means, the embodiments of this application can match the unit regulation parameters according to the actual operating conditions of the target hydropower unit and whether automatic power generation control is performed, thereby increasing the adaptability of the regulation parameters. The matching parameters ensure the regulation performance, and the closed-loop optimization further suppresses unstable factors, thereby ensuring that excellent and stable regulation performance can be achieved under various operating conditions and meeting the target requirements.
[0008] Optionally, in one embodiment of this application, the step of matching the corresponding unit adjustment parameters based on the current power generation parameters includes: when the current automatic power generation control mode is a preset whole-plant mode, selecting effective units for active power allocation based on a preset unit commissioning sequence table, and performing active power allocation calculation to obtain the active power allocation value for each effective unit; determining whether the active power allocation value of each effective unit is within the unit vibration zone; if there is no effective unit within the unit vibration zone, then matching the unit adjustment parameters based on the current power generation parameters of the effective units.
[0009] Based on the above technical means, the embodiments of this application can select effective units according to the unit commissioning sequence in the whole plant mode, and eliminate the influence of units in the vibration zone on the regulation effect.
[0010] Optionally, in one embodiment of this application, after determining whether the active power allocation value of each effective unit is within the unit vibration zone, the method further includes: if at least one effective unit is within the unit vibration zone, then based on the preset unit commissioning sequence table, adding a corresponding number of effective units.
[0011] Based on the above technical means, the embodiments of this application can add effective units by means of a unit commissioning sequence list when there are effective units in the vibration zone, so as to avoid the effective units operating in the vibration zone and ensure the regulation effect.
[0012] Optionally, in one embodiment of this application, matching the corresponding unit adjustment parameters based on the current power generation parameters includes: when the current automatic power generation control mode is a preset single-unit mode, matching the unit adjustment parameters by combining the current power generation parameters and the preset active power increase / decrease pulse parameter interpolation table in the preset single-unit mode.
[0013] Based on the above technical means, the embodiments of this application can match adjustment parameters in stand-alone mode according to the current power generation parameters and the active power increase / decrease pulse parameter interpolation table. By directly matching, the consumption of computing resources is reduced, and the parameter determination is achieved more quickly to ensure the adjustment effect.
[0014] Optionally, in one embodiment of this application, adjusting the unit adjustment parameters based on the active power until the power generation under the current automatic power generation control mode meets the preset effective conditions includes: calculating the deviation between the actual action amount corresponding to the active power and the target setpoint of the target unit under the automatic power generation control action; and determining whether the power generation meets the preset effective conditions based on the deviation and the preset active power control dead zone.
[0015] Based on the above technical means, the embodiments of this application can determine whether the dead zone has been exceeded by the deviation between the actual action quantity corresponding to the active power and the target setpoint under the automatic power generation control action, and make corresponding adjustments to ensure the adjustment effect.
[0016] Optionally, in one embodiment of this application, after matching the corresponding unit adjustment parameters based on the current power generation parameters, the method further includes: adjusting the blade opening of the target unit based on the unit adjustment parameters; and adjusting the corresponding guide vane opening based on the blade opening and a preset coordination curve.
[0017] Based on the above-mentioned technical means, the embodiments of this application can adjust the blade opening according to the coordination relationship curve between the blade and the guide vane while adjusting the blade opening according to the unit adjustment parameters, thereby realizing the coordinated control of the blade and the guide vane and avoiding the influence of single adjustment on the adjustment effect.
[0018] A second aspect of this application provides an automatic power generation control device for a dual-regulation hydropower unit, comprising: an acquisition module for acquiring current power generation parameters of a target hydropower unit; a judgment module for acquiring the current automatic power generation control mode of the target hydropower unit and judging whether the target hydropower unit meets preset automatic power generation control conditions; and a control module for, when the target hydropower unit meets the preset automatic power generation control conditions, matching corresponding unit regulation parameters based on the current power generation parameters, calculating the active power under the control of the unit regulation parameters, and adjusting the unit regulation parameters based on the active power until the power generation under the current automatic power generation control mode meets preset valid conditions.
[0019] Optionally, in one embodiment of this application, the control module includes: a first calculation unit, configured to, when the current automatic power generation control mode is a preset full-plant mode, select effective units for active power allocation based on a preset unit commissioning sequence table, and perform active power allocation calculation to obtain the active power allocation value for each effective unit; and a first matching unit, configured to determine whether the active power allocation value of each effective unit is within the unit vibration zone, and if there is no effective unit within the unit vibration zone, match the unit adjustment parameters based on the current power generation parameters of the effective unit.
[0020] Optionally, in one embodiment of this application, the control module further includes: a first adjustment unit, used to increase the corresponding number of effective units based on the preset unit commissioning sequence table when at least one effective unit is in the unit vibration zone.
[0021] Optionally, in one embodiment of this application, the control module includes: a second matching unit, used to match the unit adjustment parameters by combining the current power generation parameters and the preset active power increase / decrease pulse parameter interpolation table in the preset single-unit mode when the current automatic power generation control mode is a preset single-unit mode.
[0022] Optionally, in one embodiment of this application, the control module includes: a second calculation unit, configured to calculate the deviation between the actual action quantity corresponding to the active power and the target setpoint of the target unit under the automatic power generation control action; and a judgment unit, configured to determine whether the power generation meets the preset effective condition based on the deviation and the preset active power control dead zone.
[0023] Optionally, in one embodiment of this application, the control module further includes: a second adjustment unit, configured to adjust the blade opening of the target unit based on the unit adjustment parameters; and a third adjustment unit, configured to adjust the corresponding guide vane opening based on the blade opening and a preset coordination curve.
[0024] A third aspect of this application provides an electronic device, including: a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the automatic power generation control method for a dual-regulation hydropower unit as described in the above embodiments.
[0025] A fourth aspect of this application provides a computer-readable storage medium storing computer instructions for causing the computer to execute the automatic power generation control method for a dual-regulation hydropower unit as described in the above embodiments.
[0026] A fifth aspect of this application provides a computer program product, including a computer program, which, when executed, is used to implement the above-described automatic power generation control method for dual-regulation hydropower units.
[0027] This application's embodiments can match the unit's regulation parameters based on the actual operating conditions of the target hydropower unit and whether automatic power generation control is in effect, increasing the adaptability of the regulation parameters. The matched parameters ensure regulation performance, and closed-loop optimization further suppresses unstable factors, thereby ensuring excellent and stable regulation performance under various operating conditions and meeting the required specifications. This solves the technical problem in related technologies where the automatic power generation control regulation parameters of dual-regulation hydropower units have poor adaptability, and the unit's regulation performance and safety stability are affected to varying degrees during single-parameter regulation, making it difficult to meet the required regulation performance indicators.
[0028] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description
[0029] The above and / or additional aspects and advantages of this application will become apparent and readily understood from the following description of the embodiments taken in conjunction with the accompanying drawings, wherein: Figure 1 This is a flowchart of an automatic power generation control method for a dual-regulation hydropower unit according to an embodiment of this application; Figure 2 This is a flowchart of an automatic power generation control method for a dual-regulation hydropower unit according to an embodiment of this application; Figure 3 This is a schematic diagram of the structure of an automatic power generation control device for a dual-regulation hydropower unit according to an embodiment of this application; Figure 4 This is a schematic diagram of the structure of an electronic device provided according to an embodiment of this application. Detailed Implementation
[0030] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.
[0031] The following description, with reference to the accompanying drawings, outlines an automatic power generation control method, apparatus, and electronic equipment for a dual-adjustment hydropower unit according to embodiments of this application. Addressing the technical problem mentioned in the background art—that the automatic power generation control parameters for dual-adjustment hydropower units have poor adaptability, and that the unit's regulation performance and safety stability are affected to varying degrees during single-parameter adjustment, making it difficult to meet performance requirements—this application provides an automatic power generation control method for a dual-adjustment hydropower unit. In this method, the unit's regulation parameters can be matched based on the actual operating conditions of the target hydropower unit and whether automatic power generation control is performed, increasing the adaptability of the regulation parameters. Matched parameters ensure regulation performance, and closed-loop optimization further suppresses unstable factors, thereby ensuring excellent and stable regulation performance under various operating conditions and meeting performance requirements. This solves the technical problem in the related art—that the automatic power generation control parameters for dual-adjustment hydropower units have poor adaptability, and that the unit's regulation performance and safety stability are affected to varying degrees during single-parameter adjustment, making it difficult to meet performance requirements.
[0032] Specifically, Figure 1 This is a flowchart illustrating an automatic power generation control method for a dual-regulation hydropower unit provided in an embodiment of this application.
[0033] like Figure 1 As shown, the automatic power generation control method for the dual-regulation hydropower unit includes the following steps: In step S101, the current power generation parameters of the target hydropower unit are obtained.
[0034] In actual implementation, the embodiments of this application can collect the current power generation parameters of the target hydropower unit, including: guide vane opening, blade opening, active power, head, and unit water consumption rate signals. Among them, the guide vane opening is collected from the guide vane servo displacement signal and measured using a magnetostrictive displacement sensor; the blade opening is collected from the blade angle signal and measured using a magnetostrictive displacement sensor; the active power is collected from the generator stator voltage and stator current signals and measured using an active power transmitter; the head is calculated by collecting the volute inlet pressure signal and measured using a pressure transmitter; the water consumption rate is calculated by collecting the active power, head, and unit flow rate signals, wherein the active power and head are the signals mentioned above, and the unit flow rate is measured using an ultrasonic flow meter or a differential pressure transmitter.
[0035] In step S102, the current automatic power generation control mode of the target hydropower unit is obtained, and it is determined whether the target hydropower unit meets the preset automatic power generation control conditions.
[0036] Furthermore, embodiments of this application can identify the current automatic power generation control mode of the target hydropower unit, i.e., the AGC control mode. The AGC control mode can be divided into a plant-wide mode and a single-unit mode.
[0037] In the whole-plant mode, the power grid dispatch center issues the total active power target value to the entire hydropower station, and the power station computer monitoring system autonomously allocates the total load to each unit; it can dynamically optimize the output of each unit based on constraints such as unit efficiency, head characteristics, and vibration zone avoidance (such as allowing high-efficiency units to carry more load).
[0038] In stand-alone mode, the power grid dispatch center directly specifies the active power target value for each unit, and the unit responds to the command independently; the power plant control system only forwards the command and does not participate in load optimization.
[0039] In the current automatic generation control mode, the embodiments of this application can further determine whether the AGC is activated, and then proceed to determine the next step of the unit adjustment parameters.
[0040] In this embodiment of the application, the deviation between the given value of the scheduling AGC and the current value of the active power of the entire plant can be compared with the active power control dead zone to determine whether the AGC should be activated.
[0041] In step S103, if the target hydropower unit meets the preset automatic power generation control conditions, the corresponding unit adjustment parameters are matched based on the current power generation parameters, and the active power in the current automatic power generation control mode is calculated under the control of the unit adjustment parameters. The unit adjustment parameters are then adjusted based on the active power until the power generation in the current automatic power generation control mode meets the preset effective conditions.
[0042] As one possible implementation method, in the case of AGC operation, the unit adjustment parameters can be matched according to the current power generation parameters. After controlling the target hydropower unit using the unit adjustment parameters, the effectiveness of the current control can be determined according to the active power under control. If it is effective, it means that the AGC adjustment is completed. Otherwise, the unit adjustment parameters are re-determined until the preset effective conditions are met.
[0043] The preset valid conditions can be set according to the actual situation, and no specific restrictions are imposed here.
[0044] Optionally, in one embodiment of this application, matching the corresponding unit adjustment parameters based on the current power generation parameters includes: when the current automatic power generation control mode is a preset full-plant mode, selecting effective units for active power allocation based on a preset unit commissioning sequence table, and performing active power allocation calculation to obtain the active power allocation value for each effective unit; determining whether the active power allocation value of each effective unit is within the unit vibration zone; if there are no effective units within the unit vibration zone, then matching the unit adjustment parameters based on the current power generation parameters of the effective units.
[0045] In the full-plant mode, this embodiment of the application can sort the water consumption rates of each unit from smallest to largest after the last AGC adjustment, confirm the order of units to be adjusted for active power, and select the number of units n as effective units in descending order of unit commissioning. The number of units n should meet the following conditions: , in, for i Rated output of Unit No. 1 The given value is for AGC.
[0046] Based on the given value of the scheduling AGC and the number of units put into operation, the embodiments of this application can dynamically allocate the active power of the units and determine whether there are any effective units in the unit vibration zone. If there are no effective units in the unit vibration zone, the corresponding unit adjustment parameters are matched by calling the monitoring active power increase pulse parameter difference table based on the current power generation parameters of the effective units. The specific matching using the monitoring active power increase pulse parameter difference table will be described below.
[0047] Based on the above technical means, the embodiments of this application can select effective units according to the unit commissioning sequence in the whole plant mode, and eliminate the influence of units in the vibration zone on the regulation effect.
[0048] Optionally, in one embodiment of this application, after determining whether the active power allocation value of each effective unit is in the unit vibration zone, the method further includes: if at least one effective unit is in the unit vibration zone, then based on a preset unit commissioning sequence table, adding the corresponding number of effective units.
[0049] In some embodiments, if at least one effective unit is in the unit vibration zone, the embodiments of this application can add the corresponding effective units in sequence according to the unit commissioning sequence table.
[0050] Based on the above technical means, the embodiments of this application can add effective units by means of a unit commissioning sequence list when there are effective units in the vibration zone, so as to avoid the effective units operating in the vibration zone and ensure the regulation effect.
[0051] Optionally, in one embodiment of this application, matching the corresponding unit adjustment parameters based on the current power generation parameters includes: when the current automatic power generation control mode is a preset single-unit mode, matching the unit adjustment parameters by combining the current power generation parameters and the preset active power increase / decrease pulse parameter interpolation table in the preset single-unit mode.
[0052] In actual implementation, in stand-alone mode, the embodiments of this application can call the preset active power increase / decrease pulse parameter interpolation table, select the corresponding adjustment parameters according to different water heads and different operating conditions, and issue instructions to the speed regulation system to adjust the speed according to the adjustment parameters.
[0053] The pulse parameter interpolation table is an interpolation table formed by the active power pulse parameter sets of AGC under different heads and operating conditions. Different operating conditions represent the state of the unit under different loads in single-unit mode, and the state of the unit under different loads and different unit combinations in plant-wide mode. The adjustment parameters are the pulse width and pulse interval time of the active power adjustment signal sent to the speed control system.
[0054] Based on the above technical means, the embodiments of this application can match adjustment parameters in stand-alone mode according to the current power generation parameters and the active power increase / decrease pulse parameter interpolation table. By directly matching, the consumption of computing resources is reduced, and the parameter determination is achieved more quickly to ensure the adjustment effect.
[0055] Optionally, in one embodiment of this application, adjusting the active power regulating unit parameters until the power generation under the current automatic power generation control mode meets the preset valid conditions includes: calculating the deviation between the actual action quantity corresponding to the active power and the target setpoint of the target unit under the automatic power generation control action; and determining whether the power generation meets the preset valid conditions based on the deviation and the preset active power control dead zone.
[0056] As one possible implementation method, embodiments of this application can calculate the deviation between the actual active power output and the AGC setpoint (i.e., the deviation between the actual active power output and the target setpoint of the target unit under automatic generation control), and compare it with the active power control dead zone until the deviation value is within the active power control dead zone range, at which point the AGC adjustment is complete. The control dead zone can be set according to actual conditions.
[0057] Optionally, in one embodiment of this application, after matching the corresponding unit regulation parameters based on the current power generation parameters, the method further includes: adjusting the blade opening of the target unit based on the unit regulation parameters; and adjusting the corresponding guide vane opening based on the blade opening and a preset coordination curve.
[0058] In some embodiments, the present application embodiments can adjust the blade opening according to the unit's adjustment parameters, such as the adjustment command received by the speed control system from the monitoring system. Specifically, the monitoring system outputs a pulse signal to the speed control system, and the speed control system adjusts the blade opening according to the pulse signal. The guide vane opening is adjusted according to the coordination curve. The coordination curve is an optimized relationship curve between the guide vane opening and the blade opening under different heads. It is a core control parameter of dual-adjustment hydro-generator units (such as axial-flow propeller and through-flow units), defining the matching relationship between the guide vane opening (α) and the blade angle (φ) when the unit achieves optimal efficiency operation under different heads (H). The coordination curve can be obtained through laboratory testing.
[0059] For example, in the embodiments of this application, the speed control system can use the matched unit adjustment parameters (including the internal parameters of the control algorithm required by the control system (such as the governor) to respond quickly, smoothly and accurately to the AGC active power command under the current operating conditions (head, load, etc.)) to calculate how to adjust the actuator. The speed control system sends a pulse signal to directly adjust the blade angle (opening).
[0060] Furthermore, in this embodiment of the application, the preset coherence curve corresponding to the current actual head can be found, and then the optimal guide vane opening value corresponding to this curve can be found based on the adjusted blade opening.
[0061] Based on the above technical means, the embodiments of this application can adjust the blade opening according to the unit adjustment parameters while adjusting the blade opening according to the coordination relationship curve between the blade and the guide vane. This ensures efficiency and safety through active blade adjustment (main adjustment) and guide vane following adjustment (coordination), and avoids the single adjustment affecting the adjustment effect.
[0062] Combination Figure 2 As shown, the working principle of the automatic power generation control method for dual-commissioned hydropower units in this application is explained in detail using an embodiment. Taking an axial-flow propeller-type hydropower unit as an example, in this embodiment, the axial-flow propeller-type hydropower unit is equipped with AGC function, the governor is set to open mode, and signals of guide vane opening, blade opening, active power, head, and unit water consumption rate are collected. Active power dead zone and unit vibration zone are set; the AGC control mode is determined; the monitoring system's host computer receives the scheduling AGC command and performs active power allocation according to the AGC control mode; the monitoring system sends switch quantity increase / decrease pulse signals to control the governor, wherein the pulse width and interval time of the increase / decrease pulses are selected according to the interpolation table of increase / decrease pulse parameters under different heads; the governor adjusts the blade opening according to the monitoring system command, and the guide vane opening is adjusted according to the coordination relationship curve; the actual AGC action quantity and the command deviation quantity are calculated and compared with the power dead zone until the deviation value is within the control dead zone range, thus completing the AGC adjustment.
[0063] As shown in Figure 2, the embodiments of this application may include the following steps: Step S201: Activate AGC function, collect signals of unit guide vane opening, blade opening, active power, head, and water consumption rate, set active power dead zone and unit vibration zone, and determine AGC control mode. If it is plant-wide mode, proceed to step S206; if it is single-unit mode, proceed to step S202.
[0064] Step S202: Compare the deviation between the given value of the scheduling AGC and the current value of the active power of the whole plant with the active power control dead zone to determine whether the AGC should be activated. If it is not activated, return to step S201; if it is activated, proceed to step S203.
[0065] Step S203: Call the AGC active power increase / decrease pulse parameter interpolation table of the monitoring system, select the corresponding adjustment parameter according to different water heads and different operating conditions, and the monitoring system sends the instruction to the speed control system according to the adjustment parameter, and proceeds to step S204.
[0066] In step S204, the speed control system receives the adjustment command from the monitoring system, adjusts the blade opening according to the pulse signal, adjusts the guide vane opening according to the coordination curve, and then proceeds to step S205.
[0067] Step S205: Calculate the deviation between the actual active power action and the AGC setpoint, and compare it with the active power control dead zone until the deviation is within the active power control dead zone range. The AGC adjustment is then complete, and the process returns to step S201.
[0068] Step S206: Compare the deviation between the given value of the scheduling AGC and the current value of the single machine's active power with the active power control dead zone to determine whether the AGC should be activated. If it is not activated, return to step S201; if it is activated, proceed to step S207.
[0069] Step S207: Based on the water consumption rate of each unit after the last AGC adjustment, sort them from smallest to largest, confirm the order of units to be adjusted for active power, select the number of units n from high to low according to the unit commissioning order, and proceed to step S208.
[0070] The number of generating units, n, should satisfy the following conditions: , in, for i Rated output of Unit No. 1 The given value is for AGC.
[0071] Step S208: Dynamically allocate the active power of the generating units according to the given value of the scheduling AGC and the number of generating units put into operation, and proceed to step S209.
[0072] Step S209: Determine whether the active power allocation value of each unit (effective unit) is within the unit vibration zone. If yes, add 1 unit to the unit commissioning sequence list and return to step S207 to redistribute the active power of each unit; otherwise, proceed to step S203.
[0073] The automatic power generation control method for dual-regulator hydropower units proposed in this application can match the unit's regulation parameters based on the actual operating dynamics of the target hydropower unit and whether automatic power generation control is performed. This increases the adaptability of the regulation parameters, ensures regulation performance through matched parameters, and further suppresses unstable factors through closed-loop optimization. This ensures excellent and stable regulation performance under various operating conditions, meeting the required specifications. Therefore, this solves the technical problem in related technologies where the automatic power generation control regulation parameters for dual-regulator hydropower units have poor adaptability, and the unit's regulation performance and safety stability are affected to varying degrees during single-parameter adjustment, making it difficult to meet the required regulation performance indicators.
[0074] Next, referring to the accompanying drawings, we describe the automatic power generation control device for a dual-regulation hydropower unit according to an embodiment of this application.
[0075] Figure 3 This is a block diagram of the automatic power generation control device for a dual-adjustment hydropower unit according to an embodiment of this application.
[0076] like Figure 3 As shown, the automatic power generation control device 10 for the dual-adjustment hydropower unit includes: an acquisition module 100, a judgment module 200, and a control module 300.
[0077] Specifically, the acquisition module 100 is used to acquire the current power generation parameters of the target hydropower unit.
[0078] The judgment module 200 is used to obtain the current automatic power generation control mode of the target hydropower unit and determine whether the target hydropower unit meets the preset automatic power generation control conditions.
[0079] The control module 300 is used to match the corresponding unit adjustment parameters based on the current power generation parameters when the target hydropower unit meets the preset automatic power generation control conditions, and to calculate the active power under the control of the unit adjustment parameters, and to adjust the unit adjustment parameters based on the active power until the power generation under the current automatic power generation control mode meets the preset effective conditions.
[0080] Optionally, in one embodiment of this application, the control module 300 includes a first calculation unit and a first matching unit.
[0081] The first calculation unit is used to select the effective units for active power allocation based on the preset unit commissioning sequence table when the current automatic power generation control mode is the preset whole plant mode, and to perform active power allocation calculation to obtain the active power allocation value of each effective unit.
[0082] The first matching unit is used to determine whether the active power allocation value of each effective unit is in the unit vibration zone. If there is no effective unit in the unit vibration zone, the unit adjustment parameters are matched based on the current power generation parameters of the effective units.
[0083] Optionally, in one embodiment of this application, the control module 300 further includes a first adjustment unit.
[0084] The first adjustment unit is used to increase the number of effective units based on a preset unit commissioning sequence table when at least one effective unit is in the unit vibration zone.
[0085] Optionally, in one embodiment of this application, the control module 300 includes a second matching unit.
[0086] The second matching unit is used to match the unit adjustment parameters by combining the current power generation parameters and the preset active power increase / decrease pulse parameter interpolation table in the preset single-unit mode when the current automatic power generation control mode is the preset single-unit mode.
[0087] Optionally, in one embodiment of this application, the control module 300 includes a second calculation unit and a judgment unit.
[0088] The second calculation unit is used to calculate the deviation between the actual action quantity corresponding to the active power and the target setpoint of the target unit under automatic generation control.
[0089] The judgment unit is used to determine whether the power generation meets the preset effective conditions based on the deviation and the preset active power control dead zone.
[0090] Optionally, in one embodiment of this application, the control module 300 further includes a second adjustment unit and a third adjustment unit.
[0091] The second regulating unit is used to adjust the blade opening of the target unit based on the unit's regulating parameters.
[0092] The third adjustment unit is used to adjust the corresponding guide vane opening based on the blade opening and the preset coordination curve.
[0093] It should be noted that the foregoing explanation of the embodiment of the automatic power generation control method for dual-adjustment hydropower units also applies to the automatic power generation control device for dual-adjustment hydropower units in this embodiment, and will not be repeated here.
[0094] The dual-regulation hydropower unit automatic power generation control device proposed in this application can match the unit's regulation parameters according to the actual operating dynamics of the target hydropower unit and whether automatic power generation control is performed, thereby increasing the adaptability of the regulation parameters. The matched parameters ensure regulation performance, and closed-loop optimization further suppresses unstable factors, thus ensuring excellent and stable regulation performance under various operating conditions and meeting the required specifications. This solves the technical problem in related technologies where the adaptability of the regulation parameters in dual-regulation hydropower unit automatic power generation control is poor, and the unit's regulation performance and safety stability are affected to varying degrees during single-parameter adjustment, making it difficult to meet the required regulation performance indicators.
[0095] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device may include: The memory 401, the processor 402, and the computer program stored on the memory 401 and capable of running on the processor 402.
[0096] When the processor 402 executes the program, it implements the automatic power generation control method for dual-adjustment hydropower units provided in the above embodiments.
[0097] Furthermore, electronic devices also include: Communication interface 403 is used for communication between memory 401 and processor 402.
[0098] The memory 401 is used to store computer programs that can run on the processor 402.
[0099] Memory 401 may include high-speed RAM memory, and may also include non-volatile memory, such as at least one disk storage device.
[0100] If the memory 401, processor 402, and communication interface 403 are implemented independently, then the communication interface 403, memory 401, and processor 402 can be interconnected via a bus to complete communication between them. The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of representation, Figure 4 The bus is represented by a single thick line, but this does not mean that there is only one bus or one type of bus.
[0101] Optionally, in a specific implementation, if the memory 401, processor 402, and communication interface 403 are integrated on a single chip, then the memory 401, processor 402, and communication interface 403 can communicate with each other through an internal interface.
[0102] Processor 402 may be a central processing unit (CPU), an application specific integrated circuit (ASIC), or one or more integrated circuits configured to implement the embodiments of this application.
[0103] This embodiment also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the above-described automatic power generation control method for dual-regulation hydropower units.
[0104] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the automatic power generation control method for dual-adjustment hydropower units provided in this embodiment of the invention.
[0105] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.
[0106] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "N" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0107] Any process or method described in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or N executable instructions for implementing custom logic functions or processes, and the scope of the preferred embodiments of this application includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as should be understood by those skilled in the art to which embodiments of this application pertain.
[0108] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as a sequenced list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by, or in conjunction with, an instruction execution system, apparatus, or device (such as a computer-based system, a processor-included system, or other system that can fetch and execute instructions from, an instruction execution system, apparatus, or device). For the purposes of this specification, "computer-readable medium" can be any means that can contain, store, communicate, propagate, or transmit programs for use by, or in conjunction with, an instruction execution system, apparatus, or device. More specific examples (a non-exhaustive list) of computer-readable media include: an electrical connection having one or more wires (electronic device), a portable computer disk drive (magnetic device), random access memory (RAM), read-only memory (ROM), erasable and editable read-only memory (EPROM or flash memory), fiber optic devices, and portable optical disc read-only memory (CDROM). Alternatively, the computer-readable medium may be paper or other suitable media on which the program can be printed, since the program can be obtained electronically by optically scanning the paper or other medium, followed by editing, interpreting, or otherwise processing as necessary, and then stored in a computer memory.
[0109] It should be understood that the various parts of this application can be implemented using hardware, software, firmware, or a combination thereof. In the above embodiments, the N steps or methods can be implemented using software or firmware stored in memory and executed by a suitable instruction execution system. For example, if implemented in hardware as in another embodiment, it can be implemented using any one or a combination of the following techniques known in the art: discrete logic circuits having logic gates for implementing logical functions on data signals, application-specific integrated circuits (ASICs) having suitable combinational logic gates, programmable gate arrays (PGAs), field-programmable gate arrays (FPGAs), etc.
[0110] Those skilled in the art will understand that all or part of the steps of the methods in the above embodiments can be implemented by a program instructing related hardware. The program can be stored in a computer-readable storage medium, and when executed, the program includes one or a combination of the steps of the method embodiments.
[0111] Furthermore, the functional units in the various embodiments of this application can be integrated into a processing module, or each unit can exist physically separately, or two or more units can be integrated into a module. The integrated module can be implemented in hardware or as a software functional module. If the integrated module is implemented as a software functional module and sold or used as an independent product, it can also be stored in a computer-readable storage medium.
[0112] The storage medium mentioned above can be a read-only memory, a disk, or an optical disk, etc. Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of this application.
Claims
1. An automatic power generation control method for a dual-regulation hydropower unit, characterized in that, Includes the following steps: Obtain the current power generation parameters of the target hydropower unit; Obtain the current automatic power generation control mode of the target hydropower unit and determine whether the target hydropower unit meets the preset automatic power generation control conditions; When the target hydropower unit meets the preset automatic power generation control conditions, the corresponding unit adjustment parameters are matched based on the current power generation parameters, and the active power under the control of the unit adjustment parameters is calculated. The unit adjustment parameters are then adjusted based on the active power until the power generation under the current automatic power generation control mode meets the preset effective conditions.
2. The method according to claim 1, characterized in that, The matching of corresponding unit regulation parameters based on the current power generation parameters includes: When the current automatic power generation control mode is the preset whole plant mode, based on the preset unit commissioning sequence table, the effective units for active power allocation are selected, and active power allocation calculation is performed to obtain the active power allocation value for each effective unit. Determine whether the active power allocation value of each effective unit is within the unit vibration zone. If there is no effective unit within the unit vibration zone, then match the unit adjustment parameters based on the current power generation parameters of the effective unit.
3. The method according to claim 2, characterized in that, After determining whether the active power distribution value of each effective unit is within the unit vibration zone, the process also includes: If at least one effective unit is in the unit vibration zone, then based on the preset unit commissioning sequence list, the corresponding number of effective units are added.
4. The method according to claim 1, characterized in that, The matching of corresponding unit regulation parameters based on the current power generation parameters includes: When the current automatic power generation control mode is the preset single-unit mode, the unit adjustment parameters are matched by combining the current power generation parameters and the preset active power increase / decrease pulse parameter interpolation table in the preset single-unit mode.
5. The method according to claim 1, characterized in that, The step of adjusting the unit's regulation parameters based on the active power until the power generation under the current automatic power generation control mode meets preset valid conditions includes: Calculate the deviation between the actual action quantity corresponding to the active power and the target setpoint of the target unit under the automatic power generation control action; Based on the deviation and the preset active power control dead zone, it is determined whether the power generation meets the preset effective conditions.
6. The method according to claim 1, characterized in that, After matching the corresponding unit regulation parameters based on the current power generation parameters, the process also includes: Adjust the blade opening of the target unit based on the unit's adjustment parameters; Adjust the corresponding guide vane opening based on the blade opening and the preset coordination curve.
7. An automatic power generation control device for a dual-regulation hydropower unit, characterized in that, include: The acquisition module is used to acquire the current power generation parameters of the target hydropower unit; The judgment module is used to obtain the current automatic power generation control mode of the target hydropower unit and determine whether the target hydropower unit meets the preset automatic power generation control conditions. The control module is used to match the corresponding unit adjustment parameters based on the current power generation parameters when the target hydropower unit meets the preset automatic power generation control conditions, and to calculate the active power under the control of the unit adjustment parameters, and to adjust the unit adjustment parameters based on the active power until the power generation under the current automatic power generation control mode meets the preset effective conditions.
8. An electronic device, characterized in that, include: The system includes a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the automatic power generation control method for a dual-regulating hydropower unit as described in any one of claims 1-6.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that, The program is executed by the processor to implement the automatic power generation control method for dual-regulator hydropower units as described in any one of claims 1-6.
10. A computer program product, comprising a computer program, characterized in that, When the computer program is executed, it is used to implement the automatic power generation control method for dual-regulation hydropower units as described in any one of claims 1-6.