A nuclear power unit output optimization method, system, storage medium and electronic device
By optimizing the output of nuclear power units and establishing a system that automatically adjusts the generator power setting, the problems of operator load and psychological stress caused by seawater temperature changes have been solved, thereby improving the safety and power generation efficiency of nuclear power plants.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHINA NUCLEAR POWER DESIGN COMPANY
- Filing Date
- 2022-08-23
- Publication Date
- 2026-06-05
Smart Images
Figure CN115392688B_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of industrial production control technology, and in particular to a method, system, storage medium, and electronic equipment for optimizing the output of nuclear power units. Background Technology
[0002] Currently, most domestic nuclear power plants use seawater as their cold source, and the temperature of this cold source varies throughout the day, generally exhibiting a pattern of higher temperatures during the day and lower temperatures at night. According to the second law of thermodynamics, thermoelectric conversion efficiency increases when the cold source temperature decreases and decreases when the cold source temperature increases. Because nuclear power plants employ automatic power setting control, when seawater temperatures drop at night, the control system will reduce reactor power to maintain a constant power output. At this time, the reactor power is below the target value, but there is still room for improvement. In this situation, the nuclear power plant operator, considering economic efficiency, manually and gradually increases the power setting until the reactor power reaches the target value. When seawater temperatures rise during the day, the operator reverses this process, lowering the power setting to ensure that the reactor power does not exceed the target value.
[0003] To maximize unit output, operators manually adjust the power setting based on daily seawater temperature variations, bringing either the reactor power or the turbine generator power close to maximum output. However, manual adjustment presents several problems. Constant monitoring of seawater temperature is crucial: if the power setting isn't adjusted promptly when seawater temperature decreases, the actual reactor power will fall below the target, resulting in lower power generation; conversely, if the power setting isn't adjusted promptly when seawater temperature increases, the reactor power will exceed the target, posing a safety risk. Because seawater temperature fluctuates throughout the day, especially near the upper limit, manual adjustments significantly increase operator workload and psychological stress, and operators are perceived as lacking timeliness and accuracy, thus increasing safety risks at the nuclear power plant. Summary of the Invention
[0004] The technical problem to be solved by the present invention is to address at least one defect of the related technologies mentioned in the background: due to the continuous changes in seawater temperature throughout the day, especially when it is close to the upper limit, manual adjustment will greatly increase the workload and psychological pressure of operators, and the timeliness and accuracy of the adjustment are not high, which increases the safety risks of nuclear power plants. The present invention provides a method, system, storage medium and electronic equipment for optimizing the output of nuclear power units.
[0005] The technical solution adopted by this invention to solve its technical problem is: to construct a method for optimizing the output of a nuclear power unit, comprising the following steps:
[0006] S10: Obtain parameter sets, including generator rated power, main pump power, preset reactor power target value, and periodically measured generator power and reactor power.
[0007] S20: Calculate and process the parameter set to obtain the automatically set generator power setting value;
[0008] S30: Output the automatically set generator power setting value to the turbine control system.
[0009] Preferably, in the nuclear power unit output optimization method of the present invention, step S20 includes:
[0010] S201: Calculate and process the main pump power, the target value of the reactor power, the measured power of the generator, and the measured power of the reactor to obtain the initial generator power setting value;
[0011] S202: Compare the initial generator power setting value with the generator power rating value, and use the smaller value as the automatically set generator power setting value.
[0012] Preferably, in the nuclear power unit output optimization method of the present invention, the calculation formula for step S20 is as follows:
[0013] P′ g，target =P c，target *P g / (P RCP +P c );
[0014] P g，target =min{P′ g，target P g，n};
[0015] Among them, P′ g，target P is the initial generator power setting value. c，target P is the target value for reactor power. g P represents the measured power of the generator. RCP Main pump power, P c P represents the measured power of the reactor. g，target P is the automatically set generator power setting value. g，n This refers to the rated electrical power of the generator.
[0016] Preferably, in the nuclear power unit output optimization method of the present invention, the target value of reactor power is equal to the difference between the rated power of the reactor and the safety margin.
[0017] Preferably, in the nuclear power unit output optimization method of the present invention, the safety margin is a preset multiple of the daily fluctuation amplitude of reactor power caused by daily changes in seawater temperature.
[0018] Preferably, in the nuclear power unit output optimization method of the present invention, step S20 further includes:
[0019] S21: Detect and determine whether the steam from the nuclear reactor is used to drive equipment other than the steam turbine. If yes, proceed to S40; otherwise, proceed to S30.
[0020] S40: Switch to manual mode and output the manually set electrical power setting value to the turbine control system.
[0021] This invention also constructs a nuclear power unit output optimization system, comprising:
[0022] The acquisition module is used to acquire parameter sets, including the generator's rated power, main pump power, preset reactor power target value, and periodically measured generator power and reactor power.
[0023] The calculation module performs calculations on the parameter set to obtain the automatically set generator power setting value;
[0024] The first output module is used to output the automatically set generator power setting value to the turbine control system.
[0025] Preferably, in the nuclear power unit output optimization system of the present invention, the calculation module includes:
[0026] The calculation unit is used to calculate and process the main pump power, the target value of the reactor power, the measured power of the generator, and the measured power of the reactor to obtain the initial generator power setting value;
[0027] The comparison unit is used to compare the initial generator power setting value with the generator power rating value, and use the smaller value as the automatically set generator power setting value.
[0028] Preferably, in the nuclear power unit output optimization system of the present invention, the calculation formula of the calculation module is as follows:
[0029] P′ g，target =P c，target *P g / (P RCP +P c );
[0030] P g，target =min{P′ g，target P g，n};
[0031] Among them, P′ g，target P is the initial generator power setting value. c，target P is the target value for reactor power. g P represents the measured power of the generator. RCP Main pump power, P c P represents the measured power of the reactor. g，target P is the automatically set generator power setting value. g，n This refers to the rated electrical power of the generator.
[0032] Preferably, in the nuclear power unit output optimization system of the present invention, the target value of the reactor power is equal to the difference between the rated power of the reactor and the safety margin.
[0033] Preferably, in the nuclear power unit output optimization system of the present invention, the safety margin is a preset multiple of the daily fluctuation amplitude of reactor power caused by daily changes in seawater temperature.
[0034] Preferably, in the nuclear power unit output optimization system of the present invention, the system further includes:
[0035] The detection and judgment module is used to detect and determine whether the steam from the nuclear reactor is used to drive equipment other than the steam turbine. If yes, the second output module is executed; if no, the first output module is executed.
[0036] The second output module is used to switch to manual mode and output the manually set electric power setting value to the turbine control system.
[0037] The present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the nuclear power unit output optimization method as described in any of the preceding claims.
[0038] The present invention also constructs an electronic device comprising:
[0039] One or more processors;
[0040] A storage device for storing one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the nuclear power unit output optimization method as described in any of the preceding claims.
[0041] By implementing this invention, the following beneficial effects are achieved:
[0042] This invention can automatically adjust and set the generator power setting value by calculating and processing the acquired parameter set, thereby reducing the operator's workload and psychological pressure, increasing power generation, and improving the safety of power plant operation. Attached Figure Description
[0043] The present invention will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:
[0044] Figure 1 This is a flowchart of the nuclear power unit output optimization method of the present invention;
[0045] Figure 2 This is a block diagram of the nuclear power unit output optimization system of the present invention. Detailed Implementation
[0046] To provide a clearer understanding of the technical features, objectives, and effects of the present invention, specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
[0047] It should be noted that the flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily have to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.
[0048] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different network and / or processor devices and / or microcontroller devices.
[0049] The upper limit of a nuclear power plant's generating capacity is also constrained by the maximum output of its turbine generator units. In winter, due to low seawater temperatures and high thermoelectric conversion efficiency, the reactor power may not reach its rated power when the turbine generator units reach maximum output. In this case, the maximum output of the turbine generator units is chosen as the control upper limit. Therefore, if... Figure 1 As shown, this invention designs a method for optimizing the output of a nuclear power unit, comprising the following steps:
[0050] S10: Obtain parameter sets, including generator rated power, main pump power, preset reactor power target value, and periodically measured generator power and reactor power.
[0051] S20: Perform calculations on the parameter set to obtain the automatically set generator power setting value;
[0052] S30: Outputs the automatically set generator power setting value to the turbine control system.
[0053] In some embodiments, step S20 includes:
[0054] S201: Calculate and process the main pump power, reactor power target value, generator measured power and reactor measured power to obtain the initial generator power setting value;
[0055] S202: Compare the initial generator power setting value with the generator power rating value, and use the smaller value as the generator power setting value set automatically.
[0056] Specifically, the calculation formula for step S20 is as follows:
[0057] P′ g，target =P c，target *P g / (P RCP +P c );
[0058] P g，target =min{P′ g，target P g，n};
[0059] Among them, P′ g，target P is the initial generator power setting value. c，target P is the target value for reactor power. g P represents the measured power of the generator. RCP Main pump power, P c P represents the measured power of the reactor. g，target P is the automatically set generator power setting value. g，n This refers to the rated electrical power of the generator.
[0060] Because changes in seawater temperature will ultimately lead to changes in reactor power and generator power, by establishing a relationship between the electrical power setting value and the reactor and generator power, the electrical power setting value can be made to change in accordance with changes in seawater temperature. In addition, when the thermoelectric conversion efficiency is relatively high, and the turbine generator set reaches its maximum output first while the reactor power has not reached its maximum value, the generator electrical power setting value is the generator electrical power rating value.
[0061] In some embodiments, for nuclear safety reasons, nuclear power plant operating specifications require that the actual reactor power not exceed the reactor's rated power. In actual operation, to avoid over-power issues, a safety margin is maintained. The aforementioned target reactor power value is equal to the difference between the reactor's rated power and the safety margin. For example, for a CPR1000 nuclear power unit, daily seawater temperature changes can cause a 10MW thermal power fluctuation, corresponding to approximately a 3MW electrical power fluctuation. With a reactor rated power of 2895MW and a safety margin of 5MW, the target value is 2890MW. The safety margin is a preset multiple of the daily reactor power fluctuation amplitude caused by daily seawater temperature changes, preferably 0.5 times. Currently, the target value is generally maintained by the operator manually adjusting the electrical power setting value according to the reactor power changes during periods of stable seawater temperature variation, in order to maintain the target reactor power value as much as possible.
[0062] In some embodiments, the measured power of the generator and the measured power of the reactor are measured periodically. The measurement cycle can be determined according to the power plant control requirements. Since the seawater temperature changes slowly, the measurement cycle can be on the order of minutes or hours.
[0063] In some embodiments, step S20 is followed by:
[0064] S21: Detect and determine whether the steam from the nuclear reactor is used to drive equipment other than the steam turbine. If yes, proceed to S40; otherwise, proceed to S30.
[0065] S40: Switch to manual mode and output the manually set electrical power setting value to the turbine control system.
[0066] Since the steam from the nuclear reactor is used to drive other equipment, such as when the waste liquid treatment system needs to treat waste liquid, a certain amount of steam is required. Therefore, there is uncertainty. The system can be switched to manual mode, where the operator inputs the power setting value.
[0067] like Figure 2 As shown, the present invention also discloses a nuclear power unit output optimization system, comprising:
[0068] The acquisition module is used to acquire parameter sets, including the generator's rated power, main pump power, preset reactor power target value, and periodically measured generator power and reactor power.
[0069] The calculation module processes the parameter set to obtain the automatically set generator power setting value;
[0070] The first output module is used to output the automatically set generator power setting value to the turbine control system.
[0071] In some embodiments, the computing module includes:
[0072] The calculation unit is used to calculate and process the main pump power, the target value of the reactor power, the measured power of the generator, and the measured power of the reactor to obtain the initial generator power setting value;
[0073] The comparison unit is used to compare the initial generator power setting value with the generator power rating value, and use the smaller value as the automatically set generator power setting value.
[0074] Specifically, the calculation formula for the calculation module is as follows:
[0075] P′ g，target =P c，target *P g / (P RCP +P c );
[0076] P g，target =min{P′ g，target P g，n};
[0077] Among them, P′ g，target P is the initial generator power setting value. c，target P is the target value for reactor power. g P represents the measured power of the generator. RCP Main pump power, P c P represents the measured power of the reactor. g，target P is the automatically set generator power setting value. g，n This refers to the rated electrical power of the generator.
[0078] Because changes in seawater temperature will ultimately lead to changes in reactor power and generator power, by establishing a relationship between the electrical power setting value and the reactor and generator power, the electrical power setting value can be made to change in accordance with changes in seawater temperature. In addition, when the thermoelectric conversion efficiency is relatively high, and the turbine generator set reaches its maximum output first while the reactor power has not reached its maximum value, the generator electrical power setting value is the generator electrical power rating value.
[0079] In some embodiments, for nuclear safety reasons, nuclear power plant operating specifications require that the actual reactor power not exceed the reactor's rated power. In actual operation, to avoid over-power issues, a safety margin is maintained. The aforementioned target reactor power value is equal to the difference between the reactor's rated power and the safety margin. For example, for a CPR1000 nuclear power unit, daily seawater temperature changes can cause a 10MW thermal power fluctuation, corresponding to approximately a 3MW electrical power fluctuation. With a reactor rated power of 2895MW and a safety margin of 5MW, the target value is 2890MW. The safety margin is a preset multiple of the daily reactor power fluctuation amplitude caused by daily seawater temperature changes, preferably 0.5 times. Currently, the target value is generally maintained by the operator manually adjusting the electrical power setting value according to the reactor power changes during periods of stable seawater temperature variation, in order to maintain the target reactor power value as much as possible.
[0080] In some embodiments, the measured power of the generator and the measured power of the reactor are measured periodically. The measurement cycle can be determined according to the power plant control requirements. Since the seawater temperature changes slowly, the measurement cycle can be on the order of minutes or hours.
[0081] In some embodiments, the system further includes:
[0082] The detection and judgment module is used to detect and determine whether the steam from the nuclear reactor is used to drive equipment other than the steam turbine. If yes, the second output module is executed; if no, the first output module is executed.
[0083] The second output module is used to switch to manual mode and output the manually set electric power setting value to the turbine control system.
[0084] Since the steam from the nuclear reactor is used to drive other equipment, such as when the waste liquid treatment system needs to treat waste liquid, a certain amount of steam is required. Therefore, there is uncertainty. The system can be switched to manual mode, where the operator inputs the power setting value.
[0085] The present invention also discloses a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the nuclear power unit output optimization method as described in any of the above embodiments.
[0086] The present invention also discloses an electronic device, comprising:
[0087] One or more processors;
[0088] A storage device for storing one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the nuclear power unit output optimization method as described in any of the above embodiments.
[0089] By implementing this invention, the following beneficial effects are achieved:
[0090] This invention can automatically adjust and set the generator power setting value by calculating and processing the acquired parameter set, thereby reducing the operator's workload and psychological pressure, increasing power generation, and improving the safety of power plant operation.
[0091] It is understood that the above embodiments only illustrate preferred embodiments of the present invention, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the present invention. It should be noted that for those skilled in the art, the above embodiments or technical features can be freely combined, and several modifications and improvements can be made without departing from the concept of the present invention. These all fall within the protection scope of the present invention. That is, the embodiments described "in some embodiments" can be freely combined with any of the embodiments above and below. Therefore, all equivalent transformations and modifications made within the scope of the claims of the present invention should fall within the scope of the claims of the present invention.
Claims
1. A method for optimizing the output of a nuclear power unit, characterized in that, Includes the following steps: S10: Obtain parameter sets, including generator rated power, main pump power, preset reactor power target value, and periodically measured generator power and reactor power. S20: Calculate and process the parameter set to obtain the automatically set generator power setting value; S30: Output the automatically set generator power setting value to the turbine control system; Step S20 includes: S201: Calculate and process the main pump power, the target value of the reactor power, the measured power of the generator, and the measured power of the reactor to obtain the initial generator power setting value; S202: Compare the initial generator power setting value with the generator power rated value, and use the smaller value as the automatically set generator power setting value; The calculation formula for step S20 is as follows: ； ； in, This is the initial generator power setting value. This is the target value for reactor power. This represents the actual measured power of the generator. Main pump power, This represents the measured power of the reactor. The generator power setting value is set automatically. This refers to the rated electrical power of the generator.
2. The nuclear power unit output optimization method according to claim 1, characterized in that, The target reactor power value is equal to the difference between the reactor's rated power and the safety margin.
3. The nuclear power unit output optimization method according to claim 2, characterized in that, The safety margin is a preset multiple of the daily fluctuation amplitude of reactor power caused by daily changes in seawater temperature.
4. The nuclear power unit output optimization method according to claim 1, characterized in that, Step S20 is followed by: S21: Detect and determine whether the steam from the nuclear reactor is used to drive equipment other than the steam turbine. If yes, proceed to S40; otherwise, proceed to S30. S40: Switch to manual mode and output the manually set electrical power setting value to the turbine control system.
5. A nuclear power unit output optimization system, characterized in that, include: The acquisition module is used to acquire parameter sets, including the generator's rated power, main pump power, preset reactor power target value, and periodically measured generator power and reactor power. The calculation module performs calculations on the parameter set to obtain the automatically set generator power setting value; The first output module is used to output the automatically set generator power setting value to the turbine control system. The calculation module includes: The calculation unit is used to calculate and process the main pump power, the target value of the reactor power, the measured power of the generator, and the measured power of the reactor to obtain the initial generator power setting value; The comparison unit is used to compare the initial generator power setting value with the generator power rated value, and use the smaller value as the automatically set generator power setting value. The calculation formula of the calculation module is: ； ； in, This is the initial generator power setting value. This is the target value for reactor power. This represents the actual measured power of the generator. Main pump power, This represents the measured power of the reactor. The generator power setting value is set automatically. This refers to the rated electrical power of the generator.
6. The nuclear power unit output optimization system according to claim 5, characterized in that, The target reactor power value is equal to the difference between the reactor's rated power and the safety margin.
7. The nuclear power unit output optimization system according to claim 6, characterized in that, The safety margin is a preset multiple of the daily fluctuation amplitude of reactor power caused by daily changes in seawater temperature.
8. The nuclear power unit output optimization system according to claim 5, characterized in that, This system also includes: The detection and judgment module is used to detect and determine whether the steam from the nuclear reactor is used to drive equipment other than the steam turbine. If yes, the second output module is executed; if no, the first output module is executed. The second output module is used to switch to manual mode and output the manually set electric power setting value to the turbine control system.
9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the nuclear power unit output optimization method as described in any one of claims 1-4.
10. An electronic device, characterized in that, include: One or more processors; A storage device for storing one or more programs, which, when executed by one or more processors, cause the one or more processors to implement the nuclear power unit output optimization method as described in any one of claims 1-4.