Regulator heat dissipation compensation method, system, device and computer readable storage medium

Abstract

The application provides a voltage stabilizer heat dissipation compensation method, system, device and computer readable storage medium. The voltage stabilizer heat dissipation compensation method is applied to integrated reactor overall performance test. The voltage stabilizer heat dissipation compensation method comprises the following steps: providing an integrated reactor overall performance test platform, and establishing a steady state working condition on the integrated reactor overall performance test platform. Liquid level data of a voltage stabilizer at least two different liquid levels and compensation power data of an electric heater corresponding to each liquid level data are collected. According to the liquid level data and the corresponding compensation power data, a mapping relationship between the liquid level and the compensation power is established. In the transient process of the overall performance test, a real-time liquid level signal of the voltage stabilizer is obtained. According to the mapping relationship and the real-time liquid level signal of the voltage stabilizer, the output power of the electric heater is adjusted to compensate for the wall heat dissipation loss of the voltage stabilizer.

Description

Technical Field

[0001] This invention relates to the overall performance testing of integrated reactors, and more particularly to a method, system, device, and computer-readable storage medium for heat dissipation compensation of a pressurizer. Background Technology

[0002] In the field of integrated reactor performance testing, the pressurizer, as a key device for maintaining system pressure stability, experiences continuous heat loss to the external environment through its walls during testing. To maintain system pressure stability, it is typically necessary to supplement the system with heat through an internal electric heater to offset this heat loss.

[0003] In existing technologies, heat dissipation compensation is typically achieved by setting the output power of the voltage regulator's electric heater to a fixed value. However, during the transient process of overall performance testing, the working fluid level inside the voltage regulator changes dynamically with the operating conditions, and the heat loss from the wall also changes accordingly. The constant compensation power cannot match the actual changing heat dissipation, resulting in compensation deviations and affecting the accuracy of the overall performance test data. Summary of the Invention

[0004] The purpose of this invention is to provide a method, system, device, and computer-readable storage medium for heat dissipation compensation of a voltage regulator, so as to achieve accurate dynamic compensation for heat dissipation loss of the voltage regulator wall during the transient process of overall performance testing, and improve the accuracy of test data.

[0005] One aspect of the present invention provides a pressurizer heat dissipation compensation method applied to integrated reactor overall performance testing; the pressurizer heat dissipation compensation method includes: providing an integrated reactor overall performance testing platform, establishing steady-state operating conditions on the integrated reactor overall performance testing platform; obtaining the mapping relationship between the pressurizer liquid level and the compensation power of the electric heater of the integrated reactor overall performance testing platform under steady-state operating conditions; obtaining the real-time liquid level signal of the pressurizer during the transient process of the overall performance test; and adjusting the output power of the electric heater according to the mapping relationship and the real-time liquid level signal of the pressurizer to compensate for the heat dissipation loss of the pressurizer wall.

[0006] In some embodiments, obtaining the mapping relationship between the pressurizer liquid level and the compensation power of the electric heater of the integrated reactor overall performance test platform under steady-state conditions includes: obtaining liquid level data of the pressurizer at at least two different liquid levels and compensation power data of the electric heater corresponding to each liquid level data; and establishing a mapping relationship between liquid level and compensation power based on the liquid level data and the corresponding compensation power data.

[0007] In one embodiment, establishing the mapping relationship between liquid level and compensation power based on the liquid level data and the corresponding compensation power data includes: performing fitting processing on the corresponding data of liquid level and compensation power based on the corresponding data of liquid level and compensation power; and establishing a functional relationship between compensation power P and liquid level L, P=f(L).

[0008] In one embodiment, adjusting the output power of the electric heater according to the mapping relationship and the real-time liquid level signal of the voltage regulator to compensate for the heat loss of the voltage regulator wall includes: obtaining the compensation power corresponding to the real-time liquid level signal according to the mapping relationship, as the target power of the electric heater; and adjusting the output power of the electric heater to the target power to compensate for the heat loss of the voltage regulator wall.

[0009] In one embodiment, the voltage regulator heat dissipation compensation method further includes: acquiring fluid temperature data and voltage regulator wall temperature data corresponding to each of the liquid level data; the step of establishing a mapping relationship between liquid level and compensation power based on the liquid level data and the corresponding compensation power data is: establishing a mapping relationship between compensation power, liquid level, fluid temperature and wall temperature based on the liquid level data, the corresponding compensation power data, the fluid temperature data and the wall temperature data.

[0010] In one embodiment, the mapping relationship is established by table lookup or interpolation.

[0011] Another aspect of the present invention provides a pressurizer heat dissipation compensation system for use in integrated reactor overall performance testing; the pressurizer heat dissipation compensation system includes: a liquid level sensor for acquiring real-time liquid level signals of the pressurizer; a control device connected to the liquid level sensor, storing the mapping relationship as described in any of the above embodiments of the pressurizer heat dissipation compensation method, for obtaining the corresponding target compensation power according to the real-time liquid level signal of the pressurizer and outputting a power adjustment command; and an electric heater connected to the control device, which outputs corresponding power in response to the power adjustment command to compensate for heat loss of the pressurizer.

[0012] In one embodiment, a heat tracing device is also included; the heat tracing device is installed on the outer wall of the voltage regulator.

[0013] In one embodiment, the heat tracing device is an electric heat tracing cable or a steam heat tracing cable; and / or the heat tracing device is fixed to the upper or middle part of the outer wall of the voltage stabilizer.

[0014] Another aspect of the present invention provides a voltage regulator heat dissipation compensation device, comprising: a memory; and a processor connected to the memory and configured to implement the voltage regulator heat dissipation compensation method as described in any of the above embodiments.

[0015] Another aspect of the present invention provides a computer-readable storage medium storing computer instructions, which, when executed by a processor, implement the voltage regulator heat dissipation compensation method as described in any of the above embodiments.

[0016] The voltage regulator heat dissipation compensation method of this invention establishes a quantitative mapping relationship between liquid level and heat dissipation loss by collecting the compensation power of the electric heater corresponding to different liquid levels under steady-state conditions. The liquid level, a state quantity that can be acquired in real time, is used as a proxy parameter for heat dissipation, solving the problem that heat dissipation cannot be directly measured in real time during transient processes. During the transient process of the overall performance test, the output power of the electric heater is dynamically adjusted according to the real-time liquid level signal L(t) and the mapping relationship, ensuring that the compensation power accurately matches the actual heat dissipation loss at every moment. This eliminates the systematic power deviation caused by liquid level changes under constant power compensation, and avoids interference from system pressure deviation on core parameters such as the primary coolant saturation temperature, flow driving force, and natural circulation flow rate. This ensures accurate simulation of the thermal boundary conditions in the overall performance test and improves the reliability of the test data. Attached Figure Description

[0017] The above and other features, properties and advantages of the present invention will become more apparent from the following description taken in conjunction with the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic flowchart of an embodiment of the voltage regulator heat dissipation compensation method according to the present invention; Figure 2 This is a schematic diagram of the overall performance testing platform structure. Detailed Implementation

[0018] Small integrated natural circulation (SUR) reactors employ natural circulation as their steady-state operating mode, with key components such as the primary loop system and pressurizer highly integrated within the reactor pressure vessel. To verify the thermal-hydraulic performance, natural circulation capability, and transient response characteristics of this type of reactor, systematic experimental studies are typically conducted on a scaled-down or full-scale integrated performance test platform. This platform simulates the geometry, working fluid parameters, and boundary conditions of the reactor's primary loop system, replicating the reactor's thermal behavior under normal operation and typical transient conditions, providing experimental data for reactor design verification and safety analysis.

[0019] In the aforementioned overall performance tests, accurate simulation of thermal boundary conditions is a prerequisite for obtaining reliable test data. As the core device for maintaining stable pressure in the primary loop system, the voltage regulator experiences a significantly higher metal wall temperature than the ambient temperature during test platform operation, resulting in substantial heat loss. If this heat loss is not compensated, it will disrupt the system's thermal balance, causing the system pressure to deviate from the predetermined operating conditions, thereby distorting the test thermal boundary conditions and affecting the validity and accuracy of the overall performance test data.

[0020] To eliminate the impact of the aforementioned heat loss, existing technologies typically utilize an electric heater integrated within the voltage regulator to supplement the system with heat, compensating for heat loss from the walls and maintaining stable system pressure. In practice, operators, based on experience or a preliminary rough estimate, set the output power of the electric heater to a fixed value and keep it constant during the test.

[0021] However, the aforementioned constant power compensation method has inherent technical limitations. First, the actual heat dissipation of the voltage regulator wall is not a constant value, but varies with the level of the working fluid inside the voltage regulator—the higher the level, the greater the mass of the working fluid in contact with the wall, and the corresponding changes in the wetted area and heat capacity of the wall, thus altering the heat dissipation characteristics. Second, during the transient process of the overall performance test, the system operating conditions continuously change, and the voltage regulator level fluctuates in real time with the dynamic changes in operating parameters. Simultaneously, the heat dissipation loss from the wall also changes accordingly, and a constant compensation power cannot respond to this. Third, if the compensation power is set too low, the heat dissipation loss will not be adequately compensated, resulting in a pressure drop; if the setting is too high, it is equivalent to injecting excess heat into the system, also causing pressure deviation. These deviations cannot be eliminated by static settings under transient conditions, leading to systematic distortion of the overall performance test data and significantly limiting the accuracy and reliability of the test results.

[0022] Reference will now be made in detail to embodiments of the invention, one or more examples of which are illustrated in the accompanying drawings. Each example is provided to explain the invention and not to limit it. In fact, it will be apparent to those skilled in the art that various modifications and variations may be made to the invention without departing from the scope or spirit thereof. For example, a feature shown or described as part of one embodiment may be used with another embodiment to produce yet another embodiment. Therefore, the invention is intended to cover these modifications and variations that fall within the scope of the appended claims and their equivalents.

[0023] This invention provides a voltage regulator heat dissipation compensation method, which is applied to the overall performance test of an integrated reactor.

[0024] Figure 1 The following is a detailed flowchart of an embodiment of the voltage regulator heat dissipation compensation method of the present invention. Figure 1 In the illustrated embodiment, the voltage regulator heat dissipation compensation method of the present invention includes steps S10 to S40: In step S10, an integrated reactor overall performance test platform is provided, and steady-state operating conditions are established on the integrated reactor overall performance test platform.

[0025] Figure 2The structure of the overall performance test platform described in the voltage regulator heat dissipation compensation method of the present invention is shown. The overall performance test platform can be a scaled-down test platform or a full-size test platform.

[0026] like Figure 2 As shown, the overall performance test platform is equipped with a pressure regulator 10, a liquid level sensor 20, an electric heater 30, a heat tracing device 40, a primary and secondary heat exchanger 50, a core 60, a primary loop system (including a primary loop inlet 91 and a primary loop outlet 92), a secondary loop system (including a secondary loop inlet 93 and a secondary loop outlet 94), a control device 70, and a power regulator 80.

[0027] The regulator 10 contains the working fluid and forms an upper gas phase space and a lower liquid phase space to maintain the pressure stability of the primary loop system. The top of the regulator 10 may be equipped with interfaces for instruments such as temperature measuring elements and pressure measuring elements.

[0028] The level sensor 20 is installed inside the pressure regulator 10 to collect the working fluid level in the pressure regulator 10 in real time and transmit the level signal to the control device 70. The level sensor 20 can be a differential pressure level gauge, float level gauge, or other level measurement device suitable for the working conditions of the test platform.

[0029] The electric heater 30 is arranged inside the voltage regulator 10 and adjusts the output power according to the control command output by the power regulator 80 to compensate for the heat loss of the wall of the voltage regulator 10 and maintain the stability of the system pressure.

[0030] In one embodiment, a heat tracing device 40 may be provided. The heat tracing device 40 is installed on the outer wall of the voltage regulator 10 to uniformly heat the outer side of the wall of the voltage regulator 10, thereby reducing the absolute amount of heat loss from the wall. The heat tracing device 40 may be fixed to the upper part and / or the middle part of the outer wall of the voltage regulator 10.

[0031] The primary and secondary heat exchangers 50 are located below the pressurizer 10, within the reactor pressure vessel simulator. The primary loop system is situated inside the reactor pressure vessel simulator. The working fluid, after being heated in the core 60, flows upwards to the primary and secondary heat exchangers 50 for heat exchange, then returns to the core 60, forming a natural circulation loop, simulating the primary loop working fluid flow behavior of the prototype reactor. The primary loop inlet 91 and primary loop outlet 92 are used for the injection and discharge of the primary loop working fluid, respectively. The secondary loop system introduces cooling working fluid into the tube side of the primary and secondary heat exchangers 50 through the secondary loop inlet 93. After absorbing heat transferred from the primary loop, the working fluid is discharged through the secondary loop outlet 94, simulating the secondary loop heat removal process of the prototype reactor.

[0032] Core 60 is used to simulate the heat source of the prototype reactor.

[0033] The control device 70 serves as the control center of the overall performance test platform, connecting the liquid level sensor 20 and the power regulator 80. The control device 70 stores a pre-established mapping relationship between liquid level and compensation power. Based on the real-time liquid level signal transmitted by the liquid level sensor 20, it determines the target compensation power of the electric heater 30 according to the mapping relationship and outputs corresponding control commands to the power regulator 80.

[0034] The power regulator 80 is connected to the control device 70 and the electric heater 30. According to the control command output by the control device 70, the actual output power of the electric heater 30 is adjusted so that the output power of the electric heater 30 reaches the target compensation power.

[0035] During operation on the test platform, the reactor core 60 simulates the thermal operation of a prototype reactor. The primary loop working fluid forms a natural circulation between the reactor core 60 and the primary and secondary side heat exchangers 50. The secondary loop working fluid removes heat from the primary loop through the primary and secondary side heat exchangers 50, and the pressurizer 10 maintains stable pressure in the primary loop system. During this process, the level sensor 20, control device 70, power regulator 80, electric heater 30, and heat tracing device 40 work together to precisely and dynamically compensate for heat loss from the walls of the pressurizer 10.

[0036] In S10 of the voltage regulator heat dissipation compensation method of the present invention, the steady-state condition is the condition in which the system pressure, primary loop inlet and outlet temperatures, flow rate, and voltage regulator liquid level remain within a preset range and operate stably. Specifically, it refers to the test platform maintaining a stable operating state for a certain period of time for the aforementioned main parameters. Under the steady-state condition, the system thermal balance is established, and the output power of the electric heater is equal to the heat dissipation loss power of the voltage regulator wall, thereby providing a reliable data basis for establishing the mapping relationship between liquid level and compensation power.

[0037] In step S20, the mapping relationship between the pressurizer liquid level and the compensation power of the electric heater of the integrated reactor overall performance test platform under steady-state conditions is obtained.

[0038] Specifically, step S20 includes: collecting liquid level data L of the voltage regulator at at least two different liquid levels and compensation power data P of the electric heater corresponding to each liquid level data L. Based on the liquid level data L and the corresponding compensation power data P, a mapping relationship between liquid level and compensation power is established.

[0039] Based on the steady-state conditions established in step S10, steady-state conditions are established sequentially at at least two different liquid levels by adjusting the operating parameters of the test platform. For each steady-state condition, the corresponding liquid level data L and the electric heater compensation power data P required to maintain system pressure stability are recorded, thus obtaining a set of corresponding data between liquid level and compensation power. The liquid level data L is acquired through a liquid level sensor, and the compensation power data P is read through the power metering device of the electric heater.

[0040] In an optional embodiment of the present invention, at least two different liquid level data points L are collected, covering the normal operating liquid level range of the pressure regulator during the overall performance test. This ensures that the subsequently established mapping relationship has effective data support within the actual liquid level range during the transient process, avoiding extrapolation errors that could lead to inaccurate compensation. Preferably, 5 to 10 different sets of liquid level data are collected in S20, with the liquid level range covering the normal operating liquid level range of the pressure regulator.

[0041] In an optional embodiment of the present invention, the step of establishing the mapping relationship between liquid level and compensation power includes: performing fitting processing on the corresponding data of liquid level data L and compensation power data P collected in step S20, and establishing a functional relationship between compensation power P and liquid level L, P= f(L). For example, linear fitting P=A1×L+A2 can be used, where A1 and A2 are fitting coefficients, or other fitting forms such as polynomials can be used.

[0042] After the fitting process is completed, the procedure may optionally include a step of verifying the accuracy of the functional relationship P=f(L) to confirm that the prediction error of the functional relationship within the experimental liquid level range meets the compensation accuracy requirements before proceeding to the transient compensation stage. Accuracy verification can be achieved by comparing and analyzing the predicted value of the functional relationship with the actual calibration data.

[0043] In step S30, during the transient process of the overall performance test, the real-time liquid level signal L(t) of the pressurizer is acquired. The transient process refers to the operating conditions simulating transient events in the reactor, such as heat sink loss transients or breach transients. During the transient process, parameters such as system pressure, primary loop inlet and outlet temperatures, flow rate, and pressurizer liquid level change over time.

[0044] Once the overall performance test enters the transient process, the liquid level sensor continuously collects the working fluid level in the regulator in real time, outputs a real-time liquid level signal L(t), and transmits it to the control device.

[0045] In step S40, the output power of the electric heater is adjusted according to the mapping relationship and the real-time liquid level signal L(t) of the voltage regulator to compensate for the heat loss from the wall of the voltage regulator.

[0046] In an optional embodiment of the present invention, step S40 specifically includes: substituting the real-time liquid level signal L(t) into the functional relationship P=f(L) according to the mapping relationship established in step S30 to obtain the compensation power corresponding to the real-time liquid level, which is used as the target power of the electric heater; the power regulator can adjust the actual output power of the electric heater according to the control command output by the control device, and adjust the output power of the electric heater to the target power to compensate for the heat dissipation loss of the voltage regulator wall and maintain the stability of the system pressure.

[0047] The heat loss from the voltage regulator wall is determined by the temperature difference between the wall and the ambient temperature, the wall area, and the thermal conductivity. Under steady-state conditions, the system is in thermal equilibrium, and the electric heater compensation power required to maintain stable system pressure is equal to the heat loss from the wall at that liquid level. Therefore, by establishing steady-state conditions at at least two different liquid levels and collecting the corresponding compensation power, the resulting liquid level-compensation power data is essentially a direct measurement of the heat loss from the wall at each liquid level. The mapping relationship established based on this quantitatively correlates the liquid level—a state variable that can be acquired in real-time during transient processes—with the heat loss, thus solving the technical problem of the inability to directly measure heat dissipation in real-time during transient processes.

[0048] During the transient process of the overall performance test, the pressure regulator liquid level continuously changes with the system operating conditions, and the actual heat loss fluctuates dynamically accordingly. Under the constant power compensation method, the compensation power remains fixed, resulting in a systematic deviation between the compensation power and the actual heat loss that does not automatically disappear with changes in operating conditions. This deviation is directly reflected in the continuous shift of the system pressure. This invention substitutes the real-time liquid level signal L(t) into a pre-established mapping relationship to obtain the target compensation power corresponding to that moment, and adjusts the output power of the electric heater to this target value in real time. This ensures that the compensation power matches the actual heat loss at every moment, fundamentally eliminating the aforementioned systematic deviation and maintaining the stability of the system pressure near the predetermined operating conditions.

[0049] The validity of overall performance test data depends on the consistency between the test thermal boundary conditions and the design conditions. System pressure deviations caused by heat dissipation compensation errors will alter the saturation temperature, density, and flow driving force of the primary coolant, thus affecting the measured values ​​of core test parameters such as natural circulation flow rate and heat transfer coefficient, causing the test data to deviate from true physical laws. Eliminating pressure deviations through precise heat dissipation compensation ensures that these parameters are measured under correct thermodynamic boundary conditions, thereby improving the accuracy and reliability of the overall performance test data.

[0050] Based on an optional embodiment of the present invention, the voltage regulator heat dissipation compensation method of the present invention can further introduce fluid temperature and voltage regulator wall temperature as compensation parameters to further improve the compensation accuracy.

[0051] Specifically, based on step S20, the present invention further includes the following steps: while collecting the compensation power data P corresponding to each liquid level data L, acquiring the fluid temperature data and the wall temperature data of the voltage regulator corresponding to each liquid level data L. The fluid temperature data is acquired through a temperature measuring element arranged inside the voltage regulator, and the wall temperature data is acquired through a temperature measuring element attached to the wall of the voltage regulator.

[0052] In this embodiment, step S20 further includes: establishing a multi-dimensional mapping relationship between compensation power, liquid level, fluid temperature, and wall temperature based on the liquid level data, the corresponding compensation power data, the fluid temperature data, and the wall temperature data. Specifically, P = A1 L+A2 T f +A3 T w +A4, where A1, A2, A3, and A4 are coefficients, T f T represents the fluid temperature. w This refers to the wall temperature.

[0053] In an optional embodiment of the present invention, the above-mentioned multidimensional mapping relationship is established and applied by means of table lookup or interpolation. Specifically, the liquid level, fluid temperature, wall temperature and corresponding compensation power data collected during the calibration stage are stored as a multidimensional data table. During the transient compensation stage, the target compensation power is calculated by means of table lookup or interpolation based on the real-time collected liquid level signal L(t), fluid temperature signal and wall temperature signal, and the output power of the electric heater is dynamically adjusted.

[0054] In this embodiment, the present invention introduces fluid temperature and wall temperature as additional control parameters, thereby eliminating the difference in heat dissipation caused by different fluid temperatures at the same liquid level, further improving the accuracy of heat dissipation compensation, and is suitable for scenarios with higher requirements for the accuracy of experimental data.

[0055] This invention provides a pressurizer heat dissipation compensation system, which can be applied to the overall performance testing of an integrated reactor. The pressurizer heat dissipation compensation system includes a liquid level sensor, a control device, and an electric heater.

[0056] Specifically, the level sensor is used to acquire the real-time level signal L(t) of the pressure regulator and transmit the real-time level signal L(t) to the control device. The level sensor can be a differential pressure level gauge, a float level gauge, or other level measurement device suitable for the operating conditions of the test platform.

[0057] The control device is connected to a liquid level sensor and stores a mapping relationship between liquid level and compensation power, pre-acquired or established as described in the voltage regulator heat dissipation compensation method of the aforementioned embodiments. The control device determines the corresponding target compensation power based on the real-time liquid level signal L(t) transmitted by the liquid level sensor and the stored mapping relationship. A power regulator is connected to the control device and the electric heater. The power regulator adjusts the actual output power of the electric heater according to the control commands output by the control device, so that the output power of the electric heater reaches the target compensation power to compensate for the heat dissipation loss of the voltage regulator wall.

[0058] By working together with the liquid level sensor, control device and electric heater, dynamic adjustment of heat dissipation compensation power based on real-time liquid level signal is realized, which improves the simulation accuracy of thermal boundary conditions in the overall performance test.

[0059] Furthermore, the voltage regulator heat dissipation compensation system also includes a heat tracing device installed on the outer wall of the voltage regulator. The heat tracing device uniformly heats the outer side of the voltage regulator wall, reducing the absolute amount of heat loss from the wall surface, thereby lowering the power requirement of the electric heater and reducing the risk of excessively high local heat flux density in the electric heater.

[0060] Optionally, the heat tracing device can be an electric heat tracing cable or a steam heat tracing cable. Electric heat tracing cables are suitable for test platforms with sufficient power supply; steam heat tracing cables are suitable for test platforms with a steam heat source, and the choice can be made flexibly according to the energy supply conditions of the test platform.

[0061] The heat tracing device can be fixed to the upper and / or middle part of the outer wall of the voltage regulator. The upper and middle parts of the voltage regulator wall have a large heat dissipation area. Placing the heat tracing device in this position can focus on compensating for areas with concentrated heat loss, thereby improving the uniformity and effectiveness of heat tracing compensation.

[0062] The heat tracing device works in conjunction with the electric heater. The heat tracing of the foundation reduces the fluctuation of heat dissipation on the wall, and the electric heater provides dynamic compensation.

[0063] The heat tracing device can be fixed to the upper part of the outer wall of the voltage regulator by adhesive or binding, or it can be fixed by spot welding.

[0064] The length of the heat tracing device should preferably cover the main heat dissipation area, and the width should preferably be 20-50 mm.

[0065] In this embodiment, the heat tracing device and the electric heater work together to compensate for the heat dissipation of the voltage regulator, achieving a synergistic effect of external uniform compensation and internal dynamic adjustment, further improving the overall effect of heat dissipation compensation.

[0066] One embodiment of the present invention provides a voltage regulator heat dissipation compensation device, which includes a memory and a processor. The processor is connected to the memory and is configured to implement the voltage regulator heat dissipation compensation method as described in the above embodiment.

[0067] The memory is used to store computer instructions and pre-established mapping data between liquid level and compensation power. The memory can be a non-volatile storage medium such as Random Access Memory (RAM), Read-Only Memory (ROM), or Flash Memory, or a combination thereof.

[0068] The processor is used to read computer instructions from memory and execute them, enabling real-time processing of liquid level signals, calculation of target compensation power, and output of electric heater control instructions. The processor can be a Central Processing Unit (CPU), a Programmable Logic Controller (PLC), a Digital Signal Processor (DSP), or similar.

[0069] When the voltage regulator heat dissipation compensation method of the present invention is implemented as a computer program, it can also be stored as an article of manufacture in a computer-readable storage medium. For example, a computer-readable storage medium may include, but is not limited to, magnetic storage devices (e.g., hard disks, floppy disks, magnetic stripes), optical disks (e.g., compact discs (CDs), digital multifunction discs (DVDs)), smart cards, and flash memory devices (e.g., electrically erasable programmable read-only memory (EPROM), cards, sticks, key drives). Furthermore, the various storage media described herein can represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media (and / or storage media) capable of storing, containing, and / or carrying code and / or instructions and / or data.

[0070] It should be understood that the embodiments described above are merely illustrative. The embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For hardware implementation, the processor may be implemented within one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, and / or other electronic units designed to perform the functions described herein, or combinations thereof.

[0071] Some aspects of this application can be executed entirely by hardware, entirely by software (including firmware, resident software, microcode, etc.), or by a combination of hardware and software. The aforementioned hardware or software may be referred to as a "data block," "module," "engine," "unit," "component," or "system." The processor may be one or more application-specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DAPDs), programmable logic devices (PLDs), field-programmable gate arrays (FPGAs), processors, controllers, microcontrollers, microprocessors, or combinations thereof. Furthermore, aspects of this application may manifest as computer products residing in one or more computer-readable media, including computer-readable program code. For example, computer-readable media may include, but are not limited to, magnetic storage devices (e.g., hard disks, floppy disks, magnetic tapes, etc.), optical discs (e.g., compressed CDs, digital multifunction DVDs, etc.), smart cards, and flash memory devices (e.g., cards, sticks, key drives, etc.).

[0072] A computer-readable medium may contain a propagated data signal containing computer program code, for example, on baseband or as part of a carrier wave. This propagated signal may take various forms, including electromagnetic, optical, and so on, or suitable combinations thereof. A computer-readable medium can be any computer-readable medium other than a computer-readable storage medium, which can be connected to an instruction execution system, apparatus, or device to enable communication, propagation, or transmission of a program for use. The program code located on the computer-readable medium can be propagated through any suitable medium, including radio, cable, fiber optic cable, radio frequency signals, or similar media, or any combination of the above media.

[0073] In related technologies, a constant power compensation method is adopted, that is, the output power of the electric heater is fixed to a constant value estimated based on the heat dissipation under a typical operating condition, and is not adjusted throughout the test.

[0074] Under the aforementioned constant power compensation method, when the overall performance test enters a transient phase and the regulator liquid level changes, the output power of the electric heater cannot be dynamically adjusted accordingly, resulting in a deviation between the actual compensation power and the actual heat dissipation corresponding to the liquid level. When the liquid level rises, the actual heat dissipation increases, the constant compensation power is insufficient, and the system pressure tends to decrease; when the liquid level falls, the actual heat dissipation decreases, the constant compensation power is excessive, and the system pressure tends to increase. These pressure deviations distort the thermal boundary conditions of the test, affecting the accuracy of the overall performance test data.

[0075] In contrast, the voltage regulator heat dissipation compensation method provided in one embodiment of the present invention can track the heat dissipation changes caused by liquid level changes in real time by establishing a mapping relationship between liquid level and compensation power in advance and dynamically adjusting the output power of the electric heater during transient processes, thereby achieving accurate compensation, effectively eliminating the above-mentioned pressure deviation, and ensuring the accuracy of overall performance test data.

[0076] The following detailed description of a specific embodiment of the present invention, in conjunction with the above embodiments, illustrates the following: First, establish steady-state operating conditions on the overall performance test platform to keep the system pressure, temperature, and flow rate stable. Under steady-state conditions, adjust the pressure regulator level to cover the range of 10% to 100% of the liquid level, and collect at least 10 sets of liquid level data L and corresponding electric heater compensation power data P at preset intervals.

[0077] Among them, the compensation power data for each group is the output power of the electric heater required to maintain the thermal balance of the system under the corresponding liquid level conditions.

[0078] Then, a mapping relationship between liquid level and compensation power is established. Based on the collected liquid level data L and compensation power data P, least squares fitting, linear fitting, polynomial fitting, or interpolation calculation methods are used to establish the mapping relationship between liquid level and compensation power.

[0079] Preferably, the following functional relationship is established: P= A1 L+A2

[0080] Where P is the compensation power, L is the voltage regulator liquid level, and A1 and A2 are the coefficients obtained from the fitting.

[0081] The established mapping relationship between liquid level and compensation power is written into the control device. The control device calculates the target compensation power in real time according to the function relationship based on the liquid level signal collected in real time by the liquid level sensor, and outputs a control signal to adjust the output power of the electric heater. Under different liquid level conditions, the electric heater outputs different compensation power according to the corresponding function relationship to compensate for the heat loss of the voltage regulator wall.

[0082] Finally, dynamic compensation was performed during the transient test. During the transient process of the overall performance test, the pressure regulator liquid level fluctuated dynamically with changes in operating conditions. The controller dynamically called the corresponding compensation power based on the real-time liquid level signal to adjust the output power of the electric heater in real time, so as to maintain the thermal balance of the system and reduce the impact of wall heat dissipation on the test results.

[0083] While the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the invention. Any variations and modifications can be made by those skilled in the art without departing from the spirit and scope of the invention. Therefore, any modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of the present invention, without departing from the scope of the invention, fall within the protection scope defined by the claims of the present invention.

Claims

1. A voltage regulator heat dissipation compensation method, applied to the overall performance test of an integrated reactor; Its features are, The voltage regulator heat dissipation compensation method includes: Provide an integrated reactor overall performance test platform to establish steady-state operating conditions on the integrated reactor overall performance test platform; Obtain the mapping relationship between the pressurizer liquid level and the compensation power of the electric heater of the integrated reactor overall performance test platform under steady-state operating conditions; During the transient process of the overall performance test, the real-time liquid level signal of the voltage regulator was acquired; Based on the mapping relationship and the real-time liquid level signal of the voltage regulator, the output power of the electric heater is adjusted to compensate for the heat loss from the wall of the voltage regulator.

2. The voltage regulator heat dissipation compensation method as described in claim 1, characterized in that, Obtain the mapping relationship between the pressurizer liquid level and the compensation power of the electric heater of the integrated reactor overall performance test platform under steady-state operating conditions, including: Acquire liquid level data of the voltage regulator at at least two different liquid levels and compensation power data of the electric heater corresponding to each liquid level data; Based on the liquid level data and the corresponding compensation power data, a mapping relationship between liquid level and compensation power is established.

3. The voltage regulator heat dissipation compensation method as described in claim 2, characterized in that, The step of establishing a mapping relationship between liquid level and compensation power based on the liquid level data and the corresponding compensation power data includes: Based on the corresponding data of liquid level and compensation power, the corresponding data of liquid level and compensation power are fitted. Establish the functional relationship between compensation power P and liquid level L: P=f(L).

4. The voltage regulator heat dissipation compensation method as described in claim 1, characterized in that, The step of adjusting the output power of the electric heater according to the mapping relationship and the real-time liquid level signal of the voltage regulator to compensate for the heat loss from the wall of the voltage regulator includes: Based on the mapping relationship, the compensation power corresponding to the real-time liquid level signal is obtained, which is used as the target power of the electric heater; Adjust the output power of the electric heater to the target power to compensate for heat loss from the wall of the voltage regulator.

5. The voltage regulator heat dissipation compensation method as described in claim 1, characterized in that, The voltage regulator heat dissipation compensation method also includes: Obtain the fluid temperature data and the wall temperature data of the voltage regulator corresponding to each of the liquid level data; The step of establishing a mapping relationship between liquid level and compensation power based on the liquid level data and the corresponding compensation power data is as follows: Based on the liquid level data, the corresponding compensation power data, the fluid temperature data, and the wall temperature data, a mapping relationship is established between the compensation power, liquid level, fluid temperature, and wall temperature.

6. The voltage regulator heat dissipation compensation method as described in claim 5, characterized in that, The mapping relationship is established by looking up a table or by interpolation.

7. A voltage regulator heat dissipation compensation system, applied to the overall performance test of an integrated reactor; Its features are, The voltage regulator heat dissipation compensation system includes: A liquid level sensor is used to acquire the real-time liquid level signal of the pressure regulator; A control device, connected to the liquid level sensor, stores the mapping relationship in the voltage regulator heat dissipation compensation method as described in any one of claims 1-6, and is used to obtain the corresponding target compensation power according to the real-time liquid level signal of the voltage regulator and output a power adjustment command; An electric heater, connected to the control device, outputs corresponding power in response to the power adjustment command to compensate for heat loss from the voltage regulator.

8. The voltage regulator heat dissipation compensation system as described in claim 7, characterized in that, It also includes heat tracing equipment; The heat tracing device is installed on the outer wall of the voltage stabilizer.

9. The voltage regulator heat dissipation compensation system as described in claim 8, characterized in that, The heat tracing device is an electric heat tracing cable or a steam heat tracing cable; and / or The heat tracing device is fixed to the upper or middle part of the outer wall of the voltage stabilizer.

10. A voltage regulator heat dissipation compensation device, characterized in that, include: Memory; as well as A processor, connected to the memory, and configured to implement the voltage regulator thermal compensation method as described in any one of claims 1-6.

11. A computer-readable storage medium, characterized in that, The device stores computer instructions, which, when executed by a processor, implement the voltage regulator heat dissipation compensation method as described in any one of claims 1-6.

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