Remote disturbance test method, system and equipment for primary frequency modulation of nuclear power unit and medium

Abstract

The invention discloses a remote disturbance test method, system and equipment for primary frequency modulation of a nuclear power unit and a medium, and relates to the related technical field of nuclear power unit testing, and the method comprises the steps: interacting the installation configuration of a primary frequency modulation homologous device of the nuclear power unit, and constructing a test loop; for a test loop, dividing a test main line and a test auxiliary line, and constructing a test control module; receiving a frequency modulation task; based on the test control module, carrying out load regulation decision and condition compensation on the frequency modulation task, and determining a pre-frequency modulation strategy; and based on the pre-frequency modulation strategy, carrying out frequency modulation control of the load frequency difference on the nuclear power unit. The technical problem that in the prior art, frequency modulation requirements caused by large disturbance or remote scheduling instructions cannot be effectively met, and therefore it is difficult to quickly and accurately respond to frequency changes while the stability of the nuclear power unit is guaranteed is solved. The technical effect of improving stable operation and response performance in the remote large-disturbance test process of the primary frequency modulation of the nuclear power unit is achieved.

Description

Technical Field

[0001] The present application relates to the technical field related to nuclear power unit testing, and specifically to a method, system, equipment and medium for remote disturbance testing of primary frequency modulation of a nuclear power unit. Background Art

[0002] The power grid regularly conducts large-scale remote primary frequency regulation (PFR) disturbance tests on generator sets to ensure stable grid operation. By simulating disturbance scenarios with large frequency differences, the adequacy of PFR resources, the agility of the control system, and its multi-regional coordination capabilities are verified. Currently, large-scale remote primary frequency regulation (PFR) disturbance tests have become the norm for thermal power units in Shandong and Jiangsu provinces.

[0003] With the large-scale introduction of renewable energy sources (such as photovoltaics and wind power), the inertia of the power system has decreased, resulting in a reduction in the grid's frequency regulation capability and making it more susceptible to fluctuations. Economically developed provinces in China face high electricity demand, and the volatility and uncertainty of renewable energy sources place higher demands on grid stability. In recent years, with the significant acceleration of nuclear power plant construction, nuclear power's share of electricity supply has been increasing, playing an increasingly important role in the grid's primary frequency regulation. Shandong Province has mandated that nuclear power plants regularly perform a primary frequency regulation remote large disturbance test. This requires that, monthly, when the grid frequency is not experiencing significant disturbances, the primary frequency regulation comprehensive performance indicators are calculated through this remote disturbance test. This is a national first for nuclear power plants. This remote large disturbance test tests the operational stability and load regulation speed of nuclear power plants, necessitating the development of new technologies to enhance the stable operation and responsiveness of nuclear power plants during this test. Summary of the Invention

[0004] The present application improves the operating stability and load regulation speed of nuclear power units in primary frequency regulation remote large disturbance testing by providing a method, system, equipment and medium for remote disturbance testing of nuclear power units.

[0005] The present application provides a remote disturbance test method for primary frequency regulation of a nuclear power unit, the method comprising: configuring the installed configuration of the primary frequency regulation homologous device of the interactive nuclear power unit to construct a test loop, wherein the installed configuration is a dual-path redundant configuration, including hardware equipment and software logic configuration; dividing the test loop into a test main line and a test auxiliary line, and constructing a test control module, wherein the test main line is a variable load frequency regulation control, and the test auxiliary line performs main line control compensation; receiving a frequency regulation task, wherein the frequency regulation task is a power grid frequency regulation instruction or a remote disturbance test instruction, the remote disturbance test instruction is primary frequency regulation load information generated and sent remotely, and the power grid frequency regulation instruction is a power grid frequency signal collected based on sensing; based on the test control module, performing load regulation decision and condition compensation on the frequency regulation task, and determining a pre-frequency regulation strategy; based on the pre-frequency regulation strategy, performing frequency regulation control of the load frequency difference on the nuclear power unit.

[0006] In a possible implementation, the construction of the test control module further performs the following processing: for the test main line, a regulation logic block is constructed based on the linear load regulation relationship of the grid frequency fluctuation; for the test auxiliary line, a DCS logic block is constructed with distributed logic conditions as the compensation target; the regulation logic block is coordinated with the DCS logic block, and sample drive training is performed to generate the test control module.

[0007] In a possible implementation, a linear load regulation relationship is obtained, and the following processing is also performed: historical frequency regulation records of the nuclear power unit are called, clustering processing is performed based on the preset load fluctuation amount of the power grid, and N cluster clusters are determined; a first cluster cluster is identified, and a first frequency regulation node is mined, wherein the first frequency regulation node includes a first load fluctuation vector and a first regulation parameter, the first load fluctuation vector is the mean value of the load fluctuation within the cluster, and the first regulation parameter is the centralized value of the regulation parameter within the cluster; the N cluster clusters are traversed to determine the Nth frequency regulation node, and curve conversion is performed on the first frequency regulation node up to the Nth frequency regulation node to determine the linear load regulation relationship.

[0008] In a possible implementation, the DCS logic block is constructed to further perform the following processing: executing dual-path switching for a primary frequency regulation load adjustment instruction generated by the grid frequency and a primary frequency regulation load adjustment instruction generated by the turbine speed deviation, wherein the primary frequency regulation load adjustment instruction generated by the grid frequency comes from a homologous device, and the switching is triggered by an abnormality in the homologous device; setting a maximum value of load fluctuation frequency regulation to generate a control limit condition for a frequency regulation load instruction fluctuation constraint; when an abnormality occurs in the primary frequency regulation homologous device, sending an alarm instruction to the DCS so that the DCS rejects the frequency regulation instruction; and configuring the DCS logic block of the test auxiliary line based on the dual-path switching, the control limit condition, and the alarm instruction.

[0009] In a possible implementation, the remote disturbance test instruction performs load regulation decision-making and conditional compensation, determines a pre-frequency regulation strategy, and further performs the following processing: based on whether an alarm instruction is received, performs an exception determination on the frequency regulation task and generates a determination result; if the determination result is normal, based on the regulation logic block, determines a first frequency regulation strategy by executing a linear regulation decision of the load frequency conversion amount; transfers the first frequency regulation strategy to the DCS logic block, combines the control limit condition, performs an over-limit determination and multi-step conversion on the first frequency regulation strategy, and determines the pre-frequency regulation strategy through conditional constraint compensation.

[0010] In a possible implementation, after the frequency regulation control of the load frequency difference is performed on the nuclear power unit, the following processing is also performed: based on the primary frequency regulation standard, an indicator evaluation matrix is set, wherein the indicator evaluation matrix has evaluation indicators as matrix rows and multiple evaluation levels as matrix columns; based on the sensor group, the nuclear power unit is subjected to primary frequency regulation response monitoring to determine frequency regulation response data; according to the indicator evaluation matrix, the frequency regulation response data is subjected to single indicator evaluation and weighted comprehensive calculation to determine the frequency regulation test result.

[0011] In a possible implementation, the remote disturbance test method for primary frequency regulation of a nuclear power unit further performs the following processing: based on the sensor group, monitoring the frequency control status of the first parallel branch, wherein the first parallel branch is the primary frequency regulation homologous device currently performing frequency control in the dual-path redundant configuration; performing a fault determination on the frequency control status, switching to the second parallel branch for frequency control, and suspending the frequency control of the first parallel branch.

[0012] The present application also provides a remote disturbance test system for primary frequency regulation of a nuclear power unit, comprising: a test loop construction module, for interacting with the installed configuration of the primary frequency regulation homologous device of the nuclear power unit to construct a test loop, wherein the installed configuration is a dual-path redundant configuration, including hardware equipment and software logic configuration; a test control module construction module, for dividing a test main line and a test auxiliary line for the test loop, and constructing a test control module, wherein the test main line is a variable load frequency regulation control, and the test auxiliary line performs main line control compensation; a frequency regulation task receiving module, for receiving a frequency regulation task, wherein the frequency regulation task is a power grid frequency regulation instruction or a remote disturbance test instruction, the remote disturbance test instruction is a primary frequency regulation load information generated and sent remotely, and the power grid frequency regulation instruction is a power grid frequency signal collected based on sensing; a pre-frequency regulation strategy determination module, for making load regulation decisions and conditional compensation for the frequency regulation task based on the test control module, and determining a pre-frequency regulation strategy; a frequency regulation control module, for performing frequency regulation control of the load frequency difference of the nuclear power unit based on the pre-frequency regulation strategy.

[0013] The present application also provides an electronic device, comprising: a memory for storing executable instructions; and a processor for implementing a remote disturbance test method for primary frequency modulation of a nuclear power unit when executing the executable instructions stored in the memory.

[0014] The present application also provides a computer-readable storage medium, comprising: a computer program stored thereon, which, when executed by a processor, implements a remote disturbance test method for primary frequency modulation of a nuclear power unit.

[0015] The proposed method, system, equipment, and medium for remote perturbation testing of primary frequency regulation of nuclear power units in this application are used to configure the installed configuration of the primary frequency regulation homologous device of the interactive nuclear power unit and construct a test loop. The test loop is divided into a main test line and an auxiliary test line, and a test control module is constructed. Frequency regulation tasks are received. Based on the test control module, load adjustment decisions and conditional compensation are made for the frequency regulation tasks, and a pre-frequency regulation strategy is determined. Based on the pre-frequency regulation strategy, frequency regulation control of the load frequency difference of the nuclear power unit is performed. This solves the technical problem in the prior art of being unable to effectively respond to frequency regulation requirements caused by large disturbances or remote dispatch instructions, which makes it difficult to quickly and accurately respond to frequency changes while ensuring the stability of the nuclear power unit. This achieves the technical effect of improving the stable operation and response performance of the nuclear power unit during remote large perturbation testing of primary frequency regulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To more clearly illustrate the technical solutions of the embodiments of the present disclosure, the accompanying drawings of the embodiments of the present disclosure are briefly introduced below. Flowcharts are used in this application to illustrate the operations performed by the systems according to the embodiments of the present application. It should be understood that the preceding or following operations are not necessarily performed in precise order. Instead, various steps may be processed in reverse order or simultaneously as needed. Furthermore, other operations may be added to these processes, or one or more operations may be removed from these processes.

[0017] Figure 1 A flow chart of a remote disturbance test method for primary frequency modulation of a nuclear power unit provided in an embodiment of the present application.

[0018] Figure 2 This is a schematic diagram of the construction process of the test control module in the remote disturbance test method for primary frequency modulation of a nuclear power unit provided in an embodiment of the present application.

[0019] Figure 3 This is a structural diagram of a remote disturbance test system for primary frequency modulation of a nuclear power unit provided in an embodiment of the present application.

[0020] Figure 4 A schematic diagram of the structure of an electronic device provided in an embodiment of the present application.

[0021] Explanation of the reference numerals: test loop construction module 10 , test control module construction module 20 , frequency modulation task receiving module 30 , pre-frequency modulation strategy determination module 40 , frequency modulation control module 50 , input device 401 , processor 402 , memory 403 , output device 404 . DETAILED DESCRIPTION

[0022] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below.

[0023] In order to make the purpose, technical solutions and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limiting this application. All other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0024] In the following description, reference is made to “some embodiments”, which describes a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict, and the terms “first\second” involved are merely used to distinguish similar objects and do not represent a specific ordering of the objects. The terms “including” and “having” and any variations are intended to cover non-exclusive inclusions. For example, a process, method, system, product or server that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or modules that are not clearly listed or that are inherent to these processes, methods, products or devices. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs. The terms used herein are for the purpose of describing the embodiments of this application only.

[0025] The present application provides a method for remote disturbance testing of primary frequency modulation of a nuclear power unit, such as Figure 1 As shown, the method includes:

[0026] Step S100: The installation configuration of the primary frequency regulation homologous device of the interactive nuclear power unit is constructed to build a test loop, wherein the installation configuration is a dual-path redundant configuration, including hardware equipment and software logic configuration.

[0027] Preferably, the installed configuration of the primary frequency regulation homologous device of the interactive nuclear power unit, wherein the primary frequency regulation homologous device refers to the primary frequency regulation intelligent control device used for the nuclear power unit, and primary frequency regulation means that when the grid frequency fluctuates, the nuclear power unit adjusts its output power according to the change of the grid frequency to help maintain the frequency stability of the grid, and the homologous device means that these devices have consistency and coordination, and the installed configuration refers to a dual-path redundant configuration, including hardware equipment (including high-frequency and high-precision sensors, actuators for performing load regulation, etc.) and software logic configuration (including control strategies and load regulation strategies based on dynamic adjustment of grid power changes, etc.). Specifically, the primary frequency modulation homologous device adopts high-frequency and high-precision sensors, which can realize high-speed and high-precision acquisition of grid frequency signals. The primary frequency modulation homologous device measures data synchronously, has high control accuracy, rapid response, and reasonable control scheme. It adopts a control strategy based on dynamic adjustment of grid power changes to collect frequency signals and adopt different action amplitudes for different frequency differences of the grid. The software logic of the primary frequency modulation homologous device can realize seamless connection between signal acquisition and control, and directly output control instructions; redundant configuration means that the primary frequency modulation optimization system of a single unit is equipped with two primary frequency modulation intelligent control devices, and frequency signals are collected at the same time. Even if one device fails, it will not affect the safety of the system. Finally, a test loop is constructed, that is, a test loop is composed of hardware and software modules to simulate actual scenarios such as grid frequency fluctuations or load changes to test the performance of the primary frequency modulation device of the nuclear power unit to ensure that it can perform frequency modulation tasks as expected in actual operation to ensure the stability of the grid.

[0028] Step S200 , for the test loop, divide the test main line and the test auxiliary line, and construct a test control module, wherein the test main line is load variable frequency control, and the test auxiliary line performs main line control compensation.

[0029] Preferably, the test loop is divided into two key paths with different functions, namely the test main line and the test auxiliary line. The main line and the auxiliary line respectively undertake different functions and tasks, and are usually configured to ensure multi-faceted verification in the test system. Specifically, the test main line is the core channel of the test system, which is mainly responsible for realizing the basic functions of the system. The test main line is variable load frequency control, that is, the nuclear power unit dynamically adjusts its output load according to the frequency fluctuation of the power grid. Variable load frequency control is the core task of the frequency control of the nuclear power unit, which adjusts the unit's power generation power according to the frequency change of the power grid to ensure the frequency stability of the power grid; the test auxiliary line performs main line control compensation, and does not directly perform the main load adjustment, but optimizes the main line through the compensation mechanism. The frequency regulation control effect is achieved by performing necessary compensation or adjustment based on the load regulation results of the test main line to ensure the accuracy and stability of the frequency regulation control. For example, when the main line system is adjusted, the auxiliary line can detect potential errors in the process of load adjustment and make corrections (such as adjusting the amplitude and frequency of the output power in a timely manner) to avoid deviations caused by delays or external interference. Finally, a test control module is constructed to coordinate the test main line and the test auxiliary line. Through unified control logic, the operating status of the main line and the auxiliary line is monitored, and it is decided when to start the compensation function and when to adjust the control strategy. The test control module needs to make real-time decisions based on the frequency regulation instructions of the power grid or the frequency regulation response of the nuclear power unit to ensure the efficiency and accuracy of the overall control process.

[0030] Step S300, receiving a frequency modulation task, wherein the frequency modulation task is a power grid frequency modulation instruction or a remote disturbance test instruction, the remote disturbance test instruction is primary frequency modulation load information generated and sent remotely, and the power grid frequency modulation instruction is a power grid frequency signal collected based on sensing.

[0031] Preferably, receiving the frequency modulation task refers to receiving two types of input task signals that the nuclear power unit needs to process in the frequency modulation test, wherein the frequency modulation task is a power grid frequency modulation instruction or a remote disturbance test instruction. Specifically, the power grid frequency modulation instruction is a power grid frequency signal based on sensor acquisition, that is, a frequency modulation instruction generated by the real-time frequency deviation acquired by the sensor on the nuclear power plant side, which serves as the basic signal for the nuclear power unit to adjust the power generation output. For example, the power grid suddenly increases or decreases in load, causing the frequency to deviate from the set value, or the nuclear power unit needs to participate in the power grid frequency recovery process in a short time. Through the frequency deviation monitored by the measurement point, the power grid frequency modulation instruction directly triggers the rapid frequency modulation response of the nuclear power unit, and helps the power grid restore frequency stability by adjusting the output power of the nuclear power unit. In addition, the power grid frequency modulation instruction has the requirements of immediacy and high dynamics, requiring the system to have a rapid response capability.

[0032] Preferably, the remote disturbance test command is a remotely generated and transmitted primary frequency regulation load command, i.e., a frequency regulation load command generated by a remote dispatch center and sent to a nuclear power unit, typically containing a pre-planned load adjustment signal to guide the nuclear power unit in completing a specific frequency regulation task. Grid frequency regulation commands are based on dynamically changing real-time signals and are typically processed directly by the local control module, while remote disturbance test commands are test signals sent by the dispatch center. Grid frequency regulation commands rely on sensor acquisition and real-time processing by the control module, while remote disturbance test commands rely on remote communication from the dispatch center. By simultaneously processing these two types of signals, the test module can verify the responsiveness and load adjustment performance of the nuclear power unit in frequency control tasks, thereby ensuring that the nuclear power unit can effectively support grid stability during actual operation.

[0033] Step S400: Based on the test control module, load regulation decision and condition compensation are performed on the frequency regulation task to determine a pre-frequency regulation strategy.

[0034] Preferably, the test control module is used to process the frequency regulation task, including load adjustment decision and condition compensation, and then determine the pre-frequency regulation strategy to optimize the frequency regulation effect. Among them, the test control module is the control core. Based on the received frequency regulation task, it integrates various information (such as grid frequency status, unit current load, system dynamic performance, etc.) for analysis and decision-making, that is, the pre-frequency regulation strategy is determined according to the current unit status and grid demand. Specifically, the load adjustment decision refers to determining how the nuclear power unit needs to adjust its output power (load) according to the specific requirements of the frequency regulation task (such as grid frequency deviation or scheduling plan). The decision content may include determining the increase or decrease of load adjustment according to the size of the grid frequency deviation; determining the time range of load adjustment to ensure that the adjustment is completed within the tolerance time of grid frequency fluctuation; in the case of multiple tasks, priority is given to meeting the grid frequency stability requirements, and the scheduling plan is considered secondarily; for example, through the real-time monitoring of the grid frequency signal, the deviation between the current load and the target load is calculated, and combined with the dynamic response capability of the nuclear power unit (such as the maximum load change rate), a feasible adjustment path is formulated.

[0035] Preferably, conditional compensation refers to optimizing and compensating for load regulation in response to external interference (such as grid load change speed exceeding expectations) or internal nonlinearity (such as delay or error in the dynamic response of nuclear power units) that may occur during the frequency regulation process. It may include real-time adjustment of the initial decision based on the load response data actually fed back during the regulation process; precise compensation through the feedback control mechanism when an error is detected between the target load and the actual load; dynamic modification of frequency regulation parameters based on the operating status of the nuclear power unit (such as cooling water temperature, fuel consumption status, etc.) and external environmental conditions; for example, secondary optimization of frequency regulation decisions using real-time data collected by sensors (such as frequency change rate, load adjustment delay), or advanced control (such as fuzzy control, predictive Frequency regulation (measurement and control) is used to predict possible interference and take measures in advance; then a pre-frequency regulation strategy is determined, that is, an adjustment plan is determined before the frequency regulation task is executed, which is used to guide the nuclear power unit to achieve efficient load adjustment in the subsequent frequency regulation process. For example, according to the grid frequency regulation instruction or remote disturbance test instruction, the target value of load adjustment is set. Under the premise of ensuring the safety of the nuclear power unit, the historical operation data and simulation test results are used to optimize the time and power distribution of load adjustment. At the same time, the equipment limitations of the nuclear power unit (such as the maximum regulation speed) and the grid requirements (such as the frequency recovery time requirements) are taken into account to ensure the enforceability of the strategy, thereby ensuring that the nuclear power unit can quickly and stably complete the frequency regulation task when the grid frequency fluctuates, while providing safety guarantees for operation under complex grid conditions.

[0036] Further, such as Figure 2 As shown, step S400 also includes step S410, for the test main line, constructing a regulation logic block according to the linear load regulation relationship of the grid frequency fluctuation; step S420, for the test auxiliary line, constructing a DCS logic block with the distributed logic condition as the compensation target; step S430, coordinating the regulation logic block and the DCS logic block, and performing sample drive training to generate the test control module.

[0037] Preferably, by designing and training the adjustment logic block (main line frequency control) and the DCS logic block (compensation control), a test control module capable of coping with grid frequency fluctuations and complex interference is generated. Specifically, based on the linear load adjustment relationship of the grid frequency fluctuation, an adjustment logic block is constructed, which is mainly responsible for the adjustment decision of the nuclear power unit load. The linear load adjustment relationship of the grid frequency fluctuation refers to the linear relationship between the frequency fluctuation of the grid and the load adjustment of the power station. When the grid frequency increases, the load will be adjusted down. Conversely, when the grid frequency decreases, the load will be adjusted up. Based on the linear relationship of the grid frequency fluctuation, the adjustment logic block is used to calculate the load adjustment amount required for the nuclear power unit, and decide how to adjust the output power (load) of the nuclear power unit according to the amplitude and direction of the grid frequency change to respond to the grid frequency fluctuation and restore frequency stability.

[0038] Preferably, a DCS logic block is constructed with distributed logic conditions as compensation targets, primarily responsible for compensating and optimizing errors and interferences during the frequency regulation process. Distributed logic conditions refer to the combination of multiple complex factors that need to be considered during the power grid frequency regulation process, such as the combination of multiple conditions at different locations, different equipment, and different times. Distributed logic conditions are then used as compensation targets, that is, by constructing a DCS logic block, distributed logic rules are used to resolve various interferences and errors that occur during the load regulation process. The DCS (Distributed Control System) logic block is a distributed control compensation module used to compensate for the complex factors of power grid frequency fluctuations to optimize the frequency regulation response of nuclear power units. Based on multiple input conditions, the DCS logic block uses distributed computing methods to adjust and correct potential errors or imperfect responses in the mainline frequency regulation logic. For example, when a large disturbance occurs in the system, the DCS logic block combines multiple sensors, historical data, and system status, and uses distributed computing (such as local optimization and network collaboration) to dynamically adjust the control strategy, provide accurate compensation signals, and correct the mainline load regulation strategy to ensure system stability.

[0039] Preferably, the regulation logic block and the DCS logic block work together to optimize the frequency regulation control strategy through sample-driven training, that is, the regulation logic block and the DCS logic block work together to achieve optimal frequency regulation control. Specifically, the regulation logic block is responsible for performing preliminary adjustments based on changes in the grid load, while the DCS logic block is responsible for compensating and optimizing the regulation logic based on complex environmental conditions. By working together, the frequency regulation response of the nuclear power unit can be ensured to be more accurate and efficient. Sample-driven training refers to collecting a large amount of actual data samples of grid frequency fluctuations and load adjustments (such as historical data of grid frequency fluctuations, response data of nuclear power units, etc.) as sample data for training optimization, and continuously adjusting and optimizing the parameters of the regulation logic block and the DCS logic block so that they can perform frequency regulation tasks more accurately in actual operation. Finally, a test control module is jointly generated, which integrates the linear response of the main line frequency regulation control and the complex compensation of the auxiliary line compensation control, and is applied to the nuclear power unit in real time to automatically adjust the load and compensate for external interference to ensure grid frequency stability.

[0040] Furthermore, step S410 also includes step S411, calling the historical frequency regulation records of the nuclear power unit, performing clustering processing based on the preset load fluctuation amount of the power grid, and determining N clusters; step S412, identifying the first cluster, mining the first frequency regulation node, wherein the first frequency regulation node includes a first load fluctuation vector and a first adjustment parameter, the first load fluctuation vector is the mean of the load fluctuation within the cluster, and the first adjustment parameter is the centralized value of the adjustment parameter within the cluster; step S413, traversing the N clusters, determining the Nth frequency regulation node, performing curve conversion on the first frequency regulation node until the Nth frequency regulation node, and determining a linear load regulation relationship.

[0041] Preferably, different frequency regulation response modes (i.e., frequency regulation nodes) are identified by clustering analysis of the historical frequency regulation data of the nuclear power unit and the frequency fluctuation mode of the power grid, and a linear relationship between the power grid frequency fluctuation and the frequency regulation response of the nuclear power unit is established by fitting these modes. The historical frequency regulation records of the nuclear power unit are called, and clustering processing is performed based on the preset load fluctuation amount of the power grid. The historical frequency regulation records refer to the past frequency regulation records of the nuclear power unit under different power grid conditions (such as load changes, frequency adjustments, etc.). The load fluctuation amount of the power grid is usually set according to the load demand and historical fluctuation characteristics of the power grid. The preset load fluctuation amount helps to determine the load changes that may occur in the power grid within a specific time period. Then, by comparing the historical frequency regulation records with these By combining the preset load fluctuation amount with clustering, similar frequency regulation modes can be divided into several clusters to identify different load fluctuation modes and analyze their corresponding frequency regulation responses. Each cluster represents the frequency regulation mode of the power grid under specific load fluctuation conditions; then one is randomly selected as the first cluster, and the corresponding first frequency regulation node is mined, that is, a representative load fluctuation amount and regulation parameter, specifically including the first load fluctuation vector and the first regulation parameter, wherein the first load fluctuation vector is the mean of all load fluctuation data in the cluster, indicating the typical characteristics of the power grid frequency fluctuation in the cluster, and the first regulation parameter is the centralized value of all frequency regulation control parameters in the cluster, representing the load regulation characteristics of the nuclear power unit under this load fluctuation mode.

[0042] Preferably, all clusters are traversed continuously to determine N frequency modulation nodes corresponding to N clusters, where N is a positive integer, and then curve conversion is performed on the first frequency modulation node to the Nth frequency modulation node. Specifically, by processing the frequency modulation nodes in multiple clusters (from the first cluster to the Nth cluster), these discrete node data are converted into a continuous curve, including connecting the frequency fluctuation amount and the regulation parameter of each frequency modulation node through curve fitting or interpolation method, and then determining the linear load regulation relationship, that is, the linear load regulation relationship between the frequency fluctuation amount and the regulation parameter. In other words, a mathematical model (such as a linear regression model) can be used to describe the relationship between the grid frequency fluctuation and the frequency regulation response of the nuclear power unit, for example, how the amplitude of the frequency fluctuation affects the change of the regulation parameter of the nuclear power unit, or the relationship between a certain frequency change and the regulation output of the unit, which helps to provide a more accurate frequency regulation control strategy for the nuclear power unit, thereby improving the efficiency of the grid frequency regulation response.

[0043] Furthermore, step S420 also includes step S421, performing dual-path switching for the primary frequency regulation load adjustment instruction generated by the grid frequency and the primary frequency regulation load adjustment instruction generated by the turbine speed deviation, wherein the primary frequency regulation load adjustment instruction generated by the grid frequency comes from the homologous device, and the switching is triggered by the abnormality of the homologous device; step S422, setting the maximum value of the load fluctuation frequency regulation, and generating the control limit condition of the frequency regulation load instruction fluctuation constraint; step S423, when there is an abnormality in the primary frequency regulation homologous device, sending an alarm instruction to the DCS so that the DCS rejects the frequency regulation instruction; step S424, configuring the DCS logic block of the test auxiliary line based on the dual-path switching, the control limit condition and the alarm instruction.

[0044] Preferably, a dual-path redundant configuration comprises two independent sets of primary frequency regulation homologous devices connected in parallel. These two sets of devices operate in parallel, each independently performing the same frequency regulation task to avoid affecting normal operation due to a failure of a single channel. The two sets of primary frequency regulation homologous devices operate in parallel, meaning that the two sets of devices perform tasks simultaneously. Switching is triggered by a single set of control anomalies. That is, when one set of devices fails, the other set can immediately take over the task, thereby executing dual-path switching. When an anomaly or failure occurs, how is switching from one channel to another triggered? That is, when an anomaly occurs in one set of primary frequency regulation homologous devices (e.g., device failure, excessive control error, etc.), a switching operation is triggered, switching to the other set of devices to continue performing the frequency regulation task. For example, if the frequency regulation response of the primary device exceeds the allowable range, a maximum value of the load fluctuation frequency regulation is then set as a control limit condition for the frequency regulation load command fluctuation constraint. The maximum value is limited by the unit capacity. The control limit condition limits the amplitude of the load regulation, ensuring that the load adjustment of the nuclear power unit does not exceed its allowable range during the frequency regulation process, preventing excessive load fluctuations from causing the nuclear power unit to overregulate or enter an unstable state, thereby ensuring the stability of the power grid frequency.

[0045] Preferably, the critical power of the instruction is used as the minimum or maximum power value of the frequency regulation of the nuclear power unit in the frequency regulation instruction. According to the set critical power value, an abnormal judgment alarm logic for the input instruction of the primary frequency regulation homologous device is added, including judging whether it exceeds the critical power range, and then deciding whether it is necessary to trigger an alarm. For example, when the grid frequency fluctuation amplitude exceeds the normal range and the instruction requires the load adjustment of the unit to reach a certain critical value, the alarm condition will be triggered. For example, the input instruction deterioration point alarm; the input instruction is greater than ±0.5MW, and a pulse alarm is issued with a delay; the input instruction is ≥±37.5MW. Alarm; to ensure that the system can respond in time and take effective measures when an abnormality occurs to avoid instability due to over-regulation or improper operation. For example, when the primary frequency regulation homologous device switches to the large disturbance test mode (the grid dispatching system is remotely controlled by RTU), the large disturbance test response signal The signal is simultaneously sent to the DCS, implementing a large disturbance test alarm function and alerting operators to load changes. Finally, the DCS logic block of the test auxiliary line is configured based on the dual-path switching conditions, control limit conditions, and command alarm conditions. This means that compensation is performed based on deviations and external disturbances during actual operation, enabling the nuclear power unit to more accurately perform frequency regulation tasks and maintain grid frequency stability. Specifically, based on the aforementioned dual-path switching, the control limit conditions, and the alarm instructions, the DCS logic block will be configured accordingly to achieve precise control and optimization of the frequency regulation process. For example, if the main line regulation exceeds the set range, the DCS logic block will correct and compensate the main line regulation logic based on real-time data (such as load fluctuations, frequency changes, etc.), adjust the load regulation amount, and ensure that the nuclear power unit operates efficiently and stably in a complex and dynamic power grid environment, thereby ensuring the stable operation of the power grid.

[0046] Furthermore, step S421 also includes step S421a, monitoring the frequency modulation control status of the first parallel branch based on the sensor group, wherein the first parallel branch is a primary frequency modulation homologous device currently performing frequency modulation control in the dual-path redundant configuration; step S421b, performing a fault judgment on the frequency modulation control status, switching to the second parallel branch for frequency modulation control, and suspending the frequency modulation control of the first parallel branch.

[0047] Preferably, in a dual-path redundant configuration, the first parallel branch refers to a primary frequency modulation homologous device that is currently performing a frequency modulation control task, and a sensor group (such as a grid frequency sensor, a load sensor, and other monitoring equipment related to frequency modulation) is used to collect real-time working status (such as load adjustment, frequency correction, power change, etc.) and operating data of the first parallel branch to ensure that the regulation response of the branch meets expectations and to detect potential faults in a timely manner. Then, a fault judgment is made on the frequency modulation control state to determine whether the first parallel branch is operating normally. That is, if the frequency modulation control state is abnormal (such as being unable to respond to frequency changes, load adjustment exceeding the allowable range, equipment failure, etc.), a fault is triggered. A fault judgment is made, and then a dual-path switching instruction is generated. When a device fails or is abnormal, it can be detected in time and switched from the first parallel branch currently in use to the second parallel branch (i.e., redundant branch) to continue frequency regulation control to prevent the power grid frequency regulation task from being affected. The second parallel branch is usually a backup or redundant control path. When a fault occurs in the first parallel branch, it will take over the frequency regulation control, and after switching to the second parallel branch, the frequency regulation control of the first parallel branch will be suspended to prevent conflicts or repeated adjustments when the two branches work at the same time, affecting the frequency regulation effect, enhancing the reliability and fault tolerance of the system, and ensuring the stable implementation of the power grid frequency regulation task.

[0048] Furthermore, step S400 also includes step S440, performing an abnormality determination on the frequency modulation task according to whether an alarm instruction is received, and generating a determination result; step S450, if the determination result is normal, determining a first frequency modulation strategy based on the regulation logic block by executing a linear regulation decision of the load frequency conversion amount; step S460, transferring the first frequency modulation strategy to the DCS logic block, combining the control limit condition, performing an over-limit determination and a multi-step conversion on the first frequency modulation strategy, and determining a pre-frequency modulation strategy through conditional constraint compensation.

[0049] Preferably, by real-time monitoring of the frequency modulation task, anomalies are determined based on the instruction alarm conditions to identify anomalies or inconsistencies in the frequency modulation task, that is, by judging whether the instruction triggers the alarm condition, it is confirmed whether the frequency modulation task is executed normally. If the instruction does not exceed the preset range, the task is considered to be executed normally; if there is an anomaly, an alarm will be triggered, and corresponding remedial measures will be taken according to the judgment result, and this normal or abnormal result will be used as the judgment result; if the judgment result is normal, the adjustment logic block will be called to execute the linear adjustment decision of the load frequency conversion amount by responding to the grid frequency fluctuation, that is, based on the grid frequency deviation and load fluctuation, the adjustment logic block calculates the appropriate adjustment amount (load frequency conversion amount) as the first frequency modulation strategy, that is, under normal circumstances, the nuclear power unit takes preliminary frequency modulation measures according to the grid frequency fluctuation, including how to adjust the load, the adjustment rate and amplitude, etc., wherein the adjustment logic block is the core control module responsible for executing the load adjustment decision.

[0050] Preferably, the DCS logic block receives the first frequency modulation strategy generated by the regulation logic block and further adjusts and optimizes it. The DCS logic block needs to combine the control limit conditions, that is, to limit the maximum and minimum ranges of load fluctuations to ensure that the frequency modulation strategy does not exceed the system safety range. For example, when the load fluctuation exceeds the preset safety range, the DCS logic block will limit the adjustment amplitude of the frequency modulation strategy to avoid excessive load changes leading to unit instability or power grid failure. Specifically, the first frequency modulation strategy is subjected to over-limit judgment and multi-step conversion. The over-limit judgment refers to checking whether the frequency modulation strategy exceeds the predetermined safety range or limit value. If the load change to be adjusted exceeds the maximum regulation capacity of the nuclear power unit or exceeds the safety range of the power grid frequency stability, an over-limit judgment is performed and the strategy is blocked. The frequency regulation strategy is implemented in a step-by-step manner. During the frequency regulation process of nuclear power units, changes in load regulation may need to be carried out step by step in multiple times to avoid excessive system burden or excessive fluctuations. Multi-step conversion means dividing the frequency regulation strategy into multiple steps (the step size is adjusted according to actual conditions. If the amplitude modulation is too large, it may affect the stability of the power grid and the effect is not good; if the amplitude modulation is too small, there is no need to adjust it). Each step of the frequency regulation operation is executed step by step to achieve smooth load regulation. Then, through conditional constraint compensation, the DCS logic block dynamically modifies the strategy according to actual conditions, such as adjusting the regulation time, power change, etc., and finally determines the pre-frequency regulation strategy, which takes into account factors such as load fluctuation restrictions, frequency regulation strategy compensation, over-limit adjustment, and step-by-step adjustment. It aims to ensure that nuclear power units can be regulated efficiently and smoothly under changes in power grid load.

[0051] Step S500: Based on the pre-frequency regulation strategy, frequency regulation control of the load frequency difference is performed on the nuclear power unit.

[0052] Preferably, after receiving the frequency regulation instruction from the power grid, based on the pre-established pre-frequency regulation strategy, the nuclear power unit controls the power grid frequency deviation (i.e., frequency difference) by adjusting its power generation load. The frequency regulation control process needs to make corresponding load adjustment decisions based on the change in power grid frequency (load frequency difference) and the response capability of the unit. Through precise load adjustment, the nuclear power unit can help the power grid return to a normal frequency level and ensure the stable operation of the power grid. That is, the decision content of the pre-frequency regulation strategy is used to perform frequency regulation control of the nuclear power unit based on the load frequency difference. The load frequency difference refers to the difference between the current frequency of the power grid and its expected frequency. When the power grid load increases or decreases, the frequency may deviate from the set value. Frequency deviation (usually 50Hz) can lead to grid instability. Load frequency deviation frequency control reduces this frequency deviation and restores grid frequency stability by adjusting the load of nuclear power units. Specifically, it detects grid frequency changes in real time. When the grid frequency deviates from the target frequency (usually 50Hz), the nuclear power units must coordinate with the grid to make corresponding load adjustments. Based on the pre-frequency regulation strategy, the nuclear power units adjust their output power based on the frequency deviation. For example, when the frequency is low (i.e., the grid is overloaded), the units increase their load; when the frequency is high (i.e., the grid is underloaded), the units reduce their load. By precisely controlling load output, the grid frequency returns to the target frequency and minimizes the frequency deviation. By employing optimized frequency regulation strategies, real-time feedback mechanisms, and dynamic adjustment methods, nuclear power units ensure that the grid frequency can be restored as quickly and accurately as possible during load fluctuations, maintaining grid stability and reliability.

[0053] Furthermore, step S500 also includes step S510, setting an indicator evaluation matrix based on a primary frequency modulation standard, wherein the indicator evaluation matrix has evaluation indicators as matrix rows and multiple evaluation levels as matrix columns; step S520, based on the sensor group, performing a primary frequency modulation response monitoring on the nuclear power unit to determine the frequency modulation response data; step S530, performing a single indicator evaluation and weighted comprehensive calculation on the frequency modulation response data according to the indicator evaluation matrix to determine the frequency modulation test result.

[0054] Preferably, the primary frequency regulation standard is the frequency regulation task that the nuclear power unit must complete in accordance with the standard requirements when the grid frequency fluctuates, including key performance indicators such as response time, frequency deviation correction amplitude, and power regulation accuracy. According to the primary frequency regulation standard, an indicator evaluation matrix is set to evaluate the frequency regulation response capability of the nuclear power unit, wherein the matrix rows represent different evaluation indicators, such as frequency regulation response time, frequency deviation, adjustment amplitude, power change rate, etc., and the matrix columns represent different evaluation levels, such as excellent, good, qualified, and to be improved. Each indicator is assigned a corresponding level according to the response result; the sensor group is used to monitor the grid frequency, the power output of the nuclear power unit, etc. in real time to obtain the grid frequency change data and the response data of the nuclear power unit during the frequency regulation process, including the frequency deviation correction value, the adjusted load, etc., and then in the evaluation Based on the judgment matrix, each monitored frequency regulation response data is evaluated separately. For example, the evaluation indicator is the frequency regulation response speed. If the actual response speed is less than the specified value, the indicator may be rated as excellent; if it exceeds the range, it may be rated as needing improvement; since different evaluation indicators have different degrees of influence on the frequency regulation test, each indicator is weighted. For example, response time and frequency deviation may be more important than power change rate, and a higher weight is given to response time and frequency deviation. Finally, a comprehensive result is obtained to reflect the comprehensive performance of the nuclear power unit in the frequency regulation task. The single indicator evaluation is combined with the results obtained after weighted comprehensive calculation to obtain the frequency regulation test result, thereby ensuring that it can respond to grid frequency fluctuations in a timely and accurate manner in actual operation, improve response performance and ensure grid stability.

[0055] In the above, refer to Figure 1 The remote disturbance test method for primary frequency regulation of a nuclear power unit according to an embodiment of the present invention is described in detail. Figure 3 A remote disturbance test system for primary frequency regulation of a nuclear power plant according to an embodiment of the present invention is described.

[0056] The remote disturbance test system for primary frequency regulation of a nuclear power plant according to an embodiment of the present invention is designed to address the technical problem of the prior art, which is the inability to effectively respond to frequency regulation requirements caused by large disturbances or remote dispatch instructions, resulting in difficulty in quickly and accurately responding to frequency changes while ensuring the stability of the nuclear power plant. This system achieves the technical effect of improving the stable operation and response performance of nuclear power plant primary frequency regulation during remote large disturbance testing. The system includes a test loop construction module 10, a test control module construction module 20, a frequency regulation task receiving module 30, a pre-frequency regulation strategy determination module 40, and a frequency regulation control module 50.

[0057] A test loop construction module 10 is used to configure the installed configuration of the primary frequency regulation homologous device of the interactive nuclear power unit to construct a test loop, wherein the installed configuration is a dual-path redundant configuration, including hardware equipment and software logic configuration; a test control module construction module 20 is used to divide the test loop into a test main line and a test auxiliary line to construct a test control module, wherein the test main line is variable load frequency regulation control, and the test auxiliary line performs main line control compensation; a frequency regulation task receiving module 30 is used to receive a frequency regulation task, wherein the frequency regulation task is a power grid frequency regulation instruction or a remote disturbance test instruction, the remote disturbance test instruction is a primary frequency regulation load information generated and sent remotely, and the power grid frequency regulation instruction is a power grid frequency signal collected based on sensors; a pre-frequency regulation strategy determination module 40 is used to make load regulation decisions and conditional compensation for the frequency regulation task based on the test control module, and determine the pre-frequency regulation strategy; a frequency regulation control module 50 is used to perform frequency regulation control of the load frequency difference of the nuclear power unit based on the pre-frequency regulation strategy.

[0058] The specific configuration of the test control module construction module 20 will be described in detail below. The test control module construction module 20 further includes: a regulation logic block construction module for constructing a regulation logic block for the test main line based on the linear load regulation relationship of grid frequency fluctuations; a DCS logic block construction module for constructing a DCS logic block for the test auxiliary line using distributed logic conditions as compensation targets; and a sample drive training module for coordinating the regulation logic block with the DCS logic block and performing sample drive training to generate the test control module.

[0059] The specific configuration of the test control module construction module 20 will be described in detail below. The test control module construction module 20 further includes: a clustering processing module for calling the historical frequency regulation records of the nuclear power unit, performing clustering processing based on the preset load fluctuation amount of the power grid, and determining N clusters; a first frequency regulation node mining module for identifying the first cluster and mining the first frequency regulation node, wherein the first frequency regulation node includes a first load fluctuation vector and a first regulation parameter, the first load fluctuation vector is the mean value of the load fluctuation within the cluster, and the first regulation parameter is the centralized value of the regulation parameter within the cluster; a linear load regulation relationship determination module for traversing the N clusters, determining the Nth frequency regulation node, performing curve conversion on the first frequency regulation node up to the Nth frequency regulation node, and determining a linear load regulation relationship.

[0060] The specific configuration of the test control module construction module 20 will be described in detail below. The test control module construction module 20 further includes: performing dual-path switching for the primary frequency regulation load adjustment command generated by the grid frequency and the primary frequency regulation load adjustment command generated by the turbine speed deviation, wherein the primary frequency regulation load adjustment command generated by the grid frequency comes from the same source device, and the switching is triggered by an abnormality in the same source device; setting a maximum value for load fluctuation frequency regulation and generating a control limit condition for the frequency regulation load command fluctuation constraint; when an abnormality exists in the primary frequency regulation same source device, sending an alarm command to the DCS so that the DCS rejects the frequency regulation command; and configuring the DCS logic block of the test auxiliary line based on the dual-path switching, the control limit condition, and the alarm command.

[0061] The specific configuration of the pre-frequency regulation strategy determination module 40 will be described in detail below. The pre-frequency regulation strategy determination module 40 further includes: performing an exception determination on the frequency regulation task based on whether an alarm instruction has been received, and generating a determination result; if the determination result is normal, determining a first frequency regulation strategy by executing a linear regulation decision on the load frequency conversion amount based on the regulation logic block; transferring the first frequency regulation strategy to the DCS logic block, and performing an over-limit determination and multi-step conversion on the first frequency regulation strategy in combination with the control limit conditions, and determining the pre-frequency regulation strategy through conditional constraint compensation.

[0062] The specific configuration of the frequency modulation control module 50 will be described in detail below. The frequency modulation control module 50 may further include: setting an indicator evaluation matrix based on the primary frequency modulation standard, wherein the indicator evaluation matrix has evaluation indicators as matrix rows and multiple evaluation levels as matrix columns; performing primary frequency modulation response monitoring on the nuclear power unit based on the sensor group to determine frequency modulation response data; and performing single indicator evaluation and weighted comprehensive calculation on the frequency modulation response data based on the indicator evaluation matrix to determine the frequency modulation test results.

[0063] The specific configuration of the frequency modulation control module 50 will be described in detail below. The frequency modulation control module 50 may further include: monitoring the frequency modulation control status of the first parallel branch based on the sensor group, wherein the first parallel branch is the primary frequency modulation homologous device currently performing frequency modulation control in the dual-path redundant configuration; performing a fault determination on the frequency modulation control status, switching to the second parallel branch for frequency modulation control, and suspending frequency modulation control of the first parallel branch.

[0064] The nuclear power unit primary frequency modulation remote disturbance test system provided by the embodiment of the present invention can execute the nuclear power unit primary frequency modulation remote disturbance test method provided by any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method.

[0065] Based on the foregoing embodiments, an embodiment of the present application further provides an electronic device and a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program. When the computer program is executed by a processor of the electronic device, it can implement the method described in any of the foregoing embodiments.

[0066] Figure 4 1 is a schematic structural diagram of an electronic device provided by an embodiment of the present invention, showing a block diagram of an exemplary electronic device suitable for implementing an embodiment of the present invention. Figure 4 The electronic device shown is merely an example and should not limit the functionality and scope of use of the embodiments of the present invention. The electronic device is implemented as a general-purpose computing device, and its components may include, but are not limited to, an input device 401, a processor 402, a memory 403, and an output device 404. There may be one or more processors 402; the memory 403 may include computer-readable media and at least one program product, which has a set (at least one) of program modules configured to perform the functions of the various embodiments of the present application.

[0067] The memory 403 shown in the embodiment of the present invention may adopt any combination of one or more computer-readable media; the computer-readable storage medium may be, but is not limited to, an infrared, semiconductor system, device or component, or any combination thereof, and is used to store software programs, computer executable programs and modules, such as the program instructions / modules corresponding to the nuclear power unit primary frequency modulation remote disturbance test method in the embodiment of the present invention. The processor 402 executes various functional applications and data processing of the computer device by running the software programs, instructions and modules stored in the memory 403, thereby implementing the above-mentioned nuclear power unit primary frequency modulation remote disturbance test method.

[0068] Although the present application makes various references to certain modules in the system according to the embodiments of the present application, any number of different modules may be used and run on the user terminal and / or server, and the various units and modules included are only divided according to functional logic, but are not limited to the above division, as long as the corresponding functions can be achieved; in addition, the specific names of the functional units are only for the convenience of distinguishing each other and are not used to limit the scope of protection of the present invention.

[0069] The above specific embodiments do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application shall be included within the scope of protection of this application.

Claims

1. A remote disturbance test method for primary frequency modulation of a nuclear power unit, characterized in that: The method comprises: The installation configuration of the primary frequency regulation homologous device of the interactive nuclear power unit is used to build a test loop, wherein the installation configuration is a dual-path redundant configuration, including hardware equipment and software logic configuration; For the test loop, a test main line and a test auxiliary line are divided to construct a test control module, wherein the test main line is variable load frequency control, and the test auxiliary line performs main line control compensation; Receiving a frequency modulation task, wherein the frequency modulation task is a power grid frequency modulation instruction or a remote disturbance test instruction, the remote disturbance test instruction is primary frequency modulation load information generated and sent remotely, and the power grid frequency modulation instruction is a power grid frequency signal collected based on sensing; Based on the test control module, load adjustment decision and condition compensation are performed on the frequency regulation task to determine the pre-frequency regulation strategy; Based on the pre-frequency regulation strategy, the frequency regulation control of the load frequency difference is performed on the nuclear power unit.

2. The remote disturbance test method for primary frequency modulation of a nuclear power unit according to claim 1, characterized in that: The construction test control module includes: For the test main line, a regulation logic block is constructed according to the linear load regulation relationship of the grid frequency fluctuation; For the test auxiliary line, a DCS logic block is constructed with distributed logic conditions as compensation targets; The adjustment logic block and the DCS logic block are coordinated and sample drive training is performed to generate the test control module.

3. The remote disturbance test method for primary frequency modulation of a nuclear power unit according to claim 2, characterized in that: Obtain linear load regulation relationships, including: Call the historical frequency regulation records of nuclear power units, perform clustering based on the preset load fluctuation of the power grid, and determine N clusters; Identifying a first cluster and mining a first frequency modulation node, wherein the first frequency modulation node includes a first load fluctuation vector and a first adjustment parameter, the first load fluctuation vector is a mean value of load fluctuations within the cluster, and the first adjustment parameter is a centralized value of the adjustment parameter within the cluster; The N clusters are traversed to determine an Nth frequency modulation node, and curve conversion is performed on the first frequency modulation node to the Nth frequency modulation node to determine a linear load regulation relationship.

4. The remote disturbance test method for primary frequency modulation of a nuclear power unit according to claim 2, characterized in that: The DCS logic block is constructed, including: Dual-path switching is performed for the primary frequency regulation load adjustment command generated by the grid frequency and the primary frequency regulation load adjustment command generated by the turbine speed deviation. The primary frequency regulation load adjustment command generated by the grid frequency comes from the same source device, and the switching is triggered by the abnormality of the same source device. Set the maximum value of load fluctuation frequency regulation and generate the control limit conditions for frequency regulation load instruction fluctuation constraint; When an abnormality occurs in the primary frequency modulation homologous device, an alarm command is sent to the DCS so that the DCS will reject the frequency modulation command; Based on the dual-path switching, the control limit condition and the alarm instruction, a DCS logic block of the test auxiliary line is configured.

5. The remote disturbance test method for primary frequency modulation of a nuclear power unit according to claim 4, characterized in that: Perform load regulation decision and condition compensation for the frequency regulation task and determine the pre-frequency regulation strategy, including: According to whether an alarm instruction is received, performing an error determination on the frequency modulation task and generating a determination result; If the determination result is normal, determining a first frequency regulation strategy by executing a linear regulation decision of the load frequency conversion amount based on the regulation logic block; The first frequency modulation strategy is transferred to the DCS logic block, and combined with the control limit condition, the first frequency modulation strategy is subjected to limit-crossing judgment and multi-step conversion, and the pre-frequency modulation strategy is determined through conditional constraint compensation.

6. The remote disturbance test method for primary frequency modulation of a nuclear power unit according to claim 1, characterized in that: After the frequency regulation control of the load frequency difference of the nuclear power unit is performed, the method includes: Based on the primary frequency modulation standard, an indicator evaluation matrix is set, wherein the indicator evaluation matrix has evaluation indicators as matrix rows and multiple evaluation levels as matrix columns; Based on the sensor group, a frequency modulation response monitoring is performed on the nuclear power unit to determine frequency modulation response data; According to the indicator evaluation matrix, single indicator evaluation and weighted comprehensive calculation are performed on the frequency modulation response data to determine the frequency modulation test result.

7. The remote disturbance test method for primary frequency modulation of a nuclear power unit according to claim 4, characterized in that: The method comprises: Monitoring a frequency modulation control state of a first parallel branch based on a sensor group, wherein the first parallel branch is a primary frequency modulation homologous source device currently performing frequency modulation control in the dual-path redundant configuration; A fault determination is performed on the frequency modulation control state, frequency modulation control is switched to the second parallel branch, and frequency modulation control of the first parallel branch is suspended.

8. A remote disturbance test system for primary frequency modulation of a nuclear power unit, characterized in that: The system is used to implement the remote disturbance test method for primary frequency regulation of a nuclear power unit according to any one of claims 1 to 7, and the system comprises: A test loop construction module is used to construct a test loop based on the installed configuration of the primary frequency regulation homologous device of the interactive nuclear power unit, wherein the installed configuration is a dual-path redundant configuration including hardware equipment and software logic configuration; A test control module construction module is used to divide the test loop into a test main line and a test auxiliary line, and construct a test control module, wherein the test main line is variable load frequency control, and the test auxiliary line performs main line control compensation; A frequency modulation task receiving module is used to receive a frequency modulation task, wherein the frequency modulation task is a power grid frequency modulation instruction or a remote disturbance test instruction, the remote disturbance test instruction is primary frequency modulation load information generated and sent remotely, and the power grid frequency modulation instruction is a power grid frequency signal collected based on sensing; A pre-frequency regulation strategy determination module is used to perform load regulation decision and condition compensation on the frequency regulation task based on the test control module, and determine the pre-frequency regulation strategy; The frequency regulation control module is used to perform frequency regulation control of the load frequency difference of the nuclear power unit based on the pre-frequency regulation strategy.

9. An electronic device, characterized in that: The electronic device comprises: a memory for storing executable instructions; The processor is configured to implement the remote disturbance test method for primary frequency modulation of a nuclear power unit according to any one of claims 1 to 7 when executing the executable instructions stored in the memory.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the program is executed by a processor, the remote disturbance test method for primary frequency regulation of a nuclear power unit as described in any one of claims 1 to 7 is implemented.

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