A method and system for coordinated control of permanent magnet synchronous generator based on load mutation

Abstract

The present invention relates to a coordinated control method and system of a permanent magnet synchronous generator based on load mutation, and relates to the field of intelligent control technology, including: using sensors to continuously monitor the load condition of the permanent magnet synchronous generator, and collecting the load current, voltage and power factor in real time; comparing the load current, voltage and power factor with the preset safe operation threshold, and triggering an alarm if a mutation exceeding the threshold is detected; in response, activating a PID controller to switch it from a standby state to a working state; the PID controller calculates the adjustment amount through the operation of the three links of proportion, integration and differentiation according to the deviation between the collected real-time data and the set value; according to the adjustment amount, dynamically adjusting the excitation current of the permanent magnet synchronous generator, and adjusting the output power of the generator according to the real-time demand of the power system. The present invention can make an accurate response within milliseconds, and effectively improves the dynamic performance of the generator.

Description

Technical Field

[0001] The invention relates to the field of intelligent control technology, and in particular to a coordinated control method of a permanent magnet synchronous generator based on load mutation. Background Art

[0002] With the continuous development of renewable energy generation technology, the balance of supply and demand in the power grid has become increasingly important. Energy storage systems play a key role in this process. They can store energy when the grid has excess energy and release the stored energy when the grid demand peaks. This technology is particularly helpful in solving the problem of grid instability caused by the randomness, volatility and intermittency of renewable energy generation, because advanced energy storage systems can provide millisecond-level dynamic power compensation.

[0003] In a dynamic electricity market environment, the value of energy storage systems is further reflected. In particular, the implementation of peak and valley electricity prices has created greater economic value and application space for energy storage systems. Energy storage systems can store electricity when electricity prices are low, and release electricity when electricity prices are high or when the grid needs to dispatch. This not only effectively participates in the peak load regulation process of the grid, but also maximizes the economic benefits of distributed generation.

[0004] However, the traditional technical solutions have some defects in the implementation process:

[0005] For example, traditional power regulation systems may not be able to provide fast response speeds like advanced energy storage systems. This may cause delays in handling instantaneous fluctuations in the power grid, thereby affecting the stability and efficiency of the power grid. For another example, some traditional power control systems do not have advanced control algorithms, such as PID control, which limits the system's ability to respond quickly and accurately to sudden load changes. Summary of the invention

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a permanent magnet synchronous generator coordinated control method based on load mutation, which can make accurate responses within milliseconds and effectively improve the dynamic performance of the generator.

[0007] In order to solve the above technical problems, the basic concept of the technical solution adopted by the present invention is:

[0008] In a first aspect, a coordinated control method for a permanent magnet synchronous generator based on a sudden load change comprises:

[0009] Initialize the permanent magnet synchronous generator, including determining its initial excitation current and target output voltage and frequency; configure key parameters of the PID controller, including proportional coefficient, integral coefficient and differential coefficient;

[0010] Use sensors to continuously monitor the load condition of the permanent magnet synchronous generator and collect load current, voltage and power factor in real time;

[0011] Compare the load current, voltage and power factor with the preset safe operation thresholds. If a sudden change beyond the threshold is detected, an alarm is triggered; in response, the PID controller is activated to switch from standby to working state;

[0012] The PID controller calculates the adjustment amount through the three operations of proportion, integration and differentiation according to the deviation between the collected real-time data and the set value;

[0013] According to the regulation amount, the excitation current of the permanent magnet synchronous generator is dynamically adjusted, and the output power of the generator is adjusted according to the real-time needs of the power system.

[0014] Furthermore, the permanent magnet synchronous generator is initialized, including determining its initial excitation current and target output voltage and frequency; configuring key parameters of the PID controller, including proportional coefficient, integral coefficient and differential coefficient, including:

[0015] Determine the optimization goal and variable range; set the starting temperature of the simulated annealing algorithm, determine the temperature drop ratio in each iteration step, the stop temperature, and the number of iterations at each temperature;

[0016] A set of initial parameters is randomly generated as the current solution, and the initial parameters include initial excitation current, target output voltage and frequency, and PID parameters;

[0017] Calculate the objective function value of the current solution and iterate the optimization, including:

[0018] At the current temperature, perform L iterations. In each iteration, generate a new solution in the neighborhood of the current solution and calculate the objective function value of the new solution. Decide whether to accept the new solution based on the Metropolis criterion. After completing the inner loop, reduce the current temperature based on the temperature drop rate. Repeat the inner loop and temperature drop process until the termination temperature is reached to obtain the optimized parameter combination.

[0019] The permanent magnet synchronous generator is initialized and the PID controller is configured using the optimized parameter combination; the optimized parameters obtained by the simulated annealing algorithm are set as the initial excitation current, target output voltage and frequency of the permanent magnet synchronous generator, as well as the proportional coefficient, integral coefficient and differential coefficient of the PID controller.

[0020] Furthermore, the calculation formula of the objective function value is:

[0021]

[0022] Where J represents the value of the objective function; w1, w2 and w3 are weight coefficients; represents the integral of the absolute value of the rate of change of the output data y(t) from time 0 to time t2; |y(t)-y final | indicates that at any time t, the output data y(t) and the final steady-state value y final The deviation between -λt dt is a decay factor; λ is the decay rate; It represents the average value of the absolute error between the input data r(t) and the output data y(t) within a period T of the input signal.

[0023] Furthermore, sensors are used to continuously monitor the load condition of the permanent magnet synchronous generator and collect load current, voltage and power factor in real time, including:

[0024] Configure the sensor to collect data at a set sampling frequency to obtain load current and voltage data;

[0025] transmitting load current and voltage data to a data processing unit via wireless communication;

[0026] The data processing unit preprocesses the original load current and voltage data to obtain preprocessed load current and voltage data;

[0027] The pre-processed load current and voltage data are used to calculate the effective value of the load current, the effective value of the voltage and the power factor in real time. The power factor is calculated by the phase difference between the load current and voltage.

[0028] Furthermore, the load current, voltage and power factor are compared with preset safe operation thresholds. If a sudden change exceeding the threshold is detected, an alarm is triggered; in response, the PID controller is activated to switch from a standby state to an operating state, including:

[0029] Set corresponding safe operation thresholds for load current, voltage and power factor respectively;

[0030] The data processing unit continuously compares the real-time collected load current, voltage and power factor data with the preset safe operation thresholds;

[0031] If it is detected that a parameter exceeds the safe operation threshold or undergoes a sudden change, the data processing unit triggers an alarm;

[0032] In response to the alarm, the data processing unit sends an activation signal to the PID controller to switch it from the standby state to the operating state.

[0033] Furthermore, the PID controller calculates the adjustment amount based on the deviation between the collected real-time data and the set value through the operations of proportion, integration and differentiation, including:

[0034] The controller multiplies the deviation value by the proportional coefficient to obtain the proportional adjustment amount;

[0035] The controller performs an integral operation on the deviation value, and then multiplies it by the integral coefficient to obtain the integral adjustment amount;

[0036] The controller calculates the rate of change of the deviation value, multiplies it by the differential coefficient, and obtains the differential adjustment amount;

[0037] The PID controller adds the proportional regulation, integral regulation and differential regulation to obtain the total regulation.

[0038] Furthermore, according to the adjustment amount, the excitation current of the permanent magnet synchronous generator is dynamically adjusted, and the output power of the generator is adjusted according to the real-time demand of the power system, including:

[0039] Sending the total adjustment amount to the generator control system;

[0040] The motor control system resolves the total regulation amount into the corresponding excitation current adjustment value;

[0041] According to the excitation current adjustment value, the dynamic adjustment of the excitation current is achieved by adjusting the current value in the excitation circuit.

[0042] In a second aspect, a permanent magnet synchronous generator coordinated control system based on load mutation includes:

[0043] Configuration module, used to initialize the permanent magnet synchronous generator, including determining its initial excitation current and target output voltage and frequency; configuring key parameters of the PID controller, including proportional coefficient, integral coefficient and differential coefficient;

[0044] The acquisition module is used to continuously monitor the load condition of the permanent magnet synchronous generator using sensors and collect the load current, voltage and power factor in real time;

[0045] The detection module is used to compare the load current, voltage and power factor with the preset safe operation threshold. If a sudden change beyond the threshold is detected, an alarm is triggered; in response, the PID controller is activated to switch from standby mode to working mode;

[0046] The calculation module is used for the PID controller to calculate the adjustment amount through the operations of proportion, integration and differentiation according to the deviation between the collected real-time data and the set value;

[0047] The adjustment module is used to dynamically adjust the excitation current of the permanent magnet synchronous generator according to the adjustment amount, and adjust the output power of the generator according to the real-time needs of the power system.

[0048] According to a third aspect, a computing device includes:

[0049] one or more processors;

[0050] The storage device is used to store one or more programs. When the one or more programs are executed by the one or more processors, the one or more processors implement the method described.

[0051] In a fourth aspect, a computer-readable storage medium stores a program, and when the program is executed by a processor, the method described is implemented.

[0052] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0053] By continuously monitoring the load and collecting data in real time, this method can quickly detect sudden changes in load and immediately trigger an alarm. The activation of the PID controller and the calculation of real-time data deviations further ensure that the system can respond accurately within milliseconds, effectively improving the dynamic performance of the generator.

[0054] By comparing the load current, voltage and power factor with the preset safe operation threshold, timely adjustments can be made when the load changes beyond the safe range. This mechanism significantly enhances the stability and safety of the power system and reduces the risk of failure caused by load changes.

[0055] This method integrates multiple links such as initialization setting, real-time monitoring, alarm triggering, PID control and dynamic adjustment, realizing the intelligent and automatic control of generators. This not only reduces the burden on operators, but also improves the accuracy and consistency of the control process.

[0056] Adjusting the output power of the generator according to the real-time demand of the power system enables this method to meet the power demand while taking into account the power price factor. This strategy helps to optimize energy management, reduce operating costs, and maximize economic benefits in the power market environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. Some specific embodiments of the present application will be described in detail in an illustrative and non-restrictive manner with reference to the drawings. The same reference numerals in the drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the drawings:

[0058] Figure 1 It is a schematic diagram of the coordinated control method of the permanent magnet synchronous generator based on load mutation of the present invention.

[0059] Figure 2 It is a schematic diagram of the coordinated control system of the permanent magnet synchronous generator based on load mutation of the present invention. DETAILED DESCRIPTION

[0060] In order to enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below according to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work should fall within the scope of protection of the present application.

[0061] The following embodiment of the present application takes the coordinated control method of a permanent magnet synchronous generator based on load mutation as an example to explain the scheme of the present application in detail, but this embodiment cannot limit the protection scope of the present application.

[0062] like Figure 1 As shown, the present invention provides a coordinated control method for a permanent magnet synchronous generator based on load mutation, comprising:

[0063] Initialize the permanent magnet synchronous generator, including determining its initial excitation current and target output voltage and frequency; configure key parameters of the PID controller, including proportional coefficient, integral coefficient and differential coefficient;

[0064] Use sensors to continuously monitor the load condition of the permanent magnet synchronous generator and collect load current, voltage and power factor in real time;

[0065] Compare the load current, voltage and power factor with the preset safe operation thresholds. If a sudden change beyond the threshold is detected, an alarm is triggered; in response, the PID controller is activated to switch from standby to working state;

[0066] The PID controller calculates the adjustment amount through the three operations of proportion, integration and differentiation according to the deviation between the collected real-time data and the set value;

[0067] According to the regulation amount, the excitation current of the permanent magnet synchronous generator is dynamically adjusted, and the output power of the generator is adjusted according to the real-time needs of the power system.

[0068] In an embodiment of the present invention, by continuously monitoring the load conditions and collecting data in real time, the method can quickly detect sudden changes in the load and immediately trigger an alarm. The activation of the PID controller and the calculation of the real-time data deviation further ensure that the system can respond accurately within milliseconds, effectively improving the dynamic performance of the generator. The load current, voltage and power factor are compared with the preset safe operation threshold, and timely adjustments can be made when the load mutation exceeds the safety range. This mechanism significantly enhances the stability and safety of the power system and reduces the risk of failure caused by sudden load changes. The method integrates multiple links such as initialization settings, real-time monitoring, alarm triggering, PID control and dynamic adjustment, and realizes the intelligent and automatic control of the generator. This not only reduces the burden on the operator, but also improves the accuracy and consistency of the control process. The output power of the generator is adjusted according to the real-time demand of the power system, so that the method can fully consider the electricity price factor while meeting the power demand. This strategy helps to optimize energy management, reduce operating costs, and maximize economic benefits in the power market environment.

[0069] In an embodiment of the present invention, the permanent magnet synchronous generator is initialized and set, including determining its initial excitation current and target output voltage and frequency; configuring key parameters of the PID controller, including proportional coefficient, integral coefficient and differential coefficient, including:

[0070] Determine the optimization goal and variable range; set the starting temperature of the simulated annealing algorithm, determine the temperature drop ratio in each iteration step, the stop temperature, and the number of iterations at each temperature;

[0071] A set of initial parameters is randomly generated as the current solution, and the initial parameters include initial excitation current, target output voltage and frequency, and PID parameters;

[0072] Calculate the objective function value of the current solution and iterate the optimization, including:

[0073] At the current temperature, perform L iterations. In each iteration, generate a new solution in the neighborhood of the current solution and calculate the objective function value of the new solution. Decide whether to accept the new solution based on the Metropolis criterion. After completing the inner loop, reduce the current temperature based on the temperature drop rate. Repeat the inner loop and temperature drop process until the termination temperature is reached to obtain the optimized parameter combination.

[0074] The permanent magnet synchronous generator is initialized and the PID controller is configured using the optimized parameter combination; the optimized parameters obtained by the simulated annealing algorithm are set as the initial excitation current, target output voltage and frequency of the permanent magnet synchronous generator, as well as the proportional coefficient, integral coefficient and differential coefficient of the PID controller.

[0075] In an embodiment of the present invention, the optimization target and constraint conditions are determined, which provides a clear direction and boundary for subsequent algorithm optimization. This helps to ensure that the optimization process is carried out within a reasonable parameter space and avoids invalid or inefficient searches. These settings can ensure that the simulated annealing algorithm reaches a balance between global search and local search. By reasonably adjusting these parameters, the probability of the algorithm finding the global optimal solution can be increased while avoiding falling into the local optimum too early. Random initialization parameters increase the diversity of the search and help the algorithm explore possible solutions in a global scope. This method helps to avoid the algorithm from being trapped in a specific local optimal area from the beginning. By continuously calculating and adjusting the objective function value, the algorithm can gradually approach the optimal solution. The iterative optimization process ensures that the algorithm can find a better combination of parameters in continuous attempts and improvements, thereby improving the performance of the system. Performing multiple iterations at each temperature helps the algorithm to fully search in the solution space corresponding to the current temperature. By continuously generating new solutions and evaluating their objective function values, the algorithm can find the optimal solution or approximate optimal solution at the temperature. The Metropolis criterion allows the algorithm to accept a poor solution with a certain probability, which helps the algorithm to jump out of the local optimum and continue to explore other possible better solutions. This strategy increases the flexibility and global search capability of the algorithm. The gradual decrease in temperature allows the algorithm to gradually focus on a better solution area during the search process. By repeating the iteration and temperature drop process, the algorithm can fully search at different temperature levels to find the global optimal solution or approximate optimal solution. Applying the optimized parameters to the actual system can ensure that the permanent magnet synchronous generator and PID controller operate in the best state. This helps to improve the performance, stability and response speed of the system. The parameters optimized by the simulated annealing algorithm are the optimal or approximate optimal parameters that have been globally searched and verified. Setting these parameters as the initial values ​​of the permanent magnet synchronous generator and PID controller can ensure that the system operates in an efficient and stable state from the beginning, thereby improving the performance and economic benefits of the entire power system.

[0076] In the embodiment of the present invention, the calculation formula of the objective function value is:

[0077]

[0078] Where J represents the value of the objective function; w1, w2 and w3 are weight coefficients; represents the integral of the absolute value of the rate of change of the output data y(t) from time 0 to time t2; |y(t)-y final | indicates that at any time t, the output data y(t) and the final steady-state value y final The deviation between -λt dt is a decay factor; λ is the decay rate; It represents the average value of the absolute error between the input data r(t) and the output data y(t) within a period T of the input signal.

[0079] In an embodiment of the present invention, the objective function not only focuses on the transient response of the system (reflected by the rate of change and the deviation term), but also takes into account the steady-state performance (reflected by the average error within the cycle). This comprehensive evaluation method helps to more accurately reflect the overall performance of the system. By adjusting the weight coefficients w1, w2, and w3, the degree of emphasis of the objective function on different performance indicators can be flexibly adjusted. This allows the performance evaluation criteria to be customized according to different application requirements or system characteristics. Using this objective function as the basis for an optimization algorithm (such as a simulated annealing algorithm) can help find control parameters that can minimize the objective function value. This in turn optimizes the control strategy of the system and improves the dynamic performance and steady-state accuracy of the system. By introducing the attenuation factor e -λt dt, the objective function can pay more attention to the initial stage of system response and gradually reduce the attention to the later steady-state error. This meets the needs of many practical systems, because in the early stage of system startup or adjustment, it is often more important to reach a steady state quickly and smoothly. By minimizing the average error between input and output, the objective function helps improve the system's ability to track the input signal, thereby enhancing the system's robustness and anti-interference ability.

[0080] In an embodiment of the present invention, a sensor is used to continuously monitor the load condition of the permanent magnet synchronous generator, and load current, voltage and power factor are collected in real time, including:

[0081] Configure the sensor to collect data at a set sampling frequency to obtain load current and voltage data;

[0082] transmitting load current and voltage data to a data processing unit via wireless communication;

[0083] The data processing unit preprocesses the original load current and voltage data to obtain preprocessed load current and voltage data;

[0084] The pre-processed load current and voltage data are used to calculate the effective value of the load current, the effective value of the voltage and the power factor in real time. The power factor is calculated by the phase difference between the load current and voltage.

[0085] In an embodiment of the present invention, by configuring the sensor to collect data at a set sampling frequency, the real-time and accuracy of the load current and voltage data can be ensured. This continuous monitoring provides timely information feedback for the operating status of the generator. The use of wireless communication to transmit the load current and voltage data to the data processing unit not only improves the efficiency of data transmission, but also reduces the wiring complexity and maintenance cost. This method makes data acquisition more flexible and convenient. The data processing unit preprocesses the original load current and voltage data, which can effectively remove noise and abnormal values ​​and improve the quality and reliability of the data. The preprocessed data can more truly reflect the actual operating status of the generator. Using the preprocessed load current and voltage data, the effective value of the load current, the effective value of the voltage and the power factor are calculated in real time, providing the operator with real-time indicators of the operating status of the generator. These indicators help to discover potential problems in time and prevent failures. The power factor is calculated by the phase difference between the load current and voltage. This method can accurately reflect the energy efficiency of the generator. The power factor is an important indicator for measuring the efficiency of electrical equipment. Its real-time monitoring helps to optimize the operating efficiency of the generator and reduce energy consumption. By continuously monitoring the load current, voltage and power factor, early warning can be provided for possible faults of the generator. This helps operators take timely measures to prevent the fault from expanding and ensure the stable operation of the generator.

[0086] In an embodiment of the present invention, the load current, voltage and power factor are compared with preset safe operation thresholds. If a sudden change exceeding the threshold is detected, an alarm is triggered; in response, a PID controller is activated to switch from a standby state to a working state, including:

[0087] Set corresponding safe operation thresholds for load current, voltage and power factor respectively;

[0088] The data processing unit continuously compares the real-time collected load current, voltage and power factor data with the preset safe operation thresholds;

[0089] If it is detected that a parameter exceeds the safe operation threshold or undergoes a sudden change, the data processing unit triggers an alarm;

[0090] In response to the alarm, the data processing unit sends an activation signal to the PID controller to switch it from the standby state to the operating state.

[0091] In an embodiment of the present invention, by continuously comparing the real-time collected load current, voltage and power factor data with the preset safe operation threshold, the system can immediately trigger an alarm when the parameters are abnormal or suddenly changed. This timely early warning mechanism helps operators to respond quickly, prevent the occurrence of potential faults or mitigate their effects. Setting safe operation thresholds and ensuring that load parameters operate within these thresholds significantly improves the operating safety of the permanent magnet synchronous generator. Once an over-threshold situation is detected, the system can take measures quickly to prevent equipment damage or accidents. After the alarm is triggered, the data processing unit sends an activation signal to the PID controller to quickly switch it from standby to working state. This fast response mechanism ensures that the PID controller can make adjustments to abnormal conditions in the shortest time, thereby maintaining the stability and performance of the system. The automated threshold comparison and alarm triggering process reduces the need for manual monitoring and intervention. This not only reduces the burden on operators, but also improves the system's autonomous operation capability and response speed. By promptly discovering and handling abnormal conditions, this process helps to reduce the operating time of the equipment under adverse conditions, thereby reducing the risk of wear and failure and extending the service life of the permanent magnet synchronous generator.

[0092] In the embodiment of the present invention, the PID controller calculates the adjustment amount through the operations of proportion, integration and differentiation according to the deviation between the collected real-time data and the set value, including:

[0093] The controller multiplies the deviation value by the proportional coefficient to obtain the proportional adjustment amount;

[0094] The controller performs an integral operation on the deviation value, and then multiplies it by the integral coefficient to obtain the integral adjustment amount;

[0095] The controller calculates the rate of change of the deviation value, multiplies it by the differential coefficient, and obtains the differential adjustment amount;

[0096] The PID controller adds the proportional regulation, integral regulation and differential regulation to obtain the total regulation.

[0097] In an embodiment of the present invention, the PID controller can more accurately calculate the required adjustment amount by comprehensively considering the three aspects of the deviation, namely, the proportion, integration and differentiation. This precise control helps the system reach the set value more quickly and reduces the overshoot and steady-state error. The proportional link can quickly reflect the size of the deviation, so that the controller can quickly make preliminary adjustments. This fast response characteristic is crucial for systems that need to be adjusted quickly, and can effectively shorten the time required for the system to reach a stable state. The integral link can gradually eliminate the steady-state error of the system by accumulating the deviation. This means that even in the presence of external interference or changes in system parameters, the PID controller can eventually stabilize the system near the set value. The differential link can predict the future change trend of the system by calculating the rate of change of the deviation. This enables the controller to make adjustments in advance, reduce the overshoot and oscillation of the system, and improve the stability of the system. The three links (proportional, integral, and differential) of the PID controller all have corresponding coefficients available for adjustment. This enables the controller to adapt to different system characteristics and control requirements, and optimize the control effect by adjusting the coefficients.

[0098] In an embodiment of the present invention, the excitation current of the permanent magnet synchronous generator is dynamically adjusted according to the adjustment amount, and the output power of the generator is adjusted according to the real-time demand of the power system, including:

[0099] Sending the total adjustment amount to the generator control system;

[0100] The motor control system resolves the total regulation amount into the corresponding excitation current adjustment value;

[0101] According to the excitation current adjustment value, the dynamic adjustment of the excitation current is achieved by adjusting the current value in the excitation circuit.

[0102] In the embodiment of the present invention, by dynamically adjusting the excitation current, it is possible to ensure that the generator can maintain the best operating state under different load conditions. This adjustment helps to reduce the loss of the generator and improve its efficiency and performance. Adjusting the output power of the generator according to the real-time demand of the power system helps to maintain the stability of the power grid and the reliability of power supply. Increasing the output during peak demand and reducing the output during low demand can achieve a balance between supply and demand.

[0103] like Figure 2 As shown, a permanent magnet synchronous generator coordinated control system based on load mutation includes:

[0104] Configuration module, used to initialize the permanent magnet synchronous generator, including determining its initial excitation current and target output voltage and frequency; configuring key parameters of the PID controller, including proportional coefficient, integral coefficient and differential coefficient;

[0105] The acquisition module is used to continuously monitor the load condition of the permanent magnet synchronous generator using sensors and collect the load current, voltage and power factor in real time;

[0106] The detection module is used to compare the load current, voltage and power factor with the preset safe operation threshold. If a sudden change beyond the threshold is detected, an alarm is triggered; in response, the PID controller is activated to switch from standby mode to working mode;

[0107] The calculation module is used for the PID controller to calculate the adjustment amount through the operations of proportion, integration and differentiation according to the deviation between the collected real-time data and the set value;

[0108] The adjustment module is used to dynamically adjust the excitation current of the permanent magnet synchronous generator according to the adjustment amount, and adjust the output power of the generator according to the real-time needs of the power system.

[0109] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A method for coordinated control of a permanent magnet synchronous generator based on load mutation, characterized in that: include: Initialize the permanent magnet synchronous generator, including determining its initial excitation current and target output voltage and frequency; Configure the key parameters of the PID controller, including the proportional coefficient, integral coefficient, and differential coefficient; Use sensors to continuously monitor the load condition of the permanent magnet synchronous generator and collect load current, voltage and power factor in real time; Compare the load current, voltage and power factor with the preset safe operation thresholds. If a sudden change beyond the threshold is detected, an alarm is triggered. In response, the PID controller is activated to switch from a standby state to an operating state; The PID controller calculates the adjustment amount through the three operations of proportion, integration and differentiation according to the deviation between the collected real-time data and the set value; According to the regulation amount, the excitation current of the permanent magnet synchronous generator is dynamically adjusted, and the output power of the generator is adjusted according to the real-time needs of the power system.

2. The method for coordinated control of a permanent magnet synchronous generator based on load mutation according to claim 1 is characterized in that: Initialize the permanent magnet synchronous generator, including determining its initial excitation current and target output voltage and frequency; configure the key parameters of the PID controller, including the proportional coefficient, integral coefficient and differential coefficient, including: Determine the optimization goal and variable range; set the starting temperature of the simulated annealing algorithm, determine the temperature drop ratio in each iteration step, the stop temperature, and the number of iterations at each temperature; A set of initial parameters is randomly generated as the current solution, and the initial parameters include initial excitation current, target output voltage and frequency, and PID parameters; Calculate the objective function value of the current solution and iterate the optimization, including: At the current temperature, perform L iterations. In each iteration, generate a new solution in the neighborhood of the current solution and calculate the objective function value of the new solution. Decide whether to accept the new solution based on the Metropolis criterion. After completing the inner loop, reduce the current temperature based on the temperature drop rate. Repeat the inner loop and temperature drop process until the termination temperature is reached to obtain the optimized parameter combination. The permanent magnet synchronous generator is initialized and the PID controller is configured using the optimized parameter combination; the optimized parameters obtained by the simulated annealing algorithm are set as the initial excitation current, target output voltage and frequency of the permanent magnet synchronous generator, as well as the proportional coefficient, integral coefficient and differential coefficient of the PID controller.

3. The coordinated control method of a permanent magnet synchronous generator based on load mutation according to claim 2 is characterized in that: The calculation formula of the objective function value is: Where J represents the value of the objective function; w1, w2 and w3 are weight coefficients; represents the integral of the absolute value of the rate of change of the output data y(t) from time 0 to time t2; |y(t)-y final | indicates that at any time t, the output data y(t) and the final steady-state value y final The deviation between -λt dt is a decay factor; λ is the decay rate; It represents the average value of the absolute error between the input data r(t) and the output data y(t) within a period T of the input signal.

4. The method for coordinated control of a permanent magnet synchronous generator based on load mutation according to claim 3 is characterized in that: Sensors are used to continuously monitor the load of the permanent magnet synchronous generator and collect load current, voltage and power factor in real time, including: Configure the sensor to collect data at a set sampling frequency to obtain load current and voltage data; transmitting load current and voltage data to a data processing unit via wireless communication; The data processing unit preprocesses the original load current and voltage data to obtain preprocessed load current and voltage data; The pre-processed load current and voltage data are used to calculate the effective value of the load current, the effective value of the voltage and the power factor in real time. The power factor is calculated by the phase difference between the load current and voltage.

5. The method for coordinated control of a permanent magnet synchronous generator based on load mutation according to claim 4 is characterized in that: Compare the load current, voltage and power factor with the preset safe operation thresholds. If a sudden change beyond the threshold is detected, an alarm is triggered. In response, the PID controller is activated and switched from standby to operating state, including: Set corresponding safe operation thresholds for load current, voltage and power factor respectively; The data processing unit continuously compares the real-time collected load current, voltage and power factor data with the preset safe operation thresholds; If it is detected that a parameter exceeds the safe operation threshold or undergoes a sudden change, the data processing unit triggers an alarm; In response to the alarm, the data processing unit sends an activation signal to the PID controller to switch it from the standby state to the operating state.

6. The method for coordinated control of a permanent magnet synchronous generator based on load mutation according to claim 5 is characterized in that: The PID controller calculates the adjustment amount based on the deviation between the collected real-time data and the set value through the operations of proportion, integration and differentiation, including: The controller multiplies the deviation value by the proportional coefficient to obtain the proportional adjustment amount; The controller performs an integral operation on the deviation value, and then multiplies it by the integral coefficient to obtain the integral adjustment amount; The controller calculates the rate of change of the deviation value, multiplies it by the differential coefficient, and obtains the differential adjustment amount; The PID controller adds the proportional regulation, integral regulation and differential regulation to obtain the total regulation.

7. The method for coordinated control of a permanent magnet synchronous generator based on load mutation according to claim 6 is characterized in that: According to the regulation amount, the excitation current of the permanent magnet synchronous generator is dynamically adjusted, and the output power of the generator is adjusted according to the real-time needs of the power system, including: Sending the total adjustment amount to the generator control system; The motor control system resolves the total regulation amount into the corresponding excitation current adjustment value; According to the excitation current adjustment value, the dynamic adjustment of the excitation current is achieved by adjusting the current value in the excitation circuit.

8. A permanent magnet synchronous generator coordinated control system based on load mutation, characterized in that: The system is used to perform the method according to any one of claims 1 to 7, comprising: Configuration module, used to initialize the permanent magnet synchronous generator, including determining its initial excitation current and target output voltage and frequency; configuring key parameters of the PID controller, including proportional coefficient, integral coefficient and differential coefficient; The acquisition module is used to continuously monitor the load condition of the permanent magnet synchronous generator using sensors and collect the load current, voltage and power factor in real time; The detection module is used to compare the load current, voltage and power factor with the preset safe operation threshold. If a sudden change beyond the threshold is detected, an alarm is triggered; in response, the PID controller is activated to switch from standby mode to working mode; The calculation module is used for the PID controller to calculate the adjustment amount through the operations of proportion, integration and differentiation according to the deviation between the collected real-time data and the set value; The adjustment module is used to dynamically adjust the excitation current of the permanent magnet synchronous generator according to the adjustment amount, and adjust the output power of the generator according to the real-time needs of the power system.

9. A computing device, characterized in that include: one or more processors; A storage device for storing one or more programs, when the one or more programs are executed by the one or more processors, the one or more processors implement the method as claimed in any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that: The computer-readable storage medium stores a program, which, when executed by a processor, implements the method according to any one of claims 1 to 7.

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