A real-time control system and method for integrated wind, solar, thermal power and energy storage

Abstract

The present invention provides a real-time control system and method for integrated wind-solar-thermal-energy storage, which receives the AGC commands of the power grid and the operating parameters of each power generation unit in real time through a comprehensive controller, calculates the deviation power, and then based on a hierarchical compensation strategy, dynamically adjusts the total power through the primary compensation of new energy units and the secondary compensation of energy storage units in sequence. Among them, the thermal power unit has a double-loop control architecture. During the execution of the hierarchical compensation strategy, the basic power is adjusted within the safe operating range by restricting the adjustment rate and command tracking. The present invention adopts a hierarchical control strategy of primary compensation of new energy units and secondary compensation of energy storage units. By dynamically allocating the power adjustment tasks, the system response speed is improved, and the power deviation is compensated in a short time; the thermal power unit adopts a double-loop control architecture. By restricting the adjustment rate and command tracking, it is ensured that the thermal power unit still operates in the efficient range when the AGC commands fluctuate frequently, avoiding low-load losses and equipment damage.

Description

Technical Field

[0001] The present invention relates to the technical field of control systems and controlled objects in the power generation process, and particularly relates to a real-time control system and method for integrated wind, light, thermal, and energy storage systems. Background Art

[0002] Currently, some thermal power plants have started to independently build photovoltaic and / or wind turbines and configure a certain amount of energy storage units. In this scenario, photovoltaic / wind power and energy storage are all connected at the grid connection point of thermal power. The thermal power plant uniformly receives the Automatic Generation Control (AGC) instruction from the power grid and has the ability to independently allocate power within the plant. Different from the previous model where the dispatching directly controls each unit, it has developed into a new type of power generation entity.

[0003] In the above power generation forms, the load regulation rate of traditional coal-fired units is relatively slow, and the start-up and shutdown times are relatively long. Their operating modes have certain limitations, but their power generation is relatively stable. Photovoltaic and / or wind power generation rely on solar photovoltaic arrays or wind turbines, do not require fuel consumption, have a low power generation cost, and usually use power electronic devices for grid connection, with a fast load regulation speed. However, photovoltaic or wind power generation is affected by the environment, such as irradiance, temperature, wind speed, etc., and has certain volatility. Energy storage units can charge and discharge at any time, but the storage cost is relatively high.

[0004] Therefore, the common application scenarios of the above several types of power generation forms are: receiving power grid dispatching as an integrated system and being freely configured by the power plant internally, that is, integrated wind, light, thermal, and energy storage. In this scenario, the power plant needs to consider both the load response and the power generation economy. Existing integrated control systems often target objects such as integrated energy systems, large new energy bases, and virtual power plants. Although the internal power generation types are similar, their operating modes and power generation goals are different from the new power generation forms. Currently, there is a lack of research on relevant control methods and control systems, making it difficult to meet the actual production needs.

[0005] In summary, there is still a need to propose a real-time control method and system for integrated wind, light, thermal, and energy storage. Summary of the Invention

[0006] In view of the problems existing in the prior art, the present invention provides a system and method with a simple control structure and low operating cost, which can meet the application scenarios of integrated wind, light, thermal, and energy storage.

[0007] To achieve the above object, the technical solution adopted by the present invention is as follows:

[0008] On the one hand, the present invention provides a real-time control method for integrated wind, light, thermal, and energy storage, mainly including the following steps:

[0009] The integrated controller receives the grid AGC command and the operating parameters of each power generation unit in real time, and calculates the deviation power; in calculating the deviation power, the integrated controller calculates the thermal power reference power based on the grid AGC command; the thermal power reference power is sent to the thermal power controller, and the actual thermal power generation is obtained through detection; the actual thermal power generation is sent to the integrated controller, and the deviation power is calculated by the difference comparison method.

[0010] Based on the hierarchical compensation strategy, the total power is dynamically regulated through the primary compensation of the new energy unit and the secondary compensation of the energy storage unit in sequence, for compensating the deviation power.

[0011] The thermal power unit has a double-loop control architecture. During the execution of the hierarchical compensation strategy, the basic power is regulated within the safe operating range by restricting the regulation rate and command tracking.

[0012] Optionally, calculating the deviation power further includes the following steps:

[0013] The integrated controller calculates the new energy reference power based on the grid AGC command.

[0014] Based on the thermal power reference power, the new energy reference power and the actual thermal power generation, calculate the power to be generated by the new energy unit.

[0015] Optionally, there is a total power constraint condition in the total power dynamic regulation, and the formula is:

[0016] ;

[0017] In the formula, is the rated power of the thermal power unit, is the rated power of the new energy unit, is the total power of the grid AGC command;

[0018] The formula for the new energy reference power is:

[0019] ;

[0020] In the formula, is the new energy reference power; is the new energy reference output coefficient, and there is , is the load shedding rate.

[0021] Optionally, the formula for the thermal power reference power is:

[0022] ;

[0023] The double-loop control architecture of the thermal power unit is PI control and PID control. The PI control is used to constrain the regulation rate, and the PID control is used for command tracking.

[0024] Optionally, the steps for adjusting the base power within the safe operating range are as follows:

[0025] Set the constraint conditions for the thermal power unit as:

[0026] ;

[0027] Thermal power unit reference output coefficient The formula is:

[0028] ;

[0029] After inputting the thermal power unit reference output coefficient into the thermal power controller, the PI control is used to constrain the regulation rate, and the constrained thermal power unit reference output coefficient ;

[0030] Solve the current actual output power coefficient of the thermal power unit, and the formula is:

[0031] ;

[0032] In the formula, is the actual power generation of the thermal power; the thermal power unit deviation signal is ;

[0033] After the thermal power unit deviation signal passes through the PID control, the thermal power output coefficient to be output;

[0034] Perform a clipping process on the thermal power output coefficient to be, and the clipping process formula is:

[0035] ;

[0036] In the formula, is the actual output power coefficient of the thermal power unit in the next time period;

[0037] Input the actual output power coefficient of the thermal power unit in the next time period into the thermal power controller.

[0038] Optionally, in the primary compensation of the new energy unit, the following steps are included:

[0039] Calculate the new energy unit compensation coefficient , and the formula is:

[0040] ;

[0041] Calculate the output coefficient of new energy units , the formula is:

[0042] ;

[0043] Perform clipping processing on the output coefficient of the new energy unit, and the clipping processing formula is:

[0044] ;

[0045] In the formula, is the actual power coefficient of the new energy unit; input the actual power coefficient of the new energy unit into the Boost controller of the new energy unit.

[0046] Optionally, in the secondary compensation of the energy storage unit, the following steps are included:

[0047] Calculate the compensation power of the energy storage unit , the formula is:

[0048] ;

[0049] In the formula, is the total power of the grid AGC command, is the actual power generation of thermal power, is the actual power generation of new energy;

[0050] Set the charging or discharging power of the energy storage unit to , and .

[0051] On the other hand, the present invention also provides a real-time control system for integrated wind-solar-thermal-energy storage, which mainly includes a comprehensive controller, a thermal power controller, a new energy controller, and an energy storage controller;

[0052] The comprehensive controller is respectively connected to the grid dispatching system, the thermal power controller, the new energy controller, and the energy storage controller, and the comprehensive controller is also connected to the operation state monitoring devices of the thermal power unit, the new energy unit, and the energy storage unit for collecting the operation parameters of each power generation unit;

[0053] The thermal power controller is integrated in the thermal power control system and is connected to the thermal power unit;

[0054] The new energy controller is integrated in the new energy control system and is connected to the new energy unit;

[0055] The energy storage controller is integrated in the energy storage control system and is connected to the energy storage unit.

[0056] Optionally, a PI controller and a PID controller are integrated in the thermal power control.

[0057] Optionally, a limiting module is also connected in series in the output circuits of the PI controller and the PID controller.

[0058] Compared with the prior art, the present invention has the following beneficial effects:

[0059] Through the hierarchical compensation strategy and the dual-loop thermal power control architecture, the present invention realizes the efficient coordinated control of the integrated wind-solar-thermal energy storage system; adopts the hierarchical control strategy of primary compensation of new energy units and secondary compensation of energy storage units, and through dynamic distribution of power regulation tasks, the system response speed is improved, and the power deviation is compensated in a short time; further, the thermal power unit adopts a dual-loop control architecture, and through restricting the regulation rate and command tracking, it is ensured that the thermal power unit still operates in the efficient range when the AGC command fluctuates frequently, avoiding low-load losses and equipment damage; furthermore, the hierarchical compensation strategy dynamically balances the regulation pressure between new energy and energy storage, maximizes the proportion of new energy power generation on the premise of meeting the grid assessment indicators, and reduces coal consumption and pollutant emissions. BRIEF DESCRIPTION OF THE DRAWINGS

[0060] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0061] Figure 1 It is a flowchart of the control method steps of the present invention;

[0062] Figure 2 It is a general control flowchart of the present invention;

[0063] Figure 3 It is a schematic diagram of the overall structure of the present invention;

[0064] Figure 4 It is a schematic diagram of the structure of the thermal power controller of the present invention;

[0065] Figure 5 It is the power response characteristic curve of the wind / solar power generation unit in the MPPT mode;

[0066] Figure 6 It is the power response characteristic curve using the strategy of the present invention;

[0067] Figure 7 It is a comparison diagram of the total power response characteristic curves of the wind / solar power generation unit in the MPPT mode and under the control conditions using the method of the present invention.

[0068] In the figure: 1 - First input terminal, 2 - PI controller, 3 - Zero-order hold, 4 - PID controller, 5 - Limiting module, 6 - Second input terminal, 7 - Output terminal. Specific embodiments

[0069] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0070] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0071] It is worth noting that the methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products unless otherwise specified, and their sources are not specifically limited.

[0072] It should also be noted that in the specific embodiments of the present invention, for the convenience of understanding, the method steps are described in a certain order. However, those skilled in the art can adjust the order of the steps according to actual needs. Therefore, this cannot be used as a limiting condition. Further, in the following description of the specific embodiments, unless otherwise specified, the upper and lower subscripts of each parameter should be understood as the difference marks of similar identifiers according to common interpretations, representing the parameters of the relevant or corresponding devices of the subscript, and cannot be understood as specific models or special marks.

[0073] On the one hand, as Figure 1 、 2 shown, the present invention provides a real-time control method for integrated wind-solar-thermal energy storage, which mainly includes the following steps:

[0074] The integrated controller receives the grid AGC command and the operating parameters of each power generation unit in real time and calculates the deviation power. Specifically, calculating the deviation power includes the following steps:

[0075] There is a total power constraint condition, and the formula is:

[0076] ;

[0077] In the formula, is the total power of the grid AGC command, is the rated power of the thermal power unit, It is the rated power of the new energy unit.

[0078] The integrated controller calculates the thermal power reference power based on the grid AGC instruction; among them, the thermal power unit reference output coefficient The formula is:

[0079] ;

[0080] Furthermore, in the thermal power controller, the constraints of the thermal power unit are also set as follows:

[0081] ;

[0082] Among them, thermal power reference power The formula is:

[0083] ;

[0084] In the formula, It is the reference power of new energy.

[0085] The thermal power reference power is sent to the thermal power controller, and the actual thermal power generation power is obtained through detection. The actual thermal power generation power is sent to the integrated controller, and the deviation power is calculated by the difference comparison method.

[0086] Synchronously, the integrated controller also calculates the reference power of renewable energy based on the AGC command of the power grid. The formula for the reference power of renewable energy is:

[0087] ;

[0088] In the formula, is the reference output coefficient of new energy, and , is the load shedding rate. In a preferred embodiment, the new energy generator set is a photovoltaic generator set, and the idea of load shedding control is adopted: if the photovoltaic generator set should generate power of; ; In the formula, This design, by replacing the rated power with the maximum power under a specific scenario, not only takes into account the adjustment speed, but also can adjust the real-time accuracy and power generation economy, and cooperates with It can be flexibly set according to empirical values, which determines whether the adjustment margin and output of the photovoltaic group conform to the idea of a better solution.

[0089] The power that the new energy unit should generate is calculated based on the thermal power reference power, the new energy reference power and the actual thermal power generation power, which is the deviation power.

[0090] Based on the hierarchical compensation strategy, the total power is dynamically adjusted through the primary compensation of the new energy unit and the secondary compensation of the energy storage unit in turn to compensate for the deviation power.

[0091] Among them, the new energy unit of the present invention is a wind power generation unit and / or a photovoltaic power generation unit. In the primary compensation of the new energy unit, the following steps are included:

[0092] Calculate the compensation coefficient of the new energy unit , and the formula is:

[0093] ;

[0094] In the formula, is the actual power generation of thermal power.

[0095] Calculate the output coefficient that the new energy unit should have , and the formula is:

[0096] ;

[0097] Perform amplitude limiting processing on the output coefficient that the new energy unit should have. The amplitude limiting processing formula is:

[0098] ;

[0099] In the formula, is the actual power generation coefficient of the new energy unit; input the actual power generation coefficient of the new energy unit into the Boost controller of the new energy unit.

[0100] On the basis of the primary compensation, secondary compensation of the energy storage unit is also required to achieve more stable output. Therefore, the following steps are also included:

[0101] Calculate the compensation power of the energy storage unit , and the formula is:

[0102] ;

[0103] In the formula, is the actual power generation of the new energy;

[0104] Thus, set the charging or discharging power of the energy storage unit to , and .

[0105] In the above process, since the thermal power unit provides a relatively large proportion of the power, its power generation is used as the basic power of the power station. In order to stabilize the overall power generation and avoid the impact of dispatching instructions and multi-system complementary power generation on the stability of the basic power, the present invention also designs the thermal power unit with a double-loop control architecture. During the execution of the hierarchical compensation strategy, the basic power is regulated within the safe operating range by restricting the adjustment rate and command tracking.

[0106] Furthermore, the dual-loop control architecture of the thermal power unit is PI control and PID control. PI control is used to constrain the regulation rate, and PID control is used for command tracking. Adjusting the base power within the safe operation range includes the following steps:

[0107] After inputting the reference output coefficient of the thermal power unit into the thermal power controller, the regulation rate is constrained through PI control, and the constrained reference output coefficient of the thermal power unit is obtained ;

[0108] Solve the current actual output power coefficient of the thermal power unit , and the formula is:

[0109] ;

[0110] In the formula, the deviation signal of the thermal power unit is ;

[0111] After the deviation signal of the thermal power unit passes through PID control, the output power coefficient that the thermal power should output is ;

[0112] Perform amplitude limiting processing on the output power coefficient that the thermal power should output, and the amplitude limiting processing formula is:

[0113] ;

[0114] In the formula, is the actual output power coefficient of the thermal power unit in the next time period;

[0115] Input the actual output power coefficient of the thermal power unit in the next time period into the thermal power controller.

[0116] In summary, the thermal power reference power guides the thermal power unit to generate electricity under the processing of the thermal power controller, and the current actual power generation power of the thermal power unit is obtained from the thermal power unit. The actual thermal power generation power is sent to the master controller. The master controller calculates the wind / solar power that should be generated according to the photovoltaic reference power, the thermal power reference power, and the actual thermal power generation power, and sends the wind / solar power that should be generated to the wind / solar power controller. The wind / solar power that should be generated guides the wind / solar power units to generate electricity under the processing of the wind / solar power controller, and the current actual power generation power of the wind / solar power units is obtained from the wind / solar power units and sent back to the master controller. The master controller calculates the power that the energy storage unit should generate according to the AGC total power, the actual power generation power of the wind / solar power units, and the actual power generation power of the thermal power unit, and sends the power that the energy storage unit should generate to the energy storage controller. The energy storage unit fine-tunes the total power generation according to the command of the energy storage controller, making the peak regulation more accurate.

[0117] On the other hand, the present invention also provides a real-time control system for wind-solar-thermal-energy storage integration, which is used to implement the above control method, such as Figure 3As shown, it mainly includes a comprehensive controller, a thermal power controller, a new energy controller, and a energy storage controller.

[0118] Among them, the comprehensive controller receives real-time information such as grid AGC commands, wind / solar power generation, wind / solar power prediction, energy storage status, and thermal power generation in real time. Through the calculation of internal algorithms, it generates thermal power unit control commands, wind / solar unit control commands, and energy storage control commands in real time, and transmits them to the control systems of the corresponding objects respectively to complete real-time control tasks. At the same time, the comprehensive controller generates the overall plant power response based on wind / solar power generation, thermal power generation, and energy storage status, and uploads it to the grid dispatching via RTU. The comprehensive controller is connected to the grid dispatching system, the thermal power controller, the new energy controller, and the energy storage controller respectively, and the comprehensive controller is also connected to the operation status monitoring devices of thermal power units, new energy units, and energy storage units to collect the operation parameters of each power generation unit.

[0119] As Figure 4 shown, the thermal power controller is integrated into the thermal power control system and connected to the thermal power unit. It integrates a PI controller 2 and a PID controller 4. The first input terminal 1 is used to receive the thermal power to be generated. After passing through the PI controller 2, it enters the zero-order hold 3, and then operates with the thermal power actually received and processed at the second input terminal 6, and inputs the operation result into the PID controller 4, and then through the limiter module 5 to the output terminal 7 to obtain the thermal power reference.

[0120] The new energy controller is integrated into the new energy control system and connected to the new energy group; specifically, the wind / solar power controller can be implemented by the PWM generator of the boost boost circuit.

[0121] The energy storage controller is integrated into the energy storage control system and connected to the energy storage unit; specifically, the energy storage controller can be implemented by the PWM generator of the boost / buck buck-boost circuit, and the energy storage unit can be implemented by a hydrogen storage tank or a battery.

[0122] Embodiment 1;

[0123] As described above, the thermal power controller of this embodiment uses 1 PI controller and 1 PID controller. The PID controller, as a conventional controller, adjusts the result according to the difference between the reference power and the actual power, and a limiter module needs to be installed at the output terminal. Among them, the PI controller and the limiter module can be set according to the constraint conditions.

[0124] The constraint conditions specifically include: the regulation speed of the thermal power unit, the minimum operating load of the thermal power unit.

[0125] Verify the architecture and strategy of this embodiment in MATLAB / Simulink software, and define the following scenarios:

[0126] There is an existing 330MW thermal power unit and a 120MW photovoltaic power unit (new energy unit), and the received instructions are as follows:

[0127] The AGC instruction power in the first 30s is 420MW;

[0128] The AGC instruction power suddenly changes to 340MW at the 30th second;

[0129] The AGC instruction power suddenly changes to 370MW at the 40th second;

[0130] The AGC instruction power suddenly changes to 330MW at the 50th second;

[0131] The AGC instruction power suddenly changes to 350MW at the 60th second;

[0132] The AGC instruction power suddenly changes to 345MW at the 80th second;

[0133] Furthermore, during the instruction reception period, the external irradiance fluctuates greatly with time, that is, the photovoltaic output has a numerical fluctuation of more than 5%.

[0134] Thus, Figure 5 It is the power response characteristic curve in the case of adopting the MPPT maximum power tracking mode for the photovoltaic power unit, Figure 6 It is the power response characteristic curve when the output coefficient is set to 0.85 by adopting the strategy and architecture of the present invention.

[0135] Figure 7 It is the response curve of the traditional method and the strategy of the present invention to the AGC instruction. By accumulating the errors of the two methods within these 100s, the relative error within 100s is calculated, that is: relative error Er = (actual power within 100s - AGC instruction power within 100s) / AGC instruction power within 100s. Furthermore, the error of the MPPT mode is calculated as Er1 = 2.35%, and the error of the strategy of the present invention is Er2 = 1.13%.

[0136] According to the simulation results, compared with the traditional MPPT tracking method, the system of this embodiment with the corresponding strategy greatly improves the adjustment accuracy and output stability of the generated power with the instruction.

[0137] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than a limitation on the protection scope of the present invention. Any simple modification or equivalent replacement of the technical solution of the present invention by those of ordinary skill in the art shall not depart from the essence and scope of the technical solution of the present invention.

Claims

1. A real-time control method for integrated wind-solar-thermal energy storage, characterized in that: It includes the following steps: The integrated controller receives the grid AGC command and the operating parameters of each power generation unit in real time, and calculates the deviation power; when calculating the deviation power, the integrated controller calculates the thermal power reference power based on the grid AGC command; Send the thermal power reference power to the thermal power controller, and obtain the actual thermal power generation through detection; the actual thermal power generation is sent to the integrated controller, and the deviation power is calculated by the difference comparison method; Based on the hierarchical compensation strategy, the total power is dynamically regulated through the primary compensation of the new energy unit and the secondary compensation of the energy storage unit in sequence to compensate for the deviation power; The thermal power unit has a double-loop control architecture. During the execution of the hierarchical compensation strategy, the basic power is regulated within the safe operating range by restricting the adjustment rate and instruction tracking; Calculating the deviation power further includes the following steps: The integrated controller calculates the new energy reference power based on the grid AGC command; Calculate the power that should be generated by the new energy unit based on the thermal power reference power, the new energy reference power, and the actual thermal power generation; There is a total power constraint condition in the total power dynamic regulation, and the formula is: ； In the formula, is the rated power of the thermal power unit, is the rated power of the new energy unit, is the total power of the grid AGC command; The formula for the new energy reference power is: ； In the formula, is the new energy reference power; is the new energy reference output coefficient, and , is the load shedding rate; The thermal power reference is calculated as follows: ； The double-loop control architecture of the thermal power unit is PI control and PID control. The PI control is used to restrict the adjustment rate, and the PID control is used for instruction tracking.

2. The real-time control method for integrated wind-solar-thermal energy storage according to claim 1, characterized in that: Adjusting the basic power within the safe operating range includes the following steps: Set the constraint conditions of the thermal power unit as: ； Reference output coefficient of thermal power unit The calculation formula is as follows: ； After inputting the reference output coefficient of the thermal power unit into the thermal power controller, the regulation rate is constrained by the PI control to obtain the constrained reference output coefficient of the thermal power unit ; Solve for the current actual power generation coefficient of the thermal power unit , and the formula is: ； In the formula, is the actual power generation of the thermal power; the deviation signal of the thermal power unit is ; The deviation signal of the thermal power unit outputs the thermal power response coefficient after passing through the PID control ; Perform amplitude limiting processing on the thermal power output coefficient, and the amplitude limiting processing formula is: ； In the formula, is the actual power generation coefficient of the thermal power unit in the next time period; Input the actual power generation coefficient of the thermal power unit in the next time period into the thermal power controller.

3. The real-time control method for integrated wind, light, thermal and energy storage according to claim 2, characterized in that: In the primary compensation of the new energy unit, it includes the following steps: Calculate the compensation coefficient of new energy units , and the formula is: ； Calculate the output coefficient of new energy units , and the formula is: ； Perform amplitude limiting processing on the new energy unit output coefficient, and the amplitude limiting processing formula is: ； In the formula, is the actual power generation coefficient of the new energy unit; the actual power generation coefficient of the new energy unit is input into the Boost controller of the new energy unit.

4. The real-time control method for integrated wind, light, thermal and energy storage according to any one of claims 1-3, characterized in that: In the secondary compensation of the energy storage unit, it includes the following steps: Calculating the compensation power of the energy storage unit , and the formula is: ； Wherein, is the total power of the grid AGC command, is the actual power generation of thermal power, is the actual power generation of new energy; Set the charging or discharging power of the energy storage unit to , and .

5. A real-time control system for integrated wind, solar, thermal power and energy storage, characterized in that: For implementing the real-time control method for integrated wind-solar-thermal energy storage according to any one of claims 1-4; It includes an integrated controller, a thermal power controller, a new energy controller, and an energy storage controller; The integrated controller is respectively connected to the grid dispatching system, the thermal power controller, the new energy controller, and the energy storage controller, and the integrated controller is also connected to the operating status monitoring devices of the thermal power unit, the new energy unit, and the energy storage unit for collecting the operating parameters of each power generation unit; The thermal power controller is integrated in the thermal power control system and is connected to the thermal power unit; The new energy controller is integrated in the new energy control system and is connected to the new energy unit; The energy storage controller is integrated in the energy storage control system and is connected to the energy storage unit; The thermal power controller integrates a PI controller and a PID controller; An amplitude limiting module is also connected in series in the output circuits of the PI controller and the PID controller.

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