Load distribution method and device and electronic equipment

Abstract

The invention discloses a load distribution method and device and electronic equipment. The method comprises the following steps: acquiring operation modes reported by a plurality of power devices connected with a mother pipe in a mother pipe operation system; comparing the operation modes reported by the plurality of power devices to obtain a comparison result; a load distribution strategy corresponding to the comparison result is determined, and the load distribution strategy is at least used for indicating the load capacity distributed to the multiple power devices. The technical problems that a fixed load distribution mode is adopted in the related technology, fluctuation of the equipment combustion working condition in a mother pipe operation system cannot be rapidly responded, the combustion efficiency is low, and the mother pipe pressure stability is poor are solved.

Description

Technical Field

[0001] The present application relates to the field of power systems, and in particular to a method, device and electronic equipment for load distribution. Background Art

[0002] The main pipe operation system is the main thermal system in a thermal power plant. It is the most basic mode of thermal system in a thermal power plant and has become the most widely used thermal system in a thermal power plant. Its characteristics are that the boiler, steam turbine and main steam system are independent of each other, and there is no direct connection of working fluid between the circuits. Instead, they are connected together through the main pipe steam pipe and supply heat to the user's thermal load at the same time. Faced with complex and changeable boiler combustion conditions, the relevant technology adopts a fixed load distribution method, which cannot quickly respond to the fluctuation of the equipment combustion conditions in the main pipe operation system, resulting in low combustion efficiency and poor main pipe pressure stability.

[0003] To address the above-mentioned problems, no effective solution has been proposed yet. Summary of the invention

[0004] The embodiments of the present application provide a method, device and electronic device for load distribution, so as to at least solve the technical problems that the related technology adopts a fixed load distribution method, cannot quickly respond to the fluctuation of the combustion conditions of the equipment in the main pipe control operation system, has low combustion efficiency and poor main pipe pressure stability.

[0005] According to one aspect of an embodiment of the present application, a method for load distribution is provided, including: obtaining operating modes reported by multiple power devices connected to a main pipe in a main pipe control operating system, wherein the operating modes include: a first mode and a second mode, the first mode is to control the power device to output according to a first load value, the first load value is determined based on the working state parameter of the main pipe, and the second mode is to control the power device to output according to a second load value, the second load value is a load value determined based on a preset temperature value; comparing the operating modes reported by multiple power devices to obtain a comparison result, wherein the comparison result includes: the operating modes of the multiple power devices are all the same, and at least some of the operating modes of the multiple power devices are different; determining a load distribution strategy corresponding to the comparison result, wherein the load distribution strategy is at least used to indicate the load amount allocated to the multiple power devices.

[0006] In some embodiments of the present application, a load distribution strategy corresponding to the comparison result is determined, including: when the operating modes of multiple power devices are all the same, calculating the target weights corresponding to the multiple power devices respectively, and using the target weights to distribute the load; when at least some of the operating modes of the multiple power devices are different, calculating the adjustment coefficients corresponding to the multiple power devices respectively, and using the adjustment coefficients to distribute the load, wherein the adjustment coefficients include the target weights corresponding to the power devices when the operating mode is the first mode, and the load correction value of the power devices when the operating mode is the second mode.

[0007] In some embodiments of the present application, the operation mode is the first mode, and when the operation modes of multiple power equipment are all the same, the target weights corresponding to the multiple power equipment are calculated, and the target weights are used to distribute the load, including: obtaining the first total load demand of the main control operation system; calculating the first weights and second weights corresponding to the multiple power equipment, wherein the first weight includes a weight determined based on the positive balance efficiency corresponding to the multiple power equipment, and the second weight includes a weight determined based on the load margin corresponding to the multiple power equipment; determining the target weight corresponding to the first weight and the second weight; performing mathematical operations on the first total load demand and the target weight to obtain the first load distribution corresponding to the multiple power equipment.

[0008] In some embodiments of the present application, the first weight is determined in the following manner: obtaining a first mother pipe pressure value of the mother pipe from the working state parameters of the mother pipe; when the first mother pipe pressure value is less than a first preset pressure value, determining the first weight based on the positive proportional relationship between the weight and the positive balance efficiency; when the first mother pipe pressure value is greater than the first preset pressure value, determining the second weight based on the inverse proportional relationship between the weight and the positive balance efficiency.

[0009] In some embodiments of the present application, the second weight is determined in the following manner: obtaining the load margin corresponding to each of the multiple power equipment, wherein the load margin includes an upper load margin and a lower load margin, the upper load margin is used to indicate the maximum load amount allowed to be increased for the corresponding power equipment, and the lower load margin is used to indicate the maximum load amount allowed to be reduced for the corresponding power equipment; when the upper load margin is less than zero or the lower load margin is less than zero, the second weight of the corresponding power equipment is determined to be zero; when both the upper load margin and the lower load margin are greater than zero, the second weights corresponding to the multiple power equipment are determined according to the second main pipe pressure value of the main pipe.

[0010] In some embodiments of the present application, when the upper load margin and the lower load margin are both greater than zero, the second weights corresponding to the multiple power equipment are determined based on the second main pipe pressure value of the main pipe, including: when the second main pipe pressure value is less than the second preset pressure value, determining that the weight value that is directly proportional to the upper load margin is the second weight; when the second main pipe pressure value is greater than the second preset pressure value, determining that the weight value that is directly proportional to the lower load margin is the second weight.

[0011] In some embodiments of the present application, the load correction value of a power equipment whose operating mode is the second mode is determined by: obtaining a third mother pipe pressure value of the mother pipe from the working state parameter of the mother pipe, and calculating a first difference between the third mother pipe pressure value and a third preset pressure value; determining a preset interval in which the first difference falls, and calculating the load correction value of the power equipment using an adjustment method corresponding to the preset interval, wherein the load correction value is determined based on the temperature correction value of the power equipment.

[0012] In some embodiments of the present application, the preset interval includes: a first preset interval, a second preset interval, a third preset interval and a fourth preset interval, wherein the maximum value of the first preset interval is less than the minimum value of the second preset interval, the maximum value of the second preset interval is less than the minimum value of the third preset interval, and the maximum value of the third preset interval is less than the minimum value of the fourth preset interval; the load correction value of the power equipment is calculated using an adjustment method corresponding to the preset interval, including: when the first difference falls into the first preset interval, the load correction value is determined according to the first temperature correction value, wherein the first temperature correction value includes zero; when the first difference falls into the second preset interval, the load correction value is determined according to the second temperature correction value, wherein the second temperature correction value includes a value determined according to an average load flow of the main pipe operation system; when the first difference falls into the third preset interval, the load correction value is determined according to the third temperature correction value, wherein the third temperature correction value includes a value determined jointly according to the third main pipe pressure value and the average load flow; when the first difference falls into the fourth preset interval, the load correction value is determined according to the fourth temperature correction value, wherein the fourth temperature correction value includes a value determined according to the third main pipe pressure value.

[0013] In some embodiments of the present application, the third temperature correction value is determined by: obtaining a first change trend of the main pipe pressure value of the main pipe and a second change trend of the average load flow, wherein the change trend includes an upward trend and a downward trend; when the first change trend is the same as the second change trend, determining a third temperature correction value corresponding to the third main pipe pressure value and the average load flow.

[0014] In some embodiments of the present application, the fourth temperature correction value is determined in the following manner: obtaining a third change trend of the mother pipe pressure value of the mother pipe, wherein the third change trend includes a continuous rising trend within a preset period and a continuous falling trend within a preset period; when the third change trend is a continuous rising trend or a continuous falling trend, determining the fourth temperature correction value corresponding to the third mother pipe pressure value.

[0015] In some embodiments of the present application, when the operating mode is the second mode and the operating modes of multiple power equipment are all the same, target weights corresponding to the multiple power equipment are determined, wherein the target weights include weights determined based on the positive balance efficiencies corresponding to the multiple power equipment; load distribution is performed using the target weights, including: performing mathematical operations on the target weights and the second total load demand of the main control operating system to obtain second load distribution amounts corresponding to the multiple power equipment.

[0016] In some embodiments of the present application, after using the target weight to distribute the load, the method also includes: executing a weight adjustment step, including: obtaining a second difference between a fourth mother pipe pressure value and a fourth preset pressure value of the mother pipe; when the second difference is greater than the preset pressure difference, adjusting the target weight to the weight of the previous adjustment cycle; after using the adjusted weight to distribute the load, repeating the weight adjustment step until the second difference is less than the preset pressure difference.

[0017] According to another aspect of an embodiment of the present application, a load distribution device is also provided, including: an acquisition module, used to acquire operating modes reported by multiple power devices connected to a main pipe in a main pipe control operating system, wherein the operating modes include: a first mode and a second mode, the first mode is to control the power device to output according to a first load value, the first load value is determined based on the working state parameter of the main pipe, and the second mode is to control the power device to output according to a second load value, the second load value is a load value determined based on a preset temperature value; a comparison module, used to compare the operating modes reported by multiple power devices to obtain a comparison result, wherein the comparison result includes: the operating modes of multiple power devices are all the same, and at least some of the operating modes of multiple power devices are different; a determination module, used to determine a load distribution strategy corresponding to the comparison result, wherein the load distribution strategy is at least used to indicate the load amount allocated to multiple power devices.

[0018] According to another aspect of the embodiment of the present application, there is also provided an electronic device, including: a memory and a processor, the memory being used to store program instructions; the processor being connected to the memory and being used to execute the above-mentioned load distribution method.

[0019] According to another aspect of the embodiments of the present application, a non-volatile storage medium is provided, which includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the above-mentioned load distribution method by running the computer program.

[0020] According to another aspect of the embodiments of the present application, a computer program product is provided, including computer instructions, which implement the above-mentioned load distribution method when executed by a processor.

[0021] In the embodiment of the present application, by dynamically adjusting the load distribution strategy and adopting different load distribution strategies according to the different operating modes of the power equipment in the main tube control operation system, the purpose of coordinating the combustion efficiency of each equipment in the main tube control operation system is achieved, thereby achieving the technical effect of effectively responding to changes in the main tube pressure and the operating state of the power equipment, and ensuring the efficient and stable operation of the system under different operating conditions, thereby solving the technical problems that the related technology adopts a fixed load distribution method, cannot quickly respond to fluctuations in the combustion conditions of equipment in the main tube control operation system, and has low combustion efficiency and poor main tube pressure stability. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] 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. In the drawings:

[0023] Figure 1 It is a hardware structure block diagram of a computer terminal according to a load distribution method of an embodiment of the present application;

[0024] Figure 2 is a flow chart of a method for load distribution according to an embodiment of the present application;

[0025] Figure 3 is a schematic diagram of the overall framework of a load distribution method according to an embodiment of the present application;

[0026] Figure 4 It is a structural schematic diagram of a load distribution device according to an embodiment of the present application. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with 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 this field without creative work should fall within the scope of protection of the present application.

[0028] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0029] In order to better understand the embodiments of the present application, the technical terms involved in the embodiments of the present application are explained as follows:

[0030] OPC communication (OLE for Process Control Communication, referred to as OPC): a standard interface and communication protocol widely used in the field of industrial automation, used to achieve data exchange between different control systems or devices, and improve the interoperability and flexibility of data acquisition and control systems.

[0031] Pressure Regulation Mode for Power Equipment (PRMPE): A control strategy for the operation of power equipment. It dynamically adjusts the fuel quantity or heat input of power equipment (such as coal-fired steam boilers, gas turbines, etc.) to control the steam pressure or thermal output pressure generated by it to meet the pressure set value of the mother pipe system, ensure that the power equipment can adapt to the real-time changes of the external power system or thermal demand, and maintain the stability of the mother pipe pressure.

[0032] Fixed Thermal Output Mode for Power Equipment (FTOMPE): Another control strategy for the operation of power equipment. By fixing the current fuel amount or thermal energy input of the power equipment, the equipment is controlled to operate at a predetermined thermal output level, usually expressed as the temperature of the furnace outlet or the thermal power of the power equipment. This mode is suitable for scenarios with clear requirements for thermal output and relatively stable demand, such as part of the time period in cogeneration or the stable operation requirements of a specific thermal energy supply network, so as to ensure the efficient operation of the power equipment under fixed thermal output and the stability of the overall system.

[0033] At present, most thermal power plants adopt the mother pipe control operation mode, that is, multiple operating boilers supply steam to the same mother pipe at the same time to meet the requirements of steam turbine power generation and heating network heating. This method is called mother pipe control operation. In the related technology, a load distribution method that manually sets fixed weights according to the boiler load margin ratio is usually adopted. However, in the face of complex and changeable boiler combustion conditions, it is impossible to effectively coordinate the load output of each boiler, and it is difficult to fully take into account the boiler's load regulation capacity, multiple boilers coupled and coordinated regulation, and combustion efficiency maximization. In order to solve the above technical problems, the embodiments of the present application provide corresponding solutions, which are described in detail below.

[0034] The load distribution method embodiment provided in the embodiment of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Figure 1 FIG. 1 shows a hardware structure block diagram of a computer terminal for implementing a method for load distribution. Figure 1 As shown, the computer terminal 10 may include one or more (102a, 102b, ..., 102n are used to illustrate) processors (the processor may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 104 for storing data, and a transmission module 106 for communication functions connected via a wired and / or wireless network. In addition, it may also include: a display, a keyboard, a cursor control device, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, and a BUS bus. Those skilled in the art can understand that Figure 1 The structure shown is only for illustration and does not limit the structure of the above electronic device. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0035] It should be noted that the one or more processors and / or other data processing circuits described above may generally be referred to herein as "data processing circuits". The data processing circuits may be embodied in whole or in part as software, hardware, firmware, or any other combination thereof. In addition, the data processing circuit may be a single independent processing module, or may be incorporated in whole or in part into any of the other components in the computer terminal 10. As described in the embodiments of the present application, the data processing circuit acts as a processor control (e.g., selection of a variable resistor terminal path connected to an interface).

[0036] The memory 104 can be used to store software programs and modules of application software, such as program instructions / data storage devices corresponding to the load distribution method in the embodiment of the present application. The processor executes various functional applications and data processing by running the software programs and modules stored in the memory 104, that is, realizing the above-mentioned load distribution method. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor, and these remote memories may be connected to the computer terminal 10 via a network. Examples of the above-mentioned network include, but are not limited to, the Internet, an intranet, a local area network, a mobile communication network, and combinations thereof.

[0037] The transmission module 106 is used to receive or send data via a network. The specific example of the above network may include a wireless network provided by a communication provider of the computer terminal 10. In one example, the transmission module 106 includes a network adapter (Network Interface Controller, NIC), which can be connected to other network devices through a base station so as to communicate with the Internet. In one example, the transmission module 106 can be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0038] The display may be, for example, a touch screen liquid crystal display (LCD) that enables a user to interact with a user interface of the computer terminal 10 .

[0039] It should be noted that, in some optional embodiments, the above Figure 1 The computer terminal shown may include hardware elements (including circuits), software elements (including computer code stored on a computer-readable medium), or a combination of hardware elements and software elements. It should be noted that Figure 1 This is merely one example of a particular embodiment and is intended to illustrate the types of components that may be present in the computer terminal described above.

[0040] In the above-mentioned operating environment, an embodiment of the present application provides an embodiment of a method for load distribution. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer executable instructions, and although the logical order is shown in the flowchart, in some cases, the steps shown or described can be executed in an order different from that shown here.

[0041] Figure 2 is a flow chart of a load distribution method according to an embodiment of the present application. Figure 2As shown, the method comprises the following steps:

[0042] Step S202, obtaining the operating modes reported by multiple power devices connected to the main pipe in the main pipe control operating system, wherein the operating modes include: a first mode and a second mode, the first mode is to control the power device to output according to a first load value, the first load value is determined based on the working state parameters of the main pipe, and the second mode is to control the power device to output according to a second load value, the second load value is a load value determined based on a pre-set temperature value.

[0043] In the above step S202, the main pipe operation system refers to a system that collects the outputs of multiple power equipment (such as coal-fired steam boilers, gas turbines, etc.), uniformly controls and distributes them to the main pipe to meet the thermal energy demand of the entire power system or thermal network. Power equipment refers to equipment that can generate energy output (such as steam, electricity). The operation mode refers to the control strategy adopted when the power equipment is running, and according to different goals and needs, it can include voltage regulation mode (first mode), constant heat mode (second mode), etc.

[0044] In the first mode, the operation control strategy of the power equipment is to dynamically adjust the load value of its output according to the working state parameters of the mother pipe system. The working state parameters of the mother pipe may include the mother pipe pressure, the overall thermal energy demand of the system, etc. The first load value can be calculated based on the deviation between the current mother pipe pressure and the set value, combined with the adjustment ability of the power equipment. For example, when the mother pipe pressure is lower than the set value (the downstream demand load increases), it is determined that the power equipment needs to increase the amount of fuel and increase the steam production.

[0045] In the second mode, the operation control strategy of the power equipment is to determine the load value of its output according to the set temperature value. In this mode, the amount of fuel or heat source input of the power equipment is fixed to ensure that the heat energy output by it remains near the preset temperature value. The second load value can be determined by the thermal efficiency and / or capacity of the equipment at a specific temperature. Thermal efficiency refers to the efficiency of the power equipment in converting the thermal energy of the fuel into useful work (such as electrical energy, mechanical energy, etc.). At a specific temperature, the maximum thermal efficiency of the power equipment means that the use of fuel is more efficient and the loss in the energy conversion process is minimal. Therefore, when determining the second load value, the maximum thermal efficiency of the equipment at this temperature can be considered to ensure the optimization of fuel use; capacity refers to the energy that the power equipment can generate per unit time, which depends on the scale, design and operating status of the equipment. In the second mode, the fixed amount of fuel or heat source input means that the capacity is basically determined, so the second load value can be matched with the fixed capacity to ensure that the equipment can stably output the required heat energy. The second mode is suitable for scenarios where stable thermal energy output needs to be maintained, for example, during certain periods of cogeneration, or in sections of industrial production lines that have strict requirements on thermal energy parameters. By controlling the amount of fuel or heat source input to the equipment, the power equipment can be stabilized at a certain temperature value, thereby maximizing its thermal efficiency at that temperature, achieving economical operation of the equipment and reducing energy waste.

[0046] In some embodiments of the present application, the corresponding operating mode can be identified based on the state of the power equipment, that is, the current state parameters of each power equipment (such as fuel quantity, steam flow, temperature, etc.) can be automatically detected, and based on the preset rule base, it can be identified whether the equipment is currently in the pressure regulation mode or the constant heat mode. For example, if it is detected that the fuel quantity of the equipment is frequently adjusted (such as by adjusting the time interval or the adjustment amplitude) in response to the change of the mother pipe pressure, it can be judged that the equipment is in the pressure regulation mode (the first mode); the manually input operating mode information of the target object can also be obtained.

[0047] In some embodiments of the present application, the operation mode of the power equipment can be dynamically allocated based on a preset algorithm, that is, the operation mode of each power equipment is dynamically allocated according to one or more parameters such as real-time system load forecast, mother pipe pressure trend, fuel efficiency of the power equipment, and equipment availability. For example, at night when there is low load demand, the control system can automatically switch multiple boilers to a fixed heat mode (second mode) to reduce fuel consumption and maintain the thermal efficiency of the equipment.

[0048] In some embodiments of the present application, by collecting real-time system load forecasts (i.e., predicting electricity demand within a future period based on historical load analysis) and calculating the fuel efficiency of the power equipment, the operating mode of the power equipment can be dynamically allocated using the output results of a preset algorithm (such as a machine learning model). For example, when it is predicted that the load demand will increase within a preset period of time in the future, a preset number of power equipment with high fuel efficiency can be switched to the voltage regulation mode (first mode).

[0049] Step S204, comparing the operating modes reported by the multiple power devices to obtain a comparison result, wherein the comparison result includes: the operating modes of the multiple power devices are all the same, and at least some of the operating modes of the multiple power devices are different.

[0050] In the above step S204, when the comparison result is that the operating modes of multiple power devices are all the same, that is, all power devices connected to the mother pipe are currently operating in the same mode, for example, all are in the voltage regulation operation mode, and all are in the constant heat operation mode.

[0051] When all power equipment are in the pressure regulating operation mode (first mode), it indicates that the main pipe control operation system is currently committed to quickly responding to changes in the main pipe pressure to adapt to the dynamic needs of the external load. In some embodiments of the present application, the preset weight can be calculated according to the positive balance efficiency of each boiler, and the fuel amount of the boiler with higher efficiency is increased first when the load is increased, and the fuel amount of the boiler with lower efficiency is reduced first when the load is reduced, so as to improve the overall economy.

[0052] When all power equipment are in constant heat operation mode (second mode), in some embodiments of the present application, the load distribution of each boiler can be dynamically adjusted according to the heat load margin and combustion efficiency of each boiler to balance the heat energy output within the system while optimizing the overall operating efficiency.

[0053] When the comparison result shows that at least some of the operation modes of the multiple power equipment are different, for example, there are both pressure regulating operation and constant heat operation modes in the system, indicating that the system needs to meet the requirements of dynamic load demand and constant temperature output at the same time. In some embodiments of the present application, the load adjustment amount can be calculated for the power equipment in the pressure regulating mode according to the main pipe pressure deviation, while considering the equipment efficiency. For example, the main pipe pressure deviation is used as input, combined with the equipment efficiency model (such as a model that takes the physical limitations of the equipment as constraints), to calculate the load amount that needs to be adjusted, which usually involves solving an optimization problem to minimize energy consumption or cost while meeting the pressure requirements; for the equipment in the constant heat mode, its temperature setting value is maintained unchanged, and the heat load of the constant heat equipment is indirectly adjusted by changing the pressure regulating equipment only when necessary. In an optional embodiment, a model predictive control algorithm can be used to realize dynamic load adjustment, that is, to predict the changes in the main pipe pressure and heat load demand in the future period of time, and adjust the operating parameters of the pressure regulating equipment in advance, and the constant heat equipment adjusts its temperature setting value or output upper limit through an intelligent algorithm when the demand change is predicted to assist the pressure regulating equipment in stabilizing the system.

[0054] Step S206: determining a load distribution strategy corresponding to the comparison result, wherein the load distribution strategy is at least used to indicate the load amount distributed to the plurality of power equipments.

[0055] In the above step S206, the load distribution strategy refers to a set of instructions for guiding the adjustment of the fuel quantity or energy input of the power equipment. For example, it may include the following instructions:

[0056] (1) Boiler load adjustment command: Based on the comprehensive weight calculation results, a command to adjust the fuel quantity is sent to the DCS system of each boiler to dynamically adjust the boiler load. For example, increase the fuel supply to increase steam production, or reduce the fuel supply to reduce the load, depending on the comparison result between the main pipe pressure and the set value.

[0057] (2) Steam flow control instructions: For some boilers, the control strategy may involve the adjustment of steam flow to ensure the balance between steam supply and demand to achieve stable main pipe pressure.

[0058] (3) Temperature set point update command: For boilers operating in fixed heat mode, the system can send a command to update the furnace outlet temperature set point to adjust the boiler's fixed load output in response to changes in the main pipe pressure.

[0059] (4) Pressure deviation response command: When the deviation between the main pipe pressure and the set value exceeds the preset range, the system can generate a command to require the pressure regulating boiler to respond quickly and adjust the fuel amount or steam flow to quickly correct the pressure deviation.

[0060] (5) Weight rollback instruction: During the main pipe pressure regulation process, if the deviation between the actual pressure and the set value continues to exceed the allowable range, the system can send a weight rollback instruction, which requires each boiler to temporarily return to the preset weight of the previous cycle to avoid system instability caused by excessive adjustment.

[0061] In order to be able to flexibly respond to the differences in operating modes of different power equipment and ensure the stable operation of the main control operation system under complex working conditions, the following load distribution strategy can be adopted: when the operating modes of multiple power equipment are all the same, calculate the target weights corresponding to the multiple power equipment respectively, and use the target weights to distribute the load; when at least some of the operating modes of the multiple power equipment are different, calculate the adjustment coefficients corresponding to the multiple power equipment respectively, and use the adjustment coefficients to distribute the load, wherein the adjustment coefficients include the target weights corresponding to the power equipment when the operating mode is the first mode, and the load correction value of the power equipment when the operating mode is the second mode.

[0062] The target weight refers to the value used to determine the proportion of load adjustment that each device should share when all power equipment operates in the same mode. The adjustment coefficient refers to a specific set of values ​​used to guide load distribution when there are differences in the operating modes of power equipment, including the target weight of equipment in the first mode (voltage regulation operation) and the load correction value of equipment in the second mode (constant heat operation), which is used to reflect the dynamic changes in the requirements for equipment to participate in load adjustment under different operating modes.

[0063] When the operating modes of all power equipment are the first mode, more refined load distribution can be achieved by considering the efficiency and load margin of the equipment to avoid equipment overload or inefficiency. Specifically: obtain the first total load demand of the main control operation system; calculate the first weight and the second weight corresponding to the multiple power equipment respectively, wherein the first weight includes the weight determined according to the positive balance efficiency corresponding to the multiple power equipment respectively, and the second weight includes the weight determined according to the load margin corresponding to the multiple power equipment respectively; determine the target weight corresponding to the first weight and the second weight; perform mathematical operation on the first total load demand and the target weight to obtain the first load distribution corresponding to the multiple power equipment respectively.

[0064] The first total load demand refers to the total load adjustment that needs to be met by all power equipment within a preset period. It can be calculated through an incremental PID (Proportional Integral Derivative) control algorithm based on the deviation between the current pressure state of the mother pipe and the set value, or it can be estimated through a prediction model.

[0065] The first weight (efficiency weight) refers to the weight calculated according to the positive balance efficiency corresponding to the multiple power equipments, reflecting the efficiency of each equipment in meeting the load demand. In some embodiments of the present application, the first weight can be determined by: obtaining the first mother pipe pressure value of the mother pipe from the working state parameter of the mother pipe; when the first mother pipe pressure value is less than the first preset pressure value, the first weight is determined according to the positive proportional relationship between the weight and the positive balance efficiency; when the first mother pipe pressure value is greater than the first preset pressure value, the second weight is determined according to the inverse proportional relationship between the weight and the positive balance efficiency.

[0066] In order to facilitate understanding of the calculation process of the first weight, an explanation is given below in conjunction with a specific embodiment:

[0067] (1) Obtaining the operating parameters of each boiler: obtaining the main steam flow, main steam temperature, main steam pressure, feed water temperature, feed water pressure, coal flow, and low calorific value of the coal entering the furnace of each boiler. The low calorific value of the coal entering the furnace can be automatically detected online or manually analyzed and tested regularly.

[0068] (2) Calculate the outlet steam enthalpy of each boiler and the enthalpy of make-up water through the operating parameters: Calculate the outlet steam enthalpy of each boiler using the water vapor thermodynamic property calculation formula IAPWS-IF97 method And the enthalpy of water feeding into the drum of each boiler

[0069] (3) Calculate the energy input of the boiler within a preset time (e.g. 1 hour) Energy Output and positive equilibrium efficiency (α i ):

[0070] Calculate the energy input of boiler i using the formula:

[0071]

[0072] in, is the energy input of the boiler at time t0~t1, LHV t is the low calorific value of the coal entering the furnace at time t, unit: KJ / Kg, The average low calorific value of the coal entering the furnace from t0 to t1, unit: KJ / Kg; It is the total amount of coal entering boiler i at time t, unit: Kg / h.

[0073] Calculate the energy output of boiler i using the following formula:

[0074]

[0075] in, is the energy output of the boiler from t0 to t1, is the total steam output of boiler i at time t, unit: Kg / h, is the outlet steam enthalpy of boiler i at time t, is the enthalpy of water entering the steam drum of boiler i at time t.

[0076] Calculate the positive balance efficiency of boiler i, the calculation formula is:

[0077]

[0078] Among them, α i is the positive balance efficiency.

[0079] (4) Calculate the first weight: Calculate the first weight based on the external load changes and the load margin of each boiler.

[0080] When the main pipe pressure drops (the first main pipe pressure is less than the first preset pressure value), that is, the downstream demand load increases, the first weight assigned to the i-th boiler is:

[0081]

[0082] in, is the first weight of the i-th boiler, is the positive equilibrium efficiency and of all boilers, and n is the number of boilers.

[0083] When the main pipe pressure rises (the first main pipe pressure is greater than the first preset pressure value), that is, the downstream demand load decreases, the first weight assigned to the i-th boiler is:

[0084]

[0085] The sum of the first weights assigned to all boilers is 1, that is:

[0086]

[0087] Where n is the number of boilers.

[0088] The second weight (load weight) refers to the weight calculated according to the load margin corresponding to multiple power equipments, reflecting the remaining adjustment capacity of each equipment when meeting the load demand.

[0089] In order to avoid the power equipment from running in an extreme state and extend the service life of the power equipment, the second weight can be determined in the following way: obtain the load margin corresponding to multiple power equipment respectively, wherein the load margin includes an upper load margin and a lower load margin, the upper load margin is used to indicate the maximum load amount allowed to be increased for the corresponding power equipment, and the lower load margin is used to indicate the maximum load amount allowed to be reduced for the corresponding power equipment; when the upper load margin is less than zero or the lower load margin is less than zero, determine the second weight of the corresponding power equipment to be zero; when both the upper load margin and the lower load margin are greater than zero, determine the second weights corresponding to the multiple power equipment respectively according to the second main pipe pressure value of the main pipe.

[0090] The load margin is used to reflect the adjustment range of the power equipment under the current working state. The upper load margin refers to the maximum load that the power equipment can increase without exceeding the safe operation limit, which can be determined by the difference between the maximum allowable load of the equipment and the current actual load; the lower load margin refers to the maximum load that the power equipment can reduce while ensuring stable operation, which can be determined by the difference between the current actual load and the minimum allowable load of the equipment.

[0091] When the upper load margin is less than zero, it indicates that the current load of the power equipment has exceeded its maximum allowable load and the load cannot be increased; when the lower load margin is less than zero, it indicates that the current load of the power equipment is lower than its minimum allowable load and the load cannot be reduced. In the case where the upper load margin is less than zero or the lower load margin is less than zero, the second weight can be determined to be zero, indicating that the power equipment will not be assigned the task of increasing the load in the next load adjustment cycle, so as to avoid the load of the power equipment exceeding the safety range, protect the power equipment from damage due to overload, and ensure the safe and stable operation of the system.

[0092] When both the upper and lower load margins are greater than zero, it indicates that the power equipment has a two-way load regulation capability, and the second weights corresponding to the multiple power equipment can be determined according to the main pipe pressure value. Specifically: when the second main pipe pressure value is less than the second preset pressure value, the weight value that is proportional to the upper load margin is determined as the second weight; when the second main pipe pressure value is greater than the second preset pressure value, the weight value that is proportional to the lower load margin is determined as the second weight. This weight determination method can dynamically adjust the load distribution of the equipment according to the change of the main pipe pressure, ensure the stability and economy of the system when the pressure fluctuates, and is suitable for industrial environments that need to cope with rapidly changing working conditions.

[0093] In order to facilitate understanding of the calculation process of the second weight, an explanation is given below in conjunction with a specific embodiment:

[0094] (1) Obtaining operating parameters: Obtaining the current main steam flow of each boiler Main steam flow upper limit And the lower limit of main steam flow

[0095] (2) Calculate the load margin using operating parameters: that is, calculate the load margin of each boiler separately and load margin The calculation formula is:

[0096]

[0097]

[0098] in, is the boiler load margin, is the upper limit of main steam flow rate, The current main steam flow of the boiler, is the margin under load, The lower limit of main steam flow.

[0099] (3) Calculate the second weight: Calculate the second weight W based on the external load changes and the load margin of each boiler. pre_Load .

[0100] If the flow margin of the i-th boiler Less than 0 or the remaining amount under flow is less than 0, then its second weight (W pre_Load ) is 0;

[0101] If the flow margin of the i-th boiler and flow rate margin are both greater than or equal to 0, then:

[0102] When the main pipe pressure drops (the second main pipe pressure value is less than the second preset pressure value), that is, when the downstream demand load increases, the calculation formula for allocating the second weight to the i-th boiler is:

[0103]

[0104] in, is the second weight of boiler i, and n is the number of boilers.

[0105] When the main pipe pressure rises (the second main pipe pressure value is greater than the second preset pressure value), that is, when the downstream demand load decreases, the calculation formula for allocating the second weight to the i'th boiler is:

[0106]

[0107] The sum of the preset load weights assigned to all boilers is 1, that is:

[0108]

[0109] The target weight refers to the final weight used to guide the load distribution of power equipment, which can be determined by the first weight and the second weight, for example:

[0110]

[0111] α1+β1=100%

[0112] Wherein, α1 is the efficiency weight (first weight) coefficient, β1 is the load weight (second weight) coefficient, and in an optional embodiment, α1=β1=50%.

[0113] When it is detected that there is a lag in the mother pipe pressure regulation, that is, the mother pipe pressure cannot respond quickly to the external load change, β1 (the second weight coefficient) can be set to a higher value, that is, when distributing the load, the system will pay more attention to the load margin capacity of the boiler. For example, when the load is increased, the boiler with a larger load margin (remaining capacity) will be assigned a higher target weight, so that it will be preferentially selected to increase the load to quickly respond to the mother pipe pressure change and reduce the pressure regulation lag. Conversely, when the load is reduced, the boiler with a larger load margin (regulation surplus energy) will be assigned a higher target weight even if its thermal efficiency is lower, to ensure that the mother pipe pressure quickly returns to the set value to avoid excessive pressure fluctuations.

[0114] When the system operation goal is to improve the thermal efficiency of the boiler, α1 can be set with a higher weight. For example, when the load is increased, the boiler with high thermal efficiency will be given a larger target weight, and its fuel quantity will be increased first, so as to maximize the thermal energy conversion efficiency and reduce fuel consumption while meeting the load demand. When the load is reduced, although the boiler with low thermal efficiency has a larger adjustment surplus, the system will tend to reduce the load of the boiler with higher thermal efficiency to avoid unnecessary energy waste and ensure that the overall thermal efficiency can still be maintained at a high level during the load reduction process.

[0115] The target weight can be calculated based on the weighted calculation of α1 and β1, that is, the thermal efficiency and load regulation capability of the boiler are comprehensively considered, and the load adjustment priority is assigned to each boiler. When the load is increased, the target weight is biased towards boilers with high thermal efficiency and large surplus capacity, while when the load is reduced, it is biased towards boilers with large surplus capacity but low thermal efficiency. In this way, the system can dynamically adjust the operating status of the boiler while maintaining the stability of the mother pipe pressure, achieving the optimal thermal efficiency and fuel economy of the entire system, thereby reducing production costs and improving economic benefits.

[0116] In some embodiments of the present application, the first total load demand can be calculated using an incremental PID method based on the main pipe pressure set value and the main pipe pressure actual value, and the product of the target weight percentage and the first total load demand (first load distribution amount) is sent to the load distributed control system (Distributed Control System, DCS for short) of the corresponding power equipment to achieve specific load distribution of the power equipment when all power equipment in the main pipe control operation system are in the first mode.

[0117] In the case where there are both first-mode power equipment and second-mode power equipment in the multiple power equipment of the main pipe control system, for the first-mode power equipment, load distribution can be performed in accordance with the above-mentioned method of calculating the target weight; for the second-mode power equipment, the load correction value corresponding to each power equipment can be determined by the following steps: obtaining the third main pipe pressure value of the main pipe from the working state parameter of the main pipe, and calculating the first difference between the third main pipe pressure value and the third preset pressure value; determining the preset interval into which the first difference falls, and calculating the load correction value of the power equipment by adopting an adjustment method corresponding to the preset interval, wherein the load correction value is determined based on the temperature correction value of the power equipment.

[0118] The first difference, i.e., the deviation between the third mother pipe pressure value and the third preset pressure value, is used to evaluate the gap between the current system operation state and the target state. In some embodiments of the present application, a real-time mother pipe pressure reading can be obtained from the DCS system through OPC (OLE for Process Control) communication to monitor the current pressure state of the system.

[0119] In some embodiments of the present application, the number of preset intervals can be determined according to the adjustment accuracy, for example, it can include a first preset interval, a second preset interval, a third preset interval and a fourth preset interval, wherein the maximum value of the first preset interval is smaller than the minimum value of the second preset interval, the maximum value of the second preset interval is smaller than the minimum value of the third preset interval, and the maximum value of the third preset interval is smaller than the minimum value of the fourth preset interval.

[0120] The load correction value refers to the value used to guide the equipment to adjust its heat output to adapt to the change of the main pipe pressure. It can be calculated based on the temperature correction value of the power equipment and reflects the load amount that the equipment needs to increase or decrease in the next cycle. In order to more finely control the load of the equipment and ensure the stable operation of the equipment under various pressure conditions, the load correction value can be adjusted based on different pressure ranges, specifically:

[0121] (1) When the first difference falls within the first preset interval, the load correction value is determined according to the first temperature correction value, wherein the first temperature correction value includes zero. In this case, the main pipe pressure is close to the target, and there is no need to adjust the operating state of the power equipment, and the current operating level is maintained to avoid unnecessary disturbances.

[0122] (2) When the first difference falls within the second preset interval, the load correction value is determined according to the second temperature correction value, wherein the second temperature correction value includes a value determined according to the average load flow of the main pipe operation system. In this case, by adjusting the temperature correction value with the average load flow as a reference, the main pipe pressure can be controlled more precisely, the pressure fluctuation caused by the adjustment of a single power device can be avoided, and the overall stability and economy of the system are improved.

[0123] (3) When the first difference falls within the third preset interval, the load correction value is determined according to the third temperature correction value, wherein the third temperature correction value includes a value determined according to the third main pipe pressure value and the average load flow rate. In this case, by combining the pressure deviation and the average load flow rate evaluation, the system can adopt a more effective load adjustment strategy when the pressure deviation is large, thereby quickly restoring the main pipe pressure to the target range, thereby improving the response speed and control accuracy of the system.

[0124] In order to improve the response speed and control accuracy of the system, the temperature correction value can be determined by considering the trends of pressure and flow, so as to predict future operating conditions and adjust the load distribution in advance. Specifically: obtain the first change trend of the mother pipe pressure value of the mother pipe and the second change trend of the average load flow, wherein the change trend includes an upward trend and a downward trend; when the first change trend is the same as the second change trend, determine the third temperature correction value corresponding to the third mother pipe pressure value and the average load flow.

[0125] The first trend of the main pipe pressure value refers to the changing trend of the main pipe pressure value over time, including an upward trend or a downward trend, which reflects the change in the system's demand for thermal energy. The second trend of the average load flow refers to the changing trend of the average load flow of all operating boilers in the system over time, including an upward trend or a downward trend, which reflects the changing trend of the overall thermal energy output of the boiler. The rising or falling trend of pressure and flow can be identified by real-time monitoring of the main pipe pressure value and the load flow of each boiler, as well as their changes in time series. For example, if the main pipe pressure value and the average load flow both show an upward trend in several consecutive sampling cycles, the system is in a state of increasing thermal energy demand; conversely, if both decrease, it indicates that the system's thermal energy demand is decreasing. Trend analysis enables the system to predictably identify changes in thermal energy demand, provides forward-looking information for subsequent control strategies, and helps to adjust load distribution in advance and reduce system fluctuations caused by response lags.

[0126] When the main pipe pressure value and the average load flow rate show the same trend of change, the system will enter a more sophisticated control mode. For example, in the load increase condition (when both pressure and flow rate increase), if the current pressure is lower than the set value but the average load flow rate is higher, the third temperature correction value can be set to a positive value, but with a smaller amplitude, to avoid excessive increase in load causing the pressure to rise rapidly beyond the set value; and in the load reduction condition (when both pressure and flow rate decrease), if the current pressure is higher than the set value but the average load flow rate is lower, the third temperature correction value can be set to a negative value, also with a smaller amplitude, to avoid excessive reduction in load causing the pressure to drop rapidly.

[0127] (4) When the first difference falls within the fourth preset interval, the load correction value is determined according to the fourth temperature correction value, wherein the fourth temperature correction value includes a value determined according to the third main pipe pressure value. In this case, by directly calculating the temperature correction value according to the main pipe pressure, the system can take measures quickly in extreme cases to prevent the excessive pressure fluctuation from causing serious impact on the safety and economy of the system, and ensure that the system can resume normal operation as soon as possible.

[0128] In order to avoid instability of the system when the pressure continues to change, the temperature correction value can be determined by monitoring the long-term trend of the main pipe pressure to achieve more accurate load adjustment. Specifically: a third change trend of the main pipe pressure value of the main pipe is obtained, wherein the third change trend includes a continuous rising trend within a preset period and a continuous falling trend within a preset period; when the third change trend is a continuous rising trend or a continuous falling trend, a fourth temperature correction value corresponding to the third main pipe pressure value is determined.

[0129] A continuous upward trend means that within a preset period (such as several minutes or hours), the main pipe pressure value presents a continuous increase state, for example, the main pipe pressure value of each sampling period is greater than the main pipe pressure value of the previous period, or the overall average main pipe pressure value is constantly increasing. A continuous upward trend indicates that the system's demand for heat energy is decreasing, or that the heat energy supply exceeds the demand, resulting in a gradual increase in the main pipe pressure.

[0130] A continuous downward trend means that within a preset period, the main pipe pressure value presents a state of continuous decrease. For example, the main pipe pressure value of each sampling period is less than the main pipe pressure value of the previous period, or the average value of the main pipe pressure value is decreasing overall. A continuous downward trend indicates that the system's demand for thermal energy is increasing, or that the thermal energy supply is insufficient, resulting in a gradual decrease in the main pipe pressure. Through trend matching and response based on pressure values, the system can more accurately adjust the load distribution in the long-term trend of thermal energy demand to ensure that the main pipe pressure is stable within the target range. This control strategy helps to balance short-term load demand fluctuations with pressure stability under long-term trends, reduces over-adjustment and unnecessary energy waste, and improves the overall operating economy and stability of the system.

[0131] When the third trend is identified as a continuous increase or a continuous decrease, the fourth temperature correction value can be determined according to the current third mother pipe pressure value and the preset control strategy. For example, under a continuous upward trend, if the current mother pipe pressure value is higher than the target value, the fourth temperature correction value can be set to a negative value to instruct the boiler to reduce the heat output and reduce the mother pipe pressure; under a continuous downward trend, if the current mother pipe pressure value is lower than the target value, the fourth temperature correction value can be set to a positive value to promote the boiler to increase the heat output and increase the mother pipe pressure.

[0132] In order to facilitate understanding of the above process, an explanation is given below in conjunction with a specific embodiment:

[0133] (1) Obtaining basic data: including the operation mode of the boilers in the main control operation system, the set value and measured value of the furnace temperature of the fixed heat boiler (i.e., the boiler in the second mode), the load flow of the pressure regulating boiler (i.e., the boiler in the first mode), the load flow of the fixed heat boiler (i.e., the boiler in the second mode), the set value of the average load flow deviation between the fixed heat boiler i and the pressure regulating boiler k (LLPC SVi ), allowable mean flow deviation radius (RLLP Ci ), main pipe pressure (P Mg ) and its setting value (P Mg_SV ).

[0134] (2) Calculate the deviation of the average load flow rate between the fixed heat boiler i and the pressure regulating boiler k (LLPC PVi ), and its calculation formula is:

[0135]

[0136] Among them, Qi is the load flow of the i-th fixed heat boiler, Qk is the load flow of the k-th pressure regulating boiler, is the average load flow of all surge furnaces, LLPC PVi is the deviation value of the average load flow.

[0137] (3) For the pressure regulating boiler, according to the target weight calculation method in the above steps, the load of the pressure regulating boiler is controlled to meet the dynamically determined load given value (i.e., the first load distribution amount) through the current boiler fuel amount, so as to stabilize the main pipe pressure.

[0138] (4) Calculate the deviation percentage of the main pipe pressure of the fixed heat boiler (i.e., the first difference): The fixed heat boiler is adjusted according to the deviation percentage (E) of the main pipe pressure and its set value. The calculation formula is:

[0139] E=|P Mg -P Mg_SV | / P Mg_SV *100%

[0140] Where E is the deviation percentage, P Mg is the main pipe pressure, P Mg_SV is the main pipe pressure setting value (the third preset pressure value).

[0141] When the main pipe pressure (P Mg ) and its set value (P Mg_SV ) is less than 0.5%, which is determined to fall within the first preset interval. Each fixed-heat boiler controls the furnace temperature of the boiler to meet the fixed load (the load when automatic control is switched on) output through the fuel amount of the current boiler, that is, the first temperature correction value is zero, and the load of the boiler is not adjusted.

[0142] When the main pipe pressure (P Mg ) and its set value (P Mg_SV ) is between 0.5% and 1%, and it is determined that it falls into the second preset interval. The average load flow difference setting value (LLPC) of each fixed heat boiler and pressure regulating boiler can be set according to the average load flow difference setting value (LLPC SVi ) and the average load flow difference current value (LLPC PVi ) Adjust the furnace temperature setting value of the constant heat boiler i (LUT SVi ), the calculation formula of the second temperature correction value is:

[0143] d_LUTi=-(LLPC PVi -LLPC SVi ) / therm_value0

[0144] Wherein, d_LUTi is the furnace temperature modification value of the fixed heat boiler i (i.e., the second temperature correction value), LLPC PVi is the current value of the average load flow difference, LLPC SVi is the average load flow difference setting value, and therm_value0 is the furnace temperature correction coefficient (such as 1 / 6 to 5 / 3).

[0145] When the main pipe pressure (P Mg) and its set value (P Mg_SV ) is between 1% and 1.5%, and it is determined that it falls into the third preset interval. The load flow output of the fixed heat boiler i can be adjusted according to the trend of the mother pipe pressure and the average load flow. Specifically:

[0146] If P Mg >P Mg_SV (i.e. the first trend is an upward trend) and LLPC PVi >LLPC SVi (i.e. the second trend is an upward trend), or P Mg <P Mg_SV (i.e. the first trend is a downward trend) and LLPC PVi <LLPC SVi (that is, the second trend is a downward trend), the calculation formula for the third temperature correction value is:

[0147] d_LUTi=-((LLPC PVi -LLPC SVi ) / therm_value0+(P Mg -P Mg_SV ) / therm_value1)

[0148] Therm_value0 is the furnace temperature correction coefficient (such as 1 / 6 to 5 / 3), and therm_value1 is the pressure correction coefficient (such as 0.01 to 1).

[0149] When the first trend is different from the second trend, d_LUTi (third temperature correction value)=0.

[0150] When the main pipe pressure (P Mg ) and its set value (P Mg_SV ) is greater than 1.5%, it is determined that it falls into the fourth preset interval, and the furnace temperature setting value of the fixed heat boiler i can be adjusted according to the continuous increase or continuous decrease trend of the mother pipe pressure, specifically:

[0151] When the main pipe pressure reaches the previous cycle value (P Mg2 )<Previous cycle value of main pipe pressure (P Mg1 )<Current value of main pipe pressure (P Mg0 ) At the same time P Mg0 >P Mg_SV When (i.e. the third trend is a continuous upward trend), or the mother pipe pressure is the value of the previous cycle (P Mg2 )>Pressure value of main pipe in the previous cycle (P Mg1 )>Current value of main pipe pressure (P Mg0 ) At the same time P Mg0 <P Mg_SVWhen (i.e. the third trend is a continuous downward trend), the calculation formula of the fourth temperature correction value is:

[0152] d_LUTi=-(P Mg -P Mg_SV ) / therm_value1

[0153] Therm_value1 is the pressure correction coefficient (such as 0.01 to 1).

[0154] In the above four steps, the furnace temperature setting value of the fixed heat boiler i can be determined by the determined temperature correction values ​​(first temperature correction value, second temperature correction value, third temperature correction value, fourth temperature correction value), and finally the load distribution is determined by the furnace temperature setting value. The calculation formula of the furnace temperature setting value is:

[0155] LUT SVi =LUT SVi_pre +d_LUTi

[0156] Among them, LUT SVi is the furnace temperature setting value of the fixed heat boiler i, LUT SVi_pre is the furnace temperature setting value of the fixed heating boiler i in the previous cycle, and d_LUTi is the temperature correction value of the fixed heating boiler i.

[0157] In some embodiments of the present application, if LLPC PVi In [LLPC SVi –RLLP Ci ,LLPC SVi +RLLP Ci ] outside the range, where RLLP Ci is the average flow deviation radius allowed by the boiler, then d_LUTi=0, LUT SVi =LUT SVi_pre .

[0158] In order to avoid unnecessary and excessive system disturbances caused by frequent adjustments, a load adjustment period of the power equipment can be set. In some embodiments of the present application, the load adjustment period of the power equipment in the first operating mode can be shorter than the load adjustment period of the power equipment in the second operating mode. In the first operating mode, due to the shorter load adjustment period, the power equipment can respond more quickly to fluctuations in system pressure or load demand. In the second operating mode, due to the longer load adjustment period, the adjustment speed of the power equipment is relatively slow, which helps to reduce system disturbances caused by frequent adjustments.

[0159] In the case that only power equipment of the second mode exists among the multiple power equipment of the mother control system, the target weights corresponding to the multiple power equipment can be determined. The target weights can be weights (i.e., first weights) determined based on the positive balance efficiencies corresponding to the multiple power equipment. The target weights are mathematically calculated with the second total load demand of the mother control operation system to obtain the second load distribution amounts corresponding to the multiple power equipment.

[0160] In order to ensure the stable operation of the system under various working conditions, the load distribution can be optimized in real time according to the actual operating status of the system. Specifically: execute the weight adjustment step, including: obtaining the second difference between the fourth mother pipe pressure value and the fourth preset pressure value of the mother pipe; when the second difference is greater than the preset pressure difference, adjust the target weight to the weight of the previous adjustment cycle; after using the adjusted weight to distribute the load, repeat the weight adjustment step until the second difference is less than the preset pressure difference.

[0161] The preset pressure difference refers to a pre-set allowable second difference range. Exceeding this range will trigger the weight rollback mechanism. By monitoring the difference between the main pipe pressure and the target value, and taking measures to roll back the load distribution weight when the difference exceeds the allowable range, the system is prevented from being over-adjusted and the main pipe pressure is ensured to quickly stabilize within the target range.

[0162] In a specific embodiment, when there is only a power device in the second mode among multiple power devices in the mother control system (full constant heat mode), load distribution can be performed in the following manner:

[0163] (1) The operation mode, furnace temperature setting value and measured value, load flow rate and load preset weight setting value of each boiler are obtained, and the target weight of each boiler will be allocated according to the calculation method of the first weight mentioned above.

[0164] (2) During the adjustment process, the stability of the main pipe pressure can be maintained by changing the load adjustment cycle and the downward step size of the target weight. For example, the load adjustment cycle is 30s, the downward step size of the target weight is controlled at 0.5%, and the deviation percentage between the main pipe pressure and its set value (i.e., the second difference) is controlled within 0.5%; if the deviation percentage exceeds the preset value (i.e., the preset pressure difference), each target weight needs to be rolled back to the target weight percentage of the previous load adjustment cycle until the main pipe pressure returns to a stable range.

[0165] Through the above steps S202 to S206, by dynamically adjusting the load distribution strategy, different load distribution strategies are adopted according to the different operating modes of the power equipment in the main tube control operation system, so as to achieve the purpose of coordinating the combustion efficiency of each equipment in the main tube control operation system, thereby achieving the technical effect of effectively responding to the changes in the main tube pressure and the operating state of the power equipment, and ensuring the efficient and stable operation of the system under different working conditions, thereby solving the technical problems that the related technology adopts a fixed load distribution method, cannot quickly respond to the fluctuations in the combustion conditions of the equipment in the main tube control operation system, and has low combustion efficiency and poor main tube pressure stability.

[0166] Figure 3 is a schematic diagram of the overall framework of a load distribution method according to an embodiment of the present application, such as Figure 3 As shown, taking the boiler as an example, the load adjustment method can be determined by the following steps:

[0167] S302: Real-time operation parameter acquisition.

[0168] At the initial stage of system startup, the integrated OPC communication protocol is used to obtain boiler system parameters in real time from the DCS (distributed control system) of each boiler, including but not limited to main steam flow, temperature, pressure, feed water temperature, pressure, coal flow and low calorific value of coal entering the furnace, to ensure the accuracy and effectiveness of subsequent control algorithms.

[0169] S304: Evaluate the number of operating boilers.

[0170] The system checks whether the number of boilers currently in operation meets the conditions for multi-boiler coordinated control, that is, whether there are more than 2 boilers. If the conditions are met, S306 is executed to enter the full pressure regulation mode; otherwise, the process ends, indicating that the current system conditions are not suitable for multi-boiler pressure coordinated control, and a single boiler control strategy can be adopted.

[0171] S306: full voltage regulation mode start and weight calculation.

[0172] When the evaluation confirms that the number of boilers in operation exceeds 2, the system automatically switches to full pressure regulation mode, which is an operation strategy that coordinates the fuel quantity of all boilers and controls the load of each boiler to meet the load given value determined by the algorithm to ensure the stability of the mother pipe pressure. In this mode, the system further executes S3061 and S3062 to calculate the preset weights in the thermal efficiency mode and thermal load mode respectively, providing a basis for the subsequent comprehensive weight determination.

[0173] S3061: Calculation of efficiency weight in thermal efficiency mode.

[0174] In the thermal efficiency mode, the control algorithm determines the preset efficiency weight (first weight) by calculating the positive balance efficiency of the boiler based on the real-time collected operating data of each boiler. The efficiency weight allocation principle is to give priority to increasing the load of boilers with higher efficiency when increasing the load, and to give priority to reducing the load of boilers with lower efficiency when reducing the load, so as to maximize the combustion efficiency of the entire boiler system.

[0175] S3062: Calculation of load weight in thermal load mode.

[0176] In the thermal load mode, the algorithm calculates the upper and lower load margins of the boilers based on the upper and lower limits of the current main steam flow of each boiler, thereby determining the preset load weight (second weight). The calculation of the load weight fully considers the boiler's adjustment capability to ensure that the boiler can operate stably while meeting the load demand.

[0177] S3063: Comprehensive weight determination and load distribution.

[0178] According to the preset efficiency weight and preset load weight obtained in S3061 and S3062, the system calculates the preset comprehensive weight (target weight), and adjusts the fuel quantity of each boiler based on this to achieve dynamic load distribution. The calculation of the comprehensive weight fully balances the thermal efficiency and thermal load of the boiler, ensuring that the entire boiler system can maintain high economy and stability under any load changes.

[0179] S308: Starting the pressure setting mode and applying the strategy.

[0180] When the system detects that the operating boiler is in both pressure regulation mode and fixed heat mode, it automatically switches to pressure setting mode. In this mode, the pressure regulating boiler continues to execute the control strategy in S306, while the fixed heat boiler adjusts the furnace temperature setting value according to the deviation between the main pipe pressure and the set value to achieve precise control of the main pipe pressure.

[0181] S3081: Execution of pressure regulating boiler strategy.

[0182] For boilers operating in pressure regulation mode, the system continues to execute the strategies in thermal efficiency mode and thermal load mode in S306, and allocates fuel quantity and load through the comprehensive weight (i.e., target weight) determined by the algorithm, to ensure that the pressure regulating boiler can respond quickly to system demand and maintain the main pipe pressure stable.

[0183] S3082: Fixed-heat boiler temperature adjustment strategy.

[0184] When the system is in the pressure setting mode, for the boilers operating in the fixed heat mode, the system executes S3083 to evaluate the deviation percentage between the actual value of the main pipe pressure and the set value, and then calculates the furnace temperature adjustment value of each fixed heat boiler according to the preset range of the deviation, so as to stabilize the main pipe pressure while maintaining the fixed load output of the boiler.

[0185] S3083: Main pipe pressure deviation analysis and interval division.

[0186] The system monitors the mother pipe pressure in real time and calculates the deviation percentage between the measured value and the set value. The deviation percentage is divided into four preset intervals: less than 0.5%, 0.5% to 1%, 1% to 1.5%, and greater than 1.5%, providing a basis for the subsequent temperature adjustment strategy of the fixed heat boiler to achieve more refined mother pipe pressure control.

[0187] S3084: Temperature adjustment strategy and execution.

[0188] According to the preset interval of the main pipe pressure deviation percentage in S3083, the algorithm calculates and determines the furnace temperature adjustment strategy of the fixed heat boiler. By adjusting the furnace temperature setting value, the fixed heat boiler can respond to system requirements and maintain a fixed load output, while assisting the pressure regulating boiler to stabilize the main pipe pressure and achieve efficient operation of the entire system.

[0189] S310: Full fixed heat mode startup and weight adjustment.

[0190] When the system detects that all running boilers are in fixed heat mode, it automatically enters full fixed heat mode. In this mode, the system recalculates the preset load weight of the boiler, and according to the calculation rules in the thermal efficiency mode (S3061), ensures that while maintaining a fixed load output, the thermal efficiency of the boiler can be optimized through weight adjustment, achieving dual guarantees of economy and stability.

[0191] S3101: Determine the weight of the constant heat boiler in the thermal efficiency mode.

[0192] In full fixed heat mode, the algorithm uses the thermal efficiency model to calculate the preset load weight of each fixed heat boiler. The determination of the weight fully considers the thermal efficiency of the boiler, ensuring that under fixed load output conditions, the boiler can operate at the optimal efficiency, reduce energy consumption, and improve economic benefits.

[0193] S312: Dynamic load adjustment and strategy execution.

[0194] According to the current operating mode of the system (S306 full pressure regulation mode, S308 pressure setting mode, S310 full heat setting mode), the system dynamically adjusts the load of each boiler, and adjusts the fuel quantity and load output of the boiler according to the calculated target weight (S3063) and / or furnace temperature adjustment value (S3084), to ensure that the main pipe pressure is stable near the set value, while pursuing the economy and thermal efficiency of boiler operation, and realizing optimal control of coal-fired steam boiler operation.

[0195] Figure 4 is a structural diagram of a load distribution device according to an embodiment of the present application, such as Figure 4 As shown, the device comprises:

[0196] The acquisition module 402 is used to acquire the operation modes reported by the multiple power devices connected to the main pipe in the main pipe operation system, wherein the operation modes include: a first mode and a second mode, wherein the first mode is to control the power device to output according to a first load value, the first load value is determined according to the working state parameter of the main pipe, and the second mode is to control the power device to output according to a second load value, the second load value is a load value determined according to a preset temperature value;

[0197] The comparison module 404 is used to compare the operation modes reported by the multiple power devices to obtain a comparison result, wherein the comparison result includes: the operation modes of the multiple power devices are all the same, and at least some of the operation modes of the multiple power devices are different;

[0198] The determination module 406 is used to determine a load distribution strategy corresponding to the comparison result, wherein the load distribution strategy is at least used to indicate the load amount distributed to the plurality of power equipments.

[0199] In the above-mentioned load distribution device, the determination module is also used to calculate the target weights corresponding to the multiple power devices respectively when the operating modes of the multiple power devices are all the same, and use the target weights to distribute the load; when at least some of the operating modes of the multiple power devices are different, calculate the adjustment coefficients corresponding to the multiple power devices respectively, and use the adjustment coefficients to distribute the load, wherein the adjustment coefficients include the target weights corresponding to the power devices when the operating mode is the first mode, and the load correction value of the power devices when the operating mode is the second mode.

[0200] The above-mentioned load distribution device also includes a distribution module 408, which is used to obtain a first total load demand of the main control operation system; calculate the first weights and second weights corresponding to multiple power equipment respectively, wherein the first weight includes a weight determined according to the positive balance efficiency corresponding to the multiple power equipment respectively, and the second weight includes a weight determined according to the load margin corresponding to the multiple power equipment respectively; determine the target weight corresponding to the first weight and the second weight; perform mathematical operations on the first total load demand and the target weight to obtain the first load distribution corresponding to the multiple power equipment respectively.

[0201] In the above-mentioned load distribution device, the determination module is also used to obtain the first main pipe pressure value of the main pipe from the working state parameters of the main pipe; when the first main pipe pressure value is less than the first preset pressure value, the first weight is determined based on the positive proportional relationship between the weight and the positive balancing efficiency; when the first main pipe pressure value is greater than the first preset pressure value, the second weight is determined based on the inverse proportional relationship between the weight and the positive balancing efficiency.

[0202] In the above-mentioned load distribution device, the determination module is also used to obtain the load margins corresponding to multiple power equipment respectively, wherein the load margin includes an upper load margin and a lower load margin, the upper load margin is used to indicate the maximum load amount allowed to be increased for the corresponding power equipment, and the lower load margin is used to indicate the maximum load amount allowed to be reduced for the corresponding power equipment; when the upper load margin is less than zero or the lower load margin is less than zero, the second weight of the corresponding power equipment is determined to be zero; when both the upper load margin and the lower load margin are greater than zero, the second weights corresponding to the multiple power equipment are determined according to the second main pipe pressure value of the main pipe.

[0203] In the above-mentioned load distribution device, the determination module is also used to determine that the weight value that is directly proportional to the load margin is the second weight when the second main pipe pressure value is less than the second preset pressure value; and to determine that the weight value that is directly proportional to the load margin is the second weight when the second main pipe pressure value is greater than the second preset pressure value.

[0204] In the above-mentioned load distribution device, the determination module is also used to obtain the third mother pipe pressure value of the mother pipe from the working state parameters of the mother pipe, and calculate the first difference between the third mother pipe pressure value and the third preset pressure value; determine the preset interval in which the first difference falls, and use the adjustment method corresponding to the preset interval to calculate the load correction value of the power equipment, wherein the load correction value is determined based on the temperature correction value of the power equipment.

[0205] In the above-mentioned load distribution device, the preset interval includes: a first preset interval, a second preset interval, a third preset interval and a fourth preset interval, wherein the maximum value of the first preset interval is less than the minimum value of the second preset interval, the maximum value of the second preset interval is less than the minimum value of the third preset interval, and the maximum value of the third preset interval is less than the minimum value of the fourth preset interval; the determination module is also used to determine the load correction value according to the first temperature correction value when the first difference falls into the first preset interval, wherein the first temperature correction value includes zero; when the first difference falls into the second preset interval, determine the load correction value according to the second temperature correction value, wherein the second temperature correction value includes a value determined according to the average load flow of the main pipe control operation system; when the first difference falls into the third preset interval, determine the load correction value according to the third temperature correction value, wherein the third temperature correction value includes a value determined jointly according to the third main pipe pressure value and the average load flow; when the first difference falls into the fourth preset interval, determine the load correction value according to the fourth temperature correction value, wherein the fourth temperature correction value includes a value determined according to the third main pipe pressure value.

[0206] In the above-mentioned load distribution device, the determination module is also used to obtain a first change trend of the main pipe pressure value of the main pipe and a second change trend of the average load flow, wherein the change trend includes an upward trend and a downward trend; when the first change trend is the same as the second change trend, determine a third temperature correction value corresponding to the third main pipe pressure value and the average load flow.

[0207] In the above-mentioned load distribution device, the determination module is also used to obtain a first change trend of the main pipe pressure value of the main pipe and a second change trend of the average load flow, wherein the change trend includes an upward trend and a downward trend; when the first change trend is the same as the second change trend, a third change trend of the main pipe pressure value of the main pipe is obtained, wherein the third change trend includes a continuous upward trend within a preset period and a continuous downward trend within a preset period; when the third change trend is a continuous upward trend or a continuous downward trend, a fourth temperature correction value corresponding to the third main pipe pressure value is determined.

[0208] In the above-mentioned load distribution device, the distribution module is also used to determine the target weights corresponding to multiple power equipment respectively when the operating mode is the second mode and the operating modes of multiple power equipment are all the same, wherein the target weights include weights determined based on the positive balance efficiencies corresponding to the multiple power equipment respectively; using the target weights to distribute the load includes: performing mathematical operations on the target weights and the second total load demand of the main control operating system to obtain the second load distribution amounts corresponding to the multiple power equipment respectively.

[0209] In the above-mentioned load distribution device, the distribution module is also used to execute a weight adjustment step, including: obtaining a second difference between the fourth mother pipe pressure value of the mother pipe and the fourth preset pressure value; when the second difference is greater than the preset pressure difference, adjusting the target weight to the weight of the previous adjustment cycle; after using the adjusted weight to distribute the load, repeating the weight adjustment step until the second difference is less than the preset pressure difference.

[0210] It should be noted that Figure 4 The load distribution device shown is used to perform Figure 2 The load distribution method shown is therefore Figure 2 The explanations in the load distribution method also apply to Figure 4 The load distribution device shown will not be described in detail here.

[0211] An embodiment of the present application also provides an electronic device, which includes a memory and a processor, wherein the memory is used to store program instructions; the processor is connected to the memory and is used to execute the steps of the load distribution method in each embodiment of the present application.

[0212] For example, the processor performs the following functions by executing program instructions stored in the memory:

[0213] Obtain the operating modes reported by multiple power devices connected to the main pipe in the main pipe control operating system, wherein the operating modes include: a first mode and a second mode, the first mode is to control the power device to output according to a first load value, the first load value is determined according to the working state parameter of the main pipe, and the second mode is to control the power device to output according to a second load value, the second load value is a load value determined according to a preset temperature value; compare the operating modes reported by the multiple power devices to obtain a comparison result, wherein the comparison result includes: the operating modes of the multiple power devices are all the same, and at least some of the operating modes of the multiple power devices are different; determine a load distribution strategy corresponding to the comparison result, wherein the load distribution strategy is at least used to indicate the load amount allocated to the multiple power devices.

[0214] An embodiment of the present application further provides a non-volatile storage medium, which includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the steps of the load distribution method in each embodiment of the present application by running the computer program.

[0215] An embodiment of the present application also provides a computer program product, including computer instructions, which, when executed by a processor, implement the steps of the load distribution method in each embodiment of the present application.

[0216] The embodiments of the present application also provide a computer program, which, when executed by a processor, implements the steps of the load distribution method in each embodiment of the present application.

[0217] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0218] In the above embodiments of the present application, the description of each embodiment has its own emphasis. For parts that are not described in detail in a certain embodiment, please refer to the relevant description of other embodiments.

[0219] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. Among them, the device embodiments described above are only schematic. For example, the division of the units can be a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of units or modules, which can be electrical or other forms.

[0220] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple units. Some or all of the units may be selected according to actual needs to achieve the purpose of the present embodiment.

[0221] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0222] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application, in essence, or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server or a network device, etc.) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), mobile hard disk, disk or optical disk and other media that can store program codes.

[0223] The above is only a preferred implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A method for load distribution, characterized in that: include: Obtaining the operation modes reported by multiple power devices connected to the main pipe in the main pipe operation system, wherein the operation modes include: a first mode and a second mode, wherein the first mode is to control the power device to output according to a first load value, the first load value is determined according to the working state parameter of the main pipe, and the second mode is to control the power device to output according to a second load value, the second load value is a load value determined according to a preset temperature value; Comparing the operating modes reported by the multiple power devices to obtain a comparison result, wherein the comparison result includes: the operating modes of the multiple power devices are all the same, and at least some of the operating modes of the multiple power devices are different; A load distribution strategy corresponding to the comparison result is determined, wherein the load distribution strategy is at least used to indicate the load amount distributed to the plurality of power devices.

2. The method according to claim 1, characterized in that Determining a load distribution strategy corresponding to the comparison result includes: When the operation modes of the plurality of power devices are all the same, calculating the target weights respectively corresponding to the plurality of power devices, and using the target weights to distribute the load; When at least some of the operating modes of the multiple power devices are different, adjustment coefficients corresponding to the multiple power devices are calculated respectively, and load distribution is performed using the adjustment coefficients, wherein the adjustment coefficients include the target weight corresponding to the power device when the operating mode is the first mode, and the load correction value of the power device when the operating mode is the second mode.

3. The method according to claim 2, characterized in that The operation mode is the first mode, and when the operation modes of the plurality of power devices are all the same, calculating the target weights respectively corresponding to the plurality of power devices, and using the target weights to distribute the load, including: Obtaining a first total load demand of the main control operation system; Calculating first weights and second weights corresponding to the plurality of power devices, respectively, wherein the first weights include weights determined according to the positive balance efficiencies corresponding to the plurality of power devices, and the second weights include weights determined according to the load margins corresponding to the plurality of power devices, respectively; determining a target weight corresponding to the first weight and the second weight; A mathematical operation is performed on the first total load demand and the target weight to obtain first load distribution amounts corresponding to the plurality of power equipments respectively.

4. The method according to claim 3, characterized in that The first weight is determined by: Acquire a first main pipe pressure value of the main pipe from the working state parameter of the main pipe; When the first main pipe pressure value is less than a first preset pressure value, determining the first weight according to a positive proportional relationship between the weight and the positive balance efficiency; When the first main pipe pressure value is greater than the first preset pressure value, the second weight is determined according to an inverse proportional relationship between the weight and the positive balancing efficiency.

5. The method according to claim 3, characterized in that: The second weight is determined by: Obtaining the load margins corresponding to the multiple power devices respectively, wherein the load margins include an upper load margin and a lower load margin, the upper load margin is used to indicate the maximum load amount allowed to be increased by the corresponding power device, and the upper load margin is used to indicate the maximum load amount allowed to be reduced by the corresponding power device; When the upper load margin is less than zero or the lower load margin is less than zero, determining the second weight of the corresponding power equipment to be zero; In a case where the upper load margin and the lower load margin are both greater than zero, second weights respectively corresponding to the plurality of power devices are determined according to the second main pipe pressure value of the main pipe.

6. The method according to claim 5, characterized in that When the upper load margin and the lower load margin are both greater than zero, determining the second weights respectively corresponding to the plurality of power devices according to the second main pipe pressure value of the main pipe includes: When the second main pipe pressure value is less than a second preset pressure value, determining a weight value that is proportional to the load margin as the second weight; When the second main pipe pressure value is greater than the second preset pressure value, a weight value that is in direct proportion to the under-load margin is determined as the second weight.

7. The method according to claim 2, characterized in that The load correction value of the power equipment whose operating mode is the second mode is determined by the following method: Acquire a third mother pipe pressure value of the mother pipe from the working state parameter of the mother pipe, and calculate a first difference between the third mother pipe pressure value and a third preset pressure value; Determine a preset interval within which the first difference falls, and calculate a load correction value of the power equipment using an adjustment method corresponding to the preset interval, wherein the load correction value is determined based on a temperature correction value of the power equipment.

8. The method according to claim 7, characterized in that The preset intervals include: a first preset interval, a second preset interval, a third preset interval and a fourth preset interval, wherein the maximum value of the first preset interval is less than the minimum value of the second preset interval, the maximum value of the second preset interval is less than the minimum value of the third preset interval, and the maximum value of the third preset interval is less than the minimum value of the fourth preset interval; and the load correction value of the power equipment is calculated using the adjustment method corresponding to the preset intervals, including: When the first difference falls within the first preset interval, determining the load correction value according to a first temperature correction value, wherein the first temperature correction value includes zero; When the first difference falls within the second preset interval, determining the load correction value according to a second temperature correction value, wherein the second temperature correction value includes a value determined according to an average load flow of the main control operation system; When the first difference falls within the third preset interval, the load correction value is determined according to a third temperature correction value, wherein the third temperature correction value includes a value determined jointly according to the third main pipe pressure value and the average load flow rate; When the first difference falls within the fourth preset interval, the load correction value is determined according to a fourth temperature correction value, wherein the fourth temperature correction value includes a value determined according to the third main pipe pressure value.

9. The method according to claim 8, characterized in that The third temperature correction value is determined by: Obtaining a first change trend of the main pipe pressure value of the main pipe and a second change trend of the average load flow, wherein the change trend includes an upward trend and a downward trend; When the first change trend is the same as the second change trend, the third temperature correction value corresponding to the third main pipe pressure value and the average load flow is determined.

10. The method according to claim 8, characterized in that The fourth temperature correction value is determined by: Acquire a third change trend of the main pipe pressure value of the main pipe, wherein the third change trend includes a continuous rising trend within a preset period and a continuous falling trend within the preset period; When the third change trend is the continuous rising trend or the continuous falling trend, the fourth temperature correction value corresponding to the third main pipe pressure value is determined.

11. The method according to claim 2, characterized in that Calculating the target weights respectively corresponding to the plurality of power devices, comprising: when the operation mode is the second mode and the operation modes of the plurality of power devices are all the same, determining the target weights respectively corresponding to the plurality of power devices, wherein the target weights include weights determined according to the positive balance efficiencies respectively corresponding to the plurality of power devices; The load distribution is performed using the target weight, including: performing a mathematical operation on the target weight and the second total load demand of the main control operation system to obtain second load distribution amounts corresponding to the multiple power equipments respectively.

12. The method according to claim 11, characterized in that After using the target weight to distribute the load, the method further includes: The step of performing weight adjustment includes: obtaining a second difference between a fourth mother pipe pressure value of the mother pipe and a fourth preset pressure value; and adjusting the target weight to a weight of a previous adjustment cycle when the second difference is greater than the preset pressure difference; After load distribution is performed using the adjusted weights, the weight adjustment step is repeated until the second difference is smaller than the preset pressure difference.

13. A load distribution device, characterized in that: include: An acquisition module, used for acquiring the operation modes reported by a plurality of power devices connected to the main pipe in the main pipe operation system, wherein the operation modes include: a first mode and a second mode, wherein the first mode is to control the power device to output according to a first load value, the first load value is determined according to the working state parameter of the main pipe, and the second mode is to control the power device to output according to a second load value, the second load value is a load value determined according to a preset temperature value; A comparison module, configured to compare the operation modes reported by the plurality of power devices to obtain a comparison result, wherein the comparison result includes: the operation modes of the plurality of power devices are all the same, and at least some of the operation modes of the plurality of power devices are different; A determination module is used to determine a load distribution strategy corresponding to the comparison result, wherein the load distribution strategy is at least used to indicate the load amount distributed to the multiple power equipment.

14. An electronic device, characterized in that: include: A memory and a processor, wherein the memory is used to store program instructions; the processor is connected to the memory and is used to execute the load distribution method described in any one of claims 1 to 12.

15. A non-volatile storage medium, characterized in that: The non-volatile storage medium includes a stored computer program, wherein the device where the non-volatile storage medium is located executes the load distribution method according to any one of claims 1 to 12 by running the computer program.

16. A computer program product comprising computer instructions, characterized in that When the computer instructions are executed by a processor, the load distribution method described in any one of claims 1 to 12 is implemented.

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