A method and system for equivalent modeling of power topology of a heating network

Abstract

This invention discloses a method and system for equivalent electrical topology modeling of heating networks, relating to the field of heating network modeling technology. The method divides the heating network into multiple water pipe components, performs hydraulic circuit equivalent analogies on each component to obtain multiple hydraulic circuit equivalent models, and performs thermal circuit equivalent analogies on each component to obtain multiple thermal circuit equivalent models. Based on a preset hydraulic-thermal coupling coefficient, the hydraulic and thermal circuit equivalent models corresponding to each water pipe component are hydraulically and thermally coupled to obtain the equivalent electrical topology model of the heating network. This invention solves the technical problem that traditional heating network modeling methods mainly rely on mechanistic analysis, which suffers from complex parameter identification and low computational efficiency, thus reducing the reliability of heating network operation.

Description

Technical Field

[0001] This invention relates to the field of heating network modeling technology, and in particular to a method and system for equivalent electrical topology modeling of heating networks. Background Technology

[0002] Driven by global energy transition and low-carbon development strategies, heating systems, as a core area of ​​urban energy consumption, require efficient operation and intelligent control to achieve "dual-carbon" goals. Traditional heating networks face problems such as low energy utilization and insufficient accuracy in supply-demand matching, making them difficult to adapt to the development trends of distributed energy access and diversified user heating needs. With the deep penetration of technologies such as the Internet of Things and big data, the digital upgrade of the heating industry is accelerating, and heating network modeling, as a core support for system optimization scheduling, energy consumption monitoring, and fault diagnosis, is becoming increasingly important in terms of technological innovation and application. By constructing accurate heating network models, dynamic simulation of the hydraulic conditions and heat transfer patterns of the pipeline network can be achieved, providing a scientific basis for energy conservation, consumption reduction, and stable operation of the system. This is the core technological foundation for promoting the transformation of the heating industry towards high efficiency, low carbon, and intelligence.

[0003] Currently, traditional heating network modeling methods mainly rely on mechanistic analysis, but these methods suffer from problems such as complex parameter identification and low computational efficiency, which reduce the reliability of heating network operation. Summary of the Invention

[0004] This invention provides a method and system for equivalent power topology modeling of heating networks, which solves the technical problem that traditional heating network modeling methods mainly rely on mechanism analysis for modeling, but have problems such as complex parameter identification and low computational efficiency, which reduce the reliability of heating network operation.

[0005] The first aspect of this invention provides a method for equivalent electrical topology modeling of a heating network, comprising:

[0006] The heating network is divided into multiple water pipe components, and hydraulic circuit equivalent analogies are performed on each of the water pipe components to obtain multiple hydraulic circuit equivalent models.

[0007] Each of the water pipe components was subjected to thermal circuit equivalent analogy to obtain multiple thermal circuit equivalent models;

[0008] Based on the preset hydraulic-thermal coupling coefficient, the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe component are hydraulically and thermally coupled to obtain the power topology equivalent model corresponding to the heating network.

[0009] By adopting the above technical solution, complex heating networks can be decomposed into standardized water pipe components, and equivalent analogies of hydraulic and thermal circuits can be completed separately. Precise coupling is then achieved through hydraulic-thermal coupling coefficients, unifying the entire hydraulic and thermal process of the heating network into an electrical topology model. This significantly reduces the difficulty of parameter identification and computational complexity in multi-energy flow modeling, accurately reproducing the real physical characteristics of water flow, heat transfer, thermal inertia, heat loss, and unidirectional hydraulic-thermal coupling, thus significantly improving the modeling accuracy and computational efficiency of the heating network. Simultaneously, relying on mature circuit analysis methods, the heating network becomes simulable, computable, and scalable, providing a unified model foundation for heat-electricity coordinated scheduling, load forecasting, and operation optimization, effectively enhancing the engineering practicality of multi-energy system interconnection and coordinated optimization under the energy internet.

[0010] Optionally, the step of performing hydraulic circuit equivalent analogies on each of the water pipe components to obtain multiple hydraulic circuit equivalent models includes:

[0011] Based on the principles of energy conservation and mass conservation, a water flow difference-water pressure drop model is constructed for each of the aforementioned water pipe components;

[0012] Based on the preset circuit-water circuit mapping rules, the circuit equivalent analogy is performed on each of the water flow difference-water pressure drop models to obtain multiple initial hydraulic circuit equivalent models.

[0013] Based on the preset dynamic flow velocity correction coefficient, the water resistance model and water sensing model of each of the initial hydraulic circuit equivalent models are corrected to obtain multiple hydraulic circuit equivalent models.

[0014] By adopting the above technical solution, an accurate water flow difference-water pressure drop model can be established based on the physical principles of energy conservation and mass conservation. Then, the complex hydraulic characteristics are transformed into an intuitive and easy-to-understand circuit form through circuit-water circuit mapping rules, forming an initial hydraulic circuit equivalent model. Finally, the water resistance and water induction are dynamically calibrated using the dynamic correction coefficient of flow velocity, which fully restores the frictional resistance, inertial characteristics and actual turbulent flow conditions of pipeline water flow. This significantly reduces the difficulty of nonlinear solution and parameter identification in hydraulic modeling, improves the adaptability of the hydraulic circuit equivalent model to different flow velocities and different pipeline conditions, and makes the hydraulic circuit equivalent model more consistent with the actual pipeline network operation characteristics. It provides an accurate, stable and reusable hydraulic unit foundation for subsequent hydraulic-thermal coupling modeling, while being compatible with mature power system analysis methods, significantly improving the accuracy, efficiency and engineering practicality of heating network hydraulic simulation.

[0015] Optionally, the step of performing thermal circuit equivalent analogies on each of the water pipe components to obtain multiple thermal circuit equivalent models includes:

[0016] The ambient temperature of each water pipe component is obtained, and a thermal circuit model of each water pipe component is constructed based on the law of conservation of energy.

[0017] Based on the preset circuit thermal mapping rules, circuit equivalent analogies are performed on each of the thermal circuit models to obtain multiple initial thermal circuit equivalent models.

[0018] The initial thermal circuit equivalent model is modified according to each of the aforementioned ambient temperatures to obtain multiple thermal circuit equivalent models.

[0019] By adopting the above technical solution, a thermal circuit model that closely matches the actual heat transfer process is constructed with energy conservation as the core. By using circuit thermal circuit mapping rules to transform complex thermodynamic characteristics into standardized circuit forms, and then combining real-time ambient temperature to adaptively correct the initial model, the heat transfer, heat loss, thermal inertia and temperature decay characteristics of the heating pipeline can be accurately characterized. This effectively eliminates the errors caused by changes in ambient temperature to the thermal simulation, significantly reduces the complexity of equations and the difficulty of parameter identification in thermal modeling, and makes the model highly match the actual heating conditions. At the same time, it forms a circuit topology that is isomorphic and compatible with the hydraulic model, providing reliable, accurate and adaptive thermal unit support for subsequent hydraulic-thermal coupling and overall power topology equivalent modeling, significantly improving the accuracy, adaptability and engineering practicality of thermal simulation.

[0020] Optionally, the step of modifying the initial thermal circuit equivalent model according to each of the respective ambient temperatures to obtain multiple thermal circuit equivalent models includes:

[0021] Each ambient temperature is compared with a preset reference ambient temperature to obtain multiple first differences;

[0022] The absolute value of each of the first differences is multiplied by a preset feedback coefficient to obtain multiple first multiplication values;

[0023] Each of the first multiplication values ​​is summed with a preset temperature correction reference value to obtain multiple ambient temperature correction coefficients;

[0024] The corresponding initial thermal circuit equivalent models are corrected by using the respective ambient temperature correction coefficients to obtain multiple thermal circuit equivalent models.

[0025] By adopting the above technical solution, an adaptive ambient temperature correction coefficient can be generated through a standardized process of difference, multiplication, and summation, using the reference ambient temperature as a reference. This allows for precise calibration of the initial thermal circuit equivalent model, quantifying the impact of ambient temperature on heat transfer throughout the process, and automatically compensating for simulation errors caused by temperature fluctuations. This ensures that the thermal model maintains a high degree of fit under different seasons and outdoor temperature conditions. At the same time, the correction process is logically clear, computationally simple, and engineering-ready. It not only guarantees the realism and accuracy of the thermal characteristic simulation but also gives the model good temperature adaptability and operating condition versatility. This provides stable, reliable, and more accurate thermal model support for subsequent hydraulic-thermal coupling modeling and overall power topology equivalent analysis.

[0026] Optionally, the step of performing hydraulic-thermal coupling on the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each of the water pipe components based on a preset hydraulic-thermal coupling coefficient to obtain the power topology equivalent model corresponding to the heating network includes:

[0027] Based on the preset hydraulic-thermal coupling coefficient, the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe element are coupled to obtain multiple power equivalent models.

[0028] Based on the connection relationship of each water pipe component in the heating network, the various power equivalent models are combined to obtain the corresponding power topology equivalent model.

[0029] By adopting the above technical solution, the hydraulic and thermal models of individual water pipe components are first integrated using the hydraulic-thermal coupling coefficient to obtain a unified power equivalent model. Then, all power equivalent models are combined and integrated according to the actual topology of the heating network to fully restore the unidirectional coupling physical essence of hydraulic-driven heat in the heating network. The dispersed unit models are upgraded into a globally unified power topology equivalent model, which not only retains the hydraulic and thermal dynamic characteristics and temperature adaptive capabilities of each pipe, but also realizes the entire network to be computable, simulable, and scalable. This significantly reduces the modeling and solving difficulty of multi-energy flow coupled systems, while being fully compatible with power system analysis methods and scheduling platforms. It significantly improves the overall coherence, calculation accuracy, and engineering practical value of the model, providing a solid and reliable unified model support for heat-electricity coordinated operation, load forecasting, and optimized regulation.

[0030] Optionally, the power equivalent model is specifically as follows:

[0031] ;

[0032] ;

[0033] in, Due to water resistance, This is the dynamic correction coefficient for flow velocity. Let be the coefficient of friction of the pipeline. This represents the mass flow rate baseline value corresponding to the velocity baseline value. The hydraulic-thermal coupling coefficient is... The density of water, For cross-section, The inner diameter of the pipe. It has a watery feel. As a water pressure source, It is the acceleration due to gravity. The inclination angle of the pipe. For heat flow, The hydraulic-thermal coupling coefficient is... For the specific heat of water, The mass flow rate of water, Excess temperature, For thermal resistance, This is the ambient temperature correction factor. The heat dissipation coefficient of the pipe. For thermal conductivity, For heat sensation, It is the heat capacity.

[0034] A second aspect of the present invention provides a power topology equivalent modeling system for a heating network, comprising:

[0035] The first analogy module is used to divide the heating network into multiple water pipe components, and to perform hydraulic circuit equivalent analogy on each of the water pipe components to obtain multiple hydraulic circuit equivalent models.

[0036] The second analogy module is used to perform thermal circuit equivalent analogies on each of the water pipe components to obtain multiple thermal circuit equivalent models.

[0037] The coupling module is used to perform hydraulic-thermal coupling on the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe element based on a preset hydraulic-thermal coupling coefficient, so as to obtain the power topology equivalent model corresponding to the heating network.

[0038] A third aspect of the present invention provides an electronic device, including a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the power topology equivalent modeling method for heating networks as described in any of the preceding claims.

[0039] The fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed, implements the power topology equivalent modeling method for a heating network as described in any of the preceding claims.

[0040] The fifth aspect of the present invention provides a computer program product comprising a computer program stored on a non-transitory computer-readable storage medium, the computer program comprising program instructions, wherein, when the program instructions are executed by a computer, the computer performs the power topology equivalent modeling method for a heating network as described in any of the preceding claims.

[0041] As can be seen from the above technical solutions, the present invention has the following advantages:

[0042] This invention divides the heating network into multiple water pipe components, performs hydraulic circuit equivalent analogies on each component to obtain multiple hydraulic circuit equivalent models, and performs thermal circuit equivalent analogies on each component to obtain multiple thermal circuit equivalent models. Based on a preset hydraulic-thermal coupling coefficient, the hydraulic and thermal circuit equivalent models corresponding to each water pipe component are hydraulically and thermally coupled to obtain the corresponding power topology equivalent model of the heating network. This overcomes the technical problems of traditional heating network modeling methods, which mainly rely on mechanistic analysis, resulting in complex parameter identification, low computational efficiency, and reduced reliability of heating network operation. Compared with traditional heating network modeling methods, this invention obtains hydraulic and thermal equivalent models for each water pipe component by performing hydraulic and thermal circuit equivalent analogies. Then, based on a preset hydraulic-thermal coupling coefficient, the hydraulic and thermal equivalent models corresponding to each water pipe component are hydraulically and thermally coupled to obtain the power topology equivalent model of the heating network. This ensures that the power topology equivalent model takes into account the hydraulic and thermal coupling relationship, improving the accuracy and efficiency of heating network modeling. This provides reliable technical support for subsequent heating network optimization and fault diagnosis, and enhances the reliability of heating network operation. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a flowchart illustrating the steps of a power topology equivalent modeling method for a heating network provided in Embodiment 1 of the present invention.

[0045] Figure 2 This is a flowchart illustrating the steps of a power topology equivalent modeling method for a heating network provided in Embodiment 2 of the present invention.

[0046] Figure 3This is a schematic diagram of the equivalent topology of the hydraulic circuit equivalent model of the water pipe component provided in Embodiment 2 of the present invention.

[0047] Figure 4 This is a schematic diagram of the equivalent topology of the thermal circuit equivalent model of the water pipe component provided in Embodiment 2 of the present invention.

[0048] Figure 5 This is a structural block diagram of an equivalent power topology modeling system for a heating network provided in Embodiment 3 of the present invention;

[0049] Figure 6 This is a structural block diagram of an electronic device provided in Embodiment 4 of the present invention. Detailed Implementation

[0050] This invention provides a method and system for equivalent power topology modeling of heating networks, which addresses the technical problem that traditional heating network modeling methods mainly rely on mechanistic analysis, but suffer from complex parameter identification and low computational efficiency, thus reducing the reliability of heating network operation.

[0051] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0052] Please see Figure 1 , Figure 1 The flowchart illustrates the steps of a power topology equivalent modeling method for a heating network provided in Embodiment 1 of the present invention.

[0053] This invention provides a method for equivalent electrical topology modeling of a heating network, comprising:

[0054] Step 101: Divide the heating network into multiple water pipe components, and perform hydraulic circuit equivalent analogies on each water pipe component to obtain multiple hydraulic circuit equivalent models.

[0055] Water pipe components refer to independent pipe segment units formed by breaking down the heating network according to the consistency of pipe parameters and the requirements of topological connection.

[0056] The hydraulic circuit equivalent model refers to the equivalent model that represents the relationship between hydraulic parameters such as water flow, water pressure, water resistance, and water sense of water pipe components in the form of a circuit.

[0057] Hydraulic circuit equivalence refers to the process of converting a hydraulic model into a circuit form by matching hydraulic parameters (flow rate, pressure, water resistance, water inductance, etc.) with circuit parameters (current, voltage, resistance, inductance, etc.) according to specific rules.

[0058] In this embodiment of the invention, the heating network is divided into multiple water pipe components based on pipe diameter, length, laying conditions and topological connection relationship. Hydraulic circuit equivalent analogy is performed on each water pipe component (i.e., establishing the correspondence between the hydraulic characteristics of the water pipe component and the electrical characteristics of the circuit component, converting the hydraulic parameters into equivalent electrical parameters, and describing the hydraulic phenomenon through a circuit model) to obtain multiple hydraulic circuit equivalent models.

[0059] In another embodiment, the heating network is divided into multiple water pipe elements. Based on energy conservation and mass conservation, a water flow difference-pressure drop model is constructed for each water pipe element. Based on preset circuit-water circuit mapping rules, circuit equivalent analogies are performed on each water flow difference-pressure drop model to obtain multiple initial hydraulic circuit equivalent models. Preset dynamic flow velocity correction coefficients are used to correct the water resistance model and water induction model of each initial hydraulic circuit equivalent model, resulting in multiple hydraulic circuit equivalent models.

[0060] It should be noted that dividing the heating network into multiple water pipe components and performing hydraulic circuit equivalent analogies on each component yields multiple hydraulic circuit equivalent models. This approach decomposes the complex hydraulic dynamics of the heating network into standardized, reusable unit models. By leveraging mature power topology analysis methods and circuit calculation logic, the difficulty of parameter identification and solution complexity in hydraulic modeling is significantly reduced. Simultaneously, it accurately characterizes the pressure loss, inertial delay, and excitation characteristics of water flow in the pipes, making the hydraulic conditions of the network simulating, calculable, and scalable. Furthermore, it establishes a clear coupling interface with the thermal process, providing stable and reliable underlying support for the subsequent construction of the overall power topology equivalent model, effectively improving modeling efficiency, calculation accuracy, and engineering applicability.

[0061] Step 102: Perform thermal circuit equivalent analogies on each water pipe component to obtain multiple thermal circuit equivalent models.

[0062] Thermodynamic circuit equivalent analogy refers to the process of mapping the thermodynamic parameters (heat flow, temperature difference, thermal resistance, etc.) in a thermodynamic system to the electrical parameters (current, voltage, resistance, etc.) in a circuit system according to preset rules, transforming the thermodynamic model into a circuit form, and realizing the simplified analysis and calculation of thermodynamic characteristics.

[0063] In the embodiments of the present invention, thermal circuit equivalent analogies are performed on each water pipe component (i.e., establishing the correspondence between the thermal characteristics of the water pipe component and the electrical characteristics of the circuit component, converting thermal parameters (such as heat flow and excess temperature) into equivalent electrical parameters (such as current and voltage), and describing the heat transfer and change process through a circuit model), resulting in multiple thermal circuit equivalent models.

[0064] In another embodiment, the ambient temperature of each water pipe component is obtained, and a thermal circuit model of each water pipe component is constructed based on energy conservation. Based on preset circuit-thermal circuit mapping rules, circuit equivalent analogies are performed on each thermal circuit model to obtain multiple initial thermal circuit equivalent models. The initial thermal circuit equivalent models are then corrected according to the ambient temperature to obtain multiple thermal circuit equivalent models.

[0065] It should be noted that by performing thermal circuit equivalent analogies on each water pipe component, multiple thermal circuit equivalent models are obtained. This enables the unified mapping of complex thermal dynamic processes in the heating network, such as heat transfer, temperature decay, thermal inertia, and heat dissipation loss, into a mature circuit topology. Parameters such as heat flow, excess temperature, thermal resistance, thermal inductance, and heat capacity are respectively equivalent to current, voltage, resistance, inductance, and capacitance, achieving standardized and modular modeling of the thermal process. This significantly reduces the difficulty of identifying thermal circuit parameters and solving equations, accurately reflecting the time delay, loss, and energy storage characteristics of pipeline heat transmission. It adapts to dynamic changes under different ambient temperatures and flow conditions, and forms a unified topology highly compatible with the hydraulic circuit equivalent model. This provides a stable, scalable, and easily computable thermal layer model support for hydraulic-thermal coupling modeling and overall power topology equivalent analysis, greatly improving the accuracy, versatility, and engineering practicality of the simulation of the thermal characteristics of the heating network.

[0066] Step 103: Based on the preset hydraulic-thermal coupling coefficient, perform hydraulic-thermal coupling on the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe component to obtain the power topology equivalent model corresponding to the heating network.

[0067] The hydraulic-thermal coupling coefficient refers to a parameter determined in advance based on the actual operating conditions of the heating network, used to quantify the interaction between water flow and heat transfer.

[0068] It should be noted that the specific expression for the hydraulic-thermal coupling coefficient is:

[0069]

[0070] in, The hydraulic-thermal coupling coefficient is... The mass flow rate of water, This is the mass flow rate base value corresponding to the velocity base value.

[0071] In this embodiment of the invention, based on a preset hydraulic-thermal coupling coefficient, the hydraulic circuit equivalent model and the thermal circuit equivalent model corresponding to each water pipe component are coupled to obtain multiple electrical equivalent models. Following the original topology of the heating network, the electrical equivalent models of all water pipe components are sequentially connected through nodes to obtain the corresponding electrical topology equivalent model.

[0072] It should be noted that, based on the preset hydraulic-thermal coupling coefficient, hydraulic-thermal coupling is performed on the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe component to obtain the power topology equivalent model corresponding to the heating network. This model can accurately quantify the unidirectional driving force and parameter influence of the hydraulic process on heat transfer, and unify the originally separate water circuit and thermal circuit models into a complete and self-consistent power topology equivalent system, realizing the synchronous simulation and joint solution of the hydraulic and thermal characteristics of the heating network. Relying on the mature topology analysis, power flow calculation and simulation methods of power systems, the complexity and computational cost of multi-energy flow coupling modeling are significantly reduced, while retaining the real physical characteristics of the heating network such as dynamic time delay, loss, and inertia, effectively improving the model's adaptability to actual operating conditions and prediction accuracy. This coupled model can be directly connected to power grid analysis tools and dispatching platforms, providing a unified model foundation for heat-power coordinated control, load forecasting, operation optimization and fault diagnosis, significantly enhancing the engineering practicality and scalability of multi-energy system interconnection and coordinated optimization in the context of the energy internet.

[0073] It is worth mentioning that by employing the methods in steps 101-103, the complex heating network can be decomposed into standardized water pipe components, completing equivalent analogies for hydraulic and thermal circuits respectively. Then, precise coupling is achieved through the hydraulic-thermal coupling coefficient, unifying the entire hydraulic and thermal process of the heating network into an electrical topology model. This significantly reduces the difficulty of parameter identification and computational complexity in multi-energy flow modeling, accurately reproducing the real physical characteristics of water flow, heat transfer, thermal inertia, heat loss, and the unidirectional coupling of hydraulic and thermal processes, thus significantly improving the modeling accuracy and computational efficiency of the heating network. Simultaneously, relying on mature circuit analysis methods, the heating network becomes simulable, computable, and scalable, providing a unified model foundation for heat-electricity coordinated scheduling, load forecasting, and operation optimization, effectively enhancing the engineering practicality of multi-energy system interconnection and coordinated optimization under the energy internet.

[0074] In this embodiment of the invention, the heating network is divided into multiple water pipe components. Hydraulic circuit equivalent models are obtained for each water pipe component through hydraulic circuit analogy. Similarly, thermal circuit equivalent models are obtained for each water pipe component through thermal circuit analogy. Based on a preset hydraulic-thermal coupling coefficient, hydraulic-thermal coupling is performed on the hydraulic and thermal circuit equivalent models corresponding to each water pipe component to obtain the corresponding power topology equivalent model of the heating network. This overcomes the technical problems of traditional heating network modeling methods, which mainly rely on mechanistic analysis but suffer from complex parameter identification and low computational efficiency, thus reducing the reliability of the heating network operation. Compared with traditional heating network modeling methods, this invention obtains hydraulic and thermal equivalent models for each water pipe component by performing hydraulic and thermal circuit equivalent analogies. Then, based on a preset hydraulic-thermal coupling coefficient, the hydraulic and thermal equivalent models corresponding to each water pipe component are hydraulically and thermally coupled to obtain the power topology equivalent model of the heating network. This ensures that the power topology equivalent model takes into account the hydraulic and thermal coupling relationship, improving the accuracy and efficiency of heating network modeling. This provides reliable technical support for subsequent heating network optimization and fault diagnosis, and enhances the reliability of heating network operation.

[0075] Please see Figure 2 , Figure 2 The flowchart illustrates the steps of a power topology equivalent modeling method for a heating network provided in Embodiment 2 of the present invention.

[0076] This invention provides a method for equivalent electrical topology modeling of a heating network, comprising:

[0077] Step 201: Divide the heating network into multiple water pipe components, and perform hydraulic circuit equivalent analogies on each water pipe component to obtain multiple hydraulic circuit equivalent models.

[0078] Further, step 201 includes the following sub-steps:

[0079] S11. Based on the conservation of energy and mass, construct the water flow difference-water pressure drop model for each water pipe component.

[0080] Energy conservation refers to the principle that within the water pipe components of a heating network, the fluid is considered an incompressible homogeneous fluid, and the mass flow rate flowing into the water pipe component per unit time is equal to the mass flow rate flowing out, with no accumulation of fluid mass inside the component, satisfying the fluid flow continuity equation. This ensures the flow boundary constraints for modeling water flow difference and water pressure drop.

[0081] Mass conservation refers to the fact that during the flow of fluid in a water pipe component, the total mechanical energy remains constant, and the sum of the fluid's pressure energy, kinetic energy, and energy consumed to overcome friction resistance and local resistance remains unchanged. At the same time, in thermal modeling, the heat carried by the fluid, the heat dissipation of the pipe to the outside, and the changes in internal energy satisfy the thermodynamic energy balance, thereby constructing a quantitative relationship between heat transfer and pressure loss.

[0082] In this embodiment of the invention, mass conservation equations and momentum conservation equations for the one-dimensional flow process of water pipe components are constructed. Based on the fact that water is an incompressible fluid (i.e., a fluid with approximately constant density that does not change significantly with pressure), a differential equation for the density of water with respect to time and space is constructed. According to the momentum conservation equation, there is a quadratic relationship between the water flow velocity in the pipe and the pressure difference across it. The mass conservation equations and momentum conservation equations for the one-dimensional flow process of the water pipe components are then rewritten to obtain the one-dimensional flow equations. Based on these one-dimensional flow equations, a water flow difference-pressure drop model is constructed for each water pipe component.

[0083] In another embodiment, the water in the heating network is regarded as an incompressible fluid, and a single water pipe element is taken as an independent analysis object. Combining the continuity equation and momentum equation of the internal flow of the pipe, the pipe friction resistance, local resistance and pipe structure parameters are introduced to derive the quantitative relationship between the water flow change and pressure loss at the inlet and outlet of the water pipe element, and then a water flow difference-water pressure drop model suitable for circuit equivalent analogy is established.

[0084] It should be noted that the mass conservation equation and momentum conservation equation for a one-dimensional flow process are as follows:

[0085]

[0086] Where t represents time and x represents space. The density of water, For the pressure of water, For the speed of water, Let be the coefficient of friction of the pipeline. The inner diameter of the pipe. The angle of inclination of the pipe.

[0087] The differential equation for the density of water with respect to time and space is as follows:

[0088]

[0089] The quadratic expression for the relationship between the water flow velocity in the pipe and the pressure difference across it is as follows:

[0090]

[0091] in, This is the baseline value for water flow velocity. It is a cross-section.

[0092] The one-dimensional flow equation is as follows:

[0093]

[0094] The water flow difference-water pressure drop model is as follows:

[0095]

[0096] in, This refers to the length of the water pipe component.

[0097] It is worth mentioning that by using the two classic physical laws of energy conservation and mass conservation as the modeling basis, and strictly adhering to the actual flow law of incompressible fluids in heating pipelines, the constructed water flow difference-water pressure drop model has clear physical meaning and rigorous mathematical relationship. It can accurately reflect the intrinsic relationship between water flow changes and water pressure loss in the pipeline, ensuring the accuracy and reliability of hydraulic modeling from the root. At the same time, it provides a stable and reliable mechanistic basis for subsequent circuit equivalent analogy, parameter correction and coupling calculation, avoiding the errors brought by empirical models, and greatly improving the scientific nature and engineering applicability of the overall hydraulic analysis.

[0098] S12. Based on the preset circuit-water circuit mapping rules, the circuit equivalent analogy is performed on each water flow difference-water pressure drop model to obtain multiple initial hydraulic circuit equivalent models.

[0099] The circuit-water mapping rule refers to the pre-established rules used to establish the correspondence between circuit parameters and water parameters. The core is to equate the water flow difference to the current difference, the water pressure drop to the voltage drop, the hydraulic resistance to the resistance, and the water flow inertia to the inductance. It is the core basis for the equivalent analogy of hydraulic circuits.

[0100] In the embodiments of the present invention, see Figure 3 As shown in Table 1, based on the preset circuit-water circuit mapping rules, the circuit equivalent analogy is performed on each water flow difference-water pressure drop model to obtain multiple initial hydraulic circuit equivalent models.

[0101] Table 1

[0102]

[0103] In another embodiment, according to the preset circuit-water circuit mapping rules, the flow difference in the water flow difference model is mapped to the current in the circuit, and the pressure difference in the water pressure drop model is mapped to the voltage in the circuit. Based on the structure and flow characteristics of the water pipe components, the hydraulic relationships such as parallel, series and branch connections are directly converted into the corresponding circuit topology. The hydraulic parameters are quantitatively mapped through circuit component parameters such as resistance and inductance, thereby transforming the complex hydraulic mathematical model into an initial hydraulic circuit equivalent model with a clear structure and explicit physical meaning.

[0104] As needs further explanation, the initial hydraulic circuit equivalent model is as follows:

[0105]

[0106] It is worth mentioning that by relying on the preset circuit-water circuit mapping rules, the hydraulic model is directly equivalent to a circuit form, and the complex nonlinear relationship between water flow difference and water pressure drop is transformed into a mature and easy-to-solve circuit topology. This greatly reduces the difficulty of analyzing and solving hydraulic characteristics, and allows the hydraulic process of the heating network to be directly calculated using mature power system algorithms. The modeling process is standardized and highly versatile, and can quickly generate an initial hydraulic circuit equivalent model with a clear structure and explicit physical meaning. This provides a simple, efficient, and easy-to-implement basic model for subsequent parameter correction and coupled modeling, significantly improving the overall modeling efficiency and ease of use.

[0107] S13. Based on the preset dynamic correction coefficient for flow velocity, the water resistance model and water sensing model of each initial hydraulic circuit equivalent model are corrected to obtain multiple hydraulic circuit equivalent models.

[0108] The dynamic flow velocity correction factor refers to the correction factor calculated based on the Reynolds number of the water flow, the friction characteristics of the pipe, and the baseline value of the flow velocity, used for dynamic calibration of water resistance and water sensing parameters.

[0109] In this embodiment of the invention, a preset flow velocity dynamic correction coefficient is used to correct the water resistance model and water sensing model of each initial hydraulic circuit equivalent model to obtain multiple hydraulic circuit equivalent models.

[0110] In another embodiment, the water resistance parameters and water induction parameters in the initial hydraulic circuit equivalent model are calibrated one by one by using a preset flow velocity dynamic correction coefficient to compensate for the model deviation caused by flow velocity changes, pipe turbulence and flow inertia, so that the equivalent hydraulic parameters are more in line with the dynamic flow characteristics of the actual pipe network, and finally a hydraulic circuit equivalent model that can truly reflect the pipe resistance and water flow inertia is obtained.

[0111] It is worth mentioning that by using a preset dynamic velocity correction coefficient to accurately correct the water resistance model and water sensing model in the initial hydraulic circuit equivalent model, the parameter deviations caused by the turbulent flow characteristics, velocity changes and pipe friction in the actual pipe network are effectively compensated. This makes the hydraulic circuit equivalent model more in line with the real hydraulic working conditions, significantly improves the accuracy of water resistance and water sensing parameters and the reliability of the model, and at the same time enables the hydraulic circuit equivalent model to have dynamic adaptive capability, which can be adapted to different flow rates and different pipe conditions. This provides a more accurate and more applicable hydraulic unit model for subsequent hydraulic-thermal coupling and overall power topology equivalent modeling.

[0112] It should be noted that the expression for the dynamic correction coefficient for flow velocity is as follows:

[0113]

[0114] in, Let Reynolds number be 1. For the speed of water, The kinematic viscosity of water, This is the dynamic correction coefficient for flow velocity.

[0115] It should be noted that the equivalent model of the hydraulic circuit is as follows:

[0116]

[0117] It should be noted that, based on the physical principles of energy conservation and mass conservation, an accurate water flow difference-pressure drop model is first established. Then, through circuit-water circuit mapping rules, the complex hydraulic characteristics are transformed into an intuitive and easy-to-understand circuit form, forming an initial hydraulic circuit equivalent model. Finally, the dynamic correction coefficient of flow velocity is used to dynamically calibrate the water resistance and water induction, fully restoring the frictional resistance, inertial characteristics, and actual turbulent flow conditions of the pipeline water flow. This significantly reduces the difficulty of nonlinear solution and parameter identification in hydraulic modeling, improves the adaptability of the hydraulic circuit equivalent model to different flow velocities and different pipeline conditions, and makes the hydraulic circuit equivalent model more closely match the actual pipeline network operation characteristics. This provides an accurate, stable, and reusable hydraulic unit foundation for subsequent hydraulic-thermal coupling modeling, while being compatible with mature power system analysis methods, significantly improving the accuracy, efficiency, and engineering practicality of heating network hydraulic simulation.

[0118] Step 202: Obtain the ambient temperature of each water pipe component, and construct the thermal circuit model of each water pipe component based on the law of conservation of energy.

[0119] Ambient temperature refers to the temperature of the air surrounding the heating pipes, and it is an important external parameter that affects the heat dissipation intensity of the pipes.

[0120] In this embodiment of the invention, the ambient temperature of each water pipe component is obtained, and a thermal circuit model of each water pipe component is constructed based on the law of conservation of energy (i.e., the energy conservation equation of the one-dimensional flow process of the water pipe component in the thermal pipeline).

[0121] In another embodiment, the ambient temperature of each water pipe component is obtained. Combining the structural parameters, heat dissipation area, and thermophysical properties of the fluid of the water pipe component, the processes of water flow heat transfer and pipe heat dissipation are transformed into heat flow transfer paths. By quantifying the energy loss and conversion relationship in the heat transfer process, a thermal path model that can accurately reflect the thermal characteristics of the water pipe component is constructed, and the thermal path model corresponding to each water pipe component is obtained.

[0122] It should be noted that the thermal circuit model is as follows:

[0123]

[0124] in, For the specific heat of water, Excess temperature, This is the heat dissipation coefficient of the pipe.

[0125] It is worth mentioning that by constructing a thermal circuit model with real-time ambient temperature as input and energy conservation as the core mechanism, the actual physical processes of heat transfer, heat dissipation, and temperature change in water within the heating pipeline are accurately reproduced. The model fully considers the actual impact of external temperature on heat transfer, giving the thermal circuit model clear physical meaning and high credibility. This ensures the accuracy of thermal modeling from the ground up, providing rigorous and reliable mechanistic support for subsequent circuit equivalence comparison and temperature adaptive correction, and significantly improving the authenticity and scientific nature of the overall thermal characteristic analysis.

[0126] Step 203: Based on the preset circuit thermal mapping rules, perform circuit equivalent analogies on each thermal circuit model to obtain multiple initial thermal circuit equivalent models.

[0127] The thermal-circuit mapping rule refers to the pre-defined rules used to establish the correspondence between thermal circuit parameters and circuit parameters. The core is to equate heat flow to current, excess temperature to voltage, thermal resistance to resistance, thermal capacitance to capacitance, thermal inductance to inductance, and thermal conductance to conductance. It is the core basis for the transformation of the thermal circuit model to the circuit model.

[0128] In the embodiments of the present invention, see Figure 4 As shown in Table 2, based on the preset circuit thermal mapping rules, circuit equivalent analogies are performed on each thermal circuit model to obtain multiple initial thermal circuit equivalent models.

[0129] Table 2

[0130]

[0131] Where C is capacitance and R is resistance, C is capacitance.

[0132] In another embodiment, for each thermal circuit model, referring to the preset circuit thermal circuit mapping rules, the heat flux density in the thermal circuit model is mapped to the current in the circuit, and the temperature difference is mapped to the voltage in the circuit. Based on the heat transfer topology of the water pipe components, the series, parallel and heat transfer branch relationships are converted into the corresponding circuit connection topology. The thermal parameters are quantitatively mapped using the circuit thermal resistance, thermal capacity and other component parameters, thereby transforming the complex heat transfer mathematical model into an initial thermal circuit equivalent model with a clear structure and clear physical meaning.

[0133] It should be noted that the initial equivalent model of the thermal circuit is as follows:

[0134]

[0135] It is worth mentioning that by using preset circuit-thermal mapping rules, the thermal circuit model is directly equivalent to a circuit form, transforming the complex problems of heat transfer, heat loss, and thermal inertia into a mature and simple circuit topology. This significantly reduces the difficulty of thermal modeling and equation solving, and allows for direct reuse of power system analysis methods for simulation calculations. The modeling process is standardized and universal, and can quickly obtain an initial thermal circuit equivalent model with clear physical meaning and standard structure. This provides an efficient, easy-to-use, and highly adaptable thermal foundation model for subsequent temperature correction and hydraulic-thermal coupling, significantly improving overall modeling efficiency and engineering feasibility.

[0136] Step 204: Correct the initial thermal circuit equivalent model according to each ambient temperature to obtain multiple thermal circuit equivalent models.

[0137] Further, step 204 includes the following sub-steps:

[0138] S21. Perform difference processing on each ambient temperature and the preset reference ambient temperature to obtain multiple first differences.

[0139] The reference ambient temperature refers to the standard reference value of ambient temperature pre-set based on the heating network design specifications, historical operating data, and typical operating conditions, and is set to 20.

[0140] In this embodiment of the invention, the difference between each ambient temperature and a preset reference ambient temperature is calculated to obtain multiple first differences. For example, for each ambient temperature, the corresponding first difference = ambient temperature - reference ambient temperature.

[0141] It should be noted that by using the benchmark ambient temperature as a unified reference standard to calculate the temperature difference, the deviation between the actual ambient temperature and the benchmark operating condition can be accurately quantified, providing a clear and unified numerical basis for subsequent temperature correction. This avoids the direct introduction of model errors due to ambient temperature fluctuations, making the correction process more targeted and objective. At the same time, it ensures that the correction logic of the thermal models of each water pipe component is consistent, improving the stability and comparability of the overall model.

[0142] S22. Multiply the absolute value of each first difference with a preset feedback coefficient to obtain multiple first multiplication values.

[0143] The feedback coefficient refers to a pre-set proportional coefficient based on historical operating data of the heating network, sensitivity analysis of thermal circuit model parameters, and actual control needs. It is used to quantify the degree of influence of ambient temperature deviation on the correction of thermal circuit model parameters, and its value is 0.02.

[0144] In this embodiment of the invention, the product between the absolute value of each first difference and a preset feedback coefficient is calculated to obtain multiple first multiplication values. For example, for each first difference, the corresponding first multiplication value = the absolute value of the first difference * the feedback coefficient.

[0145] It should be noted that by taking the absolute value of the first difference and multiplying it by the feedback coefficient, the influence of the temperature deviation direction is eliminated, and the correction intensity can be adjusted proportionally to make the correction amount reasonably matched with the actual temperature difference, avoiding over-correction or under-correction. This makes the model's response to changes in ambient temperature more stable and controllable, while ensuring that the correction calculation is simple, efficient, and easy to implement in engineering, further improving the working condition adaptability and simulation accuracy of the thermal model.

[0146] S23. Each first multiplication value is summed with the preset temperature correction reference value to obtain multiple ambient temperature correction coefficients.

[0147] The ambient temperature correction factor refers to the adjustment factor used for temperature-adaptive calibration of the parameters of the equivalent model of the thermal circuit, which is dynamically adjusted as the ambient temperature changes.

[0148] In this embodiment of the invention, the sum between each first multiplier and a preset temperature correction reference value (with a value of 1) is calculated to obtain multiple ambient temperature correction coefficients. For example, for each first multiplier, the corresponding ambient temperature correction coefficient = first multiplier + temperature correction reference value.

[0149] It should be noted that by superimposing the first multiplier with the temperature correction baseline value to form the ambient temperature correction coefficient, the model foundation under the baseline operating conditions is preserved, while adaptive adjustment can be made according to the actual ambient temperature deviation. This makes the physical meaning of the ambient temperature correction coefficient clear and its value stable and reliable. It avoids the drastic fluctuations of the correction coefficient without a baseline, and can accurately reflect the degree of influence of different ambient temperatures on the thermal model, providing continuous, reasonable and engineering-applicable correction parameters for subsequent model correction.

[0150] S24. Each initial thermal circuit equivalent model is corrected using a different ambient temperature correction coefficient to obtain multiple thermal circuit equivalent models.

[0151] In this embodiment of the invention, the corresponding initial thermal circuit equivalent models are corrected according to each ambient temperature correction coefficient (i.e., the key parameters such as thermal resistance, thermal inductance, and thermal capacity in the initial thermal circuit equivalent models are temperature adaptively calibrated to eliminate the calculation deviation caused by ambient temperature fluctuations in the simulation of heat transfer characteristics, so that the initial thermal circuit equivalent models can accurately match the actual heating thermal conditions under different outdoor temperatures), resulting in multiple thermal circuit equivalent models.

[0152] It should be noted that the equivalent model of the thermal circuit is as follows:

[0153]

[0154] It should be noted that the expression for the ambient temperature correction factor is as follows:

[0155]

[0156] in, This is the ambient temperature correction factor. The ambient temperature.

[0157] It is worth mentioning that S21-S24 uses a reference ambient temperature as a standard process to generate adaptive ambient temperature correction coefficients through difference, multiplication, and summation. This process accurately calibrates the initial thermal circuit equivalent model, quantifies the impact of ambient temperature on heat transfer throughout the process, and automatically compensates for simulation errors caused by temperature fluctuations. This ensures that the thermal model maintains a high degree of fit under different seasons and outdoor temperature conditions. At the same time, the correction process is logically clear, computationally simple, and engineering-ready. It not only ensures the realism and accuracy of the thermal characteristic simulation but also gives the model good temperature adaptability and operating condition versatility. This provides stable, reliable, and more accurate thermal model support for subsequent hydraulic-thermal coupling modeling and overall power topology equivalent analysis.

[0158] It is worth mentioning that by constructing a thermal circuit model that closely matches the actual heat transfer process with energy conservation as the core, and by using circuit thermal circuit mapping rules to transform complex thermodynamic characteristics into standardized circuit forms, and then combining real-time ambient temperature to adaptively correct the initial model, it is possible to accurately characterize the heat transfer, heat loss, thermal inertia, and temperature decay characteristics of heating pipelines. This effectively eliminates the errors caused by changes in ambient temperature in the thermal simulation, significantly reduces the complexity of equations and the difficulty of parameter identification in thermal modeling, and makes the model highly match the actual heating conditions. At the same time, it forms a circuit topology that is isomorphically compatible with the hydraulic model, providing reliable, accurate, and adaptive thermal unit support for subsequent hydraulic-thermal coupling and overall power topology equivalent modeling, significantly improving the accuracy, adaptability, and engineering practicality of thermal simulation.

[0159] Step 205: Based on the preset hydraulic-thermal coupling coefficient, perform hydraulic-thermal coupling on the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe component to obtain the power topology equivalent model corresponding to the heating network.

[0160] Furthermore, step 205 includes the following sub-steps:

[0161] S31. Based on the preset hydraulic-thermal coupling coefficient, couple the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe component to obtain multiple power equivalent models.

[0162] The hydraulic-thermal coupling coefficient refers to the core coefficient used to quantitatively correlate hydraulic parameters and thermal parameters, and to realize the collaborative calculation of hydraulic and thermal models.

[0163] In this embodiment of the invention, based on a preset hydraulic-thermal coupling coefficient, the hydraulic circuit equivalent model and the thermal circuit equivalent model corresponding to each water pipe component are coupled to obtain multiple power equivalent models.

[0164] In another embodiment, for each water pipe component, a hydraulic circuit equivalent model and a thermal circuit equivalent model are used. Using a preset hydraulic-thermal coupling coefficient as the core link, the water flow parameters (such as flow rate and pressure) output by the hydraulic circuit equivalent model are correlated and matched with the temperature and heat flow parameters output by the thermal circuit equivalent model. This clarifies the quantitative correspondence between the hydraulic and thermal parameters, eliminates parameter conflicts between the two types of models, and achieves the synergistic integration of hydraulic and thermal characteristics, ultimately forming an electrical equivalent model that combines hydraulic drive and heat transfer characteristics.

[0165] It should be noted that by using a preset hydraulic-thermal coupling coefficient, the hydraulic circuit equivalent model and the thermal circuit equivalent model are precisely associated and coupled, realistically restoring the unidirectional coupling physical characteristics of hydraulic-driven heat in the heating network. This integrates the originally independent hydraulic and thermal models into a unified electrical equivalent model, enabling synchronous simulation and joint calculation of water flow and heat transfer processes. This effectively improves the integrity and accuracy of the unit model while maintaining the consistency and compatibility of the circuit topology. It provides high-precision and highly adaptable standardized unit support for the subsequent joint construction of the overall electrical topology equivalent model, significantly improving the reliability and computational efficiency of multi-energy flow coupling modeling.

[0166] It should be noted that the power equivalence model is as follows:

[0167] ;

[0168] ;

[0169] in, Due to water resistance, This is the dynamic correction coefficient for flow velocity. Let be the coefficient of friction of the pipeline. This represents the mass flow rate baseline value corresponding to the velocity baseline value. The hydraulic-thermal coupling coefficient is... The density of water, For cross-section, The inner diameter of the pipe. It has a watery feel. As a water pressure source, It is the acceleration due to gravity. The inclination angle of the pipe. For heat flow, The hydraulic-thermal coupling coefficient is... For the specific heat of water, The mass flow rate of water, Excess temperature, For thermal resistance, This is the ambient temperature correction factor. The heat dissipation coefficient of the pipe. For thermal conductivity, For heat sensation, It is the heat capacity.

[0170] S32. Based on the connection relationship of each water pipe component in the heating network, the various power equivalent models are combined to obtain the corresponding power topology equivalent model.

[0171] In this embodiment of the invention, based on the connection relationship of each water pipe component in the heating network, each power equivalent model is connected in series along the pipe direction to obtain the corresponding power topology equivalent model.

[0172] In another embodiment, according to the actual connection logic of the heating network, the power equivalent models corresponding to each water pipe component are connected in series and parallel in an orderly manner, clarifying the connection relationship between each component, so that the dispersed unit models form a complete topology system, while ensuring the coordinated unity of hydraulic and thermal characteristics, realizing the overall simulation of the hydraulic and thermal state of the entire heating network, and obtaining the corresponding power topology equivalent model.

[0173] It is worth mentioning that by using the hydraulic-thermal coupling coefficient to fuse the hydraulic and thermal models of individual water pipe components, a unified power equivalent model is obtained. Then, according to the actual topology of the heating network, all power equivalent models are combined and integrated to fully restore the unidirectional coupling physical essence of hydraulic-driven heat in the heating network. The scattered unit models are upgraded into a globally unified power topology equivalent model, which not only retains the hydraulic and thermal dynamic characteristics and temperature adaptive capabilities of each pipe, but also realizes the entire network to be computable, simulable, and scalable. This significantly reduces the modeling and solving difficulty of multi-energy flow coupled systems. At the same time, it is fully compatible with power system analysis methods and scheduling platforms, significantly improving the overall coherence, calculation accuracy, and engineering practical value of the model, and providing a solid and reliable unified model support for heat-electricity coordinated operation, load forecasting, and optimized control.

[0174] In this embodiment of the invention, the heating network is divided into multiple water pipe components. Hydraulic circuit equivalent models are obtained for each water pipe component through hydraulic circuit analogy. Similarly, thermal circuit equivalent models are obtained for each water pipe component through thermal circuit analogy. Based on a preset hydraulic-thermal coupling coefficient, hydraulic-thermal coupling is performed on the hydraulic and thermal circuit equivalent models corresponding to each water pipe component to obtain the corresponding power topology equivalent model of the heating network. This overcomes the technical problems of traditional heating network modeling methods, which mainly rely on mechanistic analysis but suffer from complex parameter identification and low computational efficiency, thus reducing the reliability of the heating network operation. Compared with traditional heating network modeling methods, this invention obtains hydraulic and thermal equivalent models for each water pipe component by performing hydraulic and thermal circuit equivalent analogies. Then, based on a preset hydraulic-thermal coupling coefficient, the hydraulic and thermal equivalent models corresponding to each water pipe component are hydraulically and thermally coupled to obtain the power topology equivalent model of the heating network. This ensures that the power topology equivalent model takes into account the hydraulic and thermal coupling relationship, improving the accuracy and efficiency of heating network modeling. This provides reliable technical support for subsequent heating network optimization and fault diagnosis, and enhances the reliability of heating network operation.

[0175] Please see Figure 5 , Figure 5 This is a structural block diagram of an equivalent power topology modeling system for a heating network provided in Embodiment 3 of the present invention.

[0176] This invention provides a power topology equivalent modeling system for heating networks, comprising:

[0177] The first analogy module 301 is used to divide the heating network into multiple water pipe components, perform hydraulic circuit equivalent analogy on each water pipe component, and obtain multiple hydraulic circuit equivalent models.

[0178] The second analogy module 302 is used to perform thermal circuit equivalent analogies on each water pipe component to obtain multiple thermal circuit equivalent models.

[0179] The coupling module 303 is used to perform hydraulic-thermal coupling on the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe component based on the preset hydraulic-thermal coupling coefficient, so as to obtain the power topology equivalent model corresponding to the heating network.

[0180] Furthermore, the first analogy module 301 includes:

[0181] The first construction submodule is used to construct the water flow difference-water pressure drop model for each water pipe component based on the laws of energy conservation and mass conservation.

[0182] The first analogy submodule is used to perform circuit equivalent analogies on each water flow difference-water pressure drop model based on the preset circuit-water circuit mapping rules, so as to obtain multiple initial hydraulic circuit equivalent models.

[0183] The first correction submodule is used to correct the water resistance model and water sensing model of each initial hydraulic circuit equivalent model based on the preset flow velocity dynamic correction coefficient, so as to obtain multiple hydraulic circuit equivalent models.

[0184] Furthermore, the second analogy module 302 includes:

[0185] The second construction submodule is used to obtain the ambient temperature of each water pipe component and construct the thermal circuit model of each water pipe component according to the law of conservation of energy.

[0186] The second analogy submodule is used to perform circuit equivalent analogies on each thermal circuit model based on preset circuit thermal mapping rules, so as to obtain multiple initial thermal circuit equivalent models.

[0187] The second correction submodule is used to correct the initial thermal circuit equivalent model according to each ambient temperature, so as to obtain multiple thermal circuit equivalent models.

[0188] Furthermore, the second correction submodule includes:

[0189] The difference unit is used to perform difference processing between each ambient temperature and the preset reference ambient temperature to obtain multiple first differences;

[0190] The multiplication unit is used to multiply the absolute value of each first difference with a preset feedback coefficient to obtain multiple first multiplication values;

[0191] The summation unit is used to sum each first multiplication value with a preset temperature correction reference value to obtain multiple ambient temperature correction coefficients.

[0192] The correction unit is used to correct the corresponding initial thermal circuit equivalent model by using various ambient temperature correction coefficients to obtain multiple thermal circuit equivalent models.

[0193] Furthermore, the coupling module 303 includes:

[0194] The coupling submodule is used to couple the hydraulic circuit equivalent model and the thermal circuit equivalent model corresponding to each water pipe component according to the preset hydraulic-thermal coupling coefficient, so as to obtain multiple power equivalent models.

[0195] The combined submodule is used to combine various power equivalent models based on the connection relationships of each water pipe component in the heating network to obtain the corresponding power topology equivalent model.

[0196] Furthermore, the power equivalent model is as follows:

[0197] ;

[0198] ;

[0199] in, Due to water resistance, This is the dynamic correction coefficient for flow velocity. Let be the coefficient of friction of the pipeline. This represents the mass flow rate baseline value corresponding to the velocity baseline value. The hydraulic-thermal coupling coefficient is... The density of water, For cross-section, The inner diameter of the pipe. It has a watery feel. As a water pressure source, It is the acceleration due to gravity. The inclination angle of the pipe. For heat flow, The hydraulic-thermal coupling coefficient is... For the specific heat of water, The mass flow rate of water, Excess temperature, For thermal resistance, This is the ambient temperature correction factor. The heat dissipation coefficient of the pipe. For thermal conductivity, For heat sensation, It is the heat capacity.

[0200] Please see Figure 6 , Figure 6 This is a structural block diagram of an electronic device provided in Embodiment 4 of the present invention.

[0201] An electronic device according to an embodiment of the present invention includes: a memory 401 and a processor 402. The memory 401 stores a computer program. When the computer program is executed by the processor 402, the processor 402 executes the power topology equivalent modeling method of the heating network as described in any of the above embodiments.

[0202] Memory 401 may be an electronic memory such as flash memory, EEPROM (Electrically Erasable Programmable Read-Only Memory), EPROM, hard disk, or ROM. Memory 401 has storage space 403 for program code 413 for performing any of the method steps described above. For example, storage space 403 for program code may include individual program codes 413 for implementing the various steps in the methods described above. This program code may be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, CDs, memory cards, or floppy disks. The program code may be compressed, for example, in a suitable form. When run by a computing processing device, this code causes the computing processing device to perform the various steps in the methods described above. This program code may be read from or written to one or more computer program products. These computer program products include program code carriers such as hard disks, CDs, memory cards, or floppy disks. The program code may be compressed, for example, in a suitable form. When this code is run by a computing device, it causes the computing device to perform the various steps in the power topology equivalent modeling method for the heating network described above.

[0203] Embodiment 5 of the present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the power topology equivalent modeling method for heating networks as described in any of the above embodiments.

[0204] Embodiment 6 of the present invention also provides a computer program product, which includes a computer program stored on a non-transitory computer-readable storage medium. The computer program includes program instructions, wherein when the program instructions are executed by a computer, the computer performs the power topology equivalent modeling method for the heating network as described in any of the above embodiments.

[0205] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0206] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces, or indirect coupling or communication connection between apparatuses or units, and may be electrical, mechanical, or other forms.

[0207] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0208] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0209] If the integrated unit is implemented as 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 invention, 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. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0210] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for equivalent electrical topology modeling of a heating network, characterized in that, include: The heating network is divided into multiple water pipe components, and hydraulic circuit equivalent analogies are performed on each of the water pipe components to obtain multiple hydraulic circuit equivalent models. Each of the water pipe components was subjected to thermal circuit equivalent analogy to obtain multiple thermal circuit equivalent models; Based on the preset hydraulic-thermal coupling coefficient, the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe component are hydraulically and thermally coupled to obtain the power topology equivalent model corresponding to the heating network.

2. The method for equivalent electrical topology modeling of a heating network according to claim 1, characterized in that, The step of performing hydraulic circuit equivalent analogies on each of the water pipe components to obtain multiple hydraulic circuit equivalent models includes: Based on the principles of energy conservation and mass conservation, a water flow difference-water pressure drop model is constructed for each of the aforementioned water pipe components; Based on the preset circuit-water circuit mapping rules, the circuit equivalent analogy is performed on each of the water flow difference-water pressure drop models to obtain multiple initial hydraulic circuit equivalent models. Based on the preset dynamic flow velocity correction coefficient, the water resistance model and water sensing model of each of the initial hydraulic circuit equivalent models are corrected to obtain multiple hydraulic circuit equivalent models.

3. The method for equivalent electrical topology modeling of a heating network according to claim 1, characterized in that, The step of performing thermal circuit equivalent analogies on each of the water pipe components to obtain multiple thermal circuit equivalent models includes: The ambient temperature of each water pipe component is obtained, and a thermal circuit model of each water pipe component is constructed based on the law of conservation of energy. Based on the preset circuit thermal mapping rules, circuit equivalent analogies are performed on each of the thermal circuit models to obtain multiple initial thermal circuit equivalent models. The initial thermal circuit equivalent model is modified according to each of the aforementioned ambient temperatures to obtain multiple thermal circuit equivalent models.

4. The method for equivalent electrical topology modeling of a heating network according to claim 3, characterized in that, The step of correcting the initial thermal circuit equivalent model according to each of the respective ambient temperatures to obtain multiple thermal circuit equivalent models includes: Each ambient temperature is compared with a preset reference ambient temperature to obtain multiple first differences; The absolute value of each of the first differences is multiplied by a preset feedback coefficient to obtain multiple first multiplication values; Each of the first multiplication values ​​is summed with a preset temperature correction reference value to obtain multiple ambient temperature correction coefficients; The corresponding initial thermal circuit equivalent models are corrected by using the respective ambient temperature correction coefficients to obtain multiple thermal circuit equivalent models.

5. The method for equivalent power topology modeling of a heating network according to claim 1, characterized in that, The step of performing hydraulic-thermal coupling on the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each of the water pipe components based on a preset hydraulic-thermal coupling coefficient to obtain the power topology equivalent model corresponding to the heating network includes: Based on the preset hydraulic-thermal coupling coefficient, the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe element are coupled to obtain multiple power equivalent models. Based on the connection relationship of each water pipe component in the heating network, the various power equivalent models are combined to obtain the corresponding power topology equivalent model.

6. The method for equivalent electrical topology modeling of a heating network according to claim 5, characterized in that, The power equivalent model is specifically as follows: ； ； in, Due to water resistance, This is the dynamic correction coefficient for flow velocity. Let be the coefficient of friction of the pipeline. This represents the mass flow rate baseline value corresponding to the velocity baseline value. The hydraulic-thermal coupling coefficient is... The density of water, For cross-section, The inner diameter of the pipe. It has a watery feel. As a water pressure source, It is the acceleration due to gravity. The inclination angle of the pipe. For heat flow, The hydraulic-thermal coupling coefficient is... For the specific heat of water, The mass flow rate of water, Excess temperature, For thermal resistance, This is the ambient temperature correction factor. The heat dissipation coefficient of the pipe. For thermal conductivity, For heat sensation, It is the heat capacity.

7. A power topology equivalent modeling system for a heating network, characterized in that, include: The first analogy module is used to divide the heating network into multiple water pipe components, and to perform hydraulic circuit equivalent analogy on each of the water pipe components to obtain multiple hydraulic circuit equivalent models. The second analogy module is used to perform thermal circuit equivalent analogies on each of the water pipe components to obtain multiple thermal circuit equivalent models. The coupling module is used to perform hydraulic-thermal coupling on the hydraulic circuit equivalent model and thermal circuit equivalent model corresponding to each water pipe element based on a preset hydraulic-thermal coupling coefficient, so as to obtain the power topology equivalent model corresponding to the heating network.

8. An electronic device, characterized in that, The system includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor performs the steps of the power topology equivalent modeling method for a heating network as described in any one of claims 1-6.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed, it implements the power topology equivalent modeling method for heating networks as described in any one of claims 1-6.

10. A computer program product, characterized in that, The computer program product includes a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, wherein when the program instructions are executed by a computer, the computer performs the power topology equivalent modeling method for heating networks as described in any one of claims 1-6.

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