Method and device for adjusting heat output of heat supply unit, electronic equipment and storage medium

Abstract

The application provides a heat supply unit heat output adjustment method and device, electronic equipment and storage medium, belonging to the technical field of heat supply units, comprising: determining a target peak regulation capacity; if the target peak regulation capacity is a top peak capacity, reducing the heat output of a first type of heat supply unit and / or increasing the heat output of a second type of heat supply unit; if the target peak regulation capacity is a deep peak regulation capacity, increasing the heat output of the first type of heat supply unit and / or reducing the heat output of the second type of heat supply unit when the first type of heat supply unit is running in the lower boundary negative correlation region of the operation domain; wherein the upper boundary of the operation domain of the first type of heat supply unit is negatively correlated, the lower boundary is negatively correlated first and positively correlated later, and the upper and lower boundaries of the operation domain of the second type of heat supply unit are positively correlated. The application can improve the top peak capacity and deep peak regulation capacity of the heat supply unit of the thermal power plant.

Description

Technical Field

[0001] This invention relates to the field of heating unit technology, and in particular to a method, device, electronic equipment and storage medium for regulating the heat output of a heating unit. Background Technology

[0002] To achieve dual carbon targets, the power plant has carried out large-scale carbon reduction, flexibility, and heating system upgrades on its heating units. Among these upgrades, the peak-shaving capacity of the heating units is significantly insufficient, resulting in significant pressure on power supply and an inability to effectively support residential heating needs. Summary of the Invention

[0003] This invention provides a method, device, electronic equipment, and storage medium for regulating the heat output of a heating unit, in order to solve the technical problem of insufficient peak-shaving capacity of heating units in the prior art.

[0004] This invention provides a method for regulating the heat output of a heating unit, comprising: Determine the target peak-shaving capacity; If the target peak-shaving capacity is the peak-shaving capacity, then reduce the heat output of the first type of heating unit and / or increase the heat output of the second type of heating unit; If the target peak-shaving capacity is a deep peak-shaving capacity, then when the first type of heating unit is operating in the negative correlation region at the lower boundary of the operating domain, the heat output of the first type of heating unit will be increased, and / or the heat output of the second type of heating unit will be reduced. Among them, the upper boundary of the operating domain of the first type of heating unit is negatively correlated and the lower boundary is initially negatively correlated and then positively correlated, while the upper and lower boundaries of the operating domain of the second type of heating unit are both positively correlated.

[0005] According to a method for adjusting the heat output of a heating unit provided by the present invention, the heat output reduction of the first type of heating unit is equal to the heat output increase of the second type of heating unit.

[0006] According to a method for regulating the heat output of a heating unit provided by the present invention, if the target peak-shaving capacity is the peak-shaving capacity, after reducing the heat output of the first type of heating unit and increasing the heat output of the second type of heating unit, the method further includes: If the heat output of the first type of heating unit is greater than the first threshold, then the heat output of the first type of heating unit will be further reduced. If the heat output of the second type of heating unit is less than the second threshold, then the heat output of the second type of heating unit will continue to increase.

[0007] According to a method for adjusting the heat output of a heating unit provided by the present invention, the increased heat output of the first type of heating unit is equal to the decreased heat output of the second type of heating unit.

[0008] According to a method for regulating the heat output of a heating unit provided by the present invention, if the target peak-shaving capacity is a deep peak-shaving capacity, after increasing the heat output of the first type of heating unit and decreasing the heat output of the second type of heating unit when the first type of heating unit is operating in the negative correlation region at the lower boundary of the operating domain, the method further includes: If the heat output of the first type of heating unit is less than the third threshold, then the heat output of the first type of heating unit will continue to increase. If the heat output of the second type of heating unit is greater than the fourth threshold, then the heat output of the second type of heating unit will be further reduced.

[0009] According to a method for adjusting the heat output of a heating unit provided by the present invention, the method of reducing the heat output of a first type of heating unit and / or rolling up the heat output of a second type of heating unit includes: With the goal of maximizing the peak capacity of the thermal power plant, under the constraints of the conditions, the heat output of the first type of heating units is reduced in a rolling manner, and / or the heat output of the second type of heating units is increased in a rolling manner.

[0010] According to a method for adjusting the heat output of a heating unit provided by the present invention, the step of increasing the heat output of a first type of heating unit and / or decreasing the heat output of a second type of heating unit includes: With the goal of maximizing the deep peak-shaving capacity of the thermal power plant, under the constraints of the conditions, the heat output of the first type of heating units is increased in a rolling manner, and / or the heat output of the second type of heating units is decreased in a rolling manner.

[0011] The present invention also provides a heating unit heat output regulating device, comprising: The determination module is used to determine the target peak-shaving capability; The adjustment module is used to reduce the heat output of the first type of heating unit and / or increase the heat output of the second type of heating unit if the target peak-shaving capacity is the peak capacity. And if the target peak-shaving capacity is a deep peak-shaving capacity, then when the first type of heating unit is operating in the negative correlation region at the lower boundary of the operating domain, the heat output of the first type of heating unit is increased, and / or the heat output of the second type of heating unit is decreased. Among them, the upper boundary of the operating domain of the first type of heating unit is negatively correlated and the lower boundary is initially negatively correlated and then positively correlated, while the upper and lower boundaries of the operating domain of the second type of heating unit are both positively correlated.

[0012] The present invention also provides an electronic device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the program to implement the heat output regulation method of the heating unit as described above.

[0013] The present invention also provides a non-transitory computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the heating unit heat output regulation method as described above.

[0014] The heating unit heat output regulation method, device, electronic equipment, and storage medium provided by this invention can improve the peak-shaving capacity of a heating unit by reducing the heat output of a first-type heating unit and / or increasing the heat output of a second-type heating unit when it is necessary to improve the peak-shaving capacity of the heating unit; and can improve the deep peak-shaving capacity of the heating unit by increasing the heat output of the first-type heating unit and / or reducing the heat output of the second-type heating unit when the first-type heating unit is operating in the negative correlation region at the lower boundary of the operating domain. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 This is a flowchart illustrating the heating unit heat output adjustment method provided by the present invention.

[0017] Figure 2 This is a schematic diagram of the external characteristics of the cylinder-cutting modified heating unit provided by the present invention.

[0018] Figure 3 This is a schematic diagram of the external characteristics of the bypass-modified heating unit provided by the present invention.

[0019] Figure 4 This is a schematic diagram of the external characteristics of the high back pressure modified heating unit and the optical axis modified heating unit provided by the present invention.

[0020] Figure 5 This is a diagram illustrating the peak capacity enhancement mechanism of the first type of heating unit provided by the present invention.

[0021] Figure 6 This is a diagram illustrating the peak capacity enhancement mechanism of the second type of heating unit provided by the present invention.

[0022] Figure 7 This is a diagram illustrating the mechanism for enhancing the peak-shaving capacity of the first type of heating unit provided by the present invention.

[0023] Figure 8 This is a diagram illustrating the mechanism for enhancing the peak-shaving capacity of the second type of heating unit provided by the present invention.

[0024] Figure 9This is a schematic diagram of the initial regulation capacity change curve of the heating unit provided by the present invention.

[0025] Figure 10 This is a diagram illustrating the mechanism for further enhancing the peak capacity of the first type of heating unit provided by this invention.

[0026] Figure 11 This is a diagram illustrating the mechanism for further enhancing the peak capacity of the second type of heating unit provided by the present invention.

[0027] Figure 12 This is a diagram illustrating the mechanism for further enhancing the peak-shaving capability of the first type of heating unit provided by this invention.

[0028] Figure 13 This is a diagram illustrating the mechanism for further enhancing the peak-shaving capability of the second type of heating unit provided by the present invention.

[0029] Figure 14 This is a schematic diagram illustrating the impact of the energy storage / discharge duration on peak shaving capability and available energy storage / discharge capacity provided by the present invention. Figure 15 This is a schematic diagram illustrating the impact of the energy storage / discharge duration on energy storage / discharge capacity and peaking capability provided by the present invention.

[0030] Figure 16 This is a schematic diagram illustrating the impact of the energy storage / discharge duration on energy storage / discharge capacity and deep peak-shaving capability provided by the present invention.

[0031] Figure 17 This is a schematic diagram illustrating the multi-level dynamic correlation between the heat network storage / release regulation potential, the unit's thermal output range, and the unit's regulation capability, as provided by this invention.

[0032] Figure 18 This is a schematic diagram of the method for optimizing the overall regulation capacity of multiple units and heating network in a thermal power plant provided by the present invention.

[0033] Figure 19 This is a schematic diagram of the structure of the heating unit heat output regulating device provided by the present invention.

[0034] Figure 20 This is a schematic diagram of the structure of the electronic device provided by the present invention. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0036] The following is combined with Figures 1-20 This invention describes the heating unit heat output regulation method, device, electronic equipment, and storage medium provided by the present invention.

[0037] Figure 1 This is a flowchart illustrating the heating unit heat output adjustment method provided by the present invention, including but not limited to steps S1, S2 and S3.

[0038] Step S1: Determine the target peak-shaving capacity.

[0039] The target peak-shaving capability is either top-peak capability or deep peak-shaving capability.

[0040] Peak load capacity refers to the ability of heating units to increase their electrical output during peak electricity demand periods. This capability is crucial for ensuring the stable operation of the power grid under peak load conditions. Electrical output refers to the electrical power that the heating unit outputs to the power grid at a given moment.

[0041] Deep peak-shaving capacity refers to the ability of heating units to reduce their power output during periods of low electricity demand (such as at night or when new energy sources such as wind and solar power are generating a lot of electricity). This ability is of great significance for accommodating more fluctuating new energy sources and avoiding wind and solar power curtailment.

[0042] Step S2: If the target peak-shaving capacity is the peak-shaving capacity, then reduce the heat output of the first type of heating unit and / or increase the heat output of the second type of heating unit.

[0043] Step S3: If the target peak-shaving capacity is deep peak-shaving capacity, then when the first type of heating unit is operating in the negative correlation region at the lower boundary of the operating domain, the heat output of the first type of heating unit is increased, and / or the heat output of the second type of heating unit is decreased. Among them, the upper boundary of the operating domain of the first type of heating unit is negatively correlated, and the lower boundary is initially negatively correlated and then positively correlated. The upper and lower boundaries of the operating domain of the second type of heating unit are both positively correlated.

[0044] The first type of heating unit of the present invention may include a cylinder-cutting modified heating unit, a bypass modified heating unit, and a cylinder-cutting + bypass modified heating unit.

[0045] Low-pressure cylinder cut-off involves modifying valves and the control system to close the butterfly valve of the medium-low pressure cylinder steam pipe during deep peak shaving, significantly reducing the steam intake of the low-pressure cylinder and enabling the extraction-condensing unit to operate in back-pressure heating mode. Taking a 330MW unit with a five-extraction heating load of 400MW as an example, the deep regulation capacity of the heating unit can be increased by an additional 20% after the cylinder cut-off modification, while the regulation capacity remains unchanged. A schematic diagram of the external characteristics of the modified heating unit is shown below. Figure 2 As shown, H represents thermal output and P represents electrical output. Thermal output refers to the heat power output of the heating unit to the heating network at a certain moment.

[0046] Bypass modification allows some main and reheat steam to be supplied externally for heating through the high-pressure and intermediate / low-pressure cylinder bypass systems, reducing the unit's thermal-electric coupling strength and improving its deep regulation capability. Taking a 330MW unit with a five-extraction heating load of 400MW as an example, the deep regulation capability can be further increased by 16% after the modification, while the overall regulation capability remains unchanged. A schematic diagram of the external characteristics of the bypass-modified heating unit is shown below. Figure 3 As shown.

[0047] from Figure 2 and Figure 3 It can be seen that the upper boundary of the operating domain of the first type of heating unit is negatively correlated, and the lower boundary is initially negatively correlated and then positively correlated.

[0048] The second type of heating unit of the present invention may include high back pressure modified heating unit and optical axis modified heating unit.

[0049] High back pressure retrofit involves removing 2-3 stages of the low-pressure cylinder flow passage to increase exhaust steam pressure and temperature for heating. Low-pressure cylinder shaftless retrofit involves replacing the low-pressure rotor with a shaft, using the exhaust steam from the intermediate-pressure cylinder for heating. After the retrofit, the unit's cooling loss is reduced, and its peak-shaving capacity is increased by 30-40%. External characteristic diagrams of high back pressure retrofitted heating units and shaftless retrofitted heating units are shown below. Figure 4 As shown.

[0050] from Figure 4 It can be seen that the upper and lower boundaries of the operating domain of the second type of heating unit are both positively correlated.

[0051] Type I heating units only require an increase in peak capacity when operating at the upper boundary of their operating domain. Therefore, to increase the peak capacity of Type I heating units, heat output needs to be reduced. Thus, the following can be obtained: Figure 5 The diagram shown illustrates the peak capacity enhancement mechanism of the first type of heating unit. The reduced heat output is ΔH1, the peak capacity changes from Pt1 to Pt2, and the increase in peak capacity is ΔPt1.

[0052] To enhance the peak-load capacity of the second type of heating units, it is necessary to increase the heat output. Therefore, the following can be obtained: Figure 6 The diagram shown is a mechanism diagram for improving the peak capacity of the second type of heating unit. The increased heat output is ΔH2, the peak capacity changes from Pt3 to Pt4, and the improvement in peak capacity is ΔPt2.

[0053] If the peak capacity of both the first-class and second-class heating units is increased simultaneously, the total increase in the peak capacity of the thermal power plant will be ΔPt = ΔPt1 + ΔPt2.

[0054] The first type of heating units only require enhanced deep peak-shaving capability when operating at the lower boundary of their operating domain. Therefore, to enhance the deep peak-shaving capability of the first type of heating units, it is necessary to increase heat output when they are operating in the negatively correlated region of the lower boundary of their operating domain, and decrease heat output when they are operating in the positively correlated region of the lower boundary of their operating domain. This leads to the following... Figure 7 The diagram shown illustrates the mechanism for enhancing the deep peak-shaving capacity of the first type of heating unit. When the first type of heating unit operates at the lower boundary of the operating domain, the increased heat output is ΔH1', and the deep peak-shaving capacity changes from Pt1' to Pt2', with the increase in deep peak-shaving capacity being ΔPt1'.

[0055] To enhance the peak-shaving capability of the second type of heating units, it is necessary to reduce heat output. Therefore, the following can be obtained: Figure 8 The diagram shown illustrates the mechanism for improving the deep peak-shaving capacity of the second type of heating unit. The reduced heat output is ΔH2', the peak-shaving capacity changes from Pt3' to Pt4', and the improvement in deep peak-shaving capacity is ΔPt2'.

[0056] If the deep peak-shaving capacity of both the first-class and second-class heating units is improved simultaneously, the total increase in the deep peak-shaving capacity of the thermal power plant will be ΔPt'=ΔPt1'+ΔPt2'.

[0057] As can be seen from the above, the heating unit heat output regulation method of the present invention can improve the peak capacity of the heating unit by reducing the heat output of the first type of heating unit and / or increasing the heat output of the second type of heating unit when it is necessary to improve the peak capacity of the heating unit; and can improve the deep peak capacity of the heating unit by increasing the heat output of the first type of heating unit and / or reducing the heat output of the second type of heating unit when the first type of heating unit is operating in the negative correlation region at the lower boundary of the operating domain.

[0058] In one embodiment, the reduced heat output of the first type of heating unit can be equal to the increased heat output of the second type of heating unit.

[0059] That is, ΔH1 = ΔH2. This allows for the targeted transfer of heat output from the first type of heating unit to the second type of heating unit, thereby synergistically enhancing the peak capacity of both types of units.

[0060] In one embodiment, the increased heat output of the first type of heating unit can be equal to the decreased heat output of the second type of heating unit.

[0061] That is, ΔH1'=ΔH2'. This allows for the directional transfer of heat output from the second type of heating units to the first type of heating units, thereby synergistically enhancing the deep peak-shaving capabilities of both types of units.

[0062] This invention also constructs a set of coupled equations for main steam flow, multi-stage heating steam extraction, and power generation for different types of deep-tunnel retrofitted units based on the electro-thermal output coupling mechanism. This reveals the dynamic mapping relationship between time-varying heat load and unit regulation capability, and yields the initial regulation capability variation curves for each unit, such as... Figure 9 As shown.

[0063] Specifically, based on the changes in the thermodynamic parameters of the steam at the inlet and outlet of different components, and combined with the law of conservation of energy, the power generation or heating capacity per unit mass flow rate of steam in different components can be calculated.

[0064] ; 'a' represents the power generation or heating capacity per unit mass of steam flow. To improve the power generation efficiency of the high, medium, and low pressure cylinders of the steam turbine. The enthalpy of the inlet for different components. The outlet enthalpy for different components.

[0065] In the steam-water phase change heat transfer process at a heat exchange station, heat is mainly released during the steam condensation phase change. Therefore, when the steam flow rate is low, the total heat transfer is basically proportional to it; however, as the flow rate continues to increase, the heat transfer growth will gradually saturate (which is uneconomical). In energy planning, if we assume that the heat exchanger area is large enough, we can consider that the unit's heat output is proportional to the steam flow rate, and in this case, the heating power corresponding to a unit mass of steam flow rate is... It can be represented as: ; The inlet steam specific enthalpy on the hot fluid side of the heat exchanger. The specific enthalpy of the liquid water at the outlet on the hot fluid side of the heat exchanger.

[0066] It can be seen that the electrical and thermal output of the heating unit are not directly coupled, but are indirectly related through parameters such as steam flow under different steam process modification methods. Therefore, the electrical-thermal output coupling characteristics can be described from the operating principle of the steam turbine.

[0067] After obtaining the electro-thermal output coupling characteristics of the heating units, and based on the operating domains of different modified units and the dynamic mapping relationship between time-varying heat load and unit regulation capacity, the initial regulation capacity variation curves of each unit can be obtained. For a combined heat and power plant containing two types of units, the heat loads of the two types of units can be mutually transferred according to different regulation needs to obtain the regulation capacity for coordinated improvement of internal heat output of multiple units. If the regulation capacity of one type of unit still has room for improvement after internal coordination, the regulation capacity can be further released through the heat storage and release characteristics of the heating system.

[0068] Therefore, in one embodiment, after step S2, the heating unit heat output adjustment method of the present invention may further include: If the heat output of the first type of heating unit is greater than the first threshold, then the heat output of the first type of heating unit will continue to be reduced. If the heat output of the second type of heating unit is less than the second threshold, then the heat output of the second type of heating unit will continue to be increased.

[0069] After step S3, the heating unit heat output adjustment method of the present invention may further include: If the heat output of the first type of heating unit is less than the third threshold, then the heat output of the first type of heating unit will continue to increase. If the heat output of the second type of heating unit is greater than the fourth threshold, then the heat output of the second type of heating unit will continue to be reduced.

[0070] The first threshold can be 0. If the heat output of the first type of heating unit is greater than the first threshold, it means that there is still room for further reduction in the heat output of the first type of heating unit. Continuing to reduce the heat output of the first type of heating unit at the upper boundary of the operating domain can further improve the peak capacity of the first type of heating unit. The further improvement amount is... Figure 10 ΔP2 in the equation. At this point, the heating system reduces its heat output, and the heating network is in a heat release state.

[0071] The second threshold can be 500MW. If the thermal output of the second type of heating units is less than the second threshold, it means that there is still room for further increase in the thermal output of the second type of heating units. Continuing to increase the thermal output of the second type of heating units can further enhance their peak capacity. The further increase is... Figure 11 ΔP2 in the equation. At this point, the heating system increases its heat output, and the heating network is in a heat storage state.

[0072] The third threshold can be 150MW. If the thermal output of the first-class heating units is less than the third threshold, it means that there is still room for further increase in the thermal output of the first-class heating units. Continuing to increase the thermal output of the first-class heating units at the lower boundary of the operating domain can further enhance their deep peak-shaving capability. The further increase should be... Figure 12 ΔP2 in the equation. At this point, the heating system increases its heat output, and the heating network is in a heat storage state.

[0073] The fourth threshold can be 150MW. If the heat output of the second-class heating units is greater than the fourth threshold, it means that there is still room for further reduction in the heat output of the second-class heating units. Further reduction in the heat output of the second-class heating units can further enhance their deep peak-shaving capability. The further increase could be... Figure 13 ΔP2 in the equation. At this point, the heating system reduces its heat output, and the heating network is in a heat release state.

[0074] like Figure 14As shown, based on the quantitative evaluation of the energy storage characteristics of the heating network, it can be seen that the longer the duration of continued improvement in regulation capacity, the smaller the energy storage / release power provided by the heating network, the more the energy storage / release capacity gradually saturates, and the smaller the increase in peak and deep peak regulation capacity ΔP2. Specifically, as shown... Figure 15 , 16 As shown.

[0075] In one embodiment, step S2, reducing the heat output of the first type of heating unit and / or gradually increasing the heat output of the second type of heating unit, may specifically include: With the goal of maximizing the peak capacity of the thermal power plant, under the constraints of the conditions, the heat output of the first type of heating units is reduced on a rolling basis, and / or the heat output of the second type of heating units is increased on a rolling basis.

[0076] In step S3, increasing the heat output of the first type of heating unit and / or decreasing the heat output of the second type of heating unit may specifically include: With the goal of maximizing the deep peak-shaving capacity of the thermal power plant, under the constraints of the conditions, the heat output of the first type of heating units is increased on a rolling basis, and / or the heat output of the second type of heating units is decreased on a rolling basis.

[0077] Figure 17 This invention provides a multi-level dynamic correlation between "heat network storage / heat release regulation potential - unit thermal output range - unit regulation capability". The optimization objective is to maximize peak / deep peak regulation capability, and the constraints specifically include electrothermal coupling constraints, power plant heat supply balance constraints, storage / heat release mutual exclusion constraints, storage / heat release duration constraints, unit power generation and heat generation power constraints, energy conservation constraints, periodic constraints, and real-time storage upper and lower limits constraints.

[0078] Electrothermal coupling constraint: k is the unit number within the thermal power plant, and t is the time. Let t be the electrical output of the k-th heating unit. Let be the heat output of the k-th heating unit at time t. a and b are the coefficients required to represent P and H using the convex hull method, and m is the vertex number of the operating domain. For the k-th heating unit, the coefficient at the m-th heat output peak at time t is... This is the coefficient of the m-th power output peak of the k-th heating unit at time t.

[0079] Thermal power plant heat supply balance constraints: Let be the net heat storage rate of the thermal power plant at time t. Let t be the total heat output of the thermal power plant at time t. Let be the heat release rate of the thermal power plant at time t. Let be the heat storage rate of the thermal power plant at time t. Let be the heat release rate of the k-th heating unit at time t. Let be the heat storage rate of the k-th heating unit at time t.

[0080] Storage and release thermal mutual exclusion constraint: τ is a 0-1 variable. Let τ be the heat storage τ of the k-th heating unit at time t. Let τ be the heat release τ of the k-th heating unit at time t.

[0081] Storage / release duration constraints: For ongoing evaluation time.

[0082] Power generation and heat production capacity constraints of the generating unit: , These are the lower limit and upper limit of the heat production power of the k-th heating unit, respectively. , These represent the lower and upper limits of the power generation of the k-th heating unit, respectively. Both limits can be obtained from the energy storage characteristics of the heating network.

[0083] Using the heating system as a conventional thermal storage device presents the following constraints: Energy conservation constraint: Let t be the energy stored in the heating network at time t, and Δt be the time interval.

[0084] Periodic constraints For the initial energy storage of the heating network during the cycle, This is for the energy storage of the heating network at the end of the cycle.

[0085] Real-time storage capacity upper and lower limits constraints: This represents the minimum energy storage capacity of the heating network. This represents the maximum energy storage capacity of the heating network at the beginning of the cycle.

[0086] The aforementioned constraints are closely related to the collaborative and continued capability enhancement strategies outlined earlier. These constraints, acting as boundary constraints, transform the qualitative enhancement mechanism into a quantifiable mathematical framework, ensuring the feasibility and accuracy of the collaborative and continued capability enhancement strategies in practical operation. Figure 17 The rolling optimization method illustrated provides specific evaluation boundaries and optimization basis. By embedding these constraints, the optimization process can dynamically coordinate the interaction between multiple units and the heating network, thereby maximizing the overall regulation capacity while ensuring heating demand, making the aforementioned improvement schemes more operational and adaptable.

[0087] Figure 18 This invention provides a method for optimizing the overall regulation capacity of multiple units and the heating network within a thermal power plant. First, initial timeframes and thermal and electrical parameters are set. Then, the energy storage characteristics of the heating system and the heating network are quantitatively evaluated. The parameters obtained from the quantitative evaluation—the limit values ​​of the heating system's energy storage / discharge power and capacity—are then used in the thermal power plant for joint optimization of the multiple units and the heating network. After completing the optimization for the current timeframe, the optimization results are substituted into the next timeframe, continuously optimizing subsequent electrical and thermal outputs to obtain the electrical and thermal output results that maximize regulation capacity.

[0088] In summary, this invention, through systematic analysis of the regulation capacity enhancement mechanism of heating units with different retrofitting methods, reveals the intrinsic relationship between multi-unit coordinated scheduling and the energy storage characteristics of the heating system, providing reliable support for power plants to tap the deep peak-shaving potential of their units while ensuring heat supply to users. Because the topology of the bus-type heating network is known, the heat flow model of the network can be directly generated without manually abstracting and building the model. This method not only guides the technical transformation and operational optimization of existing cogeneration units, improving the flexibility and economy of power plants in the electricity market environment, but also provides technical support for constructing a new decoupled operation mode for heat and power in the power system. It plays a significant role in promoting the clean and low-carbon transformation of energy and achieving dual-carbon goals, effectively enhancing the overall system regulation capacity of the power plant and providing more high-quality resources for the safe and stable operation of the power grid.

[0089] Figure 19 The heating unit heat output regulating device provided by the present invention includes, but is not limited to: The determination module is used to determine the target peak-shaving capability; The adjustment module is used to reduce the heat output of the first type of heating unit and / or increase the heat output of the second type of heating unit if the target peak-shaving capacity is the peak capacity. And if the target peak-shaving capacity is deep peak-shaving capacity, then when the first type of heating unit is operating in the negative correlation region at the lower boundary of the operating domain, the heat output of the first type of heating unit is increased, and / or the heat output of the second type of heating unit is decreased. Among them, the upper boundary of the operating domain of the first type of heating unit is negatively correlated, and the lower boundary is initially negatively correlated and then positively correlated. The upper and lower boundaries of the operating domain of the second type of heating unit are both positively correlated.

[0090] It should be noted that the heating unit heat output regulating device provided by the present invention can execute the heating unit heat output regulating method described in any of the above embodiments during specific operation, which will not be elaborated in this embodiment.

[0091] Figure 20 This is a schematic diagram of the electronic device provided by the present invention. The electronic device may include: a processor, a communication interface, a memory, and a communication bus, wherein the processor, the communication interface, and the memory communicate with each other through the communication bus. The processor can call logical instructions in the memory to execute a method for regulating the heat output of a heating unit. This method includes: determining a target peak-shaving capacity; if the target peak-shaving capacity is a peak-limiting capacity, then reducing the heat output of a first type of heating unit and / or increasing the heat output of a second type of heating unit; if the target peak-shaving capacity is a deep peak-shaving capacity, then increasing the heat output of the first type of heating unit and / or decreasing the heat output of the second type of heating unit when the first type of heating unit is operating in the negatively correlated region at the lower boundary of its operating domain; wherein the upper boundary of the operating domain of the first type of heating unit is negatively correlated, and the lower boundary is initially negatively correlated and then positively correlated, while both the upper and lower boundaries of the operating domain of the second type of heating unit are positively correlated.

[0092] Furthermore, the logical instructions in the aforementioned memory can be implemented as software functional units and sold or used as independent products, and can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or a 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 described in 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.

[0093] On the other hand, the present invention also provides a computer program product, the computer program product including a computer program stored on a non-transitory computer-readable storage medium, the computer program including program instructions, when the program instructions are executed by a computer, the computer is able to execute the heating unit heat output regulation method provided in the above embodiments, the method including: determining a target peak-shaving capacity; if the target peak-shaving capacity is a peak-limiting capacity, then reducing the heat output of a first type of heating unit and / or increasing the heat output of a second type of heating unit; if the target peak-shaving capacity is a deep peak-shaving capacity, then increasing the heat output of the first type of heating unit and / or decreasing the heat output of the second type of heating unit when the first type of heating unit is operating in the negative correlation region of the lower boundary of the operating domain; wherein, the upper boundary of the operating domain of the first type of heating unit is negatively correlated and the lower boundary is initially negatively correlated and then positively correlated, and both the upper and lower boundaries of the operating domain of the second type of heating unit are positively correlated.

[0094] In another aspect, the present invention also provides a non-transitory computer-readable storage medium storing a computer program thereon, which, when executed by a processor, implements the heating unit heat output regulation method provided in the above embodiments. The method includes: determining a target peak-shaving capacity; if the target peak-shaving capacity is a peak-limiting capacity, reducing the heat output of a first type of heating unit and / or increasing the heat output of a second type of heating unit; if the target peak-shaving capacity is a deep peak-shaving capacity, increasing the heat output of the first type of heating unit and / or decreasing the heat output of the second type of heating unit when the first type of heating unit is operating in the negatively correlated region at the lower boundary of its operating domain; wherein the upper boundary of the operating domain of the first type of heating unit is negatively correlated and the lower boundary is initially negatively correlated and then positively correlated, and both the upper and lower boundaries of the operating domain of the second type of heating unit are positively correlated.

[0095] The device embodiments described above are merely illustrative. 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 modules can be selected to achieve the purpose of this embodiment according to actual needs. Those skilled in the art can understand and implement this without any creative effort.

[0096] Through the above description of the embodiments, those skilled in the art can clearly understand that each embodiment can be implemented by means of software plus necessary general-purpose hardware platforms, and of course, it can also be implemented by hardware. Based on this understanding, the above technical solutions, in essence or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product can be stored in a computer-readable storage medium, such as ROM / RAM, magnetic disk, optical disk, etc., and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute the methods described in the various embodiments or some parts of the embodiments.

[0097] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; 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; and these 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 regulating the heat output of a heating unit, characterized in that, include: Determine the target peak-shaving capacity; If the target peak-shaving capacity is the peak-shaving capacity, then reduce the heat output of the first type of heating unit and / or increase the heat output of the second type of heating unit; If the target peak-shaving capacity is a deep peak-shaving capacity, then when the first type of heating unit is operating in the negative correlation region at the lower boundary of the operating domain, the heat output of the first type of heating unit will be increased, and / or the heat output of the second type of heating unit will be reduced. Among them, the upper boundary of the operating domain of the first type of heating unit is negatively correlated and the lower boundary is initially negatively correlated and then positively correlated, while the upper and lower boundaries of the operating domain of the second type of heating unit are both positively correlated.

2. The method for regulating the heat output of a heating unit according to claim 1, characterized in that, The reduction in heat output of the first type of heating unit is equal to the increase in heat output of the second type of heating unit.

3. The method for regulating the heat output of a heating unit according to claim 2, characterized in that, If the target peak-shaving capacity is the peak-shaving capacity, then after reducing the heat output of the first type of heating unit and increasing the heat output of the second type of heating unit, the method further includes: If the heat output of the first type of heating unit is greater than the first threshold, then the heat output of the first type of heating unit will be further reduced. If the heat output of the second type of heating unit is less than the second threshold, then the heat output of the second type of heating unit will continue to increase.

4. The method for regulating the heat output of a heating unit according to claim 1, characterized in that, The increase in heat output of the first type of heating unit is equal to the decrease in heat output of the second type of heating unit.

5. The method for regulating the heat output of a heating unit according to claim 4, characterized in that, If the target peak-shaving capacity is a deep peak-shaving capacity, then after increasing the heat output of the first type of heating unit and decreasing the heat output of the second type of heating unit when the first type of heating unit is operating in the negative correlation region at the lower boundary of the operating domain, the method further includes: If the heat output of the first type of heating unit is less than the third threshold, then the heat output of the first type of heating unit will continue to increase. If the heat output of the second type of heating unit is greater than the fourth threshold, then the heat output of the second type of heating unit will be further reduced.

6. The method for regulating the heat output of a heating unit according to claim 1, characterized in that, The reduction of the heat output of the first type of heating units and / or the rolling increase of the heat output of the second type of heating units include: With the goal of maximizing the peak capacity of the thermal power plant, under the constraints of the conditions, the heat output of the first type of heating units is reduced in a rolling manner, and / or the heat output of the second type of heating units is increased in a rolling manner.

7. The method for regulating the heat output of a heating unit according to claim 1, characterized in that, The increase in the heat output of the first type of heating unit and / or the decrease in the heat output of the second type of heating unit includes: With the goal of maximizing the deep peak-shaving capacity of the thermal power plant, under the constraints of the conditions, the heat output of the first type of heating units is increased in a rolling manner, and / or the heat output of the second type of heating units is decreased in a rolling manner.

8. A heating unit heat output regulating device, characterized in that, include: The determination module is used to determine the target peak-shaving capacity; The adjustment module is used to reduce the heat output of the first type of heating unit and / or increase the heat output of the second type of heating unit if the target peak-shaving capacity is the peak capacity. And if the target peak-shaving capacity is a deep peak-shaving capacity, then when the first type of heating unit is operating in the negative correlation region at the lower boundary of the operating domain, the heat output of the first type of heating unit is increased, and / or the heat output of the second type of heating unit is decreased. Among them, the upper boundary of the operating domain of the first type of heating unit is negatively correlated and the lower boundary is initially negatively correlated and then positively correlated, while the upper and lower boundaries of the operating domain of the second type of heating unit are both positively correlated.

9. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, When the processor executes the computer program, it implements the heating unit heat output regulation method as described in any one of claims 1 to 7.

10. A non-transitory computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the heating unit heat output regulation method as described in any one of claims 1 to 7.

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