An exergy meter system and a measurement method for exergy measurement in a thermal system

Abstract

The present invention discloses a meter system and a metering method for thermal system metering, the method comprising: determining basic indicators for thermal system metering; generating corresponding initial data according to the unbalanced node power, network topology, and pipe network parameters of the thermal system, and solving the thermal system flow; obtaining the node potential vector according to the temperature of each node, thereby calculating the distribution of the thermal system. The meter system is composed of a cloud server, tables distributed throughout the system, and a communication device for realizing data transmission between the tables and the cloud server; the tables are divided into heat source side tables, network side tables, load side tables, and heat storage side tables. The present invention realizes real-time metering of distribution parameters of each link of the thermal system.

Description

Technical Field

[0001] The present invention belongs to the technical field of thermal system effective energy and energy quality analysis, specifically to the field of thermal system, heating system, renewable energy heating, and in particular to a method for thermal system Metered Meter systems and measurement methods. Background Art

[0002] Energy and environmental issues are becoming increasingly serious, and building a thermal system that takes into account the synergy of quantity and quality has become an important part of the energy transformation process. As an important part of energy conversion and supply, the thermal industry is the main industry that consumes fossil energy, which has caused a large number of environmental problems. As a reasonable measure of energy quality, the energy that can theoretically be converted into work or other forms of energy under environmental conditions takes into account both the "quantity" and "quality" of energy. Research on thermal system effective energy and energy quality analysis technology is of great significance to improving the utilization rate of thermal system effective energy, realizing energy transformation, and continuously promoting the construction of a thermal system with coordinated development of energy quantity and quality.

[0003] Thermal system The measurement method is the basis of the thermal system effective energy and energy quality analysis technology, and it clarifies the main links of the system. Distribution and Efficiency, can clearly show the effective energy utilization and the location, type and actual size of effective energy loss, so that targeted measures can be taken to reduce it from planning and design, operation optimization, trading and other aspects. Loss, Improvement efficiency, and promote the advancement of energy transformation and upgrading strategies from the perspective of energy quality. Most of the calculation methods establish black box models from a macroscopic perspective, based on the input and output of the thermal system. Direct calculation cannot clearly reflect the network characteristics of the thermal system and ignores In the flow and distribution of source-grid-load-storage. At the same time, it is impossible to achieve The real-time measurement of each subject link cannot be intuitively displayed. Therefore, it is not conducive to accurately discovering the main links with low effective energy utilization rate and taking targeted measures to reduce it. damage. Summary of the invention

[0004] The purpose of the present invention is to overcome the deficiencies in the prior art and provide a Metered Meter system and metering method, the present invention can be used for thermal system Distributed real-time measurement, and display calculation results in each link of the thermal system, to achieve the thermal system Accurate statistics of distribution provide data support for thermal system planning, design and operation optimization, and build Provide a basis for the thermal market of trading objects.

[0005] The objective of the present invention is achieved through the following technical solutions:

[0006] A thermal system Metered Table system, including cloud servers, A table and a communication device, the communication device is used to Data transmission between the table and the cloud server; The table is located at different positions in the thermal system. Heat source side Table, network side Table, load side Table and heat storage side surface;

[0007] The heat source side Heat source side water supply Return water from table and heat source side The meters are installed at the water supply and return ports of the heating plant respectively; the network side Table and load side Tables include water supply nodes Table, return water node Tables and Exit Nodes The heat storage side is installed at each water supply node, return water node and outlet node respectively; The table is divided into heat storage side water inlet Meter and heat storage side outlet The meters are installed at the water inlet and outlet of the heat storage device respectively;

[0008] Said Each table in the system Table is used to collect and preliminarily calculate The data required by the situation is transmitted to the cloud server, and the cloud server collects the data for the thermal system The flow mechanism model is calculated and the calculation results are fed back to each Table, then by each The table shows the real-time feedback from the cloud server. Parameter result;

[0009] Said The meter system is a two-layer system, which is divided into two parts: the upper system and the lower system. The upper system includes a cloud server, which is used to calculate the thermal system. distribution, including according to the heat source side Table of data for calculating heat source Inflow heat source Inflow and outflow heat sources flow; according to the load side Table data calculation load Inflow load Inflow and outflow load Flow and Load loss; according to the network side Table of data calculation for water supply pipeline Flow and return pipes Flow, water supply pipeline Damage and return pipes loss; according to the heat storage side Calculate heat storage based on the data in the table Flow into the heat storage device Flow in and out of heat storage device Flow and heat storage side loss; finally the thermal system is calculated efficiency.

[0010] The lower system consists of the heat source side Table, network side Table, load side Table, heat storage side The table consists of The tables are connected by communication devices for mutual communication. The table is used to obtain the corresponding installation nodes Potential, and obtain the heat source water flow rate, load water flow rate, pipeline water flow rate and heat storage side water flow rate.

[0011] Furthermore, the Each table in the system Table is used to collect and preliminarily calculate The data required for the trend include:

[0012] p x =[(TT a ln T)c p -(T a -T a l T a )c p ] (18)

[0013] In the formula, p x For Node potential, T is the node temperature; Ta is the ambient temperature; c p is the specific heat capacity of water, J / (kg·K);

[0014] According to the heat source side Table of data for calculating heat source Inflow heat source Inflow and outflow heat sources The calculation formula is shown in equations (2)-(4):

[0015] Δe S =(p S,s -p S,r )m S,q (19)

[0016] e S,r =p S,r m S,q (20)

[0017] e S,s =p S,s m S,q (twenty one)

[0018] In the formula, Δe S For heat source e S,r For inflow heat source Flow, e S,s For outflow heat source Flow, p S,s Water supply node for heat source side Potential, p S,r Return water node on the heat source side Potential, m S,q is the heat source water flow rate;

[0019] According to the load side Table data calculation load Inflow load Inflow and outflow load Flow and Load The calculation formula is shown in equations (5)-(8):

[0020] Δe L =(p s -p o )m L,q (twenty two)

[0021] e L,s =p s m L,q (twenty three)

[0022] e L,o =p o mL,q (twenty four)

[0023] Δe L,d =(p o -p r )m L,q (25)

[0024] In the formula, Δe L For load e L,s Inflow load Flow, e L,o Outflow load Flow, Δe L,d For load Loss, p s For water supply node Potential, p o For the exit node Potential, p r Backwater node Potential, m L,q is the load water flow rate;

[0025] According to the network side Table of data calculation for water supply pipeline Flow and return pipes Flow, water supply pipeline Damage and return pipes The calculation formula is shown in equations (9)-(12):

[0026] e P,s =p s m P,q (26)

[0027] e P,r =p r m P,q (27)

[0028] Δe P,sd =(p s1 -p s2 )m P,q (28)

[0029] Δe P,rd =(p r1 -p r2 )m P,q (29)

[0030] In the formula, e P,s For water supply pipes Flow, e P,r For return pipe Flow, Δe P，sd For water supply pipes Loss, Δe P,rd For return pipe Loss, p s1 and p s2 They are the nodes at both ends of the water supply pipeline. potential; p r1 and p r2 They are the nodes at both ends of the return pipe. potential; m P,q is the pipe water flow rate;

[0031] According to the heat storage side Calculate heat storage based on the data in the table Flow into the heat storage device Flow in and out of heat storage device Flow and heat storage side The calculation formula is shown in equations (13)-(16):

[0032] Δe sto =(p sto,s -p sto,o )m sto,q (30)

[0033] e sto,s =p sto,s m sto,q (31)

[0034] e sto,o =p sto,o m sto,q (32)

[0035] Δe sto,d =(p sto,s -p sto,o )m sto,q (33)

[0036] In the formula, Δe sto For heat storage e sto,s To flow into the heat storage device Flow, e sto,o For outflow of heat storage device Flow, Δe sto,d For heat storage side Loss, p sto,s Water supply node for heat storage side Potential, p sto,o The heat storage side outlet node Potential, m sto,q is the water flow rate on the heat storage side;

[0037] The thermal system The calculation formula of efficiency is shown in formula (17):

[0038]

[0039] Where η Ex for Efficiency, E in For supply E out Output

[0040] Furthermore, for the presence of renewable energy in the thermal system, The meter can measure the actual heat source supplied by renewable energy to the energy network The heat source of renewable energy is calculated by formula (2): The actual supply of renewable energy to the energy network is calculated by formula (4): flow.

[0041] The present invention also provides a method based on the Meter system realizes thermal system Methods of measurement include:

[0042] (1) Determine the thermal system Basic indicators of metering parameters; including nodes Potential, heat source load flow, The specific definitions of each indicator are:

[0043] node Potential, the heat transferred by unit mass water from ambient temperature to actual temperature Ambient temperature corresponding to Zero for thermal system Potential point, the temperature of a node in a thermal system corresponds to the ambient temperature. The potential difference is defined as the corresponding Potential, the unit is J / kg;

[0044] Heat Source The amount of heat absorbed by water at the heat source

[0045] load The heat released by water at the load

[0046] The heat absorbed by water from ambient temperature to temperature T As water flows through the network, it is called the thermal system flow; Flows include: Flow into heat source Flow and outflow heat source Flow, inflow load Inflow and outflow load Flow, water supply pipeline Flow and return pipes Flow into the heat storage device Flow in and out of heat storage device flow;

[0047] The reduction in the system's ability to do work due to the irreversibility of the process is called the loss of the process. loss; Losses include: Load Damage, water supply pipe Damage and return pipe Loss and heat storage side damage;

[0048] (2) According to the unbalanced node power, network topology, and pipe network parameters of the thermal system, the thermal system flow is solved, including the water flow rate and the temperatures of the water supply node, return node, and outlet node; the details are as follows:

[0049] (201) Initialization, including water flow rate, load water supply temperature, return water temperature initialization, and overall error group initialization;

[0050] (202) Calculate the water flow rate in the pipeline and solve the hydraulic model;

[0051] (203) Calculate the supply water temperature and return water temperature, establish the outlet temperature drop equation, determine the supply and return water temperature coefficient matrix, and iteratively solve the supply and return water temperatures;

[0052] (3) According to the temperature of each water supply node, return node and outlet node in step (2), obtain the node Potential vector; ambient temperature is used as zero reference Potential point, according to the water temperature T and ambient temperature T at the node a , get the node Potential x for:

[0053] p x =[(TT a ln T)c p -(T a -T a l T a )c p ]

[0054] (4) According to step (2) and step (3), based on the water flow rate and Potential Calculation flow and harmony Distribution of loss.

[0055] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the thermal system when executing the program. Steps of the measurement method.

[0056] The present invention also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements the thermal system Steps of the measurement method.

[0057] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0058] 1. Thermal system The proposed measurement method combines the network characteristics of the thermal system with the concept of coordinated development of quantity and quality, and establishes a method to display the thermal system. Distribution Flow mechanism model, that is, according to the temperature and flow rate of each main link, the real-time Parameter values ​​can reflect the effective energy utilization in the production, transmission, distribution, conversion, and storage of thermal systems.

[0059] 2. It can uniformly represent different forms of energy, has potential commodity attributes, and uses the cloud data processing technology of the upper system to convert the real-time data of each link of source-grid-load-storage into real-time data of each link of source-grid-load-storage. The parameter calculation results are intuitively displayed to heat suppliers and heat users, providing a basis for building a more fair and reasonable heat trading market and achieving better demand response.

[0060] 3. Compared with the existing method based on thermal system energy metering, the present invention takes into account both the "quantity" and "quality" of energy in the thermal system, based on the thermal system source-grid-load-storage and The thermal system considering energy quality is proposed. The measurement method proposed The concept of a meter can measure the thermal system distributed.

[0061] 4. Based on the traditional energy monitoring device, the present invention Combined with the network characteristics of the thermal system, the distribution of effective energy in the thermal system is comprehensively considered, and the utilization of effective energy is reflected in Table interface.

[0062] 5. The present invention takes into account the presence of geothermal energy (renewable energy) in the thermal system, through the heat source side Metered renewable heat sources actually supplying heat to the heating network It can provide theoretical support for the coordinated development of quantity and quality of thermal systems containing renewable heat sources.

[0063] 6. The present invention has broad application prospects, thermal system Measurement methods and The table system comprehensively considers the "quantity" and "quality" of the quantity to model the thermal system, reflecting the relationship between the input and output effective energy of the thermal system. In actual engineering, it can be based on the thermal system The measurement results optimize the overall energy quality of the system; based on the thermal system Measurement methods and The meter system allows decision makers to clearly observe the thermal system The distribution of energy can be analyzed in order to analyze the energy quality characteristics, and then technical means such as equipment configuration and operation optimization can be adopted to improve the weak links in the system energy consumption and reduce the loss of local high-quality energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 For realizing the thermal system in the embodiment of the present invention Metered Schematic diagram of the structure of the table system.

[0065] Figure 2 It is a structural schematic diagram of a thermal system in a specific embodiment.

[0066] Figure 3 The node of the thermal system in the specific embodiment is Schematic diagram of potential distribution. DETAILED DESCRIPTION

[0067] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0068] The present invention proposes a method for realizing a thermal system Metered The table system is structured as follows Figure 1 shown. The table system consists of cloud servers, distributed on the heat source side of the system Table, network side Table, load side Table, heat storage side Table, and implementation The cloud server is a computing center responsible for data transmission between the table and the cloud server. The meter system communicates to obtain the flow conditions of the thermal system and calculate; according to The table is located at different positions in the thermal system and is divided into the heat source side Table, network side Table, load side Table and heat storage side Table, heat source side Heat source side water supply Return water from table and heat source side The meters are installed at the water supply and return ports of the heating plant; the network side Table and load side Table includes water supply nodes Table, return water node Tables and Exit Nodes The meters are installed at each water supply node, return node and outlet node; the heat storage side The table is divided into heat storage side water inlet Meter and heat storage side outlet The meters are installed at the water inlet and outlet of the heat storage device. Table used to collect thermal system The data required for the calculation include:

[0069] p x =[(TT a ln T)c p -(T a -T a l T a )c p ] (35)

[0070] In the formula, p x For Node potential, T is the node temperature; T a is the ambient temperature; c p is the specific heat capacity of water (J / (kg·K));

[0071] The collected data is transmitted to the cloud server through the communication device used for data transmission, and the calculation results fed back by the cloud server are displayed. In the figure, the one-way black solid line arrow represents the water supply pipeline, the one-way gray solid line arrow represents the return pipeline, and the two-way black dotted line arrow represents the communication line and direction.

[0072] In this embodiment The meter system is a two-layer system, which is divided into an upper system and a lower system. The upper system includes a cloud server, which can be used to calculate the thermal system. Flow distribution, including heat source side Table of data for calculating heat source Inflow heat source Inflow and outflow heat sources The calculation formula is shown in equations (2)-(4):

[0073] Δe S =(p S,s -p S,r )m S,q (36)

[0074] e S,r =p S,r m S,q (37)

[0075] e S,s =p S,s m S,q (38)

[0076] In the formula, Δe S For heat source e S,r For inflow heat source Flow, e S,s For outflow heat source Flow, p S,s Water supply node for heat source side Potential, p S,r Return water node on the heat source side Potential, m S,q is the heat source water flow rate;

[0077] According to the load side Table data calculation load Inflow load Inflow and outflow load Flow and Load The calculation formula is shown in equations (5)-(8):

[0078] Δe L =(p s -p o )m L,q (39)

[0079] e L,s =p s m L,q (40)

[0080] e L,o =p o m L,q (41)

[0081] Δe L,d =(p o -p r )m L,q (42)

[0082] In the formula, Δe L For load , eL,s Inflow load Flow, e L,o Outflow load Flow, Δe L,d For load Loss, p s For water supply node Potential, p o For the exit node Potential, p r Backwater node Potential, m L,q is the load water flow rate;

[0083] According to the network side Table of data calculation for water supply pipeline Flow and return pipes Flow, water supply pipeline Damage and return pipes The calculation formula is shown in equations (9)-(12):

[0084] e P,s =p s m P,q (43)

[0085] e P,r =p r m P,q (44)

[0086] Δe P,sd =(p s1 -p s2 )m P,q (45)

[0087] Δe P,rd =(p r1 -p r2 )m P,q (46)

[0088] In the formula, e P,s For water supply pipes Flow, e P,r For return pipe Flow, Δe P,sd For water supply pipes Loss, Δe P,rd For return pipe Loss, p s1 and p s2 They are the nodes at both ends of the water supply pipeline. potential; p r1 and p r2 They are the nodes at both ends of the return pipe. Potential. P,q is the pipe water flow rate;

[0089] According to the heat storage side Calculate heat storage based on the data in the table Flow into the heat storage device Flow in and out of heat storage device Flow and heat storage side The calculation formula is shown in equations (13)-(16):

[0090] Δe sto =(p sto,s -p sto,o )m sto,q (47)

[0091] e sto,s =p sto,s m sto,q (48)

[0092] e sto,o =p sto,o m sto,q (49)

[0093] Δe sto,d =(p sto,s -p sto,o )m sto,q (50)

[0094] In the formula, Δe sto For heat storage , e sto,s To flow into the heat storage device Flow, e sto,o For outflow of heat storage device Flow, Δe sto,d For heat storage side Loss, p sto,s Water supply node for heat storage side Potential, p sto,o The heat storage side outlet node Potential, m sto,q is the water flow rate on the heat storage side;

[0095] The lower system consists of the heat source side Table, network side Table, load side Table, heat storage side Table composition, The tables communicate with each other to obtain Table installation node Potential, and get the heat source water flow rate, load water flow rate, pipeline water flow rate and heat storage side water flow rate; thus calculate the thermal system Efficiency. Its calculation formula is shown in formula (17):

[0096]

[0097] Where η Ex for Efficiency, E in For supply E out Output

[0098] Specifically, in practical applications, the above The specific workflow of the table system is as follows:

[0099] (1) Lower-level systems The table collects the environmental issues of the corresponding nodes, node temperature, and water flow rate of the heat source, load water flow rate, pipeline water flow rate, and water flow rate of the heat storage side;

[0100] (2) Lower-level systems The tables communicate with each other. Table preliminary calculation of installation nodes Potential, packaged with information such as water flow rate and location;

[0101] (3) The communication device uploads the data information in step (2) to the cloud server;

[0102] (4) Upper-layer system cloud server computing flow, The distribution of the loss is calculated by the above specific calculation formula;

[0103] (401) The cloud server solves the thermal system flow, including the water flow rate and the temperatures of the water supply node, the return node, and the outlet node, based on the unbalanced node power, the network topology, and the pipe network parameters of the thermal system;

[0104] (402) Cloud Server Utilization Table transfer potential data, combined with the thermal system flow distribution data, using the thermal system proposed by the present invention Metering methods for calculating thermal systems flow, Potential distribution.

[0105] After the above steps, the heat source of the thermal system can be obtained load Heat storage Each node flow, Loss and efficiency.

[0106] The cloud server uses the above thermal system The distribution is calculated by The functions of data interaction, data display and communication between tables are used to realize the thermal system Real-time measurement and display. The basic measurement and display indicators of the table include node temperature, node Momentum, flow, Loss; For the heat source side The table also needs to show the heat source For the load side The table also needs to show the load For the heat storage side The table also needs to show the heat storage If there is geothermal energy (renewable energy) in the thermal system, the geothermal energy is regarded as a heat source and a heat source side is installed at the ground source heat pump. Meter to measure the heat source actually supplied to the heat network by renewable energy equipment

[0107] Specifically, this embodiment also proposes based on the above Meter system realizes thermal system Methods of measurement include:

[0108] (1) Determine the thermal system Basic indicators of metrological parameters;

[0109] Thermal system The basic indicators of measurement parameters include nodes Potential, heat source load flow, The specific definitions of each indicator are:

[0110] (101)Node Potential: The amount of heat transferred from a unit mass of water from ambient temperature to actual temperature Ambient temperature corresponding to Zero for thermal system Potential point, the temperature of a node in a thermal system corresponds to the ambient temperature. The potential difference is defined as the corresponding Potential, the unit is (J / kg);

[0111] (102) Heat source The amount of heat absorbed by water at the heat source

[0112] (103) Load The heat released by water at the load

[0113] (104) Flow: The amount of heat absorbed by water when it is heated from ambient temperature to temperature T As water flows through the network, it is called the thermal system flow; Flows include: Flow into heat source Flow and outflow heat source Flow, inflow load Inflow and outflow load Flow, water supply pipeline Flow and return pipes Flow into the heat storage device Flow in and out of heat storage device flow;

[0114] (105) Loss: The reduction in the system's ability to do work due to the irreversibility of the process is called the loss of the process. loss; Losses include: Load Damage, water supply pipe Damage and return pipe Loss and heat storage side damage;

[0115] (2) According to the unbalanced node power, network topology, and pipe network parameters of the thermal system, the thermal system flow is solved, including the water flow rate and the temperatures of the water supply node, return node, and outlet node; the details are as follows:

[0116] (201) Initialization, including water flow rate, load water supply temperature, return water temperature initialization, and overall error group initialization;

[0117] (202) Calculate the water flow rate in the pipeline and solve the hydraulic model;

[0118] (203) Calculate the supply water temperature and return water temperature, establish the outlet temperature drop equation, determine the supply and return water temperature coefficient matrix, and iteratively solve the supply and return water temperatures;

[0119] For the specific calculation process, please refer to the published patent application: Integrated energy system based on unbalanced node power Flow indirect calculation method, application number: 2022103947544.

[0120] (3) According to the temperature of each water supply node, return node and outlet node in step (2), obtain the node potential vector;

[0121] (301) Taking the ambient temperature as zero reference Potential point, according to the water temperature T and ambient temperature T at the node a , get the node Potential x For: p x=[(TT a ln T)c p -(T a -T a l T a )c p ]

[0122] (4) According to step (2) and step (3), based on the water flow rate and Potential Calculation flow and harmony The distribution of damage;

[0123] The above method can be implemented using conventional programming methods.

[0124] To this end, the embodiments of the present application also provide a method for realizing the thermal system in the above embodiments. A specific implementation of an electronic device of the measurement method, the electronic device specifically includes the following contents:

[0125] Processor, memory, communications interface and bus;

[0126] Among them, the processor, memory, and communication interface communicate with each other through the bus; the communication interface is used to realize information transmission between related devices such as server-side devices, metering devices, and user-side devices.

[0127] The processor is used to call the computer program in the memory, and the processor implements the thermal system in the above embodiment when executing the computer program. All steps of the measurement method.

[0128] The embodiments of the present application also provide a method for realizing the thermal system in the above embodiments. A computer-readable storage medium for measuring a method, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the thermal system in the above embodiment is implemented. All steps of the measurement method.

[0129] Specifically, the above is applied to the thermal system Metered The meter system and metering method are applied to the embodiment of a 7-node thermal system. Measure and verify the effectiveness of the present invention.

[0130] The structure of the thermal system used in this embodiment is as follows Figure 2 As shown, there are 2 heating plants, 1 geothermal (new energy), 1 industrial load and 1 civil load. The parameters of each thermal pipeline are shown in Table 1.

[0131] Table 1 Thermal pipeline parameters

[0132]

[0133] The nodes and load power of the thermal system are shown in Table 2:

[0134] Table 2 Thermal load power

[0135]

[0136] Thermodynamic system according to the present invention Measurement methods and Table system, first get the thermal system nodes Potential distribution, thermal system nodes The potential distribution diagram is shown in Figure 3 The unit is kW. flow, The loss distribution is shown in Table 3. load load The damage results are shown in Table 4. Loss, total supply at source Total load The results are shown in Table 5. Equal to the load consumption With all The sum of the losses proves that the system of this embodiment Balance verifies the effectiveness of the present invention.

[0137] Table 3 Flow distribution calculation results (kW)

[0138]

[0139] Table 4 Source ,load and load Loss(kW)

[0140]

[0141] Table 5 Thermal system Loss, total supply at source and the total load Calculation result (kW)

[0142]

[0143] In summary, energy-efficient devices may Low efficiency. Based on thermal system The measurement method and #imgpt403# meter system can obtain the #imgpt404# distribution of the thermal system. When studying the equipment selection and capacity configuration of the thermal system, the differences in energy "quantity" and "quality" should be comprehensively considered.

[0144] Unless otherwise specified, the models of the components in the embodiments of the present invention are not limited, and any device that can perform the above functions may be used.

[0145] Those skilled in the art will appreciate that the accompanying drawing is only a schematic diagram of a preferred embodiment, and the serial numbers of the embodiments of the present invention are only for description and do not represent the advantages or disadvantages of the embodiments.

[0146] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0147] The present invention is not limited to the embodiments described above. The above description of the specific embodiments is intended to describe and illustrate the technical solution of the present invention. The above specific embodiments are merely illustrative and not restrictive. Without departing from the scope of the present invention and the scope of protection of the claims, a person of ordinary skill in the art can also make many forms of specific changes under the guidance of the present invention, which all fall within the scope of protection of the present invention.

[0148] Finally, it should be pointed out that the above examples are only used to illustrate the calculation process of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above examples, a person skilled in the art should understand that the calculation process described in the above examples can still be modified, or some parameters can be replaced by equivalents, and these modifications or replacements do not make the essence of the corresponding calculation method deviate from the spirit and scope of the calculation method of the present invention.

Claims

1. A thermal system Metered Table system, characterized in that Including cloud servers, A table and a communication device, the communication device is used to Data transmission between the table and the cloud server; According to the The table is located at different positions in the thermal system. Heat source side Table, network side Table, load side Table and heat storage side surface; The heat source side Heat source side water supply Return water from table and heat source side The meters are installed at the water supply and return ports of the heating plant respectively; the network side Table and load side Tables include water supply nodes Table, return water node Tables and Exit Nodes The heat storage side is installed at each water supply node, return water node and outlet node respectively; The table is divided into heat storage side water inlet Meter and heat storage side outlet The meters are installed at the water inlet and outlet of the heat storage device respectively; Said Each table in the system Table is used to collect and preliminarily calculate The data required by the situation is transmitted to the cloud server, and the cloud server collects the data for the thermal system The flow mechanism model is calculated and the calculation results are fed back to each Table, then by each The table shows the real-time feedback from the cloud server. Parameter result; Said The meter system is a two-layer system, which is divided into two parts: the upper system and the lower system. The upper system includes a cloud server, which is used to calculate the thermal system. distribution, including according to the heat source side Table of data for calculating heat source Inflow heat source Inflow and outflow heat sources flow; according to the load side Table data calculation load Inflow load Inflow and outflow load Flow and Load loss; according to the network side Table of data calculation for water supply pipeline Flow and return pipes Flow, water supply pipeline Damage and return pipes loss; according to the heat storage side Calculate heat storage based on the data in the table Flow into the heat storage device Flow in and out of heat storage device Flow and heat storage side loss; finally the thermal system is calculated efficiency; The lower system consists of the heat source side Table, network side Table, load side Table, heat storage side The table consists of The tables are connected by communication devices for mutual communication. The table is used to obtain the corresponding installation nodes Potential, and obtain the heat source water flow rate, load water flow rate, pipeline water flow rate and heat storage side water flow rate.

2. A method for use in a thermal system according to claim 1 Metered Table system, characterized in that Said Each table in the system Table is used to collect and preliminarily calculate The data required for the trend include: p x =[(T-T a lnT)c p -(T a -T a lnT a )c p ] (1) In the formula, p x For Node potential, T is the node temperature; T a is the ambient temperature; c p is the specific heat capacity of water, J / (kg·K); According to the heat source side Table of data for calculating heat source Inflow heat source Inflow and outflow heat sources The calculation formula is shown in equations (2)-(4): Δe S =(p S,s -p S,r )m S,q (2) e S,r =p S,r m S,q (3) e S,s =p S,s m S,q (4) In the formula, Δe S For heat source e S,r For inflow heat source Flow, e S,s For outflow heat source Flow, p S,s Water supply node for heat source side Potential, p S,r Return water node on the heat source side Potential, m S,q is the heat source water flow rate; According to the load side Table data calculation load Inflow load Inflow and outflow load Flow and Load The calculation formula is shown in equations (5)-(8): Δe L =(p s -p o )m L,q (5) e L,s =p s m L,q (6) e L,o =p o m L,q (7) Δe L,d =(p o -p r )m L,q (8) In the formula, Δe L For load e L,s Inflow load Flow, e L,o Outflow load Flow, Δe L,d For load Loss, p s For water supply node Potential, p o For the exit node Potential, p r Backwater node Potential, m L,q is the load water flow rate; According to the network side Table of data calculation for water supply pipeline Flow and return pipes Flow, water supply pipeline Damage and return pipes The calculation formula is shown in equations (9)-(12): e P,s =p s m P,q (9) e P,r =p r m P,q (10) Δe P,sd =(p s1 -p s2 )m P,q (11) Δe P,rd =(p r1 -p r2 )m P,q (12) In the formula, e P,s For water supply pipes Flow, e P,r For return pipe Flow, Δe P,sd For water supply pipes Loss, Δe P,rd For return pipe Loss, p s1 and p s2 They are the nodes at both ends of the water supply pipeline. potential; p r1 and p r2 They are the nodes at both ends of the return pipe. potential; m P,q is the pipe water flow rate; According to the heat storage side Calculate heat storage based on the data in the table Flow into the heat storage device Flow in and out of heat storage device Flow and heat storage side The calculation formula is shown in equations (13)-(16): Δe sto =(p sto,s -p sto,o )m sto,q (13) e sto,s =p sto,s m sto,q (14) e sto,o =p sto,o m sto,q (15) Δe sto,d =(p sto,s -p sto,o )m sto,q (16) In the formula, Δe sto For heat storage e sto,s To flow into the heat storage device Flow, e sto,o For outflow of heat storage device Flow, Δe sto,d For heat storage side Loss, p sto,s Water supply node for heat storage side Potential, p sto,o The heat storage side outlet node Potential, m sto,q is the water flow rate on the heat storage side; The thermal system The calculation formula of efficiency is shown in formula (17): Where η Ex for Efficiency, E in For supply E out Output 3. A method for use in a thermal system according to claim 1 Metered Table system, characterized in that For thermal systems with renewable energy sources, The meter can measure the actual heat source supplied by renewable energy to the energy network The heat source of renewable energy is calculated by formula (2): The actual supply of renewable energy to the energy network is calculated by formula (4): flow.

4. A method according to claim 1 Meter system realizes thermal system The method of metering is characterized in that include: (1) Determine the thermal system Basic indicators of metering parameters; including nodes Potential, heat source load flow, The specific definitions of each indicator are: node Potential, the heat transferred by unit mass water from ambient temperature to actual temperature Ambient temperature corresponding to Zero for thermal system Potential point, the temperature of a node in a thermal system corresponds to the ambient temperature. The potential difference is defined as the corresponding Potential, the unit is J / kg; Heat Source The amount of heat absorbed by water at the heat source load The heat released by water at the load The heat absorbed by water from ambient temperature to temperature T As water flows through the network, it is called the thermal system flow; flow Includes: Inflow heat source Flow and outflow heat source Flow, inflow load Inflow and outflow load Flow, water supply pipeline Flow and return pipes Flow into the heat storage device Flow in and out of heat storage device flow; The reduction in the system's ability to do work due to the irreversibility of the process is called the loss of the process. loss; Losses include: Load Damage, water supply pipe Damage and return pipe Loss and heat storage side damage; (2) According to the unbalanced node power, network topology, and pipe network parameters of the thermal system, the thermal system flow is solved, including the water flow rate and the temperatures of the water supply node, return node, and outlet node; the details are as follows: (201) Initialization, including water flow rate, load water supply temperature, return water temperature initialization, and overall error group initialization; (202) Calculate the water flow rate in the pipeline and solve the hydraulic model; (203) Calculate the supply water temperature and return water temperature, establish the outlet temperature drop equation, determine the supply and return water temperature coefficient matrix, and iteratively solve the supply and return water temperatures; (3) According to the temperature of each water supply node, return water node and outlet node in step (2), obtain the node Potential vector; ambient temperature is used as zero reference Potential point, according to the water temperature T and ambient temperature T at the node a , get the node Potential x for: p x =[(T-T a lnT)c p -(T a -T a lnT a )c p ] (4) According to step (2) and step (3), based on the water flow rate and Potential Calculation flow and harmony Distribution of loss.

5. 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 program, the thermal system according to claim 4 is realized. Steps of the measurement method.

6. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the thermal system described in claim 4 is realized. Steps of the measurement method.

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