Exergy meter system and measurement method for exergy measurement in integrated energy system

Abstract

The present invention discloses a metering system and a metering method for integrated energy system (IEM) metering. The method comprises: determining basic indicators for IEM metering; generating corresponding initial data based on the IEM's unbalanced node power, network topology, pipe network parameters, and the equipment models and operating modes within energy stations, and solving the IEM power flow; and obtaining node potential vectors based on each node parameter to calculate the IEM distribution. The IEM metering system comprises a cloud server, IEM meters distributed throughout the system, and a communication device for data transmission between the IEM meters and the cloud server. The IEM meters are divided into power system meters, thermal system meters, gas system meters, and energy station meters. The present invention enables real-time metering of IEM distribution parameters across all aspects of the IEM system.

Description

Technical Field

[0001] The present invention belongs to the technical field of energy quality analysis of integrated energy systems, and relates to the fields of integrated energy systems, power systems, thermal systems, and gas systems, and in particular to a method for Metered Meter system and measurement method. Background Art

[0002] Energy and environmental challenges are becoming increasingly severe, and building an integrated energy system that balances both quantity and quality has become a crucial component of energy transformation. As a crucial component of energy conversion and supply, the integrated energy system sector is a major consumer of fossil energy, contributing to numerous environmental issues. As a reasonable measure of energy quality, energy is the portion of energy that can theoretically be converted into work or other forms of energy under environmental conditions, taking into account both the "quantity" and "quality" of energy. Research on the effective energy and energy quality analysis technology of integrated energy systems is of great significance for improving the effective energy utilization rate of integrated energy systems, achieving energy transformation, and continuously promoting the construction of integrated energy systems with coordinated development of energy quantity and quality.

[0003] Integrated energy system The measurement method is the basis of comprehensive energy system effective energy and energy quality analysis technology, which 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 calculation methods establish black box models from a macro perspective, based on the input and output of the integrated energy system. Direct calculation cannot clearly reflect the network characteristics of the integrated energy 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 displayed intuitively. 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 this invention is to overcome the deficiencies in the prior art and provide a comprehensive energy system. Metered Meter system and metering method, the present invention can be used in comprehensive energy system Distributed real-time metering and display of calculation results in each link of the integrated energy system to achieve comprehensive energy system Accurate statistics of distribution provide data support for the planning, design and operation optimization of integrated energy systems, and build Provide a basis for the integrated energy market of trading partners.

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

[0006] A comprehensive energy system Metered Table system, including cloud servers, Table, and implementation Communication device for data transmission between the table and the cloud server; Table includes power system Table, thermal system Meter, gas system Meters and Energy Stations surface;

[0007] The power system The table includes the power generation side Meter, transmission side Meter, distribution side Table and user side The meters are installed at power plant nodes, transmission network nodes, distribution network nodes, and user nodes of the power system;

[0008] The thermal system Table includes heat source side Meter, heating network side Table and heat load side Table, heat source side The table includes water supply on the heat source side Return water from the table and heat source side The meters are installed at the water supply and return ports of the heating plant, and on the heating network side. Table and heat load side Tables include water supply nodes Table, return water node Tables and Exit Nodes Meters are installed at each water supply node, return water node and outlet node;

[0009] The gas system Table includes gas source side Meter, gas network side Meter, gas load side Table, gas source side The table includes the high pressure on the gas source side Gauge, medium pressure on gas source side Low pressure on the meter and gas source side The meters are installed at the high-pressure gas source, medium-pressure gas source and low-pressure gas source supply gate stations, respectively. Network side high voltage Meter, network side medium voltage Meter and network side low voltage The meters are installed at the nodes of high-pressure pipe network, medium-pressure pipe network and low-pressure pipe network respectively. The table is divided into load side medium pressure Meter and load side low pressure The meters are installed at the nodes corresponding to the gas loads;

[0010] described 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 through the integrated energy system. The flow mechanism model is used for calculation and the calculation results are fed back to the corresponding table, and then by The table shows the real-time feedback from the cloud server. Parameter result;

[0011] described 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 cloud servers, which are used to calculate the integrated energy system network. Distribution, including: According to the power system Table calculation of power system Distribution, according to the power generation side Table of data calculation power According to the transmission side Meter, distribution side Calculate the power branch circuit data Flow and power branches Loss, according to the user side Calculate the power load using the data in the table

[0012] According to the thermal system Table calculation of thermal system Distribution, according to the heat source side Calculate heat source from the data in the table Inflow heat source Inflow and outflow heat sources flow; according to the thermal network side Table of data calculation for water supply pipeline Flow and return pipes Flow, water supply pipes Loss and return pipes loss; according to the heat load side Calculate heat load based on the data in the table Inflow heat load Inflow and outflow heat load Flow and heat loads The upper system finally calculates the comprehensive energy system efficiency.

[0013] According to the gas system Table calculation of gas system Distribution, according to the gas source side Calculate the gas source based on the data in the table According to the gas load side Calculate gas load based on the data in the table According to the gas network Data calculation pipeline for the table Streams and Pipes damage;

[0014] The lower level system consists of the power system Table, thermal system Meter, gas system Meters and Energy Stations The table consists of The tables communicate with each other through the communication device, and obtain The table corresponds to the installation node The potential can be measured, and the line voltage at both ends of the branch in the power system, the line current flowing through the branch, power supply and load, the heat source water flow rate, load water flow rate, pipeline water flow rate and heat storage side water flow rate in the thermal system, and the gas source gas flow rate, load gas flow rate and pipeline gas flow rate in the gas system can be measured.

[0015] Furthermore, the Table is used to collect and preliminarily calculate The data required for the trend include:

[0016]

[0017] Where p e 、p h and p g Nodes for the power system, thermal system, and gas system momentum; is the line voltage phasor at the head end of the power branch, kV∠rad; T is the node temperature; T a is the ambient temperature; c p is the specific heat capacity of water, J / (kg·K); T b is the theoretical combustion temperature of gas; GCV is the calorific value of gas.

[0018] Furthermore, the power system Table calculation of power system Distribution, according to the power generation side Table of data calculation power , according to the transmission side Meter, distribution side Calculate the power branch circuit data Flow and power branches Loss, according to the user side Calculate the power load using the data in the table The calculation formula is shown in formula (2):

[0019]

[0020] Where, e e and Δe e Power branch circuit flow and harmony loss; e e,S and e e,L Power supply and power load real[·] is the real part of a complex number; and are the line voltage phasors at both ends of the branch respectively; are the conjugates of the line current phasors flowing through the branch, power supply and load respectively, A∠rad.

[0021] Furthermore, the thermal system Table calculation of thermal system Distribution, according to the heat source side Calculate heat source from the data in the table Inflow heat source Inflow and outflow heat sources flow; according to the thermal network side Table of data calculation for water supply pipeline Flow and return pipes Flow, water supply pipes Loss and return pipes loss; according to the heat load side Calculate heat load based on the data in the table , inflow heat load Inflow and outflow heat load Flow and heat loads Loss; the calculation formula is shown in formula (3)-(5):

[0022]

[0023]

[0024]

[0025] Where, e h,s 、e h,r 、e h,sL 、e h,oL and e h,rS Water supply pipes Flow and return pipes Flow, inflow load Inflow and outflow load Flow and inflow heat source flow;p s 、p r and p o Water supply nodes Potential, backwater node Potential and exit nodes potential; m h 、m h,qL and m h,qS are pipeline water flow rate, load water flow rate and heat source water flow rate respectively; Δe h,sl , Δe h,rl and Δe h,L1 Water supply pipes Damage and return pipes Loss and load loss; p s1 and p s2 The nodes at both ends of the water supply pipeline are potential; p r1 and p r2 The nodes at both ends of the return pipe are potential; Δe h,S and Δe h,L Heat source and load

[0026] Furthermore, the gas system Table calculation of gas system Distribution, according to the gas source side Calculate the gas source based on the data in the table According to the gas load side Calculate gas load based on the data in the table According to the gas network Data calculation pipeline for the table Streams and Pipes The calculation formula is shown in formula (6):

[0027]

[0028] Where, e g , Δe g 、eg,S and e g,L Pipeline flow, Loss, gas source Gas load p g1 and p g2 For both ends of the gas pipeline potential; m g 、m g,S and m g,L They are pipeline airflow rate, air source airflow rate and air load airflow rate respectively.

[0029] Furthermore, the integrated energy system The calculation formula of efficiency is shown in formula (7):

[0030]

[0031] Where η Ex for Efficiency, E in For supply E out Output

[0032] Furthermore, for the energy station in the integrated energy system, the energy station Meter includes electricity Table, heat Surface, cold energy Meter and gas The table is distributed and installed at the power nodes, thermal nodes, cold energy nodes, and gas nodes of the energy station; according to the energy station The data of the table is used to calculate the energy station Distribution, its calculation formula is shown in formula (8):

[0033]

[0034] Where A is the input Incidence matrix, dimension n ES,in ×n ES,e , where n ES,in The number of energy forms in the energy station input port, n ES,e For the interior of the energy station Number of branches; e in Input for energy station Column vector, dimension n ES,in ; B is output Incidence matrix, dimension n ES,out ×n ES,e , where n ES,out The number of energy forms at the output port of the energy station; eout Output for energy station Column vector, dimension n ES,out ; C is Transformation matrix, dimension n ES,c ×n ES,e , where n ES,c is the total number of energy conversion paths in the energy station; e is the number of energy conversion paths within the energy station Column vector, dimension n ES,e .

[0035] Furthermore, if there is renewable energy in the integrated energy system, The meter can measure the actual supply of renewable energy to the integrated energy network. The calculation formula is shown in formula (9):

[0036]

[0037] Where, e re,in and e re,out The input of renewable energy equipment and output e n,in Payment for renewable energy equipment consumed from nature Treated as 0; e S,in Non-renewable energy consumed by renewable energy equipment e S,out The energy actually supplied to the integrated energy system by renewable energy equipment

[0038] The present invention also provides a Meter system realizes integrated energy system Methods of measurement include:

[0039] (1) Determine the integrated energy system Measuring parameters and indicators; The parameters of the measurement include nodes Potential, Source load flow and harmony damage;

[0040] The node Potential includes power system nodes Potential and thermal system nodes Potential and gas system nodes Energy and energy station nodes momentum;

[0041] The source Power supply included heat source Gas source and renewable energy

[0042] The load Including electrical load heat load Gas load

[0043] described Flow includes power system Flow and thermal systems Flow and gas systems Flow and Energy Station flow;

[0044] described Losses include power system Loss, thermal system Loss, gas system Sunhe Energy Station damage;

[0045] (2) According to the load side The voltage, current, air flow rate, theoretical combustion temperature of gas, ambient temperature, supply water, return water and outlet node temperature and water flow rate of the thermal system at the load node are measured to obtain the unbalanced node power;

[0046] (3) Determine the power flow of the integrated energy system based on the unbalanced node power, network topology, pipe network parameters, and equipment models and operation modes within the energy station;

[0047] (4) Obtaining power system Potential and thermal systems Energy and gas systems Energy and energy station nodes momentum;

[0048] (5) According to steps (2)-(4), calculate the source end of the power system, thermal system, gas system and energy station load Pipe (line) flow and harmony damage;

[0049] (6) Constituting an integrated energy system Momentum, flow and harmony Distribution of loss.

[0050] The present invention also provides an electronic device, comprising a memory, a processor, and a computer program stored in the memory and operable on the processor, wherein the processor implements an integrated energy system when executing the program. Steps of the measurement method.

[0051] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0052] 1. Compared with the existing energy measurement method based on integrated energy system, this invention takes into account both the "quantity" and "quality" of energy in the integrated energy system, and is based on the source-grid-load-storage and The integrated energy system considering energy quality is proposed. The measurement method proposed The concept of meter can measure the comprehensive energy system Distribution, providing measurement data support for comprehensive energy status estimation.

[0053] 2. This invention establishes a comprehensive energy system that takes into account distributed hydrogen injection and renewable energy access. distributed The flow mechanism model can reflect the effective energy utilization in the production, transmission, distribution, conversion, storage and other links of the integrated energy system.

[0054] 3. It can uniformly represent different forms of energy, has potential commodity attributes, and uses the cloud data processing technology of the upper system to integrate the real-time data of each link of source-grid-load-storage. The parameter calculation results are intuitively displayed to integrated energy suppliers and users, providing a basis for building a fairer and more reasonable energy trading market and achieving better demand response.

[0055] 4. Based on the traditional energy monitoring device, the present invention Combined with the network characteristics of the integrated energy system, the distribution of effective energy in the integrated energy system is comprehensively considered, and the utilization of effective energy is reflected in the In the table interface.

[0056] 5. This invention takes into account the existence of distributed gas sources and renewable energy access in the integrated energy system. Metering of the actual supply of distributed gas sources and renewable energy to the energy network It can provide theoretical support for the coordinated development of quantity and quality of integrated energy systems containing distributed energy and renewable energy.

[0057] 6. The present invention has broad application prospects, integrated energy system Measurement methods and The table system comprehensively considers the "quantity" and "quality" of the quantity to model the integrated energy system, reflecting the relationship between the input and output effective energy of the integrated energy system. In actual engineering, it can be based on the integrated energy system. The measurement results optimize the overall energy quality of the system; based on the integrated energy system Measurement methods and A reporting system that allows decision makers to clearly observe the overall energy system The distribution of energy can be analyzed 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

[0058] Figure 1 For the integrated energy system in the embodiment of the present invention Metered Table system diagram.

[0059] Figure 2 The interior of the energy station in the integrated energy system in the embodiment of the present invention Table system diagram.

[0060] Figure 3 Schematic diagram of the structure of the integrated energy system in an embodiment of the present invention.

[0061] Figure 4 Nodes of the integrated energy system in the embodiment of the present invention Schematic diagram of potential distribution. DETAILED DESCRIPTION

[0062] The present invention will be further described in detail below with reference to 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 intended to limit the present invention.

[0063] The present invention proposes a method for a comprehensive energy system Metered Table system, its structure is as follows Figure 1 shown. The meter system consists of cloud servers, distributed throughout the integrated energy system Table, and implementation It is composed of communication devices for data transmission between meters and cloud servers; among them, Power System Table, thermal system Meter, gas system Meters and Energy Stations surface;

[0064] Power System The table includes the power generation side Meter, transmission side Meter, distribution side Table and user side The meters are installed at power plant nodes, transmission network nodes, distribution network nodes, and user nodes of the power system;

[0065] Thermal system Table includes heat source side Meter, heating network side Table and heat load side Table, heat source side Heat source side water supply Return water from the table and heat source side The meters are installed at the water supply and return ports of the heating plant, and on the heating network side. Table and heat load side Table includes water supply nodes Table, return water node Tables and Exit Nodes Meters are installed at each water supply node, return water node and outlet node;

[0066] Gas system Table includes gas source side Meter, gas network side Meter, gas load side Table, gas source side Gas source side high pressure Gauge, medium pressure on gas source side Low pressure on the meter and gas source side The meters are installed at the high-pressure gas source, medium-pressure gas source and low-pressure gas source supply gate stations, respectively. Network side high voltage Meter, network side medium voltage Meter and network side low voltage The meters are installed at the nodes of high-pressure pipe network, medium-pressure pipe network and low-pressure pipe network respectively. The table is divided into load side medium pressure Meter and load side low pressure The meters are installed at the nodes where the corresponding gas loads are located.

[0067] above Meter for collecting comprehensive energy system The data required for measurement include:

[0068]

[0069] Where p e 、p h and p g Nodes for the power system, thermal system, and gas system momentum; is the line voltage phasor at the head end of the power branch (kV∠rad); T is the node temperature; T a is the ambient temperature; c p is the specific heat capacity of water (J / (kg·K)); T bis the theoretical combustion temperature of gas; GCV is the calorific value of gas.

[0070] The collected data is then transmitted to the cloud server through a communication device for data transmission, and the calculation results fed back by the cloud server are displayed. In the figure, the black solid line with a one-way arrow represents the system energy line (pipeline) and direction, the gray solid line with a one-way arrow represents the return pipe of the thermal system, and the black dotted line with a two-way arrow represents the communication line and direction.

[0071] In this embodiment, The table system is a two-layer structure system, divided into two parts: the upper system and the lower system;

[0072] 1. The upper layer system includes cloud servers, which can be used to calculate the integrated energy system network. Distribution, including:

[0073] (101) According to the power system Table calculation of power system Distribution, according to the power generation side Table of data calculation power According to the transmission side Meter, distribution side Calculate the power branch circuit data Flow and power branches Loss, according to the user side Calculate the power load using the data in the table The calculation formula is shown in formula (2):

[0074]

[0075] Where, e e and Δe e They are respectively the power branches (lines / components) flow and harmony loss; e e,S and e e,L Power supply and power load real[·] is the real part of a complex number; and are the line voltage phasors at both ends of the branch respectively; are the conjugates of the line current phasors flowing through the branch, power supply and load respectively (A∠rad).

[0076] (102) According to the thermal system Table calculation of thermal system Distribution, according to the heat source side Calculate heat source from the data in the table Inflow heat source Inflow and outflow heat sources flow; according to the heat load side Calculate heat load based on the data in the table Inflow heat load Inflow and outflow heat load Flow and heat loads Loss; According to the thermal network side Table of data calculation for water supply pipeline Flow and return pipes Flow, water supply pipes Loss and return pipes The calculation formula is shown in formula (3)-(5):

[0077]

[0078]

[0079]

[0080] Where, e h,s 、e h,r 、e h,sL 、e h,oL and e h,rS Water supply pipes Flow and return pipes Flow, inflow load Inflow and outflow load Flow and inflow heat source flow;p s 、p r and p o Water supply nodes Potential, backwater node Potential and exit nodes potential; m h 、m h,qL and m h,qS are pipeline water flow rate, load water flow rate and heat source water flow rate respectively; Δe h,sl , Δe h,rl and Δe h,L1 Water supply and return pipes Loss and load loss; p s1 and p s2 The nodes at both ends of the water supply pipeline are potential; p r1 and p r2 The nodes at both ends of the return pipe are potential; Δe h,S and Δe h,L Heat source and load

[0081] (103) According to the gas system Table calculation of gas system Distribution, according to the gas source side Calculate the gas source based on the data in the table According to the gas load side Calculate gas load based on the data in the table According to the gas network Data calculation pipeline for the table Streams and Pipes The calculation formula is shown in formula (6):

[0082]

[0083] Where, e g , Δe g 、e g,S and e g,L Pipeline flow, Loss, gas source Gas load p g1 and p g2 For both ends of the gas pipeline potential; m g 、m g,S and m g,L They are pipeline airflow rate, air source airflow rate and air load airflow rate respectively.

[0084] 2. The lower system consists of the power system Table, thermal system Meter, gas system Meters and Energy Stations Table composition.

[0085] The tables communicate with each other to obtain Table of installed nodes The potential is measured, and the line voltage at both ends of the branch in the power system, the line current flowing through the branch, power supply and load, the heat source water flow rate, load water flow rate, pipeline water flow rate and heat storage side water flow rate in the thermal system, and the gas source gas flow rate, load gas flow rate and pipeline gas flow rate in the gas system are calculated. Efficiency, its calculation formula is shown in formula (7):

[0086]

[0087] Where η Ex for Efficiency, E in For supply E out Output

[0088] For energy stations in integrated energy systems, Meter includes electricity Table, heat Surface, cold energy Meter and gas The meters are installed at the power nodes, thermal nodes, cold energy nodes and gas nodes of the energy station. Figure 2 For the integrated energy system energy station Table system diagram. According to the energy station The data of the table is used to calculate the energy station Distribution, its calculation formula is shown in formula (8):

[0089]

[0090] Where A is the input Incidence matrix, dimension n ES,in ×n ES,e , where n ES,in The number of energy forms in the energy station input port, n ES,e For the interior of the energy station Number of branches; e in Input for energy station Column vector, dimension n ES,in ; B is output Incidence matrix, dimension n ES,out ×n ES,e , where n ES,out The number of energy forms at the output port of the energy station; e out Output for energy station Column vector, dimension n ES,out ; C is Transformation matrix, dimension n ES,c ×n ES,e , where n ES,c is the total number of energy conversion paths in the energy station; e is the number of energy conversion paths within the energy station Column vector, dimension n ES,e .

[0091] Specifically, in practical applications The specific workflow of the table system is as follows:

[0092] (1) Lower-level systems The table collects the physical data of the corresponding node, including the power system The meter collects line voltage, line current flowing through branches, power supplies and loads, thermal system The table collects node ambient temperature, node temperature, heat source water flow rate, load water flow rate, pipeline water flow rate and heat storage side water flow rate; the gas system collects the ambient temperature of the corresponding node and gas source air flow rate, gas load air flow rate and pipeline air flow rate;

[0093] (2) Lower-level systems The tables communicate with each other. Table Preliminary Calculation of Installation Nodes Potential, packaged with the physical data information in step (1);

[0094] (3) The communication device uploads the physical data information in step (2) to the cloud server;

[0095] (4) Upper-layer system cloud server computing flow, The distribution of loss is calculated using the above specific calculation formula;

[0096] After the above steps, the source of the integrated energy system can be obtained load flow, Loss and efficiency.

[0097] The cloud server uses the above integrated energy system network The calculation method of the distribution is The functions of data interaction, data display and communication between tables are used to realize the comprehensive energy system Real-time measurement and display. The basic measurement and display indicators of the table include nodes Potential, Source load flow, Loss; for power system The meter also needs to display voltage and current; for thermal systems The table should also show the node ambient temperature, node water flow temperature, node pressure, and node water flow rate; for gas systems The table should also show the node ambient temperature, node pressure, node airflow rate, and gas concentration. For the integrated energy system with renewable energy, it can be regarded as the source end, and the corresponding power generation side should be installed at the renewable energy supply end node. Surface or heat source side Meter to measure the actual energy supplied by renewable energy equipment to the integrated energy system network The calculation formula is shown in formula (9):

[0098]

[0099] Where, e re,in and ere,out The input of renewable energy equipment and output e n,in Payment for devices consumed from nature Can be regarded as 0; e S,in Non-renewable energy consumed by the equipment e S,out The energy actually supplied to the energy network by the device

[0100] Specifically, this embodiment also proposes based on the above Meter system realizes integrated energy system Methods of measurement include:

[0101] (1) Determine the integrated energy system Measuring parameters and indicators; The parameters of the measurement include nodes Potential, Source load flow and harmony damage;

[0102] node Potential includes power system nodes Potential and thermal system nodes Potential and gas system nodes Energy and energy station nodes momentum;

[0103] Source Power supply included heat source Gas source and renewable energy

[0104] load Including electrical load heat load Gas load

[0105] Flow includes power system Flow and thermal systems Flow and gas systems Flow and Energy Station flow;

[0106] Losses include power system Loss, thermal system Loss, gas system Sunhe Energy Station damage;

[0107] (2) According to the load side The voltage, current, air flow rate, theoretical combustion temperature of gas, ambient temperature, supply water, return water and outlet node temperature and water flow rate of the thermal system at the load node are measured to obtain the unbalanced node power;

[0108] (3) Determine the power flow of the integrated energy system based on the unbalanced node power, network topology, pipe network parameters, and equipment models and operation modes within the energy station;

[0109] (4) Obtaining power system Potential and thermal systems Energy and gas systems Energy and energy station nodes momentum;

[0110] (5) According to steps (2)-(4), calculate the source end of the power system, thermal system, gas system and energy station load Pipe (line) flow and harmony damage;

[0111] (6) Constituting an integrated energy system Momentum, flow and harmony Distribution of loss.

[0112] The embodiment of the present application also provides a method for realizing the integrated energy system in the above embodiment. A specific implementation of an electronic device for the measurement method, the electronic device specifically includes the following contents:

[0113] Processor, memory, communications interface, and bus;

[0114] 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.

[0115] The processor is used to call the computer program in the memory, and when the processor executes the computer program, the integrated energy system in the above embodiment is realized. All steps of the measurement method.

[0116] The embodiment of the present application also provides a method for realizing the integrated energy system in the above embodiment. A computer-readable storage medium for a metering method, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the integrated energy system in the above embodiment is realized. All steps of the measurement method.

[0117] A comprehensive energy system proposed by the present invention Measurement methods and The table system is applied to the embodiment of the integrated energy system with 6 power nodes, 7 heat nodes and 6 gas nodes, and the integrated energy system is carried out. Measure and verify the effectiveness of the present invention.

[0118] The integrated energy system structure used in the embodiment of the present invention is as follows: Figure 3 As shown, there are 2 energy stations and 1 distributed gas source. The line (pipeline) parameters of each integrated energy system are shown in Tables 1 to 3.

[0119] Table 1 Power line parameters

[0120]

[0121] Table 2 Thermal pipeline parameters

[0122]

[0123] Table 3 Gas pipeline parameters

[0124]

[0125] The nodes and load power of the integrated energy system are shown in Table 4-Table 6:

[0126] Table 4 Electric load power

[0127]

[0128] Table 5 Thermal load power

[0129]

[0130] Table 6 Gas load power

[0131]

[0132] According to the integrated energy system in the above embodiment of the present application Measurement methods and Table system, first get the comprehensive energy system node Potential distribution, integrated energy system nodes The potential distribution diagram is as follows Figure 4 As shown, the unit is kW. flow, The loss distribution is shown in Table 7. load load The damage results are shown in Table 8. Loss, total supply at source Total load The results are shown in Table 9. Equal to load consumption With all The sum of the losses proves that the comprehensive energy system of this embodiment has achieved Balance verifies the effectiveness of the technical solution of the present invention.

[0133] Table 7 Flow distribution calculation results (kW)

[0134]

[0135] Table 8 Source load and load Loss (kW)

[0136]

[0137] Table 9 Integrated energy system Loss, total supply at source and total load Calculation result (kW)

[0138]

[0139] In summary, the present invention is directed to the integrated energy system The proposed measurement method combines the network characteristics of the integrated energy system with the concept of coordinated development of quantity and quality, and establishes a method to show the integrated energy system. distributed Flow mechanism model, that is, according to the temperature and flow rate of each main link, real-time Parameter values ​​can be used in the production, transmission, distribution, conversion, storage and other aspects of the integrated energy system The measurement method reflects the effective energy utilization. At the same time, #imgpt544# can uniformly represent different forms of energy, has potential commodity attributes, and provides a basis for building a more fair and reasonable comprehensive energy trading market.

[0140] In addition, with the help of cloud data processing technology, the real-time #imgpt545# distribution parameter calculation results of each link of source-grid-load-storage are intuitively displayed to energy suppliers and energy users, achieving better demand response.

[0141] Finally, it should be noted that the above examples are intended only to illustrate the calculation process of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to the above examples, those skilled in the art will appreciate that the calculation process described in the above examples may be modified or some parameters may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the calculation method of the present invention.

[0142] 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 solutions 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, those skilled in the art may make various specific modifications based on the teachings of the present invention, all of which fall within the scope of protection of the present invention.

Claims

1. A method for integrated energy systems Metered Table system, characterized in that Including cloud servers, Table, and implementation Communication device for data transmission between the table and the cloud server; Table includes power system Table, thermal system Meter, gas system Meters and Energy Stations surface; The power system The table includes the power generation side Meter, transmission side Meter, distribution side Table and user side The meters are installed at power plant nodes, transmission network nodes, distribution network nodes, and user nodes of the power system; The thermal system Table includes heat source side Meter, heating network side Table and heat load side Table, heat source side The table includes water supply on the heat source side Return water from the table and heat source side The meters are installed at the water supply and return ports of the heating plant, and on the heating network side. Table and heat load side Tables include water supply nodes Table, return water node Tables and Exit Nodes Meters are installed at each water supply node, return water node and outlet node; The gas system Table includes gas source side Meter, gas network side Meter, gas load side Table, gas source side The table includes the high pressure on the gas source side Gauge, medium pressure on gas source side Low pressure on the meter and gas source side The meters are installed at the high-pressure gas source, medium-pressure gas source and low-pressure gas source supply gate stations, respectively. Network side high voltage Meter, network side medium voltage Meter and network side low voltage The meters are installed at the nodes of high-pressure pipe network, medium-pressure pipe network and low-pressure pipe network respectively. The table is divided into load side medium pressure Meter and load side low pressure The meters are installed at the nodes corresponding to the gas loads; described 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 through the integrated energy system. The flow mechanism model is used for calculation and the calculation results are fed back to the corresponding table, and then by The table shows the real-time feedback from the cloud server. Parameter result; described 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 cloud servers, which are used to calculate the integrated energy system network. Distribution, including: According to the power system Table calculation of power system Distribution, according to the power generation side Table of data calculation power According to the transmission side Meter, distribution side Calculate the power branch circuit data Flow and power branches Loss, according to the user side Calculate the power load using the data in the table According to the thermal system Table calculation of thermal system Distribution, according to the heat source side Calculate heat source from the data in the table Inflow heat source Inflow and outflow heat sources flow; according to the thermal network side Table of data calculation for water supply pipeline Flow and return pipes Flow, water supply pipes Loss and return pipes loss; according to the heat load side Calculate heat load based on the data in the table Inflow heat load Inflow and outflow heat load Flow and heat loads The upper system finally calculates the comprehensive energy system efficiency; According to the gas system Table calculation of gas system Distribution, according to the gas source side Calculate the gas source based on the data in the table According to the gas load side Calculate gas load based on the data in the table According to the gas network Data calculation pipeline for the table Streams and Pipes damage; The lower level system consists of the power system Table, thermal system Meter, gas system Meters and Energy Stations The table consists of The tables communicate with each other through the communication device, and obtain The table corresponds to the installation node The potential can be measured, and the line voltage at both ends of the branch in the power system, the line current flowing through the branch, power supply and load, the heat source water flow rate, load water flow rate, pipeline water flow rate and heat storage side water flow rate in the thermal system, and the gas source gas flow rate, load gas flow rate and pipeline gas flow rate in the gas system can be measured.

2. A method for a comprehensive energy system according to claim 1 Metered Table system, characterized in that described Table is used to collect and preliminarily calculate The data required for the trend include: Where p e 、p h and p g Nodes for the power system, thermal system, and gas system momentum; is the line voltage phasor at the head end of the power branch, kV∠rad; T is the node temperature; T a is the ambient temperature; c p is the specific heat capacity of water, J / (kg·K); T b is the theoretical combustion temperature of gas; GCV is the calorific value of gas.

3. A method for a comprehensive energy system according to claim 1 Metered Table system, characterized in that According to the power system Table calculation of power system Distribution, according to the power generation side Table of data calculation power According to the transmission side Meter, distribution side Calculate the power branch circuit data Flow and power branches Loss, according to the user side Calculate the power load using the data in the table The calculation formula is shown in formula (2): Where, e e and Δe e Power branch circuit flow and harmony loss; e e,S and e e,L Power supply and power load real[·] is the real part of a complex number; and are the line voltage phasors at both ends of the branch respectively; are the conjugates of the line current phasors flowing through the branch, power supply and load respectively, A∠rad.

4. A method for a comprehensive energy system according to claim 1 Metered Table system, characterized in that According to the thermal system Table calculation of thermal system Distribution, according to the heat source side Calculate heat source from the data in the table Inflow heat source Inflow and outflow heat sources flow; according to the thermal network side Table of data calculation for water supply pipeline Flow and return pipes Flow, water supply pipes Loss and return pipes loss; according to the heat load side Calculate heat load based on the data in the table Inflow heat load Inflow and outflow heat load Flow and heat loads Loss; the calculation formula is shown in formula (3)-(5): Where, e h,s 、e h,r 、e h,sL 、e h,oL and e h,rS Water supply pipes Flow and return pipes Flow, inflow load Inflow and outflow load Flow and inflow heat source flow;p s 、p r and p o Water supply nodes Potential, backwater node Potential and exit nodes potential; m h 、m h,qL and m h,qS are pipeline water flow rate, load water flow rate and heat source water flow rate respectively; Δe h,sl , Δe h,rl and Δe h,L1 Water supply pipes Damage and return pipes Loss and load loss; p s1 and p s2 The nodes at both ends of the water supply pipeline are potential; p r1 and p r2 The nodes at both ends of the return pipe are potential; Δe h,S and Δe h,L Heat source and load 5. A method for a comprehensive energy system according to claim 1 Metered Table system, characterized in that According to the gas system Table calculation of gas system Distribution, according to the gas source side Calculate the gas source based on the data in the table According to the gas load side Calculate gas load based on the data in the table According to the gas network Data calculation pipeline for the table Streams and Pipes The calculation formula is shown in formula (6): Where, e g , Δe g 、e g,S and e g,L Pipeline flow, Loss, gas source Gas load p g1 and p g2 For both ends of the gas pipeline potential; m g 、m g,S and m g,L They are pipeline airflow rate, air source airflow rate and air load airflow rate respectively.

6. A method for a comprehensive energy system according to claim 1 Metered Table system, characterized in that The integrated energy system The calculation formula of efficiency is shown in formula (7): Where η Ex for Efficiency, E in For supply E out Output 7. A method for a comprehensive energy system according to claim 1 Metered Table system, characterized in that For an energy station in a comprehensive energy system, the energy station Meter includes electricity Table, heat Surface, cold energy Meter and gas The table is distributed and installed at the power nodes, thermal nodes, cold energy nodes, and gas nodes of the energy station; according to the energy station The data of the table is used to calculate the energy station Distribution, its calculation formula is shown in formula (8): Where A is the input Incidence matrix, dimension n ES,in ×n ES,e , where n ES,in The number of energy forms in the energy station input port, n ES,e For the interior of the energy station Number of branches; e in Input for energy station Column vector, dimension n ES,in ; B is output Incidence matrix, dimension n ES,out ×n ES,e , where n ES,out The number of energy forms at the output port of the energy station; e out Output for energy station Column vector, dimension n ES,out ; C is Transformation matrix, dimension n ES,c ×n ES,e , where n ES,c is the total number of energy conversion paths in the energy station; e is the number of energy conversion paths within the energy station Column vector, dimension n ES,e .

8. A method for a comprehensive energy system according to claim 1 Metered Table system, characterized in that If there are renewable energy sources in the integrated energy system, The meter can measure the actual supply of renewable energy to the integrated energy network. The calculation formula is shown in formula (9): Where, e re,in and e re,out The input of renewable energy equipment and output e n,in Payment for renewable energy equipment consumed from nature Treated as 0; e S,in Non-renewable energy consumed by renewable energy equipment e S,out The energy actually supplied to the integrated energy system by renewable energy equipment 9. A method according to claim 1 Meter system realizes integrated energy system The method of metering is characterized in that include: (1) Determine the integrated energy system Measuring parameters and indicators; The parameters of the measurement include nodes Potential, Source load flow and harmony damage; The node Potential includes power system nodes Potential and thermal system nodes Potential and gas system nodes Energy and energy station nodes momentum; The source Power supply included heat source Gas source and renewable energy The load Including electrical load heat load Gas load described Flow includes power system Flow and thermal systems Flow and gas systems Flow and Energy Station flow; described Losses include power system Loss, thermal system Loss, gas system Sunhe Energy Station damage; (2) According to the load side The voltage, current, air flow rate, theoretical combustion temperature of gas, ambient temperature, supply water, return water and outlet node temperature and water flow rate of the thermal system at the load node are measured to obtain the unbalanced node power; (3) Determine the power flow of the integrated energy system based on the unbalanced node power, network topology, pipe network parameters, and equipment models and operation modes within the energy station; (4) Obtaining power system Potential and thermal systems Energy and gas systems Energy and energy station nodes momentum; (5) According to steps (2)-(4), calculate the source end of the power system, thermal system, gas system and energy station load Pipe (line) flow and harmony damage; (6) Constituting an integrated energy system Momentum, flow and harmony Distribution of loss.

10. An electronic device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the program, the integrated energy system described in claim 9 is realized. Steps of the measurement method.

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