Zero-carbon building energy comprehensive evaluation method and device

Abstract

The invention provides a zero-carbon building energy comprehensive evaluation method and device, and the method comprises the steps: carrying out the calibration of an established initial building simulation model based on the actual operation data of a zero-carbon building in a preset time period, and carrying out the energy simulation of the zero-carbon building in the preset time period through the calibrated building simulation model. Obtaining energy analog simulation data of the zero-carbon building at a plurality of target moments in a preset time period; and then evaluating the energy supply and demand matching condition of the zero-carbon building in a preset time period and the interaction condition of the zero-carbon building and the power grid in the preset time period based on the obtained energy analog simulation data. The problem that an existing zero-carbon building energy assessment mode is poor in accuracy and real-time performance can be solved.

Description

Technical Field

[0001] The present invention relates to the technical field of zero-carbon buildings, and in particular to a zero-carbon building energy comprehensive evaluation method and device. Background Art

[0002] Zero-carbon buildings are characterized by a high proportion of distributed renewable energy. Buildings have transformed from energy consumers to energy production, energy consumption and storage complexes. Electrification is an important development trend of building energy systems. Buildings that are fully electrified and whose power input is green electricity (wind power, photovoltaic power, hydropower, biomass power generation, etc.) can reduce direct and indirect carbon emissions during the operation phase. Buildings have a closer relationship with distributed renewable energy and power grids.

[0003] At present, there are few studies on the energy supply and demand of zero-carbon buildings, and there is a lack of supply and demand research based on project operation data. The energy assessment of zero-carbon buildings focuses on the supply and demand balance between annual production capacity and energy consumption, ignoring the energy supply and demand matching on a small time scale and the interaction between buildings and power grids. This will lead to poor accuracy and real-time performance of the energy assessment results of zero-carbon buildings, which is not conducive to real-time regulation of the energy of zero-carbon buildings based on the energy assessment results of zero-carbon buildings. Summary of the invention

[0004] In view of this, the purpose of the present invention is to provide a zero-carbon building energy comprehensive evaluation method and device to alleviate the problem of poor accuracy and real-time performance of existing zero-carbon building energy evaluation methods.

[0005] In the first aspect, an embodiment of the present invention provides a comprehensive energy evaluation method for a zero-carbon building, comprising: establishing an initial building simulation model of the zero-carbon building; obtaining actual operation data of the zero-carbon building within a preset time period, and calibrating the initial building simulation model based on the actual operation data obtained; performing energy simulation of the zero-carbon building within a preset time period through the calibrated building simulation model to obtain energy simulation data of the zero-carbon building at multiple target moments within the preset time period; based on the obtained energy simulation data, evaluating the energy supply and demand matching of the zero-carbon building within the preset time period and the interaction between the zero-carbon building and the power grid within the preset time period; wherein the energy supply and demand matching includes the matching and consumption between electricity consumption and power generation of the zero-carbon building within the preset time period.

[0006] In the second aspect, an embodiment of the present invention also provides a zero-carbon building energy comprehensive evaluation device, including an establishment module for establishing an initial building simulation model of the zero-carbon building; a calibration module for obtaining the actual operation data of the zero-carbon building within a preset time period, and calibrating the initial building simulation model based on the actual operation data obtained; a simulation module for performing energy simulation of the zero-carbon building within a preset time period through the calibrated building simulation model to obtain energy simulation data of the zero-carbon building at multiple target moments within the preset time period; an evaluation module for evaluating the energy supply and demand matching of the zero-carbon building within the preset time period and the interaction between the zero-carbon building and the power grid within the preset time period based on the obtained energy simulation data; wherein the energy supply and demand matching includes the matching and consumption between electricity consumption and power generation of the zero-carbon building within the preset time period.

[0007] The embodiment of the present invention provides a zero-carbon building energy comprehensive evaluation method and device, which calibrates the established initial building simulation model based on the actual operation data of the zero-carbon building in a preset time period, and uses the calibrated building simulation model to perform energy simulation of the zero-carbon building in the preset time period, and obtains energy simulation data of the zero-carbon building at multiple target moments in the preset time period; then, based on the obtained energy simulation data, the energy supply and demand matching of the zero-carbon building in the preset time period and the interaction between the zero-carbon building and the power grid in the preset time period are evaluated. By adopting the above technology, the energy simulation data of the zero-carbon building at multiple moments in a specified time period can be obtained by simulation, and then the energy simulation data obtained can be used to quickly and accurately evaluate the energy supply and demand matching and the interaction with the power grid of the zero-carbon building in the specified time period, thereby facilitating real-time regulation of the energy of the zero-carbon building according to the zero-carbon building energy assessment results.

[0008] Other features and advantages of the present invention will be described in the following description, and partly become apparent from the description, or understood by practicing the present invention. The purpose and other advantages of the present invention are realized and obtained by the structures particularly pointed out in the description, claims and drawings.

[0009] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] In order to more clearly illustrate the specific implementation methods of the present invention or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0011] Figure 1 It is a flow chart of a zero-carbon building energy comprehensive evaluation method in an embodiment of the present invention;

[0012] Figure 2 This is an example diagram of a process for performing comprehensive energy evaluation of a zero-carbon building in an embodiment of the present invention;

[0013] Figure 3 It is a structural schematic diagram of a zero-carbon building energy comprehensive evaluation device in an embodiment of the present invention. DETAILED DESCRIPTION

[0014] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution of the present invention will be clearly and completely described in combination with the embodiments below. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0015] At present, there are few studies on the energy supply and demand of zero-carbon buildings, and there is a lack of supply and demand research based on project operation data. The energy assessment of zero-carbon buildings focuses on the supply and demand balance between annual production capacity and energy consumption, ignoring the energy supply and demand matching on a small time scale and the interaction between buildings and power grids. This will lead to poor accuracy and real-time performance of the energy assessment results of zero-carbon buildings, which is not conducive to real-time regulation of the energy of zero-carbon buildings based on the energy assessment results of zero-carbon buildings.

[0016] Based on this, the present invention provides a zero-carbon building energy comprehensive evaluation method and device, which can alleviate the problem of poor accuracy and real-time performance of existing zero-carbon building energy evaluation methods.

[0017] To facilitate understanding of this embodiment, a zero-carbon building energy comprehensive evaluation method disclosed in an embodiment of the present invention is first described in detail. Figure 1 As shown, the method may include the following steps:

[0018] Step S102: establishing an initial building simulation model of a zero-carbon building.

[0019] Step S104: obtaining actual operation data of the zero-carbon building within a preset period of time, and calibrating the initial building simulation model based on the obtained actual operation data.

[0020] Among them, the time scale of the preset time period can be years, months, days, hours, minutes, etc., without limitation; the actual operation data can include the actual electricity consumption, actual heat consumption, actual cooling consumption, actual gas consumption, etc. of the zero-carbon building during the preset time period, without limitation.

[0021] Step S106, performing energy simulation of the zero-carbon building within a preset period of time by using the calibrated building simulation model to obtain energy simulation data of the zero-carbon building at multiple target moments within the preset period of time.

[0022] The time interval between two adjacent target moments may be the same or different, and the time interval between two adjacent target moments is usually shorter than the duration of the preset time period.

[0023] Step S108, evaluating the energy supply and demand matching of the zero-carbon building within a preset period of time and the interaction between the zero-carbon building and the power grid within the preset period of time based on the obtained energy simulation data.

[0024] Among them, the energy supply and demand matching situation may include the matching and consumption between electricity consumption and power generation of zero-carbon buildings within a preset period of time.

[0025] In order to evaluate the energy supply and demand matching and interaction with the power grid of zero-carbon buildings, multiple evaluation indicators can be introduced to characterize the energy supply and demand matching and interaction with the power grid of zero-carbon buildings, so that after obtaining the energy simulation data, the energy simulation data can be used to calculate the values ​​of multiple evaluation indicators, and then the energy supply and demand matching and interaction with the power grid of zero-carbon buildings can be quantitatively evaluated by the value of the evaluation indicators.

[0026] The embodiment of the present invention provides a zero-carbon building energy comprehensive evaluation method, which calibrates the established initial building simulation model based on the actual operation data of the zero-carbon building in a preset time period, and uses the calibrated building simulation model to perform energy simulation of the zero-carbon building in the preset time period, and obtains energy simulation data of the zero-carbon building at multiple target moments in the preset time period; then, based on the obtained energy simulation data, the energy supply and demand matching of the zero-carbon building in the preset time period and the interaction between the zero-carbon building and the power grid in the preset time period are evaluated. By adopting the above technology, the energy simulation data of the zero-carbon building at multiple moments in a specified time period can be obtained by simulation, and then the obtained energy simulation data can be used to quickly and accurately evaluate the energy supply and demand matching and the interaction with the power grid of the zero-carbon building in the specified time period, so as to facilitate real-time regulation of the energy of the zero-carbon building according to the zero-carbon building energy assessment results.

[0027] As a possible implementation, the initial building simulation model may include a first initial simulation model for simulating the energy consumption of the zero-carbon building and a second initial simulation model for simulating the renewable energy production capacity of the zero-carbon building; based on this, the above step S102 (i.e., establishing the initial building simulation model of the zero-carbon building) may include:

[0028] Step 1: Obtain the boundary conditions of the zero-carbon building.

[0029] Among them, boundary conditions may include meteorological parameters, personnel information, indoor equipment usage time information, indoor thermal comfort, building operation strategies, etc., which are not limited.

[0030] Step 2: input the boundary conditions into the building simulation software, so as to establish a first initial simulation model and a second initial simulation model based on the boundary conditions through the building simulation software.

[0031] Among them, the building simulation software can use TRNSYS (Transient System Simulation Tool), EnergyPlus, DEST (Dynamic Environment Simulation Tool for Building), etc., without limitation.

[0032] After the boundary conditions of the zero-carbon building are input into the building simulation software, the building simulation software can use the input boundary conditions to establish the energy consumption model and renewable energy production capacity model of the zero-carbon building, so that after the energy consumption model and renewable energy production capacity model are calibrated, the energy consumption and renewable energy production capacity of the zero-carbon building can be simulated through the calibrated models.

[0033] As a possible implementation, the calibration of the initial building simulation model based on the actual operation data obtained in the above step S104 may include: calculating the value of the performance evaluation index of the initial building simulation model using the actual operation data obtained and the simulation data of the initial building simulation model; and adjusting the parameters of the initial building simulation model based on the value of the performance evaluation index.

[0034] Among them, the performance evaluation indicators can be NMBE (Normalized Mean Bias Error), RMSE (Root Mean Squared Error), MAPE (Mean Absolute Percentage Error), R 2 (coefficient of determination), CVRMSE (Coefficient of Variation of Root Mean Squared Error), etc., but are not limited to this.

[0035] As a possible implementation, the building simulation model may include a first simulation model and a second simulation model, the first simulation model is obtained by calibrating the first initial simulation model based on the actual operation data obtained, and the second simulation model is obtained by calibrating the second initial simulation model based on the actual operation data obtained, and the energy simulation data may include the renewable energy production capacity data and energy consumption data of the zero-carbon building at each target moment; based on this, the energy simulation of the zero-carbon building within a preset period of time through the calibrated building simulation model in the above step S106 may include: simulating the energy consumption of the zero-carbon building within the preset period of time through the first simulation model; simulating the renewable energy production capacity of the zero-carbon building within the preset period of time through the second simulation model.

[0036] As a possible implementation, the renewable energy capacity data may include the renewable energy capacity power of the zero-carbon building at each target time, and the energy consumption data may include the energy load power of the zero-carbon building at each target time; based on this, the above step S108 (i.e., evaluating the energy supply and demand matching of the zero-carbon building within a preset period of time and the interaction between the zero-carbon building and the power grid within the preset period of time based on the obtained energy simulation data) may include:

[0037] Step A1, based on the obtained renewable energy production capacity power and energy load power, evaluate the matching and absorption of electricity consumption and power generation of zero-carbon buildings within a preset period of time.

[0038] The energy self-sufficiency rate, energy self-consumption rate and energy matching time ratio of the zero-carbon building within the preset time period can be calculated based on the obtained renewable energy production capacity power and energy load power; as shown in Table 1, the energy self-sufficiency rate, energy self-consumption rate and energy matching time ratio can be collectively referred to as quantitative evaluation indicators of energy supply and demand matching. The energy self-sufficiency rate can represent the proportion of the self-consumption of renewable energy in the zero-carbon building within the preset time period that meets the energy demand. The energy self-consumption rate can represent the proportion of the renewable energy consumed by the zero-carbon building within the preset time period to the total renewable energy production capacity. The energy matching time ratio can represent the proportion of the time when the renewable energy production capacity of the zero-carbon building meets the energy demand within the preset time period.

[0039] Table 1 Quantitative evaluation indicators for energy supply and demand matching

[0040]

[0041] As shown in Table 1, the calculation formula for energy self-sufficiency rate can be:

[0042]

[0043] Among them, γ lc is the energy self-sufficiency rate, t 0is the initial time of the preset period, Δt is the duration of the preset period, dt is the time step, P load (t) is the renewable energy production power (in kW), P res (t) is the energy load power (in kW).

[0044] As shown in Table 1, the calculation formula for energy self-consumption rate can be:

[0045]

[0046] Among them, γ sc is the energy self-consumption rate.

[0047] As shown in Table 1, the calculation formula of the energy matching time ratio can be:

[0048]

[0049] Among them, γ lm is the energy matching time ratio,

[0050] In actual application, the power generation E res (t) and power consumption E load (t) Replace the power generation load P res (t) and power load P load (t), and thus the supply and demand relationship between building energy consumption and on-site renewable energy production capacity at different time scales (such as minutes, hours, days, months, years, etc.) can be evaluated through the calculated index values.

[0051] Step A2, based on the obtained renewable energy production power and energy load power, evaluate the interaction between the zero-carbon building and the power grid within a preset period of time.

[0052] Based on the obtained renewable energy production capacity power and energy load power, the net load, load peak, load average and load fluctuation value of the zero-carbon building interacting with the power grid within the preset period can be calculated; as shown in Table 2, the net load, load peak, load average and load fluctuation values ​​can be collectively referred to as quantitative evaluation indicators of power grid interaction characteristics. The net load can represent the difference between the power load and the renewable energy power generation load of the zero-carbon building within the preset period. The load peak, load average and load fluctuation value can respectively represent the highest level, average level and fluctuation of the difference between the power load and the renewable energy power generation load of the zero-carbon building within the preset period.

[0053] Table 2 Quantitative evaluation indicators of power grid interaction characteristics

[0054]

[0055] As shown in Table 2, based on the obtained renewable energy production power and energy load power, the net load of the zero-carbon building interacting with the grid at each target time can be calculated using the following formula:

[0056] P ner (t) = P load (t)-P res (t)

[0057] Among them, P net (t) is the net load (in kW), P load (t) is the renewable energy production power (in kW), P res (t) is the energy load power (in kW);

[0058] Then, based on the obtained net load, the following formula is used to calculate the load peak, load average and load fluctuation value of the zero-carbon building interacting with the power grid during the preset period:

[0059] P max =max(P net (t))

[0060]

[0061] S net =STD(P net (t))

[0062] Among them, P max is the peak load (in kW), P ave is the load mean (in kW), S net is the load fluctuation value (in kW), t 0 is the initial time of the preset period, Δt is the duration of the preset period, and dt is the time step.

[0063] In actual application, based on the net load of the zero-carbon building interacting with the power grid at each target moment, a curve of the net load of the zero-carbon building interacting with the power grid during a preset period of time can be drawn to provide an intuitive reference for relevant personnel through the curve.

[0064] For ease of understanding, the operation of the above-mentioned zero-carbon building energy comprehensive evaluation method is described as follows by taking a specific application as an example.

[0065] See also Figure 2 As shown in the figure, the comprehensive evaluation process of zero-carbon building energy mainly includes:

[0066] Step 201, building a model.

[0067] The boundary conditions (such as meteorological parameters, personnel information, indoor equipment usage time information, indoor thermal comfort, building operation strategy, etc.) can be set first, and then the boundary conditions can be input into TRNSYS to use the input boundary conditions to establish the building cooling, heating load and energy consumption model and renewable energy power generation load model respectively.

[0068] Step 202: Model calibration.

[0069] We can first obtain the actual operating data of the long-term monitored buildings (such as building energy consumption, production capacity, power grid electricity consumption, etc.), and then use the actual operating data to calibrate the model through the CVRMSE method (that is, calculate the CVRMSE and adjust the model parameters according to the CVRMSE).

[0070] Step 203, perform dynamic simulation of the model to obtain cold, heat and electricity simulation data.

[0071] The calibrated model (i.e., the building cooling and heating load and energy consumption model and the renewable energy power generation load model) can be used to simulate the building's cooling and heating load, energy consumption and renewable energy power generation load to obtain cooling, heating and electricity simulation data.

[0072] Step 204, evaluating the energy supply and demand matching of the building and the interaction between the building and the power grid.

[0073] The cooling, heating and electricity simulation data can be used to calculate the building's energy self-sufficiency rate, energy self-consumption rate, energy matching time ratio and grid interaction net load (i.e. the net load of the interaction between the building and the grid) at a specified time scale (such as year, month, day, hour, minute, etc.); the dynamic net load curve of the building can be drawn using the grid interaction net load; based on the dynamic net load curve of the building, the peak, mean and fluctuation values ​​of the net load can be statistically calculated.

[0074] The beneficial effects of the above zero-carbon building energy comprehensive evaluation method are mainly reflected in the following aspects:

[0075] (1) Improving the accuracy of zero-carbon building energy assessment: The existing zero-carbon building energy assessment method reflects the building energy utilization efficiency on a macro time scale (such as years and months), but the energy supply and demand relationship of zero-carbon buildings on a smaller time scale (such as hours and minutes) often shows obvious volatility. The above-mentioned zero-carbon building energy comprehensive evaluation method introduces multi-dimensional quantitative indicators to conduct zero-carbon building energy assessment. It can not only more accurately reflect the changes in electricity demand of buildings in different time periods, but also reveal the real-time interactive relationship between buildings and power grids, thereby effectively solving the problem of inaccurate assessment results of existing zero-carbon building energy assessment methods on a refined time scale, ensuring that subtle changes in the imbalance of zero-carbon building energy supply and demand are captured on more and finer time scales, and providing a basis and data support for real-time energy regulation of zero-carbon buildings.

[0076] (2) Enhance the real-time performance of zero-carbon building energy assessment: The above-mentioned comprehensive evaluation method for zero-carbon building energy introduces higher-frequency data simulation and data collection, and then uses simulation data to conduct detailed evaluation of the building's cooling, heating and electricity load data at different time scales such as years, months, days, hours and minutes. This can more accurately capture the real-time changes in the energy supply and demand relationship of zero-carbon buildings. This not only provides strong support for the real-time energy regulation of zero-carbon buildings, but also enables zero-carbon buildings to adaptively manage energy at different time scales, thereby reducing the sudden interaction between zero-carbon buildings and the power grid.

[0077] (3) Improve the utilization rate of renewable energy: Existing zero-carbon buildings often rely on simple energy supply and demand matching analysis for local consumption of renewable energy, which limits the actual utilization rate of renewable energy. The above zero-carbon building energy comprehensive evaluation method can track and analyze the use of renewable energy more accurately within a short time scale. Specifically, through further detailed analysis of indicators such as energy self-supply rate, energy self-consumption rate, and energy matching time ratio, it can effectively reduce the waste of renewable energy production capacity and improve the local consumption rate of renewable energy production capacity. This not only reduces carbon emissions, but also reduces the impact of renewable energy transmission on the power grid, which helps to build a more efficient and low-carbon energy utilization system.

[0078] Based on the above zero-carbon building energy comprehensive evaluation method, the embodiment of the present invention also provides a zero-carbon building energy comprehensive evaluation device, see Figure 3 As shown, the device may include the following modules:

[0079] The building module 302 is used to build an initial building simulation model of the zero-carbon building.

[0080] The calibration module 304 is used to obtain actual operation data of the zero-carbon building within a preset period of time, and calibrate the initial building simulation model based on the obtained actual operation data.

[0081] The simulation module 306 is used to perform energy simulation of the zero-carbon building within a preset period of time using the calibrated building simulation model to obtain energy simulation data of the zero-carbon building at multiple target moments within the preset period of time.

[0082] The evaluation module 308 is used to evaluate the energy supply and demand matching of the zero-carbon building within a preset period of time and the interaction between the zero-carbon building and the power grid within the preset period of time based on the obtained energy simulation data; wherein the energy supply and demand matching includes the matching and consumption between electricity consumption and power generation of the zero-carbon building within the preset period of time.

[0083] By using the above-mentioned zero-carbon building comprehensive energy evaluation device, the energy simulation data of the zero-carbon building at multiple times in a specified time period can be obtained through simulation, and then the obtained energy simulation data can be used to quickly and accurately evaluate the energy supply and demand matching and the interaction with the power grid of the zero-carbon building in the specified time period, thereby facilitating real-time regulation of the energy of the zero-carbon building according to the zero-carbon building energy assessment results.

[0084] The above-mentioned initial building simulation model may include a first initial simulation model for simulating the energy consumption of the zero-carbon building and a second initial simulation model for simulating the renewable energy production capacity of the zero-carbon building; based on this, the above-mentioned establishment module 302 can also be used to: obtain the boundary conditions of the zero-carbon building; input the boundary conditions into the building simulation software, so as to establish the first initial simulation model and the second initial simulation model based on the boundary conditions through the building simulation software.

[0085] The above-mentioned building simulation model may include a first simulation model and a second simulation model. The first simulation model is obtained by calibrating the first initial simulation model based on the actual operation data obtained, and the second simulation model is obtained by calibrating the second initial simulation model based on the actual operation data obtained. The above-mentioned energy simulation data may include the renewable energy production capacity data and energy consumption data of the zero-carbon building at each target moment; based on this, the above-mentioned simulation module 306 can also be used to: simulate the energy consumption of the zero-carbon building within a preset period of time through the first simulation model; simulate the renewable energy production capacity of the zero-carbon building within a preset period of time through the second simulation model.

[0086] The above-mentioned renewable energy production capacity data may include the renewable energy production capacity power of the zero-carbon building at each target time, and the above-mentioned energy consumption data may include the energy load power of the zero-carbon building at each target time; based on this, the above-mentioned evaluation module 308 can also be used to: evaluate the matching and absorption of electricity consumption and power generation of the zero-carbon building within a preset period of time based on the obtained renewable energy production capacity power and energy load power; evaluate the interaction between the zero-carbon building and the power grid within a preset period of time based on the obtained renewable energy production capacity power and energy load power.

[0087] The above-mentioned evaluation module 308 can also be used to calculate the energy self-sufficiency rate, energy self-consumption rate and energy matching time ratio of the zero-carbon building within a preset time period based on the obtained renewable energy production capacity power and energy load power; wherein the energy self-sufficiency rate represents the proportion of the self-consumption of renewable energy of the zero-carbon building within the preset time period that meets the energy demand, the energy self-consumption rate represents the proportion of the renewable energy consumed by the zero-carbon building within the preset time period to the total renewable energy production capacity, and the energy matching time ratio represents the proportion of the time when the renewable energy production capacity of the zero-carbon building meets the energy demand within the preset time period.

[0088] The above-mentioned evaluation module 308 can also be used to: calculate the net load, load peak, load average and load fluctuation value of the zero-carbon building interacting with the power grid within a preset time period based on the obtained renewable energy production capacity power and energy load power; wherein the net load represents the difference between the power load of the zero-carbon building and the renewable energy power generation load within the preset time period, and the load peak, the load average and the load fluctuation value respectively represent the highest level, average level and fluctuation of the difference between the power load of the zero-carbon building and the renewable energy power generation load within the preset time period.

[0089] The evaluation module 308 may also be used to draw a curve showing the net load of the zero-carbon building interacting with the power grid over time within a preset period of time, based on the net load of the zero-carbon building interacting with the power grid at each target time.

[0090] The zero-carbon building energy comprehensive evaluation device provided in the embodiment of the present invention has the same implementation principle and technical effects as those in the aforementioned zero-carbon building energy comprehensive evaluation method embodiment. For the sake of brief description, for matters not mentioned in the embodiment of the zero-carbon building energy comprehensive evaluation device, reference may be made to the corresponding contents in the aforementioned zero-carbon building energy comprehensive evaluation method embodiment.

[0091] Unless otherwise specifically stated, the relative steps, numerical expressions and values ​​of the components and steps set forth in these embodiments do not limit the scope of the present invention.

[0092] If the functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a non-volatile computer-readable storage medium that is executable by a processor. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, or the part of the technical solution, can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in each embodiment of the present invention. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk.

[0093] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0094] Finally, it should be noted that the above-described embodiments are only specific implementations of the present invention, which are used to illustrate the technical solutions of the present invention, rather than to limit them. The protection scope of the present invention is not limited thereto. Although the present invention is described in detail with reference to the above-described embodiments, ordinary technicians in the field should understand that any technician familiar with the technical field can still modify the technical solutions recorded in the above-described embodiments within the technical scope disclosed by the present invention, or can easily think of changes, or make equivalent replacements for some of the technical features therein; and these modifications, changes or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A zero-carbon building energy comprehensive evaluation method, characterized in that: include: Establishing an initial building simulation model of the zero-carbon building; Acquire actual operation data of the zero-carbon building within a preset period of time, and calibrate the initial building simulation model based on the obtained actual operation data; Performing energy simulation of a zero-carbon building within a preset period of time by using the calibrated building simulation model to obtain energy simulation data of the zero-carbon building at multiple target moments within the preset period of time; Based on the obtained energy simulation data, the energy supply and demand matching of the zero-carbon building within the preset period and the interaction between the zero-carbon building and the power grid within the preset period are evaluated; wherein the energy supply and demand matching includes the matching and consumption between electricity consumption and power generation of the zero-carbon building within the preset period.

2. The zero-carbon building energy comprehensive evaluation method according to claim 1 is characterized in that: The initial building simulation model includes a first initial simulation model for simulating the energy consumption of the zero-carbon building and a second initial simulation model for simulating the renewable energy production capacity of the zero-carbon building; Establishing an initial building simulation model of the zero-carbon building, including: Obtaining boundary conditions of the zero-carbon building; The boundary conditions are input into building simulation software, so as to establish the first initial simulation model and the second initial simulation model based on the boundary conditions through the building simulation software.

3. The zero-carbon building energy comprehensive evaluation method according to claim 2 is characterized in that: The building simulation model includes a first simulation model and a second simulation model, the first simulation model is obtained by calibrating the first initial simulation model based on the actual operation data obtained, the second simulation model is obtained by calibrating the second initial simulation model based on the actual operation data obtained, and the energy simulation data includes renewable energy production capacity data and energy consumption data of the zero-carbon building at each target time; The calibrated building simulation model is used to simulate the energy of a zero-carbon building within a preset period of time, including: Simulating the energy consumption of the zero-carbon building within a preset period of time by using the first simulation model; The renewable energy production capacity of the zero-carbon building within a preset time period is simulated by the second simulation model.

4. The zero-carbon building energy comprehensive evaluation method according to claim 3 is characterized in that: The renewable energy capacity data includes the renewable energy capacity power of the zero-carbon building at each target time, and the energy consumption data includes the energy load power of the zero-carbon building at each target time; Based on the obtained energy simulation data, the energy supply and demand matching of the zero-carbon building in a preset period and the interaction between the zero-carbon building and the power grid in the preset period are evaluated, including: Based on the obtained renewable energy production capacity and energy load power, evaluate the matching and absorption of electricity consumption and power generation of the zero-carbon building within a preset period of time; Based on the obtained renewable energy production power and energy load power, the interaction between the zero-carbon building and the power grid within a preset time period is evaluated.

5. The zero-carbon building energy comprehensive evaluation method according to claim 4 is characterized in that: Based on the obtained renewable energy production capacity and energy load power, the matching and consumption of electricity consumption and power generation of the zero-carbon building within a preset period of time are evaluated, including: Based on the obtained renewable energy production capacity power and energy load power, the energy self-sufficiency rate, energy self-consumption rate and energy matching time ratio of the zero-carbon building within the preset time period are calculated; wherein, the energy self-sufficiency rate represents the proportion of the self-consumption of renewable energy of the zero-carbon building within the preset time period to meet the energy demand, the energy self-consumption rate represents the proportion of the renewable energy consumed by the zero-carbon building within the preset time period to the total renewable energy production capacity, and the energy matching time ratio represents the proportion of the time when the renewable energy production capacity of the zero-carbon building within the preset time period meets the energy demand.

6. The zero-carbon building energy comprehensive evaluation method according to claim 4 is characterized in that: Based on the obtained renewable energy production power and energy load power, the interaction between the zero-carbon building and the power grid within a preset period is evaluated, including: Based on the obtained renewable energy production capacity power and energy load power, the net load, load peak, load average and load fluctuation value of the zero-carbon building interacting with the power grid within a preset time period are calculated; wherein the net load represents the difference between the electricity load and the renewable energy power generation load of the zero-carbon building within the preset time period, and the load peak, the load average and the load fluctuation value respectively represent the highest level, average level and fluctuation of the difference between the electricity load and the renewable energy power generation load of the zero-carbon building within the preset time period.

7. The zero-carbon building energy comprehensive evaluation method according to claim 5 is characterized in that: The calculation formula of the energy self-sufficiency rate is: Among them, γ lc is the energy self-supply rate, t0 is the initial time of the preset period, Δt is the duration of the preset period, dt is the time step, P load (t) is the renewable energy production power, P res (t) is the energy load power; The calculation formula of the energy self-consumption rate is: Among them, γ sc is the energy self-consumption rate; The calculation formula of the energy matching time ratio is: Among them, γ lm is the energy matching time ratio, 8. The zero-carbon building energy comprehensive evaluation method according to claim 6 is characterized in that: Based on the obtained renewable energy production power and energy load power, the net load, load peak, load average and load fluctuation value of the zero-carbon building interacting with the power grid within a preset period are calculated, including: Based on the obtained renewable energy production power and energy load power, the net load of the zero-carbon building interacting with the grid at each target time is calculated using the following formula: P net (t)=P load (t)-P res (t) Among them, P net (t) is the net load, P load (t) is the renewable energy production power, P res (t) is the energy load power; Based on the obtained net load, the load peak, load average and load fluctuation value of the zero-carbon building interacting with the power grid within a preset period are calculated using the following formula: P max =max(P net (t)) S net =STD(P net (t)) Among them, P max is the load peak, P ave is the load mean, S net is the load fluctuation value, t0 is the initial time of the preset period, Δt is the duration of the preset period, and dt is the time step.

9. The zero-carbon building energy comprehensive evaluation method according to claim 8 is characterized in that: Based on the obtained renewable energy production power and energy load power, the interaction between the zero-carbon building and the power grid within a preset period is evaluated, which also includes: Based on the net load of the zero-carbon building interacting with the power grid at each target moment, a curve of the net load of the zero-carbon building interacting with the power grid over time within a preset period is drawn.

10. A zero-carbon building energy comprehensive evaluation device, characterized in that: include: An establishment module is used to establish an initial building simulation model of the zero-carbon building; A calibration module, used to obtain actual operation data of the zero-carbon building within a preset period of time, and calibrate the initial building simulation model based on the obtained actual operation data; A simulation module is used to perform energy simulation of a zero-carbon building within a preset period of time through a calibrated building simulation model to obtain energy simulation data of the zero-carbon building at multiple target moments within the preset period of time; An evaluation module is used to evaluate the energy supply and demand matching of the zero-carbon building within a preset period of time and the interaction between the zero-carbon building and the power grid within the preset period of time based on the obtained energy simulation data; wherein the energy supply and demand matching includes the matching and consumption between electricity consumption and power generation of the zero-carbon building within the preset period of time.

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