CN111222219A - Environment-friendly insulating substitute gas performance evaluation method, device and equipment - Google Patents
Environment-friendly insulating substitute gas performance evaluation method, device and equipment Download PDFInfo
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Abstract
The application discloses a method, a device and equipment for evaluating the performance of environment-friendly insulating substitute gas, which are used for constructing a performance evaluation model of the environment-friendly insulating substitute gas aiming at three parameters of electrical strength, liquefaction temperature and GWP, carrying out quantitative analysis on the insulating performance and the environment-friendly performance of a target insulating substitute gas according to the performance evaluation model, and providing guidance for selecting the insulating substitute gas with environment-friendly performance by taking the three parameters of gas electrical strength, liquefaction temperature and GWP as the basis.
Description
Technical Field
The application relates to the technical field of electricity, in particular to a method, a device and equipment for evaluating the performance of environment-friendly insulating substitute gas.
Background
SF6The gas has excellent insulating and arc extinguishing performance, and has the advantages of excellent insulating performance and arc extinguishing capability, stable chemical property, no toxicity, no flammability and the like, so that the gas dominates medium-high voltage electrical equipment. The important components of high-voltage power transmission systems such as Gas Insulated Switchgear (GIS), Gas Insulated Bus (GIB) and gas insulated transmission pipeline (GIL) are almost all made of SF6And mixed gas thereof as a gas insulating medium. Currently, there are about 1 million tons of SF per year6Gas applied in the electrical field, accounting for SF6More than 80% of the total usage amount; but SF6The greenhouse potential (GWP) of a gas is CO223900 times of gas, has strong infrared ray absorbing ability, and has a long retention time in atmosphere of 3200 years, which is a significant cause of global warming, and SF6When breakdown discharge occurs, the gas is decomposed to generate S2F10Toxic fluorine-containing compounds, which seriously threaten the production safety and the personnel health, and therefore, the insulation strength and SF are sought6Insulating substitute gases with comparable or even better performance and lower liquefaction temperatures are currently the focus of research.
The gas liquefaction temperature can be generally calculated according to the gas saturation vapor pressure characteristic, and the saturation vapor pressure characteristic has decisive significance on the gas proportioning scheme in the actual power equipment. Existing substitute gases can be divided into four broad categories: (1) a conventional gas; (2) gases such as fluorinated ketones and cyanogen fluoride; (3) a CFx-type gas; (4) HFO-type gases. The electrical strength, the liquefaction temperature and the GWP data of the four gases are not complete, and the three parameters of different gases do not all satisfy expected values at the same time, so that guidance is provided for selecting an insulating substitute gas with environment-friendly performance based on the three parameters of the electrical strength, the liquefaction temperature and the GWP, and the technical problem to be solved by technical personnel in the field is urgently needed.
Disclosure of Invention
The application provides a method, a device and equipment for evaluating the performance of an environment-friendly insulating substitute gas, which are used for providing guidance for selecting the insulating substitute gas with environment-friendly performance on the basis of three parameters of gas electrical strength, liquefaction temperature and GWP.
In view of the above, the first aspect of the present application provides a method for evaluating the performance of an environment-friendly insulating substitute gas, comprising:
calculating the maximum electron impact ionization cross section, electronegativity, dipole moment and polarizability of the gas based on the molecular structure of the target insulating substitute gas to be researched;
constructing an electrical strength prediction model of the target insulating substitute gas, and predicting the electrical strength of the target insulating substitute gas based on the electrical strength prediction model;
calculating the potential value of the greenhouse effect of the target insulation substitute gas based on a preset GWP calculation formula;
calculating the liquefaction temperature of the target insulation substitute gas based on a preset saturation vapor pressure calculation formula corresponding to the saturation vapor pressure and the liquefaction temperature;
constructing a performance evaluation model of the environment-friendly type insulation substitute gas based on the electric strength, the greenhouse effect potential value and the saturated vapor pressure, and evaluating the target insulation substitute gas to substitute SF according to the performance evaluation model of the environment-friendly type insulation substitute gas6The feasibility of the gas, and the performance evaluation model of the environment-friendly insulating substitute gas is as follows:
k＝aEr+bGWP+cTb；
wherein k is a substitution performance evaluation quantization parameter, a, b and c are all weight coefficients, ErFor electrical strength, GWP is the potential for greenhouse effect, TbIs the liquefaction temperature.
Optionally, the gas maximum electron impact ionization cross section is calculated by using a Binary-Encounter-Bethe formula, where the Binary-Encounter-Bethe formula is:
Qion＝∑jδj
wherein T is T/B, U is U/B, a0＝5.292，R＝13.61eV，δjIs the electron impact ionization section corresponding to each molecular orbit, T is the incident electron energy, B is the binding energy of each molecular electron, U is the kinetic energy of each molecular orbit, N is the occupied number of each orbital electron, and the total electron impact ionization section QionIonization cross section delta for each molecular orbitaljThe sum of (a).
Optionally, the preset GWP calculation formula is:
wherein RFf is the temperature raising effect of the gas chemical; gasiIs a gas chemical i to be evaluated; TH is the evaluation time length in calculation; a isiIs the radiation efficiency of 1kg of gas chemical i, aCO21kg of CO2The radiation efficiency of (a) is W/m2kg；[Gasi(t)]A proportion of 1kg of the gas chemical i that is emitted to the atmosphere when t is 0, decays with time; CO 22(t) 1kg of CO2The proportion of time-dependent decay when t is 0.
Optionally, the preset saturated vapor pressure calculation formula is:
lg(133p)＝A-B/(t+C)；
wherein p is saturated vapor pressure, t is liquefaction temperature, and A, B, C are the Antoine characteristic constants of gas.
Optionally, the method further comprises:
establishing a three-dimensional stereogram of the target insulating substitute gas with respect to the electrical intensity, the greenhouse effect potential and the liquefaction temperature, the three-dimensional stereogram being used for analysis for visual analysis of the greenhouse effect potential.
The present application in a second aspect provides an environment-friendly insulating substitute gas performance evaluation device, comprising:
the first calculation module is used for calculating the maximum electron impact ionization section, electronegativity, dipole moment and polarizability of the gas based on the molecular structure of the target insulating substitute gas to be researched;
the modeling module is used for constructing an electrical strength prediction model of the target insulating substitute gas and predicting the electrical strength of the target insulating substitute gas based on the electrical strength prediction model;
the second calculation module is used for calculating the greenhouse effect potential value of the target insulation substitute gas based on a preset GWP calculation formula;
the third calculation module is used for calculating the liquefaction temperature of the target insulation substitute gas based on a preset saturation vapor pressure calculation formula corresponding to the saturation vapor pressure and the liquefaction temperature;
a fourth calculation module for constructing a performance evaluation model of the environmentally-friendly substitute insulating gas based on the electrical strength, the greenhouse effect potential and the saturation vapor pressure, and evaluating the target substitute insulating gas for SF according to the performance evaluation model of the environmentally-friendly substitute insulating gas6The feasibility of the gas, and the performance evaluation model of the environment-friendly insulating substitute gas is as follows:
k＝aEr+bGWP+cTb；
wherein k is a substitution performance evaluation quantization parameter, a, b and c are all weight coefficients, ErFor electrical strength, GWP is the potential for greenhouse effect, TbIs the liquefaction temperature.
Optionally, the method further comprises:
a visual analysis module for establishing a three-dimensional stereogram of the target insulating substitute gas with respect to the electrical strength, the greenhouse effect potential and the liquefaction temperature, the three-dimensional stereogram being used for analyzing a visual analysis of the greenhouse effect potential.
A third aspect of the present application provides an environment-friendly insulating substitute gas performance evaluation apparatus, the apparatus including a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is configured to execute any one of the environmentally friendly insulating substitute gas performance evaluation methods of the first aspect according to instructions in the program code.
A fourth aspect of the present application provides a computer-readable storage medium for storing program code for executing any one of the environmentally friendly insulating substitute gas performance evaluation methods of the first aspect.
A fifth aspect of the present application provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform any one of the environmentally friendly insulating substitute gas performance evaluation methods of the first aspect.
According to the technical scheme, the embodiment of the application has the following advantages:
the application provides an environment-friendly insulating substitute gas performance evaluation method, which comprises the following steps: calculating the maximum electron impact ionization cross section, electronegativity, dipole moment and polarizability of the gas based on the molecular structure of the target insulating substitute gas to be researched; constructing an electrical strength prediction model of the target insulation substitute gas, and predicting the electrical strength of the target insulation substitute gas based on the electrical strength prediction model; calculating the potential value of the greenhouse effect of the target insulating substitute gas based on a preset GWP calculation formula; calculating the liquefaction temperature of the target insulation substitute gas based on a preset saturation vapor pressure calculation formula corresponding to the saturation vapor pressure and the liquefaction temperature; constructing a performance evaluation model of the environment-friendly insulating substitute gas based on the electric strength, the greenhouse effect potential value and the saturated vapor pressure, and evaluating the target insulating substitute gas to substitute SF according to the performance evaluation model of the environment-friendly insulating substitute gas6The feasibility of the gas, the performance evaluation model of the environment-friendly insulating substitute gas is as follows:
k＝aEr+bGWP+cTb；
wherein k is a substitution performance evaluation quantization parameter, a, b and c are all weight coefficients, ErFor electrical strength, GWP is the potential for greenhouse effect, TbFor liquefactionAnd (3) temperature.
According to the performance evaluation method of the environment-friendly insulating substitute gas, a performance evaluation model of the environment-friendly insulating substitute gas is established according to three parameters of electrical strength, liquefaction temperature and GWP, the insulating performance and the environment-friendly performance of the target insulating substitute gas are quantitatively analyzed according to the performance evaluation model, and guidance is provided for selecting the insulating substitute gas with environment-friendly performance by taking the three parameters of the electrical strength, the liquefaction temperature and the GWP as the basis.
Drawings
FIG. 1 is a schematic flow chart of a method for evaluating the performance of an environmentally-friendly insulating substitute gas provided in the examples of the present application;
FIG. 2 is another schematic flow chart of a method for evaluating the performance of an environmentally friendly insulating substitute gas provided in the examples of the present application;
fig. 3 is a schematic structural diagram of an environment-friendly insulating substitute gas performance evaluation device provided in an embodiment of the present application.
Detailed Description
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
For easy understanding, referring to fig. 1, an embodiment of the method for evaluating the performance of an environmentally friendly insulating substitute gas provided in the present application includes:
It should be noted that, in the embodiment of the present application, the maximum electron impact ionization cross section of the gas and the molecular physicochemical properties, which may include electronegativity, dipole moment and polarizability, are first calculated according to the molecular structure of the target insulating substitute gas to be studied. The maximum electron impact ionization section of the gas can be calculated by adopting a Binary-Encounter-Bethe formula, wherein the Binary-Encounter-Bethe formula is as follows:
Qion＝∑jδj
wherein T is T/B, U is U/B, a0＝5.292，R＝13.61eV，δjIs the electron impact ionization section corresponding to each molecular orbit, T is the incident electron energy, B is the binding energy of each molecular electron, U is the kinetic energy of each molecular orbit, N is the occupied number of each orbital electron, and the total electron impact ionization section QionIonization cross section delta for each molecular orbitaljThe sum of (a). Besides the Binary-Encounter-Bethe formula adopted in the embodiment of the application, Deutsch-
The formula calculates the maximum electron impact ionization section of the gas. The molecular physical and chemical properties can be calculated by adopting a density functional theory and can be completed in Gaussian 09 software.
And 102, constructing an electrical strength prediction model of the target insulation substitute gas, and predicting the electrical strength of the target insulation substitute gas based on the electrical strength prediction model.
In order to accurately predict the gas electrical strength, the prediction model needs to have as large a correlation coefficient as possible. General coefficient of correlation R2If the correlation value is more than 0.8, the correlation between the two is considered to be strong. Therefore, the patent finds the prediction model (R) with the highest correlation coefficient by using two fitting equation forms of linear and nonlinear2>0.85). In general, when predicting variablesWhen approximating a normal distribution, it will be processed by regression theory. The regression method comprises least square linear regression and stable regression, and the regression method determines parameter values in a fitting equation. Studies have found that there is not only a linear relationship between the molecular basis properties and the electrical strength of the gas, but that there is likely also a non-linear relationship between the predictor variables and the electrical strength. Therefore, the nonlinear relation between the prediction variable and the electrical strength is researched based on the regression theory, and theoretical support is provided for establishing a more accurate gas insulation performance prediction model. In the present application, the predicted variable form is divided into two forms of a single variable and a complex variable. The single variable consists of basic molecular parameters such as electronegativity, polarizability, vertical ionization energy, maximum electron impact ionization cross section and the like. The composite variable is composed of single variables according to different functional forms. When the correlation coefficient of the prediction model reaches above 0.85 or higher and the correlation coefficient is not increased any more, the corresponding fitting equation is the gas electric intensity prediction model.
And 103, calculating the greenhouse effect potential value of the target insulation substitute gas based on a preset GWP calculation formula.
It should be noted that Global Warming Potential (GWP) is an important parameter for describing greenhouse gas radiation effect. The GWP value of the interpedictional climate Change Commission (IPCC) on gas chemical i is defined as the time integral of the radiation effect caused over a certain period of time from the release of 1kg of gas chemical i, relative to the release of an equivalent amount of reference gas (CO) under the same conditions2) So that the GWP value of gas chemical i is
Wherein RFf is the temperature rising effect of the gas chemical substance, namely the global mean radiation compelling value; gasiIs a gas chemical i to be evaluated; TH is the evaluation time length in calculation; a isiThe radiation efficiency was 1kg of the gas chemical i,
1kg of CO2The radiation efficiency of (a) is W/m2kg；[Gasi(t)]A proportion of 1kg of the gas chemical i that is emitted to the atmosphere when t is 0, decays with time; CO 22(t) 1kg of CO2The proportion of time-dependent decay when t is 0.
And 104, calculating the liquefaction temperature of the target insulation substitute gas based on a preset saturation vapor pressure calculation formula with the saturation vapor pressure corresponding to the liquefaction temperature.
It should be noted that increasing the inflation pressure is an important means for improving the gas insulation performance and the load capacity of the insulation equipment. However, according to the calculation formula of the saturated vapor pressure of the substance, the gas liquefaction temperature will also increase with the increase of the inflation pressure. In the formula for calculating the saturated vapor pressure of the substance, the Antoine equation is a simple three-parameter vapor pressure equation, is suitable for any gas molecule, has a very wide application temperature range, and has the preset saturated vapor pressure calculation formula:
lg(133p)＝A-B/(t+C)；
wherein p is saturated vapor pressure, t is liquefaction temperature, and A, B, C are characteristic constants of Antoine of gas, and can be obtained by fitting experimental data by a least square method.
It should be further noted that there is no time-series limitation in the implementation of steps 102 to 104 in the embodiment of the present application.
105, constructing a performance evaluation model of the environment-friendly insulating substitute gas based on the electrical strength, the greenhouse effect potential value and the saturated vapor pressure, and evaluating the target insulating substitute gas to substitute SF according to the performance evaluation model of the environment-friendly insulating substitute gas6Feasibility of gas.
It should be noted that, the performance evaluation model of the environment-friendly insulating substitute gas in the embodiment of the present application is:
k＝aEr+bGWP+cTb；
wherein k is a substitution performance evaluation quantization parameter, a, b and c are all weight coefficients, ErFor electrical strength, GWP is the potential for greenhouse effect, TbIs the liquefaction temperature. Therefore, by the environment-friendly insulationThe substitute performance evaluation quantitative parameter k of the substitute gas performance evaluation model can numerically and quantitatively express the insulation performance and the environmental protection performance of the target insulation substitute gas.
The method for evaluating the performance of the environment-friendly insulating substitute gas provided by the embodiment of the application is used for constructing a performance evaluation model of the environment-friendly insulating substitute gas according to three parameters of electrical strength, liquefaction temperature and GWP, carrying out quantitative analysis on the insulating performance and the environmental performance of a target insulating substitute gas according to the performance evaluation model, and providing guidance for selecting the insulating substitute gas with environment-friendly performance by taking the three parameters of gas electrical strength, liquefaction temperature and GWP as the basis.
As an improvement to the method for evaluating the performance of the environmentally-friendly insulating substitute gas provided in the embodiment of the present application, after steps 102 to 104, the method may further include:
and 106, establishing a three-dimensional stereogram of the target insulating substitute gas about the electric intensity, the greenhouse effect potential and the liquefaction temperature, wherein the three-dimensional stereogram is used for analyzing and carrying out visual analysis on the greenhouse effect potential.
The screening of the environment-friendly insulating substitute gas is mainly realized from three aspects of gas electrical strength, liquefaction temperature and global warming potential. In order to establish a complete evaluation system, 100 kinds of alternative gases can be selected for testing, 100 kinds of alternative gas electrical strength, liquefaction temperature and GWP are calculated, numerical analysis and statistics are respectively carried out on the electrical strength, the liquefaction temperature and the GWP value of each kind of gas, a three-dimensional stereograph about the electrical strength, the greenhouse effect potential value and the liquefaction temperature is established, alternative gases with high electrical strength, low liquefaction temperature and low GWP value are screened, and the ranges of the electrical strength, the liquefaction temperature and the GWP of the environment-friendly insulating alternative gas are divided based on the screening result.
For easy understanding, referring to fig. 3, the present application also provides an embodiment of an apparatus for evaluating performance of an environmentally-friendly insulating substitute gas, comprising:
the first calculation module is used for calculating the maximum electron impact ionization section, electronegativity, dipole moment and polarizability of the gas based on the molecular structure of the target insulating substitute gas to be researched;
the modeling module is used for constructing an electrical strength prediction model of the target insulation substitute gas and predicting the electrical strength of the target insulation substitute gas based on the electrical strength prediction model;
the second calculation module is used for calculating the greenhouse effect potential value of the target insulation substitute gas based on a preset GWP calculation formula;
the third calculation module is used for calculating the liquefaction temperature of the target insulation substitute gas based on a preset saturation vapor pressure calculation formula corresponding to the saturation vapor pressure and the liquefaction temperature;
a fourth calculation module for constructing a performance evaluation model of the environment-friendly type insulating substitute gas based on the electrical strength, the greenhouse effect potential value and the saturated vapor pressure, and evaluating the target insulating substitute gas to substitute SF according to the performance evaluation model of the environment-friendly type insulating substitute gas6The feasibility of the gas, the performance evaluation model of the environment-friendly insulating substitute gas is as follows:
k＝aEr+bGWP+cTb；
wherein k is a substitution performance evaluation quantization parameter, a, b and c are all weight coefficients, ErFor electrical strength, GWP is the potential for greenhouse effect, TbIs the liquefaction temperature.
Further still include:
and the visual analysis module is used for establishing a three-dimensional stereogram of the target insulating substitute gas about the electrical intensity, the greenhouse effect potential and the liquefaction temperature, and the three-dimensional stereogram is used for analyzing and visually analyzing the greenhouse effect potential.
The application also provides an embodiment of an environment-friendly insulating substitute gas performance evaluation device, which comprises a processor and a memory:
the memory is used for storing the program codes and transmitting the program codes to the processor;
the processor is used for executing the environmentally-friendly insulating substitute gas performance evaluation method in the environmentally-friendly insulating substitute gas performance evaluation method embodiment according to instructions in the program code.
Also provided in this application are embodiments of a computer-readable storage medium for storing program code for executing the environmentally friendly insulating substitute gas performance evaluation method of the above-described embodiments of the environmentally friendly insulating substitute gas performance evaluation method.
There is also provided a computer program product comprising instructions which, when run on a computer, cause the computer to perform the environmentally friendly insulating substitute gas performance evaluation method of the above embodiments of the environmentally friendly insulating substitute gas performance evaluation method.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed to by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. An environment-friendly insulating substitute gas performance evaluation method is characterized by comprising the following steps:
calculating the maximum electron impact ionization cross section, electronegativity, dipole moment and polarizability of the gas based on the molecular structure of the target insulating substitute gas to be researched;
constructing an electrical strength prediction model of the target insulating substitute gas, and predicting the electrical strength of the target insulating substitute gas based on the electrical strength prediction model;
calculating the potential value of the greenhouse effect of the target insulation substitute gas based on a preset GWP calculation formula;
calculating the liquefaction temperature of the target insulation substitute gas based on a preset saturation vapor pressure calculation formula corresponding to the saturation vapor pressure and the liquefaction temperature;
constructing a performance evaluation model of the environment-friendly type insulation substitute gas based on the electric strength, the greenhouse effect potential value and the saturated vapor pressure, and evaluating the target insulation substitute gas to substitute SF according to the performance evaluation model of the environment-friendly type insulation substitute gas6The feasibility of the gas, and the performance evaluation model of the environment-friendly insulating substitute gas is as follows:
k＝aEr+bGWP+cTb；
wherein k is a substitution performance evaluation quantization parameter, a, b and c are all weight coefficients, ErFor electrical strength, GWP is the potential for greenhouse effect, TbIs the liquefaction temperature.
2. The method for evaluating the performance of the environment-friendly insulating substitute gas according to claim 1, wherein the maximum electron impact ionization cross section of the gas is calculated by using a Binary-Encounter-Bethe formula, and the Binary-Encounter-Bethe formula is as follows:
Qion＝∑jδj
wherein T is T/B, U is U/B, a0＝5.292，R＝13.61eV，δjIs the electron impact ionization section corresponding to each molecular orbit, T is the incident electron energy, B is the binding energy of each molecular electron, U is the kinetic energy of each molecular orbit, N is the occupied number of each orbital electron, and the total electron impact ionization section QionIonization cross section delta for each molecular orbitaljThe sum of (a).
3. The method for evaluating the performance of an environmentally friendly insulating replacement gas as claimed in claim 1, wherein the preset GWP is calculated by the formula:
wherein RFf is the temperature raising effect of the gas chemical; gasiIs a gas chemical i to be evaluated; TH is the evaluation time length in calculation; a isiThe radiation efficiency was 1kg of the gas chemical i,
1kg of CO2The radiation efficiency of (a) is W/m2kg；[Gasi(t)]A proportion of 1kg of the gas chemical i that is emitted to the atmosphere when t is 0, decays with time; CO 22(t) 1kg of CO2The proportion of time-dependent decay when t is 0.
4. The method for evaluating the performance of an environmentally friendly insulating substitute gas according to claim 1, wherein the preset saturated vapor pressure calculation formula is:
lg(133p)＝A-B/(t+C)；
wherein p is saturated vapor pressure, t is liquefaction temperature, and A, B, C are the Antoine characteristic constants of gas.
5. The method for evaluating the performance of an environmentally friendly insulating substitute gas according to claim 1, further comprising:
establishing a three-dimensional stereogram of the target insulating substitute gas with respect to the electrical intensity, the greenhouse effect potential and the liquefaction temperature, the three-dimensional stereogram being used for analysis for visual analysis of the greenhouse effect potential.
6. An environment-friendly insulating substitute gas performance evaluation device, comprising:
the first calculation module is used for calculating the maximum electron impact ionization section, electronegativity, dipole moment and polarizability of the gas based on the molecular structure of the target insulating substitute gas to be researched;
the modeling module is used for constructing an electrical strength prediction model of the target insulating substitute gas and predicting the electrical strength of the target insulating substitute gas based on the electrical strength prediction model;
the second calculation module is used for calculating the greenhouse effect potential value of the target insulation substitute gas based on a preset GWP calculation formula;
the third calculation module is used for calculating the liquefaction temperature of the target insulation substitute gas based on a preset saturation vapor pressure calculation formula corresponding to the saturation vapor pressure and the liquefaction temperature;
a fourth calculation module for constructing a performance evaluation model of the environmentally-friendly substitute insulating gas based on the electrical strength, the greenhouse effect potential and the saturation vapor pressure, and evaluating the target substitute insulating gas for SF according to the performance evaluation model of the environmentally-friendly substitute insulating gas6The feasibility of the gas, and the performance evaluation model of the environment-friendly insulating substitute gas is as follows:
k＝aEr+bGWP+cTb；
wherein k is a substitution performance evaluation quantization parameter, a, b and c are all weight coefficients, ErFor electrical strength, GWP is the potential for greenhouse effect, TbIs the liquefaction temperature.
7. The environment-friendly insulating substitute gas property evaluation device according to claim 6, further comprising:
a visual analysis module for establishing a three-dimensional stereogram of the target insulating substitute gas with respect to the electrical strength, the greenhouse effect potential and the liquefaction temperature, the three-dimensional stereogram being used for analyzing a visual analysis of the greenhouse effect potential.
8. An environment-friendly insulating substitute gas performance evaluation device, characterized in that the device comprises a processor and a memory:
the memory is used for storing program codes and transmitting the program codes to the processor;
the processor is used for executing the environment-friendly insulating substitute gas performance evaluation method according to any one of claims 1 to 5 according to instructions in the program code.
9. A computer-readable storage medium for storing a program code for executing the eco-friendly insulation substitute gas performance evaluation method according to any one of claims 1 to 5.
10. A computer program product comprising instructions which, when run on a computer, cause the computer to perform the environmentally friendly insulating substitute gas performance evaluation method of any one of claims 1-5.
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| 周文俊等: "环保型绝缘气体电气特性研究进展", 《高电压技术》 * |
| 陈庆国等: "基于密度泛函理论的SF_6潜在替代气体筛选", 《高电压技术》 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112147473A (en) * | 2020-09-28 | 2020-12-29 | 哈尔滨理工大学 | Screening method of high-insulation-strength gas |
| CN112162182A (en) * | 2020-09-28 | 2021-01-01 | 哈尔滨理工大学 | Gas dielectric strength prediction method based on neural network |
| CN113657015A (en) * | 2021-08-13 | 2021-11-16 | 湖北工业大学 | SF based on multilayer electrostatic potential parameter6Alternative gas selection method |
| CN113657015B (en) * | 2021-08-13 | 2023-12-05 | 湖北工业大学 | SF based on multilayer electrostatic potential parameters 6 Alternative gas selection method |
| CN113759081A (en) * | 2021-09-26 | 2021-12-07 | 湖北工业大学 | Method for evaluating compatibility of novel environment-friendly insulating gas and solid material in equipment |
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| CN111222219B (en) | 2023-01-13 |
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