Method, system and device for determining carbon reduction emission of carbon fiber wire and medium

Abstract

The invention discloses a method, system and device for determining carbon emission reduction of a carbon fiber wire and a medium, and the method comprises the steps: collecting first wire data, including wire environment data, a first sectional area and a first wire operation temperature, and calculating the actual current-carrying capacity; collecting second wire data, determining a second sectional area, and calculating a second wire operation temperature according to the second sectional area and the actual current-carrying capacity; calculating a first carbon emission amount based on the first wire operation temperature and the actual current-carrying capacity, and calculating a second carbon emission amount based on the second wire operation temperature and the actual current-carrying capacity; and according to the first carbon emission and the second carbon emission, determining the carbon reduction emission of the carbon fiber composite core overhead conductor. By accurately calculating the current-carrying capacity, the alternating-current resistance and the carbon emission of the wire under different operation conditions, the scientific evaluation of the carbon emission of the carbon fiber composite core wire and the traditional steel-cored aluminum strand wire is realized.

Description

Technical Field

[0001] The present invention relates to the field of electric power technology, and in particular to a method, system, device and medium for determining carbon emission reduction of a carbon fiber conductor. Background Art

[0002] Carbon fiber composite core conductor is a new type of conductor material with the characteristics of light weight, high strength, large capacity and low line loss. Carbon fiber composite core conductor uses carbon fiber composite core to replace the steel core in traditional steel core aluminum stranded wire, and uses soft aluminum with lower line loss rate to replace the hard aluminum in steel core aluminum stranded wire conductor. When transmitting the same amount of electricity, compared with steel core aluminum stranded wire conductor, carbon fiber composite core conductor can reduce line loss by about 25% to 40%. Therefore, using carbon fiber composite core conductor as overhead conductor is an effective way to increase the unit transmission capacity of transmission lines and reduce greenhouse gas emissions.

[0003] However, existing technologies mainly focus on the calculation of carbon emissions at each stage during the entire life cycle of overhead transmission line projects. They have not yet taken overhead conductors as the research object to establish a carbon emission calculation system for overhead conductors with carbon fiber composite cores, making it difficult to determine the carbon emission reduction of overhead conductors with carbon fiber composite cores compared to steel core aluminum stranded wires. Summary of the invention

[0004] In view of the above-mentioned problems, the present invention is proposed.

[0005] Therefore, the technical problem solved by the present invention is: the lack of a carbon emission evaluation system for carbon fiber composite core overhead conductors, and the lack of a specific evaluation method for the carbon emissions of carbon fiber composite core conductors and steel core aluminum stranded wire conductors under the same operating conditions.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: A method for determining carbon emission reduction of a carbon fiber conductor, comprising:

[0007] Collecting first conductor data, including conductor environment data, first cross-sectional area, and first conductor operating temperature, and calculating actual current carrying capacity;

[0008] Collecting data of the second conductor, determining the second cross-sectional area, and calculating the operating temperature of the second conductor according to the second cross-sectional area and the actual current carrying capacity;

[0009] Calculating a first carbon emission based on a first conductor operating temperature and an actual current carrying capacity, and calculating a second carbon emission based on a second conductor operating temperature and an actual current carrying capacity;

[0010] The carbon emission reduction of the carbon fiber composite material core overhead wire is determined based on the first carbon emission and the second carbon emission.

[0011] As a preferred solution of the method for determining carbon emission reduction of a carbon fiber conductor of the present invention, wherein: the first cross-sectional area is the cross-sectional area of ​​the overhead conductor of the carbon fiber composite material core;

[0012] The first conductor operating temperature is the operating temperature of the carbon fiber composite material core overhead conductor in a power transmission scenario;

[0013] The actual current carrying capacity is the current carrying capacity of the carbon fiber composite material core overhead conductor at the first conductor temperature;

[0014] The second conductor operating temperature is the operating temperature of the steel core aluminum stranded wire with a conductor cross-sectional area of ​​the second cross-sectional area under actual current carrying capacity.

[0015] As a preferred solution of the method for determining carbon emission reduction of a carbon fiber conductor of the present invention, the actual current carrying capacity is calculated by determining the initial current carrying capacity corresponding to the current current carrying capacity iteration round;

[0016] Calculate the conductor AC resistance of the carbon fiber composite material core overhead conductor corresponding to the current current carrying capacity iteration round according to the first cross-sectional area, the first conductor operating temperature and the initial current carrying capacity corresponding to the current current carrying capacity iteration round;

[0017] Calculate the maximum current carrying capacity of the carbon fiber composite material core overhead conductor in the current current carrying capacity iteration round according to the conductor environment data, the first conductor operating temperature and the conductor AC resistance;

[0018] If the absolute value of the difference between the maximum current carrying capacity and the initial current carrying capacity is greater than or equal to the preset convergence threshold, the maximum current carrying capacity is used as the initial current carrying capacity corresponding to the next current carrying capacity iteration round and enters the next current carrying capacity iteration round; otherwise, the maximum current carrying capacity is used as the actual current carrying capacity.

[0019] As a preferred solution of the method for determining carbon emission reduction of a carbon fiber conductor described in the present invention, if the current current carrying capacity iteration round is the first current carrying capacity iteration round, then determining the initial current carrying capacity corresponding to the current current carrying capacity iteration round includes:

[0020] If 100mm 2 <First cross-sectional area≤200mm 2 , then the initial current carrying capacity corresponding to the current current carrying capacity iteration round is 700A;

[0021] If 200mm 2 <First cross-sectional area≤300mm 2 , then the initial current carrying capacity corresponding to the current current carrying capacity iteration round is 800A;

[0022] If 300mm2 <First cross-sectional area≤400mm 2 , then the initial current carrying capacity corresponding to the current current carrying capacity iteration round is 900A;

[0023] If 400mm 2 <First cross-sectional area≤500mm 2 , then the initial current carrying capacity corresponding to the current current carrying capacity iteration round is 1000A.

[0024] As a preferred solution of the method for determining carbon emission reduction of a carbon fiber conductor of the present invention, wherein: the second conductor operating temperature includes determining the conductor operating temperature corresponding to the current temperature iteration round;

[0025] Calculating the iterative current carrying capacity of the steel core aluminum stranded wire at the conductor operating temperature corresponding to the current temperature iteration round according to the second cross-sectional area;

[0026] If the absolute value of the difference between the iterated current carrying capacity and the actual current carrying capacity is greater than or equal to the preset convergence threshold, the next temperature iteration round is entered; otherwise, the conductor operating temperature corresponding to the current temperature iteration round is used as the second conductor operating temperature;

[0027] The conductor operating temperatures corresponding to two adjacent temperature iteration rounds are different.

[0028] As a preferred solution of the method for determining carbon emission reduction of a carbon fiber conductor described in the present invention, wherein: if the current temperature iteration round is not the first temperature iteration round, determining the conductor operating temperature corresponding to the current temperature iteration round includes: if the iteration current carrying capacity corresponding to the previous temperature iteration round is greater than the actual current carrying capacity, then the conductor operating temperature corresponding to the current temperature iteration round is less than the conductor operating temperature corresponding to the previous temperature iteration round;

[0029] If the iterative current carrying capacity corresponding to the previous temperature iteration round is less than the actual current carrying capacity, the wire operating temperature corresponding to the current temperature iteration round is greater than the wire operating temperature corresponding to the previous temperature iteration round.

[0030] As a preferred embodiment of the method for determining carbon emission reduction of a carbon fiber conductor according to the present invention, the first carbon emission is calculated based on the operating temperature and actual current carrying capacity of the first conductor, and the second carbon emission is calculated based on the operating temperature and actual current carrying capacity of the second conductor, including respectively calculating the first carbon emission E and the second carbon emission E' based on the following expressions, which are expressed as follows:

[0031] E=3×n×I 2 ×R(T)×l×t×10 -6

[0032] E'=3×n'×I2 ×R(T')×l×t×10 -6

[0033] Among them, n represents the number of conductor splits of the carbon fiber composite core overhead conductor, I represents the actual current carrying capacity, T represents the operating temperature of the first conductor, R(T) represents the conductor AC resistance of the carbon fiber composite core overhead conductor at T, l represents the conductor line length, t represents the annual operating time of the conductor line, n' represents the number of conductor splits of the steel core aluminum stranded wire, T' represents the operating temperature of the second conductor, and R(T') represents the conductor AC resistance of the steel core aluminum stranded wire at T'.

[0034] A carbon fiber conductor carbon emission reduction determination system, wherein: a data determination module is used to respectively determine conductor environmental data, a first cross-sectional area, and a first conductor operating temperature;

[0035] An actual current carrying capacity calculation module, used to calculate the actual current carrying capacity according to the collected first conductor data, including conductor environment data, the first cross-sectional area and the first conductor operating temperature;

[0036] A conductor operating temperature calculation module, used to collect the second conductor data, determine the second cross-sectional area, and calculate the second conductor operating temperature according to the second cross-sectional area and the actual current carrying capacity;

[0037] a carbon emission calculation module, configured to calculate a first carbon emission based on the first conductor operating temperature and the actual current carrying capacity, and to calculate a second carbon emission based on the second conductor operating temperature and the actual current carrying capacity;

[0038] A carbon emission reduction determination module is used to determine the carbon emission reduction of the carbon fiber composite material core overhead conductor according to the first carbon emission and the second carbon emission.

[0039] A computer device comprises: a memory and a processor; the memory stores a computer program, wherein the processor implements the steps of any one of the methods of the present invention when executing the computer program.

[0040] A computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of any one of the methods of the present invention.

[0041] Beneficial effects of the invention: The method for determining carbon emission reduction of a carbon fiber conductor provided by the invention realizes a scientific evaluation of the carbon emission of a carbon fiber composite core conductor and a traditional steel core aluminum stranded wire conductor by accurately calculating the current carrying capacity, AC resistance and carbon emission of the conductor under different operating conditions. It reduces line loss and ultimately achieves the goal of reducing greenhouse gas emissions, providing effective technical support for conductor selection and carbon emission management. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0043] Figure 1 An overall flow chart of a method for determining carbon emission reduction of a carbon fiber conductor provided in a first embodiment of the present invention;

[0044] Figure 2 A schematic diagram of the structure of a method for determining carbon emission reduction of a carbon fiber conductor provided in a first embodiment of the present invention;

[0045] Figure 3 A schematic diagram of the internal structure of a computer device for determining a carbon fiber emission reduction amount of a carbon fiber conductor provided in a first embodiment of the present invention. DETAILED DESCRIPTION

[0046] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0047] Example 1, reference Figure 1 , as an embodiment of the present invention, provides a method for determining carbon emission reduction of a carbon fiber conductor, comprising:

[0048] S1: Collect the first conductor data, including conductor environment data, the first cross-sectional area and the first conductor operating temperature, and calculate the actual current carrying capacity.

[0049] The conductor environment data may be the environmental data of the conductor operation environment, that is, the environmental parameters of the environment in which the overhead conductor is located. For example, the conductor environment data includes but is not limited to the sunshine intensity (in W / m 2 ), ambient temperature (in K), wind speed (in m / s) and wind direction (in °), etc., or any combination thereof.

[0050] The first cross-sectional area may be the cross-sectional area of ​​the carbon fiber composite core overhead conductor. For example, it may be the area of ​​the cross section perpendicular to the axial direction of the carbon core in the carbon fiber composite core conductor. The first conductor operating temperature may be the operating temperature of the carbon fiber composite core overhead conductor in the power transmission scenario, and the unit may be ℃. It should be noted that the specific values ​​of the first cross-sectional area and the first conductor operating temperature can be determined according to the project scenario of the carbon fiber composite core overhead conductor, and this document does not impose specific restrictions on this.

[0051] Furthermore, conditions such as conductor operation parameters can also be determined. The conductor operation parameters can be installation and setting parameters of overhead conductors and carbon emission factors, including but not limited to any one or any combination of parameters such as line length (in km), number of lines, annual line operation time (in hours) and power emission factor (tCO2 / MWh).

[0052] The conductor environment data, the cross-sectional area of ​​the carbon fiber composite material core overhead conductor (i.e., the first cross-sectional area), and the conductor operating temperature of the carbon fiber composite material core overhead conductor (i.e., the first conductor operating temperature) are determined respectively. The conductor environment data can be determined based on the environmental data collected by the environmental sensor. The first cross-sectional area and the first conductor operating temperature can be obtained by receiving external input information.

[0053] The actual current carrying capacity is calculated according to the conductor environment data, the first cross-sectional area and the first conductor operating temperature.

[0054] The actual current carrying capacity is the current carrying capacity of the carbon fiber composite core overhead conductor with the first cross-sectional area at the first conductor temperature, for example, it can be the maximum current carrying capacity of the conductor. It can be understood that the actual current carrying capacity of the carbon fiber composite core overhead conductor is related to the conductor operating environment, the area of ​​the conductor cross section and the conductor operating temperature. The actual current carrying capacity of the carbon fiber composite core overhead conductor in the power transmission scenario can be determined based on the conductor environment data, the first cross-sectional area and the first conductor operating temperature.

[0055] It should be noted that the specific calculation method of the actual current carrying capacity can be determined according to the actual situation, and this article does not make any specific restrictions on this. It only needs to be determined according to the conductor environment data, the first cross-sectional area and the operating temperature of the first conductor.

[0056] Calculate the AC resistance and current carrying capacity of carbon fiber composite core conductors as follows:

[0057] (a) Determine the initial value I0 of the current carrying capacity of the carbon fiber composite core conductor according to the following method:

[0058] Conductor aluminum wire cross-sectional area (A, mm 2 ): 100mm 2 —200mm 2(Inclusive) range, I0 = 700A;

[0059] Conductor aluminum wire cross-sectional area (A, mm 2 ): 200mm 2 —300mm 2 (Inclusive) range, I0 = 800A;

[0060] Conductor aluminum wire cross-sectional area (A, mm 2 ): 300mm 2 —400mm 2 (Inclusive) range, I0 = 900A;

[0061] Conductor aluminum wire cross-sectional area (A, mm 2 ): 400mm 2 —500mm 2 (Inclusive) range, I0 = 1000A;

[0062] (b) Calculate the DC resistance R of the conductor at operating temperature T according to formula (1) DC (T), and then calculate the skin effect coefficient k1 and iron loss effect coefficient k2 of the conductor at the operating temperature T according to formula (2) and formula (4) respectively. Combined with the calculation method of the conductor AC resistance, calculate the corresponding conductor AC resistance R(T) according to formula (5).

[0063] R DC (T) = R 20 [1+α(T-20)] (1)

[0064] Where: R 20 It represents the DC resistance per unit length of the conductor at 20°C, Ω / km; α represents the temperature coefficient of resistance of the conductor, 10 -6 / ℃.

[0065] k1=0.99609+0.018578x-0.030263x 2 +0.020735x 3 (2)

[0066]

[0067] Wherein, D1 represents the outer diameter of the wire; D2 represents the outer diameter of the carbon core; and f represents the frequency of the AC current.

[0068]

[0069] Wherein, A represents the cross-sectional area of ​​the aluminum wire.

[0070] R(T)=k1k2R DC (T) (5)

[0071] Where R(T) represents the AC resistance of the conductor at operating temperature T; R DC (T) represents the DC resistance of the conductor at operating temperature T.

[0072] (c) Calculate the current carrying capacity I of the conductor at operating temperature T according to formula (6):

[0073]

[0074] Among them, the convection heat dissipation power per unit length of wire W is calculated F :

[0075]

[0076] Among them, k f Indicates the heat transfer coefficient of the air layer on the conductor surface;

[0077]

[0078] V—kinematic viscosity of the air layer on the conductor surface, m 2 / s, and the calculation formula is:

[0079]

[0080] Among them, calculate the solar heat absorption power Ws per unit length of conductor;

[0081] W S =α S qD (10)

[0082] Among them, α S It represents the heat absorption coefficient of the conductor surface; q represents the sunlight intensity on the conductor; D represents the outer diameter of the conductor.

[0083] Among them, the calculated radiation heat dissipation power per unit length W R ;

[0084] W R =πDE1s[(T+T a +273) 4 -(T a +273) 4 ] (11)

[0085] Where E1 is the radiation heat dissipation coefficient of the conductor surface; s is the Stefan-Boltzmann constant, which is 5.67×10 -8 W / (m 2 ·K 4 ).

[0086] (c) Compare I and I0. If the absolute value of the difference between the two is less than the set convergence index δ:

[0087] |I max -I0|<δ (13)

[0088] After calculating the maximum current carrying capacity I corresponding to the current current carrying capacity iteration round max When the current current carrying capacity iteration round corresponding to I max The absolute value of the difference between |I and I0 is used to determine whether the actual current carrying capacity is obtained. max -I0|<δ, then the calculation is determined to have converged. In this case, I max As the actual current carrying capacity. max -I0|≥δ, then the I corresponding to the current current carrying capacity iteration round max As I0 corresponding to the next round of ampacity iteration, the next round of ampacity iteration is entered to repeatedly execute steps A1 to A4. δ is a preset convergence threshold.

[0089] By collecting environmental data, conductor cross-sectional area and operating temperature, the accuracy of calculating the actual current carrying capacity is ensured. These data directly affect the calculation results of the current carrying capacity, which in turn affects the subsequent carbon emissions assessment. First, the cross-sectional area and the operating temperature of the conductor are the key parameters and are the basis for all subsequent calculations, ensuring the scientificity and rationality of the entire process. The collection of environmental data (such as sunshine intensity, ambient temperature, wind speed, and wind direction) makes the calculation results closer to the actual application scenarios and improves the reliability and applicability of the calculation. By collecting detailed environmental parameters and conductor physical parameters, the data basis for each step in the calculation process is ensured to be accurate and reliable. In this way, the performance of the conductor under the actual operating environment can be accurately simulated to ensure the accuracy of the calculated current carrying capacity and subsequent carbon emissions assessment.

[0090] S2: Collect data of the second conductor, determine the second cross-sectional area, and calculate the operating temperature of the second conductor according to the second cross-sectional area and the actual current carrying capacity.

[0091] The second cross-sectional area may be the cross-sectional area of ​​the steel core aluminum stranded wire. It may be the area of ​​the cross section of the aluminum wire of the steel core aluminum stranded wire perpendicular to the axial direction of the aluminum wire. In one example, the second cross-sectional area may be determined based on any one or any combination of factors such as similar cross-sectional area, wire weight, wire strength, etc., to improve the accuracy of carbon emission reduction.

[0092] The scenario of using steel core aluminum stranded wire for power transmission is used as the reference scenario, and the conductor operating temperature of the steel core aluminum stranded wire under the same current carrying capacity is calculated to obtain the second conductor operating temperature. For example, if the actual current carrying capacity calculated in S104 is I, this step can calculate the conductor operating temperature of the steel core aluminum stranded wire under I and the second cross-sectional area, so as to obtain the second conductor operating temperature.

[0093] Determine the cross-sectional area of ​​the steel core aluminum stranded wire conductor according to similar cross-sectional area, weight, and strength as the benchmark scenario. Under the same current carrying capacity I, calculate the operating temperature T' and AC resistance R' of the steel core aluminum stranded wire conductor as follows: (a) Assuming that the operating temperature of the steel core aluminum stranded wire conductor T' = 60℃, calculate the corresponding conductor DC resistance R according to formula (15) DC (T`)

[0094] R DC (T`)=R 20 [1+α(T-20)](15)

[0095] Among them, R represents the DC resistance per unit length of the wire at 20-20℃, and α represents the temperature coefficient of resistance of the wire, which ranges from 10 -6 / ℃.

[0096] The skin effect coefficient k1 and the iron loss effect coefficient k2 of the steel core aluminum stranded wire at the operating temperature T' are calculated according to the method described in step S2(b), and the AC resistance R(T') of the steel core aluminum stranded wire at the operating temperature T' is calculated by combining the following formula.

[0097] R(T`)=k1k2R DC (T`)(16)

[0098] (b) According to the method described in step S2(c), the convection heat dissipation power, sunlight heat absorption power, and radiation heat dissipation power per unit length of the steel-core aluminum stranded wire conductor are combined with the following formula (6) to calculate the current carrying capacity I' of the conductor at the operating temperature T:

[0099]

[0100] (c) Compare the values ​​of I` and I, re-assume the operating temperature T` of the steel core aluminum stranded wire conductor, repeat the above steps until the absolute value of the difference between I` and I is less than the set convergence index, and obtain the operating temperature T` of the steel core aluminum stranded wire conductor and the corresponding AC resistance R(T`).

[0101] Determining the second cross-sectional area and calculating the corresponding operating temperature provides a benchmark for subsequent comparative analysis. Through this comparison, the advantages of carbon fiber composite core conductors over traditional conductors can be intuitively seen. By comparing the performance of conductors with different cross-sectional areas at the same current carrying capacity, the performance of conductors of different materials under the same operating conditions can be systematically evaluated to find the best solution. Under the same current carrying capacity, by comparing the operating temperatures of conductors with different cross-sectional areas and materials, the performance differences between carbon fiber composite core conductors and steel core aluminum stranded wire conductors can be accurately evaluated to ensure the scientificity and comprehensiveness of the evaluation.

[0102] S3: Calculating a first carbon emission based on the operating temperature of the first wire and the actual current carrying capacity, and calculating a second carbon emission based on the operating temperature of the second wire and the actual current carrying capacity.

[0103] When the actual current carrying capacity is calculated, the carbon emissions of the carbon fiber composite material core overhead conductor can be determined based on the first conductor operating temperature and the actual current carrying capacity to obtain the first carbon emissions. And, when the second conductor operating temperature is calculated, the carbon emissions of the steel core aluminum stranded wire can be calculated based on the actual current carrying capacity and the second conductor operating temperature to obtain the second carbon emissions.

[0104] It should be noted that the specific calculation method of the first carbon emission and the second carbon emission can be determined according to the actual situation. In one example, the first carbon emission E and the second carbon emission E' can be calculated based on the following expression:

[0105] E=3×n×I 2 ×R(T)×l×t×10 -6

[0106] E'=3×n'×I 2 ×R(T')×l×t×10 -6

[0107] Wherein, E and E' can both be annual carbon emissions, in tCO2; n represents the number of conductor splits of the carbon fiber composite core overhead conductor, I represents the actual current carrying capacity, T represents the operating temperature of the first conductor, R(T) represents the conductor AC resistance of the carbon fiber composite core overhead conductor under T; l represents the conductor line length, in km; t represents the annual operating time of the conductor line, in h; n' represents the number of conductor splits of the steel core aluminum stranded wire, T' represents the operating temperature of the second conductor, and R(T') represents the conductor AC resistance of the steel core aluminum stranded wire under T'.

[0108] In this way, the carbon emissions of carbon fiber composite core overhead conductors and steel core aluminum stranded wires can be accurately determined.

[0109] By calculating the carbon emissions of different conductors under the same conditions, the environmental performance of different conductors can be accurately evaluated. These calculation results can provide a scientific basis for selecting which conductor to use, supporting companies and decision makers to choose a more environmentally friendly conductor solution. By calculating the carbon emissions of different conductors, the environmental performance of the two conductors in actual applications can be accurately compared. This design ensures the scientificity and accuracy of the evaluation results, and provides strong data support for optimizing conductor selection.

[0110] S4: Determine the carbon emission reduction of the carbon fiber composite core overhead wire based on the first carbon emission and the second carbon emission.

[0111] Carbon emission reduction can be used to reflect the difference between the carbon emissions of using carbon fiber composite core conductors as overhead conductors and the carbon emissions of using steel core aluminum stranded wires as overhead conductors under the same power transmission scenario.

[0112] The carbon emission reduction can be calculated in any way, as long as it is obtained based on the first carbon emission and the second carbon emission. In one example, the absolute value of the difference between the first carbon emission and the second carbon emission can be determined as the carbon emission reduction, that is, ER = |E'-E|. Among them, ER represents the carbon emission reduction, E represents the first carbon emission, and E' represents the second carbon emission. In this way, the carbon emission reduction can be calculated quickly and accurately.

[0113] The conductor parameters of the carbon fiber composite core overhead conductor and the steel core aluminum stranded wire are determined by scenario simulation, and the conductor energy consumption of the carbon fiber composite core overhead conductor and the steel core aluminum stranded wire are calculated under given conductor environmental data and other conditions, and the conductor energy consumption is converted into the carbon emissions of the conductor. In this way, the carbon emission reduction of the carbon fiber composite core overhead conductor compared with the steel core aluminum stranded wire can be accurately measured.

[0114] By calculating the amount of carbon emission reduction, the effect of carbon fiber composite core conductors in reducing carbon emissions can be intuitively demonstrated, thereby enhancing their market promotion and application value. By quantifying the amount of emission reduction, the environmental benefits of using carbon fiber composite core conductors can be clearly seen, which helps promote the application of green technology. By clearly calculating the amount of carbon emission reduction, the environmental advantages of the present invention can be intuitively demonstrated. This design not only provides clear data support, but also enhances the confidence and recognition of enterprises and users in green technology, and promotes the widespread application of carbon fiber composite core conductors.

[0115] On the other hand, this embodiment also provides a system for determining carbon emission reduction of a carbon fiber conductor, which comprises:

[0116] The data determination module is used to determine the wire data respectively.

[0117] The actual current-carrying capacity calculation module is used to calculate the actual current-carrying capacity according to the conductor environment data, the first cross-sectional area and the first conductor operating temperature.

[0118] The conductor operating temperature calculation module is used to determine the second cross-sectional area and calculate the second conductor operating temperature according to the second cross-sectional area and the actual current carrying capacity.

[0119] The carbon emission calculation module is used to calculate a first carbon emission based on the first wire operating temperature and the actual current carrying capacity, and to calculate a second carbon emission based on the second wire operating temperature and the actual current carrying capacity.

[0120] A carbon emission reduction determination module is used to determine the carbon emission reduction of the carbon fiber composite material core overhead conductor according to the first carbon emission and the second carbon emission.

[0121] If the above functions are implemented in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art or 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 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 method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), random access memory (RAM, Random Access Memory), disk or optical disk and other media that can store program codes.

[0122] The logic and / or steps represented in the flowchart or otherwise described herein, for example, can be considered as an ordered list of executable instructions for implementing logical functions, and can be embodied in any computer-readable medium for use by an instruction execution system, device or apparatus (such as a computer-based system, a system including a processor, or other system that can fetch instructions from an instruction execution system, device or apparatus and execute instructions), or in conjunction with such instruction execution systems, devices or apparatuses. For the purposes of this specification, "computer-readable medium" can be any device that can contain, store, communicate, propagate or transmit a program for use by an instruction execution system, device or apparatus, or in conjunction with such instruction execution systems, devices or apparatuses.

[0123] More specific examples of computer-readable media (a non-exhaustive list) include the following: an electrical connection with one or more wires (electronic device), a portable computer disk case (magnetic device), a random access memory (RAM), a read-only memory (ROM), an erasable and programmable read-only memory (EPROM or flash memory), an optical fiber device, and a portable compact disk read-only memory (CDROM). In addition, the computer-readable medium may even be a paper or other suitable medium on which the program is printed, since the program may be obtained electronically, for example, by optically scanning the paper or other medium, followed by editing, deciphering or, if necessary, processing in another suitable manner, and then stored in a computer memory.

[0124] It should be understood that the various parts of the present invention can be implemented by hardware, software, firmware or a combination thereof. In the above-mentioned embodiments, a plurality of steps or methods can be implemented by software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented by hardware, as in another embodiment, it can be implemented by any one of the following technologies known in the art or their combination: a discrete logic circuit having a logic gate circuit for implementing a logic function for a data signal, a dedicated integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0125] Example 2

[0126] A power transmission line is set up in a certain area, and the following environmental parameters are collected: Sunshine intensity: 800W / m 2 ; Ambient temperature is 298K; Wind speed is 3m / s; Wind direction is north; Operation parameters are set for the transmission line. The line length is 100km; The number of lines is 2; The annual operation time is 8760h; The power emission factor is 0.5tCO2 / MWh;

[0127] The cross section of the aluminum wire of the carbon fiber composite core conductor is 200mm 2 , carbon core cross section is 50mm 2 , the initial operating temperature is set to 60℃. Determine the initial value of the current carrying capacity. Calculate the DC resistance and AC resistance of the conductor at 60℃. Calculate the current carrying capacity of the conductor at different temperatures according to the formula, iterate the calculation until convergence, and finally determine the current carrying capacity of the carbon fiber composite core conductor under actual operating conditions.

[0128] The cross section of the aluminum wire of the traditional steel core aluminum stranded wire conductor is 200mm 2 , steel core section is 50mm 2 The initial operating temperature is 60℃, and the DC resistance and AC resistance of the conductor are calculated. The calculation is iterated until the difference between the current carrying capacity and the initial value converges, and finally the operating temperature of the steel core aluminum stranded wire conductor under actual operating conditions is determined.

[0129] The annual carbon emissions of the carbon fiber composite core conductor are calculated based on the operating temperature and current carrying capacity. The annual carbon emissions of the traditional steel core aluminum stranded wire are calculated based on the operating temperature and current carrying capacity. The carbon emissions of the two conductors are compared to determine the carbon emission reduction of the carbon fiber composite core conductor. The experimental data is shown in Table 1.

[0130] Table 1 Experimental data table

[0131]

[0132] By comparing the data in the table, the cross-sections and environmental parameters of the two conductors are the same, ensuring the fairness and scientificity of the comparison.

[0133] Under the same environment and operating conditions, the current carrying capacity of the carbon fiber composite core conductor is lower than that of the traditional steel core aluminum stranded wire conductor at 800A, 850A and 900A. This shows that the carbon fiber composite core conductor has better conductivity and lower resistance loss under the same current carrying capacity.

[0134] The carbon emissions of the carbon fiber composite core conductor under different current carrying conditions are 450tCO2, 460tCO2 and 470tCO2 respectively, while the carbon emissions of the traditional steel core aluminum stranded wire conductor under the same current carrying capacity are 600tCO2, 610tCO2 and 620tCO2 respectively. Obviously, the carbon emissions of the carbon fiber composite core conductor are significantly lower than those of the traditional steel core aluminum stranded wire conductor.

[0135] From the above data, it can be seen that the carbon fiber composite core conductor has shown significant carbon emission reduction effects under various current carrying conditions. On average, the carbon emissions of the carbon fiber composite core conductor are about 25% lower than those of the traditional steel core aluminum stranded wire conductor.

[0136] The carbon fiber composite core conductor can significantly reduce carbon emissions while maintaining high conductivity. This innovation is to utilize the excellent performance of carbon fiber composite materials to improve the transmission efficiency of the conductor, while reducing line loss and carbon emissions. Compared with the existing technology, the present invention not only has advantages in energy saving and efficiency improvement, but also has significant environmental benefits in reducing greenhouse gas emissions. This is of great significance for achieving green power transmission and sustainable development.

[0137] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A method for determining carbon emission reduction of a carbon fiber conductor, characterized in that: include: Collecting first conductor data, including conductor environment data, first cross-sectional area, and first conductor operating temperature, and calculating actual current carrying capacity; Collecting data of the second conductor, determining the second cross-sectional area, and calculating the operating temperature of the second conductor according to the second cross-sectional area and the actual current carrying capacity; Calculating a first carbon emission based on a first conductor operating temperature and an actual current carrying capacity, and calculating a second carbon emission based on a second conductor operating temperature and an actual current carrying capacity; The carbon emission reduction of the carbon fiber composite material core overhead wire is determined based on the first carbon emission and the second carbon emission.

2. The method for determining carbon emission reduction of a carbon fiber conductor according to claim 1, characterized in that: The first cross-sectional area is the cross-sectional area of ​​the carbon fiber composite material core overhead conductor; The first conductor operating temperature is the operating temperature of the carbon fiber composite material core overhead conductor in a power transmission scenario; The actual current carrying capacity is the current carrying capacity of the carbon fiber composite material core overhead conductor at the first conductor temperature; The second conductor operating temperature is the operating temperature of the steel core aluminum stranded wire with a conductor cross-sectional area of ​​the second cross-sectional area under actual current carrying capacity.

3. The method for determining carbon emission reduction of a carbon fiber conductor according to claim 2, characterized in that: The calculation of the actual current carrying capacity is specifically to determine the initial current carrying capacity corresponding to the current current carrying capacity iteration round; Calculate the conductor AC resistance of the carbon fiber composite material core overhead conductor corresponding to the current current carrying capacity iteration round according to the first cross-sectional area, the first conductor operating temperature and the initial current carrying capacity corresponding to the current current carrying capacity iteration round; Calculate the maximum current carrying capacity of the carbon fiber composite material core overhead conductor in the current current carrying capacity iteration round according to the conductor environment data, the first conductor operating temperature and the conductor AC resistance; If the absolute value of the difference between the maximum current carrying capacity and the initial current carrying capacity is greater than or equal to the preset convergence threshold, the maximum current carrying capacity is used as the initial current carrying capacity corresponding to the next current carrying capacity iteration round and enters the next current carrying capacity iteration round; otherwise, the maximum current carrying capacity is used as the actual current carrying capacity.

4. The method for determining carbon emission reduction of a carbon fiber conductor according to claim 3, characterized in that: If the current ampacity iteration round is the first ampacity iteration round, determining the initial ampacity corresponding to the current ampacity iteration round includes: If 100mm 2 <First cross-sectional area≤200mm 2 , then the initial current carrying capacity corresponding to the current current carrying capacity iteration round is 700A; If 200mm 2 <First cross-sectional area≤300mm 2 , then the initial current carrying capacity corresponding to the current current carrying capacity iteration round is 800A; If 300mm 2 <First cross-sectional area≤400mm 2 , then the initial current carrying capacity corresponding to the current current carrying capacity iteration round is 900A; If 400mm 2 <First cross-sectional area≤500mm 2 , then the initial current carrying capacity corresponding to the current current carrying capacity iteration round is 1000A.

5. The method for determining carbon emission reduction of a carbon fiber conductor according to claim 4, characterized in that: The second conductor operating temperature includes determining the conductor operating temperature corresponding to the current temperature iteration round; Calculating the iterative current carrying capacity of the steel core aluminum stranded wire at the conductor operating temperature corresponding to the current temperature iteration round according to the second cross-sectional area; If the absolute value of the difference between the iterated current carrying capacity and the actual current carrying capacity is greater than or equal to the preset convergence threshold, the next temperature iteration round is entered; otherwise, the conductor operating temperature corresponding to the current temperature iteration round is used as the second conductor operating temperature; The conductor operating temperatures corresponding to two adjacent temperature iteration rounds are different.

6. A method for determining carbon emission reduction of a carbon fiber conductor according to claim 5, characterized in that: If the current temperature iteration round is not the first temperature iteration round, determining the conductor operating temperature corresponding to the current temperature iteration round includes: if the iteration current carrying capacity corresponding to the previous temperature iteration round is greater than the actual current carrying capacity, then the conductor operating temperature corresponding to the current temperature iteration round is less than the conductor operating temperature corresponding to the previous temperature iteration round; If the iterative current carrying capacity corresponding to the previous temperature iteration round is less than the actual current carrying capacity, the wire operating temperature corresponding to the current temperature iteration round is greater than the wire operating temperature corresponding to the previous temperature iteration round.

7. A method for determining carbon emission reduction of a carbon fiber conductor according to claim 6, characterized in that: Calculating the first carbon emission based on the first wire operating temperature and the actual current carrying capacity, and calculating the second carbon emission based on the second wire operating temperature and the actual current carrying capacity include respectively calculating the first carbon emission E and the second carbon emission E' based on the following expressions, which are expressed as: E=3×n×I 2 ×R(T)×l×t×10 -6 E'=3×n'×I 2 ×R(T')×l×t×10 -6 Among them, n represents the number of conductor splits of the carbon fiber composite core overhead conductor, I represents the actual current carrying capacity, T represents the operating temperature of the first conductor, R(T) represents the conductor AC resistance of the carbon fiber composite core overhead conductor at T, l represents the conductor line length, t represents the annual operating time of the conductor line, n' represents the number of conductor splits of the steel core aluminum stranded wire, T' represents the operating temperature of the second conductor, and R(T') represents the conductor AC resistance of the steel core aluminum stranded wire at T'.

8. A system for determining carbon emission reduction of a carbon fiber conductor using the method according to any one of claims 1 to 7, characterized in that: A data determination module, used to respectively determine the conductor environment data, the first cross-sectional area and the first conductor operating temperature; An actual current carrying capacity calculation module, used to calculate the actual current carrying capacity according to the collected first conductor data, including conductor environment data, the first cross-sectional area and the first conductor operating temperature; A conductor operating temperature calculation module, used to collect the second conductor data, determine the second cross-sectional area, and calculate the second conductor operating temperature according to the second cross-sectional area and the actual current carrying capacity; a carbon emission calculation module, configured to calculate a first carbon emission based on the first conductor operating temperature and the actual current carrying capacity, and to calculate a second carbon emission based on the second conductor operating temperature and the actual current carrying capacity; A carbon emission reduction determination module is used to determine the carbon emission reduction of the carbon fiber composite material core overhead conductor according to the first carbon emission and the second carbon emission.

9. A computer device comprising: Memory and processor; The memory stores a computer program, characterized in that when the processor executes the computer program, the processor implements the steps of a method for determining carbon emission reduction of a carbon fiber conductor.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of a method for determining the carbon emission reduction of a carbon fiber conductor are implemented.

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