Transformer substation zero-carbon construction site grading index system construction method

Abstract

The invention discloses a transformer substation zero-carbon construction site grading index system construction and method, and the method comprises the steps: firstly building a transformer substation engineering carbon emission calculation boundary, and taking the building material consumption in the construction quota of an engineering quantity list in a construction preparation stage, the machine team data and the like as the reference basis of the transformer substation engineering carbon emission calculation; a transformer substation zero-carbon construction site grading index system is divided into low-carbon, near-zero-carbon and zero-carbon levels according to transformer substation construction carbon emission, the zero-carbon construction site is used as the highest technical difficulty standard, and the grade of the transformer substation zero-carbon construction site grading index system is improved. The carbon emission control indexes of low-carbon and near-zero-carbon construction sites are divided, and the low-carbon level of the transformer substation is gradually improved, so that the requirements of energy infrastructure construction in China can be met, positive contributions can be made for achieving the national carbon emission reduction target, and the whole power industry is promoted to take a solid step towards green and low-carbon transformation.

Description

Technical Field

[0001] The present invention relates to the technical field of zero-carbon construction sites for substations, and in particular to a construction method and system for grading zero-carbon construction sites for substations. Background Art

[0002] Substation project construction is a key area for the green and low-carbon transformation of power grid infrastructure projects. Actively promoting the green and zero-carbon construction of substation projects can effectively alleviate the impact of traditional construction processes on the environment. The ecological and environmental impact of substation construction, especially its zero-carbon construction, has not yet been included in the national accounting and evaluation system. At present, there is no unified technical indicator for zero-carbon substation sites in China. Establishing zero-carbon site evaluation indicators that are in line with my country's national conditions and the actual situation of substation construction projects is the key to the construction and promotion of zero-carbon sites.

[0003] A Chinese patent discloses a carbon emission accounting method and system suitable for substation construction (authorization announcement number CN 117521972 A). This patented technology can list a more detailed accounting list based on carbon emission factors, taking into account the carbon emissions in the stages of material production, equipment production, material and equipment transportation, mechanical energy consumption, and personnel life energy consumption. It can achieve more accurate calculations of the substation construction process and improve the reliability of carbon emission calculations during the substation construction process. However, the results are not clear and the application in the substation is inconvenient. Therefore, the present invention provides a substation zero-carbon construction site classification index system and method to solve the problems raised in the above background technology. Summary of the invention

[0004] The purpose of the present invention is to provide a substation zero-carbon construction site classification index system construction and method to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A construction method and system for grading zero-carbon substation construction sites. The grading zero-carbon substation construction site index system is divided into three levels: low-carbon, near-zero-carbon, and zero-carbon according to the carbon emissions of substation construction. The zero-carbon construction site is used as the highest technical difficulty standard, and the carbon emission control indicators of low-carbon and near-zero-carbon construction sites are further divided. The carbon reduction rate of low-carbon substation construction sites must reach or exceed 30%; the carbon reduction rate of near-zero-carbon substation construction sites must reach or exceed 45%, and zero-carbon substation construction sites can adopt carbon offset measures. After carbon offset, the total carbon emissions of the substation site should not be greater than zero, and the carbon offset ratio shall not exceed 30%.

[0007] Preferably, the indicator control forms include overall carbon reduction rate, scores of various green and low-carbon technical measures, and dual control of overall carbon reduction rate and scores of various green and low-carbon technical measures. Overall carbon reduction rate = (carbon emission reduction / baseline carbon emissions) × 100%. Scores of various green and low-carbon technical measures are an analysis of carbon reduction technology for substation construction. Dual control of overall carbon reduction rate and scores of various green and low-carbon technical measures is achieved by combining the overall carbon reduction rate with the green carbon reduction measures score.

[0008] Preferably, the scoring of various green and low-carbon technical measures specifically includes low-carbon material selection, renewable energy utilization, energy saving of construction equipment and resource recycling.

[0009] Preferably, the low-carbon materials give priority to concrete and steel with low carbon footprint.

[0010] Preferably, the renewable energy utilization includes but is not limited to the utilization of solar energy, wind energy and geothermal energy.

[0011] Preferably, the energy saving of construction equipment includes selecting construction machinery and equipment with high energy efficiency ratings, rationally using and maintaining the equipment, rationally arranging the use time and workload of the construction equipment, and avoiding idling and excessive use of the equipment.

[0012] Preferably, the resource recycling includes the recycling of construction waste and water resources, etc., and a complete construction waste recycling system is established to recycle the construction waste generated during the substation construction, build a water resource recycling system at the construction site, and collect rainwater and construction wastewater.

[0013] A method for constructing a zero-carbon substation construction site grading index system first establishes the carbon emission calculation boundary of the substation project, and uses the building material consumption and unit-shift data in the construction quota of the bill of quantities in the construction preparation phase as the benchmark for calculating the carbon emissions of the substation project. Then, the green and low-carbon technical measures of the substation project are intuitively reflected through indicator control evaluation. Finally, the carbon reduction rate and carbon offset measures are evaluated to obtain the carbon reduction value for rating.

[0014] Preferably, the carbon emission calculation boundary of the substation project includes the carbon emissions generated by various energy consumption in construction activities, the carbon emissions during the transportation of building materials, and the carbon emissions generated in the production of building materials. The energy consumption of construction activities is the energy consumption of various construction machinery, tools and equipment used during the construction phase.

[0015] Preferably, carbon emissions during the substation construction phase should include: carbon emissions generated by fossil fuels, electricity, heat, etc. consumed during the construction of sub-projects and implementation of measures; and carbon emissions from the production and transportation of building materials consumed during the construction phase.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] In view of my country's national conditions and the particularity of substation projects, in order to promote the green and low-carbon development of substation projects in a more scientific and reasonable manner, the present invention divides the carbon emissions of substation construction into three levels: low carbon, near zero carbon, and zero carbon for target guidance. Under the premise of fully considering the technical feasibility, the difficulty of achieving goals of different levels is carefully divided. The purpose of this is to provide a clear and operational low-carbon development path for the construction of substation projects. By gradually improving the low-carbon level of substations, it can not only meet the needs of my country's energy infrastructure construction, but also make positive contributions to achieving the country's carbon reduction goals, and promote the entire power industry to take solid steps towards green and low-carbon transformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Schematic diagram of the construction of a zero-carbon site indicator system for substations.

[0019] Figure 2 Carbon emission intensity during the construction period of the six substations. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] See also Figures 1-2 In an embodiment of the present invention, a substation zero-carbon construction site grading index system is constructed and method is provided. The substation zero-carbon construction site grading index system is divided into three levels: low carbon, near zero carbon, and zero carbon according to the carbon emissions of substation construction. The zero-carbon construction site is used as the highest technical difficulty standard, and the carbon emission control indicators of low-carbon and near zero-carbon construction sites are further divided. The carbon reduction rate of low-carbon substation construction sites must reach or exceed 30%; the carbon reduction rate of near zero-carbon substation construction sites must reach or exceed 45%, and zero-carbon substation construction sites can adopt carbon offset measures. After carbon offset, the total carbon emissions of the substation site should not be greater than zero, and the carbon offset ratio shall not exceed 30%.

[0022] The indicator control forms include overall carbon reduction rate, scores of various green and low-carbon technical measures, and dual control of overall carbon reduction rate and scores of various green and low-carbon technical measures. Overall carbon reduction rate = (carbon emission reduction / baseline carbon emission) × 100%. The scores of various green and low-carbon technical measures are an analysis of carbon reduction technologies for substation construction, specifically including low-carbon material selection, renewable energy utilization, energy-saving construction equipment, and resource recycling. The low-carbon material selection gives priority to low-carbon footprint concrete, steel, etc. The renewable energy utilization includes but is not limited to the utilization of green energy such as solar energy, wind energy, and geothermal energy. The energy-saving construction equipment includes the selection of construction machinery and equipment with high energy efficiency levels, the reasonable use and maintenance of equipment, the reasonable arrangement of the use time and workload of construction equipment, and the avoidance of equipment idling and excessive use. The resource recycling includes the recycling of construction waste and the recycling of water resources. A complete construction waste recycling system is established to classify and recycle construction waste generated during the construction of the substation, such as discarded concrete blocks, bricks, steel, etc., and to build a water resource recycling system at the construction site to collect rainwater and construction wastewater (such as concrete maintenance wastewater, vehicle washing wastewater, etc.).

[0023] The dual control of the overall carbon reduction rate and the scores of various green and low-carbon technical measures is to more intuitively reflect the carbon emission level and carbon reduction potential of the substation project itself by combining the overall carbon reduction rate with the green carbon reduction measures. This can not only clearly understand the actual carbon emissions of the substation during the construction process, but also comprehensively evaluate the role of various green and low-carbon technologies in reducing carbon emissions, providing a strong basis for further optimizing the construction of substations, promoting the development of substations in a more low-carbon and environmentally friendly direction, and helping to achieve the goal of sustainable development.

[0024] A method for constructing a zero-carbon construction site grading index system for substations. Carbon emissions from substation construction is a multi-dimensional and comprehensive concept. First, the carbon emission calculation boundary of the substation project is established. The building material consumption and unit-shift data in the construction quota of the bill of quantities in the construction preparation phase are used as the benchmark for calculating the carbon emissions of the substation project. Then, the green and low-carbon technical measures of the substation project are intuitively reflected through indicator control. Finally, the carbon reduction rate and carbon offset measures are evaluated to obtain the carbon reduction value for rating.

[0025] The carbon emission calculation boundary of the substation project includes the carbon emissions generated by various energy consumption in construction activities, the carbon emissions in the transportation of building materials, and the carbon emissions generated in the production of building materials. The energy consumption of construction activities refers to the energy consumption of various construction machinery, tools and equipment used in the construction phase, which is mainly composed of two parts: one is the construction energy consumption of the sub-projects that constitute the engineering entity; the other is the energy consumption of various non-engineering entity measures in technology, life, safety and other aspects before and during the construction of the project to complete the construction of the project.

[0026] In order to calculate the carbon emissions during the construction of substation projects in detail and accurately, the carbon emissions during the substation construction phase should include: carbon emissions from fossil fuels, electricity and heat consumed during the construction of substation projects and implementation of measures (including the disposal and transportation of construction waste, operation of offices and living areas, etc.); and carbon emissions from the production and transportation of building materials consumed during the construction phase.

[0027] In the selection of building materials, new low-carbon and environmentally friendly materials may be used, and the carbon emissions in their production process are relatively low; in the use of construction equipment, energy-saving mechanical equipment may be selected to reduce energy consumption and thus reduce carbon emissions; in terms of construction technology, innovative low-carbon construction technology may also be adopted to reduce energy waste and carbon emissions during the construction process.

[0028] The working principle of the present invention is:

[0029] A method for constructing a grading index system for substation zero-carbon construction sites is to combine the control index of relative carbon reduction rate in the form of scoring evaluation, and finally evaluate the grades of low-carbon, near-zero-carbon and zero-carbon substations. Figure 1 shown.

[0030] Technical measures include control of embodied carbon in building materials, control of construction energy use, technical measures, environmental friendliness, construction management, carbon offsetting and other carbon reduction measures.

[0031] This paper calculates and analyzes the carbon emissions during the civil construction phase of three typical concrete substations and three typical steel structure substations in Shanghai. The carbon emission intensity during the construction phase of the six substations is as follows: Figure 2 The study found the following: (1) The average carbon emission intensity of a concrete station is 1089 kgCO 2 e / m 2 The average carbon emission intensity of the steel structure station is 1364kgCO 2 e / m 2 ,In general, the carbon emission intensity of the concrete station during the construction period is slightly lower than that of the steel structure station.

[0032] (2) Carbon emissions from building materials production account for about 90% of the total carbon emissions during the construction period. Selecting low-carbon building materials and optimizing the supply of building materials on the supply chain are the key to reducing carbon emissions during the substation construction period.

[0033] (3) When the total weight of building materials exceeds 95% of the total building materials usage, only 74% to 85% of carbon emissions can be covered. The high-carbon emission building materials that account for more than 90% of carbon emissions mainly include: concrete, steel bars, structural steel, bricks and blocks, mortar, aluminum alloys, pipes and fittings, iron products, PC, cement, paint and coatings, gypsum boards, rock wool boards, light steel keels, and stainless steel. These 15 types of building materials can be used as key control building materials during the substation construction period.

[0034] (4) The carbon emissions from pile-driving machinery, cranes, welders, concrete machinery, and excavators in the six substations accounted for a relatively high proportion; during the construction of substations, diesel carbon emissions (40%-66%) were generally higher than electricity carbon emissions (30%-54%), while the carbon emissions from gasoline, kerosene, coal, and petroleum gas accounted for a relatively low proportion.

[0035] This technical solution clarifies the basis for formulating the indicator system, defines the calculation boundary of carbon emissions for substation projects, studies the carbon emission characteristics of substations, and explores the potential for carbon reduction in construction, covering low-carbon material selection, renewable energy utilization, energy saving of construction equipment, and resource recycling. Then, this article explains the control form of the hierarchical indicator system, and constrains the carbon emissions of substations by combining the relative carbon reduction rate with the scoring of energy-saving and carbon reduction technical measures. Finally, a carbon emission indicator system for substation construction sites is constructed, stipulating that the difficulty of achieving indicators for low-carbon, near-zero-carbon, and zero-carbon substation construction sites increases, taking specific data as the benchmark, setting carbon reduction rate indicators with reference to standards, and comprehensively considering multiple factors to propose control measures and conduct grade assessments, aiming to promote the green and low-carbon development of substation projects and help achieve national carbon emission reduction goals.

[0036] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A substation zero-carbon construction site grading index system, including low-carbon, near-zero-carbon, and zero-carbon levels, characterized in that: Taking the zero-carbon construction site as the highest technical difficulty standard, the carbon emission control indicators of low-carbon and near-zero-carbon construction sites are further divided. The carbon reduction rate of low-carbon substation construction sites must reach or exceed 30%; the carbon reduction rate of near-zero-carbon substation construction sites must reach or exceed 45%. Zero-carbon substation sites adopt carbon offset measures. After carbon offset, the total carbon emissions of the substation site should not be greater than zero, and the carbon offset ratio shall not exceed 30%.

2. A substation zero-carbon construction site classification index system according to claim 1, characterized in that: The indicator control forms include overall carbon reduction rate, scores of various green and low-carbon technical measures, and dual control of overall carbon reduction rate and scores of various green and low-carbon technical measures. The overall carbon reduction rate = (carbon emissions reduction / baseline carbon emissions) × 100%. The scores of various green and low-carbon technical measures are an analysis of carbon reduction technologies in substation construction. The dual control of overall carbon reduction rate and scores of various green and low-carbon technical measures is achieved by combining the overall carbon reduction rate with the green carbon reduction measures scores.

3. A substation zero-carbon construction site classification index system according to claim 2, characterized in that: The scoring of various green and low-carbon technical measures specifically includes low-carbon material selection, renewable energy utilization, energy conservation of construction equipment and resource recycling.

4. A substation zero-carbon construction site classification index system according to claim 3, characterized in that: The low-carbon material selection gives priority to concrete and steel with low carbon footprint.

5. A substation zero-carbon construction site classification index system according to claim 3, characterized in that: The renewable energy utilization includes but is not limited to the utilization of solar energy, wind energy, and geothermal energy.

6. A substation zero-carbon construction site classification index system according to claim 3, characterized in that: The energy conservation of construction equipment includes selecting construction machinery and equipment with high energy efficiency ratings, rationally using and maintaining the equipment, rationally arranging the use time and workload of the construction equipment, and avoiding idling and excessive use of the equipment.

7. A substation zero-carbon construction site classification index system according to claim 3, characterized in that: The resource recycling includes the recycling of construction waste and water resources. A complete construction waste recycling system will be established to recycle the construction waste generated during the substation construction process, build a water resource recycling system at the construction site, and collect rainwater and construction wastewater.

8. A method for constructing a zero-carbon substation site classification index system, characterized in that: First, establish the carbon emission calculation boundary of the substation project, and use the building material consumption and unit-shift data in the construction quota of the bill of quantities in the construction preparation phase as the benchmark for calculating the carbon emissions of the substation project. Then, evaluate and intuitively reflect the green and low-carbon technical measures of the substation project through indicator control. Finally, evaluate the carbon reduction rate and carbon offset measures, derive the carbon reduction value, and conduct a rating.

9. A method for constructing a zero-carbon substation construction site classification index system according to claim 8, characterized in that: The carbon emission calculation boundary of the substation project includes the carbon emissions generated by various energy consumption in construction activities, the carbon emissions during the transportation of building materials, and the carbon emissions generated in the production of building materials. The energy consumption of construction activities refers to the energy consumption of various construction machinery, tools and equipment used during the construction phase.

10. A method for constructing a zero-carbon substation construction site classification index system according to claim 8, characterized in that: Carbon emissions during the substation construction phase include: carbon emissions from fossil fuels consumed in the construction of sub-projects and the implementation of measures and projects, and carbon emissions from electricity and heat generated; as well as carbon emissions from the production and transportation of building materials consumed during the construction phase.

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