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Process Data set: Substation Construction and Operation ; Semi-Underground Substations (en) en zh

Key Data Set Information
Location SJZ-HEB-CN
Geographical representativeness description The author stated in the article that the substation was located in a cold region without giving a specific geographic location, using the geographic location of the author's grid company as the geographic location of the substation
Reference year 2023
Name
Substation Construction and Operation ; Semi-Underground Substations
Use advice for data set Data set users must consider the specific geographical and climatic conditions of cold regions when interpreting the carbon emission data. The starting point for the data set usage is the publication time of the literature source, and the data is applicable over the substation's 50-year lifespan. The bill of quantities, construction drawings, and carbon emission factors for material production and transportation should be referenced for accurate carbon footprint calculation. It's important to apply the correct grid emission factors, which are influenced by policies such as the 'Notice on Doing a Good Job on the Management of Greenhouse Gas Emission Reporting for Enterprises in the Power Generation Industry in 2023-2025'.
Technical purpose of product or process The semi-underground substation, designed for use in cold regions, facilitates the distribution and transformation of electrical power. It consists of one underground level and two to three above-ground floors, using reinforced concrete and steel frame structures. This infrastructure serves to manage and regulate the electrical power flow in the grid, ensuring continuous and reliable electricity supply.
Classification
Class name : Hierarchy level
  • ILCD: Unit processes / Systems / Construction
General comment on data set The literature has derived the carbon footprint of the semi-underground substation building at each stage of its life cycle, including the physicalization stage, operation stage, and construction and dismantling stage, through the establishment of a whole life cycle carbon emission model. The physical phase includes the production and transportation of building materials.
Copyright No
Owner of data set
Quantitative reference
Reference flow(s)
Time representativeness
Data set valid until 2073
Time representativeness description The literature does not specify the starting time of the dataset, so the time of publication of the literature is used as the starting time of the dataset, and the building life of the substation is 50 years, so 50 years is used as the valid time period
Technological representativeness
Technology description including background system Construction stage: The semi-underground substation is located in a cold area, with one underground floor, two floors above ground and three floors locally. It adopts reinforced concrete frame structure for the first floor and below, and steel frame structure for the first floor and above. The height of the building is 17.9m. The total floor area is 8402.6m2, and the total floor area above ground is 4982.6m2. Operation phase: In the substation, a large amount of residual heat is generated by the equipment in the main transformer room, distribution room, reactor room, capacitor room, cable layer, etc., and fans are needed to dissipate the heat, so as to ensure that the indoor temperature stays below 40°C. The substation is located in a cold area, and the building has 1 underground floor and 2 above ground floors.
Flow diagram(s) or picture(s)
  • HhDZbmpM4osMqUx5KLBcm2ALn2g.png Image
LCI method and allocation
Type of data set Partly terminated system
Deviation from LCI method principle / explanations None
Deviation from modelling constants / explanations None
Data sources, treatment and representativeness
Deviation from data cut-off and completeness principles / explanations None
Data selection and combination principles Based on the bill of quantities and combined with the building construction drawings to determine the consumption of major building materials. Determination of carbon emission factor: Based on the literature to derive the carbon emission factor of major building materials and its transportation carbon emission factor, the grid emission factor in the operation stage is selected, such as the "Notice on Doing a Good Job on the Management of Greenhouse Gas Emission Reporting for Enterprises in the Power Generation Industry in 2023-2025".
Deviation from data selection and combination principles / explanations None
Deviation from data treatment and extrapolations principles / explanations None
Data source(s) used for this data set
Completeness
Completeness of product model No statement
Validation
Type of review
Dependent internal review
Reviewer name and institution
Data generator
Data set generator / modeller
Data entry by
Time stamp (last saved) 2023-12-21T13:50:59+08:00
Publication and ownership
UUID 9fa69609-b6f2-4522-a611-2ae5f4b02ed8
Date of last revision 2024-04-20T14:48:59.083135+08:00
Data set version 00.01.005
Permanent data set URI https://lcadata.tiangong.world/showProcess.xhtml?uuid=9fa69609-b6f2-4522-a611-2ae5f4b02ed8&version=01.00.000&stock=TianGong
Owner of data set
Copyright No
License type Free of charge for all users and uses

Inputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Product flow Systems / Construction 1.42896E7 kg1.42896E7 kg
Product flow Materials production / Metals and semimetals 526950.0 kg526950.0 kg
Product flow
Materials production / Metals and semimetals 49710.0 kg49710.0 kg
General comment Section steel
Product flow
Materials production / Other materials 74570.0 kg74570.0 kg
General comment Steel-concrete precast floor slab
Product flow
Systems / Construction 2087909.9999999998 m22087909.9999999998 m2
General comment Steel-concrete prefabricated wall panels, the detailed information cannot be found in da.tiangong.world, and the existing flow will be used instead.
Product flow Materials production / Other mineralic materials 447410.0 kg447410.0 kg
Product flow
Materials production / Other materials 1332280.0 kg1332280.0 kg
General comment The original flow name is ready-mixed mortar. Select the existing mortar in the flow data table as the flow name.
Elementary flow Resources / Resources from ground / Non-renewable material resources from ground 1447620.0 kg1447620.0 kg
Product flow
Systems / Construction 894820.0 kg894820.0 kg
General comment The original stream name is block, and the detailed type is not given. It is replaced by the lightweight concrete block already in the stream data table.
Product flow Materials production / Raw materials 1383980.0 kg1383980.0 kg
Product flow Materials production / Other materials 11020.0 kg11020.0 kg
Product flow
Materials production / Wood 1870.0 Item(s)1870.0 Item(s)
General comment The stream name in the original data is insulation door. This detailed information cannot be found in da.tiangong.world, so the existing stream is used instead.
Product flow Materials production / Glass and ceramics 78450.0 kg78450.0 kg
Product flow Systems / Paints and chemical preparations 49710.0 kg49710.0 kg
Product flow Use and consumption / Consumption of goods 1310.0 kg1310.0 kg
Product flow
Materials production / Metals and semimetals 2780.0 kg2780.0 kg
General comment The original data flow name is pipe, which is not clearly stated. It is replaced by the input flow of welded steel pipe in the flow data table.

Outputs

Type of flow Classification Flow Location Mean amount Resulting amount Minimum amount Maximum amount
Product flow
Systems / Electrics and electronics 1.0 Item(s)1.0 Item(s)
General comment 半地下变电站
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 3.2724299E7 kg3.2724299E7 kg
General comment The carbon footprint of the substation operation phase is recorded based on a 50-year lifespan. The source of carbon emissions during the substation building operation phase mainly comes from electric energy, mainly involving building cooling, heating, lighting, and fan equipment. According to experts, this is carbon dioxide (fossil).
Elementary flow
Emissions / Emissions to air / Emissions to air, unspecified 83858.0 kg83858.0 kg
General comment Carbon footprint during construction and dismantling of substations. According to experts, this is carbon dioxide (fossil).