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<p>The substation plays a critical role in the construction of new power systems, and effective carbon emission accounting and monitoring are prerequisites for power carbon emissions reduction. The model for accounting the carbon emissions throughout the lifecycle of a substation is proposed, covering stages such as design, equipment (material) production, construction, operation, and recycling. The carbon emissions of a typical 500&#xa0;kV high voltage substation are modeled and calculated at each stage, revealing that the total carbon emissions for the lifecycle amount to 289,350.61&#xa0;tons of CO<sub>2</sub>, with the operation stage contributing to 92.71% of the emissions. The primary sources of carbon emissions are electrical loss and the use of sulfur hexafluoride (SF<sub>6</sub>) gas in gas-insulated switchgear (GIS) equipment. The study also suggests low-carbon measures for mitigating high carbon emission sources, providing valuable guidance for the construction of low-carbon substations.</p>

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Life cycle carbon dioxide emissions of a typical 500 kV substation: design, production, construction, operation, and recycling

  • 期刊论文

  • 发表日期：

    2025年4月1日

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  • Ziying Cheng,
  • Jun Jiang,
  • Hongyang Zhou,
  • Xiaoqin Zhang,
  • Zhen Wu,
  • Zhitao Xu,
  • Xing Chen

摘要

The substation plays a critical role in the construction of new power systems, and effective carbon emission accounting and monitoring are prerequisites for power carbon emissions reduction. The model for accounting the carbon emissions throughout the lifecycle of a substation is proposed, covering stages such as design, equipment (material) production, construction, operation, and recycling. The carbon emissions of a typical 500 kV high voltage substation are modeled and calculated at each stage, revealing that the total carbon emissions for the lifecycle amount to 289,350.61 tons of CO2, with the operation stage contributing to 92.71% of the emissions. The primary sources of carbon emissions are electrical loss and the use of sulfur hexafluoride (SF6) gas in gas-insulated switchgear (GIS) equipment. The study also suggests low-carbon measures for mitigating high carbon emission sources, providing valuable guidance for the construction of low-carbon substations.