Life-Cycle Low-Carbon Assessment of Overhead Transmission Lines in China: A Combined Approach Using the Analytic Hierarchy Process and Entropy Weighting
中国における架空送電線のライフサイクル低炭素評価：階層分析法とエントロピー重み付けを組み合わせたアプローチ (AI 翻訳)
Ting Zeng, Y. Chen, Liuhuo Wang, Mingpeng Yuan, Binbin Ma, Jia Liu, Xili Wang
🤖 gxceed AI 要約
日本語
本研究は、中国の500kV架空送電線を対象に、設計・建設・運用・廃棄の4段階にわたる14指標からなる低炭素評価指標系を構築し、AHPとエントロピー法を組み合わせたハイブリッド評価モデルを提案した。実証分析の結果、総合評価スコアは80.219で「低炭素」グレードに相当し、線路損失率、運用時炭素排出量、単位長さ当たりの鋼材消費量が主要な影響指標であることを明らかにした。送電線プロジェクトの低炭素設計やグリーン建設、運用損失削減、資源循環型廃棄の意思決定に定量的な支援を提供する。
English
This study constructs a low-carbon evaluation index system for overhead transmission lines in China, covering 14 indicators across four life-cycle stages (design, construction, operation, recycling), and proposes a hybrid model combining AHP and entropy weighting. Empirical analysis of a 500 kV double-circuit line yields a score of 80.219 (low-carbon grade), identifying line loss rate, operational carbon emissions, and steel consumption per unit length as key indicators. The framework provides quantitative support for low-carbon design, green construction, loss reduction, and resource-oriented retirement decisions.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
日本の電力インフラ老朽化や送配電網の脱炭素化が進む中、ライフサイクル全体での炭素評価手法は、SSBJ開示や投資家対応に有用な示唆を与える。特に、送電線の運用損失や材料消費に着目した指標は、日本の電力会社が設備投資や更新計画を策定する際の参考となる。
In the global GX context
As global grids modernize for net-zero, this life-cycle carbon assessment framework for transmission lines offers a replicable methodology for infrastructure disclosure under TCFD/ISSB. The hybrid AHP-entropy weighting approach addresses weight subjectivity, providing a robust tool for utilities worldwide to evaluate and report on grid decarbonization.
👥 読者別の含意
🔬研究者:Provides a novel hybrid weighting method for life-cycle carbon assessment of grid infrastructure, applicable to other energy infrastructure.
🏢実務担当者:Offers a practical evaluation framework and key indicators for low-carbon design and operation of transmission lines, useful for sustainability reporting.
🏛政策担当者:Highlights the importance of life-cycle carbon accounting for grid infrastructure, informing standards and incentives for low-carbon grid development.
📄 Abstract（原文）
Driven by global carbon neutrality targets, the low-carbon transformation of power systems necessitates rigorous carbon evaluation of grid infrastructure. However, existing assessments of overhead transmission lines often exhibit incomplete life-cycle boundaries and lack a coordinated approach to subjective and objective weight allocation. To address these gaps, this study targets overhead transmission lines and constructs a comprehensive low-carbon evaluation index system comprising 14 indicators across four life-cycle stages, namely design, construction, operation, and recycling. A hybrid evaluation model is proposed based on the combined analytic hierarchy process and entropy weighting method. The analytic hierarchy process is utilized to derive expert-based subjective weights, while the entropy weighting method extracts objective data variations from multiple samples, which are then integrated to obtain robust composite weights. An empirical analysis conducted on a 500 kV double-circuit overhead transmission line project in China validates the proposed framework. The results reveal a comprehensive evaluation score of 80.219, corresponding to a “low-carbon” grade. Moreover, the line loss rate (0.234227), operational carbon emissions (0.133978), and steel consumption per unit length (0.122381) are identified as the pivotal indicators dominating the evaluation outcome. This research provides quantitative support and practical criteria for decision-making regarding low-carbon design, green construction, operational loss reduction, and resource-oriented retirement of transmission line projects.
🔗 Provenance — このレコードを発見したソース
- openalex https://doi.org/10.3390/en19163709first seen 2026-08-09 05:11:21
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