追踪从煤矿到中国的电力用户的碳流,使用集成模型
Kaiyun Liu1,2, Kun Wang3, Shuxiao Wang1,2
1State Key Joint Laboratory of Environment Simulation and Pollution Control, School of Environment, Tsinghua University, Beijing 100084, China.
Environmental science & technology
|August 8, 2023
概括
精确的碳流量跟踪对于减排至关重要. 这项研究为中国的电力系统制定了一个模型,揭示了排放的巨大差异,并强调了输电损失和贸易的影响.
科学领域:
- 环境科学 环境科学
- 能源系统分析 能源系统分析
- 气候变化缓解缓解 气候变化缓解
背景情况:
- 精确跟踪碳流是防止碳泄漏和分配减少CO2eq排放的责任的必要条件.
- 现有的方法可能无法充分考虑复杂电力系统中影响碳排放的所有因素.
研究的目的:
- 开发和应用一个集体模型,精确跟踪中国电力系统内的碳流.
- 量化基于单位的CO2eq排放量,评估输送和分配 (T&D) 损失的排放量,并分析因省际贸易而产生的排放转移.
主要方法:
- 集成煤炭质量测试,单个发电厂数据,以及动态材料能量流分析模型.
- 采用了扩展的互连电网模型,包括传输和分配 (T&D) 损失.
- 量化基于单位的CO2eq排放量和分析的空间碳转移.
主要成果:
- 煤炭发电机组的指导方针和基于研究的CO2eq排放之间的差异达到了[-95%,287%].
- 确定了主要进口省份 (广东,河北,江苏,江),将近一半的用户排放转移到生产基地.
- 传输和分配 (T&D) 损失占省级用户侧排放量的15%至20%.
结论:
- 该研究强调需要更新生命周期排放数据和空间碳转移分析.
- 精确的碳流量跟踪对于从国家到省级有效分配减排责任至关重要.
- 开发的整体模型为理解和管理电力系统中的碳排放提供了一个强大的框架.
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