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Environmental Effects of Interstate Power Trading on Electricity Consumption Mixes

机译:州际电力交易对用电量的环境影响

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摘要

Although many studies of electricity generation use national or state average generation mix assumptions,in reality a great deal of electricity is transferred between states with very different mixes of fossil and renewable fuels,and using the average numbers could result in incorrect conclusions in these studies.We create electricity consumption profiles for each state and for key industry sectors in the U.S.based on existing state generation profiles,net state power imports,industry presence by state,and an optimization model to estimate interstate electricity trading.Using these "consumption mixes" can provide a more accurate assessment of electricity use in life-cycle analyses.We conclude that the published generation mixes for states that import power are misleading,since the power consumed in-state has a different makeup than the power that was generated.And,while most industry sectors have consumption mixes similarto the U.S.average,some of the most critical sectors of the economy-such as resource extraction and material processing sectors-are very different.This result does validate the average mix assumption made in many environmental assessments,but it is important to accurately quantify the generation methods for electricity used when doing life-cycle analyses.
机译:尽管许多发电研究均使用国家或州平均发电量假设,但实际上,在化石燃料和可再生燃料混合量非常不同的州之间转移了大量电力,使用平均数可能会导致这些研究得出错误的结论。我们基于现有的州发电概况,州净电力进口,各州的行业存在情况以及优化模型来估算州际电力交易,从而为美国的每个州和关键行业部门创建用电概况。使用这些“消费组合”可以在生命周期分析中提供了更准确的用电量评估。我们得出的结论是,由于各州所消耗的电力构成与所产生的电力不同,因此已发布的发电组合对各州的进口电力具有误导性。大多数工业部门的消费结构与美国平均水平相似,经济中一些最关键的部门诸如资源开采和材料加工部门之类的方法有很大的不同。此结果确实验证了许多环境评估中的平均混合假设,但在进行生命周期分析时,准确量化所用电能的生成方法很重要。

著录项

  • 来源
    《Environmental Science & Technology》 |2005年第22期|p.8584-8590|共7页
  • 作者

    JOE MARRIOTT; H.SCOTT MATTHEWS;

  • 作者单位

    Department of Civil and Environmental Engineering,Carnegie Mellon University,5000 Forbes Avenue,Pittsburgh,Pennsylvania 15213;

    Department of Civil and Environmental Engineering,Carnegie Mellon University,5000 Forbes Avenue,Pittsburgh,Pennsylvania 15213;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 环境化学;
  • 关键词

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