Accurate calculation of each province”s CO 2 emissions in the process of economic development is the basis of analyzing regional energy and environment efficiency and making the regional energy saving policies.Based on the theory of carbon emission flow in power systems,a method of calculating Chinese provinces” CO 2 emissions from fossil energy consumption is developed proceeding from the secondary-energy terminal consumption.By considering the provincial trading of secondary energy,especially interprovincial electricity transactions under the regional grid structure,the provincial CO 2 emissions from fossil energy consumption are calculated according to the energy consumption and loss of terminals.Owing to the serious unbalance of domestic energy resources distribution and energy consumption,there are a lot of interprovincial secondary energy transactions.Thus the proposed method is more rational than the traditional methods which only consider the primary energy consumption when calculating each province”s CO 2 emissions from fossil energy consumption.%准确测算各省在经济发展过程中的 CO 2排放量是分析地区能源环境效率和制定区域节能减排政策的基础。文中基于电力系统碳排放流理论，从二次能源终端消费角度出发，发展了计算中国分省化石能源消费 CO 2排放量的方法。通过考虑二次能源的省际交易，特别是区域电网结构下的电力跨省调配，按能源终端消费量和损失量反推各省市的化石能源消费 CO 2排放量。由于国内能源资源分布和能源消费严重不均衡，存在大量的二次能源跨省交易，所提出的方法与传统使用一次能源消费量直接计算各省市化石能源消费 CO 2排放量相比更加合理。
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