A hierarchical and partition low-carbon evaluation model for active power distribution grid

Based on a comprehensive review of carbon emissions from power industry, this paper presents an evaluation way of carbon emissions. In order to make a more precise conclusion, the power system is divided into power generation side, transmission and distribution side and user side. Each side of the carbon emission calculation methods is formulated in different ways. Further, each side is divided into 2 or 3 parts according to whether it is connected to distributed power supply. Thereby, a hierarchical and partition low-carbon evaluation model is proposed for active power distribution grid. The proposed evaluation model adequately consider the contribution of renewable energy to low-carbon efficiency of the grid. New model can get more comprehensive and accurate carbon emission amount and conduct planning policies and regulations for low-carbon work. A case study is used to validate the proposed low-carbon evaluation model.