随着2030年碳达峰目标的确立,我国能源系统碳减排发展方向进一步明确,而电力行业作为我国碳排放占比最大的单一行业,其低碳转型是我国碳达峰目标实现的重要途径.但现有研究多侧重于国家层面碳达峰实现路径的技术分析或成本核算,缺乏对具有复杂跨区电力流交换及能源资源开发多方受限的区域电力系统的针对性研究;同时系统成本的测算也缺乏全寿命周期视角,并忽视了存量惯性和增量扰动的动态关系.因此,本文从全寿命周期的视角构建碳达峰目标下区域电力系统供电成本测算模型,从经济性角度对碳目标的实现路径进行对比分析,为电力系统转型的路径选择和政策制定提供参考.“,”With the establishment of the carbon-peak target by 2030, the direction of carbon emission reduction in China\'s energy system has been further clarified. As the industry with the largest proportion of carbon emissions in China, the low-carbon transformation of the electric power industry is critical to realize the carbon-peak target. Current research mostly focuses on technical analysis or system cost accounting of the carbon-peak realization path at the national level. There is a lack of targeted research on regional power systems with complex inter-regional power flow exchange and limited energy resource development. Simultaneously, the calculation of the system cost lacks the perspective of the life cycle and ignores the inertia of the stock and change inertia of incremental disturbance. From the perspective of the life cycle, this study proposes a calculation model of power supply cost for regional power systems according to the carbon-peak target, analyzes the realization path of the carbon target from an economic perspective, and provides references for the path selection and policy formulation of system transformation.