Multi-resource Synergistic Planning Considering Carbon Allowance Trading

With global climate changing and environmental issues becoming more and more prominent, the energy transition, which is mainly characterized by clean and low-carbon, has become the world's consensus and unanimous action. How to synergize the development of conventional coal-fired power plants (CFPP) and variable renewable energy (VRE) is the key to achieving a safe and economic low-carbon transition of the power system. Therefore, this paper proposes a synergistic planning model for multi-timescale energy storage configuration and decision making for CFPP retirement and CCS conversion considering electric-carbon coupling to minimize the economic and environmental costs of the system. In the process of low-carbon transition supported by CFPP, two options are considered: phasing out or configuring carbon capture and storage (CCS) systems. Based on real-world datasets in China, we analyze the positive effects of multi-timescale energy storage and CFPP transformation on guaranteeing the safe and stable operation of the system and promoting carbon emission reduction under the electricity-carbon market. In addition, based on the future technological development and energy structure, we propose a path for the synergistic development of traditional power sources and VRE under the environment of the carbon market.