A Planning Method for Distribution System with Integration of Renewable Energy Generation Considering Optimal Distribution Switching

To enhance the integration and utilization of high-penetration renewable energy sources, the network structure of future power systems must be rationalized, and operational flexibility must be increased. This paper introduces a planning methodology that incorporates optimal distribution switching for distribution systems integrating renewable energy generation. The approach comprehensively factors in the uncertainties associated with renewable energy generation and preconceived accidents, while maximizing the utilization of optimal distribution switching (ODS). The methodology involves the construction of new lines and the updating of distribution switches to align with ODS requirements. During normal operations, ODS and optimal power generation dispatching are determined considering the uncertainties in renewable energy generation and load demands. Additionally, to minimize the impact of faults, power generation re-dispatching and ODS are adjusted based on the established schemes for the second stage and preconceived accidents. The efficacy of the method is demonstrated through validation on the enhanced IEEE RTS-24 system.