Optimal Planning of Soft Open Points in Distribution Systems Considering Renewable Energy Integration and Resilience Enhancement

The high uncertainty of renewable energy and increasing frequency of extreme events have posed significant challenges to the development of new power systems (NPS). A single-scenario resource planning methods are inadequate to meet the multi-scenario requirements of NPS. Soft open points (SOPs) can realize accurate power flow control and voltage profile regulation in conventional scenarios, while providing voltage support and rapid load transfer in extreme scenarios. In this paper, an optimal planning method of soft open points in distribution systems is proposed, aiming to address the challenges of renewable energy curtailment and resilience enhancement through the application of SOPs. Firstly, this paper analyzes the roles of SOPs in facilitating renewable energy integration and enhancing resilience. Afterwards, the SOPs deployment model is established with the objectives of minimizing the cost involving investment, renewable curtailment, and load shedding. Case studies validate the effectiveness and cost-efficiency of the proposed method.