Medium-voltage power distribution network source-grid-storage double-layer planning method considering flexibility
By proposing a two-layer planning method in the medium voltage distribution network, combining flexibility evaluation indicators to optimize the site selection and capacity of the lines to be built, DPV and ESS, the problems of unstable voltage, uneven source and load distribution and insufficient grid flexibility in the distribution network are solved, and the flexibility and economicality of the distribution network are improved.
Patent Information
- Application Number
- PCT/CN2023/126432
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-09-25
- Filing Date
- 2023-10-25
- Publication Date
- 2025-04-03
AI Technical Summary
High permeability distributed photovoltaics and large-scale power load access lead to unstable voltage, uneven source load distribution and insufficient grid flexibility in the distribution network. The existing technology mainly relies on equipment configuration and optimized operation to solve the DPV absorption problem, but it has failed to effectively improve grid flexibility.
A dual-layer planning method for source and storage of medium voltage distribution networks is proposed to consider flexibility. Through a dual-layer planning framework based on flexibility evaluation indicators, combining net load volatility and line load margin balance indicators, the site selection and capacity of the lines to be built, DPV and ESS are optimized, and the flexibility and economicality of the distribution network are improved.
Through the two-layer planning method, the flexibility and economy of the distribution network are improved, the penetration rate of DPV is improved, and the purchase of electricity from the superior power grid is reduced, which is adapted to the needs of new power systems for large-scale loads and DPV access.