A low-voltage multi-terminal flexible interconnection coordination planning method for a new power distribution network oriented to high-proportion distributed power consumption, equipment and medium

By constructing a medium-voltage flexible interconnection framework and a low-voltage multi-terminal flexible interconnection candidate topology, the problems of reverse power flow and power quality constraints in distribution network planning were solved, and the effective absorption of a high proportion of distributed power sources and grid coordination were achieved.

CN122178350APending Publication Date: 2026-06-09PUYUAN CONSTRUCTION INVESTMENT (SHANGHAI) NEW ENERGY DEVELOPMENT CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-02-12
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing distribution network planning struggles to simultaneously address consumption needs, power flow control, and power quality constraints under conditions of high-proportion distributed power generation access. This is particularly evident at the low-voltage distribution area level, where issues such as reverse power flow, voltage over-limit, and three-phase imbalance are prominent. Furthermore, medium-voltage and low-voltage planning are fragmented and lack coordinated design.

Method used

By constructing a medium-voltage flexible interconnection framework, generating candidate topologies for low-voltage multi-terminal flexible interconnection, determining boundary power quotas, establishing a controllable reverse power flow corridor, and incorporating voltage, three-phase imbalance, and harmonic constraints during the planning stage, a coordinated planning framework for medium- and low-voltage multi-terminal flexible interconnection is formed.

Benefits of technology

This improved the engineering consistency and feasibility of the planning scheme, reduced repeated adjustments on the operation side, ensured clear selection of reverse power flow channels and capacity boundaries, and met the power quality indicators.

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Abstract

The application discloses a low-voltage multi-terminal flexible interconnection coordination planning method for a new power distribution network for high-proportion distributed power consumption, equipment and medium, belonging to the technical field of power coordination planning, comprising: dividing the low-voltage network into transformer area clusters, calculating the boundary controllable injection capacity envelope of the transformer area cluster; according to the medium-voltage flexible interconnection skeleton and the medium-voltage network operation constraint, generating the boundary power quota for each transformer area cluster; determining the low-voltage multi-terminal flexible interconnection scheme, and constructing the reverse power flow controllable corridor; performing integrated constraint checking, and outputting the coordination planning result. The application improves the engineering consistency and implementability of the planning scheme as a whole, and reduces the dependence of subsequent operation side repeated adjustment and reinforcement.
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