期刊
IEEE TRANSACTIONS ON POWER SYSTEMS
卷 36, 期 2, 页码 948-960出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TPWRS.2020.3015061
关键词
Planning; Load modeling; Power system reliability; Conductors; Indexes; Reliability engineering; Distribution network; multistage expansion planning; reliability assessment; network reconfiguration
资金
- National Science Foundation of China [51725703]
The study introduces a novel multistage expansion planning model for mesh distribution networks, with explicit reliability assessment and customization of different investment/reliability preferences for buses. The model is formulated as a mixed-integer linear programming instance and effectively solved by off-the-shelf solvers, with simulation results demonstrating the effectiveness and flexibility of the approach.
To achieve high reliability, the urban distribution networks are mesh-constructed and radial-operated, in which the outage load can be restored to adjacent feeders via tie-lines after faults. Conventionally, iterative optimization-simulation methods and heuristics are adopted for distribution network planning, which cannot guarantee global optimality. Besides, existing reliability-constrained planning model cannot explicitly assess the reliability indices for mesh distribution networks, so the resulted plan scheme may be overly invested. In this paper, we propose a novel multistage expansion planning model for mesh distribution networks, in which reliability assessment is explicitly implemented as constraints. The different investment/reliability preferences for buses are also customized. Specifically, post-fault load restoration between feeders through tie-lines is modeled as a case of post-fault network reconfiguration. The planning model is then cast as an instance of mixed-integer linear programming and can be effectively solved by off-the-shelf solvers. We use a 54-node system to test the performance of proposed model. Simulation results show the effectiveness and flexibility of this methodology.
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