摘要

A micro-grid contains quite a few distributed generators besides multiple loads. The power generated from these distributed generators may vary greatly over time. Therefore, the micro-grid may have different power generating or consuming characteristics in different time slots. First, a mathematical model for micro-grid power generating and consuming characteristics is developed. Then, a distribution network planning method containing a small proportion of micro-grids is studied, including the method of distribution substation planning, restrictions on micro-grid access to network, and the model of distribution network structure planning. Finally, a distribution network planning example is used to analyze and verify the planning method.

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