|
Abstract
|
Nowadays, deployment of micro-grids is one of the important trends in modern distribution network planning. Implementing this strategy aim to improve the ability of the distribution network to withstand extreme weather conditions and supplying critical loads. While the literature has focused chiefly on operating distribution systems and partitioning them into micro-grids, in this work, the idea of planning a new LV radial distribution system based on multi micro-grids for a Green-field is proposed. The main contribution is providing a framework to plan a resilient LV distribution system step by step for a New Town without any operating grid. In the planning process, some micro-grids are formed, and their service area and technical specifications are determined by a multi-objective optimization algorithm considering hardening and resiliency issues. The planning is done in a way that all predefined critical loads will be supplied. To consider the effects of extreme weather conditions, failure rates of poles and conductors due to thunderstorms are considered as a function of wind speed, and their appropriate models are used. Then provided method is implemented in a test case with three major scenarios. Accordingly planning in normal condition, considering hardening options and resilient network planning cases are evaluated. Simulation results and resiliency metrics are compared in detail.
|