Scalable intelligent renewable microgrids based on energy storage systems

微电网是一个由可控分布式发电机（dg）和可再生资源、存储设备以及能够与主电网并行或独立运行的负载组成的能源系统。高渗透微电网的集成是当前电力系统面临的一个挑战。可扩展微电网的拓扑发展及其协调和控制，以形成一个稳定、可靠、高效、灵活和有弹性的能源系统，是本项目寻求解决的问题。在这个项目中，智能微电网被设计用于从可再生资源中提取电力，并在并网和独立运行模式下向负载提供电力。为了在没有主电网的情况下运行，微电网通常需要储能系统，并且通常是定制设计的，具有很高的复杂性。该项目的重点是设计新颖的智能拓扑结构，使微电网成为一个模块化和即插即用的系统，促进与需求和可负担性成比例的系统逐步扩展。另一个重要的目标是设计一个对技术人员的依赖最小的微电网，以建设、扩展、维护和保护系统免受故障和恶劣环境的影响。这种模块化可再生微电网特别有利于那些预算或设施有限的人，如偏远社区和原住民。与现有的可再生DG系统不同，在大规模住宅应用中使用这项技术也将有助于支持电网。这是通过频率调节、峰值需求响应、无功补偿、谐波和凹陷/膨胀补偿来帮助平衡电网来实现的。此外，当这种技术被设计成不同的功率水平时，它可以被郊区有限的公用事业连接时间、设备站和任何移动单元所采用。

A microgrid is an energy system consisting of controllable distributed generators (DGs) and renewable resources, storage devices, and loads capable of operating in parallel with, or independently from, the main power grid. A recent challenge for the electric power system involves integration of microgrids at high penetration level. Topology development of a scalable microgrid, as well as its coordination and control to form a stable, reliable, efficient, flexible, and resilient energy system are what this project seeks to address.In this project smart microgrids are designed to extract power from renewable resources and provide it to loads in both grid-connected and standalone modes of operations. In order to operate in the absence of main power grid, microgrids typically require energy storage systems, and are usually custom designed with a high level of complexity. This project is focused on the design of novel smart topologies such that the microgrid becomes a modular and plug-and-play system facilitating a gradual expansion of the system proportional to the need and affordability. Another important objective is to design a microgrid with a minimum dependency on the technical staff to construct, expand, maintain, and protection system against failures and harsh environment.Such modular renewable microgrids are specifically beneficial to people with limited budgets or facilities such as remote communities and first nations. Unlike existing renewable DG systems, the use of this technology in large scale residential applications would also contribute to the support of the grid. This is achieved by helping balance the grid through frequency regulation, peak time demand response, reactive power compensation, and harmonic and sag/swell compensation. Furthermore, this technology, when designed at different power levels, can be employed by suburban areas with limited utility connection time, equipment stations, and any mobile units.