Scalable intelligent renewable microgrids based on energy storage systems

微电网是由可控分布式发电机(DG)和可再生资源、存储设备和负载组成的能源系统，能够与主电网并行运行或独立于主电网运行。电力系统最近面临的一个挑战涉及高渗透水平的微电网集成。可扩展微电网的拓扑开发，以及其协调和控制，以形成稳定、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，智能微电网的设计目的是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荷提供电力。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的智能拓扑，使微电网成为一个模块化和即插即用的系统，便于根据需要和负担能力逐步扩展系统。另一个重要目标是设计一个对技术人员的依赖最小的微电网，以构建、扩展、维护和保护系统免受故障和恶劣环境的影响。 这种模块化的可再生微电网特别有利于边远社区和原住民等预算或设施有限的人。与现有的可再生分布式发电系统不同，这项技术在大规模住宅应用中的使用也将有助于电网的支持。这是通过频率调节、高峰时间需求响应、无功补偿以及谐波和凹陷/隆起补偿来帮助平衡电网来实现的。此外，当在不同的功率水平下设计时，该技术可用于公用事业连接时间有限的郊区、设备站和任何移动单元。

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.