Protection, Control and Optimal Operation of Microgrids with Renewable Generation

可再生能源微电网的保护、控制和优化运行

• 批准号: 311730-2013
• 负责人: Rajapakse, Athula
• 金额: $ 2.55万
• 依托单位: University of Manitoba
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2013
• 资助国家: 加拿大
• 起止时间: 2013-01-01 至 2014-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=526229
• 关键词: Protection; Control; Optimal; Operation; Microgrids

A microgrid is formed by coordinating the operation of distributed generators (DGs), energy storage devices, and controllable loads in a section of distribution grid so that it can operate in parallel with the grid or as an autonomous power island. Microgrids provide an attractive structure to integrate small-scale generation based on renewable energy resources and energy efficient technologies such as combined heat and power (CHP) generation, and demand responsive loads. However, there are several technical challenges encountered in implementation of microgrids, especially when the generation is from the intermittent sources such as wind and solar photovoltaic (PV). These challenges include coordination of the fault protection in microgrids during both parallel and islanded modes of operation; detection of faults when the generators have limited fault current contributions; optimal use of energy storage and generation resources in islanded microgrids; and control of generation and energy storage to ensure voltage and frequency stability during disturbances.

微电网是通过协调一段配电网中的分布式发电机（DG）、储能装置和可控负载的运行而形成的，使其可以与电网并联运行或作为一个自治的电力岛运行。微电网提供了一种有吸引力的结构，可以整合基于可再生能源和节能技术（例如热电联产（CHP）发电和需求响应负载）的小规模发电。然而，微电网的实施遇到了一些技术挑战，特别是当发电来自风能和太阳能光伏（PV）等间歇性来源时。这些挑战包括在并联和孤岛运行模式下协调微电网的故障保护；当发电机的故障电流贡献有限时检测故障；优化利用孤岛微电网中的储能和发电资源；以及发电和储能的控制，以确保扰动期间的电压和频率稳定性。