Interfacing Next-Generation Grid-Scale Storage to the Electrical Power Network (Inter-Storage)

将下一代电网规模存储连接到电力网络（存储间）

• 批准号: EP/W027186/1
• 负责人: Mike Barnes
• 金额: $ 107.06万
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2022
• 资助国家: 英国
• 起止时间: 2022 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=EP%2FW027186%2F1
• 关键词: Interfacing; Next; Generation; Grid; Scale

Next generation storage technologies have a key role to play in the future electrical power system, making up the difference between what low-carbon sustainable generation can provide, and what the grid needs. This is both in terms of longer term events (shifting energy from when it is generated to when it is used several hours later) and shorter terms events (providing grid support services to 'keep the lights on'). The UK electrical grid is a legacy system - it has been designed under the assumption that grid support services and second-by-second power balancing is undertaken by large central generating units, typically several hundred megawatts in size. However future energy storage units like flywheels will not be one 500 MW flywheel connected at one point: the storage will be something like 500 individual units each of 1MW, connected individually or in clusters of a small number of units. In order for such systems to interface to, and work to support the legacy grid, the interface system (power electronics and control) must be designed to work with the new dynamics of the storage unit and the legacy requirements of the electrical grid. This means that some form of supervisory control is required to modify the local interface control of each storage unit to enable the combined system to behave as a coordinated cohesive system. A local unit would not have an oversight of how the wider network is performing or the other units are behaving and thus the overall system performance would be at best sub-optimal, and at worst individual units could end up fighting with each other - applying contradictory control effort to the system. The dynamics of the control at the point of use would need to be fast to both enable the tight control of current required by modern power electronics, and to enable the fast response required in new systems with large amounts of power electronic interfaced generation and low inertia.This project will investigate the design of the power electronics interface and its local control, considering both flywheel and compressed air energy storage. It will examine the supervisory control and telecommunications requirements needed to coordinate such systems, the required innovations in grid support services, and will formulate new methodologies to provide the required services. And it will investigate the practical constraints of implementing such a system using a real-time digital simulator (RTDS) coupled to a supervisory control system, network emulation and local controller system units.

下一代存储技术在未来的电力系统中起着关键作用，构成了低碳可持续发电所能提供的和电网所需的差异。这既是长期事件（将能量从生成的能量转移到几个小时后使用的能量）和较短的术语事件（提供网格支持服务以“保持照明”）。英国电网是一个遗留系统 - 它是根据Grid Support Services和第二次电源平衡的假设设计的，大型中央发电单元（通常是数百兆瓦）的大小。但是，像飞轮这样的未来储能单元在某一时刻不会连接一个500 mW的飞轮：存储将是1MW中的500个单独的单元，单独连接或在少数单元的群集中连接。为了使此类系统与传统网格接口并努力，必须设计接口系统（电源电子和控制），以与存储单元的新动力学以及电网的遗产要求一起工作。这意味着需要某种形式的监督控制来修改每个存储单元的局部接口控制，以使组合的系统能够作为协调的凝聚系统行为。本地单位不会对更广泛的网络的性能或其他单位的行为进行监督，因此总体系统性能充其量是最佳的，在最坏的情况下，最终的单个单位最终可能会互相战斗 - 将矛盾的控制工作应用于系统。在使用点的控制动力学需要快速地使现代电力电子所需的电流严格控制，并在具有大量电源电子交互发电和低惯性的新系统中所需的快速响应，并且该项目将研究电源电子界面的设计及其本地控制，考虑了飞行器和压缩的空气能量存储。它将检查协调此类系统，网格支持服务中所需的创新所需的监督控制和电信要求，并将制定新方法以提供所需的服务。它将使用与监督控制系统，网络仿真和本地控制器系统单元相连的实时数字模拟器（RTD）来研究实现此系统的实际约束。

项目成果

Development of a flywheel energy storage system model in RSCAD-RTDS and comparison with PSCAD

RSCAD-RTDS 中飞轮储能系统模型的开发及与 PSCAD 的比较

• DOI: 10.1049/icp.2023.2021
• 发表时间: 2023
• 作者: Vilchis-Rodriguez S