Novel paradigms for transient simulation of modern electric-power systems

一个多世纪以来，电力系统一直是现代文明的支柱。在这段时间里，它们已经从小型和孤立的设施演变为往往相互连接国家甚至大陆的大型系统。计算机建模和仿真一直是现代电力系统设计和运行中不可或缺的实践，可以说是解决其复杂性的唯一可行手段。这些变流器用于传输大量电力(例如高压直流输电系统)，改善电网的运行条件(例如灵活的交流输电系统)，或将可再生能源接入电网(例如风能或太阳能)。随着电网中电力电子设备的不断涌现，传统的仿真算法和仿真平台在正确描述电网的暂态和动态行为方面面临着越来越大的局限性。这是因为现有的电力系统暂态模拟器主要是为带有旋转机械的传统电力系统设计的，没有许多电力电子转换器。*拟议的研究重点是开发下一代电力系统暂态仿真算法和平台，这些算法和平台是专门为电力电子转换器大量嵌入的新兴电网设计的。研究的核心是基于扩展频率动态相量的概念。这些数学结构为复杂电力系统的计算机建模和仿真提供了极大的灵活性和选择性。建立在扩展频率动态相量上的仿真平台将能够在更长的时间内以受控的分辨率仿真电力系统，并在先进和专门的计算硬件上进行仿真，所有这些都远远超出了目前的可能。*这一及时的研究不仅将直接有益于电力系统仿真硬件和软件的制造商，而且几乎有利于所有依赖准确的计算机仿真来设计和操作电力系统的公用事业公司、设备制造商和其他利益相关者。它的主要好处将包括卓越的选择性和准确性，可控的计算负担，以及基于模拟的研究的平台灵活性。这项研究将培养11名HQP(3名S博士、3名硕士S和5名USRA学生)。这项研究及其成果，包括将要产生的知识和HQP，将对巩固加拿大作为电力系统仿真行业全球领先者的地位做出重要贡献。

Electric-power systems have been the backbone of the modern civilization for over a century. During this time, they have evolved from small and isolated installations to massive systems often interconnecting countries or even continents. Computer modeling and simulation has been an indispensable practice in the design and operation of modern power systems as, arguably, the only viable means to tackle their complexity.***   Modern power systems contain an increasing number of power-electronic converters. These converters serve to transmit large amounts of power (e.g. high-voltage dc transmission systems), improve the grid's operating conditions (e.g. flexible ac transmission systems), or interface renewable sources to the grid (e.g. wind or solar power). With the accumulative presence of power electronics in the grid, conventional simulation algorithms and platforms are facing escalating limitations in properly representing the transient and dynamic behavior of the power grid. This is because existing power-system transient simulators have been designed mainly for conventional power systems with rotary machines and without many power-electronic converters. ***   The proposed research focuses on the development of next generation power-system transient simulation algorithms and platforms that are designed specifically for the emerging grid in which power-electronic converters are heavily embedded. The core of the research is based upon the notion of extended-frequency dynamic phasors. These mathematical constructs provide a great deal of flexibility and selectivity in computer modeling and simulation of complex power systems. A simulation platform built upon extended-frequency dynamic phasors will enable simulation of power systems with controlled resolution, over extended periods of time, and on advanced and specialized computing hardware, all far beyond what is presently possible. ***   This timely research will be directly beneficial not only to the manufacturers of power-system simulation hardware and software, but also virtually all utilities, equipment manufacturers, and other stakeholders who rely on accurate computer simulations to design and operate power systems. Its main benefits will include superior selectivity and accuracy, controlled computational burden, and platform flexibility for simulation-based studies. The research will train 11 HQP (3 Ph.D.'s, 3 M.Sc.'s and 5 USRA students). The research and its output, both the knowledge to be generated and the HQP, will be important contributors to secure Canada's stance as the global leader in the power-systems simulation industry.***