Novel paradigms for transient simulation of modern electric-power systems

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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.***