Development of Dependable Wideband Computer Models for Power System Components

电力系统日益复杂，需要在仿真器中使用精确的、高度可移植的和通用的元件模型来评估系统在正常和非正常运行条件下的响应。为了更准确地评估开关和闪电感应过电压、短路电流、谐波和谐振条件，需要完全的频率相关模型。 这项研究方案的主要短期目标是为传输线、电缆和网络等价物开发可靠的宽带模型。它的目标是引入比目前在学术文献和/或专业等级软件中可用的模型更全面、数值稳定、准确和计算效率更高的模型。 这一建议将在电力系统的先进和精确仿真方面向前迈进一步。输电线路和电缆是电力系统中的关键部件，对电力系统仿真器的计算时间和精度有重要影响。随着电力系统、高压直流连接、长距离高压交流电缆安装和通过电缆连接的风电场电网中基于电力电子元件的渗透率增加，对这些组件的宽带建模变得比过去更加重要。提高线路和电缆模型的性能和精度将有助于提高系统的效率，降低设计成本。

The growing complexity of power systems makes it necessary to use accurate, highly portable and generalized component models in simulators to assess system response under normal and abnormal operating conditions. The full frequency dependent models are needed for higher accuracy in the assessment of switching and lightning induced overvoltages, short-circuit currents, harmonics and resonance conditions. The principal short-term objective of this research proposal is the development of dependable wideband models for transmission lines, cables and network equivalents. It is targeted to introduce more comprehensive, numerically stable, accurate and computationally efficient models than the presently available models in the academic literature and/or professional grade software. This proposal will provide a step forward in advanced and precise simulation of power systems. Transmission lines and cables are key components in power systems and have significant impact on computing time and precision of power system simulators. The wideband modeling of these components is more important than in the past with increased penetration of power electronics based components in power systems, HVDC connections, long high voltage AC cable installations and wind park grids connected through cables. Improved performance and precision of line and cable models will help improve efficiency of the system and reduce design costs.