论文标题
混合EMT-TS仿真策略研究高带宽MMC的HVDC系统
Hybrid EMT-TS Simulation Strategies to Study High Bandwidth MMC-Based HVdc Systems
论文作者
论文摘要
模块化多级转换器（MMC）广泛用于现代高压直流（HVDC）传输系统的设计。基于MMCS的HVDC系统的高保真动态模型需要较小的仿真时间步骤，并且可以在电磁瞬态（EMT）仿真程序中准确建模。 EMT程序显示出缓慢的模拟速度和对模型大小的限制，并带来了某些挑战，可以在系统级模拟中测试高保真性HVDC模型。本文介绍了混合模拟框架的设计和实施，该框架可以共同模拟整个东部互连系统的亚特兰大 - 奥兰多HVDC系列的EMT模型和瞬态稳定性（TS）模型。本文还介绍了在不同时间步骤中模拟的两个高保真HVDC线模型的实现，并讨论了一种对HVDC线上两侧缓冲区区域进行尺寸尺寸的专用方法。提出并比较了两个具有不同尺寸的缓冲区区域的HVDC模型的仿真结果。
Modular multilevel converters (MMCs) are widely used in the design of modern high-voltage direct current (HVdc) transmission system. High-fidelity dynamic models of MMCs-based HVdc system require small simulation time step and can be accurately modeled in electro-magnetic transient (EMT) simulation programs. The EMT program exhibits slow simulation speed and limitation on the size of the model and brings certain challenges to test the high-fidelity HVdc model in system-level simulations. This paper presents the design and implementation of a hybrid simulation framework, which enables the co-simulation of the EMT model of Atlanta-Orlando HVdc line and the transient stability (TS) model of the entire Eastern Interconnection system. This paper also introduces the implementation of two high-fidelity HVdc line models simulated at different time steps and discusses a dedicated method for sizing the buffer areas on both sides of the HVdc line. The simulation results of the two HVdc models with different sizes of buffer areas are presented and compared.
