A power electronic converter based transmission line emulator (TLE) is presented in this paper. The TLE can emulate medium and long lines in steady-state and symmetrical faults occurring at any point in the line. A traveling wave based numerical scheme for the emulation of the line is identified and then implemented on a novel digital architecture in the field-programmable gate array part of a system on chip platform. The proposed architecture meets the real-time computation constraints through parallel processing and optimal use of hardware resources (DSP slices, block RAMs, etc.). A comprehensive analysis to determine the two important parameters of the TLE-the power converter switching frequency and observer update period while satisfying a number of constraints coming from the numerical scheme, power, and embedded hardware-has been presented. Finally, relevant simulation and experimental results on a developed 400-V 15-kVA TLE prototype have been presented for validation.

中文翻译：

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基于电力电子转换器的柔性传输线仿真


本文提出了一种基于电力电子转换器的传输线仿真器（TLE）。 TLE 可以模拟线路中任意点发生的稳态和对称故障的中长线路。确定了用于线路仿真的基于行波的数值方案，然后在片上系统平台的现场可编程门阵列部分中的新型数字架构上实施。所提出的架构通过并行处理和硬件资源（DSP 切片、块 RAM 等）的优化使用来满足实时计算约束。提出了一种综合分析，以确定 TLE 的两个重要参数——功率转换器开关频率和观测器更新周期，同时满足来自数值方案、功率和嵌入式硬件的许多约束。最后，在开发的 400V 15kVA TLE 原型上提供了相关仿真和实验结果以供验证。