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Modular Transformer Converter-Based Convertible Static Transmission Controller for Transmission Grid Management

机译：基于模块化变压器转换器的可转换静态传输控制器，用于输电网管理

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摘要

This paper investigates the concept of convertible static transmission controller (CSTC) using modular transformer converter (MTC) as the building block. The MTC is a bidirectional back-to-back ac/ac power conversion unit and the CSTC is a versatile transmission controller asset for dynamic power flow control and contingency management of the transmission grid. The proposed CSTC with new functions has several advantages compared to existing flexible ac transmission system controllers. System modularity for manufacturers and utilities/system operators using standard high power electronic systems is one of the advantages of this structure. In this paper, algebraic models of the CSTC are derived in two different operation modes (series–shunt and shunt–shunt connecting configurations). The proposed algebraic models are used to define the reference values for the CSTC converters based on the desired operating points for the meshed power system, the power transformers in particular. The dynamic performance of the CSTC with the proposed control structures and algebraic models will be investigated based on the PSCAD simulation. To prove the CSTC as a transmission asset and to verify the control structure and algorithm, ultrahigh fidelity controller hardware-in-the-loop testing has been conducted and comparative results will be presented. Finally, lab-scale experimental results are reported on the dynamic performance of the MTC-based CSTC.
机译：本文研究了使用模块化变压器转换器（MTC）作为构建模块的可转换静态传输控制器（CSTC）的概念。 MTC是双向背对背交流/交流电源转换单元，而CSTC是用于动态功率流控制和传输电网应急管理的多功能传输控制器资产。与现有的柔性交流传输系统控制器相比，拟议的具有新功能的CSTC具有多个优势。使用标准大功率电子系统的制造商和公用事业/系统运营商的系统模块化是该结构的优势之一。在本文中，CSTC的代数模型是在两种不同的操作模式（串联-并联和并联-并联连接配置）中得出的。所提出的代数模型用于基于网状电力系统（尤其是电力变压器）的所需工作点来定义CSTC转换器的参考值。在PSCAD仿真的基础上，将研究CSTC具有建议的控制结构和代数模型的动态性能。为了证明CSTC是一种传输资产，并验证控制结构和算法，已进行了超高保真控制器硬件在环测试，并将给出比较结果。最后，报告了基于MTC的CSTC的动态性能的实验室规模的实验结果。

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