Performance of a self-commutated BTB system under a single-line-to-ground fault condition

M. Hagiwara, H. Akagi, H. Fujita
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引用次数: 4

Abstract

This paper deals with a self-commutated BTB (back-to-back) system for the purpose of power flow control and/or frequency change in transmission systems. Each BTB unit consists of two sets of 16 three-phase voltage-source converters, and their AC terminals are connected in series with each other via 16 three-phase transformers. Hence, the BTB unit uses totally 192 switching devices capable of achieving gate commutation. This results in a great reduction of voltage and current harmonics without performing PWM control. Simulation results verify the validity of the proposed system configuration and control scheme not only under a normal operating condition but also under a single-line-to-ground fault condition.
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单线对地故障条件下自换相BTB系统的性能
本文研究了一种用于输电系统潮流控制和/或频率变化的自换向BTB(背对背)系统。每台BTB由两组16台三相电压源变换器组成,其交流端通过16台三相变压器串联。因此,BTB单元总共使用了192个能够实现栅极换相的开关器件。这导致在不执行PWM控制的情况下大大降低电压和电流谐波。仿真结果验证了所提出的系统配置和控制方案在正常运行和单线接地故障情况下的有效性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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