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首页> 外文期刊>IEEE Transactions on Industry Applications >A Novel Control Approach for Protection of Multiterminal VSC-Based HVDC Transmission System Against DC Faults
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A Novel Control Approach for Protection of Multiterminal VSC-Based HVDC Transmission System Against DC Faults

机译：一种基于多端基于VSC的HVDC输电系统防止直流故障的新型控制方法

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摘要

Overall performance of the voltage source converters (VSCs) has improved during the recent years. Improvement of the VSCs along with the attractive features of the VSC-based high-voltage direct current (HVdc) transmission systems over the thyristor-based HVdc transmission systems make it possible to build multiterminal VSC HVdc transmission systems. However, the VSCs are vulnerable against dc-side faults and a method needs to be employed to interrupt the dc fault current. In this paper, three different configurations of solid-state dc circuit breakers (CB) for protection purposes are studied. Moreover, a new control method to protect the VSCs against the dc-side fault is proposed. The new method makes it possible to interrupt the dc fault current with the existing ac breakers on the ac-side or with the lower rating solid-state (SS) direct current circuit breakers (DCCBs). The performance of the SS DCCBs and the proposed method are studied using real-time digital simulator.
机译：近年来，电压源转换器（VSC）的总体性能有所提高。 VSC的改进以及基于晶闸管的HVdc传输系统的基于VSC的高压直流（HVdc）传输系统的吸引人的功能，使得构建多端VSC HVdc传输系统成为可能。但是，VSC容易遭受直流侧故障，因此需要采用一种方法来中断直流故障电流。本文研究了用于保护目的的三种不同配置的固态直流断路器（CB）。此外，提出了一种保护VSC不受直流侧故障的新控制方法。通过新方法，可以使用交流侧的现有交流断路器或额定值较低的固态（SS）直流断路器（DCCB）中断直流故障电流。使用实时数字仿真器研究了SS DCCB的性能和所提出的方法。

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