高压直流输电混合级联多电平变换器性能分析

2016 Fifth International Conference on Eco-friendly Computing and Communication Systems (ICECCS) Pub Date : 2016-12-01 DOI:10.1109/ECO-FRIENDLY.2016.7893237

M. Bhise, Vivek Ahire

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引用次数: 0

摘要

高压直流输电系统处理大量的电力，因此对这些系统的保护是非常重要的。本文介绍了一种具有直流故障阻断能力的新型电压源变换器——混合级联多电平变换器。该变换器具有在直流故障时，不需要交流断路器的作用，防止任何不受控制的故障电流从交流侧流向直流侧的能力。这一特点阻止了交流和直流侧的电力交换，并可能消除直流断路器的需要。变换器具有多电平变换器的各种特性，并且能够在扩展的调制指数范围内工作，不受负载功率因数的影响。介绍了混合级联多电平变换器的直流故障阻断能力。通过广泛的MATLAB仿真，对系统故障前和故障时的性能进行了检测。

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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Performance analysis of hybrid cascaded multilevel converter for HVDC transmission

HVDC transmission systems deals with bulk amount of power, therefore protection of these systems is highly important. This paper presents newly introduced voltage source converter with DC fault blocking capability, called hybrid cascaded multilevel converter. This converter has ability to prevent any uncontrolled fault current to flow from AC to DC side during DC faults, without the action of AC circuit breaker. This feature blocks power exchange between AC and DC side and may eliminate need of DC circuit breaker. Converter provides various features of multilevel converter and is able to operate over an extended modulation index range, independent of load power factor. This paper presents DC fault blocking capability of hybrid cascaded multilevel converter. System performance before fault and during fault is examined through extensive MATLAB simulation.

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2016 Fifth International Conference on Eco-friendly Computing and Communication Systems (ICECCS)

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