高压直流电网保护中MMC与混合直流断路器配合分析

2020 4th International Conference on Electronics, Communication and Aerospace Technology (ICECA) Pub Date : 2020-11-05 DOI:10.1109/ICECA49313.2020.9297443

Tejas S. Gaidhani, Mohan P. Thakre

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引用次数: 3

摘要

高压直流电网保护策略具有广泛的研究范围。抑制直流故障电流的方法有很多。本文采用模块化多电平变换器(MMCs)进行研究。在这种方法中，dccb暂时绕过MMC子模块。当dccb故障被隔离后，mmc将保持正常状态。在这种情况下，观察到两种行为，它们是MMC阻塞和无纠正行为。采用了故障检测与区分算法，并观察了故障检测与区分算法对mmc通过的影响。仿真结果表明，mmc与dccb的同步可以显著降低直流故障电流。

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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Analysis of MMC Coordination with Hybrid DC Breakers for HVDC Grid Protection

High-voltage direct-current (HVDC) grid protection strategy has a broad research scope. Many approaches were developed during restrain DC fault currents. The modular Multilevel Converters (MMCs) are used in the proposed research work. In this method, DCCBs is temporarily by-passed at MMC sub-modules. When the fault is isolated at DCCBs, MMCs will remain at normal state. In this, two actions are observed, they are MMC blocking and no corrective action. A fault algorithm detection & distinction is being used and their effect forth M MC by-passage is observed. Results of simulation show that synchronization of MMCs & DCCBs significantly decreases current of dc fault.

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2020 4th International Conference on Electronics, Communication and Aerospace Technology (ICECA)

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