A Z-Source-Based Bidirectional DC Circuit Breaker With Fault Current Limitation and Interruption Capabilities
A Z-Source-Based Bidirectional DC Circuit Breaker With Fault Current Limitation and Interruption Capabilities
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DOI：
10.1109/tpel.2016.2624147
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发表时间：
2017-09
影响因子：
6.7
通讯作者：
Davood Keshavarzi;T. Ghanbari;E. Farjah
中科院分区：
文献类型：
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作者：
Davood Keshavarzi;T. Ghanbari;E. Farjah
直流微电网具有一些吸引人的特性，已被研究用于未来的电力系统。然而，它们有几个基本的挑战，如限制和中断故障电流，这应该得到纠正，以拥有高性能的直流微电网。本文提出了一种高效的基于z源拓扑的直流双向故障限流断流器（FCLI），以克服直流微电网中的一些挑战。FCLI是一种多功能装置，可以实现直流系统的潮流方向控制、断路、故障限流和断路等功能。详细讨论了不同运行模式下FCLI的解析分析。通过仿真和实验对所提出的FCLI在不同工作模式下的性能进行了评价。结果表明，该器件具有较高的性能，可以在直流系统中实现适当的运行。故障限流中断响应时间快，结构简单可靠，导通损耗可忽略不计。
DC microgrids have some attractive characteristics, which have being investigated to utilize in future electrical power systems. However, they have several essential challenges, such as limiting and interrupting fault current, which should be rectified to have high-performance dc microgrids. In this paper, an efficient dc bidirectional fault current limiter and interrupter (FCLI) based on Z-source topology is proposed to overcome some of the challenges in dc microgrids. The FCLI is a multifunction device, by which power flow direction control, circuit breaking, fault current limiting, and interrupting in a dc system can be handled. Analytical analysis of the FCLI is discussed in detail for different operation modes. Performance of the proposed FCLI in the different operation modes is evaluated using some simulations and experiments. The results confirm high capability of the device to realize appropriate operation in dc systems. Fast response time of fault current limitation and interruption, simple and reliable structure, and negligible conduction loss are the main features of the proposed FCLI.