在电弧炉应用中，传统statcom和储能statcom的性能分析

2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC) Pub Date : 2013-05-27 DOI:10.1109/APEC.2013.6520514

A. Virtanen, H. Tuusa, J. Aho

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引用次数: 7

摘要

本文分析了2.1 MVA的传统statcom和储能statcom在电弧炉中的性能和功率损耗。利用Matlab Simulink软件进行了计算机仿真。根据仿真结果，负载补偿使供电电网变压器和电缆所需的额定电流降低了约30%，参考点(RP)电压的最大降幅为2%，而非补偿情况下的降幅为15%。传统的STATCOM对RP电压闪变的衰减系数为5.9，而ESTATCOM对RP电压闪变的衰减系数为11.7。尽管ESTATCOM具有有功功率补偿能力，但两个补偿器的电压源变换器(VSC)可以设计为相同的额定电流。当使用3级VSC代替2级VSC时，系统损耗最小，并且补偿装置连接到所研究的最低网络电压690v。当储能系统使用两个独立的dc / dc变换器而不是大型的单个变换器连接到直流链路时，储能系统的损耗最小。这是因为系统转换器可以用最低额定电压的igbt来实现。

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 conventional STATCOMs and STATCOMs with energy storage in electric arc furnace applications

This paper analyzes the performance and power losses of 2.1 MVA conventional STATCOMs and STATCOMs with energy storage (ESTATCOM), in electric arc furnace applications. The research was conducted by computer simulations with Matlab Simulink software. According to the simulation results load compensation reduces the required current rating of the supply grid transformer and cables by approximately 30 %, and the maximum drop of the reference point (RP) voltage to 2 % compared to 15 % caused by the non-compensated case. The conventional STATCOM attenuates the RP voltage flicker by a factor of 5.9 and the ESTATCOM by a factor of 11.7. The voltage source converters (VSC) of both compensators could be designed for the same rated current, despite the active power compensation capabilities of the ESTATCOM. The system losses are minimized when a 3-level VSC is used instead of a 2-level VSC, and the compensating device is connected to the lowest studied network voltage of 690 V. The energy storage system losses are minimized when the energy storage is connected to the dc link using two separate DC/DC converters instead of a large single converter. This occurs because the system converters can be implemented with IGBTs of lowest rated voltage.

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2013 Twenty-Eighth Annual IEEE Applied Power Electronics Conference and Exposition (APEC)

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