An equivalent sub-module model for modular multilevel converter in RTDS

被引：0

作者：

机构：

[1] State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources, North China Electric Power University

[2] Xi'an XD Power Systems Co. Ltd.

来源：

Liu, C. (chongru.liu@ncepu.edu.cn) | 1600年 / Automation of Electric Power Systems Press卷 / 37期

关键词：

CBuilder; Control and protection; Direct current transmission; Real time simulation; Sub-module faults;

D O I：

10.7500/AEPS201210120

中图分类号：

学科分类号：

摘要：

Modular multilevel converter (MMC) is one of the most promising direct current transmission modes. There are lots of sub-modules (SM) in series in MMC high-voltage direct-current (MMC-HVDC) transmission system. It is a challenge to model MMC-HVDC system in real-time simulation tools. Furthermore, the existing MMC component in real time digital simulator (RTDS) cannot be used for SM faults. The rtds_SM component is proposed. It is developed by CBuilder in RTDS. The component can not only reduce memory usage in RTDS, but also be used for the sub-module fault and the test of control and protection devices for MMC system in RTDS. The insulated gate bipolar transistor (IGBT), antiparallel-connected diode and capacitor are modeled; the bypass switch and thyristor models are realized for control and protection. The developed rtds_SM component has eight inputs and two outputs, which can response for various operation states under various conditions. It can also provide the information for capacitor voltage balancing. Simulation results show that the proposed rtds_SM component needs less memory usage and provides high enough simulation precision. © 2013 State Grid Electric Power Research Institute Press.

引用

页码：92 / 99

页数：7

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