蔡普成;向往;彭红英;穆清;文劲宇;

• 1:强电磁工程与新技术国家重点实验室(华中科技大学)
• 2:中国电力科学研究院有限公司

摘要(Abstract)：

基于模块化多电平换流器的背靠背柔性直流输电系统(back to back modular multilevel converter based high voltage directcurrent,Back-to-BackMMC-HVDC)可实现区域电网的异步互联,提高电网可靠性。为更好地研究背靠背MMCHVDC接入后的交直流系统互耦特性,需建立兼顾区域电网仿真效率与精确模拟MMC-HVDC系统动态特性的交直流混合模型。研究了MMC-HVDC运行原理与控制策略,基于电力系统全数字仿真装置(advanceddigitalpowersystem simulator,ADPSS)搭建含背靠背MMC-HVDC系统的交直流电网机电-电磁混合模型。通过仿真对比,验证了上述MMC-HVDC电磁暂态模型及其控制系统的正确性;基于混合模型进行了交直流电网机电-电磁混合仿真研究,并与对交流大电网进行等值简化后的纯电磁模型进行对比分析。结果表明,与将交流电网等效为理想电压源加等值阻抗的纯电磁暂态模型相比,混合仿真模型可更好地体现交流系统特性,更贴近实际工程,为研究交直流互联电网提供了较好的参考。

关键词(KeyWords)： 交直流电网;模块化多电平换流器;电力系统全数字仿真装置;机电暂态模型;电磁暂态模型;混合仿真

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 蔡普成;向往;彭红英;穆清;文劲宇;

Email:

DOI: 10.13335/j.1000-3673.pst.2018.1781

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