基于等时间常数的模块化多电平换流器柔直换流阀动模系统设计

发布时间：2018-01-27 15:36

本文关键词： 模块化多电平换流器等时间常数动模系统相似判据　出处：《中国电机工程学报》2016年09期 　论文类型：期刊论文

【摘要】：介绍与电力系统动模仿真密切相关的相似定理及其附加条件,给出相似判据的确定方法,推导用于模块化多电平换流器(modular multilevel converter,MMC)柔直换流阀动模系统设计的相似判据,提出满足过渡过程动态特性相似的用于MMC柔直换流阀动模设计的等时间常数相似判据,为MMC柔直动模系统的最终实现提供必要的理论依据。根据所提等时间常数相似判据,对千兆瓦级MMC柔直动模仿真系统进行了系统设计、参数计算,搭建了完整的动模系统。最后,设计MMC柔直无源逆变及静止同步补偿器(static synchronous compensator,STATCOM)运行的实验方案,并通过相应的动模仿真测试实验,验证了所提基于等时间常数相似判据设计的MMC柔直动模仿真系统的正确性。在相同条件下,建立并完善MMC柔直换流阀的实时数字仿真模型,通过与动模实验结果的对比,证明了所建实时数字仿真模型的有效性,及其在动态过程中与动模系统的差异。
[Abstract]:The simulation model is closely related to the similarity theorem and its additional conditions and power system, given similar methods to determine the criterion, are used for modular multilevel converter (modular multilevel converter, MMC) soft straight moving mode similarity criterion system design flow valve, proposed to meet the dynamic characteristics of the transition process similar to MMC for soft straight moving die design and other similar criterion time constant flow valve, finally realizes the MMC soft straight die system provides a necessary theoretical basis. According to the time constant of similarity criterion, calculation parameters of the system design, the gigawatt level MMC soft model simulation system of moving straight, to build a complete dynamic simulation system finally, the design of soft MMC inverter and static synchronous compensator (static direct passive synchronous compensator, STATCOM) experimental program operation, and through the dynamic simulation tests, verify the proposed etc. The correctness of the time constant of similarity criterion of design of MMC soft direct dynamic simulation system. Under the same conditions, establish and improve the real time digital simulation model of MMC soft straight valve, by comparing with the experimental results, which validates the real-time digital simulation model, and the differences in dynamic process with the dynamic model of the system.

【作者单位】：华北电力大学电气与电子工程学院;国网智能电网研究院;东北电力大学电气工程学院;
【基金】：国家自然科学基金项目(51261130471;51377016;51477027) 国家电网公司科技项目(SGTYHT/14-JS-188);国家电网公司科技发展计划项目((2015)90号文)~~
【分类号】：TM721.1
【正文快照】： 0引言模块化多电平换流器(modular multilevelconverter,MMC)因其拓展性好、谐波特性优异、损耗小等特点,在柔性直流输电领域逐渐成为研究热点,并在实际工程中展现出了广阔的应用前景。高电压大容量的基于MMC的柔性直流输电(high voltage direct current transmission based o

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