基于VSG的HVDC逆变侧MMC的控制技术研究
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摘要
采用基于高压直流输电逆变侧模块化多电平换流器(Modual Multilevel Conveter,MMC)的虚拟同步发电机控制方法,使得直流输电系统逆变侧变换器能够模拟同步发电机运行,为交流电网提供惯性和阻尼.建立了虚拟同步发电机的电气及机械模型,仿真实现了虚拟同步发电机控制在MMC上的控制方法.仿真结果表明,直流输电系统逆变侧MMC采用虚拟同步发电机(Virtual Synchronous Generator,VSG)控制技术,能够提供一定的惯性和阻尼,较好地实现对交流系统的有功-频率控制和无功-电压控制.
The method of VSG-based MMC control technology of HVDC inverse side is presented in the paper, and it can provide inertia and damping for AC grids by making the transformer of HVDC inverse side simulate the synchronous generator operation. The electric and mechanical models of synchronous generator are established. The MMC control method is emulated and the results demonstrate that this method can provide inertia and damping to some extent, which can fulfill the control of active-power-frequency and reactive-power-voltage.
The method of VSG-based MMC control technology of HVDC inverse side is presented in the paper, and it can provide inertia and damping for AC grids by making the transformer of HVDC inverse side simulate the synchronous generator operation. The electric and mechanical models of synchronous generator are established. The MMC control method is emulated and the results demonstrate that this method can provide inertia and damping to some extent, which can fulfill the control of active-power-frequency and reactive-power-voltage.
引文
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[12] AOUINI R, MARINESCU B, KILANI B K, et al. Improvement of transient stability in an AC/DC system with synchronverter based HVDC[C]. Mahdia:IEEE 12th International Multi-Conference on Systems, Signals&Devices(SSD15), 2015:1-6.
[13] AOUINI R, MARINESCU B, KILANI B K, et al. Stability improvement of the interconnection of weak AC zones by synchronverter-based HVDC link[J]. Electric Power Systems Research, 2017, 14(2):112-124.
[2]汤广福,贺之渊,庞辉.柔性直流输电工程技术研究、应用及发展[J].电力系统自动化,2013(15):3-14.
[3]唐旭.模块化多电平VSC-HVDC系统建模及控制策略研究[D].沈阳:沈阳工业大学,2017.
[4]杨晓峰.模块组合多电平变换器(MMC)研究[D].北京:北京交通大学,2012.
[5] LI C, XU J, ZHAO C. A Coherency-Based Equivalence Method for MMC Inverters Using Virtual Synchronous Generator Contro[lJ].IEEE Transactions on Power Delivery, 2016, 31(3):1369-1378.
[6]李鹏鹏.模块化多电平变换器的调制策略研究[D].淮南:安徽理工大学,2014.
[7]许建中,李承昱,熊岩,等.模块化多电平换流器高效建模方法研究综述[J].中国电机工程学报,2015,35(13):3381-3392.
[8]彭斌,沈征,帅智康,等.虚拟同步控制在MMC-HVDC无缝切换控制的应用[J].电力系统及其自动化学报,2016,28(11):88-94.
[9]乔卫东,毛颖科.上海柔性直流输电示范工程综述[J].华东电力,2011,39(7):1137-1140.
[10]唐旭.模块化多电平VSC-HVDC系统建模及控制策略研究[D].沈阳:沈阳工业大学,2017.
[11] RAJAN E, AMRUTHA S. Synchronverter based HVDC transmission[C]. Vellore:2017 Innovations in Power and Advanced Computing Technologies(i-PACT), 2017:1-6.
[12] AOUINI R, MARINESCU B, KILANI B K, et al. Improvement of transient stability in an AC/DC system with synchronverter based HVDC[C]. Mahdia:IEEE 12th International Multi-Conference on Systems, Signals&Devices(SSD15), 2015:1-6.
[13] AOUINI R, MARINESCU B, KILANI B K, et al. Stability improvement of the interconnection of weak AC zones by synchronverter-based HVDC link[J]. Electric Power Systems Research, 2017, 14(2):112-124.