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发明授权
CN106911132B 基于MMC的分布式潮流控制器的控制系统及建模方法 有权

基于MMC的分布式潮流控制器的控制系统及建模方法
摘要：
本发明公开了一种基于MMC的分布式潮流控制器的电磁暂态数学模型、控制系统及建模方法，分布式潮流控制器包括由并联侧基于MMC的三相变流器与并联侧单相变流器组成的并联侧变流器，以及由多组串联侧单相变流器构成的串联侧变流器；电磁暂态数学模型主要包括并联侧变流器模型和串联侧变流器模型；控制系统包括并联侧控制模型和串联侧控制模型，并联侧控制模型包括并联侧基于MMC的三相变流器控制模块和并联侧单相变流器控制模块，串联侧控制模型包括串联侧三次谐波控制模块和串联变流器有功功率无功功率控制模块。本发明电磁暂态数学模型采用模块化设计，降低子模块开关频率，降低损耗；控制系统适应不同电压等级，适用于柔性交流输电场合。
摘要（英）：

The invention discloses an electromagnetic transient mathematical model of a distributed power-flow controller based on an MMC, control system and a modeling method. The distributed power-flow controller comprises a parallel connection side converter composed of a three-phase converter based on the MMC at the parallel connection side and a parallel connection side single-phase converter and a series connection side converter composed of multiple sets of series connection side single-phase converter; the electromagnetic transient mathematical model mainly comprises a parallel connection side converter model and a series connection side converter model; the control system comprises a parallel connection side control model and a series connection side control model, the parallel connection side control model comprises a three-phase converter control module based on the MMC at the parallel connection side and a parallel connection side single-phase converter module, and the series connection side control model comprises a series connection side third harmonic control module and a series connection converter active power reactive power control module. The electromagnetic transient mathematical model is designed by adopting modularization, the sub module switch-on and switch-off frequency is lowered, and the loss is lowered; the control system adapts to different voltage grades, and is applicable to flexible alternating current transmission occasions.

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