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Voltage sensitivity based reactive power control on VSC-HVDC in a wind farm connected hybrid multi-infeed HVDC system

机译:基于电压灵敏度基于VSC-HVDC在风电场连接混合式混合多馈HVDC系统中的无功功率控制

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With increasing application of both Line Commutated Converter based High Voltage Direct Current (LCC-HVDC) systems and Voltage Source Converter based HVDC (VSC-HVDC) links, a new type of system structure named Hybrid Multi-Infeed HVDC (HMIDC) system is formed in the modern power systems. This paper presents the operation and control method of the wind farm connected HMIDC system. The wind power fluctuation takes large influence to the system voltages. In order to reduce the voltage fluctuation of LCC-HVDC infeed bus caused by the wind power variation, a voltage sensitivity-based reactive power control method is proposed in the paper. According to the calculated sensitivity factors, a reactive power increment is added in the control loop of VSC-HVDC so as to regulate the voltage of the target bus. Dynamic simulations in PSCAD/EMTDC and MATLAB are presented to assess the performance of the proposed control method.
机译:随着基于线路换向转换器的高压直流(LCC-HVDC)系统和基于电压源转换器的HVDC(VSC-HVDC)链路的应用,形成了一种名为Hybrid Multi-Ifeef HVDC(HMIDC)系统的新型系统结构在现代电力系统中。本文介绍了风电场连接的HMIDC系统的操作和控制方法。风电波动对系统电压影响大量影响。为了降低由风电变化引起的LCC-HVDC进料总线的电压波动,纸张中提出了一种基于电压灵敏度的无功功率控制方法。根据计算出的灵敏度因子,在VSC-HVDC的控制回路中添加了无功功率增量,以便调节目标总线的电压。提出了PSCAD / EMTDC和MATLAB中的动态模拟,以评估所提出的控制方法的性能。

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