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首页> 外文会议>2014 International Conference on Power System Technology: Towards Green, Efficient and Smart Power System >A study on the control of a hybrid MTDC system supplying a passive network
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A study on the control of a hybrid MTDC system supplying a passive network

机译：提供无源网络的混合MTDC系统的控制研究

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A hybrid Multi-Terminal DC (MTDC) system can combine the benefits of both Line Commutated Converter (LCC) and Voltage Source Converter (VSC) technologies in the form of reduced losses and flexibility to connect to weak and passive grids. In this paper, an analysis of control strategies used in a hybrid MTDC system is presented. A case study of a four terminal hybrid MTDC system supplying a passive AC network was considered for simulation study. A control scheme based on voltage margin was developed to cope with the condition of main DC voltage controlling station tripping. Two various control scenarios for controlling the VSCs connected to the passive network were presented and compared. The system performance was studied through EMTP-RV simulations under different disturbances. The results show the ability of selected converter control modes and proposed control schemes to operate the hybrid MTDC system under different disturbance conditions.
机译：混合多端子DC（MTDC）系统可以以减少损耗和灵活连接弱电网和无源电网的形式，结合线路换流转换器（LCC）和电压源转换器（VSC）技术的优势。在本文中，对混合MTDC系统中使用的控制策略进行了分析。为了进行仿真研究，考虑了一个为无源交流网络供电的四终端混合MTDC系统的案例研究。提出了一种基于电压裕度的控制方案，以应对主直流电压控制站跳闸的情况。提出并比较了两种用于控制连接到无源网络的VSC的控制方案。通过在不同干扰下的EMTP-RV仿真研究了系统性能。结果表明，选择的变流器控制模式和提出的控制方案具有在不同干扰条件下运行混合MTDC系统的能力。

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