高压直流电网控制策略的比较

L. Dewangan, H. Bahirat
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引用次数: 11

摘要

可再生能源资源的整合增加了多端直流(MTDC)系统应用的可能性。本文讨论了电压源变换器(VSC)的一次电平控制及其设计方法。讨论并比较了MTDC系统的直流电压控制、电压裕度控制、下垂控制、直流电压协调控制和分布式控制等控制方案。在PSCAD中对一个基于四终端VSC的MTDC系统进行了建模。比较了直流电网负载阶跃变化和故障情况下控制器的性能。
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Comparison of HVDC grid control strategies
The integration of renewable energy resources has increased possibility of application of multi terminal direct current (MTDC) system. In this paper, the primary level control of voltage source converter (VSC) and their design method is discussed. The control schemes for the MTDC system such as DC voltage control, voltage margin, droop control, coordinated and distributed DC voltage control are discussed and compared. A four terminal VSC based MTDC system is modeled in PSCAD. The performance of the controllers are compared under step load changes and fault on the DC grid.
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