摘要
电压源换流器高压直流输电技术具有非常广阔的应用领域,在许多应用领域还有待于深入地研究。文中简介了VSC的工作原理,建立了VSC-HVDC系统的稳态数学模型,根据该数学模型推导出VSC-HVDC系统传输功率控制中控制量与被控量的直接对应关系,论述了VSC-HVDC系统传输功率的控制方式,在PSCAD仿真模型中整流侧选择定直流电流控制和定无功功率控制,逆变侧选择定直流电压控制和定无功功率控制的传输功率控制方式。仿真结果验证了文章建立的VSC-HVDC系统稳态数学模型的正确性、传输功率控制中控制量与被控量对应关系的合理性、选择的传输功率控制方式的正确性。
VSC-HVDC technology has very broad application fields, has yet to be in-depth researched in many fields of application. The article introduces the working principle of VSC, establishes the steady-state mathematical model for VSC- HVDC system, according to the mathematical model deduces the direct correspondence between control measure and controlled measure in VSC-HVDC power control. The article discusses the transmission power control ways of VSC-HVDC system. Rectifier side in the PSCAD simulation model chooses the fixed dc current control and the fixed reactive power control, and inverter side chooses the fixed de voltage control and the fixed reactive power control, which is the way of transmission power control. Simulation results verify the correctness of the steady state mathematical model of VSC-HVDC system established in the article, the rationality between control measure and controlled measure in transmission power control and the way of transmission power control used in the article are correct.
出处
《电子设计工程》
2014年第16期128-131,共4页
Electronic Design Engineering
