【作者】 李金丰；

【导师】 赵成勇；

【作者基本信息】 华北电力大学（河北） ， 电力系统及其自动化， 2005， 硕士

【摘要】 VSC-HVDC 已经在电力系统中得到一些应用,但是在理论研究以及实际应用中仍然存在很多需要解决的问题。该文研究了VSC 传输功率控制、基于有功功率和无功功率独立调节的VSC-HVDC 系统运行控制策略、三相电压不对称时VSC-HVDC 系统的控制策略以及基于LabVIEW 的VSC-HVDC 控制系统软件设计。在VSC 稳态模型的基础上,通过坐标变换,推导出了VSC 功率传输方程的直角坐标形式;采用逆系统方法设计了VSC 传输功率独立控制系统以及基于有功功率、无功功率独立调节的VSC-HVDC控制系统;根据瞬时功率理论,分析了三相电压不对称时,VSC 的功率传输特性,采用不对称触发方法有效地消除了传输有功功率的波动;最后,设计了基于LabVIEW 的VSC-HVDC 控制系统软件。更多还原

【Abstract】 VSC-HVDC has been put into practice, but there are still many problems on it to be solved in theory and in practice. This thesis mainly studies VSC’s translating power control, control strategy for VSC-HVDC system based on active and reactive power adjusted respectively, control strategy for VSC-HVDC system under asymmerical voltage and the design of VSC-HVDC control software based on LabVIEW. Based on the steady state model of VSC, the rectangular coordinate form of VSC’s power transmitting equations is deduced through coordinate conversion. The VSC translating power control system and VSC-HVDC control system based on active and reactive power adjusted respectively are designed with inverse system nonlinear control. According to instantaneous power theory, the power characteristic of VSC under asymmerical voltage is analysed. The fluctuation of active power is eliminated with asymmetrical control scheme. At last the VSC-HVDC control software is designed with LabVIEW.更多还原