轻型高压直流输电系统的动态建模及非线性解耦控制  

Dynamic Modeling and Nonlinear-Decouple Control of HVDC Light System

作　　者：严干贵[1] 陈涛[1] 穆钢[1] 刘文华[2] 李军徽[1] 黄亚峰[1] 

机构地区：[1]东北电力大学电气工程学院,吉林省吉林市132012 [2]清华大学电机工程与应用电子技术系,北京市海淀区100084

出　　处：《电网技术》2007年第6期45-50,共6页Power System Technology

摘　　要：轻型高压直流输电是基于脉宽调制电压源型换流器的新一代直流输电,具有功率控制灵活、可向有源和无源网络输电、产生的谐波含量小等优点。建立了基于同步旋转坐标系下的轻型高压直流输电系统的动态模型,采用反馈线性化方法设计了非线性解耦控制器,实现输送有功、无功功率的独立控制。应用电磁暂态仿真软件PSCAD/EMTDC对轻型直流输电系统的功率调节控制原理进行了仿真分析,对模型和控制器的有效性进行了多角度验证。HVDC light is a new generatioa of HVDC power transmission based on PWM controlled voltage source converter （VSC） and possesses following advantages; flexible power control, capability of transmitting power to active and passive network as well as lower harmonics amount, etc. The authors establish a dynamic model of HVDC light system under synchronous rotating coordinate system, design a nonlinear decouple controller and realize individual control for active and reactive power transmission. By means of electromagnetic simulation software PSCAD/EMTDC, the principle of power control is analyzed, and the effectiveness of the established model and designed controller are validated in different standpoints.

关 键 词：电压源型换流器(VSC) 轻型高压直流输电 反馈线性化 非线性解耦控制 输配电工程 

分 类 号：TM731[电气工程—电力系统及自动化]