摘要
基于VSC技术的轻型直流输电技术是近年发展起来的一种适用于小功率传输的新型高压直流输电技术。它采用绝缘栅双极晶体管IGBT组成的电压源型换流器(VSC)和基于微机控制的PWM技术控制,运行方式简单,输出波形好。主要研究轻型直流输电系统逆变器的控制技术及其应用,介绍了HVDC Light控制系统的结构及控制原理;在此基础上,设计了一种VSC换流控制器,使用MATLAB建模仿真。仿真结果表明,所设计的控制器灵活、简便、有效,能够很好地控制系统的潮流与稳定,满足各种控制方式的需要。
VSC-based HVDC light applicable to lower power transmission developed in recent years is a new HVDC transmission technology. It adopts voltage source converter （VSC） consisting of insulated gate bipolar transistors （IGBT） and microcomputer control- based PWM control, and has ideal operational characteristics and perfect output waveforms. This paper makes a study of the control technology and application of inverter in light dc transmission system, and introduces the structure and principle of the control system of HVDC Light. Based on which, the paper develops a VSC-based converter controller, and simulates the controller modeling with MATLAB. The simulation results show that the proposed controller is of simple structure and flexible use, can easily control the system load flow and its stability, and meets the needs of various control modes.
出处
《陕西电力》
2012年第10期20-25,共6页
Shanxi Electric Power
基金
国家电网公司大电网重大专项资助项目(SGCCMPLG027-2012)
中央高校基本科研业务费专项基金(WHU2010012070029)
