摘要
直流输电的核心是自换相电压源换流器,采用复杂可编程逻辑器(CPLD)和数字信号处理器(DSP)构成一个轻型直流输电动模室换流控制器。介绍了由自换相电压源换流器、换流电抗器、直流传输线和交流滤波器4个主要部分组成的轻型直流输电系统结构,在此结构上,根据直流输电的控制原理给出了基本控制策略:一端采用定直流电压控制有功,另一端采用定直流电流控制有功。详细分析了DSP和CPLD在换流控制器中的作用:DSP负责数据的采集和系统控制;CPLD则负责脉宽调制(PWM)波的产生和A/D转换器的逻辑控制。结果表明:换流控制器的实时性和稳定性得到了大幅度提高。
As VSC （Voltage Source Converter） is the core of HVDC （High Voltage Direct Current transmission） ,CPLD and DSP are used to build up the converting controller of VSC for a HVDC -Light simulation lab. The HVDC system is composed of VSC,reactor,transmission line and AC filter, for which the basic control strategy is based on the HVDC-Light control theory：fixed voltage at one end and fixed current at the other end are adopted to control the active power. Functions of CPLD and DSP are analyzed：DSP is responsible for data collection and system control while CPLD for PWM generation and logic control of A/D convert. The result shows that the stability and real-time performance of controller are greatly imoroved.
出处
《电力自动化设备》
EI
CSCD
北大核心
2007年第3期86-88,共3页
Electric Power Automation Equipment
