【摘要】 电力系统中的励磁控制多用微机励磁调节器。介绍了用PLC实现发电机励磁调节功能的一种方法。这种方法以宽度可调的脉冲信号为励磁调节控制信号,反馈信号来自上位机向PLC串口发送的实时数据,避免了使用模拟量模块,所实现的恒无功控制的精度较高,调节时间在规范要求之内。更多还原

【Abstract】 Using a microcomputer excitation device is the most popular way to approach generator excitation control.A method of excitation via PLC is recommended.The control signal is a pluse whose width can be modified,and the feedback signal is gained from upper?computer through a series port of PLC.In fact,the control performance such as control accuracy is satisfying even without analog modules.更多还原