摘要
自动电压控制(AVC)是电网安全、优质和经济运行的重要手段。针对现有的无AVC功能的励磁系统,通过分散控制系统(DCS)中的软硬件,接受电网调度能量管理系统(EM S)来的电压指令实现相关的调节逻辑,输出脉冲指令来增减励磁电流,改变发电机无功,从而实现电网自动电压控制。这一方法不仅有效降低电网电压波动幅度和频率,而且简单实用、节约成本,减轻了操作强度。
Automatic Voltage Control （AVC） is an important means for the safety, high quality and economic operation of grid. For the existing excitation system without AVC, through the hardware and software of distributed control system （DCS）, the voltage command from power grid control energy management system （EMS） is accepted to achieve related voltage regulation logic. The output pulse excitation command can increase or decrease current to change reactive power, thus to achieve voltage of generator adjusted automatically. This method not only can lower voltage fluctuation amplitude and frequency, but be simple and practical, cost savings, reducing operating intensity.
出处
《华北电力技术》
CAS
2008年第8期21-24,共4页
North China Electric Power
关键词
自动电压控制
分散控制系统
远动装置
励磁
auto voltage control
distributed control system
remote terminal unit
excitation
