自动电压控制(AVC)在DCS中的实现与应用  

Implement and Application of Automatic Voltage Control in DCS

作　　者：彭荣辉 邓剑[2] 肖建文 

机构地区：[1]湘潭发电有限责任公司,湖南湘潭411102 [2]上海交通大学,上海200240 [3]百达建设咨询有限公司,福建厦门361102

出　　处：《华北电力技术》2008年第8期21-24,共4页North China Electric Power

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.

关 键 词：自动电压控制 分散控制系统 远动装置 励磁 

分 类 号：TM714.2[电气工程—电力系统及自动化]