电厂侧子站系统设计

An Integrated Control System of AVC Based on DCS for Thermal Power Unit

对国内现有AVC系统进行研究,提出了一种基于DCS的电厂侧AVC子站系统设计方案,该系统通过PID负反馈控制原理来实现母线电压、无功的串级控制,采用机组无功等比例加偏置的策略进行机组无功分配。针对实际情况,对系统的软硬件系统进行了设计与说明,并详细阐述了系统的工作原理、安全保护策略等方面的问题。

The system is based on PID negative feedback control theory to achieve the bus voltage and reactive power control. In view of the actual situation, the hardware and software design of the system is carried out, and the problems of the system’s working thread, operation mode and the protection of the lock are described in detail.