自动准同期系统纳入DCS的应用研究

STUDY ON APPLICATION OF AUTOMATIC QUASI-SYNCHRONOUS SYSTEM BEING BROUGHT INTO DCS

介绍了华能海口电厂8号330 MW机组自动准同期系统纳入DCS构成内置式自动准同期系统的结构、控制逻辑、操作、试验以及应用情况。与传统的专用同期装置比较表明,DCS内置式自动同期系统具有外部电缆少、设备投资和安装工作量小等优点,但存在输出指令脉冲宽度不可调节及频率差和电压差设置包含负值的缺陷。

The structure, control logic, operation, test, and application situation of an inner - positioned automatic quasi - synchronous system used for 330 MW unit no. 8 in Huaneng Haikou Power Plant, which is constructed by bringing the automatic quasisynchronous system into DCS,have been presented. A comparison with the traditional single - purpose synchronous system shows that the inner - positioned synchronous system in DCS has advantages of few external cables,small investment for equipments,and little amount of installine works etc. ,but it has shortcomings of non- adjustable pulse width for output commands, and negative values are included in settings of frequence difference and voltage difference.