论文部分内容阅读
山西漳泽发电厂210MW发电机型号为TBB2202EY3,该励磁系统控制方式落后,运行不稳定,不能满足DCS系统采集要求,决定对该励磁系统进行国产化改造。本文就原系统的特点及多年运行中存在的故障进行了分析,从原励磁方式不变、自励恒压调节方式的实现、他励调节方式的实现等三个方面提出了设计思路及要求。针对原回路存在缺陷,分别从灭磁电阻和过压保护回路的改进、励磁系统“热切”回路的改进提出了改造方案。经过试验调试,该方案已经成功地应用在4台同型号210MW发电机组上,并且运行稳定、可靠,有很强的推广性。
Shanxi Zhangze Power Plant 210MW generator model TBB2202EY3, the excitation system control mode backward, unstable operation, can not meet the requirements of DCS system acquisition, the decision of the localization of the excitation system transformation. This paper analyzes the characteristics of the original system and the faults existing in the operation for many years, and puts forward the design ideas and requirements from three aspects: the original excitation mode is unchanged, the self-excitation constant voltage adjustment mode is realized, For the original circuit defects, from the demagnetization resistance and overvoltage protection circuit improvement, excitation system “hot” circuit improvement proposed transformation program. After test and commissioning, the program has been successfully applied to 4 sets of the same type of 210MW generator set, and the operation is stable, reliable and has strong promotion.