大朝山电厂励磁系统过电压及保护配置阐述

Elaboration of Overvoltage and Protection Configuration for Excitation System of Dachaoshan Power Plant

国内外曾出现过多起因励磁系统故障而引起发电机转子回路产生过电压,造成转子绕组绝缘被击穿,烧毁转子或励磁系统其他附属设备的恶性事件,安装多种类多原理的过电压保护、稳定响应的灭磁装置,已成为保证大中型发电机组安全可靠运行不可或缺的解决办法。因此对大朝山电厂励磁系统可能产生过电压的因素和应对过电压的保护配置情况进行介绍。

Appeared too much at home and abroad caused by excitation system of generator rotor over voltage circuit,rotor winding insulation breakdown,caused by burning the rotor or other auxiliary equipment of malignant events,excitation system installed more variety principle of over voltage protection,stable response of magnetic device,has become indispensable to ensuring safe and reliable operation of the large and medium-sized generator set solutions. This paper introduces the factors that may cause overvoltage in the excitation system of our plant and the protection configuration against overvoltage.