摘要
为更好地指导开展南方电网直流融冰装置开路试验,研究了开路试验直流电压形成机理、交直流侧电压谐波特性、阀导通瞬间冲击电流、阀电压特性及阀关断状态电压上升率、开路电压控制功能和开路试验保护功能等,并推导出开路试验阀关断状态电压上升率计算公式。此外,介绍了桂林直流融冰装置、独山直流融冰装置和黎平直流融冰装置的开路试验功能和现场开路试验情况。
In order to guide the open line test（ OLT） of DC de-icer device in China Southern Power Grid（ CSG）,a deep research has been done on OLT in this paper,including OLT DC voltage formation,harmonic characteristics both in AC and DC sides,impulse current when valve turning on,valve voltage characteristics and its rising rate when valve turning off,OLT voltage control function and OLT protection,and a formula is deduced to calculate the valve voltage rising rate when valve turning off. Moreover,the OLT control function and the practical OLT in Guilin,Dushan and Liping are introduced.
出处
《南方电网技术》
2014年第4期27-32,共6页
Southern Power System Technology
