串联补偿装置中金属氧化物可变电阻的应用

基于阳城到江苏送电工程 ,介绍了金属氧化物可变电阻在串联补偿装置中的应用 ,串补装置的动作过程及 MOV的技术条件 ,并根据华东系统实际情况进行了计算研究。结果表明 ,在目前的系统条件下 ,阳东线及部分的东三线上发生故障时串补装置的间隙不动作。在靠近三堡侧的大部分东三线上发生故障时 ,间隙必须可靠击穿 ,以保护 MOV不至于过热而损坏。现场试验也验证了理论计算结果。

The Application of Metal Oxide Varistors in Fixed Series Compensation Equipment

An introduction to the application of fixed compensation equipment is presented,based on Yangcheng to Jiangsu transmission system.The trigger principle and parameter of MOV is described.And study and calculation according to the configuration of Eastern China electrical system is described.The results show that under the practical system condition of Eastern China,if grounding faults occur in Yangdong transmission line and part of Dongsan transmission line,gaps would not be triggered.If faults occur in the part of Dongsan transmission line which is near Sanpu station,the gaps must be triggered to protect MOV from overheat damage.These results had been validated on site test.