摘要
笔者对GIS局部放电与等效脉冲注入过程中的特高频信号一致性进行了试验研究。通过测量等效脉冲注入和局部放电信号的电磁波波形,发现传感器耦合到的特高频信号波形相似;在相同试验条件下,局部放电信号与等效脉冲注入产生的特高频信号衰减规律和传播范围相同。试验结果表明,局部放电与等效脉冲注入过程中产生的特高频信号一致性很好。在此基础上,通过建立等效脉冲幅值与局部放电量之间的对应关系,可用于GIS局部放电特高频在线监测装置现场校验。
This paper proposed to adopt a method called Equivalent Pulse Injection （EPI）to fix the criterion and conducted an investigation into the consistency of UHF signals produced by the GIS PD and the process of EPI. By measuring the waveforms of electromagnetic waves of EPI and real GIS PD,it is found that the pulse signals waveforms coupled by the UHF sensor are accordant. Under the same research conditions, the signal attenuation characteristic of real PD and the EPI injection show high consistency and they have a same available measure range. The research results show that EPI method and real PD signal measure are very consistent,so the EPI can be adopted to fix the criterion of UHF signal on-line monitoring of GIS PD on the spot.
出处
《高压电器》
CAS
CSCD
北大核心
2013年第11期99-103,共5页
High Voltage Apparatus
关键词
GIS
局部放电
特高频检测
等效脉冲注入法
GIS
partial discharge
ultra-high frequency （UHF） monitoring
equivalent pulse injection
