检测高压电缆附件局部放电用超高频蝶形天线的研究

Study of the UHF Bowtie Antenna Used for Partial Discharge in HV Cable Accessories

针对电缆附件的结构及附件内部易发生绝缘故障导致局部放电的特点,设计了用于电缆附件局部放电信号检测的内置超高频超宽带蝶形天线传感器.仿真和实测表明,该蝶形天线的有效工作频带为350～585MHz.模拟实验表明该天线传感器灵敏度高、性能优越,能在有效频率范围内检测到局部放电信号,可以用于电缆附件局部放电超高频信号的检测.

Considering cable accessories structure and the characteristic that insulation failure easily oc- curs in internal attachment resulting in partial discharge, this paper designed a built-in UHF and UWB bowtie antennas sensor to detect partial discharge signal for cable accessories. Simulation results show that the effective bandwidth of the antenna is 350～585 MHz. sensor has high sensitivity and superior performance, and can be applied to PD UHF signal detection of ca-ble accessories.