Discussion on Radio Interference Wave Trap Coil for 1000kV UHV Ac-testing Line

To measuring precisely radio interference for 1000 kV UHV ac-testing line,wave trap coil is indispensable.It's uecessary to install the wave trap coil between ac-testing supplies and the ac-testing line for UHVAC application.to prevent the influence of high frequency current in the testing supplies on measurement for the radio interference of the testing line.and provide open circuit state for the end region on the souree side for the testing line.Based on which the results of short testing line are equivalent to the results for actual working line.Radio interference wave trap coil is designed and manufactured for the testing line for UHVAC single-circuit double-circuit transmission line,and its installation scheme is presented.By nearly one year operating. the wave trap coil is in good operation,and provides guarantee for measuring precisely the radio interference.