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《Acta Electronica Sinica》 2017-04
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Fault Location Technology of Passive Inter-Modulation Using Reference Signal

XIE Ya-yun;NIAN Fu-shun;YANG Bao-guo;School of Instrument and Electronics,North University of China;The 41st Institute of China Electronic and Technology Corporation;  
Passive inter-modulation fault location technology based on the reference signal is researched. The technology has one more reference channel than the traditional passive inter-modulation measurement techniques, to provide a reference signal, to demodulate phase response of the inter-modulation signal,while introducing calibration technology in the measurement port to build the reference plane,Obtained Time domain response relative to the reference plane By the timefrequency conversion and effective troubleshooting. Based on this, the fault location test is simulated to prove the validity of theory, and the phase reference board is designed and fabricated, the experimental results and the actual value showed that:Absolute value of the difference between the actual value and the measured value of two fault location on the cables are ≤1m, the actual relative error of approximately 5. 1%, 2. 4%,proves the correctness and feasibility of this approach. The technology will overcome the shortcomings of traditional fault location, adapts to the nasty geographical environment.
【Fund】: 国家重点实验室基金(No.9140C120102130C12049)
【CateGory Index】: TN911.7
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