Title :
Measurement of very fast voltage rise curve due to gap discharge using coupled transmission lines in distributed constant system
Author :
Kawamata, Ken ; Minegishi, Shigeki ; Haga, Akira ; Sato, Risaburo
Author_Institution :
Dept. of Electr. Eng., Hachinohe Inst. of Technol., Japan
Abstract :
A method for measurement of very fast voltage rise curves due to gap discharge using coupled transmission lines was examined to find the pure voltage transients. The measurement system consists of a distributed constant system, because the voltage transients were very rapid. A characteristic of the gap electrode, which has a matched impedance for the distributed constant system, was investigated in the frequency range below 5 GHz. The voltage of the power source in the experiment was 510 V and 800 V because Paschen´s law holds in air conditions. The measurement method made it possible to observe a rise time of about 100 ps. It was confirmed that the measurement method enables to measure the high speed and high voltage rise curves out of contact with the main circuit
Keywords :
air gaps; circuit-breaking arcs; coaxial cables; directional couplers; electrical contacts; impedance matching; power system transients; voltage measurement; 100 ps; 510 V; 800 V; Paschen´s law; coaxial electrode; coupled transmission lines; directional coupler; distributed constant system; electrical contacts; gap discharge; high voltage rise curves; matched impedance; needle electrodes; pulse response; pure voltage transients; very fast voltage rise curve measurement; Couplings; Electrodes; Frequency; Impedance; Power system transients; Power transmission lines; Time measurement; Transmission line measurements; Velocity measurement; Voltage;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE
Conference_Location :
Brussels
Print_ISBN :
0-7803-3312-8
DOI :
10.1109/IMTC.1996.507323
