电工电能新技术
電工電能新技術
전공전능신기술
ADVANCED TECHNOLOGY OF ELECTRICAL ENGINEERING AND ENERGY
2007年
3期
64-67,72
,共5页
optoelectronic high-voltage probe%impulse voltage distribution%voltage divider%converter valve
A high-voltage optoelectronic probe is developed for measuring impulse voltage distribution along thyristor units in the HVDC converter valve. The dimension of the resistive voltage divider is optimized by means of numerical compttation of electric field. A pulse frequency modulation (PFM) mode is adopted for the data transmission link because of its immunity to high-intensity electromagnetic interference. Experimental results indicate that the linearity deviation for the whole measuring system is within ± 0.15 %, and therefore it can meet requirements specified by IEC60700-1.
