Synthetic return circuit arc voltage on -line measuring system of relevant 126kV

• Main Authors: HOU YUFEI, LIU ZHIYUAN, FAN JIE, ZHAI XIAOSHE, LUO SHICONG
• Format: Patent
• Language: English
• Published: 06.01.2016
• Subjects: MEASURING; MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES; PHYSICS; TESTING

The utility model relates to a high voltage circuit breaker's heavy current cut -offs experimental technical field, is a synthetic return circuit arc voltage on -line measuring system of relevant 126kV particularly, including casing and circuit board, host computer and power, be equipped with leading measuring voltage divider on this system circuit board, signal conditioning amplitude limiting filter circuit, isolating amplifier circuit, the data acquisition unit, the triggering signal circuit, the data acquisition unit is through fine host computer wave form signal display and the data signal processing unit of connecting of digital actinic light, the input of data acquisition unit is equipped with the triggering signal circuit, carry out the conversion of AD sampling machine, the signal input part of leading measurement divider is equipped with and controls the sensor. The utility model discloses a separate unit divider floating potential measuring method has reduced the hardware requirement to divider common mode rejection ratio, has provided the novel software potentiometer method of an inner conductor pressure drop simultaneously, has eliminated the additional pressure drop of galvanic circle in the arc voltage measurement process, makes measuring arc voltage more accurate.