Research and application of power quality on-line monitoring system for underground coal mine based on ICVM
In order to realize the real-time monitoring,measurement,analysis and comprehensive evaluation of the power quality of underground electrical equipment in coal mine,an explosion-proof underground power quality monitoring system was proposed based on current and voltage sensing system,the isolated current/voltage sensing unit,high-precision ADC unit and system control hardware system were developed,the electrical explosion-proof design was carried out,and the on-line monitoring platform of mine power quality was constructed.According to field test result in underground 10 kV,6 kV,3.3 kV mining mobile substation,this monitoring system can effectively monitor harmonic voltage,current and power on-line,and generate monitoring data statistical graphics and statistical curves,accurately reflect the operation level of coal mine underground power grid and provide basis for managers'investment decision-making.
power qualityon-line monitoringexplosion proof typeharmonic
NETL
NSTL
万方数据
