DC A device for measuring the operating state of the high voltage circuit breaker by measuring the operating voltage and current of the high voltage circuit breaker and calculating the impedance of the backup battery power source

摘要

A large number of high voltage circuit breakers are installed in Korea electric power corporation and railway substations or a large building receiving power of high voltage and a substation of a factory. The high voltage circuit breakers need to be put if necessary, or operated for a rated time during a trip, and to normally operate the high voltage circuit breakers, a DC-DC charger needs to be normally operated. To test whether a high voltage circuit breaker installed in a substation and a DC storage battery power are normal, a target device to be tested is separated from a load, and a portable high voltage circuit breaker analyzer is installed. Also, a professional technician tests a state of a DC storage battery power by installing a portable high voltage circuit breaker analyzer or using a portable DC storage battery tester, which requires much costs and time, and can be hardly applied to a real spot. To solve the problems, the present invention is connected to a main apparatus to measure a temporarily reduced voltage and a temporarily increased current when a high voltage circuit breaker is put and tripped, thereby measuring a waveform, calculating impedance of a DC power in the detected reduced voltage and increased current in real time, and allowing a measured value and an analyzed value to be automatically transmitted to a previously input e-mail address to frequently check a state of a high voltage circuit breaker and a DC storage battery power. Thus, reliability of related facilities is improved.