The development of maintenance technology of electrical equipment can be roughly divided into three stages, namely fault maintenance, periodic maintenance and status maintenance. As the primary requirement of power system operation, power supply reliability is becoming more and more important. The status maintenance can identify the existing or potential signs of deterioration by measuring the key parameters of the equipment, and evaluate the status of the equipment without shutdown.
The high frequency partial discharge patrol instrument adopts the high frequency current and the ultrasonic wave two kinds of detection methods according to the characteristics of live patrol, its size is small, the performance is excellent, easy to operate. Can be measured for cables, transformers (reactors) and other grounding wires. The system adopts modern electronic and computer integrated technology to realize signal amplification (analog, electronic, digital), filtering, data acquisition, data processing, graphics display, test report automatic generation, so as to complete the measurement and analysis of partial discharge.
The system is mainly composed of the following parts
One high-frequency partial discharge patrol instrument.
One set of charger for main engine
One high frequency current transformer.
One ultrasonic sensor
One cable ultrasonic detector
Two article 50 Ω coaxial cable
One set of wireless synchronous transmitter and power cord.
One card reader.