W-PD8 Partial Discharges Monitoring System
W-PD8 GIS partial discharge on-line monitoring device for detection of SF6 gas insulated combination appliances (GIS) inside the equipment of partial discharge, high frequency signals from the GIS, avoid inside the equipment caused by sudden accident of partial discharge, W-PD8 partial discharge, high frequency on-line monitoring system uses a current of various kinds of advanced partial discharge detection and diagnosis technology, such as the high frequency signal detection sensors, UHF technology, local device of sensor technology and special optimum arrangement of diagnostic software can be used for GIS in partial discharge and noise signal automatic identification. Sensor type system diversity, W-PD8 partial discharge online device can form a complete set with built-in and the outer fixed, mobile sensor, user can choose according to the site equipment condition installation points or replace installation points, the installation is simple and convenient.
• Based on FPGA digital signal processing
• The setting digital filter (low/high globe)
• Embedded RTOS computer
• Instant big dynamic measurement bureau put
• PD phase error influence by automatic exit
• PD charge, PD frequency, PD current also measured parameters
• Built-in miscellaneous signal suppression function
• Waterproof, shock, suitable for outdoor use
• PD graphic recognition
• PD measurement frequency 10 ~ 2000 KHz
• Channel 4 to 8, use the TNC connectors
• TCP/IP interface support
• 50/60Hz precision: 0.3 degree
• Pulse repetition frequency: 50 KHz
• PD signal resolution, two poles 12 bit PD
• Class IP65 standards, with industrial protection
• Power supply: 100 ~ 240 VAC 50/60 Hz <25 W
• Working temperature:-20 to 50 degrees Celsius
• The system is fully compatible with the PN5000 system
• The simulation configuration man-machine interface
• According to user needs to customize (optional)
• Comprehensive transverse comparison function
The free particle is GIS internal higher rates of insulation fault line of metal particles move led to the destruction of the insulation, in damage has occurred before the insulation partial discharge.
Point discharge is the internal high-pressure conductor or shell is formed within the tip of the prominent place of discharge, GIS happened in operation, grounding switch, breaker and isolating switch contact part of the action will probably happen.
This should be fully adhere to the high pressure of the conductor of electricity from a high pressure conductor fall off, easing floating electrode, fall off form part of the high pressure conductor and grounding potential than gas insulated endurance, and repeat the nC discharge, and produce noise discharge.
The defect of the insulation parts is the internal production GIS in insulation parts or assembly process, happen internal stomatal or cracked or surface damage or pollution happened. At the same time produce partial discharge phenomenon.
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Partial Discharges Monitoring System 
