Partial Discharge Monitoring System for Switchgear
Reason and Locations for Partial Discharge Monitoring in Switchgear
Switchgear partial discharge is an important precursor to aging or damage of switchgear busbar insulation. Contaminants such as moisture and dust can easily cause busbar insulation degradation and produce partial discharge. Symptoms of partial discharge may include the corona effect, traces on the busbar/insulation, or flashover events. If the PD discharge continues to develop, it may cause an insulation breakdown, resulting in a phase-to-phase short circuit or phase-to-ground short circuit, ultimately leading to equipment failure. Therefore, partial discharge monitoring of switchgear busbars can detect insulation defects in time, reduce maintenance costs, and prevent accidents.
The Blue Jay partial discharge monitoring system for switchgear is used to measure and detect partial discharge activity on the discharging component, including the Busbar, MV Switchgear Panel, Isolators, terminations, or connection points (eg. bushing Termination, cable termination, Terminal blocks, and joints of metal parts, etc.), Contact surface, Insulator surface, Insulation material inside, and transformer leads.
Key application of Blue Jay Partial Discharge Monitoring Switchgear
Blue Jay PD monitoring for switchgear is used in different electrical switchgear to protect switchgear components from damage. Here are some key applications that need the partial discharge monitoring system for switchgear.
GIS (Gas Insulated Switchgear): GIS is filled with SF6 gas and has good insulation properties. However, once partial discharge occurs, SF6 gas will decompose to produce corrosive substances, causing serious damage to the equipment. Common partial discharge sites include the surface of insulators, joints of metal parts, and conductor surfaces. Insulators are one of the most prone to partial discharge in GIS, and their surfaces should be monitored.
Oil-immersed switchgear: Oil-immersed switchgear is filled with insulating oil, and the deterioration of insulating oil can cause partial discharge. Common partial discharge sites include bushings, porcelain bottles, and bushings. Bushings are the weak link of oil-immersed switchgear, and their internal and external surfaces should be monitored.
Vacuum switchgear: The partial discharge of vacuum switchgear mainly occurs on the contact surface or insulator surface. The contact surface is the most prone to partial discharge in vacuum switchgear.
Solid insulated switchgear: Solid insulated switchgear uses solid insulating materials, and partial discharge mainly occurs inside or on the surface of solid insulating materials. If there are cracks, dirt, etc. on the surface of the insulator, partial discharge is likely to occur. If there are bubbles, impurities, and other defects inside the insulating material, partial discharge is likely to occur. If there are cracks, dirt, and other defects on the surface of the insulator, partial discharge is likely to occur.
Choose Blue Jay Partial Discharge Monitoring System for Switchgear
With Blue Jay’s partial discharge monitoring system for switchgear, you’re improving your business’s electrical safety. Raise the bar for your partial discharge monitoring experience with Blue Jay. Let’s power up your electrical safety together!
PD3000 partial discharge monitoring system for switchgear
Versatile monitoring principle for different switchgear
Effectively distinguish partial discharge signals from other electromagnetic interference signals
Remote monitoring and long-term recording and storage of PD monitoring data
