If you are concerned about the effect that partial discharge (PD) can have on your transformer equipment, RMS Energy can help. With our PD detection and monitoring service, we can help you identify and repair damage caused by partial discharge on your Isolated Phase Bus Duct, and other electrical equipment before serious degradation occurs. In electrical engineering, partial discharge (PD) is known as a localized dielectric breakdown of a small portion of a solid or fluid electrical insulation system under high voltage stress, which does not bridge the space between two conductors. There are many variables when PD begins on your system, but one thing is certain: Once it starts, it will always get worse. In fact, the majority of fires are caused by insulation breakdown, and PD is an early warning that trouble lies ahead. PD most often starts within gas voids, such as those found in bubbles in transformer oil, or solid epoxy insulation. Over time, partial discharge will degrade solid insulation and lead to its eventual breakdown. Causes and Types Partial discharge is usually caused by a manufacturers defect in the solid insulation, and can appear from normal wear and tear. Its most often found in older insulation material, but PD can be found even under optimal conditions. Various types of PD include: Corona Discharge -- Occurs where the uniformity of the magnetic field becomes distorted, and can be found in many places, including MV switchgear, transformers, and on bolted connections and terminations. Floating Discharge -- Occurs where a load-carrying conductor is exposed to another conductive surface that is not connected to it. Floating discharge occurs on metal-to-insulation and metal-to-metal connections, and is very common. Surface Discharge – This occurs on the surface of insulation and can be very destructive. It can occur in most any HV and MV equipment when the strength of the insulation breaks down, in high humidity environments, or in poorly maintained equipment. Particle Discharge –- A particle discharge occurs most often in GIS systems, but can also occur inside oil-insulated transformers. This is caused when conductive particles are left inside during maintenance, which allows PD to jump from particle to particle. How RMS Energy Can Help RMS Energy can help identify and rectify partial discharge before it leads to failure. With effective handheld and other portable detection equipment, we can help find the breakdown and evaluate the operating status of your electrical system. Various types of sensors are used to detect, analyze and locate the PD quickly and accurately. Once the PD has been detected and the results get analyzed, RMS Energy will provide a detailed test report and thorough repair and maintenance recommendations. With an approved plan, our team will repair insulation and other damage, and then monitor your system to ensure it runs smoothly. Dont let partial discharge problems lead to a major failure. Contact RMS Energy to find out how our Partial Discharge (PD) Detection and Monitoring service can help your facility operate at peak efficiency and avoid costly downtime. dlvr.it/7Xl0dv
Posted on: Sun, 16 Nov 2014 23:51:04 +0000
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