Compatibility Of C4F7N/CO2 And Epoxy & Optical PD Characteristics Of The Gas

SF6 has been the primary dielectric medium in electrical power applications for many years, notably in high voltage gas-insulated equipment. Governments have pursued emission reductions from Gas insulated equipment, recognizing that SF6 has an extremely long atmospheric lifetime and significant global warming potential. The electrical power...

Unsupervised Learning to Locate Weak Spots in the Medium Voltage Grid

The Medium Voltage (MV) network in the Netherlands is almost entirely composed of underground cables. The failure statistics show that the interruptions in the medium voltage have a high contribution in the mean outage time per year per customer. The interruptions in the medium voltage grid are often caused by failure of circuit components...

Feasibility Study for Usage of Optical Partial Discharge Detection in HV Cable Termination

Cable terminations are essential for connecting a cable to a piece of equipment such as a circuit breaker, transformer, motor, etc. Proper terminations are of great importance in order to provide faultless cable systems. Improper terminations could result in overheating, partial discharges, eventual breakdown, flashover and breakdown in the...

Embedded Real Time Partial Discharge Pulse Feature Extraction

Partial Discharges(PD) are commonly produced in defects within the insulation systems of high voltage equipment. These discharges are typically nanosecond current pulses in the amplitude range of milli-amperes. A long term exposure of the insulation system to these partial discharges accelerate the aging mechanisms that eventually lead to the...

Feasibility Study on Sensitive Partial Discharge Measurements on Long Cable Systems

The phenomenon of partial discharge has been long studied in various power components and in recent times, it has been agreed that the occurrence of such discharges can be considered as a vital parameter of component health. Partial discharges in power cables is a pervasive phenomenon that over time may lead to...

Electrical Treeing in Insulation Materials for High Voltage AC Subsea Connectors under High Hydrostatic Pressures: Electrical tree, partial discharge behaviour and light emission in SiR

To enable the next generation subsea boosting and processing facilities, high power electrical connectors are strongly needed and considered one of the most critical components of the system. <br/>Electrical tree growth is a precursor to electrical breakdown in high voltage insulation materials. Therefore, the study of the tree growth dependency...

Partial Discharge Analysis and Recognition in Cables with Medium Voltage DC

With the current state of power electronic conversion operating at Direct Current (DC) can in some cases be more efficient than ordinary Alternating Current (AC). DC voltage energy transmission and distribution is, thus, playing an increasingly important role. The continuity of the electrical energy supply is essential for a well-functioning...

Investigation of Partial Discharge Occurrence and Detectability for High Voltage Power Cable Accessories

In this study, three artificial defects that represent different type of installation defects are observed by electric field simulation and different energizing and PD detection method. Several measurement issues related to the un-conventional PD measurement are also investigated. The investigation of all these important factors is performed to...