Effect of Injected Charge on the Electrification of Oil Flowing Past the Surface of Composite Polymers

摘要

the factors affecting oil-flow electrification (OFE) in large forced oil-cooled electric power apparatus are exper- imentally investigated using a closed cycle model, and a coaxial test section comprising a charge injector. The streaming and leakage currents are measured to investigated the impact of injected charge on OFE interface with composite polymers. The results reveal that the magnitude and polarity of the injected charge, and the type of com- posite polymer and its impregnation resin, if it exits, cause evident qualitative as well as quantitative changes in the measured currents.