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As the digital revolution takes hold it becomes increasingly practical to measure partial discharge parameters using purely digital techniques. Many of the possible approaches to the estimation problem are still not economically feasible for commercial testing applications. However, in the near future, the price of digital signal processors will be low enough to use in standard measurement systems...
Real time waveforms and their statistical properties help to identify and characterize differences in the partial discharge processes that cause them. A special test cell has been constructed which permits simultaneous observation of both the electromagnetic and the ultrasonic signals generated by partial discharges in dielectrics. A basic cross section of the test cell is shown in Fig. 1. Different...
The rate of growth of electrical power generation and distribution in the United States is so large that the electrical systems in use, should be almost continuously reevaluated in search of better alternatives. One pressing need is for an alternative to large overhead systems. One obvious alternative is underground cable, but practically all facets of present underground systems could stand improvement...
Over the past 40 or more years, the electric utility industry has met and solved a variety of problems and challenges. Let me pose some possible future problems, mainly to try to explain to the skeptical why a utility man might be interested in microwave power transmission. Admittedly, the probability that these particular problems will actually arise is not very great, but that is beside the point;...
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