Development, testing and performance of HV power capacitors

Economic and environmental pressures have stimulated rapid changes in power-capacitor technology. Due to the development of stronger and easier-to-impregnate polypropylene films, together with the successful introduction of a dozen or more new nonPCB impregnating fluids, a new generation of low-loss high-capacitance all-film capacitors are gradually replacing the traditional all-paper and mixed paper-film types. The author discusses the development and improvements of power capacitors and then goes on to discuss the all-film capacitors. In-service performance of power capacitors, testing, and transient overvoltage testing are also discussed.< >