High Voltage Testing Articles

  • No Place Is Too Far

    The remote location of hydropower stations is often a great challenge when major repair work is necessary. The refurbishment of a large generator in the Scottish Highlands shows how Sulzer finds cost-effective service solutions even in places miles from nowhere. Much of the UK hydroelectric capacity was built during the 1950s. These installations have performed extremely well, especially ...


    By Sulzer Ltd.

  • Correlation of dielectric model parameters with experimental results based on PDC, RV and loss factor measurements for high voltage capacitors

    To improve the reliability and quality of electric power systems, preventive diagnosis and regular maintenance of high voltage capacitors are required. Dielectric response measurements in both time domain and frequency domain are potential tools for assessing the condition of dielectric of high voltage capacitors. Modern measurements in time domain include polarisation and depolarisation current ...


    By Inderscience Publishers

  • Fuel Cell Voltage Monitoring Considerations

    Knowing what’s happening inside a fuel cell is a critical function, especially as fuel cells are continuing to be developed. One important aspect of this is to measure the voltageof each cell in a stack. Although this may sound trivial, it can be more complex and more expensive than it may at first appear due to high voltages, high channel counts,communication types, etc. There ...


    By Fuel Cells Etc

  • The evolution of the topology of high-voltage electricity networks

    The electricity network represents an example of an evolving complex system. The first local networks contained only a few nodes, but within several decades, they have evolved into a highly connected continental system. The growth of these networks was influenced by various factors such as economic, demographic, political and technological developments. In this paper, we analyse the growth of the ...


    By Inderscience Publishers

  • Instantaneous voltage measurement technique for PWM voltage source inverters

    The pulse width modulated (PWM) voltage source inverter (VSI) is almost universally used in industrial motor drives. Although measurement of the VSI output voltage is required in many applications, accurate measurement is problematic due to the high frequency inverter switching. Many commonly used inverter output voltage measurement methods, such as indirect and direct voltage measurement, ...


    By Inderscience Publishers

  • Modelling oil degradation in electric transformer oil under typical loads

    In testing transformer oils for durability, it is desirable to use typical transformer operating conditions with appropriate allowances for factor of safety against temperature and voltage. The kinetics of degradation of used type II transformer oil with original flash point of 148?C, pour point of 51?C, and water content of 4 ppm was investigated. Assuming that the oil temperature in models Pr01 ...


    By Inderscience Publishers

  • Advanced system for calibration and characterization of solar cells

    This paper presents high performance setup developed at the SolarLab to measure curient-voltage (I—V) curves of solar cells. The core of a setup is a steady light solar simulator of class A, according to specifications oflEC 60904-9 andASTM E927 standards. Available range of measurements enables us to characterise not only all kinds of silicon wafer-based solar cells but also thin film ...

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