ABSTRACT

High voltage components and apparati are tested for a variety of reasons (see chapter 12). During such tests, measurements of voltages, currents, partial discharge levels, etc. are made to ensure that required test voltage and/or current waveforms and amplitudes have been applied and the tested equipment complies with the test requirements and specifications. Chapter 10 briefly reviewed the methods of generation of high test voltages and their measurements. Due to great advances made during the last two decades in the fields of computers, electronics and optics, interest in the applications of such advanced technologies for the purpose of high voltage measurements, testing and diagnostics have been growing. Consequently, electro-optical and digital techniques are finding increasing use in the area of high voltage, high current measurements and diagnostics. This chapter provides a brief introduction to such new measurement and diagnostic technologies.