ABSTRACT
This chapter describes a simulation system that enables computations on high impulse voltage measuring systems to be carried out effectively. For the generation of low voltage impulses, a surge generator was used which could produce full or chopped impulses of up to 500 V. As the surge level of the tested high voltage increases, dimensions of the testing simulation system also increase, compounding the state of distortion. Lightning surges are, as indicated repeatedly, not periodic and the closest representation is the double exponential wave form. The main concern regarding reliable operation of the Lightning Flash Counter (LFC) is that its continuity be assured after a long lapse. The chapter discusses a low power LFC using active circuit elements working within a narrow band filter centered at 10 kHz resulting in better discrimination between cloud and ground discharges. The distinguishing characteristic element of various types of lightning flashes is the duration of time rise of the pulse front.
