3. Protecting the future of networks and users

Statocompensator flicker control, which has just been discussed at length, is complex and, despite rigorous and exhaustive consideration of physical realities, the results remain modest. The characteristic shown in figure 32 shows that, for frequencies above 20 Hz, amplification rather than attenuation occurs. In industrial practice, flicker reduction in the ratio of 2.5 is very ambitious, whereas the normative requirement is often a reduction greater than three. The presence of fixed capacitors arranged as filters, with tunings on ranks three, five and two most often, is partly to blame for this modest performance. While the last tuning row of the filter introduces damping and limits the anti-resonance...