1997 Volume 117 Issue 10 Pages 1336-1344
Transformers with on-load tap changer and step voltage regulators are now mainly used for regulating the distribution network voltage. Therefore, several problems exist in the present system, i.e. the voltage control is in discrete steps and the response time is not enough satisfactory. In the meantime, power factor (p. f.) compensation relies on capacitors installed by electricity customers, which give another problems of unexpected over voltage during light load and increase of power losses. To solve those problems, the authors have proposed a new voltage and p. f. control system for distribution networks which adopts sophisticated power electronics technology. This paper describes the study for the operating theory of a inverter controlled regulator and a thyristor controlled reactor, which bear important roles in this system, and the result of simulation through which the usefulness of these equipment has been ascertained.
The transactions of the Institute of Electrical Engineers of Japan.B
The Journal of the Institute of Electrical Engineers of Japan