Comparison analysis of the voltage variation ranges for distribution networks

This paper describes the comparison results of the service voltage and its variation range in the distribution network of different countries. Also, the maximum voltage drop in consumer's installations in other countries is compared to each other. To do this, the national standards and regulations related to the voltage variation ranges and the voltage drop are studied in this paper. Especially, this paper focuses on the service voltages of a single phase source in a distribution network. Even though the ongoing international standard voltage harmonization, many countries maintain the previous national standard voltage and its variation range and the difference of the maximum voltage drop in regulations makes the voltage variation range at load points in countries to be more different.