Calculation of electrical loads of residential and public buildings based on actual data

Abstract

Abstract Design organizations use normative specific load to calculate the power consumed by residential and public building. The practice of construction and operation of urban power supply systems has shown that in most cases real loads are less than calculated ones by 1.5–2 times. A revision of the standard load values is needed based on experimental measurements of power profiles. The newly built cable networks and transformer substations of 10/0.4 kV in fact turn out to be underloaded. Moreover, this underloading is such that transformers rarely operate at 50% of their capacity during hours of maximum power consumption. The death of investments for power grid companies is obvious, since after the nearest site development, it becomes almost impossible to connect a new consumer.