Updating the Standard Specific Electric Loads of Apartment Buildings in the Republic of Tatarstan

Abstract

The Code of Practices SP256.1325800.2016 and regional standards for urban planning design are the main regulatory and technical documents regulating the design analysis of residential building electrical loads. The relevant standard values of specific electric power, which serve as the basis for designing urban power supply systems, have not been revised for more than 40 years. A study of 10/0.4 kV urban transformer substations in different regions of the Russian Federation has shown that 70 to 80% of transformers are loaded by less than 30% of their rated capacity during the year, and half of them operate with a maximum load of less than 15%. The actual daily profiles of apartment building electrical loads for the period 2016-2018 were studied, and data on power consumption were statistically processed. The results obtained allowed us to justify the possibility of reducing the design electrical load in designing apartment buildings and to develop new regional standards for specific design loads. The updated standard values of specific electrical loads are applicable to an apartment building as a whole and take into account both the electrical load of individual apartments and the general household electricity consumption. The economic efficiency of applying the new standard values in performing design calculation of electrical loads and selecting the electrical equipment is shown taking the Salavat Kupere residential complex as an example.