Сalculation of the correction factor to the normative values of specific electric loads of multiple residential buildings Moscow and Moscow region

Abstract

THE PURPOSE. Reducing the cost of external electrical networks in the housing construction of multi-apartment residential buildings (MKD) in Moscow and the Moscow Region by substantiating the value of the correction factor to the standard values of specific electrical loads and developing appropriate amendments to SP 256.1325800.2016 “Electrical installations of residential and public buildings. Rules for design and installation. METHODS. The half-hour graphs of electrical loads installed directly at the objects under study were experimentally obtained from intelligent electricity metering devices. To process the measurement results, statistical methods for processing a large amount of data were applied. RESULTS. The article substantiates the relevance of the topic, analyzes the electrical loads of residential buildings in Moscow and the Moscow region, which confirmed the need to develop a correction factor, the value of which characterizes the difference between real and calculated values. Accepted for statistical processing are the results of measurements of electricity consumption in apartments per day with the maximum total electricity consumption of MKD. Based on the calculations performed, amendments were prepared to section 7 of SP 256.1325800.2016 “Electrical installations of residential and public buildings. Design and installation rules”, including clause 7.1.10. is set out in a new edition, and table 7.5a is formed. CONCLUSION. Based on the analysis of the calculated specific electrical loads of apartment buildings in Moscow and the Moscow region, the value of the correction factor for the city of Moscow and the Moscow region in relation to the MKD of standard projects, which amounted to 0.81, was justified, taking into account the margin. The use of a correction factor to determine the design load of a residential building will reduce costs in the construction of external electrical networks of residential buildings with a simultaneous increase in the efficiency of power transformers in Moscow and the Moscow Region.