With the rapid development of modern society, people have a higher pursuit of living environment. From the big aspect, the basic living facilities in the residential area are more and more abundant, and the residential buildings are more and more diversified. The designed community includes high-rise residential buildings, multi-storey residential buildings, office buildings, shops, pump rooms, heat exchange stations, underground parking garage and other facilities. Different buildings have different power loads, and the electrical design requirements of the whole community are also improved. From a small point of view, people's lives have become rich, and household appliances such as air conditioning, color TV and washing machine are gradually increasing. Compared with the past, the power load has increased significantly. Residential power consumption is becoming more and more diversified, so it is necessary to select appropriate calculation methods according to different loads.<br>
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