Assessment and improvement of energy efficiency works of transformers work during anenergy survey

The article presents a comprehensive approach to assessing the energy efficiency of transformer substations, as well as practical ways to reduce the electrical energy on the example of enterprises producing gas equipment. The approach reflected in the article is based on the determination of the probabilistic design load as a result of processing statistical data accumulated by the information-measuring system during the characteristic year. To test the hypothesis of the normal distribution of the electrical load and assess the degree of consistency of the theoretical and statistical distributions, the Kolmogorov-Smirnov criterion was used at a significance level of 0.05%. The article establishes that reducing the power of transformers to ensure a standard load factor does not always lead to the most efficient mode due to the worst ratio of losses in steel and copper of the transformer. When analyzing the inclusion of one or two transformers to prevent systematic overload due to the large dispersion of loads during the day, it is necessary to take into account the magnitude of the calculated load. The research results can be used by industrial enterprises in determining the optimal load of transformers and the number of switched on transformers in a high reserve to minimize the loss of active power and energy.