ASSESSMENT OF UNEVENNESS OF ELECTRICITY WITHDRAWAL IN ELECTRICITY DISTRIBUTION AND USE SYSTEMS WITH ACCUMULATORY BATTERIES

The peculiarities of calculating the energy capacity of storage batteries in systems of distribution and use of electricity with time-varying loads at different intensities of their discharge are considered. It is shown that the assessment of the unevenness of electricity selection in systems with storage batteries can be made due to the use of such an integral indicator as the modified Friese power, which is considered an indicator of the operation of a specific element in the system (assessment of the overall system energy efficiency). The dependencies of the unevenness of the battery discharge are obtained in the form of a dimensionless function, which allows you to get a visual representation of the assessment of the level of unevenness of electricity consumption by loads in three-dimensional space depending on the duration of the intervals in which the power draw is constant, and the intensity of the battery discharge during these intervals. An integral characteristic of the assessment of unevenness of the battery discharge, which is an indicator of the energy efficiency of the battery as an element of the system, is introduced. References 19, Figures 4, Table 1.